* [PATCH 3.2 013/131] USB: OHCI: don't lose track of EDs when a controller dies
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 118/131] sunsab: Fix detection of BREAK on sunsab serial console Ben Hutchings
` (131 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Alan Stern, Greg Kroah-Hartman
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Alan Stern <stern@rowland.harvard.edu>
commit 977dcfdc60311e7aa571cabf6f39c36dde13339e upstream.
This patch fixes a bug in ohci-hcd. When an URB is unlinked, the
corresponding Endpoint Descriptor is added to the ed_rm_list and taken
off the hardware schedule. Once the ED is no longer visible to the
hardware, finish_unlinks() handles the URBs that were unlinked or have
completed. If any URBs remain attached to the ED, the ED is added
back to the hardware schedule -- but only if the controller is
running.
This fails when a controller dies. A non-empty ED does not get added
back to the hardware schedule and does not remain on the ed_rm_list;
ohci-hcd loses track of it. The remaining URBs cannot be unlinked,
which causes the USB stack to hang.
The patch changes finish_unlinks() so that non-empty EDs remain on
the ed_rm_list if the controller isn't running. This requires moving
some of the existing code around, to avoid modifying the ED's hardware
fields more than once.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2: keep using HC_IS_RUNNING()]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/host/ohci-q.c | 46 +++++++++++++++++++++++++++++-----------------
1 file changed, 29 insertions(+), 17 deletions(-)
--- a/drivers/usb/host/ohci-q.c
+++ b/drivers/usb/host/ohci-q.c
@@ -294,8 +294,7 @@ static void periodic_unlink (struct ohci
* - ED_OPER: when there's any request queued, the ED gets rescheduled
* immediately. HC should be working on them.
*
- * - ED_IDLE: when there's no TD queue. there's no reason for the HC
- * to care about this ED; safe to disable the endpoint.
+ * - ED_IDLE: when there's no TD queue or the HC isn't running.
*
* When finish_unlinks() runs later, after SOF interrupt, it will often
* complete one or more URB unlinks before making that state change.
@@ -909,6 +908,10 @@ rescan_all:
int completed, modified;
__hc32 *prev;
+ /* Is this ED already invisible to the hardware? */
+ if (ed->state == ED_IDLE)
+ goto ed_idle;
+
/* only take off EDs that the HC isn't using, accounting for
* frame counter wraps and EDs with partially retired TDs
*/
@@ -938,12 +941,20 @@ skip_ed:
}
}
+ /* ED's now officially unlinked, hc doesn't see */
+ ed->state = ED_IDLE;
+ if (quirk_zfmicro(ohci) && ed->type == PIPE_INTERRUPT)
+ ohci->eds_scheduled--;
+ ed->hwHeadP &= ~cpu_to_hc32(ohci, ED_H);
+ ed->hwNextED = 0;
+ wmb();
+ ed->hwINFO &= ~cpu_to_hc32(ohci, ED_SKIP | ED_DEQUEUE);
+ed_idle:
+
/* reentrancy: if we drop the schedule lock, someone might
* have modified this list. normally it's just prepending
* entries (which we'd ignore), but paranoia won't hurt.
*/
- *last = ed->ed_next;
- ed->ed_next = NULL;
modified = 0;
/* unlink urbs as requested, but rescan the list after
@@ -1001,19 +1012,20 @@ rescan_this:
if (completed && !list_empty (&ed->td_list))
goto rescan_this;
- /* ED's now officially unlinked, hc doesn't see */
- ed->state = ED_IDLE;
- if (quirk_zfmicro(ohci) && ed->type == PIPE_INTERRUPT)
- ohci->eds_scheduled--;
- ed->hwHeadP &= ~cpu_to_hc32(ohci, ED_H);
- ed->hwNextED = 0;
- wmb ();
- ed->hwINFO &= ~cpu_to_hc32 (ohci, ED_SKIP | ED_DEQUEUE);
-
- /* but if there's work queued, reschedule */
- if (!list_empty (&ed->td_list)) {
- if (HC_IS_RUNNING(ohci_to_hcd(ohci)->state))
- ed_schedule (ohci, ed);
+ /*
+ * If no TDs are queued, take ED off the ed_rm_list.
+ * Otherwise, if the HC is running, reschedule.
+ * If not, leave it on the list for further dequeues.
+ */
+ if (list_empty(&ed->td_list)) {
+ *last = ed->ed_next;
+ ed->ed_next = NULL;
+ } else if (HC_IS_RUNNING(ohci_to_hcd(ohci)->state)) {
+ *last = ed->ed_next;
+ ed->ed_next = NULL;
+ ed_schedule(ohci, ed);
+ } else {
+ last = &ed->ed_next;
}
if (modified)
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 118/131] sunsab: Fix detection of BREAK on sunsab serial console
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 013/131] USB: OHCI: don't lose track of EDs when a controller dies Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 072/131] USB: serial: pl2303: add device id for ztek device Ben Hutchings
` (130 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, David S. Miller, Christopher Alexander Tobias Schulze
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Christopher Alexander Tobias Schulze <cat.schulze@alice-dsl.net>
[ Upstream commit fe418231b195c205701c0cc550a03f6c9758fd9e ]
Fix detection of BREAK on sunsab serial console: BREAK detection was only
performed when there were also serial characters received simultaneously.
To handle all BREAKs correctly, the check for BREAK and the corresponding
call to uart_handle_break() must also be done if count == 0, therefore
duplicate this code fragment and pull it out of the loop over the received
characters.
Patch applies to 3.16-rc6.
Signed-off-by: Christopher Alexander Tobias Schulze <cat.schulze@alice-dsl.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/tty/serial/sunsab.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/tty/serial/sunsab.c b/drivers/tty/serial/sunsab.c
index b5fa2a5..5d80bb9 100644
--- a/drivers/tty/serial/sunsab.c
+++ b/drivers/tty/serial/sunsab.c
@@ -156,6 +156,15 @@ receive_chars(struct uart_sunsab_port *up,
(up->port.line == up->port.cons->index))
saw_console_brk = 1;
+ if (count == 0) {
+ if (unlikely(stat->sreg.isr1 & SAB82532_ISR1_BRK)) {
+ stat->sreg.isr0 &= ~(SAB82532_ISR0_PERR |
+ SAB82532_ISR0_FERR);
+ up->port.icount.brk++;
+ uart_handle_break(&up->port);
+ }
+ }
+
for (i = 0; i < count; i++) {
unsigned char ch = buf[i], flag;
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 072/131] USB: serial: pl2303: add device id for ztek device
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 013/131] USB: OHCI: don't lose track of EDs when a controller dies Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 118/131] sunsab: Fix detection of BREAK on sunsab serial console Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 078/131] usb: xhci: amd chipset also needs short TX quirk Ben Hutchings
` (129 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Mike Chu, Greg KH, Johan Hovold
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Greg KH <gregkh@linuxfoundation.org>
commit 91fcb1ce420e0a5f8d92d556d7008a78bc6ce1eb upstream.
This adds a new device id to the pl2303 driver for the ZTEK device.
Reported-by: Mike Chu <Mike-Chu@prolific.com.tw>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/serial/pl2303.c | 1 +
drivers/usb/serial/pl2303.h | 1 +
2 files changed, 2 insertions(+)
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -51,6 +51,7 @@ static const struct usb_device_id id_tab
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) },
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) },
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) },
+ { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ZTEK) },
{ USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) },
{ USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) },
{ USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) },
--- a/drivers/usb/serial/pl2303.h
+++ b/drivers/usb/serial/pl2303.h
@@ -22,6 +22,7 @@
#define PL2303_PRODUCT_ID_GPRS 0x0609
#define PL2303_PRODUCT_ID_HCR331 0x331a
#define PL2303_PRODUCT_ID_MOTOROLA 0x0307
+#define PL2303_PRODUCT_ID_ZTEK 0xe1f1
#define ATEN_VENDOR_ID 0x0557
#define ATEN_VENDOR_ID2 0x0547
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 078/131] usb: xhci: amd chipset also needs short TX quirk
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (2 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 072/131] USB: serial: pl2303: add device id for ztek device Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 090/131] HID: picolcd: sanity check report size in raw_event() callback Ben Hutchings
` (128 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Greg Kroah-Hartman, Shriraj-Rai P, Mathias Nyman,
Arindam Nath, Huang Rui
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Huang Rui <ray.huang@amd.com>
commit 2597fe99bb0259387111d0431691f5daac84f5a5 upstream.
AMD xHC also needs short tx quirk after tested on most of chipset
generations. That's because there is the same incorrect behavior like
Fresco Logic host. Please see below message with on USB webcam
attached on xHC host:
[ 139.262944] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk?
[ 139.266934] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk?
[ 139.270913] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk?
[ 139.274937] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk?
[ 139.278914] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk?
[ 139.282936] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk?
[ 139.286915] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk?
[ 139.290938] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk?
[ 139.294913] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk?
[ 139.298917] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk?
Reported-by: Arindam Nath <arindam.nath@amd.com>
Tested-by: Shriraj-Rai P <shriraj-rai.p@amd.com>
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/host/xhci-pci.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -98,6 +98,10 @@ static void xhci_pci_quirks(struct devic
/* AMD PLL quirk */
if (pdev->vendor == PCI_VENDOR_ID_AMD && usb_amd_find_chipset_info())
xhci->quirks |= XHCI_AMD_PLL_FIX;
+
+ if (pdev->vendor == PCI_VENDOR_ID_AMD)
+ xhci->quirks |= XHCI_TRUST_TX_LENGTH;
+
if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
pdev->device == PCI_DEVICE_ID_INTEL_PANTHERPOINT_XHCI) {
xhci->quirks |= XHCI_EP_LIMIT_QUIRK;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 090/131] HID: picolcd: sanity check report size in raw_event() callback
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (3 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 078/131] usb: xhci: amd chipset also needs short TX quirk Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 111/131] sparc64: Fix top-level fault handling bugs Ben Hutchings
` (127 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Jiri Kosina, Steven Vittitoe
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Jiri Kosina <jkosina@suse.cz>
commit 844817e47eef14141cf59b8d5ac08dd11c0a9189 upstream.
The report passed to us from transport driver could potentially be
arbitrarily large, therefore we better sanity-check it so that raw_data
that we hold in picolcd_pending structure are always kept within proper
bounds.
Reported-by: Steven Vittitoe <scvitti@google.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
[bwh: Backported to 3.2: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/hid/hid-picolcd.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/hid/hid-picolcd.c
+++ b/drivers/hid/hid-picolcd.c
@@ -2382,6 +2382,12 @@ static int picolcd_raw_event(struct hid_
if (!data)
return 1;
+ if (size > 64) {
+ hid_warn(hdev, "invalid size value (%d) for picolcd raw event\n",
+ size);
+ return 0;
+ }
+
if (report->id == REPORT_KEY_STATE) {
if (data->input_keys)
ret = picolcd_raw_keypad(data, report, raw_data+1, size-1);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 111/131] sparc64: Fix top-level fault handling bugs.
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (4 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 090/131] HID: picolcd: sanity check report size in raw_event() callback Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 106/131] iovec: make sure the caller actually wants anything in memcpy_fromiovecend Ben Hutchings
` (126 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, David S. Miller
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "David S. Miller" <davem@davemloft.net>
[ Upstream commit 70ffc6ebaead783ac8dafb1e87df0039bb043596 ]
Make get_user_insn() able to cope with huge PMDs.
Next, make do_fault_siginfo() more robust when get_user_insn() can't
actually fetch the instruction. In particular, use the MMU announced
fault address when that happens, instead of calling
compute_effective_address() and computing garbage.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/sparc/mm/fault_64.c | 86 ++++++++++++++++++++++++++++++------------------
1 file changed, 54 insertions(+), 32 deletions(-)
diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c
index 504c062..6ac702f 100644
--- a/arch/sparc/mm/fault_64.c
+++ b/arch/sparc/mm/fault_64.c
@@ -95,38 +95,51 @@ static unsigned int get_user_insn(unsigned long tpc)
pte_t *ptep, pte;
unsigned long pa;
u32 insn = 0;
- unsigned long pstate;
- if (pgd_none(*pgdp))
- goto outret;
+ if (pgd_none(*pgdp) || unlikely(pgd_bad(*pgdp)))
+ goto out;
pudp = pud_offset(pgdp, tpc);
- if (pud_none(*pudp))
- goto outret;
- pmdp = pmd_offset(pudp, tpc);
- if (pmd_none(*pmdp))
- goto outret;
-
- /* This disables preemption for us as well. */
- __asm__ __volatile__("rdpr %%pstate, %0" : "=r" (pstate));
- __asm__ __volatile__("wrpr %0, %1, %%pstate"
- : : "r" (pstate), "i" (PSTATE_IE));
- ptep = pte_offset_map(pmdp, tpc);
- pte = *ptep;
- if (!pte_present(pte))
+ if (pud_none(*pudp) || unlikely(pud_bad(*pudp)))
goto out;
- pa = (pte_pfn(pte) << PAGE_SHIFT);
- pa += (tpc & ~PAGE_MASK);
-
- /* Use phys bypass so we don't pollute dtlb/dcache. */
- __asm__ __volatile__("lduwa [%1] %2, %0"
- : "=r" (insn)
- : "r" (pa), "i" (ASI_PHYS_USE_EC));
+ /* This disables preemption for us as well. */
+ local_irq_disable();
+ pmdp = pmd_offset(pudp, tpc);
+ if (pmd_none(*pmdp) || unlikely(pmd_bad(*pmdp)))
+ goto out_irq_enable;
+
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+ if (pmd_trans_huge(*pmdp)) {
+ if (pmd_trans_splitting(*pmdp))
+ goto out_irq_enable;
+
+ pa = pmd_pfn(*pmdp) << PAGE_SHIFT;
+ pa += tpc & ~HPAGE_MASK;
+
+ /* Use phys bypass so we don't pollute dtlb/dcache. */
+ __asm__ __volatile__("lduwa [%1] %2, %0"
+ : "=r" (insn)
+ : "r" (pa), "i" (ASI_PHYS_USE_EC));
+ } else
+#endif
+ {
+ ptep = pte_offset_map(pmdp, tpc);
+ pte = *ptep;
+ if (pte_present(pte)) {
+ pa = (pte_pfn(pte) << PAGE_SHIFT);
+ pa += (tpc & ~PAGE_MASK);
+
+ /* Use phys bypass so we don't pollute dtlb/dcache. */
+ __asm__ __volatile__("lduwa [%1] %2, %0"
+ : "=r" (insn)
+ : "r" (pa), "i" (ASI_PHYS_USE_EC));
+ }
+ pte_unmap(ptep);
+ }
+out_irq_enable:
+ local_irq_enable();
out:
- pte_unmap(ptep);
- __asm__ __volatile__("wrpr %0, 0x0, %%pstate" : : "r" (pstate));
-outret:
return insn;
}
@@ -154,7 +167,8 @@ show_signal_msg(struct pt_regs *regs, int sig, int code,
extern unsigned long compute_effective_address(struct pt_regs *, unsigned int, unsigned int);
static void do_fault_siginfo(int code, int sig, struct pt_regs *regs,
- unsigned int insn, int fault_code)
+ unsigned long fault_addr, unsigned int insn,
+ int fault_code)
{
unsigned long addr;
siginfo_t info;
@@ -162,10 +176,18 @@ static void do_fault_siginfo(int code, int sig, struct pt_regs *regs,
info.si_code = code;
info.si_signo = sig;
info.si_errno = 0;
- if (fault_code & FAULT_CODE_ITLB)
+ if (fault_code & FAULT_CODE_ITLB) {
addr = regs->tpc;
- else
- addr = compute_effective_address(regs, insn, 0);
+ } else {
+ /* If we were able to probe the faulting instruction, use it
+ * to compute a precise fault address. Otherwise use the fault
+ * time provided address which may only have page granularity.
+ */
+ if (insn)
+ addr = compute_effective_address(regs, insn, 0);
+ else
+ addr = fault_addr;
+ }
info.si_addr = (void __user *) addr;
info.si_trapno = 0;
@@ -240,7 +262,7 @@ static void __kprobes do_kernel_fault(struct pt_regs *regs, int si_code,
/* The si_code was set to make clear whether
* this was a SEGV_MAPERR or SEGV_ACCERR fault.
*/
- do_fault_siginfo(si_code, SIGSEGV, regs, insn, fault_code);
+ do_fault_siginfo(si_code, SIGSEGV, regs, address, insn, fault_code);
return;
}
@@ -492,7 +514,7 @@ do_sigbus:
* Send a sigbus, regardless of whether we were in kernel
* or user mode.
*/
- do_fault_siginfo(BUS_ADRERR, SIGBUS, regs, insn, fault_code);
+ do_fault_siginfo(BUS_ADRERR, SIGBUS, regs, address, insn, fault_code);
/* Kernel mode? Handle exceptions or die */
if (regs->tstate & TSTATE_PRIV)
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 106/131] iovec: make sure the caller actually wants anything in memcpy_fromiovecend
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (5 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 111/131] sparc64: Fix top-level fault handling bugs Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 027/131] tpm: Provide a generic means to override the chip returned timeouts Ben Hutchings
` (125 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Sasha Levin, David S. Miller
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Sasha Levin <sasha.levin@oracle.com>
[ Upstream commit 06ebb06d49486676272a3c030bfeef4bd969a8e6 ]
Check for cases when the caller requests 0 bytes instead of running off
and dereferencing potentially invalid iovecs.
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
net/core/iovec.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/core/iovec.c b/net/core/iovec.c
index fcf9ee7..66e3f1f 100644
--- a/net/core/iovec.c
+++ b/net/core/iovec.c
@@ -157,6 +157,10 @@ EXPORT_SYMBOL(memcpy_fromiovec);
int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov,
int offset, int len)
{
+ /* No data? Done! */
+ if (len == 0)
+ return 0;
+
/* Skip over the finished iovecs */
while (offset >= iov->iov_len) {
offset -= iov->iov_len;
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 027/131] tpm: Provide a generic means to override the chip returned timeouts
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (6 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 106/131] iovec: make sure the caller actually wants anything in memcpy_fromiovecend Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 004/131] stable_kernel_rules: Add pointer to netdev-FAQ for network patches Ben Hutchings
` (124 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Jason Gunthorpe, Peter Huewe, Berg, Christopher
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
commit 8e54caf407b98efa05409e1fee0e5381abd2b088 upstream.
Some Atmel TPMs provide completely wrong timeouts from their
TPM_CAP_PROP_TIS_TIMEOUT query. This patch detects that and returns
new correct values via a DID/VID table in the TIS driver.
Tested on ARM using an AT97SC3204T FW version 37.16
[PHuewe: without this fix these 'broken' Atmel TPMs won't function on
older kernels]
Signed-off-by: "Berg, Christopher" <Christopher.Berg@atmel.com>
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
[bwh: Backported to 3.2:
- Adjust filename, context
- s/chip->ops->/chip->vendor./]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/char/tpm/tpm.c | 62 ++++++++++++++++++++++++++--------------
drivers/char/tpm/tpm.h | 3 ++
drivers/char/tpm/tpm_tis.c | 31 ++++++++++++++++++++
3 files changed, 75 insertions(+), 21 deletions(-)
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -533,11 +533,10 @@ EXPORT_SYMBOL_GPL(tpm_gen_interrupt);
void tpm_get_timeouts(struct tpm_chip *chip)
{
struct tpm_cmd_t tpm_cmd;
- struct timeout_t *timeout_cap;
+ unsigned long new_timeout[4];
+ unsigned long old_timeout[4];
struct duration_t *duration_cap;
ssize_t rc;
- u32 timeout;
- unsigned int scale = 1;
tpm_cmd.header.in = tpm_getcap_header;
tpm_cmd.params.getcap_in.cap = TPM_CAP_PROP;
@@ -554,25 +553,46 @@ void tpm_get_timeouts(struct tpm_chip *c
!= sizeof(tpm_cmd.header.out) + sizeof(u32) + 4 * sizeof(u32))
return;
- timeout_cap = &tpm_cmd.params.getcap_out.cap.timeout;
- /* Don't overwrite default if value is 0 */
- timeout = be32_to_cpu(timeout_cap->a);
- if (timeout && timeout < 1000) {
- /* timeouts in msec rather usec */
- scale = 1000;
- chip->vendor.timeout_adjusted = true;
+ old_timeout[0] = be32_to_cpu(tpm_cmd.params.getcap_out.cap.timeout.a);
+ old_timeout[1] = be32_to_cpu(tpm_cmd.params.getcap_out.cap.timeout.b);
+ old_timeout[2] = be32_to_cpu(tpm_cmd.params.getcap_out.cap.timeout.c);
+ old_timeout[3] = be32_to_cpu(tpm_cmd.params.getcap_out.cap.timeout.d);
+ memcpy(new_timeout, old_timeout, sizeof(new_timeout));
+
+ /*
+ * Provide ability for vendor overrides of timeout values in case
+ * of misreporting.
+ */
+ if (chip->vendor.update_timeouts != NULL)
+ chip->vendor.timeout_adjusted =
+ chip->vendor.update_timeouts(chip, new_timeout);
+
+ if (!chip->vendor.timeout_adjusted) {
+ /* Don't overwrite default if value is 0 */
+ if (new_timeout[0] != 0 && new_timeout[0] < 1000) {
+ int i;
+
+ /* timeouts in msec rather usec */
+ for (i = 0; i != ARRAY_SIZE(new_timeout); i++)
+ new_timeout[i] *= 1000;
+ chip->vendor.timeout_adjusted = true;
+ }
}
- if (timeout)
- chip->vendor.timeout_a = usecs_to_jiffies(timeout * scale);
- timeout = be32_to_cpu(timeout_cap->b);
- if (timeout)
- chip->vendor.timeout_b = usecs_to_jiffies(timeout * scale);
- timeout = be32_to_cpu(timeout_cap->c);
- if (timeout)
- chip->vendor.timeout_c = usecs_to_jiffies(timeout * scale);
- timeout = be32_to_cpu(timeout_cap->d);
- if (timeout)
- chip->vendor.timeout_d = usecs_to_jiffies(timeout * scale);
+
+ /* Report adjusted timeouts */
+ if (chip->vendor.timeout_adjusted) {
+ dev_info(chip->dev,
+ HW_ERR "Adjusting reported timeouts: A %lu->%luus B %lu->%luus C %lu->%luus D %lu->%luus\n",
+ old_timeout[0], new_timeout[0],
+ old_timeout[1], new_timeout[1],
+ old_timeout[2], new_timeout[2],
+ old_timeout[3], new_timeout[3]);
+ }
+
+ chip->vendor.timeout_a = usecs_to_jiffies(new_timeout[0]);
+ chip->vendor.timeout_b = usecs_to_jiffies(new_timeout[1]);
+ chip->vendor.timeout_c = usecs_to_jiffies(new_timeout[2]);
+ chip->vendor.timeout_d = usecs_to_jiffies(new_timeout[3]);
duration:
tpm_cmd.header.in = tpm_getcap_header;
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -396,6 +396,36 @@ out_err:
return rc;
}
+struct tis_vendor_timeout_override {
+ u32 did_vid;
+ unsigned long timeout_us[4];
+};
+
+static const struct tis_vendor_timeout_override vendor_timeout_overrides[] = {
+ /* Atmel 3204 */
+ { 0x32041114, { (TIS_SHORT_TIMEOUT*1000), (TIS_LONG_TIMEOUT*1000),
+ (TIS_SHORT_TIMEOUT*1000), (TIS_SHORT_TIMEOUT*1000) } },
+};
+
+static bool tpm_tis_update_timeouts(struct tpm_chip *chip,
+ unsigned long *timeout_cap)
+{
+ int i;
+ u32 did_vid;
+
+ did_vid = ioread32(chip->vendor.iobase + TPM_DID_VID(0));
+
+ for (i = 0; i != ARRAY_SIZE(vendor_timeout_overrides); i++) {
+ if (vendor_timeout_overrides[i].did_vid != did_vid)
+ continue;
+ memcpy(timeout_cap, vendor_timeout_overrides[i].timeout_us,
+ sizeof(vendor_timeout_overrides[i].timeout_us));
+ return true;
+ }
+
+ return false;
+}
+
/*
* Early probing for iTPM with STS_DATA_EXPECT flaw.
* Try sending command without itpm flag set and if that
@@ -483,6 +513,7 @@ static struct tpm_vendor_specific tpm_ti
.recv = tpm_tis_recv,
.send = tpm_tis_send,
.cancel = tpm_tis_ready,
+ .update_timeouts = tpm_tis_update_timeouts,
.req_complete_mask = TPM_STS_DATA_AVAIL | TPM_STS_VALID,
.req_complete_val = TPM_STS_DATA_AVAIL | TPM_STS_VALID,
.req_canceled = TPM_STS_COMMAND_READY,
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -80,6 +80,9 @@ struct tpm_vendor_specific {
int (*send) (struct tpm_chip *, u8 *, size_t);
void (*cancel) (struct tpm_chip *);
u8 (*status) (struct tpm_chip *);
+ bool (*update_timeouts)(struct tpm_chip *chip,
+ unsigned long *timeout_cap);
+
void (*release) (struct device *);
struct miscdevice miscdev;
struct attribute_group *attr_group;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 004/131] stable_kernel_rules: Add pointer to netdev-FAQ for network patches
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (7 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 027/131] tpm: Provide a generic means to override the chip returned timeouts Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 070/131] USB: option: add VIA Telecom CDS7 chipset device id Ben Hutchings
` (123 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Greg Kroah-Hartman, Dave Chiluk
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Dave Chiluk <chiluk@canonical.com>
commit b76fc285337b6b256e9ba20a40cfd043f70c27af upstream.
Stable_kernel_rules should point submitters of network stable patches to the
netdev_FAQ.txt as requests for stable network patches should go to netdev
first.
Signed-off-by: Dave Chiluk <chiluk@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
Documentation/stable_kernel_rules.txt | 3 +++
1 file changed, 3 insertions(+)
--- a/Documentation/stable_kernel_rules.txt
+++ b/Documentation/stable_kernel_rules.txt
@@ -29,6 +29,9 @@ Rules on what kind of patches are accept
Procedure for submitting patches to the -stable tree:
+ - If the patch covers files in net/ or drivers/net please follow netdev stable
+ submission guidelines as described in
+ Documentation/networking/netdev-FAQ.txt
- Send the patch, after verifying that it follows the above rules, to
stable@vger.kernel.org. You must note the upstream commit ID in the
changelog of your submission.
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 070/131] USB: option: add VIA Telecom CDS7 chipset device id
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (8 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 004/131] stable_kernel_rules: Add pointer to netdev-FAQ for network patches Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 117/131] bbc-i2c: Fix BBC I2C envctrl on SunBlade 2000 Ben Hutchings
` (122 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Johan Hovold, Brennan Ashton
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Brennan Ashton <bashton@brennanashton.com>
commit d77302739d900bbca5e901a3b7ac48c907ee6c93 upstream.
This VIA Telecom baseband processor is used is used by by u-blox in both the
FW2770 and FW2760 products and may be used in others as well.
This patch has been tested on both of these modem versions.
Signed-off-by: Brennan Ashton <bashton@brennanashton.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/serial/option.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -496,6 +496,10 @@ static void option_instat_callback(struc
#define INOVIA_VENDOR_ID 0x20a6
#define INOVIA_SEW858 0x1105
+/* VIA Telecom */
+#define VIATELECOM_VENDOR_ID 0x15eb
+#define VIATELECOM_PRODUCT_CDS7 0x0001
+
/* some devices interfaces need special handling due to a number of reasons */
enum option_blacklist_reason {
OPTION_BLACKLIST_NONE = 0,
@@ -1740,6 +1744,7 @@ static const struct usb_device_id option
{ USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e01, 0xff, 0xff, 0xff) }, /* D-Link DWM-152/C1 */
{ USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e02, 0xff, 0xff, 0xff) }, /* D-Link DWM-156/C1 */
{ USB_DEVICE(INOVIA_VENDOR_ID, INOVIA_SEW858) },
+ { USB_DEVICE(VIATELECOM_VENDOR_ID, VIATELECOM_PRODUCT_CDS7) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, option_ids);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 117/131] bbc-i2c: Fix BBC I2C envctrl on SunBlade 2000
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (9 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 070/131] USB: option: add VIA Telecom CDS7 chipset device id Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 095/131] openrisc: add missing header inclusion Ben Hutchings
` (121 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Christopher Alexander Tobias Schulze, David S. Miller
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Christopher Alexander Tobias Schulze <cat.schulze@alice-dsl.net>
[ Upstream commit 5cdceab3d5e02eb69ea0f5d8fa9181800baf6f77 ]
Fix regression in bbc i2c temperature and fan control on some Sun systems
that causes the driver to refuse to load due to the bbc_i2c_bussel resource not
being present on the (second) i2c bus where the temperature sensors and fan
control are located. (The check for the number of resources was removed when
the driver was ported to a pure OF driver in mid 2008.)
Signed-off-by: Christopher Alexander Tobias Schulze <cat.schulze@alice-dsl.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/sbus/char/bbc_envctrl.c | 6 ++++++
drivers/sbus/char/bbc_i2c.c | 11 ++++++++---
2 files changed, 14 insertions(+), 3 deletions(-)
diff --git a/drivers/sbus/char/bbc_envctrl.c b/drivers/sbus/char/bbc_envctrl.c
index 160e751..0787b97 100644
--- a/drivers/sbus/char/bbc_envctrl.c
+++ b/drivers/sbus/char/bbc_envctrl.c
@@ -452,6 +452,9 @@ static void attach_one_temp(struct bbc_i2c_bus *bp, struct platform_device *op,
if (!tp)
return;
+ INIT_LIST_HEAD(&tp->bp_list);
+ INIT_LIST_HEAD(&tp->glob_list);
+
tp->client = bbc_i2c_attach(bp, op);
if (!tp->client) {
kfree(tp);
@@ -497,6 +500,9 @@ static void attach_one_fan(struct bbc_i2c_bus *bp, struct platform_device *op,
if (!fp)
return;
+ INIT_LIST_HEAD(&fp->bp_list);
+ INIT_LIST_HEAD(&fp->glob_list);
+
fp->client = bbc_i2c_attach(bp, op);
if (!fp->client) {
kfree(fp);
diff --git a/drivers/sbus/char/bbc_i2c.c b/drivers/sbus/char/bbc_i2c.c
index 5426682..7179f72 100644
--- a/drivers/sbus/char/bbc_i2c.c
+++ b/drivers/sbus/char/bbc_i2c.c
@@ -301,13 +301,18 @@ static struct bbc_i2c_bus * __init attach_one_i2c(struct platform_device *op, in
if (!bp)
return NULL;
+ INIT_LIST_HEAD(&bp->temps);
+ INIT_LIST_HEAD(&bp->fans);
+
bp->i2c_control_regs = of_ioremap(&op->resource[0], 0, 0x2, "bbc_i2c_regs");
if (!bp->i2c_control_regs)
goto fail;
- bp->i2c_bussel_reg = of_ioremap(&op->resource[1], 0, 0x1, "bbc_i2c_bussel");
- if (!bp->i2c_bussel_reg)
- goto fail;
+ if (op->num_resources == 2) {
+ bp->i2c_bussel_reg = of_ioremap(&op->resource[1], 0, 0x1, "bbc_i2c_bussel");
+ if (!bp->i2c_bussel_reg)
+ goto fail;
+ }
bp->waiting = 0;
init_waitqueue_head(&bp->wq);
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 095/131] openrisc: add missing header inclusion
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (10 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 117/131] bbc-i2c: Fix BBC I2C envctrl on SunBlade 2000 Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 055/131] hwmon: (lm92) Prevent overflow problem when writing large limits Ben Hutchings
` (120 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Jack Thomasson, Christian Svensson, Stefan Kristiansson,
Jonas Bonn
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
commit 160d83781a32e94a1e337efd6722939001e62398 upstream.
Prevents build issue with updated toolchain
Reported-by: Jack Thomasson <jkt@moonlitsw.com>
Tested-by: Christian Svensson <blue@cmd.nu>
Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Signed-off-by: Jonas Bonn <jonas@southpole.se>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/openrisc/kernel/head.S | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/openrisc/kernel/head.S b/arch/openrisc/kernel/head.S
index b357e7f..1d3c9c2 100644
--- a/arch/openrisc/kernel/head.S
+++ b/arch/openrisc/kernel/head.S
@@ -19,6 +19,7 @@
#include <linux/threads.h>
#include <linux/errno.h>
#include <linux/init.h>
+#include <linux/serial_reg.h>
#include <asm/processor.h>
#include <asm/page.h>
#include <asm/mmu.h>
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 055/131] hwmon: (lm92) Prevent overflow problem when writing large limits
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (11 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 095/131] openrisc: add missing header inclusion Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 018/131] hwmon: (smsc47m192) Fix temperature limit and vrm write operations Ben Hutchings
` (119 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Guenter Roeck, Axel Lin
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Axel Lin <axel.lin@ingics.com>
commit 5b963089161b8fb244889c972edf553b9d737545 upstream.
On platforms with sizeof(int) < sizeof(long), writing a temperature
limit larger than MAXINT will result in unpredictable limit values
written to the chip. Avoid auto-conversion from long to int to fix
the problem.
The hysteresis temperature range depends on the value of
data->temp[attr->index], since val is subtracted from it.
Use a wider clamp, [-120000, 220000] should do to cover the
possible range. Also add missing TEMP_TO_REG() on writes into
cached hysteresis value.
Also uses clamp_val to simplify the code a bit.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
[Guenter Roeck: Fixed double TEMP_TO_REG on hysteresis updates]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
[bwh: Backported to 3.2:
- s/temp\[attr->index\]/temp1_crit/
- s/temp\[t_hyst\]/temp1_hyst/]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/hwmon/lm92.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
--- a/drivers/hwmon/lm92.c
+++ b/drivers/hwmon/lm92.c
@@ -73,12 +73,9 @@ static inline int TEMP_FROM_REG(s16 reg)
return reg / 8 * 625 / 10;
}
-static inline s16 TEMP_TO_REG(int val)
+static inline s16 TEMP_TO_REG(long val)
{
- if (val <= -60000)
- return -60000 * 10 / 625 * 8;
- if (val >= 160000)
- return 160000 * 10 / 625 * 8;
+ val = clamp_val(val, -60000, 160000);
return val * 10 / 625 * 8;
}
@@ -192,10 +189,12 @@ static ssize_t set_temp1_crit_hyst(struc
struct lm92_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
+ val = clamp_val(val, -120000, 220000);
mutex_lock(&data->update_lock);
- data->temp1_hyst = TEMP_FROM_REG(data->temp1_crit) - val;
+ data->temp1_hyst =
+ TEMP_TO_REG(TEMP_FROM_REG(data->temp1_crit) - val);
i2c_smbus_write_word_swapped(client, LM92_REG_TEMP_HYST,
- TEMP_TO_REG(data->temp1_hyst));
+ data->temp1_hyst);
mutex_unlock(&data->update_lock);
return count;
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 018/131] hwmon: (smsc47m192) Fix temperature limit and vrm write operations
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (12 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 055/131] hwmon: (lm92) Prevent overflow problem when writing large limits Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 012/131] scsi: handle flush errors properly Ben Hutchings
` (118 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Guenter Roeck, Axel Lin, Jean Delvare
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
commit 043572d5444116b9d9ad8ae763cf069e7accbc30 upstream.
Temperature limit clamps are applied after converting the temperature
from milli-degrees C to degrees C, so either the clamp limit needs
to be specified in degrees C, not milli-degrees C, or clamping must
happen before converting to degrees C. Use the latter method to avoid
overflows.
vrm is an u8, so the written value needs to be limited to [0, 255].
Cc: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
[bwh: Backported to 3.2:
- Driver is not using clamp_val(); keep using SENSORS_LIMIT() for consistency
- Driver is not using kstrtoul(); make the minimum change to set_vrm() so
we can validate the value before assigning]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/hwmon/smsc47m192.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/hwmon/smsc47m192.c
+++ b/drivers/hwmon/smsc47m192.c
@@ -84,7 +84,7 @@ static inline u8 IN_TO_REG(unsigned long
REG: 1C/bit, two's complement */
static inline s8 TEMP_TO_REG(int val)
{
- return SENSORS_LIMIT(SCALE(val, 1, 1000), -128000, 127000);
+ return SCALE(SENSORS_LIMIT(val, -128000, 127000), 1, 1000);
}
static inline int TEMP_FROM_REG(s8 val)
@@ -349,7 +349,13 @@ static ssize_t set_vrm(struct device *de
const char *buf, size_t count)
{
struct smsc47m192_data *data = dev_get_drvdata(dev);
- data->vrm = simple_strtoul(buf, NULL, 10);
+ unsigned long val;
+
+ val = simple_strtoul(buf, NULL, 10);
+ if (val > 255)
+ return -EINVAL;
+
+ data->vrm = val;
return count;
}
static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 012/131] scsi: handle flush errors properly
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (13 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 018/131] hwmon: (smsc47m192) Fix temperature limit and vrm write operations Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 002/131] ASoC: samsung: Correct I2S DAI suspend/resume ops Ben Hutchings
` (117 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, James Bottomley, Martin K. Petersen, Steven Haber,
Christoph Hellwig
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: James Bottomley <JBottomley@Parallels.com>
commit 89fb4cd1f717a871ef79fa7debbe840e3225cd54 upstream.
Flush commands don't transfer data and thus need to be special cased
in the I/O completion handler so that we can propagate errors to
the block layer and filesystem.
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Reported-by: Steven Haber <steven@qumulo.com>
Tested-by: Steven Haber <steven@qumulo.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/scsi/scsi_lib.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -793,6 +793,14 @@ void scsi_io_completion(struct scsi_cmnd
scsi_next_command(cmd);
return;
}
+ } else if (blk_rq_bytes(req) == 0 && result && !sense_deferred) {
+ /*
+ * Certain non BLOCK_PC requests are commands that don't
+ * actually transfer anything (FLUSH), so cannot use
+ * good_bytes != blk_rq_bytes(req) as the signal for an error.
+ * This sets the error explicitly for the problem case.
+ */
+ error = __scsi_error_from_host_byte(cmd, result);
}
/* no bidi support for !REQ_TYPE_BLOCK_PC yet */
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 002/131] ASoC: samsung: Correct I2S DAI suspend/resume ops
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (14 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 012/131] scsi: handle flush errors properly Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 079/131] MIPS: OCTEON: make get_system_type() thread-safe Ben Hutchings
` (116 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Mark Brown, Sylwester Nawrocki
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Sylwester Nawrocki <s.nawrocki@samsung.com>
commit d3d4e5247b013008a39e4d5f69ce4c60ed57f997 upstream.
We should save/restore relevant I2S registers regardless of
the dai->active flag, otherwise some settings are being lost
after system suspend/resume cycle. E.g. I2S slave mode set only
during dai initialization is not preserved and the device ends
up in master mode after system resume.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
sound/soc/samsung/i2s.c | 16 ++++++----------
1 file changed, 6 insertions(+), 10 deletions(-)
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -824,11 +824,9 @@ static int i2s_suspend(struct snd_soc_da
{
struct i2s_dai *i2s = to_info(dai);
- if (dai->active) {
- i2s->suspend_i2smod = readl(i2s->addr + I2SMOD);
- i2s->suspend_i2scon = readl(i2s->addr + I2SCON);
- i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR);
- }
+ i2s->suspend_i2smod = readl(i2s->addr + I2SMOD);
+ i2s->suspend_i2scon = readl(i2s->addr + I2SCON);
+ i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR);
return 0;
}
@@ -837,11 +835,9 @@ static int i2s_resume(struct snd_soc_dai
{
struct i2s_dai *i2s = to_info(dai);
- if (dai->active) {
- writel(i2s->suspend_i2scon, i2s->addr + I2SCON);
- writel(i2s->suspend_i2smod, i2s->addr + I2SMOD);
- writel(i2s->suspend_i2spsr, i2s->addr + I2SPSR);
- }
+ writel(i2s->suspend_i2scon, i2s->addr + I2SCON);
+ writel(i2s->suspend_i2smod, i2s->addr + I2SMOD);
+ writel(i2s->suspend_i2spsr, i2s->addr + I2SPSR);
return 0;
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 079/131] MIPS: OCTEON: make get_system_type() thread-safe
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (15 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 002/131] ASoC: samsung: Correct I2S DAI suspend/resume ops Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 033/131] ext4: cleanup in ext4_discard_allocated_blocks() Ben Hutchings
` (115 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, James Hogan, Aaro Koskinen, Markos Chandras
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Aaro Koskinen <aaro.koskinen@nsn.com>
commit 608308682addfdc7b8e2aee88f0e028331d88e4d upstream.
get_system_type() is not thread-safe on OCTEON. It uses static data,
also more dangerous issue is that it's calling cvmx_fuse_read_byte()
every time without any synchronization. Currently it's possible to get
processes stuck looping forever in kernel simply by launching multiple
readers of /proc/cpuinfo:
(while true; do cat /proc/cpuinfo > /dev/null; done) &
(while true; do cat /proc/cpuinfo > /dev/null; done) &
...
Fix by initializing the system type string only once during the early
boot.
Signed-off-by: Aaro Koskinen <aaro.koskinen@nsn.com>
Reviewed-by: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: http://patchwork.linux-mips.org/patch/7437/
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/mips/cavium-octeon/setup.c | 18 +++++++++++++-----
1 file changed, 13 insertions(+), 5 deletions(-)
--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -266,6 +266,18 @@ static irqreturn_t octeon_rlm_interrupt(
}
#endif
+static char __read_mostly octeon_system_type[80];
+
+static int __init init_octeon_system_type(void)
+{
+ snprintf(octeon_system_type, sizeof(octeon_system_type), "%s (%s)",
+ cvmx_board_type_to_string(octeon_bootinfo->board_type),
+ octeon_model_get_string(read_c0_prid()));
+
+ return 0;
+}
+early_initcall(init_octeon_system_type);
+
/**
* Return a string representing the system type
*
@@ -273,11 +285,7 @@ static irqreturn_t octeon_rlm_interrupt(
*/
const char *octeon_board_type_string(void)
{
- static char name[80];
- sprintf(name, "%s (%s)",
- cvmx_board_type_to_string(octeon_bootinfo->board_type),
- octeon_model_get_string(read_c0_prid()));
- return name;
+ return octeon_system_type;
}
const char *get_system_type(void)
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 033/131] ext4: cleanup in ext4_discard_allocated_blocks()
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (16 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 079/131] MIPS: OCTEON: make get_system_type() thread-safe Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 011/131] Bluetooth: never linger on process exit Ben Hutchings
` (114 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Zheng Liu, Zheng Liu, Theodore Ts'o
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Zheng Liu <gnehzuil.liu@gmail.com>
commit 400db9d30146dc062aaba97a6301b425eb6015bc upstream.
remove 'len' variable in ext4_discard_allocated_blocks() because it is
useless.
Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
fs/ext4/mballoc.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3128,13 +3128,9 @@ static void ext4_mb_collect_stats(struct
static void ext4_discard_allocated_blocks(struct ext4_allocation_context *ac)
{
struct ext4_prealloc_space *pa = ac->ac_pa;
- int len;
-
- if (pa && pa->pa_type == MB_INODE_PA) {
- len = ac->ac_b_ex.fe_len;
- pa->pa_free += len;
- }
+ if (pa && pa->pa_type == MB_INODE_PA)
+ pa->pa_free += ac->ac_b_ex.fe_len;
}
/*
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 011/131] Bluetooth: never linger on process exit
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (17 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 033/131] ext4: cleanup in ext4_discard_allocated_blocks() Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 048/131] ALSA: virtuoso: add Xonar Essence STX II support Ben Hutchings
` (113 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Marcel Holtmann, Vladimir Davydov
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Vladimir Davydov <vdavydov@parallels.com>
commit 093facf3634da1b0c2cc7ed106f1983da901bbab upstream.
If the current process is exiting, lingering on socket close will make
it unkillable, so we should avoid it.
Reproducer:
#include <sys/types.h>
#include <sys/socket.h>
#define BTPROTO_L2CAP 0
#define BTPROTO_SCO 2
#define BTPROTO_RFCOMM 3
int main()
{
int fd;
struct linger ling;
fd = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
//or: fd = socket(PF_BLUETOOTH, SOCK_DGRAM, BTPROTO_L2CAP);
//or: fd = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_SCO);
ling.l_onoff = 1;
ling.l_linger = 1000000000;
setsockopt(fd, SOL_SOCKET, SO_LINGER, &ling, sizeof(ling));
return 0;
}
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
net/bluetooth/l2cap_sock.c | 3 ++-
net/bluetooth/rfcomm/sock.c | 3 ++-
net/bluetooth/sco.c | 6 ++++--
3 files changed, 8 insertions(+), 4 deletions(-)
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -804,7 +804,8 @@ static int l2cap_sock_shutdown(struct so
sk->sk_shutdown = SHUTDOWN_MASK;
l2cap_chan_close(chan, 0);
- if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
+ if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
+ !(current->flags & PF_EXITING))
err = bt_sock_wait_state(sk, BT_CLOSED,
sk->sk_lingertime);
}
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -901,7 +901,8 @@ static int rfcomm_sock_shutdown(struct s
sk->sk_shutdown = SHUTDOWN_MASK;
__rfcomm_sock_close(sk);
- if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
+ if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
+ !(current->flags & PF_EXITING))
err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
}
release_sock(sk);
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -774,7 +774,8 @@ static int sco_sock_shutdown(struct sock
sco_sock_clear_timer(sk);
__sco_sock_close(sk);
- if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
+ if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
+ !(current->flags & PF_EXITING))
err = bt_sock_wait_state(sk, BT_CLOSED,
sk->sk_lingertime);
}
@@ -794,7 +795,8 @@ static int sco_sock_release(struct socke
sco_sock_close(sk);
- if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) {
+ if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
+ !(current->flags & PF_EXITING)) {
lock_sock(sk);
err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
release_sock(sk);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 048/131] ALSA: virtuoso: add Xonar Essence STX II support
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (18 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 011/131] Bluetooth: never linger on process exit Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 098/131] openrisc: include export.h for EXPORT_SYMBOL Ben Hutchings
` (112 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Mario, Takashi Iwai, corubba, Clemens Ladisch
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Clemens Ladisch <clemens@ladisch.de>
commit f42bb22243d2ae264d721b055f836059fe35321f upstream.
Just add the PCI ID for the STX II. It appears to work the same as the
STX, except for the addition of the not-yet-supported daughterboard.
Tested-by: Mario <fugazzi99@gmail.com>
Tested-by: corubba <corubba@gmx.de>
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
Documentation/sound/alsa/ALSA-Configuration.txt | 4 ++--
sound/pci/Kconfig | 4 ++--
sound/pci/oxygen/virtuoso.c | 1 +
sound/pci/oxygen/xonar_pcm179x.c | 12 ++++++++++--
4 files changed, 15 insertions(+), 6 deletions(-)
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -2018,8 +2018,8 @@ Prior to version 0.9.0rc4 options had a
-------------------
Module for sound cards based on the Asus AV66/AV100/AV200 chips,
- i.e., Xonar D1, DX, D2, D2X, DS, Essence ST (Deluxe), Essence STX,
- HDAV1.3 (Deluxe), and HDAV1.3 Slim.
+ i.e., Xonar D1, DX, D2, D2X, DS, DSX, Essence ST (Deluxe),
+ Essence STX (II), HDAV1.3 (Deluxe), and HDAV1.3 Slim.
This module supports autoprobe and multiple cards.
--- a/sound/pci/Kconfig
+++ b/sound/pci/Kconfig
@@ -852,8 +852,8 @@ config SND_VIRTUOSO
select SND_JACK if INPUT=y || INPUT=SND
help
Say Y here to include support for sound cards based on the
- Asus AV66/AV100/AV200 chips, i.e., Xonar D1, DX, D2, D2X, DS,
- Essence ST (Deluxe), and Essence STX.
+ Asus AV66/AV100/AV200 chips, i.e., Xonar D1, DX, D2, D2X, DS, DSX,
+ Essence ST (Deluxe), and Essence STX (II).
Support for the HDAV1.3 (Deluxe) and HDAV1.3 Slim is experimental;
for the Xense, missing.
--- a/sound/pci/oxygen/virtuoso.c
+++ b/sound/pci/oxygen/virtuoso.c
@@ -53,6 +53,7 @@ static DEFINE_PCI_DEVICE_TABLE(xonar_ids
{ OXYGEN_PCI_SUBID(0x1043, 0x835e) },
{ OXYGEN_PCI_SUBID(0x1043, 0x838e) },
{ OXYGEN_PCI_SUBID(0x1043, 0x8522) },
+ { OXYGEN_PCI_SUBID(0x1043, 0x85f4) },
{ OXYGEN_PCI_SUBID_BROKEN_EEPROM },
{ }
};
--- a/sound/pci/oxygen/xonar_pcm179x.c
+++ b/sound/pci/oxygen/xonar_pcm179x.c
@@ -100,8 +100,8 @@
*/
/*
- * Xonar Essence ST (Deluxe)/STX
- * -----------------------------
+ * Xonar Essence ST (Deluxe)/STX (II)
+ * ----------------------------------
*
* CMI8788:
*
@@ -1137,6 +1137,14 @@ int __devinit get_xonar_pcm179x_model(st
chip->model.init = xonar_stx_init;
chip->model.resume = xonar_stx_resume;
chip->model.set_dac_params = set_pcm1796_params;
+ break;
+ case 0x85f4:
+ chip->model = model_xonar_st;
+ /* TODO: daughterboard support */
+ chip->model.shortname = "Xonar STX II";
+ chip->model.init = xonar_stx_init;
+ chip->model.resume = xonar_stx_resume;
+ chip->model.set_dac_params = set_pcm1796_params;
break;
default:
return -EINVAL;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 098/131] openrisc: include export.h for EXPORT_SYMBOL
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (19 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 048/131] ALSA: virtuoso: add Xonar Essence STX II support Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 077/131] xhci: Treat not finding the event_seg on COMP_STOP the same as COMP_STOP_INVAL Ben Hutchings
` (111 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Jonas Bonn
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Jonas Bonn <jonas@southpole.se>
commit abdf8b5e07884a183938969253770164d60b87cb upstream.
Use of EXPORT_SYMBOL requires inclusion of export.h
Signed-off-by: Jonas Bonn <jonas@southpole.se>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/openrisc/kernel/init_task.c | 1 +
arch/openrisc/kernel/irq.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/arch/openrisc/kernel/init_task.c b/arch/openrisc/kernel/init_task.c
index 45744a38..ca53408 100644
--- a/arch/openrisc/kernel/init_task.c
+++ b/arch/openrisc/kernel/init_task.c
@@ -17,6 +17,7 @@
#include <linux/init_task.h>
#include <linux/mqueue.h>
+#include <linux/export.h>
static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
diff --git a/arch/openrisc/kernel/irq.c b/arch/openrisc/kernel/irq.c
index 59b3023..4bfead2 100644
--- a/arch/openrisc/kernel/irq.c
+++ b/arch/openrisc/kernel/irq.c
@@ -23,6 +23,7 @@
#include <linux/irq.h>
#include <linux/seq_file.h>
#include <linux/kernel_stat.h>
+#include <linux/export.h>
#include <linux/irqflags.h>
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 077/131] xhci: Treat not finding the event_seg on COMP_STOP the same as COMP_STOP_INVAL
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (20 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 098/131] openrisc: include export.h for EXPORT_SYMBOL Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 069/131] md/raid6: avoid data corruption during recovery of double-degraded RAID6 Ben Hutchings
` (110 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Greg Kroah-Hartman, Mathias Nyman, Hans de Goede
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Hans de Goede <hdegoede@redhat.com>
commit 9a54886342e227433aebc9d374f8ae268a836475 upstream.
When using a Renesas uPD720231 chipset usb-3 uas to sata bridge with a 120G
Crucial M500 ssd, model string: Crucial_ CT120M500SSD1, together with a
the integrated Intel xhci controller on a Haswell laptop:
00:14.0 USB controller [0c03]: Intel Corporation 8 Series USB xHCI HC [8086:9c31] (rev 04)
The following error gets logged to dmesg:
xhci error: Transfer event TRB DMA ptr not part of current TD
Treating COMP_STOP the same as COMP_STOP_INVAL when no event_seg gets found
fixes this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/host/xhci-ring.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -2433,7 +2433,8 @@ static int handle_tx_event(struct xhci_h
* last TRB of the previous TD. The command completion handle
* will take care the rest.
*/
- if (!event_seg && trb_comp_code == COMP_STOP_INVAL) {
+ if (!event_seg && (trb_comp_code == COMP_STOP ||
+ trb_comp_code == COMP_STOP_INVAL)) {
ret = 0;
goto cleanup;
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 069/131] md/raid6: avoid data corruption during recovery of double-degraded RAID6
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (21 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 077/131] xhci: Treat not finding the event_seg on COMP_STOP the same as COMP_STOP_INVAL Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 008/131] [media] gspca_pac7302: Add new usb-id for Genius i-Look 317 Ben Hutchings
` (109 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, NeilBrown, Dan Williams, Manibalan P, Yuri Tikhonov
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: NeilBrown <neilb@suse.de>
commit 9c4bdf697c39805078392d5ddbbba5ae5680e0dd upstream.
During recovery of a double-degraded RAID6 it is possible for
some blocks not to be recovered properly, leading to corruption.
If a write happens to one block in a stripe that would be written to a
missing device, and at the same time that stripe is recovering data
to the other missing device, then that recovered data may not be written.
This patch skips, in the double-degraded case, an optimisation that is
only safe for single-degraded arrays.
Bug was introduced in 2.6.32 and fix is suitable for any kernel since
then. In an older kernel with separate handle_stripe5() and
handle_stripe6() functions the patch must change handle_stripe6().
Fixes: 6c0069c0ae9659e3a91b68eaed06a5c6c37f45c8
Cc: Yuri Tikhonov <yur@emcraft.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Reported-by: "Manibalan P" <pmanibalan@amiindia.co.in>
Tested-by: "Manibalan P" <pmanibalan@amiindia.co.in>
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1090423
Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/md/raid5.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -3240,6 +3240,8 @@ static void handle_stripe(struct stripe_
set_bit(R5_Wantwrite, &dev->flags);
if (prexor)
continue;
+ if (s.failed > 1)
+ continue;
if (!test_bit(R5_Insync, &dev->flags) ||
((i == sh->pd_idx || i == sh->qd_idx) &&
s.failed == 0))
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 008/131] [media] gspca_pac7302: Add new usb-id for Genius i-Look 317
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (22 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 069/131] md/raid6: avoid data corruption during recovery of double-degraded RAID6 Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 063/131] powerpc: Fix build errors STRICT_MM_TYPECHECKS Ben Hutchings
` (108 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Hans de Goede, Mauro Carvalho Chehab
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Hans de Goede <hdegoede@redhat.com>
commit 242841d3d71191348f98310e2d2001e1001d8630 upstream.
Tested-and-reported-by: yullaw <yullaw@mageia.cz>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
[bwh: Backported to 3.2: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/media/video/gspca/pac7302.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/media/video/gspca/pac7302.c
+++ b/drivers/media/video/gspca/pac7302.c
@@ -1190,6 +1190,7 @@ static const struct usb_device_id device
{USB_DEVICE(0x093a, 0x2620)},
{USB_DEVICE(0x093a, 0x2621)},
{USB_DEVICE(0x093a, 0x2622), .driver_info = FL_VFLIP},
+ {USB_DEVICE(0x093a, 0x2623), .driver_info = FL_VFLIP},
{USB_DEVICE(0x093a, 0x2624), .driver_info = FL_VFLIP},
{USB_DEVICE(0x093a, 0x2625)},
{USB_DEVICE(0x093a, 0x2626)},
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 063/131] powerpc: Fix build errors STRICT_MM_TYPECHECKS
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (23 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 008/131] [media] gspca_pac7302: Add new usb-id for Genius i-Look 317 Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 112/131] sparc64: Don't bark so loudly about 32-bit tasks generating 64-bit fault addresses Ben Hutchings
` (107 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Benjamin Herrenschmidt, Aneesh Kumar K.V
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
commit 83d5e64b7efa7f39b10ff5e92792e807a720289c upstream.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/powerpc/include/asm/pte-hash64-64k.h | 2 +-
arch/powerpc/kernel/pci-common.c | 5 ++---
arch/powerpc/mm/init_64.c | 3 ++-
3 files changed, 5 insertions(+), 5 deletions(-)
--- a/arch/powerpc/include/asm/pte-hash64-64k.h
+++ b/arch/powerpc/include/asm/pte-hash64-64k.h
@@ -47,7 +47,7 @@
* generic accessors and iterators here
*/
#define __real_pte(e,p) ((real_pte_t) { \
- (e), ((e) & _PAGE_COMBO) ? \
+ (e), (pte_val(e) & _PAGE_COMBO) ? \
(pte_val(*((p) + PTRS_PER_PTE))) : 0 })
#define __rpte_to_hidx(r,index) ((pte_val((r).pte) & _PAGE_COMBO) ? \
(((r).hidx >> ((index)<<2)) & 0xf) : ((pte_val((r).pte) >> 12) & 0xf))
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -363,7 +363,6 @@ static pgprot_t __pci_mmap_set_pgprot(st
enum pci_mmap_state mmap_state,
int write_combine)
{
- unsigned long prot = pgprot_val(protection);
/* Write combine is always 0 on non-memory space mappings. On
* memory space, if the user didn't pass 1, we check for a
@@ -380,9 +379,9 @@ static pgprot_t __pci_mmap_set_pgprot(st
/* XXX would be nice to have a way to ask for write-through */
if (write_combine)
- return pgprot_noncached_wc(prot);
+ return pgprot_noncached_wc(protection);
else
- return pgprot_noncached(prot);
+ return pgprot_noncached(protection);
}
/*
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -218,7 +218,8 @@ static void __meminit vmemmap_create_map
unsigned long phys)
{
int mapped = htab_bolt_mapping(start, start + page_size, phys,
- PAGE_KERNEL, mmu_vmemmap_psize,
+ pgprot_val(PAGE_KERNEL),
+ mmu_vmemmap_psize,
mmu_kernel_ssize);
BUG_ON(mapped < 0);
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 112/131] sparc64: Don't bark so loudly about 32-bit tasks generating 64-bit fault addresses.
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (24 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 063/131] powerpc: Fix build errors STRICT_MM_TYPECHECKS Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 119/131] sparc64: ldc_connect() should not return EINVAL when handshake is in progress Ben Hutchings
` (106 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, David S. Miller
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "David S. Miller" <davem@davemloft.net>
[ Upstream commit e5c460f46ae7ee94831cb55cb980f942aa9e5a85 ]
This was found using Dave Jone's trinity tool.
When a user process which is 32-bit performs a load or a store, the
cpu chops off the top 32-bits of the effective address before
translating it.
This is because we run 32-bit tasks with the PSTATE_AM (address
masking) bit set.
We can't run the kernel with that bit set, so when the kernel accesses
userspace no address masking occurs.
Since a 32-bit process will have no mappings in that region we will
properly fault, so we don't try to handle this using access_ok(),
which can safely just be a NOP on sparc64.
Real faults from 32-bit processes should never generate such addresses
so a bug check was added long ago, and it barks in the logs if this
happens.
But it also barks when a kernel user access causes this condition, and
that _can_ happen. For example, if a pointer passed into a system call
is "0xfffffffc" and the kernel access 4 bytes offset from that pointer.
Just handle such faults normally via the exception entries.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/sparc/mm/fault_64.c | 16 +---------------
1 file changed, 1 insertion(+), 15 deletions(-)
diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c
index 6ac702f..2c0b966 100644
--- a/arch/sparc/mm/fault_64.c
+++ b/arch/sparc/mm/fault_64.c
@@ -282,18 +282,6 @@ static void noinline __kprobes bogus_32bit_fault_tpc(struct pt_regs *regs)
show_regs(regs);
}
-static void noinline __kprobes bogus_32bit_fault_address(struct pt_regs *regs,
- unsigned long addr)
-{
- static int times;
-
- if (times++ < 10)
- printk(KERN_ERR "FAULT[%s:%d]: 32-bit process "
- "reports 64-bit fault address [%lx]\n",
- current->comm, current->pid, addr);
- show_regs(regs);
-}
-
asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
{
struct mm_struct *mm = current->mm;
@@ -321,10 +309,8 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
goto intr_or_no_mm;
}
}
- if (unlikely((address >> 32) != 0)) {
- bogus_32bit_fault_address(regs, address);
+ if (unlikely((address >> 32) != 0))
goto intr_or_no_mm;
- }
}
if (regs->tstate & TSTATE_PRIV) {
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 119/131] sparc64: ldc_connect() should not return EINVAL when handshake is in progress.
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (25 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 112/131] sparc64: Don't bark so loudly about 32-bit tasks generating 64-bit fault addresses Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 096/131] MIPS: perf: Fix build error caused by unused counters_per_cpu_to_total() Ben Hutchings
` (105 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Karl Volz, Sowmini Varadhan, David S. Miller
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Sowmini Varadhan <sowmini.varadhan@oracle.com>
[ Upstream commit 4ec1b01029b4facb651b8ef70bc20a4be4cebc63 ]
The LDC handshake could have been asynchronously triggered
after ldc_bind() enables the ldc_rx() receive interrupt-handler
(and thus intercepts incoming control packets)
and before vio_port_up() calls ldc_connect(). If that is the case,
ldc_connect() should return 0 and let the state-machine
progress.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Karl Volz <karl.volz@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/sparc/kernel/ldc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c
index 435e406..1beaf60 100644
--- a/arch/sparc/kernel/ldc.c
+++ b/arch/sparc/kernel/ldc.c
@@ -1339,7 +1339,7 @@ int ldc_connect(struct ldc_channel *lp)
if (!(lp->flags & LDC_FLAG_ALLOCED_QUEUES) ||
!(lp->flags & LDC_FLAG_REGISTERED_QUEUES) ||
lp->hs_state != LDC_HS_OPEN)
- err = -EINVAL;
+ err = ((lp->hs_state > LDC_HS_OPEN) ? 0 : -EINVAL);
else
err = start_handshake(lp);
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 096/131] MIPS: perf: Fix build error caused by unused counters_per_cpu_to_total()
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (26 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 119/131] sparc64: ldc_connect() should not return EINVAL when handshake is in progress Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 025/131] iommu/vt-d: Exclude devices using RMRRs from IOMMU API domains Ben Hutchings
` (104 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, linux-mips, Florian Fainelli, david.daney, Ralf Baechle
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Florian Fainelli <florian@openwrt.org>
commit 6c37c9580409af7dc664bb6af0a85d540d63aeea upstream.
cc1: warnings being treated as errors
arch/mips/kernel/perf_event_mipsxx.c:166: error: 'counters_per_cpu_to_total' defined but not used
make[2]: *** [arch/mips/kernel/perf_event_mipsxx.o] Error 1
make[2]: *** Waiting for unfinished jobs....
It was first introduced by 82091564cfd7ab8def42777a9c662dbf655c5d25 [MIPS:
perf: Add support for 64-bit perf counters.] in 3.2.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: david.daney@cavium.com
Patchwork: https://patchwork.linux-mips.org/patch/3357/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/mips/kernel/perf_event_mipsxx.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/arch/mips/kernel/perf_event_mipsxx.c b/arch/mips/kernel/perf_event_mipsxx.c
index f29099b..eb5e394 100644
--- a/arch/mips/kernel/perf_event_mipsxx.c
+++ b/arch/mips/kernel/perf_event_mipsxx.c
@@ -162,11 +162,6 @@ static unsigned int counters_total_to_per_cpu(unsigned int counters)
return counters >> vpe_shift();
}
-static unsigned int counters_per_cpu_to_total(unsigned int counters)
-{
- return counters << vpe_shift();
-}
-
#else /* !CONFIG_MIPS_MT_SMP */
#define vpe_id() 0
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 025/131] iommu/vt-d: Exclude devices using RMRRs from IOMMU API domains
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (27 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 096/131] MIPS: perf: Fix build error caused by unused counters_per_cpu_to_total() Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 029/131] MIPS: tlbex: Fix a missing statement for HUGETLB Ben Hutchings
` (103 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, David Woodhouse, Alex Williamson, Joerg Roedel
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Alex Williamson <alex.williamson@redhat.com>
commit c875d2c1b8083cd627ea0463e20bf22c2d7421ee upstream.
The user of the IOMMU API domain expects to have full control of
the IOVA space for the domain. RMRRs are fundamentally incompatible
with that idea. We can neither map the RMRR into the IOMMU API
domain, nor can we guarantee that the device won't continue DMA with
the area described by the RMRR as part of the new domain. Therefore
we must prevent such devices from being used by the IOMMU API.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
[bwh: Backported to 3.2: driver only operates on PCI devices]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2318,19 +2318,34 @@ static bool device_has_rmrr(struct pci_d
return false;
}
+/*
+ * There are a couple cases where we need to restrict the functionality of
+ * devices associated with RMRRs. The first is when evaluating a device for
+ * identity mapping because problems exist when devices are moved in and out
+ * of domains and their respective RMRR information is lost. This means that
+ * a device with associated RMRRs will never be in a "passthrough" domain.
+ * The second is use of the device through the IOMMU API. This interface
+ * expects to have full control of the IOVA space for the device. We cannot
+ * satisfy both the requirement that RMRR access is maintained and have an
+ * unencumbered IOVA space. We also have no ability to quiesce the device's
+ * use of the RMRR space or even inform the IOMMU API user of the restriction.
+ * We therefore prevent devices associated with an RMRR from participating in
+ * the IOMMU API, which eliminates them from device assignment.
+ *
+ * In both cases we assume that PCI USB devices with RMRRs have them largely
+ * for historical reasons and that the RMRR space is not actively used post
+ * boot. This exclusion may change if vendors begin to abuse it.
+ */
+static bool device_is_rmrr_locked(struct pci_dev *pdev)
+{
+ return device_has_rmrr(pdev) &&
+ (pdev->class >> 8) != PCI_CLASS_SERIAL_USB;
+}
+
static int iommu_should_identity_map(struct pci_dev *pdev, int startup)
{
- /*
- * We want to prevent any device associated with an RMRR from
- * getting placed into the SI Domain. This is done because
- * problems exist when devices are moved in and out of domains
- * and their respective RMRR info is lost. We exempt USB devices
- * from this process due to their usage of RMRRs that are known
- * to not be needed after BIOS hand-off to OS.
- */
- if (device_has_rmrr(pdev) &&
- (pdev->class >> 8) != PCI_CLASS_SERIAL_USB)
+ if (device_is_rmrr_locked(pdev))
return 0;
if ((iommu_identity_mapping & IDENTMAP_AZALIA) && IS_AZALIA(pdev))
@@ -3981,6 +3996,11 @@ static int intel_iommu_attach_device(str
struct intel_iommu *iommu;
int addr_width;
+ if (device_is_rmrr_locked(pdev)) {
+ dev_warn(dev, "Device is ineligible for IOMMU domain attach due to platform RMRR requirement. Contact your platform vendor.\n");
+ return -EPERM;
+ }
+
/* normally pdev is not mapped */
if (unlikely(domain_context_mapped(pdev))) {
struct dmar_domain *old_domain;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 029/131] MIPS: tlbex: Fix a missing statement for HUGETLB
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (28 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 025/131] iommu/vt-d: Exclude devices using RMRRs from IOMMU API domains Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 108/131] sparc64: Fix argument sign extension for compat_sys_futex() Ben Hutchings
` (102 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Steven J. Hill, Zhangjin Wu, linux-mips, Fuxin Zhang,
Binbin Zhou, Ralf Baechle, Huacai Chen, John Crispin
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Huacai Chen <chenhc@lemote.com>
commit 8393c524a25609a30129e4a8975cf3b91f6c16a5 upstream.
In commit 2c8c53e28f1 (MIPS: Optimize TLB handlers for Octeon CPUs)
build_r4000_tlb_refill_handler() is modified. But it doesn't compatible
with the original code in HUGETLB case. Because there is a copy & paste
error and one line of code is missing. It is very easy to produce a bug
with LTP's hugemmap05 test.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Binbin Zhou <zhoubb@lemote.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/7496/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/mips/mm/tlbex.c | 1 +
1 file changed, 1 insertion(+)
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -1282,6 +1282,7 @@ static void __cpuinit build_r4000_tlb_re
}
#ifdef CONFIG_HUGETLB_PAGE
uasm_l_tlb_huge_update(&l, p);
+ UASM_i_LW(&p, K0, 0, K1);
build_huge_update_entries(&p, htlb_info.huge_pte, K1);
build_huge_tlb_write_entry(&p, &l, &r, K0, tlb_random,
htlb_info.restore_scratch);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 108/131] sparc64: Fix argument sign extension for compat_sys_futex().
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (29 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 029/131] MIPS: tlbex: Fix a missing statement for HUGETLB Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 074/131] iommu/amd: Fix cleanup_domain for mass device removal Ben Hutchings
` (101 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, David S. Miller
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "David S. Miller" <davem@davemloft.net>
[ Upstream commit aa3449ee9c87d9b7660dd1493248abcc57769e31 ]
Only the second argument, 'op', is signed.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/sparc/kernel/sys32.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/sparc/kernel/sys32.S b/arch/sparc/kernel/sys32.S
index d97f3eb..085c60f 100644
--- a/arch/sparc/kernel/sys32.S
+++ b/arch/sparc/kernel/sys32.S
@@ -87,7 +87,7 @@ SIGN1(sys32_io_submit, compat_sys_io_submit, %o1)
SIGN1(sys32_mq_open, compat_sys_mq_open, %o1)
SIGN1(sys32_select, compat_sys_select, %o0)
SIGN1(sys32_mkdir, sys_mkdir, %o1)
-SIGN3(sys32_futex, compat_sys_futex, %o1, %o2, %o5)
+SIGN1(sys32_futex, compat_sys_futex, %o1)
SIGN1(sys32_sysfs, compat_sys_sysfs, %o0)
SIGN2(sys32_sendfile, compat_sys_sendfile, %o0, %o1)
SIGN2(sys32_sendfile64, compat_sys_sendfile64, %o0, %o1)
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 074/131] iommu/amd: Fix cleanup_domain for mass device removal
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (30 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 108/131] sparc64: Fix argument sign extension for compat_sys_futex() Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 010/131] x86: don't exclude low BIOS area when allocating address space for non-PCI cards Ben Hutchings
` (100 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Marti Raudsepp, Joerg Roedel
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Joerg Roedel <jroedel@suse.de>
commit 9b29d3c6510407d91786c1cf9183ff4debb3473a upstream.
When multiple devices are detached in __detach_device, they
are also removed from the domains dev_list. This makes it
unsafe to use list_for_each_entry_safe, as the next pointer
might also not be in the list anymore after __detach_device
returns. So just repeatedly remove the first element of the
list until it is empty.
Tested-by: Marti Raudsepp <marti@juffo.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/iommu/amd_iommu.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2592,14 +2592,16 @@ free_domains:
static void cleanup_domain(struct protection_domain *domain)
{
- struct iommu_dev_data *dev_data, *next;
+ struct iommu_dev_data *entry;
unsigned long flags;
write_lock_irqsave(&amd_iommu_devtable_lock, flags);
- list_for_each_entry_safe(dev_data, next, &domain->dev_list, list) {
- __detach_device(dev_data);
- atomic_set(&dev_data->bind, 0);
+ while (!list_empty(&domain->dev_list)) {
+ entry = list_first_entry(&domain->dev_list,
+ struct iommu_dev_data, list);
+ __detach_device(entry);
+ atomic_set(&entry->bind, 0);
}
write_unlock_irqrestore(&amd_iommu_devtable_lock, flags);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 010/131] x86: don't exclude low BIOS area when allocating address space for non-PCI cards
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (31 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 074/131] iommu/amd: Fix cleanup_domain for mass device removal Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 049/131] hwmon: (gpio-fan) Prevent overflow problem when writing large limits Ben Hutchings
` (99 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Bjorn Helgaas, Christoph Schulz, Robert Resch
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Christoph Schulz <develop@kristov.de>
commit cbace46a9710a480cae51e4611697df5de41713e upstream.
Commit 30919b0bf356 ("x86: avoid low BIOS area when allocating address
space") moved the test for resource allocations that fall within the first
1MB of address space from the PCI-specific path to a generic path, such
that all resource allocations will avoid this area. However, this breaks
ISA cards which need to allocate a memory region within the first 1MB. An
example is the i82365 PCMCIA controller and derivatives like the Ricoh
RF5C296/396 which map part of the PCMCIA socket memory address space into
the first 1MB of system memory address space. They do not work anymore as
no usable memory region exists due to this change:
Intel ISA PCIC probe: Ricoh RF5C296/396 ISA-to-PCMCIA at port 0x3e0 ofs 0x00, 2 sockets
host opts [0]: none
host opts [1]: none
ISA irqs (scanned) = 3,4,5,9,10 status change on irq 10
pcmcia_socket pcmcia_socket1: pccard: PCMCIA card inserted into slot 1
pcmcia_socket pcmcia_socket0: cs: IO port probe 0xc00-0xcff: excluding 0xcf8-0xcff
pcmcia_socket pcmcia_socket0: cs: IO port probe 0xa00-0xaff: clean.
pcmcia_socket pcmcia_socket0: cs: IO port probe 0x100-0x3ff: excluding 0x170-0x177 0x1f0-0x1f7 0x2f8-0x2ff 0x370-0x37f 0x3c0-0x3e7 0x3f0-0x3ff
pcmcia_socket pcmcia_socket0: cs: memory probe 0x0a0000-0x0affff: excluding 0xa0000-0xaffff
pcmcia_socket pcmcia_socket0: cs: memory probe 0x0b0000-0x0bffff: excluding 0xb0000-0xbffff
pcmcia_socket pcmcia_socket0: cs: memory probe 0x0c0000-0x0cffff: excluding 0xc0000-0xcbfff
pcmcia_socket pcmcia_socket0: cs: memory probe 0x0d0000-0x0dffff: clean.
pcmcia_socket pcmcia_socket0: cs: memory probe 0x0e0000-0x0effff: clean.
pcmcia_socket pcmcia_socket0: cs: memory probe 0x60000000-0x60ffffff: clean.
pcmcia_socket pcmcia_socket0: cs: memory probe 0xa0000000-0xa0ffffff: clean.
pcmcia_socket pcmcia_socket1: cs: IO port probe 0xc00-0xcff: excluding 0xcf8-0xcff
pcmcia_socket pcmcia_socket1: cs: IO port probe 0xa00-0xaff: clean.
pcmcia_socket pcmcia_socket1: cs: IO port probe 0x100-0x3ff: excluding 0x170-0x177 0x1f0-0x1f7 0x2f8-0x2ff 0x370-0x37f 0x3c0-0x3e7 0x3f0-0x3ff
pcmcia_socket pcmcia_socket1: cs: memory probe 0x0a0000-0x0affff: excluding 0xa0000-0xaffff
pcmcia_socket pcmcia_socket1: cs: memory probe 0x0b0000-0x0bffff: excluding 0xb0000-0xbffff
pcmcia_socket pcmcia_socket1: cs: memory probe 0x0c0000-0x0cffff: excluding 0xc0000-0xcbfff
pcmcia_socket pcmcia_socket1: cs: memory probe 0x0d0000-0x0dffff: clean.
pcmcia_socket pcmcia_socket1: cs: memory probe 0x0e0000-0x0effff: clean.
pcmcia_socket pcmcia_socket1: cs: memory probe 0x60000000-0x60ffffff: clean.
pcmcia_socket pcmcia_socket1: cs: memory probe 0xa0000000-0xa0ffffff: clean.
pcmcia_socket pcmcia_socket1: cs: memory probe 0x0cc000-0x0effff: excluding 0xe0000-0xeffff
pcmcia_socket pcmcia_socket1: cs: unable to map card memory!
If filtering out the first 1MB is reverted, everything works as expected.
Tested-by: Robert Resch <fli4l@robert.reschpara.de>
Signed-off-by: Christoph Schulz <develop@kristov.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/x86/kernel/resource.c | 8 +++++---
arch/x86/pci/i386.c | 4 ++++
2 files changed, 9 insertions(+), 3 deletions(-)
--- a/arch/x86/kernel/resource.c
+++ b/arch/x86/kernel/resource.c
@@ -37,10 +37,12 @@ static void remove_e820_regions(struct r
void arch_remove_reservations(struct resource *avail)
{
- /* Trim out BIOS areas (low 1MB and high 2MB) and E820 regions */
+ /*
+ * Trim out BIOS area (high 2MB) and E820 regions. We do not remove
+ * the low 1MB unconditionally, as this area is needed for some ISA
+ * cards requiring a memory range, e.g. the i82365 PCMCIA controller.
+ */
if (avail->flags & IORESOURCE_MEM) {
- if (avail->start < BIOS_END)
- avail->start = BIOS_END;
resource_clip(avail, BIOS_ROM_BASE, BIOS_ROM_END);
remove_e820_regions(avail);
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -73,6 +73,10 @@ pcibios_align_resource(void *data, const
return start;
if (start & 0x300)
start = (start + 0x3ff) & ~0x3ff;
+ } else if (res->flags & IORESOURCE_MEM) {
+ /* The low 1MB range is reserved for ISA cards */
+ if (start < BIOS_END)
+ start = BIOS_END;
}
return start;
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 049/131] hwmon: (gpio-fan) Prevent overflow problem when writing large limits
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (32 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 010/131] x86: don't exclude low BIOS area when allocating address space for non-PCI cards Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 091/131] ARM: 8128/1: abort: don't clear the exclusive monitors Ben Hutchings
` (98 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Guenter Roeck, Axel Lin
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Axel Lin <axel.lin@ingics.com>
commit 2565fb05d1e9fc0831f7b1c083bcfcb1cba1f020 upstream.
On platforms with sizeof(int) < sizeof(unsigned long), writing a rpm value
larger than MAXINT will result in unpredictable limit values written to the
chip. Avoid auto-conversion from unsigned long to int to fix the problem.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/hwmon/gpio-fan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/hwmon/gpio-fan.c
+++ b/drivers/hwmon/gpio-fan.c
@@ -195,7 +195,7 @@ static int get_fan_speed_index(struct gp
return -EINVAL;
}
-static int rpm_to_speed_index(struct gpio_fan_data *fan_data, int rpm)
+static int rpm_to_speed_index(struct gpio_fan_data *fan_data, unsigned long rpm)
{
struct gpio_fan_speed *speed = fan_data->speed;
int i;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 091/131] ARM: 8128/1: abort: don't clear the exclusive monitors
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (33 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 049/131] hwmon: (gpio-fan) Prevent overflow problem when writing large limits Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 120/131] arch/sparc/math-emu/math_32.c: drop stray break operator Ben Hutchings
` (97 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Will Deacon, Russell King, Mark Rutland
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Mark Rutland <mark.rutland@arm.com>
commit 85868313177700d20644263a782351262d2aff84 upstream.
The ARMv6 and ARMv7 early abort handlers clear the exclusive monitors
upon entry to the kernel, but this is redundant:
- We clear the monitors on every exception return since commit
200b812d0084 ("Clear the exclusive monitor when returning from an
exception"), so this is not necessary to ensure the monitors are
cleared before returning from a fault handler.
- Any dummy STREX will target a temporary scratch area in memory, and
may succeed or fail without corrupting useful data. Its status value
will not be used.
- Any other STREX in the kernel must be preceded by an LDREX, which
will initialise the monitors consistently and will not depend on the
earlier state of the monitors.
Therefore we have no reason to care about the initial state of the
exclusive monitors when a data abort is taken, and clearing the monitors
prior to exception return (as we already do) is sufficient.
This patch removes the redundant clearing of the exclusive monitors from
the early abort handlers.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/arm/mm/abort-ev6.S | 6 ------
arch/arm/mm/abort-ev7.S | 6 ------
2 files changed, 12 deletions(-)
--- a/arch/arm/mm/abort-ev6.S
+++ b/arch/arm/mm/abort-ev6.S
@@ -17,12 +17,6 @@
*/
.align 5
ENTRY(v6_early_abort)
-#ifdef CONFIG_CPU_V6
- sub r1, sp, #4 @ Get unused stack location
- strex r0, r1, [r1] @ Clear the exclusive monitor
-#elif defined(CONFIG_CPU_32v6K)
- clrex
-#endif
mrc p15, 0, r1, c5, c0, 0 @ get FSR
mrc p15, 0, r0, c6, c0, 0 @ get FAR
/*
--- a/arch/arm/mm/abort-ev7.S
+++ b/arch/arm/mm/abort-ev7.S
@@ -13,12 +13,6 @@
*/
.align 5
ENTRY(v7_early_abort)
- /*
- * The effect of data aborts on on the exclusive access monitor are
- * UNPREDICTABLE. Do a CLREX to clear the state
- */
- clrex
-
mrc p15, 0, r1, c5, c0, 0 @ get FSR
mrc p15, 0, r0, c6, c0, 0 @ get FAR
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 120/131] arch/sparc/math-emu/math_32.c: drop stray break operator
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (34 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 091/131] ARM: 8128/1: abort: don't clear the exclusive monitors Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 054/131] RDMA/iwcm: Use a default listen backlog if needed Ben Hutchings
` (96 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Andrey Utkin, David Binderman, David S. Miller
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Andrey Utkin <andrey.krieger.utkin@gmail.com>
[ Upstream commit 093758e3daede29cb4ce6aedb111becf9d4bfc57 ]
This commit is a guesswork, but it seems to make sense to drop this
break, as otherwise the following line is never executed and becomes
dead code. And that following line actually saves the result of
local calculation by the pointer given in function argument. So the
proposed change makes sense if this code in the whole makes sense (but I
am unable to analyze it in the whole).
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=81641
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Andrey Utkin <andrey.krieger.utkin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/sparc/math-emu/math_32.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/sparc/math-emu/math_32.c b/arch/sparc/math-emu/math_32.c
index aa4d55b..5ce8f2f 100644
--- a/arch/sparc/math-emu/math_32.c
+++ b/arch/sparc/math-emu/math_32.c
@@ -499,7 +499,7 @@ static int do_one_mathemu(u32 insn, unsigned long *pfsr, unsigned long *fregs)
case 0: fsr = *pfsr;
if (IR == -1) IR = 2;
/* fcc is always fcc0 */
- fsr &= ~0xc00; fsr |= (IR << 10); break;
+ fsr &= ~0xc00; fsr |= (IR << 10);
*pfsr = fsr;
break;
case 1: rd->s = IR; break;
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 054/131] RDMA/iwcm: Use a default listen backlog if needed
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (35 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 120/131] arch/sparc/math-emu/math_32.c: drop stray break operator Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 073/131] USB: ftdi_sio: Added PID for new ekey device Ben Hutchings
` (95 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Roland Dreier, Steve Wise
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Steve Wise <swise@opengridcomputing.com>
commit 2f0304d21867476394cd51a54e97f7273d112261 upstream.
If the user creates a listening cm_id with backlog of 0 the IWCM ends
up not allowing any connection requests at all. The correct behavior
is for the IWCM to pick a default value if the user backlog parameter
is zero.
Lustre from version 1.8.8 onward uses a backlog of 0, which breaks
iwarp support without this fix.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
[bwh: Backported to 3.2: use register_net_sysctl_table()]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/infiniband/core/iwcm.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
--- a/drivers/infiniband/core/iwcm.c
+++ b/drivers/infiniband/core/iwcm.c
@@ -46,6 +46,7 @@
#include <linux/completion.h>
#include <linux/slab.h>
#include <linux/module.h>
+#include <linux/sysctl.h>
#include <rdma/iw_cm.h>
#include <rdma/ib_addr.h>
@@ -65,6 +66,20 @@ struct iwcm_work {
struct list_head free_list;
};
+static unsigned int default_backlog = 256;
+
+static struct ctl_table_header *iwcm_ctl_table_hdr;
+static struct ctl_table iwcm_ctl_table[] = {
+ {
+ .procname = "default_backlog",
+ .data = &default_backlog,
+ .maxlen = sizeof(default_backlog),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ { }
+};
+
/*
* The following services provide a mechanism for pre-allocating iwcm_work
* elements. The design pre-allocates them based on the cm_id type:
@@ -419,6 +434,9 @@ int iw_cm_listen(struct iw_cm_id *cm_id,
cm_id_priv = container_of(cm_id, struct iwcm_id_private, id);
+ if (!backlog)
+ backlog = default_backlog;
+
ret = alloc_work_entries(cm_id_priv, backlog);
if (ret)
return ret;
@@ -1014,17 +1032,33 @@ int iw_cm_init_qp_attr(struct iw_cm_id *
}
EXPORT_SYMBOL(iw_cm_init_qp_attr);
+static struct ctl_path iwcm_ctl_path[] = {
+ { .procname = "net" },
+ { .procname = "iw_cm" },
+ { }
+};
+
static int __init iw_cm_init(void)
{
iwcm_wq = create_singlethread_workqueue("iw_cm_wq");
if (!iwcm_wq)
return -ENOMEM;
+ iwcm_ctl_table_hdr = register_net_sysctl_table(&init_net,
+ iwcm_ctl_path,
+ iwcm_ctl_table);
+ if (!iwcm_ctl_table_hdr) {
+ pr_err("iw_cm: couldn't register sysctl paths\n");
+ destroy_workqueue(iwcm_wq);
+ return -ENOMEM;
+ }
+
return 0;
}
static void __exit iw_cm_cleanup(void)
{
+ unregister_net_sysctl_table(iwcm_ctl_table_hdr);
destroy_workqueue(iwcm_wq);
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 073/131] USB: ftdi_sio: Added PID for new ekey device
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (36 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 054/131] RDMA/iwcm: Use a default listen backlog if needed Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 041/131] mnt: Change the default remount atime from relatime to the existing value Ben Hutchings
` (94 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Johan Hovold, Jaša Bartelj
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Jaša Bartelj <jasa.bartelj@gmail.com>
commit 646907f5bfb0782c731ae9ff6fb63471a3566132 upstream.
Added support to the ftdi_sio driver for ekey Converter USB which
uses an FT232BM chip.
Signed-off-by: Jaša Bartelj <jasa.bartelj@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/serial/ftdi_sio.c | 2 ++
drivers/usb/serial/ftdi_sio_ids.h | 5 +++++
2 files changed, 7 insertions(+)
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -959,6 +959,8 @@ static struct usb_device_id id_table_com
{ USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_2_PID) },
{ USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_3_PID) },
{ USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_4_PID) },
+ /* ekey Devices */
+ { USB_DEVICE(FTDI_VID, FTDI_EKEY_CONV_USB_PID) },
{ }, /* Optional parameter entry */
{ } /* Terminating entry */
};
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -1374,3 +1374,8 @@
#define BRAINBOXES_US_160_6_PID 0x9006 /* US-160 16xRS232 1Mbaud Port 11 and 12 */
#define BRAINBOXES_US_160_7_PID 0x9007 /* US-160 16xRS232 1Mbaud Port 13 and 14 */
#define BRAINBOXES_US_160_8_PID 0x9008 /* US-160 16xRS232 1Mbaud Port 15 and 16 */
+
+/*
+ * ekey biometric systems GmbH (http://ekey.net/)
+ */
+#define FTDI_EKEY_CONV_USB_PID 0xCB08 /* Converter USB */
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 041/131] mnt: Change the default remount atime from relatime to the existing value
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (37 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 073/131] USB: ftdi_sio: Added PID for new ekey device Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 060/131] x86/xen: resume timer irqs early Ben Hutchings
` (93 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Serge E. Hallyn, Eric W. Biederman
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "Eric W. Biederman" <ebiederm@xmission.com>
commit ffbc6f0ead47fa5a1dc9642b0331cb75c20a640e upstream.
Since March 2009 the kernel has treated the state that if no
MS_..ATIME flags are passed then the kernel defaults to relatime.
Defaulting to relatime instead of the existing atime state during a
remount is silly, and causes problems in practice for people who don't
specify any MS_...ATIME flags and to get the default filesystem atime
setting. Those users may encounter a permission error because the
default atime setting does not work.
A default that does not work and causes permission problems is
ridiculous, so preserve the existing value to have a default
atime setting that is always guaranteed to work.
Using the default atime setting in this way is particularly
interesting for applications built to run in restricted userspace
environments without /proc mounted, as the existing atime mount
options of a filesystem can not be read from /proc/mounts.
In practice this fixes user space that uses the default atime
setting on remount that are broken by the permission checks
keeping less privileged users from changing more privileged users
atime settings.
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
[bwh: Backported to 3.2: add definition of MNT_ATIME_MASK, as we don't
need the fix that introduced that definition upstream]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2333,6 +2333,14 @@ long do_mount(char *dev_name, char *dir_
if (flags & MS_RDONLY)
mnt_flags |= MNT_READONLY;
+ /* The default atime for remount is preservation */
+ if ((flags & MS_REMOUNT) &&
+ ((flags & (MS_NOATIME | MS_NODIRATIME | MS_RELATIME |
+ MS_STRICTATIME)) == 0)) {
+ mnt_flags &= ~MNT_ATIME_MASK;
+ mnt_flags |= path.mnt->mnt_flags & MNT_ATIME_MASK;
+ }
+
flags &= ~(MS_NOSUID | MS_NOEXEC | MS_NODEV | MS_ACTIVE | MS_BORN |
MS_NOATIME | MS_NODIRATIME | MS_RELATIME| MS_KERNMOUNT |
MS_STRICTATIME);
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -43,6 +43,7 @@ struct mnt_namespace;
*/
#define MNT_SHARED_MASK (MNT_UNBINDABLE)
#define MNT_PROPAGATION_MASK (MNT_SHARED | MNT_UNBINDABLE)
+#define MNT_ATIME_MASK (MNT_NOATIME | MNT_NODIRATIME | MNT_RELATIME )
#define MNT_INTERNAL 0x4000
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 060/131] x86/xen: resume timer irqs early
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (38 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 041/131] mnt: Change the default remount atime from relatime to the existing value Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 085/131] HID: logitech-dj: prevent false errors to be shown Ben Hutchings
` (92 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, David Vrabel, Boris Ostrovsky
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: David Vrabel <david.vrabel@citrix.com>
commit 8d5999df35314607c38fbd6bdd709e25c3a4eeab upstream.
If the timer irqs are resumed during device resume it is possible in
certain circumstances for the resume to hang early on, before device
interrupts are resumed. For an Ubuntu 14.04 PVHVM guest this would
occur in ~0.5% of resume attempts.
It is not entirely clear what is occuring the point of the hang but I
think a task necessary for the resume calls schedule_timeout(),
waiting for a timer interrupt (which never arrives). This failure may
require specific tasks to be running on the other VCPUs to trigger
(processes are not frozen during a suspend/resume if PREEMPT is
disabled).
Add IRQF_EARLY_RESUME to the timer interrupts so they are resumed in
syscore_resume().
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/x86/xen/time.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -397,7 +397,7 @@ void xen_setup_timer(int cpu)
irq = bind_virq_to_irqhandler(VIRQ_TIMER, cpu, xen_timer_interrupt,
IRQF_DISABLED|IRQF_PERCPU|
IRQF_NOBALANCING|IRQF_TIMER|
- IRQF_FORCE_RESUME,
+ IRQF_FORCE_RESUME|IRQF_EARLY_RESUME,
name, NULL);
evt = &per_cpu(xen_clock_events, cpu);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 085/131] HID: logitech-dj: prevent false errors to be shown
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (39 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 060/131] x86/xen: resume timer irqs early Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 114/131] sparc64: Add membar to Niagara2 memcpy code Ben Hutchings
` (91 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Benjamin Tissoires, Jiri Kosina
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Benjamin Tissoires <benjamin.tissoires@redhat.com>
commit 5abfe85c1d4694d5d4bbd13ecc166262b937adf0 upstream.
Commit "HID: logitech: perform bounds checking on device_id early
enough" unfortunately leaks some errors to dmesg which are not real
ones:
- if the report is not a DJ one, then there is not point in checking
the device_id
- the receiver (index 0) can also receive some notifications which
can be safely ignored given the current implementation
Move out the test regarding the report_id and also discards
printing errors when the receiver got notified.
Fixes: ad3e14d7c5268c2e24477c6ef54bbdf88add5d36
Reported-and-tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/hid/hid-logitech-dj.c | 43 +++++++++++++++++++++++++------------------
drivers/hid/hid-logitech-dj.h | 1 +
2 files changed, 26 insertions(+), 18 deletions(-)
--- a/drivers/hid/hid-logitech-dj.c
+++ b/drivers/hid/hid-logitech-dj.c
@@ -679,7 +679,6 @@ static int logi_dj_raw_event(struct hid_
struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
struct dj_report *dj_report = (struct dj_report *) data;
unsigned long flags;
- bool report_processed = false;
dbg_hid("%s, size:%d\n", __func__, size);
@@ -706,34 +705,42 @@ static int logi_dj_raw_event(struct hid_
* device (via hid_input_report() ) and return 1 so hid-core does not do
* anything else with it.
*/
+
+ /* case 1) */
+ if (data[0] != REPORT_ID_DJ_SHORT)
+ return false;
+
if ((dj_report->device_index < DJ_DEVICE_INDEX_MIN) ||
(dj_report->device_index > DJ_DEVICE_INDEX_MAX)) {
- dev_err(&hdev->dev, "%s: invalid device index:%d\n",
+ /*
+ * Device index is wrong, bail out.
+ * This driver can ignore safely the receiver notifications,
+ * so ignore those reports too.
+ */
+ if (dj_report->device_index != DJ_RECEIVER_INDEX)
+ dev_err(&hdev->dev, "%s: invalid device index:%d\n",
__func__, dj_report->device_index);
return false;
}
spin_lock_irqsave(&djrcv_dev->lock, flags);
- if (dj_report->report_id == REPORT_ID_DJ_SHORT) {
- switch (dj_report->report_type) {
- case REPORT_TYPE_NOTIF_DEVICE_PAIRED:
- case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED:
- logi_dj_recv_queue_notification(djrcv_dev, dj_report);
- break;
- case REPORT_TYPE_NOTIF_CONNECTION_STATUS:
- if (dj_report->report_params[CONNECTION_STATUS_PARAM_STATUS] ==
- STATUS_LINKLOSS) {
- logi_dj_recv_forward_null_report(djrcv_dev, dj_report);
- }
- break;
- default:
- logi_dj_recv_forward_report(djrcv_dev, dj_report);
+ switch (dj_report->report_type) {
+ case REPORT_TYPE_NOTIF_DEVICE_PAIRED:
+ case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED:
+ logi_dj_recv_queue_notification(djrcv_dev, dj_report);
+ break;
+ case REPORT_TYPE_NOTIF_CONNECTION_STATUS:
+ if (dj_report->report_params[CONNECTION_STATUS_PARAM_STATUS] ==
+ STATUS_LINKLOSS) {
+ logi_dj_recv_forward_null_report(djrcv_dev, dj_report);
}
- report_processed = true;
+ break;
+ default:
+ logi_dj_recv_forward_report(djrcv_dev, dj_report);
}
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
- return report_processed;
+ return true;
}
static int logi_dj_probe(struct hid_device *hdev,
--- a/drivers/hid/hid-logitech-dj.h
+++ b/drivers/hid/hid-logitech-dj.h
@@ -27,6 +27,7 @@
#define DJ_MAX_PAIRED_DEVICES 6
#define DJ_MAX_NUMBER_NOTIFICATIONS 8
+#define DJ_RECEIVER_INDEX 0
#define DJ_DEVICE_INDEX_MIN 1
#define DJ_DEVICE_INDEX_MAX 6
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 114/131] sparc64: Add membar to Niagara2 memcpy code.
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (40 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 085/131] HID: logitech-dj: prevent false errors to be shown Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 014/131] ahci: add support for the Promise FastTrak TX8660 SATA HBA (ahci mode) Ben Hutchings
` (90 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, David S. Miller
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "David S. Miller" <davem@davemloft.net>
[ Upstream commit 5aa4ecfd0ddb1e6dcd1c886e6c49677550f581aa ]
This is the prevent previous stores from overlapping the block stores
done by the memcpy loop.
Based upon a glibc patch by Jose E. Marchesi
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/sparc/lib/NG2memcpy.S | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/sparc/lib/NG2memcpy.S b/arch/sparc/lib/NG2memcpy.S
index 0aed756..e993fc8 100644
--- a/arch/sparc/lib/NG2memcpy.S
+++ b/arch/sparc/lib/NG2memcpy.S
@@ -236,6 +236,7 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
*/
VISEntryHalf
+ membar #Sync
alignaddr %o1, %g0, %g0
add %o1, (64 - 1), %o4
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 014/131] ahci: add support for the Promise FastTrak TX8660 SATA HBA (ahci mode)
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (41 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 114/131] sparc64: Add membar to Niagara2 memcpy code Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 026/131] net: sendmsg: fix NULL pointer dereference Ben Hutchings
` (89 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Romain Degez, Tejun Heo
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Romain Degez <romain.degez@gmail.com>
commit b32bfc06aefab61acc872dec3222624e6cd867ed upstream.
Add support of the Promise FastTrak TX8660 SATA HBA in ahci mode by
registering the board in the ahci_pci_tbl[].
Note: this HBA also provide a hardware RAID mode when activated in
BIOS but specific drivers from the manufacturer are required in this
case.
Signed-off-by: Romain Degez <romain.degez@gmail.com>
Tested-by: Romain Degez <romain.degez@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/ata/ahci.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -463,6 +463,7 @@ static const struct pci_device_id ahci_p
/* Promise */
{ PCI_VDEVICE(PROMISE, 0x3f20), board_ahci }, /* PDC42819 */
+ { PCI_VDEVICE(PROMISE, 0x3781), board_ahci }, /* FastTrak TX8660 ahci-mode */
/* Asmedia */
{ PCI_VDEVICE(ASMEDIA, 0x0601), board_ahci }, /* ASM1060 */
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 026/131] net: sendmsg: fix NULL pointer dereference
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (42 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 014/131] ahci: add support for the Promise FastTrak TX8660 SATA HBA (ahci mode) Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 035/131] hwmon: (lm85) Fix various errors on attribute writes Ben Hutchings
` (88 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Hannes Frederic Sowa, Andrey Ryabinin, Sasha Levin,
David S. Miller, Eric Dumazet, Andrey Ryabinin
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Andrey Ryabinin <ryabinin.a.a@gmail.com>
commit 40eea803c6b2cfaab092f053248cbeab3f368412 upstream.
Sasha's report:
> While fuzzing with trinity inside a KVM tools guest running the latest -next
> kernel with the KASAN patchset, I've stumbled on the following spew:
>
> [ 4448.949424] ==================================================================
> [ 4448.951737] AddressSanitizer: user-memory-access on address 0
> [ 4448.952988] Read of size 2 by thread T19638:
> [ 4448.954510] CPU: 28 PID: 19638 Comm: trinity-c76 Not tainted 3.16.0-rc4-next-20140711-sasha-00046-g07d3099-dirty #813
> [ 4448.956823] ffff88046d86ca40 0000000000000000 ffff880082f37e78 ffff880082f37a40
> [ 4448.958233] ffffffffb6e47068 ffff880082f37a68 ffff880082f37a58 ffffffffb242708d
> [ 4448.959552] 0000000000000000 ffff880082f37a88 ffffffffb24255b1 0000000000000000
> [ 4448.961266] Call Trace:
> [ 4448.963158] dump_stack (lib/dump_stack.c:52)
> [ 4448.964244] kasan_report_user_access (mm/kasan/report.c:184)
> [ 4448.965507] __asan_load2 (mm/kasan/kasan.c:352)
> [ 4448.966482] ? netlink_sendmsg (net/netlink/af_netlink.c:2339)
> [ 4448.967541] netlink_sendmsg (net/netlink/af_netlink.c:2339)
> [ 4448.968537] ? get_parent_ip (kernel/sched/core.c:2555)
> [ 4448.970103] sock_sendmsg (net/socket.c:654)
> [ 4448.971584] ? might_fault (mm/memory.c:3741)
> [ 4448.972526] ? might_fault (./arch/x86/include/asm/current.h:14 mm/memory.c:3740)
> [ 4448.973596] ? verify_iovec (net/core/iovec.c:64)
> [ 4448.974522] ___sys_sendmsg (net/socket.c:2096)
> [ 4448.975797] ? put_lock_stats.isra.13 (./arch/x86/include/asm/preempt.h:98 kernel/locking/lockdep.c:254)
> [ 4448.977030] ? lock_release_holdtime (kernel/locking/lockdep.c:273)
> [ 4448.978197] ? lock_release_non_nested (kernel/locking/lockdep.c:3434 (discriminator 1))
> [ 4448.979346] ? check_chain_key (kernel/locking/lockdep.c:2188)
> [ 4448.980535] __sys_sendmmsg (net/socket.c:2181)
> [ 4448.981592] ? trace_hardirqs_on_caller (kernel/locking/lockdep.c:2600)
> [ 4448.982773] ? trace_hardirqs_on (kernel/locking/lockdep.c:2607)
> [ 4448.984458] ? syscall_trace_enter (arch/x86/kernel/ptrace.c:1500 (discriminator 2))
> [ 4448.985621] ? trace_hardirqs_on_caller (kernel/locking/lockdep.c:2600)
> [ 4448.986754] SyS_sendmmsg (net/socket.c:2201)
> [ 4448.987708] tracesys (arch/x86/kernel/entry_64.S:542)
> [ 4448.988929] ==================================================================
This reports means that we've come to netlink_sendmsg() with msg->msg_name == NULL and msg->msg_namelen > 0.
After this report there was no usual "Unable to handle kernel NULL pointer dereference"
and this gave me a clue that address 0 is mapped and contains valid socket address structure in it.
This bug was introduced in f3d3342602f8bcbf37d7c46641cb9bca7618eb1c
(net: rework recvmsg handler msg_name and msg_namelen logic).
Commit message states that:
"Set msg->msg_name = NULL if user specified a NULL in msg_name but had a
non-null msg_namelen in verify_iovec/verify_compat_iovec. This doesn't
affect sendto as it would bail out earlier while trying to copy-in the
address."
But in fact this affects sendto when address 0 is mapped and contains
socket address structure in it. In such case copy-in address will succeed,
verify_iovec() function will successfully exit with msg->msg_namelen > 0
and msg->msg_name == NULL.
This patch fixes it by setting msg_namelen to 0 if msg_name == NULL.
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Cc: Eric Dumazet <edumazet@google.com>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
net/compat.c | 9 +++++----
net/core/iovec.c | 6 +++---
2 files changed, 8 insertions(+), 7 deletions(-)
--- a/net/compat.c
+++ b/net/compat.c
@@ -85,7 +85,7 @@ int verify_compat_iovec(struct msghdr *k
{
int tot_len;
- if (kern_msg->msg_namelen) {
+ if (kern_msg->msg_name && kern_msg->msg_namelen) {
if (mode == VERIFY_READ) {
int err = move_addr_to_kernel(kern_msg->msg_name,
kern_msg->msg_namelen,
@@ -93,10 +93,11 @@ int verify_compat_iovec(struct msghdr *k
if (err < 0)
return err;
}
- if (kern_msg->msg_name)
- kern_msg->msg_name = kern_address;
- } else
+ kern_msg->msg_name = kern_address;
+ } else {
kern_msg->msg_name = NULL;
+ kern_msg->msg_namelen = 0;
+ }
tot_len = iov_from_user_compat_to_kern(kern_iov,
(struct compat_iovec __user *)kern_msg->msg_iov,
--- a/net/core/iovec.c
+++ b/net/core/iovec.c
@@ -39,7 +39,7 @@ int verify_iovec(struct msghdr *m, struc
{
int size, ct, err;
- if (m->msg_namelen) {
+ if (m->msg_name && m->msg_namelen) {
if (mode == VERIFY_READ) {
void __user *namep;
namep = (void __user __force *) m->msg_name;
@@ -48,10 +48,10 @@ int verify_iovec(struct msghdr *m, struc
if (err < 0)
return err;
}
- if (m->msg_name)
- m->msg_name = address;
+ m->msg_name = address;
} else {
m->msg_name = NULL;
+ m->msg_namelen = 0;
}
size = m->msg_iovlen * sizeof(struct iovec);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 035/131] hwmon: (lm85) Fix various errors on attribute writes
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (43 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 026/131] net: sendmsg: fix NULL pointer dereference Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 003/131] block: don't assume last put of shared tags is for the host Ben Hutchings
` (87 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Axel Lin, Guenter Roeck
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
commit 3248c3b771ddd9d31695da17ba350eb6e1b80a53 upstream.
Temperature limit register writes did not account for negative numbers.
As a result, writing -127000 resulted in -126000 written into the
temperature limit register. This problem affected temp[1-3]_min,
temp[1-3]_max, temp[1-3]_auto_temp_crit, and temp[1-3]_auto_temp_min.
When writing pwm[1-3]_freq, a long variable was auto-converted into an int
without range check. Wiring values larger than MAXINT resulted in unexpected
register values.
When writing temp[1-3]_auto_temp_max, an unsigned long variable was
auto-converted into an int without range check. Writing values larger than
MAXINT resulted in unexpected register values.
vrm is an u8, so the written value needs to be limited to [0, 255].
Cc: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
[bwh: Backported to 3.2:
- Driver is not using clamp_val(); keep using SENSORS_LIMIT() for consistency
- Driver is not using kstrtoul(); make the minimum change to store_vrm_reg()
so we can validate the value before assigning]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
--- a/drivers/hwmon/lm85.c
+++ b/drivers/hwmon/lm85.c
@@ -157,7 +157,7 @@ static inline u16 FAN_TO_REG(unsigned lo
/* Temperature is reported in .001 degC increments */
#define TEMP_TO_REG(val) \
- SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127)
+ DIV_ROUND_CLOSEST(SENSORS_LIMIT((val), -127000, 127000), 1000)
#define TEMPEXT_FROM_REG(val, ext) \
SCALE(((val) << 4) + (ext), 16, 1000)
#define TEMP_FROM_REG(val) ((val) * 1000)
@@ -190,7 +190,7 @@ static const int lm85_range_map[] = {
13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
};
-static int RANGE_TO_REG(int range)
+static int RANGE_TO_REG(long range)
{
int i;
@@ -212,7 +212,7 @@ static const int adm1027_freq_map[8] = {
11, 15, 22, 29, 35, 44, 59, 88
};
-static int FREQ_TO_REG(const int *map, int freq)
+static int FREQ_TO_REG(const int *map, unsigned long freq)
{
int i;
@@ -443,7 +443,13 @@ static ssize_t store_vrm_reg(struct devi
const char *buf, size_t count)
{
struct lm85_data *data = dev_get_drvdata(dev);
- data->vrm = simple_strtoul(buf, NULL, 10);
+ unsigned long val;
+
+ val = simple_strtoul(buf, NULL, 10);
+ if (val > 255)
+ return -EINVAL;
+
+ data->vrm = val;
return count;
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 003/131] block: don't assume last put of shared tags is for the host
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (44 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 035/131] hwmon: (lm85) Fix various errors on attribute writes Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 087/131] USB: sisusb: add device id for Magic Control USB video Ben Hutchings
` (86 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Jens Axboe, Christoph Hellwig
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Christoph Hellwig <hch@lst.de>
commit d45b3279a5a2252cafcd665bbf2db8c9b31ef783 upstream.
There is no inherent reason why the last put of a tag structure must be
the one for the Scsi_Host, as device model objects can be held for
arbitrary periods. Merge blk_free_tags and __blk_free_tags into a single
funtion that just release a references and get rid of the BUG() when the
host reference wasn't the last.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
block/blk-tag.c | 33 +++++++--------------------------
1 file changed, 7 insertions(+), 26 deletions(-)
--- a/block/blk-tag.c
+++ b/block/blk-tag.c
@@ -27,18 +27,15 @@ struct request *blk_queue_find_tag(struc
EXPORT_SYMBOL(blk_queue_find_tag);
/**
- * __blk_free_tags - release a given set of tag maintenance info
+ * blk_free_tags - release a given set of tag maintenance info
* @bqt: the tag map to free
*
- * Tries to free the specified @bqt. Returns true if it was
- * actually freed and false if there are still references using it
+ * Drop the reference count on @bqt and frees it when the last reference
+ * is dropped.
*/
-static int __blk_free_tags(struct blk_queue_tag *bqt)
+void blk_free_tags(struct blk_queue_tag *bqt)
{
- int retval;
-
- retval = atomic_dec_and_test(&bqt->refcnt);
- if (retval) {
+ if (atomic_dec_and_test(&bqt->refcnt)) {
BUG_ON(find_first_bit(bqt->tag_map, bqt->max_depth) <
bqt->max_depth);
@@ -50,9 +47,8 @@ static int __blk_free_tags(struct blk_qu
kfree(bqt);
}
-
- return retval;
}
+EXPORT_SYMBOL(blk_free_tags);
/**
* __blk_queue_free_tags - release tag maintenance info
@@ -69,28 +65,13 @@ void __blk_queue_free_tags(struct reques
if (!bqt)
return;
- __blk_free_tags(bqt);
+ blk_free_tags(bqt);
q->queue_tags = NULL;
queue_flag_clear_unlocked(QUEUE_FLAG_QUEUED, q);
}
/**
- * blk_free_tags - release a given set of tag maintenance info
- * @bqt: the tag map to free
- *
- * For externally managed @bqt frees the map. Callers of this
- * function must guarantee to have released all the queues that
- * might have been using this tag map.
- */
-void blk_free_tags(struct blk_queue_tag *bqt)
-{
- if (unlikely(!__blk_free_tags(bqt)))
- BUG();
-}
-EXPORT_SYMBOL(blk_free_tags);
-
-/**
* blk_queue_free_tags - release tag maintenance info
* @q: the request queue for the device
*
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 087/131] USB: sisusb: add device id for Magic Control USB video
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (45 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 003/131] block: don't assume last put of shared tags is for the host Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 076/131] kvm: iommu: fix the third parameter of kvm_iommu_put_pages (CVE-2014-3601) Ben Hutchings
` (85 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Stephen Hemminger, Greg Kroah-Hartman
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Stephen Hemminger <stephen@networkplumber.org>
commit 5b6b80aeb21091ed3030b9b6aae597d81326f1aa upstream.
I have a j5 create (JUA210) USB 2 video device and adding it device id
to SIS USB video gets it to work.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/misc/sisusbvga/sisusb.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/usb/misc/sisusbvga/sisusb.c
+++ b/drivers/usb/misc/sisusbvga/sisusb.c
@@ -3248,6 +3248,7 @@ static const struct usb_device_id sisusb
{ USB_DEVICE(0x0711, 0x0918) },
{ USB_DEVICE(0x0711, 0x0920) },
{ USB_DEVICE(0x0711, 0x0950) },
+ { USB_DEVICE(0x0711, 0x5200) },
{ USB_DEVICE(0x182d, 0x021c) },
{ USB_DEVICE(0x182d, 0x0269) },
{ }
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 076/131] kvm: iommu: fix the third parameter of kvm_iommu_put_pages (CVE-2014-3601)
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (46 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 087/131] USB: sisusb: add device id for Magic Control USB video Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 047/131] ALSA: virtuoso: Xonar DSX support Ben Hutchings
` (84 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Jack Morgenstein, Paolo Bonzini, Michael S. Tsirkin
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "Michael S. Tsirkin" <mst@redhat.com>
commit 350b8bdd689cd2ab2c67c8a86a0be86cfa0751a7 upstream.
The third parameter of kvm_iommu_put_pages is wrong,
It should be 'gfn - slot->base_gfn'.
By making gfn very large, malicious guest or userspace can cause kvm to
go to this error path, and subsequently to pass a huge value as size.
Alternatively if gfn is small, then pages would be pinned but never
unpinned, causing host memory leak and local DOS.
Passing a reasonable but large value could be the most dangerous case,
because it would unpin a page that should have stayed pinned, and thus
allow the device to DMA into arbitrary memory. However, this cannot
happen because of the condition that can trigger the error:
- out of memory (where you can't allocate even a single page)
should not be possible for the attacker to trigger
- when exceeding the iommu's address space, guest pages after gfn
will also exceed the iommu's address space, and inside
kvm_iommu_put_pages() the iommu_iova_to_phys() will fail. The
page thus would not be unpinned at all.
Reported-by: Jack Morgenstein <jackm@mellanox.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
virt/kvm/iommu.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)
--- a/virt/kvm/iommu.c
+++ b/virt/kvm/iommu.c
@@ -61,6 +61,14 @@ static pfn_t kvm_pin_pages(struct kvm *k
return pfn;
}
+static void kvm_unpin_pages(struct kvm *kvm, pfn_t pfn, unsigned long npages)
+{
+ unsigned long i;
+
+ for (i = 0; i < npages; ++i)
+ kvm_release_pfn_clean(pfn + i);
+}
+
int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot)
{
gfn_t gfn, end_gfn;
@@ -121,6 +129,7 @@ int kvm_iommu_map_pages(struct kvm *kvm,
if (r) {
printk(KERN_ERR "kvm_iommu_map_address:"
"iommu failed to map pfn=%llx\n", pfn);
+ kvm_unpin_pages(kvm, pfn, page_size);
goto unmap_pages;
}
@@ -132,7 +141,7 @@ int kvm_iommu_map_pages(struct kvm *kvm,
return 0;
unmap_pages:
- kvm_iommu_put_pages(kvm, slot->base_gfn, gfn);
+ kvm_iommu_put_pages(kvm, slot->base_gfn, gfn - slot->base_gfn);
return r;
}
@@ -273,14 +282,6 @@ out_unlock:
return r;
}
-static void kvm_unpin_pages(struct kvm *kvm, pfn_t pfn, unsigned long npages)
-{
- unsigned long i;
-
- for (i = 0; i < npages; ++i)
- kvm_release_pfn_clean(pfn + i);
-}
-
static void kvm_iommu_put_pages(struct kvm *kvm,
gfn_t base_gfn, unsigned long npages)
{
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 047/131] ALSA: virtuoso: Xonar DSX support
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (47 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 076/131] kvm: iommu: fix the third parameter of kvm_iommu_put_pages (CVE-2014-3601) Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 113/131] sparc64: Fix huge TSB mapping on pre-UltraSPARC-III cpus Ben Hutchings
` (83 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Sergiu Giurgiu, Takashi Iwai
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Sergiu Giurgiu <sgiurgiu11@gmail.com>
commit 4492363251235c4499a2d073c5f09121ea23d39d upstream.
This patch adds support for ASUS - Xonar DSX sound cards. Tested on
openSUSE 12.2 with kernel:
Linux 3.4.6-2.10-desktop #1 SMP PREEMPT Thu Jul 26 09:36:26 UTC 2012 (641c197) x86_64 x86_64 x86_64 GNU/Linux
Works:
- play sounds
- adjust volume on master channel.
- mute .
Since Xonar DS uses the same chip, everything that works for DS should
work for DSX as well.
Signed-off-by: Sergiu Giurgiu <sgiurgiu11@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
sound/pci/oxygen/virtuoso.c | 1 +
sound/pci/oxygen/xonar_wm87x6.c | 6 +++++-
2 files changed, 6 insertions(+), 1 deletion(-)
--- a/sound/pci/oxygen/virtuoso.c
+++ b/sound/pci/oxygen/virtuoso.c
@@ -52,6 +52,7 @@ static DEFINE_PCI_DEVICE_TABLE(xonar_ids
{ OXYGEN_PCI_SUBID(0x1043, 0x835d) },
{ OXYGEN_PCI_SUBID(0x1043, 0x835e) },
{ OXYGEN_PCI_SUBID(0x1043, 0x838e) },
+ { OXYGEN_PCI_SUBID(0x1043, 0x8522) },
{ OXYGEN_PCI_SUBID_BROKEN_EEPROM },
{ }
};
--- a/sound/pci/oxygen/xonar_wm87x6.c
+++ b/sound/pci/oxygen/xonar_wm87x6.c
@@ -1255,7 +1255,6 @@ static void dump_wm87x6_registers(struct
}
static const struct oxygen_model model_xonar_ds = {
- .shortname = "Xonar DS",
.longname = "Asus Virtuoso 66",
.chip = "AV200",
.init = xonar_ds_init,
@@ -1325,6 +1324,11 @@ int __devinit get_xonar_wm87x6_model(str
switch (id->subdevice) {
case 0x838e:
chip->model = model_xonar_ds;
+ chip->model.shortname = "Xonar DS";
+ break;
+ case 0x8522:
+ chip->model = model_xonar_ds;
+ chip->model.shortname = "Xonar DSX";
break;
case 0x835e:
chip->model = model_xonar_hdav_slim;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 113/131] sparc64: Fix huge TSB mapping on pre-UltraSPARC-III cpus.
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (48 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 047/131] ALSA: virtuoso: Xonar DSX support Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 102/131] tcp: Fix integer-overflow in TCP vegas Ben Hutchings
` (82 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, David S. Miller
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "David S. Miller" <davem@davemloft.net>
[ Upstream commit b18eb2d779240631a098626cb6841ee2dd34fda0 ]
Access to the TSB hash tables during TLB misses requires that there be
an atomic 128-bit quad load available so that we fetch a matching TAG
and DATA field at the same time.
On cpus prior to UltraSPARC-III only virtual address based quad loads
are available. UltraSPARC-III and later provide physical address
based variants which are easier to use.
When we only have virtual address based quad loads available this
means that we have to lock the TSB into the TLB at a fixed virtual
address on each cpu when it runs that process. We can't just access
the PAGE_OFFSET based aliased mapping of these TSBs because we cannot
take a recursive TLB miss inside of the TLB miss handler without
risking running out of hardware trap levels (some trap combinations
can be deep, such as those generated by register window spill and fill
traps).
Without huge pages it's working perfectly fine, but when the huge TSB
got added another chunk of fixed virtual address space was not
allocated for this second TSB mapping.
So we were mapping both the 8K and 4MB TSBs to the same exact virtual
address, causing multiple TLB matches which gives undefined behavior.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/sparc/include/asm/pgtable_64.h | 6 ++++--
arch/sparc/mm/tsb.c | 14 +++++++++++++-
2 files changed, 17 insertions(+), 3 deletions(-)
diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
index ddbbea3..7ee5a1c 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -25,7 +25,8 @@
/* The kernel image occupies 0x4000000 to 0x6000000 (4MB --> 96MB).
* The page copy blockops can use 0x6000000 to 0x8000000.
- * The TSB is mapped in the 0x8000000 to 0xa000000 range.
+ * The 8K TSB is mapped in the 0x8000000 to 0x8400000 range.
+ * The 4M TSB is mapped in the 0x8400000 to 0x8800000 range.
* The PROM resides in an area spanning 0xf0000000 to 0x100000000.
* The vmalloc area spans 0x100000000 to 0x200000000.
* Since modules need to be in the lowest 32-bits of the address space,
@@ -34,7 +35,8 @@
* 0x400000000.
*/
#define TLBTEMP_BASE _AC(0x0000000006000000,UL)
-#define TSBMAP_BASE _AC(0x0000000008000000,UL)
+#define TSBMAP_8K_BASE _AC(0x0000000008000000,UL)
+#define TSBMAP_4M_BASE _AC(0x0000000008400000,UL)
#define MODULES_VADDR _AC(0x0000000010000000,UL)
#define MODULES_LEN _AC(0x00000000e0000000,UL)
#define MODULES_END _AC(0x00000000f0000000,UL)
diff --git a/arch/sparc/mm/tsb.c b/arch/sparc/mm/tsb.c
index 3ebcac7..6ddf60b 100644
--- a/arch/sparc/mm/tsb.c
+++ b/arch/sparc/mm/tsb.c
@@ -151,7 +151,19 @@ static void setup_tsb_params(struct mm_struct *mm, unsigned long tsb_idx, unsign
mm->context.tsb_block[tsb_idx].tsb_nentries =
tsb_bytes / sizeof(struct tsb);
- base = TSBMAP_BASE;
+ switch (tsb_idx) {
+ case MM_TSB_BASE:
+ base = TSBMAP_8K_BASE;
+ break;
+#if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE)
+ case MM_TSB_HUGE:
+ base = TSBMAP_4M_BASE;
+ break;
+#endif
+ default:
+ BUG();
+ }
+
tte = pgprot_val(PAGE_KERNEL_LOCKED);
tsb_paddr = __pa(mm->context.tsb_block[tsb_idx].tsb);
BUG_ON(tsb_paddr & (tsb_bytes - 1UL));
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 102/131] tcp: Fix integer-overflow in TCP vegas
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (49 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 113/131] sparc64: Fix huge TSB mapping on pre-UltraSPARC-III cpus Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 056/131] hwmon: (ads1015) Fix out-of-bounds array access Ben Hutchings
` (81 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, David S. Miller, Neal Cardwell, Eric Dumazet, Doug Leith,
David Laight, Stephen Hemminger, Christoph Paasch
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Christoph Paasch <christoph.paasch@uclouvain.be>
[ Upstream commit 1f74e613ded11517db90b2bd57e9464d9e0fb161 ]
In vegas we do a multiplication of the cwnd and the rtt. This
may overflow and thus their result is stored in a u64. However, we first
need to cast the cwnd so that actually 64-bit arithmetic is done.
Then, we need to do do_div to allow this to be used on 32-bit arches.
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David Laight <David.Laight@ACULAB.COM>
Cc: Doug Leith <doug.leith@nuim.ie>
Fixes: 8d3a564da34e (tcp: tcp_vegas cong avoid fix)
Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
net/ipv4/tcp_vegas.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/ipv4/tcp_vegas.c b/net/ipv4/tcp_vegas.c
index 80fa2bf..c042e52 100644
--- a/net/ipv4/tcp_vegas.c
+++ b/net/ipv4/tcp_vegas.c
@@ -218,7 +218,8 @@ static void tcp_vegas_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
* This is:
* (actual rate in segments) * baseRTT
*/
- target_cwnd = tp->snd_cwnd * vegas->baseRTT / rtt;
+ target_cwnd = (u64)tp->snd_cwnd * vegas->baseRTT;
+ do_div(target_cwnd, rtt);
/* Calculate the difference between the window we had,
* and the window we would like to have. This quantity
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 056/131] hwmon: (ads1015) Fix out-of-bounds array access
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (50 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 102/131] tcp: Fix integer-overflow in TCP vegas Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 042/131] ARM: OMAP3: Fix choice of omap3_restore_es function in OMAP34XX rev3.1.2 case Ben Hutchings
` (80 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Axel Lin, Guenter Roeck
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Axel Lin <axel.lin@ingics.com>
commit e981429557cbe10c780fab1c1a237cb832757652 upstream.
Current code uses data_rate as array index in ads1015_read_adc() and uses pga
as array index in ads1015_reg_to_mv, so we must make sure both data_rate and
pga settings are in valid value range.
Return -EINVAL if the setting is out-of-range.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/hwmon/ads1015.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/hwmon/ads1015.c
+++ b/drivers/hwmon/ads1015.c
@@ -200,6 +200,7 @@ static int ads1015_get_channels_config_o
dev_err(&client->dev,
"invalid gain on %s\n",
node->full_name);
+ return -EINVAL;
}
}
@@ -210,6 +211,7 @@ static int ads1015_get_channels_config_o
dev_err(&client->dev,
"invalid data_rate on %s\n",
node->full_name);
+ return -EINVAL;
}
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 042/131] ARM: OMAP3: Fix choice of omap3_restore_es function in OMAP34XX rev3.1.2 case.
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (51 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 056/131] hwmon: (ads1015) Fix out-of-bounds array access Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 062/131] reiserfs: Fix use after free in journal teardown Ben Hutchings
` (79 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Tony Lindgren, Jeremy Vial
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Jeremy Vial <jvial@adeneo-embedded.com>
commit 9b5f7428f8b16bd8980213f2b70baf1dd0b9e36c upstream.
According to the comment “restore_es3: applies to 34xx >= ES3.0" in
"arch/arm/mach-omap2/sleep34xx.S”, omap3_restore_es3 should be used
if the revision of an OMAP34xx is ES3.1.2.
Signed-off-by: Jeremy Vial <jvial@adeneo-embedded.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/arm/mach-omap2/control.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/arch/arm/mach-omap2/control.c
+++ b/arch/arm/mach-omap2/control.c
@@ -282,7 +282,8 @@ void omap3_save_scratchpad_contents(void
scratchpad_contents.public_restore_ptr =
virt_to_phys(omap3_restore_3630);
else if (omap_rev() != OMAP3430_REV_ES3_0 &&
- omap_rev() != OMAP3430_REV_ES3_1)
+ omap_rev() != OMAP3430_REV_ES3_1 &&
+ omap_rev() != OMAP3430_REV_ES3_1_2)
scratchpad_contents.public_restore_ptr =
virt_to_phys(omap3_restore);
else
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 062/131] reiserfs: Fix use after free in journal teardown
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (52 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 042/131] ARM: OMAP3: Fix choice of omap3_restore_es function in OMAP34XX rev3.1.2 case Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 022/131] hpsa: fix bad -ENOMEM return value in hpsa_big_passthru_ioctl Ben Hutchings
` (78 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Jan Kara
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Jan Kara <jack@suse.cz>
commit 01777836c87081e4f68c4a43c9abe6114805f91e upstream.
If do_journal_release() races with do_journal_end() which requeues
delayed works for transaction flushing, we can leave work items for
flushing outstanding transactions queued while freeing them. That
results in use after free and possible crash in run_timers_softirq().
Fix the problem by not requeueing works if superblock is being shut down
(MS_ACTIVE not set) and using cancel_delayed_work_sync() in
do_journal_release().
Signed-off-by: Jan Kara <jack@suse.cz>
[bwh: Backported to 3.2:
- Adjust context
- commit_wq is global, not per-superblock
- Change comment about 'these works'; we only have one work item
- Drop inapplicable changes to reiserfs_schedule_old_flush()]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -1916,15 +1916,19 @@ static int do_journal_release(struct rei
}
reiserfs_mounted_fs_count--;
- /* wait for all commits to finish */
- cancel_delayed_work(&SB_JOURNAL(sb)->j_work);
/*
* We must release the write lock here because
* the workqueue job (flush_async_commit) needs this lock
*/
reiserfs_write_unlock(sb);
- flush_workqueue(commit_wq);
+ /*
+ * Cancel flushing of old commits. Note that this work will not
+ * be requeued because superblock is being shutdown and doesn't
+ * have MS_ACTIVE set.
+ */
+ /* wait for all commits to finish */
+ cancel_delayed_work_sync(&SB_JOURNAL(sb)->j_work);
if (!reiserfs_mounted_fs_count) {
destroy_workqueue(commit_wq);
@@ -4211,8 +4215,15 @@ static int do_journal_end(struct reiserf
if (flush) {
flush_commit_list(sb, jl, 1);
flush_journal_list(sb, jl, 1);
- } else if (!(jl->j_state & LIST_COMMIT_PENDING))
- queue_delayed_work(commit_wq, &journal->j_work, HZ / 10);
+ } else if (!(jl->j_state & LIST_COMMIT_PENDING)) {
+ /*
+ * Avoid queueing work when sb is being shut down. Transaction
+ * will be flushed on journal shutdown.
+ */
+ if (sb->s_flags & MS_ACTIVE)
+ queue_delayed_work(commit_wq,
+ &journal->j_work, HZ / 10);
+ }
/* if the next transaction has any chance of wrapping, flush
** transactions that might get overwritten. If any journal lists are very
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 022/131] hpsa: fix bad -ENOMEM return value in hpsa_big_passthru_ioctl
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (53 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 062/131] reiserfs: Fix use after free in journal teardown Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 121/131] slab/mempolicy: always use local policy from interrupt context Ben Hutchings
` (77 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Scott Teel, Robert Elliott, Stephen M. Cameron, Joe Handzik,
Christoph Hellwig
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "Stephen M. Cameron" <scameron@beardog.cce.hp.com>
commit 0758f4f732b08b6ef07f2e5f735655cf69fea477 upstream.
When copy_from_user fails, return -EFAULT, not -ENOMEM
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Reported-by: Robert Elliott <elliott@hp.com>
Reviewed-by: Joe Handzik <joseph.t.handzik@hp.com>
Reviewed-by: Scott Teel <scott.teel@hp.com>
Reviewed by: Mike MIller <michael.miller@canonical.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/scsi/hpsa.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -2769,7 +2769,7 @@ static int hpsa_big_passthru_ioctl(struc
}
if (ioc->Request.Type.Direction == XFER_WRITE) {
if (copy_from_user(buff[sg_used], data_ptr, sz)) {
- status = -ENOMEM;
+ status = -EFAULT;
goto cleanup1;
}
} else
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 121/131] slab/mempolicy: always use local policy from interrupt context
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (54 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 022/131] hpsa: fix bad -ENOMEM return value in hpsa_big_passthru_ioctl Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 044/131] netlabel: fix a problem when setting bits below the previously lowest bit Ben Hutchings
` (76 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, David Rientjes, penberg, Andi Kleen, David Mackey,
KOSAKI Motohiro, cl, Arun Sharma
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Andi Kleen <ak@linux.intel.com>
commit e7b691b085fda913830e5280ae6f724b2a63c824 upstream.
slab_node() could access current->mempolicy from interrupt context.
However there's a race condition during exit where the mempolicy
is first freed and then the pointer zeroed.
Using this from interrupts seems bogus anyways. The interrupt
will interrupt a random process and therefore get a random
mempolicy. Many times, this will be idle's, which noone can change.
Just disable this here and always use local for slab
from interrupts. I also cleaned up the callers of slab_node a bit
which always passed the same argument.
I believe the original mempolicy code did that in fact,
so it's likely a regression.
v2: send version with correct logic
v3: simplify. fix typo.
Reported-by: Arun Sharma <asharma@fb.com>
Cc: penberg@kernel.org
Cc: cl@linux.com
Signed-off-by: Andi Kleen <ak@linux.intel.com>
[tdmackey@twitter.com: Rework control flow based on feedback from
cl@linux.com, fix logic, and cleanup current task_struct reference]
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Christoph Lameter <cl@linux.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: David Mackey <tdmackey@twitter.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
include/linux/mempolicy.h | 2 +-
mm/mempolicy.c | 8 +++++++-
mm/slab.c | 4 ++--
mm/slub.c | 2 +-
4 files changed, 11 insertions(+), 5 deletions(-)
--- a/include/linux/mempolicy.h
+++ b/include/linux/mempolicy.h
@@ -205,7 +205,7 @@ extern struct zonelist *huge_zonelist(st
extern bool init_nodemask_of_mempolicy(nodemask_t *mask);
extern bool mempolicy_nodemask_intersects(struct task_struct *tsk,
const nodemask_t *mask);
-extern unsigned slab_node(struct mempolicy *policy);
+extern unsigned slab_node(void);
extern enum zone_type policy_zone;
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1601,8 +1601,14 @@ static unsigned interleave_nodes(struct
* task can change it's policy. The system default policy requires no
* such protection.
*/
-unsigned slab_node(struct mempolicy *policy)
+unsigned slab_node(void)
{
+ struct mempolicy *policy;
+
+ if (in_interrupt())
+ return numa_node_id();
+
+ policy = current->mempolicy;
if (!policy || policy->flags & MPOL_F_LOCAL)
return numa_node_id();
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3270,7 +3270,7 @@ static void *alternate_node_alloc(struct
if (cpuset_do_slab_mem_spread() && (cachep->flags & SLAB_MEM_SPREAD))
nid_alloc = cpuset_slab_spread_node();
else if (current->mempolicy)
- nid_alloc = slab_node(current->mempolicy);
+ nid_alloc = slab_node();
if (nid_alloc != nid_here)
return ____cache_alloc_node(cachep, flags, nid_alloc);
return NULL;
@@ -3302,7 +3302,7 @@ static void *fallback_alloc(struct kmem_
retry_cpuset:
cpuset_mems_cookie = get_mems_allowed();
- zonelist = node_zonelist(slab_node(current->mempolicy), flags);
+ zonelist = node_zonelist(slab_node(), flags);
retry:
/*
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1608,7 +1608,7 @@ static struct page *get_any_partial(stru
do {
cpuset_mems_cookie = get_mems_allowed();
- zonelist = node_zonelist(slab_node(current->mempolicy), flags);
+ zonelist = node_zonelist(slab_node(), flags);
for_each_zone_zonelist(zone, z, zonelist, high_zoneidx) {
struct kmem_cache_node *n;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 044/131] netlabel: fix a problem when setting bits below the previously lowest bit
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (55 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 121/131] slab/mempolicy: always use local policy from interrupt context Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 038/131] hwmon: (amc6821) Fix possible race condition bug Ben Hutchings
` (75 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Christian Evans, Paul Moore, Casey Schaufler
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Paul Moore <pmoore@redhat.com>
commit 41c3bd2039e0d7b3dc32313141773f20716ec524 upstream.
The NetLabel category (catmap) functions have a problem in that they
assume categories will be set in an increasing manner, e.g. the next
category set will always be larger than the last. Unfortunately, this
is not a valid assumption and could result in problems when attempting
to set categories less than the startbit in the lowest catmap node.
In some cases kernel panics and other nasties can result.
This patch corrects the problem by checking for this and allocating a
new catmap node instance and placing it at the front of the list.
Reported-by: Christian Evans <frodox@zoho.com>
Signed-off-by: Paul Moore <pmoore@redhat.com>
Tested-by: Casey Schaufler <casey@schaufler-ca.com>
[bwh: Backported to 3.2: adjust filename for SMACK]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
include/net/netlabel.h | 8 ++++----
net/ipv4/cipso_ipv4.c | 6 +++---
net/netlabel/netlabel_kapi.c | 26 ++++++++++++++++++--------
security/smack/smack_lsm.c | 2 +-
4 files changed, 26 insertions(+), 16 deletions(-)
--- a/include/net/netlabel.h
+++ b/include/net/netlabel.h
@@ -395,10 +395,10 @@ int netlbl_secattr_catmap_walk(struct ne
u32 offset);
int netlbl_secattr_catmap_walk_rng(struct netlbl_lsm_secattr_catmap *catmap,
u32 offset);
-int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap *catmap,
+int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap **catmap,
u32 bit,
gfp_t flags);
-int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap *catmap,
+int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap **catmap,
u32 start,
u32 end,
gfp_t flags);
@@ -506,14 +506,14 @@ static inline int netlbl_secattr_catmap_
return -ENOENT;
}
static inline int netlbl_secattr_catmap_setbit(
- struct netlbl_lsm_secattr_catmap *catmap,
+ struct netlbl_lsm_secattr_catmap **catmap,
u32 bit,
gfp_t flags)
{
return 0;
}
static inline int netlbl_secattr_catmap_setrng(
- struct netlbl_lsm_secattr_catmap *catmap,
+ struct netlbl_lsm_secattr_catmap **catmap,
u32 start,
u32 end,
gfp_t flags)
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -974,7 +974,7 @@ static int cipso_v4_map_cat_rbm_ntoh(con
return -EPERM;
break;
}
- ret_val = netlbl_secattr_catmap_setbit(secattr->attr.mls.cat,
+ ret_val = netlbl_secattr_catmap_setbit(&secattr->attr.mls.cat,
host_spot,
GFP_ATOMIC);
if (ret_val != 0)
@@ -1076,7 +1076,7 @@ static int cipso_v4_map_cat_enum_ntoh(co
u32 iter;
for (iter = 0; iter < net_cat_len; iter += 2) {
- ret_val = netlbl_secattr_catmap_setbit(secattr->attr.mls.cat,
+ ret_val = netlbl_secattr_catmap_setbit(&secattr->attr.mls.cat,
get_unaligned_be16(&net_cat[iter]),
GFP_ATOMIC);
if (ret_val != 0)
@@ -1218,7 +1218,7 @@ static int cipso_v4_map_cat_rng_ntoh(con
else
cat_low = 0;
- ret_val = netlbl_secattr_catmap_setrng(secattr->attr.mls.cat,
+ ret_val = netlbl_secattr_catmap_setrng(&secattr->attr.mls.cat,
cat_low,
cat_high,
GFP_ATOMIC);
--- a/net/netlabel/netlabel_kapi.c
+++ b/net/netlabel/netlabel_kapi.c
@@ -523,7 +523,7 @@ int netlbl_secattr_catmap_walk_rng(struc
/**
* netlbl_secattr_catmap_setbit - Set a bit in a LSM secattr catmap
- * @catmap: the category bitmap
+ * @catmap: pointer to the category bitmap
* @bit: the bit to set
* @flags: memory allocation flags
*
@@ -532,18 +532,25 @@ int netlbl_secattr_catmap_walk_rng(struc
* negative values on failure.
*
*/
-int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap *catmap,
+int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap **catmap,
u32 bit,
gfp_t flags)
{
- struct netlbl_lsm_secattr_catmap *iter = catmap;
+ struct netlbl_lsm_secattr_catmap *iter = *catmap;
u32 node_bit;
u32 node_idx;
while (iter->next != NULL &&
bit >= (iter->startbit + NETLBL_CATMAP_SIZE))
iter = iter->next;
- if (bit >= (iter->startbit + NETLBL_CATMAP_SIZE)) {
+ if (bit < iter->startbit) {
+ iter = netlbl_secattr_catmap_alloc(flags);
+ if (iter == NULL)
+ return -ENOMEM;
+ iter->next = *catmap;
+ iter->startbit = bit & ~(NETLBL_CATMAP_SIZE - 1);
+ *catmap = iter;
+ } else if (bit >= (iter->startbit + NETLBL_CATMAP_SIZE)) {
iter->next = netlbl_secattr_catmap_alloc(flags);
if (iter->next == NULL)
return -ENOMEM;
@@ -561,7 +568,7 @@ int netlbl_secattr_catmap_setbit(struct
/**
* netlbl_secattr_catmap_setrng - Set a range of bits in a LSM secattr catmap
- * @catmap: the category bitmap
+ * @catmap: pointer to the category bitmap
* @start: the starting bit
* @end: the last bit in the string
* @flags: memory allocation flags
@@ -571,15 +578,16 @@ int netlbl_secattr_catmap_setbit(struct
* on success, negative values on failure.
*
*/
-int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap *catmap,
+int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap **catmap,
u32 start,
u32 end,
gfp_t flags)
{
int ret_val = 0;
- struct netlbl_lsm_secattr_catmap *iter = catmap;
+ struct netlbl_lsm_secattr_catmap *iter = *catmap;
u32 iter_max_spot;
u32 spot;
+ u32 orig_spot = iter->startbit;
/* XXX - This could probably be made a bit faster by combining writes
* to the catmap instead of setting a single bit each time, but for
@@ -597,7 +605,9 @@ int netlbl_secattr_catmap_setrng(struct
iter = iter->next;
iter_max_spot = iter->startbit + NETLBL_CATMAP_SIZE;
}
- ret_val = netlbl_secattr_catmap_setbit(iter, spot, flags);
+ ret_val = netlbl_secattr_catmap_setbit(&iter, spot, flags);
+ if (iter->startbit < orig_spot)
+ *catmap = iter;
}
return ret_val;
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -1842,7 +1842,7 @@ static void smack_set_catset(char *catse
for (m = 0x80; m != 0; m >>= 1, cat++) {
if ((m & *cp) == 0)
continue;
- rc = netlbl_secattr_catmap_setbit(sap->attr.mls.cat,
+ rc = netlbl_secattr_catmap_setbit(&sap->attr.mls.cat,
cat, GFP_ATOMIC);
}
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 038/131] hwmon: (amc6821) Fix possible race condition bug
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (56 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 044/131] netlabel: fix a problem when setting bits below the previously lowest bit Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 057/131] s390/locking: Reenable optimistic spinning Ben Hutchings
` (74 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Guenter Roeck, Axel Lin
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Axel Lin <axel.lin@ingics.com>
commit cf44819c98db11163f58f08b822d626c7a8f5188 upstream.
Ensure mutex lock protects the read-modify-write period to prevent possible
race condition bug.
In additional, update data->valid should also be protected by the mutex lock.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/hwmon/amc6821.c | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
--- a/drivers/hwmon/amc6821.c
+++ b/drivers/hwmon/amc6821.c
@@ -360,11 +360,13 @@ static ssize_t set_pwm1_enable(
if (config)
return config;
+ mutex_lock(&data->update_lock);
config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF1);
if (config < 0) {
dev_err(&client->dev,
"Error reading configuration register, aborting.\n");
- return config;
+ count = config;
+ goto unlock;
}
switch (val) {
@@ -381,14 +383,15 @@ static ssize_t set_pwm1_enable(
config |= AMC6821_CONF1_FDRC1;
break;
default:
- return -EINVAL;
+ count = -EINVAL;
+ goto unlock;
}
- mutex_lock(&data->update_lock);
if (i2c_smbus_write_byte_data(client, AMC6821_REG_CONF1, config)) {
dev_err(&client->dev,
"Configuration register write error, aborting.\n");
count = -EIO;
}
+unlock:
mutex_unlock(&data->update_lock);
return count;
}
@@ -495,8 +498,9 @@ static ssize_t set_temp_auto_point_temp(
return -EINVAL;
}
- data->valid = 0;
mutex_lock(&data->update_lock);
+ data->valid = 0;
+
switch (ix) {
case 0:
ptemp[0] = SENSORS_LIMIT(val / 1000, 0,
@@ -669,13 +673,14 @@ static ssize_t set_fan1_div(
if (config)
return config;
+ mutex_lock(&data->update_lock);
config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF4);
if (config < 0) {
dev_err(&client->dev,
"Error reading configuration register, aborting.\n");
- return config;
+ count = config;
+ goto EXIT;
}
- mutex_lock(&data->update_lock);
switch (val) {
case 2:
config &= ~AMC6821_CONF4_PSPR;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 057/131] s390/locking: Reenable optimistic spinning
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (57 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 038/131] hwmon: (amc6821) Fix possible race condition bug Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 050/131] hwmon: (sis5595) Prevent overflow problem when writing large limits Ben Hutchings
` (73 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Heiko Carstens, Peter Zijlstra, Christian Borntraeger,
Martin Schwidefsky, Ingo Molnar
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Christian Borntraeger <borntraeger@de.ibm.com>
commit 36e7fdaa1a04fcf65b864232e1af56a51c7814d6 upstream.
commit 4badad352a6bb202ec68afa7a574c0bb961e5ebc (locking/mutex: Disable
optimistic spinning on some architectures) fenced spinning for
architectures without proper cmpxchg.
There is no need to disable mutex spinning on s390, though:
The instructions CS,CSG and friends provide the proper guarantees.
(We dont implement cmpxchg with locks).
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/s390/Kconfig | 1 +
1 file changed, 1 insertion(+)
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -119,6 +119,7 @@ config S390
select ARCH_INLINE_WRITE_UNLOCK_BH
select ARCH_INLINE_WRITE_UNLOCK_IRQ
select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
+ select ARCH_SUPPORTS_ATOMIC_RMW
config SCHED_OMIT_FRAME_POINTER
def_bool y
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 050/131] hwmon: (sis5595) Prevent overflow problem when writing large limits
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (58 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 057/131] s390/locking: Reenable optimistic spinning Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 051/131] drm/ttm: Fix possible stack overflow by recursive shrinker calls Ben Hutchings
` (72 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Guenter Roeck, Axel Lin
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Axel Lin <axel.lin@ingics.com>
commit cc336546ddca8c22de83720632431c16a5f9fe9a upstream.
On platforms with sizeof(int) < sizeof(long), writing a temperature
limit larger than MAXINT will result in unpredictable limit values
written to the chip. Avoid auto-conversion from long to int to fix
the problem.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/hwmon/sis5595.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/hwmon/sis5595.c
+++ b/drivers/hwmon/sis5595.c
@@ -149,7 +149,7 @@ static inline int TEMP_FROM_REG(s8 val)
{
return val * 830 + 52120;
}
-static inline s8 TEMP_TO_REG(int val)
+static inline s8 TEMP_TO_REG(long val)
{
int nval = SENSORS_LIMIT(val, -54120, 157530) ;
return nval<0 ? (nval-5212-415)/830 : (nval-5212+415)/830;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 051/131] drm/ttm: Fix possible stack overflow by recursive shrinker calls.
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (59 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 050/131] hwmon: (sis5595) Prevent overflow problem when writing large limits Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 099/131] inetpeer: get rid of ip_id_count Ben Hutchings
` (71 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Tetsuo Handa, Dave Airlie
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
commit 71336e011d1d2312bcbcaa8fcec7365024f3a95d upstream.
While ttm_dma_pool_shrink_scan() tries to take mutex before doing GFP_KERNEL
allocation, ttm_pool_shrink_scan() does not do it. This can result in stack
overflow if kmalloc() in ttm_page_pool_free() triggered recursion due to
memory pressure.
shrink_slab()
=> ttm_pool_shrink_scan()
=> ttm_page_pool_free()
=> kmalloc(GFP_KERNEL)
=> shrink_slab()
=> ttm_pool_shrink_scan()
=> ttm_page_pool_free()
=> kmalloc(GFP_KERNEL)
Change ttm_pool_shrink_scan() to do like ttm_dma_pool_shrink_scan() does.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Dave Airlie <airlied@redhat.com>
[bwh: Backported to 3.2:
- Adjust context
- Change return value in the contended case to follow the old shrinker
API]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
--- a/drivers/gpu/drm/ttm/ttm_page_alloc.c
+++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c
@@ -398,13 +398,18 @@ static int ttm_pool_get_num_unused_pages
static int ttm_pool_mm_shrink(struct shrinker *shrink,
struct shrink_control *sc)
{
- static atomic_t start_pool = ATOMIC_INIT(0);
+ static DEFINE_MUTEX(lock);
+ static unsigned start_pool;
unsigned i;
- unsigned pool_offset = atomic_add_return(1, &start_pool);
+ unsigned pool_offset;
struct ttm_page_pool *pool;
int shrink_pages = sc->nr_to_scan;
- pool_offset = pool_offset % NUM_POOLS;
+ if (shrink_pages == 0)
+ goto out;
+ if (!mutex_trylock(&lock))
+ return -1;
+ pool_offset = ++start_pool % NUM_POOLS;
/* select start pool in round robin fashion */
for (i = 0; i < NUM_POOLS; ++i) {
unsigned nr_free = shrink_pages;
@@ -413,6 +418,8 @@ static int ttm_pool_mm_shrink(struct shr
pool = &_manager->pools[(i + pool_offset)%NUM_POOLS];
shrink_pages = ttm_page_pool_free(pool, nr_free);
}
+ mutex_unlock(&lock);
+out:
/* return estimated number of unused pages in pool */
return ttm_pool_get_num_unused_pages();
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 099/131] inetpeer: get rid of ip_id_count
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (60 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 051/131] drm/ttm: Fix possible stack overflow by recursive shrinker calls Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 122/131] sparc: use asm-generic version of types.h Ben Hutchings
` (70 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Eric Dumazet, David S. Miller
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
[ Upstream commit 73f156a6e8c1074ac6327e0abd1169e95eb66463 ]
Ideally, we would need to generate IP ID using a per destination IP
generator.
linux kernels used inet_peer cache for this purpose, but this had a huge
cost on servers disabling MTU discovery.
1) each inet_peer struct consumes 192 bytes
2) inetpeer cache uses a binary tree of inet_peer structs,
with a nominal size of ~66000 elements under load.
3) lookups in this tree are hitting a lot of cache lines, as tree depth
is about 20.
4) If server deals with many tcp flows, we have a high probability of
not finding the inet_peer, allocating a fresh one, inserting it in
the tree with same initial ip_id_count, (cf secure_ip_id())
5) We garbage collect inet_peer aggressively.
IP ID generation do not have to be 'perfect'
Goal is trying to avoid duplicates in a short period of time,
so that reassembly units have a chance to complete reassembly of
fragments belonging to one message before receiving other fragments
with a recycled ID.
We simply use an array of generators, and a Jenkin hash using the dst IP
as a key.
ipv6_select_ident() is put back into net/ipv6/ip6_output.c where it
belongs (it is only used from this file)
secure_ip_id() and secure_ipv6_id() no longer are needed.
Rename ip_select_ident_more() to ip_select_ident_segs() to avoid
unnecessary decrement/increment of the number of segments.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/net/ppp/pptp.c | 2 +-
include/net/inetpeer.h | 14 ++---------
include/net/ip.h | 40 ++++++++++++++++-------------
include/net/ipip.h | 2 +-
include/net/ipv6.h | 9 +++++--
include/net/secure_seq.h | 2 --
net/core/secure_seq.c | 23 -----------------
net/ipv4/igmp.c | 4 +--
net/ipv4/inetpeer.c | 18 -------------
net/ipv4/ip_output.c | 7 +++---
net/ipv4/ipmr.c | 2 +-
net/ipv4/raw.c | 2 +-
net/ipv4/route.c | 56 ++++++++++++++---------------------------
net/ipv4/xfrm4_mode_tunnel.c | 2 +-
net/ipv6/ip6_output.c | 23 +++++++----------
net/netfilter/ipvs/ip_vs_xmit.c | 2 +-
16 files changed, 71 insertions(+), 137 deletions(-)
diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c
index 2b349d3..c974581 100644
--- a/drivers/net/ppp/pptp.c
+++ b/drivers/net/ppp/pptp.c
@@ -281,7 +281,7 @@ static int pptp_xmit(struct ppp_channel *chan, struct sk_buff *skb)
nf_reset(skb);
skb->ip_summed = CHECKSUM_NONE;
- ip_select_ident(skb, &rt->dst, NULL);
+ ip_select_ident(skb, NULL);
ip_send_check(iph);
ip_local_out(skb);
diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h
index ba0ddb0..6172a44 100644
--- a/include/net/inetpeer.h
+++ b/include/net/inetpeer.h
@@ -47,13 +47,12 @@ struct inet_peer {
};
/*
* Once inet_peer is queued for deletion (refcnt == -1), following fields
- * are not available: rid, ip_id_count, tcp_ts, tcp_ts_stamp
+ * are not available: rid, tcp_ts, tcp_ts_stamp
* We can share memory with rcu_head to help keep inet_peer small.
*/
union {
struct {
atomic_t rid; /* Frag reception counter */
- atomic_t ip_id_count; /* IP ID for the next packet */
__u32 tcp_ts;
__u32 tcp_ts_stamp;
};
@@ -103,7 +102,7 @@ extern bool inet_peer_xrlim_allow(struct inet_peer *peer, int timeout);
extern void inetpeer_invalidate_tree(int family);
/*
- * temporary check to make sure we dont access rid, ip_id_count, tcp_ts,
+ * temporary check to make sure we dont access rid, tcp_ts,
* tcp_ts_stamp if no refcount is taken on inet_peer
*/
static inline void inet_peer_refcheck(const struct inet_peer *p)
@@ -111,13 +110,4 @@ static inline void inet_peer_refcheck(const struct inet_peer *p)
WARN_ON_ONCE(atomic_read(&p->refcnt) <= 0);
}
-
-/* can be called with or without local BH being disabled */
-static inline int inet_getid(struct inet_peer *p, int more)
-{
- more++;
- inet_peer_refcheck(p);
- return atomic_add_return(more, &p->ip_id_count) - more;
-}
-
#endif /* _NET_INETPEER_H */
diff --git a/include/net/ip.h b/include/net/ip.h
index b935e6c..f4ccdd6 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -264,9 +264,19 @@ int ip_dont_fragment(struct sock *sk, struct dst_entry *dst)
!(dst_metric_locked(dst, RTAX_MTU)));
}
-extern void __ip_select_ident(struct iphdr *iph, struct dst_entry *dst, int more);
+#define IP_IDENTS_SZ 2048u
+extern atomic_t *ip_idents;
-static inline void ip_select_ident(struct sk_buff *skb, struct dst_entry *dst, struct sock *sk)
+static inline u32 ip_idents_reserve(u32 hash, int segs)
+{
+ atomic_t *id_ptr = ip_idents + hash % IP_IDENTS_SZ;
+
+ return atomic_add_return(segs, id_ptr) - segs;
+}
+
+void __ip_select_ident(struct iphdr *iph, int segs);
+
+static inline void ip_select_ident_segs(struct sk_buff *skb, struct sock *sk, int segs)
{
struct iphdr *iph = ip_hdr(skb);
@@ -276,24 +286,20 @@ static inline void ip_select_ident(struct sk_buff *skb, struct dst_entry *dst, s
* does not change, they drop every other packet in
* a TCP stream using header compression.
*/
- iph->id = (sk && inet_sk(sk)->inet_daddr) ?
- htons(inet_sk(sk)->inet_id++) : 0;
- } else
- __ip_select_ident(iph, dst, 0);
-}
-
-static inline void ip_select_ident_more(struct sk_buff *skb, struct dst_entry *dst, struct sock *sk, int more)
-{
- struct iphdr *iph = ip_hdr(skb);
-
- if ((iph->frag_off & htons(IP_DF)) && !skb->local_df) {
if (sk && inet_sk(sk)->inet_daddr) {
iph->id = htons(inet_sk(sk)->inet_id);
- inet_sk(sk)->inet_id += 1 + more;
- } else
+ inet_sk(sk)->inet_id += segs;
+ } else {
iph->id = 0;
- } else
- __ip_select_ident(iph, dst, more);
+ }
+ } else {
+ __ip_select_ident(iph, segs);
+ }
+}
+
+static inline void ip_select_ident(struct sk_buff *skb, struct sock *sk)
+{
+ ip_select_ident_segs(skb, sk, 1);
}
/*
diff --git a/include/net/ipip.h b/include/net/ipip.h
index 4dccfe3..e8ee3bb 100644
--- a/include/net/ipip.h
+++ b/include/net/ipip.h
@@ -50,7 +50,7 @@ struct ip_tunnel_prl_entry {
int pkt_len = skb->len - skb_transport_offset(skb); \
\
skb->ip_summed = CHECKSUM_NONE; \
- ip_select_ident(skb, &rt->dst, NULL); \
+ ip_select_ident(skb, NULL); \
\
err = ip_local_out(skb); \
if (likely(net_xmit_eval(err) == 0)) { \
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 0580673..00a2eb6 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -388,14 +388,19 @@ void ip6_frag_init(struct inet_frag_queue *q, void *a);
int ip6_frag_match(struct inet_frag_queue *q, void *a);
/* more secured version of ipv6_addr_hash() */
-static inline u32 ipv6_addr_jhash(const struct in6_addr *a)
+static inline u32 __ipv6_addr_jhash(const struct in6_addr *a, const u32 initval)
{
u32 v = (__force u32)a->s6_addr32[0] ^ (__force u32)a->s6_addr32[1];
return jhash_3words(v,
(__force u32)a->s6_addr32[2],
(__force u32)a->s6_addr32[3],
- ipv6_hash_secret);
+ initval);
+}
+
+static inline u32 ipv6_addr_jhash(const struct in6_addr *a)
+{
+ return __ipv6_addr_jhash(a, ipv6_hash_secret);
}
static inline int ipv6_addr_any(const struct in6_addr *a)
diff --git a/include/net/secure_seq.h b/include/net/secure_seq.h
index c2e542b..b1c3d1c 100644
--- a/include/net/secure_seq.h
+++ b/include/net/secure_seq.h
@@ -3,8 +3,6 @@
#include <linux/types.h>
-extern __u32 secure_ip_id(__be32 daddr);
-extern __u32 secure_ipv6_id(const __be32 daddr[4]);
extern u32 secure_ipv4_port_ephemeral(__be32 saddr, __be32 daddr, __be16 dport);
extern u32 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr,
__be16 dport);
diff --git a/net/core/secure_seq.c b/net/core/secure_seq.c
index 925991a..fd53919 100644
--- a/net/core/secure_seq.c
+++ b/net/core/secure_seq.c
@@ -79,29 +79,6 @@ u32 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr,
#endif
#ifdef CONFIG_INET
-__u32 secure_ip_id(__be32 daddr)
-{
- u32 hash[MD5_DIGEST_WORDS];
-
- hash[0] = (__force __u32) daddr;
- hash[1] = net_secret[13];
- hash[2] = net_secret[14];
- hash[3] = net_secret[15];
-
- md5_transform(hash, net_secret);
-
- return hash[0];
-}
-
-__u32 secure_ipv6_id(const __be32 daddr[4])
-{
- __u32 hash[4];
-
- memcpy(hash, daddr, 16);
- md5_transform(hash, net_secret);
-
- return hash[0];
-}
__u32 secure_tcp_sequence_number(__be32 saddr, __be32 daddr,
__be16 sport, __be16 dport)
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 7f7e670..7fe66d9 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -342,7 +342,7 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size)
pip->saddr = fl4.saddr;
pip->protocol = IPPROTO_IGMP;
pip->tot_len = 0; /* filled in later */
- ip_select_ident(skb, &rt->dst, NULL);
+ ip_select_ident(skb, NULL);
((u8*)&pip[1])[0] = IPOPT_RA;
((u8*)&pip[1])[1] = 4;
((u8*)&pip[1])[2] = 0;
@@ -683,7 +683,7 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc,
iph->daddr = dst;
iph->saddr = fl4.saddr;
iph->protocol = IPPROTO_IGMP;
- ip_select_ident(skb, &rt->dst, NULL);
+ ip_select_ident(skb, NULL);
((u8*)&iph[1])[0] = IPOPT_RA;
((u8*)&iph[1])[1] = 4;
((u8*)&iph[1])[2] = 0;
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index 58c4e696..9d74cc7 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -26,20 +26,7 @@
* Theory of operations.
* We keep one entry for each peer IP address. The nodes contains long-living
* information about the peer which doesn't depend on routes.
- * At this moment this information consists only of ID field for the next
- * outgoing IP packet. This field is incremented with each packet as encoded
- * in inet_getid() function (include/net/inetpeer.h).
- * At the moment of writing this notes identifier of IP packets is generated
- * to be unpredictable using this code only for packets subjected
- * (actually or potentially) to defragmentation. I.e. DF packets less than
- * PMTU in size when local fragmentation is disabled use a constant ID and do
- * not use this code (see ip_select_ident() in include/net/ip.h).
*
- * Route cache entries hold references to our nodes.
- * New cache entries get references via lookup by destination IP address in
- * the avl tree. The reference is grabbed only when it's needed i.e. only
- * when we try to output IP packet which needs an unpredictable ID (see
- * __ip_select_ident() in net/ipv4/route.c).
* Nodes are removed only when reference counter goes to 0.
* When it's happened the node may be removed when a sufficient amount of
* time has been passed since its last use. The less-recently-used entry can
@@ -62,7 +49,6 @@
* refcnt: atomically against modifications on other CPU;
* usually under some other lock to prevent node disappearing
* daddr: unchangeable
- * ip_id_count: atomic value (no lock needed)
*/
static struct kmem_cache *peer_cachep __read_mostly;
@@ -488,10 +474,6 @@ relookup:
p->daddr = *daddr;
atomic_set(&p->refcnt, 1);
atomic_set(&p->rid, 0);
- atomic_set(&p->ip_id_count,
- (daddr->family == AF_INET) ?
- secure_ip_id(daddr->addr.a4) :
- secure_ipv6_id(daddr->addr.a6));
p->tcp_ts_stamp = 0;
p->metrics[RTAX_LOCK-1] = INETPEER_METRICS_NEW;
p->rate_tokens = 0;
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 16191f0..223085f 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -162,7 +162,7 @@ int ip_build_and_send_pkt(struct sk_buff *skb, struct sock *sk,
iph->daddr = (opt && opt->opt.srr ? opt->opt.faddr : daddr);
iph->saddr = saddr;
iph->protocol = sk->sk_protocol;
- ip_select_ident(skb, &rt->dst, sk);
+ ip_select_ident(skb, sk);
if (opt && opt->opt.optlen) {
iph->ihl += opt->opt.optlen>>2;
@@ -390,8 +390,7 @@ packet_routed:
ip_options_build(skb, &inet_opt->opt, inet->inet_daddr, rt, 0);
}
- ip_select_ident_more(skb, &rt->dst, sk,
- (skb_shinfo(skb)->gso_segs ?: 1) - 1);
+ ip_select_ident_segs(skb, sk, skb_shinfo(skb)->gso_segs ?: 1);
skb->priority = sk->sk_priority;
skb->mark = sk->sk_mark;
@@ -1334,7 +1333,7 @@ struct sk_buff *__ip_make_skb(struct sock *sk,
iph->ihl = 5;
iph->tos = inet->tos;
iph->frag_off = df;
- ip_select_ident(skb, &rt->dst, sk);
+ ip_select_ident(skb, sk);
iph->ttl = ttl;
iph->protocol = sk->sk_protocol;
iph->saddr = fl4->saddr;
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 140d377..7993d16 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -1579,7 +1579,7 @@ static void ip_encap(struct sk_buff *skb, __be32 saddr, __be32 daddr)
iph->protocol = IPPROTO_IPIP;
iph->ihl = 5;
iph->tot_len = htons(skb->len);
- ip_select_ident(skb, skb_dst(skb), NULL);
+ ip_select_ident(skb, NULL);
ip_send_check(iph);
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index cfded93..75fea1f 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -380,7 +380,7 @@ static int raw_send_hdrinc(struct sock *sk, struct flowi4 *fl4,
iph->check = 0;
iph->tot_len = htons(length);
if (!iph->id)
- ip_select_ident(skb, &rt->dst, NULL);
+ ip_select_ident(skb, NULL);
iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
}
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 6526110..278784e 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1344,46 +1344,23 @@ void rt_bind_peer(struct rtable *rt, __be32 daddr, int create)
rt->rt_peer_genid = rt_peer_genid();
}
-/*
- * Peer allocation may fail only in serious out-of-memory conditions. However
- * we still can generate some output.
- * Random ID selection looks a bit dangerous because we have no chances to
- * select ID being unique in a reasonable period of time.
- * But broken packet identifier may be better than no packet at all.
- */
-static void ip_select_fb_ident(struct iphdr *iph)
-{
- static DEFINE_SPINLOCK(ip_fb_id_lock);
- static u32 ip_fallback_id;
- u32 salt;
+atomic_t *ip_idents __read_mostly;
+EXPORT_SYMBOL(ip_idents);
- spin_lock_bh(&ip_fb_id_lock);
- salt = secure_ip_id((__force __be32)ip_fallback_id ^ iph->daddr);
- iph->id = htons(salt & 0xFFFF);
- ip_fallback_id = salt;
- spin_unlock_bh(&ip_fb_id_lock);
-}
-
-void __ip_select_ident(struct iphdr *iph, struct dst_entry *dst, int more)
+void __ip_select_ident(struct iphdr *iph, int segs)
{
- struct rtable *rt = (struct rtable *) dst;
+ static u32 ip_idents_hashrnd __read_mostly;
+ static bool hashrnd_initialized = false;
+ u32 hash, id;
- if (rt && !(rt->dst.flags & DST_NOPEER)) {
- if (rt->peer == NULL)
- rt_bind_peer(rt, rt->rt_dst, 1);
-
- /* If peer is attached to destination, it is never detached,
- so that we need not to grab a lock to dereference it.
- */
- if (rt->peer) {
- iph->id = htons(inet_getid(rt->peer, more));
- return;
- }
- } else if (!rt)
- printk(KERN_DEBUG "rt_bind_peer(0) @%p\n",
- __builtin_return_address(0));
+ if (unlikely(!hashrnd_initialized)) {
+ hashrnd_initialized = true;
+ get_random_bytes(&ip_idents_hashrnd, sizeof(ip_idents_hashrnd));
+ }
- ip_select_fb_ident(iph);
+ hash = jhash_1word((__force u32)iph->daddr, ip_idents_hashrnd);
+ id = ip_idents_reserve(hash, segs);
+ iph->id = htons(id);
}
EXPORT_SYMBOL(__ip_select_ident);
@@ -3023,7 +3000,6 @@ static int rt_fill_info(struct net *net,
error = rt->dst.error;
if (peer) {
inet_peer_refcheck(rt->peer);
- id = atomic_read(&peer->ip_id_count) & 0xffff;
if (peer->tcp_ts_stamp) {
ts = peer->tcp_ts;
tsage = get_seconds() - peer->tcp_ts_stamp;
@@ -3455,6 +3431,12 @@ int __init ip_rt_init(void)
{
int rc = 0;
+ ip_idents = kmalloc(IP_IDENTS_SZ * sizeof(*ip_idents), GFP_KERNEL);
+ if (!ip_idents)
+ panic("IP: failed to allocate ip_idents\n");
+
+ get_random_bytes(ip_idents, IP_IDENTS_SZ * sizeof(*ip_idents));
+
#ifdef CONFIG_IP_ROUTE_CLASSID
ip_rt_acct = __alloc_percpu(256 * sizeof(struct ip_rt_acct), __alignof__(struct ip_rt_acct));
if (!ip_rt_acct)
diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c
index 938553e..5531eb2 100644
--- a/net/ipv4/xfrm4_mode_tunnel.c
+++ b/net/ipv4/xfrm4_mode_tunnel.c
@@ -54,12 +54,12 @@ static int xfrm4_mode_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
top_iph->frag_off = (flags & XFRM_STATE_NOPMTUDISC) ?
0 : (XFRM_MODE_SKB_CB(skb)->frag_off & htons(IP_DF));
- ip_select_ident(skb, dst->child, NULL);
top_iph->ttl = ip4_dst_hoplimit(dst->child);
top_iph->saddr = x->props.saddr.a4;
top_iph->daddr = x->id.daddr.a4;
+ ip_select_ident(skb, NULL);
return 0;
}
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 064b5c9..f79defc 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -600,22 +600,17 @@ int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt)
{
- static atomic_t ipv6_fragmentation_id;
- int ident;
+ static u32 ip6_idents_hashrnd __read_mostly;
+ static bool hashrnd_initialized = false;
+ u32 hash, id;
- if (rt && !(rt->dst.flags & DST_NOPEER)) {
- struct inet_peer *peer;
-
- if (!rt->rt6i_peer)
- rt6_bind_peer(rt, 1);
- peer = rt->rt6i_peer;
- if (peer) {
- fhdr->identification = htonl(inet_getid(peer, 0));
- return;
- }
+ if (unlikely(!hashrnd_initialized)) {
+ hashrnd_initialized = true;
+ get_random_bytes(&ip6_idents_hashrnd, sizeof(ip6_idents_hashrnd));
}
- ident = atomic_inc_return(&ipv6_fragmentation_id);
- fhdr->identification = htonl(ident);
+ hash = __ipv6_addr_jhash(&rt->rt6i_dst.addr, ip6_idents_hashrnd);
+ id = ip_idents_reserve(hash, 1);
+ fhdr->identification = htonl(id);
}
int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index 38c0813..cc8f8b4 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -853,7 +853,7 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
iph->daddr = cp->daddr.ip;
iph->saddr = saddr;
iph->ttl = old_iph->ttl;
- ip_select_ident(skb, &rt->dst, NULL);
+ ip_select_ident(skb, NULL);
/* Another hack: avoid icmp_send in ip_fragment */
skb->local_df = 1;
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 122/131] sparc: use asm-generic version of types.h
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (61 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 099/131] inetpeer: get rid of ip_id_count Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 086/131] ACPI / EC: Add support to disallow QR_EC to be issued when SCI_EVT isn't set Ben Hutchings
` (69 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Sam Ravnborg, Guenter Roeck, David S. Miller
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Sam Ravnborg <sam@ravnborg.org>
commit cbf1ef6b3345d2cc7e62407eec6a6f72a8b1346f upstream.
In sparc headers we use the following pattern:
#if defined(__sparc__) && defined(__arch64__)
sparc64 specific stuff
#else
sparc32 specific stuff
#endif
In types.h this pattern was not followed and here
we only checked for __sparc__ for no good reason.
It was a left-over from long time ago.
I checked other architectures - and most of them
do not have any such checks. And all the recently
merged versions uses the asm-generic version.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
[bwh: Guenter backported this to 3.2:
- Adjusted filenames, context
- There's no duplicate export of types.h to delete]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
--- a/arch/sparc/include/asm/Kbuild
+++ b/arch/sparc/include/asm/Kbuild
@@ -21,3 +21,4 @@ generic-y += div64.h
generic-y += local64.h
generic-y += irq_regs.h
generic-y += local.h
+generic-y += types.h
--- a/arch/sparc/include/asm/types.h
+++ /dev/null
@@ -1,23 +0,0 @@
-#ifndef _SPARC_TYPES_H
-#define _SPARC_TYPES_H
-/*
- * This file is never included by application software unless
- * explicitly requested (e.g., via linux/types.h) in which case the
- * application is Linux specific so (user-) name space pollution is
- * not a major issue. However, for interoperability, libraries still
- * need to be careful to avoid a name clashes.
- */
-
-#if defined(__sparc__)
-
-#include <asm-generic/int-ll64.h>
-
-#ifndef __ASSEMBLY__
-
-typedef unsigned short umode_t;
-
-#endif /* __ASSEMBLY__ */
-
-#endif /* defined(__sparc__) */
-
-#endif /* defined(_SPARC_TYPES_H) */
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 086/131] ACPI / EC: Add support to disallow QR_EC to be issued when SCI_EVT isn't set
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (62 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 122/131] sparc: use asm-generic version of types.h Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 030/131] MIPS: Prevent user from setting FCSR cause bits Ben Hutchings
` (68 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Lv Zheng, Rafael J. Wysocki
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Lv Zheng <lv.zheng@intel.com>
commit 3afcf2ece453e1a8c2c6de19cdf06da3772a1b08 upstream.
There is a platform refusing to respond QR_EC when SCI_EVT isn't set
(Acer Aspire V5-573G).
Currently, we rely on the behaviour that the EC firmware can respond
something (for example, 0x00 to indicate "no outstanding events") to
QR_EC even when SCI_EVT is not set, but the reporter has complained
about AC/battery pluging/unpluging and video brightness change delay
on that platform.
This is because the work item that has issued QR_EC has to wait until
timeout in this case, and the _Qxx method evaluation work item queued
after QR_EC one is delayed.
It sounds reasonable to fix this issue by:
1. Implementing SCI_EVT sanity check before issuing QR_EC in the EC
driver's main state machine.
2. Moving QR_EC issuing out of the work queue used by _Qxx evaluation
to a seperate IRQ handling thread.
This patch fixes this issue using solution 1.
By disallowing QR_EC to be issued when SCI_EVT isn't set, we are able to
handle such platform in the EC driver's main state machine. This patch
enhances the state machine in this way to survive with such malfunctioning
EC firmware.
Note that this patch can also fix CLEAR_ON_RESUME quirk which also relies
on the assumption that the platforms are able to respond even when SCI_EVT
isn't set.
Fixes: c0d653412fc8 ACPI / EC: Fix race condition in ec_transaction_completed()
Link: https://bugzilla.kernel.org/show_bug.cgi?id=82611
Reported-and-tested-by: Alexander Mezin <mezin.alexander@gmail.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/acpi/ec.c | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -193,6 +193,8 @@ static bool advance_transaction(struct a
t->rdata[t->ri++] = acpi_ec_read_data(ec);
if (t->rlen == t->ri) {
t->flags |= ACPI_EC_COMMAND_COMPLETE;
+ if (t->command == ACPI_EC_COMMAND_QUERY)
+ pr_debug("hardware QR_EC completion\n");
wakeup = true;
}
} else
@@ -204,7 +206,20 @@ static bool advance_transaction(struct a
}
return wakeup;
} else {
- if ((status & ACPI_EC_FLAG_IBF) == 0) {
+ /*
+ * There is firmware refusing to respond QR_EC when SCI_EVT
+ * is not set, for which case, we complete the QR_EC
+ * without issuing it to the firmware.
+ * https://bugzilla.kernel.org/show_bug.cgi?id=86211
+ */
+ if (!(status & ACPI_EC_FLAG_SCI) &&
+ (t->command == ACPI_EC_COMMAND_QUERY)) {
+ t->flags |= ACPI_EC_COMMAND_POLL;
+ t->rdata[t->ri++] = 0x00;
+ t->flags |= ACPI_EC_COMMAND_COMPLETE;
+ pr_debug("software QR_EC completion\n");
+ wakeup = true;
+ } else if ((status & ACPI_EC_FLAG_IBF) == 0) {
acpi_ec_write_cmd(ec, t->command);
t->flags |= ACPI_EC_COMMAND_POLL;
} else
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 030/131] MIPS: Prevent user from setting FCSR cause bits
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (63 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 086/131] ACPI / EC: Add support to disallow QR_EC to be issued when SCI_EVT isn't set Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 020/131] staging: vt6655: Fix disassociated messages every 10 seconds Ben Hutchings
` (67 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, linux-mips, Paul Burton, Ralf Baechle
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Paul Burton <paul.burton@imgtec.com>
commit b1442d39fac2fcfbe6a4814979020e993ca59c9e upstream.
If one or more matching FCSR cause & enable bits are set in saved thread
context then when that context is restored the kernel will take an FP
exception. This is of course undesirable and considered an oops, leading
to the kernel writing a backtrace to the console and potentially
rebooting depending upon the configuration. Thus the kernel avoids this
situation by clearing the cause bits of the FCSR register when handling
FP exceptions and after emulating FP instructions.
However the kernel does not prevent userland from setting arbitrary FCSR
cause & enable bits via ptrace, using either the PTRACE_POKEUSR or
PTRACE_SETFPREGS requests. This means userland can trivially cause the
kernel to oops on any system with an FPU. Prevent this from happening
by clearing the cause bits when writing to the saved FCSR context via
ptrace.
This problem appears to exist at least back to the beginning of the git
era in the PTRACE_POKEUSR case.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Paul Burton <paul.burton@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/7438/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/mips/kernel/ptrace.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -162,6 +162,7 @@ int ptrace_setfpregs(struct task_struct
__get_user(fregs[i], i + (__u64 __user *) data);
__get_user(child->thread.fpu.fcr31, data + 64);
+ child->thread.fpu.fcr31 &= ~FPU_CSR_ALL_X;
/* FIR may not be written. */
@@ -452,7 +453,7 @@ long arch_ptrace(struct task_struct *chi
break;
#endif
case FPC_CSR:
- child->thread.fpu.fcr31 = data;
+ child->thread.fpu.fcr31 = data & ~FPU_CSR_ALL_X;
break;
case DSP_BASE ... DSP_BASE + 5: {
dspreg_t *dregs;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 020/131] staging: vt6655: Fix disassociated messages every 10 seconds
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (64 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 030/131] MIPS: Prevent user from setting FCSR cause bits Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 024/131] Fix gcc-4.9.0 miscompilation of load_balance() in scheduler Ben Hutchings
` (66 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Malcolm Priestley, Greg Kroah-Hartman
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Malcolm Priestley <tvboxspy@gmail.com>
commit 4aa0abed3a2a11b7d71ad560c1a3e7631c5a31cd upstream.
byReAssocCount is incremented every second resulting in
disassociated message being send every 10 seconds whether
connection or not.
byReAssocCount should only advance while eCommandState
is in WLAN_ASSOCIATE_WAIT
Change existing scope to if condition.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2: adjust context, indentation]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/staging/vt6655/bssdb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/staging/vt6655/bssdb.c
+++ b/drivers/staging/vt6655/bssdb.c
@@ -1083,7 +1083,7 @@ start:
pDevice->byERPFlag &= ~(WLAN_SET_ERP_USE_PROTECTION(1));
}
-{
+ if (pDevice->eCommandState == WLAN_ASSOCIATE_WAIT) {
pDevice->byReAssocCount++;
if((pDevice->byReAssocCount > 10) && (pDevice->bLinkPass != true)) { //10 sec timeout
printk("Re-association timeout!!!\n");
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 024/131] Fix gcc-4.9.0 miscompilation of load_balance() in scheduler
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (65 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 020/131] staging: vt6655: Fix disassociated messages every 10 seconds Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 097/131] MIPS: Fix accessing to per-cpu data when flushing the cache Ben Hutchings
` (65 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Markus Trippelsdorf, Michel Dänzer, Jakub Jelinek,
Linus Torvalds
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Linus Torvalds <torvalds@linux-foundation.org>
commit 2062afb4f804afef61cbe62a30cac9a46e58e067 upstream.
Michel Dänzer and a couple of other people reported inexplicable random
oopses in the scheduler, and the cause turns out to be gcc mis-compiling
the load_balance() function when debugging is enabled. The gcc bug
apparently goes back to gcc-4.5, but slight optimization changes means
that it now showed up as a problem in 4.9.0 and 4.9.1.
The instruction scheduling problem causes gcc to schedule a spill
operation to before the stack frame has been created, which in turn can
corrupt the spilled value if an interrupt comes in. There may be other
effects of this bug too, but that's the code generation problem seen in
Michel's case.
This is fixed in current gcc HEAD, but the workaround as suggested by
Markus Trippelsdorf is pretty simple: use -fno-var-tracking-assignments
when compiling the kernel, which disables the gcc code that causes the
problem. This can result in slightly worse debug information for
variable accesses, but that is infinitely preferable to actual code
generation problems.
Doing this unconditionally (not just for CONFIG_DEBUG_INFO) also allows
non-debug builds to verify that the debug build would be identical: we
can do
export GCC_COMPARE_DEBUG=1
to make gcc internally verify that the result of the build is
independent of the "-g" flag (it will make the compiler build everything
twice, toggling the debug flag, and compare the results).
Without the "-fno-var-tracking-assignments" option, the build would fail
(even with 4.8.3 that didn't show the actual stack frame bug) with a gcc
compare failure.
See also gcc bugzilla:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61801
Reported-by: Michel Dänzer <michel@daenzer.net>
Suggested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Jakub Jelinek <jakub@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
Makefile | 2 ++
1 file changed, 2 insertions(+)
--- a/Makefile
+++ b/Makefile
@@ -592,6 +592,8 @@ KBUILD_CFLAGS += -fomit-frame-pointer
endif
endif
+KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments)
+
ifdef CONFIG_DEBUG_INFO
KBUILD_CFLAGS += -g
KBUILD_AFLAGS += -gdwarf-2
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 097/131] MIPS: Fix accessing to per-cpu data when flushing the cache
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (66 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 024/131] Fix gcc-4.9.0 miscompilation of load_balance() in scheduler Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 032/131] md/raid1,raid10: always abort recover on write error Ben Hutchings
` (64 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Markos Chandras, linux-mips, Ralf Baechle
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Ralf Baechle <ralf@linux-mips.org>
commit ff522058bd717506b2fa066fa564657f2b86477e upstream.
This fixes the following issue
BUG: using smp_processor_id() in preemptible [00000000] code: kjournald/1761
caller is blast_dcache32+0x30/0x254
Call Trace:
[<8047f02c>] dump_stack+0x8/0x34
[<802e7e40>] debug_smp_processor_id+0xe0/0xf0
[<80114d94>] blast_dcache32+0x30/0x254
[<80118484>] r4k_dma_cache_wback_inv+0x200/0x288
[<80110ff0>] mips_dma_map_sg+0x108/0x180
[<80355098>] ide_dma_prepare+0xf0/0x1b8
[<8034eaa4>] do_rw_taskfile+0x1e8/0x33c
[<8035951c>] ide_do_rw_disk+0x298/0x3e4
[<8034a3c4>] do_ide_request+0x2e0/0x704
[<802bb0dc>] __blk_run_queue+0x44/0x64
[<802be000>] queue_unplugged.isra.36+0x1c/0x54
[<802beb94>] blk_flush_plug_list+0x18c/0x24c
[<802bec6c>] blk_finish_plug+0x18/0x48
[<8026554c>] journal_commit_transaction+0x3b8/0x151c
[<80269648>] kjournald+0xec/0x238
[<8014ac00>] kthread+0xb8/0xc0
[<8010268c>] ret_from_kernel_thread+0x14/0x1c
Caches in most systems are identical - but not always, so we can't avoid
the use of smp_call_function() by just looking at the boot CPU's data,
have to fiddle with preemption instead.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5835
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/mips/mm/c-r4k.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -12,6 +12,7 @@
#include <linux/highmem.h>
#include <linux/kernel.h>
#include <linux/linkage.h>
+#include <linux/preempt.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/mm.h>
@@ -599,6 +600,7 @@ static void r4k_dma_cache_wback_inv(unsi
/* Catch bad driver code */
BUG_ON(size == 0);
+ preempt_disable();
if (cpu_has_inclusive_pcaches) {
if (size >= scache_size)
r4k_blast_scache();
@@ -619,6 +621,7 @@ static void r4k_dma_cache_wback_inv(unsi
R4600_HIT_CACHEOP_WAR_IMPL;
blast_dcache_range(addr, addr + size);
}
+ preempt_enable();
bc_wback_inv(addr, size);
__sync();
@@ -629,6 +632,7 @@ static void r4k_dma_cache_inv(unsigned l
/* Catch bad driver code */
BUG_ON(size == 0);
+ preempt_disable();
if (cpu_has_inclusive_pcaches) {
if (size >= scache_size)
r4k_blast_scache();
@@ -653,6 +657,7 @@ static void r4k_dma_cache_inv(unsigned l
R4600_HIT_CACHEOP_WAR_IMPL;
blast_inv_dcache_range(addr, addr + size);
}
+ preempt_enable();
bc_inv(addr, size);
__sync();
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 032/131] md/raid1,raid10: always abort recover on write error.
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (67 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 097/131] MIPS: Fix accessing to per-cpu data when flushing the cache Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 015/131] usbcore: don't log on consecutive debounce failures of the same port Ben Hutchings
` (63 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, NeilBrown
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: NeilBrown <neilb@suse.de>
commit 2446dba03f9dabe0b477a126cbeb377854785b47 upstream.
Currently we don't abort recovery on a write error if the write error
to the recovering device was triggerd by normal IO (as opposed to
recovery IO).
This means that for one bitmap region, the recovery might write to the
recovering device for a few sectors, then not bother for subsequent
sectors (as it never writes to failed devices). In this case
the bitmap bit will be cleared, but it really shouldn't.
The result is that if the recovering device fails and is then re-added
(after fixing whatever hardware problem triggerred the failure),
the second recovery won't redo the region it was in the middle of,
so some of the device will not be recovered properly.
If we abort the recovery, the region being processes will be cancelled
(bit not cleared) and the whole region will be retried.
As the bug can result in data corruption the patch is suitable for
-stable. For kernels prior to 3.11 there is a conflict in raid10.c
which will require care.
Original-from: jiao hui <jiaohui@bwstor.com.cn>
Reported-and-tested-by: jiao hui <jiaohui@bwstor.com.cn>
Signed-off-by: NeilBrown <neilb@suse.de>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1233,12 +1233,12 @@ static void error(struct mddev *mddev, s
mddev->degraded++;
set_bit(Faulty, &rdev->flags);
spin_unlock_irqrestore(&conf->device_lock, flags);
- /*
- * if recovery is running, make sure it aborts.
- */
- set_bit(MD_RECOVERY_INTR, &mddev->recovery);
} else
set_bit(Faulty, &rdev->flags);
+ /*
+ * if recovery is running, make sure it aborts.
+ */
+ set_bit(MD_RECOVERY_INTR, &mddev->recovery);
set_bit(MD_CHANGE_DEVS, &mddev->flags);
printk(KERN_ALERT
"md/raid1:%s: Disk failure on %s, disabling device.\n"
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1272,11 +1272,11 @@ static void error(struct mddev *mddev, s
spin_lock_irqsave(&conf->device_lock, flags);
mddev->degraded++;
spin_unlock_irqrestore(&conf->device_lock, flags);
- /*
- * if recovery is running, make sure it aborts.
- */
- set_bit(MD_RECOVERY_INTR, &mddev->recovery);
}
+ /*
+ * If recovery is running, make sure it aborts.
+ */
+ set_bit(MD_RECOVERY_INTR, &mddev->recovery);
set_bit(Blocked, &rdev->flags);
set_bit(Faulty, &rdev->flags);
set_bit(MD_CHANGE_DEVS, &mddev->flags);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 015/131] usbcore: don't log on consecutive debounce failures of the same port
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (68 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 032/131] md/raid1,raid10: always abort recover on write error Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 115/131] sparc64: Do not insert non-valid PTEs into the TSB hash table Ben Hutchings
` (62 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Oliver Neukum, Greg Kroah-Hartman
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Oliver Neukum <oneukum@suse.de>
commit 5ee0f803cc3a0738a63288e4a2f453c85889fbda upstream.
Some laptops have an internal port for a BT device which picks
up noise when the kill switch is used, but not enough to trigger
printk_rlimit(). So we shouldn't log consecutive faults of this kind.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2:
- Adjust context
- Error message already includes the port number]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/core/hub.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -3354,6 +3354,7 @@ static void hub_port_connect_change(stru
le16_to_cpu(hub->descriptor->wHubCharacteristics);
struct usb_device *udev;
int status, i;
+ static int unreliable_port = -1;
dev_dbg (hub_dev,
"port %d, status %04x, change %04x, %s\n",
@@ -3415,10 +3416,11 @@ static void hub_port_connect_change(stru
USB_PORT_STAT_C_ENABLE)) {
status = hub_port_debounce(hub, port1);
if (status < 0) {
- if (printk_ratelimit())
+ if (port1 != unreliable_port && printk_ratelimit())
dev_err(hub_dev, "connect-debounce failed, "
"port %d disabled\n", port1);
portstatus &= ~USB_PORT_STAT_CONNECTION;
+ unreliable_port = port1;
} else {
portstatus = status;
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 115/131] sparc64: Do not insert non-valid PTEs into the TSB hash table.
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (69 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 015/131] usbcore: don't log on consecutive debounce failures of the same port Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 019/131] staging: vt6655: Fix Warning on boot handle_irq_event_percpu Ben Hutchings
` (61 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, David S. Miller
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "David S. Miller" <davem@davemloft.net>
[ Upstream commit 18f38132528c3e603c66ea464727b29e9bbcb91b ]
The assumption was that update_mmu_cache() (and the equivalent for PMDs) would
only be called when the PTE being installed will be accessible by the user.
This is not true for code paths originating from remove_migration_pte().
There are dire consequences for placing a non-valid PTE into the TSB. The TLB
miss frramework assumes thatwhen a TSB entry matches we can just load it into
the TLB and return from the TLB miss trap.
So if a non-valid PTE is in there, we will deadlock taking the TLB miss over
and over, never satisfying the miss.
Just exit early from update_mmu_cache() and friends in this situation.
Based upon a report and patch from Christopher Alexander Tobias Schulze.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/sparc/mm/init_64.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index b4989f9..77ad815 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -309,6 +309,10 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *
tsb_index = MM_TSB_BASE;
tsb_hash_shift = PAGE_SHIFT;
+ /* Don't insert a non-valid PTE into the TSB, we'll deadlock. */
+ if (!(pte_val(pte) & _PAGE_VALID))
+ return;
+
spin_lock_irqsave(&mm->context.lock, flags);
#ifdef CONFIG_HUGETLB_PAGE
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 019/131] staging: vt6655: Fix Warning on boot handle_irq_event_percpu.
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (70 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 115/131] sparc64: Do not insert non-valid PTEs into the TSB hash table Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 040/131] crypto: af_alg - properly label AF_ALG socket Ben Hutchings
` (60 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Greg Kroah-Hartman, Malcolm Priestley
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Malcolm Priestley <tvboxspy@gmail.com>
commit 6cff1f6ad4c615319c1a146b2aa0af1043c5e9f5 upstream.
WARNING: CPU: 0 PID: 929 at /home/apw/COD/linux/kernel/irq/handle.c:147 handle_irq_event_percpu+0x1d1/0x1e0()
irq 17 handler device_intr+0x0/0xa80 [vt6655_stage] enabled interrupts
Using spin_lock_irqsave appears to fix this.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2: adjust context, indentation]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/staging/vt6655/device_main.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -2679,6 +2679,7 @@ static irqreturn_t device_intr(int irq
unsigned char byData = 0;
int ii= 0;
// unsigned char byRSSI;
+ unsigned long flags;
MACvReadISR(pDevice->PortOffset, &pDevice->dwIsr);
@@ -2704,7 +2705,8 @@ static irqreturn_t device_intr(int irq
handled = 1;
MACvIntDisable(pDevice->PortOffset);
- spin_lock_irq(&pDevice->lock);
+
+ spin_lock_irqsave(&pDevice->lock, flags);
//Make sure current page is 0
VNSvInPortB(pDevice->PortOffset + MAC_REG_PAGE1SEL, &byOrgPageSel);
@@ -2952,7 +2954,8 @@ static irqreturn_t device_intr(int irq
MACvSelectPage1(pDevice->PortOffset);
}
- spin_unlock_irq(&pDevice->lock);
+ spin_unlock_irqrestore(&pDevice->lock, flags);
+
MACvIntEnable(pDevice->PortOffset, IMR_MASK_VALUE);
return IRQ_RETVAL(handled);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 040/131] crypto: af_alg - properly label AF_ALG socket
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (71 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 019/131] staging: vt6655: Fix Warning on boot handle_irq_event_percpu Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 001/131] KVM: x86: Inter-privilege level ret emulation is not implemeneted Ben Hutchings
` (59 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Paul Moore, Herbert Xu, Milan Broz
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Milan Broz <gmazyland@gmail.com>
commit 4c63f83c2c2e16a13ce274ee678e28246bd33645 upstream.
Th AF_ALG socket was missing a security label (e.g. SELinux)
which means that socket was in "unlabeled" state.
This was recently demonstrated in the cryptsetup package
(cryptsetup v1.6.5 and later.)
See https://bugzilla.redhat.com/show_bug.cgi?id=1115120
This patch clones the sock's label from the parent sock
and resolves the issue (similar to AF_BLUETOOTH protocol family).
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
crypto/af_alg.c | 2 ++
1 file changed, 2 insertions(+)
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -21,6 +21,7 @@
#include <linux/module.h>
#include <linux/net.h>
#include <linux/rwsem.h>
+#include <linux/security.h>
struct alg_type_list {
const struct af_alg_type *type;
@@ -243,6 +244,7 @@ int af_alg_accept(struct sock *sk, struc
sock_init_data(newsock, sk2);
sock_graft(sk2, newsock);
+ security_sk_clone(sk, sk2);
err = type->accept(ask->private, sk2);
if (err) {
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 001/131] KVM: x86: Inter-privilege level ret emulation is not implemeneted
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (72 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 040/131] crypto: af_alg - properly label AF_ALG socket Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 064/131] powerpc/mm: Use read barrier when creating real_pte Ben Hutchings
` (58 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Nadav Amit, Paolo Bonzini
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Nadav Amit <namit@cs.technion.ac.il>
commit 9e8919ae793f4edfaa29694a70f71a515ae9942a upstream.
Return unhandlable error on inter-privilege level ret instruction. This is
since the current emulation does not check the privilege level correctly when
loading the CS, and does not pop RSP/SS as needed.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/x86/kvm/emulate.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -1818,6 +1818,7 @@ static int em_ret_far(struct x86_emulate
{
int rc;
unsigned long cs;
+ int cpl = ctxt->ops->cpl(ctxt);
rc = emulate_pop(ctxt, &ctxt->_eip, ctxt->op_bytes);
if (rc != X86EMUL_CONTINUE)
@@ -1827,6 +1828,9 @@ static int em_ret_far(struct x86_emulate
rc = emulate_pop(ctxt, &cs, ctxt->op_bytes);
if (rc != X86EMUL_CONTINUE)
return rc;
+ /* Outer-privilege level return is not implemented */
+ if (ctxt->mode >= X86EMUL_MODE_PROT16 && (cs & 3) > cpl)
+ return X86EMUL_UNHANDLEABLE;
rc = load_segment_descriptor(ctxt, (u16)cs, VCPU_SREG_CS);
return rc;
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 064/131] powerpc/mm: Use read barrier when creating real_pte
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (73 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 001/131] KVM: x86: Inter-privilege level ret emulation is not implemeneted Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 080/131] xhci: rework cycle bit checking for new dequeue pointers Ben Hutchings
` (57 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Aneesh Kumar K.V, Benjamin Herrenschmidt
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
commit 85c1fafd7262e68ad821ee1808686b1392b1167d upstream.
On ppc64 we support 4K hash pte with 64K page size. That requires
us to track the hash pte slot information on a per 4k basis. We do that
by storing the slot details in the second half of pte page. The pte bit
_PAGE_COMBO is used to indicate whether the second half need to be
looked while building real_pte. We need to use read memory barrier while
doing that so that load of hidx is not reordered w.r.t _PAGE_COMBO
check. On the store side we already do a lwsync in __hash_page_4K
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[bwh: Backported to 3.2: include <asm/system.h> to ensure smp_rmb()
is defined; cell_defconfig fails to build without this]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/powerpc/include/asm/pte-hash64-64k.h | 30 +++++++++++++++++++++++++-----
1 file changed, 25 insertions(+), 5 deletions(-)
--- a/arch/powerpc/include/asm/pte-hash64-64k.h
+++ b/arch/powerpc/include/asm/pte-hash64-64k.h
@@ -40,17 +40,39 @@
#ifndef __ASSEMBLY__
+#include <asm/system.h> /* for smp_rmb() */
+
/*
* With 64K pages on hash table, we have a special PTE format that
* uses a second "half" of the page table to encode sub-page information
* in order to deal with 64K made of 4K HW pages. Thus we override the
* generic accessors and iterators here
*/
-#define __real_pte(e,p) ((real_pte_t) { \
- (e), (pte_val(e) & _PAGE_COMBO) ? \
- (pte_val(*((p) + PTRS_PER_PTE))) : 0 })
-#define __rpte_to_hidx(r,index) ((pte_val((r).pte) & _PAGE_COMBO) ? \
- (((r).hidx >> ((index)<<2)) & 0xf) : ((pte_val((r).pte) >> 12) & 0xf))
+#define __real_pte __real_pte
+static inline real_pte_t __real_pte(pte_t pte, pte_t *ptep)
+{
+ real_pte_t rpte;
+
+ rpte.pte = pte;
+ rpte.hidx = 0;
+ if (pte_val(pte) & _PAGE_COMBO) {
+ /*
+ * Make sure we order the hidx load against the _PAGE_COMBO
+ * check. The store side ordering is done in __hash_page_4K
+ */
+ smp_rmb();
+ rpte.hidx = pte_val(*((ptep) + PTRS_PER_PTE));
+ }
+ return rpte;
+}
+
+static inline unsigned long __rpte_to_hidx(real_pte_t rpte, unsigned long index)
+{
+ if ((pte_val(rpte.pte) & _PAGE_COMBO))
+ return (rpte.hidx >> (index<<2)) & 0xf;
+ return (pte_val(rpte.pte) >> 12) & 0xf;
+}
+
#define __rpte_to_pte(r) ((r).pte)
#define __rpte_sub_valid(rpte, index) \
(pte_val(rpte.pte) & (_PAGE_HPTE_SUB0 >> (index)))
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 080/131] xhci: rework cycle bit checking for new dequeue pointers
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (74 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 064/131] powerpc/mm: Use read barrier when creating real_pte Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 081/131] isofs: Fix unbounded recursion when processing relocated directories Ben Hutchings
` (56 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Maciej Puzio, Greg Kroah-Hartman, Julius Werner,
Evan Langlois, Mathias Nyman
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Mathias Nyman <mathias.nyman@linux.intel.com>
commit 365038d83313951d6ace15342eb24624bbef1666 upstream.
When we manually need to move the TR dequeue pointer we need to set the
correct cycle bit as well. Previously we used the trb pointer from the
last event received as a base, but this was changed in
commit 1f81b6d22a59 ("usb: xhci: Prefer endpoint context dequeue pointer")
to use the dequeue pointer from the endpoint context instead
It turns out some Asmedia controllers advance the dequeue pointer
stored in the endpoint context past the event triggering TRB, and
this messed up the way the cycle bit was calculated.
Instead of adding a quirk or complicating the already hard to follow cycle bit
code, the whole cycle bit calculation is now simplified and adapted to handle
event and endpoint context dequeue pointer differences.
Fixes: 1f81b6d22a59 ("usb: xhci: Prefer endpoint context dequeue pointer")
Reported-by: Maciej Puzio <mx34567@gmail.com>
Reported-by: Evan Langlois <uudruid74@gmail.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: Maciej Puzio <mx34567@gmail.com>
Tested-by: Evan Langlois <uudruid74@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2:
- Debug logging in xhci_find_new_dequeue_state() is slightly different
- Don't delete find_trb_seg(); it's still needed by xhci_cmd_to_noop()]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -572,9 +572,12 @@ void xhci_find_new_dequeue_state(struct
struct xhci_virt_device *dev = xhci->devs[slot_id];
struct xhci_virt_ep *ep = &dev->eps[ep_index];
struct xhci_ring *ep_ring;
- struct xhci_generic_trb *trb;
+ struct xhci_segment *new_seg;
+ union xhci_trb *new_deq;
dma_addr_t addr;
u64 hw_dequeue;
+ bool cycle_found = false;
+ bool td_last_trb_found = false;
ep_ring = xhci_triad_to_transfer_ring(xhci, slot_id,
ep_index, stream_id);
@@ -598,44 +601,45 @@ void xhci_find_new_dequeue_state(struct
hw_dequeue = le64_to_cpu(ep_ctx->deq);
}
- /* Find virtual address and segment of hardware dequeue pointer */
- state->new_deq_seg = ep_ring->deq_seg;
- state->new_deq_ptr = ep_ring->dequeue;
- while (xhci_trb_virt_to_dma(state->new_deq_seg, state->new_deq_ptr)
- != (dma_addr_t)(hw_dequeue & ~0xf)) {
- next_trb(xhci, ep_ring, &state->new_deq_seg,
- &state->new_deq_ptr);
- if (state->new_deq_ptr == ep_ring->dequeue) {
- WARN_ON(1);
- return;
- }
- }
+ new_seg = ep_ring->deq_seg;
+ new_deq = ep_ring->dequeue;
+ state->new_cycle_state = hw_dequeue & 0x1;
+
/*
- * Find cycle state for last_trb, starting at old cycle state of
- * hw_dequeue. If there is only one segment ring, find_trb_seg() will
- * return immediately and cannot toggle the cycle state if this search
- * wraps around, so add one more toggle manually in that case.
+ * We want to find the pointer, segment and cycle state of the new trb
+ * (the one after current TD's last_trb). We know the cycle state at
+ * hw_dequeue, so walk the ring until both hw_dequeue and last_trb are
+ * found.
*/
- state->new_cycle_state = hw_dequeue & 0x1;
- if (ep_ring->first_seg == ep_ring->first_seg->next &&
- cur_td->last_trb < state->new_deq_ptr)
- state->new_cycle_state ^= 0x1;
-
- state->new_deq_ptr = cur_td->last_trb;
- xhci_dbg(xhci, "Finding segment containing last TRB in TD.\n");
- state->new_deq_seg = find_trb_seg(state->new_deq_seg,
- state->new_deq_ptr, &state->new_cycle_state);
- if (!state->new_deq_seg) {
- WARN_ON(1);
- return;
- }
+ do {
+ if (!cycle_found && xhci_trb_virt_to_dma(new_seg, new_deq)
+ == (dma_addr_t)(hw_dequeue & ~0xf)) {
+ cycle_found = true;
+ if (td_last_trb_found)
+ break;
+ }
+ if (new_deq == cur_td->last_trb)
+ td_last_trb_found = true;
+
+ if (cycle_found &&
+ TRB_TYPE_LINK_LE32(new_deq->generic.field[3]) &&
+ new_deq->generic.field[3] & cpu_to_le32(LINK_TOGGLE))
+ state->new_cycle_state ^= 0x1;
+
+ next_trb(xhci, ep_ring, &new_seg, &new_deq);
+
+ /* Search wrapped around, bail out */
+ if (new_deq == ep->ring->dequeue) {
+ xhci_err(xhci, "Error: Failed finding new dequeue state\n");
+ state->new_deq_seg = NULL;
+ state->new_deq_ptr = NULL;
+ return;
+ }
+
+ } while (!cycle_found || !td_last_trb_found);
- /* Increment to find next TRB after last_trb. Cycle if appropriate. */
- trb = &state->new_deq_ptr->generic;
- if (TRB_TYPE_LINK_LE32(trb->field[3]) &&
- (trb->field[3] & cpu_to_le32(LINK_TOGGLE)))
- state->new_cycle_state ^= 0x1;
- next_trb(xhci, ep_ring, &state->new_deq_seg, &state->new_deq_ptr);
+ state->new_deq_seg = new_seg;
+ state->new_deq_ptr = new_deq;
/* Don't update the ring cycle state for the producer (us). */
xhci_dbg(xhci, "Cycle state = 0x%x\n", state->new_cycle_state);
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -2819,6 +2819,9 @@ void xhci_cleanup_stalled_ring(struct xh
ep_index, ep->stopped_stream, ep->stopped_td,
&deq_state);
+ if (!deq_state.new_deq_ptr || !deq_state.new_deq_seg)
+ return;
+
/* HW with the reset endpoint quirk will use the saved dequeue state to
* issue a configure endpoint command later.
*/
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 081/131] isofs: Fix unbounded recursion when processing relocated directories
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (75 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 080/131] xhci: rework cycle bit checking for new dequeue pointers Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 084/131] USB: whiteheat: Added bounds checking for bulk command response Ben Hutchings
` (55 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Jan Kara, Chris Evans
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Jan Kara <jack@suse.cz>
commit 410dd3cf4c9b36f27ed4542ee18b1af5e68645a4 upstream.
We did not check relocated directory in any way when processing Rock
Ridge 'CL' tag. Thus a corrupted isofs image can possibly have a CL
entry pointing to another CL entry leading to possibly unbounded
recursion in kernel code and thus stack overflow or deadlocks (if there
is a loop created from CL entries).
Fix the problem by not allowing CL entry to point to a directory entry
with CL entry (such use makes no good sense anyway) and by checking
whether CL entry doesn't point to itself.
Reported-by: Chris Evans <cevans@google.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
fs/isofs/inode.c | 15 ++++++++-------
fs/isofs/isofs.h | 23 +++++++++++++++++++----
fs/isofs/rock.c | 39 ++++++++++++++++++++++++++++-----------
3 files changed, 55 insertions(+), 22 deletions(-)
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -68,7 +68,7 @@ static void isofs_put_super(struct super
return;
}
-static int isofs_read_inode(struct inode *);
+static int isofs_read_inode(struct inode *, int relocated);
static int isofs_statfs (struct dentry *, struct kstatfs *);
static struct kmem_cache *isofs_inode_cachep;
@@ -1263,7 +1263,7 @@ out_toomany:
goto out;
}
-static int isofs_read_inode(struct inode *inode)
+static int isofs_read_inode(struct inode *inode, int relocated)
{
struct super_block *sb = inode->i_sb;
struct isofs_sb_info *sbi = ISOFS_SB(sb);
@@ -1408,7 +1408,7 @@ static int isofs_read_inode(struct inode
*/
if (!high_sierra) {
- parse_rock_ridge_inode(de, inode);
+ parse_rock_ridge_inode(de, inode, relocated);
/* if we want uid/gid set, override the rock ridge setting */
if (sbi->s_uid_set)
inode->i_uid = sbi->s_uid;
@@ -1487,9 +1487,10 @@ static int isofs_iget5_set(struct inode
* offset that point to the underlying meta-data for the inode. The
* code below is otherwise similar to the iget() code in
* include/linux/fs.h */
-struct inode *isofs_iget(struct super_block *sb,
- unsigned long block,
- unsigned long offset)
+struct inode *__isofs_iget(struct super_block *sb,
+ unsigned long block,
+ unsigned long offset,
+ int relocated)
{
unsigned long hashval;
struct inode *inode;
@@ -1511,7 +1512,7 @@ struct inode *isofs_iget(struct super_bl
return ERR_PTR(-ENOMEM);
if (inode->i_state & I_NEW) {
- ret = isofs_read_inode(inode);
+ ret = isofs_read_inode(inode, relocated);
if (ret < 0) {
iget_failed(inode);
inode = ERR_PTR(ret);
--- a/fs/isofs/isofs.h
+++ b/fs/isofs/isofs.h
@@ -107,7 +107,7 @@ extern int iso_date(char *, int);
struct inode; /* To make gcc happy */
-extern int parse_rock_ridge_inode(struct iso_directory_record *, struct inode *);
+extern int parse_rock_ridge_inode(struct iso_directory_record *, struct inode *, int relocated);
extern int get_rock_ridge_filename(struct iso_directory_record *, char *, struct inode *);
extern int isofs_name_translate(struct iso_directory_record *, char *, struct inode *);
@@ -118,9 +118,24 @@ extern struct dentry *isofs_lookup(struc
extern struct buffer_head *isofs_bread(struct inode *, sector_t);
extern int isofs_get_blocks(struct inode *, sector_t, struct buffer_head **, unsigned long);
-extern struct inode *isofs_iget(struct super_block *sb,
- unsigned long block,
- unsigned long offset);
+struct inode *__isofs_iget(struct super_block *sb,
+ unsigned long block,
+ unsigned long offset,
+ int relocated);
+
+static inline struct inode *isofs_iget(struct super_block *sb,
+ unsigned long block,
+ unsigned long offset)
+{
+ return __isofs_iget(sb, block, offset, 0);
+}
+
+static inline struct inode *isofs_iget_reloc(struct super_block *sb,
+ unsigned long block,
+ unsigned long offset)
+{
+ return __isofs_iget(sb, block, offset, 1);
+}
/* Because the inode number is no longer relevant to finding the
* underlying meta-data for an inode, we are free to choose a more
--- a/fs/isofs/rock.c
+++ b/fs/isofs/rock.c
@@ -288,12 +288,16 @@ eio:
goto out;
}
+#define RR_REGARD_XA 1
+#define RR_RELOC_DE 2
+
static int
parse_rock_ridge_inode_internal(struct iso_directory_record *de,
- struct inode *inode, int regard_xa)
+ struct inode *inode, int flags)
{
int symlink_len = 0;
int cnt, sig;
+ unsigned int reloc_block;
struct inode *reloc;
struct rock_ridge *rr;
int rootflag;
@@ -305,7 +309,7 @@ parse_rock_ridge_inode_internal(struct i
init_rock_state(&rs, inode);
setup_rock_ridge(de, inode, &rs);
- if (regard_xa) {
+ if (flags & RR_REGARD_XA) {
rs.chr += 14;
rs.len -= 14;
if (rs.len < 0)
@@ -485,12 +489,22 @@ repeat:
"relocated directory\n");
goto out;
case SIG('C', 'L'):
- ISOFS_I(inode)->i_first_extent =
- isonum_733(rr->u.CL.location);
- reloc =
- isofs_iget(inode->i_sb,
- ISOFS_I(inode)->i_first_extent,
- 0);
+ if (flags & RR_RELOC_DE) {
+ printk(KERN_ERR
+ "ISOFS: Recursive directory relocation "
+ "is not supported\n");
+ goto eio;
+ }
+ reloc_block = isonum_733(rr->u.CL.location);
+ if (reloc_block == ISOFS_I(inode)->i_iget5_block &&
+ ISOFS_I(inode)->i_iget5_offset == 0) {
+ printk(KERN_ERR
+ "ISOFS: Directory relocation points to "
+ "itself\n");
+ goto eio;
+ }
+ ISOFS_I(inode)->i_first_extent = reloc_block;
+ reloc = isofs_iget_reloc(inode->i_sb, reloc_block, 0);
if (IS_ERR(reloc)) {
ret = PTR_ERR(reloc);
goto out;
@@ -637,9 +651,11 @@ static char *get_symlink_chunk(char *rpn
return rpnt;
}
-int parse_rock_ridge_inode(struct iso_directory_record *de, struct inode *inode)
+int parse_rock_ridge_inode(struct iso_directory_record *de, struct inode *inode,
+ int relocated)
{
- int result = parse_rock_ridge_inode_internal(de, inode, 0);
+ int flags = relocated ? RR_RELOC_DE : 0;
+ int result = parse_rock_ridge_inode_internal(de, inode, flags);
/*
* if rockridge flag was reset and we didn't look for attributes
@@ -647,7 +663,8 @@ int parse_rock_ridge_inode(struct iso_di
*/
if ((ISOFS_SB(inode->i_sb)->s_rock_offset == -1)
&& (ISOFS_SB(inode->i_sb)->s_rock == 2)) {
- result = parse_rock_ridge_inode_internal(de, inode, 14);
+ result = parse_rock_ridge_inode_internal(de, inode,
+ flags | RR_REGARD_XA);
}
return result;
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 084/131] USB: whiteheat: Added bounds checking for bulk command response
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (76 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 081/131] isofs: Fix unbounded recursion when processing relocated directories Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 009/131] mtd/ftl: fix the double free of the buffers allocated in build_maps() Ben Hutchings
` (54 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, James Forshaw, Greg Kroah-Hartman
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: James Forshaw <forshaw@google.com>
commit 6817ae225cd650fb1c3295d769298c38b1eba818 upstream.
This patch fixes a potential security issue in the whiteheat USB driver
which might allow a local attacker to cause kernel memory corrpution. This
is due to an unchecked memcpy into a fixed size buffer (of 64 bytes). On
EHCI and XHCI busses it's possible to craft responses greater than 64
bytes leading a buffer overflow.
Signed-off-by: James Forshaw <forshaw@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/serial/whiteheat.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--- a/drivers/usb/serial/whiteheat.c
+++ b/drivers/usb/serial/whiteheat.c
@@ -1006,6 +1006,10 @@ static void command_port_read_callback(s
dbg("%s - command_info is NULL, exiting.", __func__);
return;
}
+ if (!urb->actual_length) {
+ dev_dbg(&urb->dev->dev, "%s - empty response, exiting.\n", __func__);
+ return;
+ }
if (status) {
dbg("%s - nonzero urb status: %d", __func__, status);
if (status != -ENOENT)
@@ -1027,7 +1031,8 @@ static void command_port_read_callback(s
/* These are unsolicited reports from the firmware, hence no
waiting command to wakeup */
dbg("%s - event received", __func__);
- } else if (data[0] == WHITEHEAT_GET_DTR_RTS) {
+ } else if ((data[0] == WHITEHEAT_GET_DTR_RTS) &&
+ (urb->actual_length - 1 <= sizeof(command_info->result_buffer))) {
memcpy(command_info->result_buffer, &data[1],
urb->actual_length - 1);
command_info->command_finished = WHITEHEAT_CMD_COMPLETE;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 009/131] mtd/ftl: fix the double free of the buffers allocated in build_maps()
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (77 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 084/131] USB: whiteheat: Added bounds checking for bulk command response Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 017/131] drm/radeon: fix irq ring buffer overflow handling Ben Hutchings
` (53 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Brian Norris, Kevin Hao
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Kevin Hao <haokexin@gmail.com>
commit a152056c912db82860a8b4c23d0bd3a5aa89e363 upstream.
I got the following panic on my fsl p5020ds board.
Unable to handle kernel paging request for data at address 0x7375627379737465
Faulting instruction address: 0xc000000000100778
Oops: Kernel access of bad area, sig: 11 [#1]
SMP NR_CPUS=24 CoreNet Generic
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.15.0-next-20140613 #145
task: c0000000fe080000 ti: c0000000fe088000 task.ti: c0000000fe088000
NIP: c000000000100778 LR: c00000000010073c CTR: 0000000000000000
REGS: c0000000fe08aa00 TRAP: 0300 Not tainted (3.15.0-next-20140613)
MSR: 0000000080029000 <CE,EE,ME> CR: 24ad2e24 XER: 00000000
DEAR: 7375627379737465 ESR: 0000000000000000 SOFTE: 1
GPR00: c0000000000c99b0 c0000000fe08ac80 c0000000009598e0 c0000000fe001d80
GPR04: 00000000000000d0 0000000000000913 c000000007902b20 0000000000000000
GPR08: c0000000feaae888 0000000000000000 0000000007091000 0000000000200200
GPR12: 0000000028ad2e28 c00000000fff4000 c0000000007abe08 0000000000000000
GPR16: c0000000007ab160 c0000000007aaf98 c00000000060ba68 c0000000007abda8
GPR20: c0000000007abde8 c0000000feaea6f8 c0000000feaea708 c0000000007abd10
GPR24: c000000000989370 c0000000008c6228 00000000000041ed c0000000fe00a400
GPR28: c00000000017c1cc 00000000000000d0 7375627379737465 c0000000fe001d80
NIP [c000000000100778] .__kmalloc_track_caller+0x70/0x168
LR [c00000000010073c] .__kmalloc_track_caller+0x34/0x168
Call Trace:
[c0000000fe08ac80] [c00000000087e6b8] uevent_sock_list+0x0/0x10 (unreliable)
[c0000000fe08ad20] [c0000000000c99b0] .kstrdup+0x44/0x90
[c0000000fe08adc0] [c00000000017c1cc] .__kernfs_new_node+0x4c/0x130
[c0000000fe08ae70] [c00000000017d7e4] .kernfs_new_node+0x2c/0x64
[c0000000fe08aef0] [c00000000017db00] .kernfs_create_dir_ns+0x34/0xc8
[c0000000fe08af80] [c00000000018067c] .sysfs_create_dir_ns+0x58/0xcc
[c0000000fe08b010] [c0000000002c711c] .kobject_add_internal+0xc8/0x384
[c0000000fe08b0b0] [c0000000002c7644] .kobject_add+0x64/0xc8
[c0000000fe08b140] [c000000000355ebc] .device_add+0x11c/0x654
[c0000000fe08b200] [c0000000002b5988] .add_disk+0x20c/0x4b4
[c0000000fe08b2c0] [c0000000003a21d4] .add_mtd_blktrans_dev+0x340/0x514
[c0000000fe08b350] [c0000000003a3410] .mtdblock_add_mtd+0x74/0xb4
[c0000000fe08b3e0] [c0000000003a32cc] .blktrans_notify_add+0x64/0x94
[c0000000fe08b470] [c00000000039b5b4] .add_mtd_device+0x1d4/0x368
[c0000000fe08b520] [c00000000039b830] .mtd_device_parse_register+0xe8/0x104
[c0000000fe08b5c0] [c0000000003b8408] .of_flash_probe+0x72c/0x734
[c0000000fe08b750] [c00000000035ba40] .platform_drv_probe+0x38/0x84
[c0000000fe08b7d0] [c0000000003599a4] .really_probe+0xa4/0x29c
[c0000000fe08b870] [c000000000359d3c] .__driver_attach+0x100/0x104
[c0000000fe08b900] [c00000000035746c] .bus_for_each_dev+0x84/0xe4
[c0000000fe08b9a0] [c0000000003593c0] .driver_attach+0x24/0x38
[c0000000fe08ba10] [c000000000358f24] .bus_add_driver+0x1c8/0x2ac
[c0000000fe08bab0] [c00000000035a3a4] .driver_register+0x8c/0x158
[c0000000fe08bb30] [c00000000035b9f4] .__platform_driver_register+0x6c/0x80
[c0000000fe08bba0] [c00000000084e080] .of_flash_driver_init+0x1c/0x30
[c0000000fe08bc10] [c000000000001864] .do_one_initcall+0xbc/0x238
[c0000000fe08bd00] [c00000000082cdc0] .kernel_init_freeable+0x188/0x268
[c0000000fe08bdb0] [c0000000000020a0] .kernel_init+0x1c/0xf7c
[c0000000fe08be30] [c000000000000884] .ret_from_kernel_thread+0x58/0xd4
Instruction dump:
41bd0010 480000c8 4bf04eb5 60000000 e94d0028 e93f0000 7cc95214 e8a60008
7fc9502a 2fbe0000 419e00c8 e93f0022 <7f7e482a> 39200000 88ed06b2 992d06b2
---[ end trace b4c9a94804a42d40 ]---
It seems that the corrupted partition header on my mtd device triggers
a bug in the ftl. In function build_maps() it will allocate the buffers
needed by the mtd partition, but if something goes wrong such as kmalloc
failure, mtd read error or invalid partition header parameter, it will
free all allocated buffers and then return non-zero. In my case, it
seems that partition header parameter 'NumTransferUnits' is invalid.
And the ftl_freepart() is a function which free all the partition
buffers allocated by build_maps(). Given the build_maps() is a self
cleaning function, so there is no need to invoke this function even
if build_maps() return with error. Otherwise it will causes the
buffers to be freed twice and then weird things would happen.
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/mtd/ftl.c | 1 -
1 file changed, 1 deletion(-)
--- a/drivers/mtd/ftl.c
+++ b/drivers/mtd/ftl.c
@@ -1074,7 +1074,6 @@ static void ftl_add_mtd(struct mtd_blktr
return;
}
- ftl_freepart(partition);
kfree(partition);
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 017/131] drm/radeon: fix irq ring buffer overflow handling
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (78 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 009/131] mtd/ftl: fix the double free of the buffers allocated in build_maps() Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 039/131] MIPS: GIC: Prevent array overrun Ben Hutchings
` (52 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Michel Dänzer, Christian König, Alex Deucher
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Christian König <christian.koenig@amd.com>
commit e8c214d22e76dd0ead38f97f8d2dc09aac70d651 upstream.
We must mask out the overflow bit as well, otherwise
the wptr will never match the rptr again and the interrupt
handler will loop forever.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
[bwh: Backported to 3.2: drop changes for unsupported GPUs]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -2765,6 +2765,7 @@ static u32 evergreen_get_ih_wptr(struct
tmp = RREG32(IH_RB_CNTL);
tmp |= IH_WPTR_OVERFLOW_CLEAR;
WREG32(IH_RB_CNTL, tmp);
+ wptr &= ~RB_OVERFLOW;
}
return (wptr & rdev->ih.ptr_mask);
}
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -3280,6 +3280,7 @@ static u32 r600_get_ih_wptr(struct radeo
tmp = RREG32(IH_RB_CNTL);
tmp |= IH_WPTR_OVERFLOW_CLEAR;
WREG32(IH_RB_CNTL, tmp);
+ wptr &= ~RB_OVERFLOW;
}
return (wptr & rdev->ih.ptr_mask);
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 039/131] MIPS: GIC: Prevent array overrun
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (79 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 017/131] drm/radeon: fix irq ring buffer overflow handling Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 068/131] CIFS: Fix wrong directory attributes after rename Ben Hutchings
` (51 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Ralf Baechle, Jeffrey Deans, Markos Chandras, linux-mips
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Jeffrey Deans <jeffrey.deans@imgtec.com>
commit ffc8415afab20bd97754efae6aad1f67b531132b upstream.
A GIC interrupt which is declared as having a GIC_MAP_TO_NMI_MSK
mapping causes the cpu parameter to gic_setup_intr() to be increased
to 32, causing memory corruption when pcpu_masks[] is written to again
later in the function.
Signed-off-by: Jeffrey Deans <jeffrey.deans@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7375/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/mips/kernel/irq-gic.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/arch/mips/kernel/irq-gic.c
+++ b/arch/mips/kernel/irq-gic.c
@@ -166,11 +166,13 @@ static void __init gic_setup_intr(unsign
{
/* Setup Intr to Pin mapping */
if (pin & GIC_MAP_TO_NMI_MSK) {
+ int i;
+
GICWRITE(GIC_REG_ADDR(SHARED, GIC_SH_MAP_TO_PIN(intr)), pin);
/* FIXME: hack to route NMI to all cpu's */
- for (cpu = 0; cpu < NR_CPUS; cpu += 32) {
+ for (i = 0; i < NR_CPUS; i += 32) {
GICWRITE(GIC_REG_ADDR(SHARED,
- GIC_SH_MAP_TO_VPE_REG_OFF(intr, cpu)),
+ GIC_SH_MAP_TO_VPE_REG_OFF(intr, i)),
0xffffffff);
}
} else {
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 068/131] CIFS: Fix wrong directory attributes after rename
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (80 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 039/131] MIPS: GIC: Prevent array overrun Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 052/131] powerpc/mm/numa: Fix break placement Ben Hutchings
` (50 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Steve French, Pavel Shilovsky
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Pavel Shilovsky <pshilovsky@samba.org>
commit b46799a8f28c43c5264ac8d8ffa28b311b557e03 upstream.
When we requests rename we also need to update attributes
of both source and target parent directories. Not doing it
causes generic/309 xfstest to fail on SMB2 mounts. Fix this
by marking these directories for force revalidating.
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
fs/cifs/inode.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1638,6 +1638,12 @@ unlink_target:
target_dentry, toName);
}
+ /* force revalidate to go get info when needed */
+ CIFS_I(source_dir)->time = CIFS_I(target_dir)->time = 0;
+
+ source_dir->i_ctime = source_dir->i_mtime = target_dir->i_ctime =
+ target_dir->i_mtime = current_fs_time(source_dir->i_sb);
+
cifs_rename_exit:
kfree(info_buf_source);
kfree(fromName);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 052/131] powerpc/mm/numa: Fix break placement
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (81 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 068/131] CIFS: Fix wrong directory attributes after rename Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 107/131] sctp: fix possible seqlock seadlock in sctp_packet_transmit() Ben Hutchings
` (49 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, David Binderman, Benjamin Herrenschmidt, Andrey Utkin
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Andrey Utkin <andrey.krieger.utkin@gmail.com>
commit b00fc6ec1f24f9d7af9b8988b6a198186eb3408c upstream.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=81631
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Andrey Utkin <andrey.krieger.utkin@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/powerpc/mm/numa.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -600,8 +600,8 @@ static int __cpuinit cpu_numa_callback(s
case CPU_UP_CANCELED:
case CPU_UP_CANCELED_FROZEN:
unmap_cpu_from_node(lcpu);
- break;
ret = NOTIFY_OK;
+ break;
#endif
}
return ret;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 107/131] sctp: fix possible seqlock seadlock in sctp_packet_transmit()
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (82 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 052/131] powerpc/mm/numa: Fix break placement Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 109/131] sparc64: Make itc_sync_lock raw Ben Hutchings
` (48 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Hannes Frederic Sowa, Neil Horman, Eric Dumazet,
David S. Miller, Dave Jones
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
[ Upstream commit 757efd32d5ce31f67193cc0e6a56e4dffcc42fb1 ]
Dave reported following splat, caused by improper use of
IP_INC_STATS_BH() in process context.
BUG: using __this_cpu_add() in preemptible [00000000] code: trinity-c117/14551
caller is __this_cpu_preempt_check+0x13/0x20
CPU: 3 PID: 14551 Comm: trinity-c117 Not tainted 3.16.0+ #33
ffffffff9ec898f0 0000000047ea7e23 ffff88022d32f7f0 ffffffff9e7ee207
0000000000000003 ffff88022d32f818 ffffffff9e397eaa ffff88023ee70b40
ffff88022d32f970 ffff8801c026d580 ffff88022d32f828 ffffffff9e397ee3
Call Trace:
[<ffffffff9e7ee207>] dump_stack+0x4e/0x7a
[<ffffffff9e397eaa>] check_preemption_disabled+0xfa/0x100
[<ffffffff9e397ee3>] __this_cpu_preempt_check+0x13/0x20
[<ffffffffc0839872>] sctp_packet_transmit+0x692/0x710 [sctp]
[<ffffffffc082a7f2>] sctp_outq_flush+0x2a2/0xc30 [sctp]
[<ffffffff9e0d985c>] ? mark_held_locks+0x7c/0xb0
[<ffffffff9e7f8c6d>] ? _raw_spin_unlock_irqrestore+0x5d/0x80
[<ffffffffc082b99a>] sctp_outq_uncork+0x1a/0x20 [sctp]
[<ffffffffc081e112>] sctp_cmd_interpreter.isra.23+0x1142/0x13f0 [sctp]
[<ffffffffc081c86b>] sctp_do_sm+0xdb/0x330 [sctp]
[<ffffffff9e0b8f1b>] ? preempt_count_sub+0xab/0x100
[<ffffffffc083b350>] ? sctp_cname+0x70/0x70 [sctp]
[<ffffffffc08389ca>] sctp_primitive_ASSOCIATE+0x3a/0x50 [sctp]
[<ffffffffc083358f>] sctp_sendmsg+0x88f/0xe30 [sctp]
[<ffffffff9e0d673a>] ? lock_release_holdtime.part.28+0x9a/0x160
[<ffffffff9e0d62ce>] ? put_lock_stats.isra.27+0xe/0x30
[<ffffffff9e73b624>] inet_sendmsg+0x104/0x220
[<ffffffff9e73b525>] ? inet_sendmsg+0x5/0x220
[<ffffffff9e68ac4e>] sock_sendmsg+0x9e/0xe0
[<ffffffff9e1c0c09>] ? might_fault+0xb9/0xc0
[<ffffffff9e1c0bae>] ? might_fault+0x5e/0xc0
[<ffffffff9e68b234>] SYSC_sendto+0x124/0x1c0
[<ffffffff9e0136b0>] ? syscall_trace_enter+0x250/0x330
[<ffffffff9e68c3ce>] SyS_sendto+0xe/0x10
[<ffffffff9e7f9be4>] tracesys+0xdd/0xe2
This is a followup of commits f1d8cba61c3c4b ("inet: fix possible
seqlock deadlocks") and 7f88c6b23afbd315 ("ipv6: fix possible seqlock
deadlock in ip6_finish_output2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Reported-by: Dave Jones <davej@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
net/sctp/output.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/sctp/output.c b/net/sctp/output.c
index cf3e22c..5bd9aa9 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -587,7 +587,7 @@ out:
return err;
no_route:
kfree_skb(nskb);
- IP_INC_STATS_BH(&init_net, IPSTATS_MIB_OUTNOROUTES);
+ IP_INC_STATS(&init_net, IPSTATS_MIB_OUTNOROUTES);
/* FIXME: Returning the 'err' will effect all the associations
* associated with a socket, although only one of the paths of the
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 109/131] sparc64: Make itc_sync_lock raw
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (83 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 107/131] sctp: fix possible seqlock seadlock in sctp_packet_transmit() Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 071/131] USB: ftdi_sio: add Basic Micro ATOM Nano USB2Serial PID Ben Hutchings
` (47 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, David S. Miller, Kirill Tkhai
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Kirill Tkhai <tkhai@yandex.ru>
[ Upstream commit 49b6c01f4c1de3b5e5427ac5aba80f9f6d27837a ]
One more place where we must not be able
to be preempted or to be interrupted in RT.
Always actually disable interrupts during
synchronization cycle.
Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/sparc/kernel/smp_64.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index e21d3c0d..ffd1245 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -151,7 +151,7 @@ void cpu_panic(void)
#define NUM_ROUNDS 64 /* magic value */
#define NUM_ITERS 5 /* likewise */
-static DEFINE_SPINLOCK(itc_sync_lock);
+static DEFINE_RAW_SPINLOCK(itc_sync_lock);
static unsigned long go[SLAVE + 1];
#define DEBUG_TICK_SYNC 0
@@ -259,7 +259,7 @@ static void smp_synchronize_one_tick(int cpu)
go[MASTER] = 0;
membar_safe("#StoreLoad");
- spin_lock_irqsave(&itc_sync_lock, flags);
+ raw_spin_lock_irqsave(&itc_sync_lock, flags);
{
for (i = 0; i < NUM_ROUNDS*NUM_ITERS; i++) {
while (!go[MASTER])
@@ -270,7 +270,7 @@ static void smp_synchronize_one_tick(int cpu)
membar_safe("#StoreLoad");
}
}
- spin_unlock_irqrestore(&itc_sync_lock, flags);
+ raw_spin_unlock_irqrestore(&itc_sync_lock, flags);
}
#if defined(CONFIG_SUN_LDOMS) && defined(CONFIG_HOTPLUG_CPU)
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 071/131] USB: ftdi_sio: add Basic Micro ATOM Nano USB2Serial PID
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (84 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 109/131] sparc64: Make itc_sync_lock raw Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 075/131] pata_scc: propagate return value of scc_wait_after_reset Ben Hutchings
` (46 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Nicolas Alt, Johan Hovold
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <johan@kernel.org>
commit 6552cc7f09261db2aeaae389aa2c05a74b3a93b4 upstream.
Add device id for Basic Micro ATOM Nano USB2Serial adapters.
Reported-by: Nicolas Alt <n.alt@mytum.de>
Tested-by: Nicolas Alt <n.alt@mytum.de>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/serial/ftdi_sio.c | 1 +
drivers/usb/serial/ftdi_sio_ids.h | 2 ++
2 files changed, 3 insertions(+)
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -162,6 +162,7 @@ static struct usb_device_id id_table_com
{ USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_CANDAPTER_PID) },
+ { USB_DEVICE(FTDI_VID, FTDI_BM_ATOM_NANO_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_NXTCAM_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_EV3CON_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_0_PID) },
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -42,6 +42,8 @@
/* www.candapter.com Ewert Energy Systems CANdapter device */
#define FTDI_CANDAPTER_PID 0x9F80 /* Product Id */
+#define FTDI_BM_ATOM_NANO_PID 0xa559 /* Basic Micro ATOM Nano USB2Serial */
+
/*
* Texas Instruments XDS100v2 JTAG / BeagleBone A3
* http://processors.wiki.ti.com/index.php/XDS100
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 075/131] pata_scc: propagate return value of scc_wait_after_reset
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (85 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 071/131] USB: ftdi_sio: add Basic Micro ATOM Nano USB2Serial PID Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 058/131] ring-buffer: Up rb_iter_peek() loop count to 3 Ben Hutchings
` (45 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Tejun Heo, Arjun Sreedharan
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Arjun Sreedharan <arjun024@gmail.com>
commit 4dc7c76cd500fa78c64adfda4b070b870a2b993c upstream.
scc_bus_softreset not necessarily should return zero.
Propagate the error code.
Signed-off-by: Arjun Sreedharan <arjun024@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/ata/pata_scc.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
--- a/drivers/ata/pata_scc.c
+++ b/drivers/ata/pata_scc.c
@@ -586,7 +586,7 @@ static int scc_wait_after_reset(struct a
* Note: Original code is ata_bus_softreset().
*/
-static unsigned int scc_bus_softreset(struct ata_port *ap, unsigned int devmask,
+static int scc_bus_softreset(struct ata_port *ap, unsigned int devmask,
unsigned long deadline)
{
struct ata_ioports *ioaddr = &ap->ioaddr;
@@ -600,9 +600,7 @@ static unsigned int scc_bus_softreset(st
udelay(20);
out_be32(ioaddr->ctl_addr, ap->ctl);
- scc_wait_after_reset(&ap->link, devmask, deadline);
-
- return 0;
+ return scc_wait_after_reset(&ap->link, devmask, deadline);
}
/**
@@ -619,7 +617,8 @@ static int scc_softreset(struct ata_link
{
struct ata_port *ap = link->ap;
unsigned int slave_possible = ap->flags & ATA_FLAG_SLAVE_POSS;
- unsigned int devmask = 0, err_mask;
+ unsigned int devmask = 0;
+ int rc;
u8 err;
DPRINTK("ENTER\n");
@@ -635,9 +634,9 @@ static int scc_softreset(struct ata_link
/* issue bus reset */
DPRINTK("about to softreset, devmask=%x\n", devmask);
- err_mask = scc_bus_softreset(ap, devmask, deadline);
- if (err_mask) {
- ata_port_err(ap, "SRST failed (err_mask=0x%x)\n", err_mask);
+ rc = scc_bus_softreset(ap, devmask, deadline);
+ if (rc) {
+ ata_port_err(ap, "SRST failed (err_mask=0x%x)\n", rc);
return -EIO;
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 058/131] ring-buffer: Up rb_iter_peek() loop count to 3
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (86 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 075/131] pata_scc: propagate return value of scc_wait_after_reset Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 016/131] USB: Fix persist resume of some SS USB devices Ben Hutchings
` (44 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Steven Rostedt (Red Hat)
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "Steven Rostedt (Red Hat)" <rostedt@goodmis.org>
commit 021de3d904b88b1771a3a2cfc5b75023c391e646 upstream.
After writting a test to try to trigger the bug that caused the
ring buffer iterator to become corrupted, I hit another bug:
WARNING: CPU: 1 PID: 5281 at kernel/trace/ring_buffer.c:3766 rb_iter_peek+0x113/0x238()
Modules linked in: ipt_MASQUERADE sunrpc [...]
CPU: 1 PID: 5281 Comm: grep Tainted: G W 3.16.0-rc3-test+ #143
Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./To be filled by O.E.M., BIOS SDBLI944.86P 05/08/2007
0000000000000000 ffffffff81809a80 ffffffff81503fb0 0000000000000000
ffffffff81040ca1 ffff8800796d6010 ffffffff810c138d ffff8800796d6010
ffff880077438c80 ffff8800796d6010 ffff88007abbe600 0000000000000003
Call Trace:
[<ffffffff81503fb0>] ? dump_stack+0x4a/0x75
[<ffffffff81040ca1>] ? warn_slowpath_common+0x7e/0x97
[<ffffffff810c138d>] ? rb_iter_peek+0x113/0x238
[<ffffffff810c138d>] ? rb_iter_peek+0x113/0x238
[<ffffffff810c14df>] ? ring_buffer_iter_peek+0x2d/0x5c
[<ffffffff810c6f73>] ? tracing_iter_reset+0x6e/0x96
[<ffffffff810c74a3>] ? s_start+0xd7/0x17b
[<ffffffff8112b13e>] ? kmem_cache_alloc_trace+0xda/0xea
[<ffffffff8114cf94>] ? seq_read+0x148/0x361
[<ffffffff81132d98>] ? vfs_read+0x93/0xf1
[<ffffffff81132f1b>] ? SyS_read+0x60/0x8e
[<ffffffff8150bf9f>] ? tracesys+0xdd/0xe2
Debugging this bug, which triggers when the rb_iter_peek() loops too
many times (more than 2 times), I discovered there's a case that can
cause that function to legitimately loop 3 times!
rb_iter_peek() is different than rb_buffer_peek() as the rb_buffer_peek()
only deals with the reader page (it's for consuming reads). The
rb_iter_peek() is for traversing the buffer without consuming it, and as
such, it can loop for one more reason. That is, if we hit the end of
the reader page or any page, it will go to the next page and try again.
That is, we have this:
1. iter->head > iter->head_page->page->commit
(rb_inc_iter() which moves the iter to the next page)
try again
2. event = rb_iter_head_event()
event->type_len == RINGBUF_TYPE_TIME_EXTEND
rb_advance_iter()
try again
3. read the event.
But we never get to 3, because the count is greater than 2 and we
cause the WARNING and return NULL.
Up the counter to 3.
Fixes: 69d1b839f7ee "ring-buffer: Bind time extend and data events together"
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
[bwh: Backported to 3.2: drop inapplicable spelling correction]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -3246,12 +3246,14 @@ rb_iter_peek(struct ring_buffer_iter *it
return NULL;
/*
- * We repeat when a time extend is encountered.
- * Since the time extend is always attached to a data event,
- * we should never loop more than once.
- * (We never hit the following condition more than twice).
+ * We repeat when a time extend is encountered or we hit
+ * the end of the page. Since the time extend is always attached
+ * to a data event, we should never loop more than three times.
+ * Once for going to next page, once on time extend, and
+ * finally once to get the event.
+ * (We never hit the following condition more than thrice).
*/
- if (RB_WARN_ON(cpu_buffer, ++nr_loops > 2))
+ if (RB_WARN_ON(cpu_buffer, ++nr_loops > 3))
return NULL;
if (rb_per_cpu_empty(cpu_buffer))
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 016/131] USB: Fix persist resume of some SS USB devices
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (87 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 058/131] ring-buffer: Up rb_iter_peek() loop count to 3 Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 006/131] serial: core: Preserve termios c_cflag for console resume Ben Hutchings
` (43 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Pratyush Anand, Alan Stern, Greg Kroah-Hartman
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Pratyush Anand <pratyush.anand@st.com>
commit a40178b2fa6ad87670fb1e5fa4024db00c149629 upstream.
Problem Summary: Problem has been observed generally with PM states
where VBUS goes off during suspend. There are some SS USB devices which
take longer time for link training compared to many others. Such
devices fail to reconnect with same old address which was associated
with it before suspend.
When system resumes, at some point of time (dpm_run_callback->
usb_dev_resume->usb_resume->usb_resume_both->usb_resume_device->
usb_port_resume) SW reads hub status. If device is present,
then it finishes port resume and re-enumerates device with same
address. If device is not present then, SW thinks that device was
removed during suspend and therefore does logical disconnection
and removes all the resource allocated for this device.
Now, if I put sufficient delay just before root hub status read in
usb_resume_device then, SW sees always that device is present. In normal
course(without any delay) SW sees that no device is present and then SW
removes all resource associated with the device at this port. In the
latter case, after sometime, device says that hey I am here, now host
enumerates it, but with new address.
Problem had been reproduced when I connect verbatim USB3.0 hard disc
with my STiH407 XHCI host running with 3.10 kernel.
I see that similar problem has been reported here.
https://bugzilla.kernel.org/show_bug.cgi?id=53211
Reading above it seems that bug was not in 3.6.6 and was present in 3.8
and again it was not present for some in 3.12.6, while it was present
for few others. I tested with 3.13-FC19 running at i686 desktop, problem
was still there. However, I was failed to reproduce it with 3.16-RC4
running at same i686 machine. I would say it is just a random
observation. Problem for few devices is always there, as I am unable to
find a proper fix for the issue.
So, now question is what should be the amount of delay so that host is
always able to recognize suspended device after resume.
XHCI specs 4.19.4 says that when Link training is successful, port sets
CSC bit to 1. So if SW reads port status before successful link
training, then it will not find device to be present. USB Analyzer log
with such buggy devices show that in some cases device switch on the
RX termination after long delay of host enabling the VBUS. In few other
cases it has been seen that device fails to negotiate link training in
first attempt. It has been reported till now that few devices take as
long as 2000 ms to train the link after host enabling its VBUS and
RX termination. This patch implements a 2000 ms timeout for CSC bit to set
ie for link training. If in a case link trains before timeout, loop will
exit earlier.
This patch implements above delay, but only for SS device and when
persist is enabled.
So, for the good device overhead is almost none. While for the bad
devices penalty could be the time which it take for link training.
But, If a device was connected before suspend, and was removed
while system was asleep, then the penalty would be the timeout ie
2000 ms.
Results:
Verbatim USB SS hard disk connected with STiH407 USB host running 3.10
Kernel resumes in 461 msecs without this patch, but hard disk is
assigned a new device address. Same system resumes in 790 msecs with
this patch, but with old device address.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/core/hub.c | 41 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2651,6 +2651,43 @@ static int finish_port_resume(struct usb
}
/*
+ * There are some SS USB devices which take longer time for link training.
+ * XHCI specs 4.19.4 says that when Link training is successful, port
+ * sets CSC bit to 1. So if SW reads port status before successful link
+ * training, then it will not find device to be present.
+ * USB Analyzer log with such buggy devices show that in some cases
+ * device switch on the RX termination after long delay of host enabling
+ * the VBUS. In few other cases it has been seen that device fails to
+ * negotiate link training in first attempt. It has been
+ * reported till now that few devices take as long as 2000 ms to train
+ * the link after host enabling its VBUS and termination. Following
+ * routine implements a 2000 ms timeout for link training. If in a case
+ * link trains before timeout, loop will exit earlier.
+ *
+ * FIXME: If a device was connected before suspend, but was removed
+ * while system was asleep, then the loop in the following routine will
+ * only exit at timeout.
+ *
+ * This routine should only be called when persist is enabled for a SS
+ * device.
+ */
+static int wait_for_ss_port_enable(struct usb_device *udev,
+ struct usb_hub *hub, int *port1,
+ u16 *portchange, u16 *portstatus)
+{
+ int status = 0, delay_ms = 0;
+
+ while (delay_ms < 2000) {
+ if (status || *portstatus & USB_PORT_STAT_CONNECTION)
+ break;
+ msleep(20);
+ delay_ms += 20;
+ status = hub_port_status(hub, *port1, portstatus, portchange);
+ }
+ return status;
+}
+
+/*
* usb_port_resume - re-activate a suspended usb device's upstream port
* @udev: device to re-activate, not a root hub
* Context: must be able to sleep; device not locked; pm locks held
@@ -2742,6 +2779,10 @@ int usb_port_resume(struct usb_device *u
clear_bit(port1, hub->busy_bits);
+ if (udev->persist_enabled && hub_is_superspeed(hub->hdev))
+ status = wait_for_ss_port_enable(udev, hub, &port1, &portchange,
+ &portstatus);
+
status = check_port_resume_type(udev,
hub, port1, status, portchange, portstatus);
if (status == 0)
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 006/131] serial: core: Preserve termios c_cflag for console resume
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (88 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 016/131] USB: Fix persist resume of some SS USB devices Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 005/131] debugfs: Fix corrupted loop in debugfs_remove_recursive Ben Hutchings
` (42 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Peter Hurley, Valerio Vanni, Greg Kroah-Hartman, Alan Cox
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Peter Hurley <peter@hurleysoftware.com>
commit ae84db9661cafc63d179e1d985a2c5b841ff0ac4 upstream.
When a tty is opened for the serial console, the termios c_cflag
settings are inherited from the console line settings.
However, if the tty is subsequently closed, the termios settings
are lost. This results in a garbled console if the console is later
suspended and resumed.
Preserve the termios c_cflag for the serial console when the tty
is shutdown; this reflects the most recent line settings.
Fixes: Bugzilla #69751, 'serial console does not wake from S3'
Reported-by: Valerio Vanni <valerio.vanni@inwind.it>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2: tty_struct::termios is a pointer]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/tty/serial/serial_core.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -225,6 +225,9 @@ static void uart_shutdown(struct tty_str
/*
* Turn off DTR and RTS early.
*/
+ if (uart_console(uport) && tty)
+ uport->cons->cflag = tty->termios->c_cflag;
+
if (!tty || (tty->termios->c_cflag & HUPCL))
uart_clear_mctrl(uport, TIOCM_DTR | TIOCM_RTS);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 005/131] debugfs: Fix corrupted loop in debugfs_remove_recursive
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (89 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 006/131] serial: core: Preserve termios c_cflag for console resume Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 110/131] sparc64: Handle 32-bit tasks properly in compute_effective_address() Ben Hutchings
` (41 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Steven Rostedt, Greg Kroah-Hartman
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Steven Rostedt <rostedt@goodmis.org>
commit 485d44022a152c0254dd63445fdb81c4194cbf0e upstream.
[ I'm currently running my tests on it now, and so far, after a few
hours it has yet to blow up. I'll run it for 24 hours which it never
succeeded in the past. ]
The tracing code has a way to make directories within the debugfs file
system as well as deleting them using mkdir/rmdir in the instance
directory. This is very limited in functionality, such as there is
no renames, and the parent directory "instance" can not be modified.
The tracing code creates the instance directory from the debugfs code
and then replaces the dentry->d_inode->i_op with its own to allow
for mkdir/rmdir to work.
When these are called, the d_entry and inode locks need to be released
to call the instance creation and deletion code. That code has its own
accounting and locking to serialize everything to prevent multiple
users from causing harm. As the parent "instance" directory can not
be modified this simplifies things.
I created a stress test that creates several threads that randomly
creates and deletes directories thousands of times a second. The code
stood up to this test and I submitted it a while ago.
Recently I added a new test that adds readers to the mix. While the
instance directories were being added and deleted, readers would read
from these directories and even enable tracing within them. This test
was able to trigger a bug:
general protection fault: 0000 [#1] PREEMPT SMP
Modules linked in: ...
CPU: 3 PID: 17789 Comm: rmdir Tainted: G W 3.15.0-rc2-test+ #41
Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./To be filled by O.E.M., BIOS SDBLI944.86P 05/08/2007
task: ffff88003786ca60 ti: ffff880077018000 task.ti: ffff880077018000
RIP: 0010:[<ffffffff811ed5eb>] [<ffffffff811ed5eb>] debugfs_remove_recursive+0x1bd/0x367
RSP: 0018:ffff880077019df8 EFLAGS: 00010246
RAX: 0000000000000002 RBX: ffff88006f0fe490 RCX: 0000000000000000
RDX: dead000000100058 RSI: 0000000000000246 RDI: ffff88003786d454
RBP: ffff88006f0fe640 R08: 0000000000000628 R09: 0000000000000000
R10: 0000000000000628 R11: ffff8800795110a0 R12: ffff88006f0fe640
R13: ffff88006f0fe640 R14: ffffffff81817d0b R15: ffffffff818188b7
FS: 00007ff13ae24700(0000) GS:ffff88007d580000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000003054ec7be0 CR3: 0000000076d51000 CR4: 00000000000007e0
Stack:
ffff88007a41ebe0 dead000000100058 00000000fffffffe ffff88006f0fe640
0000000000000000 ffff88006f0fe678 ffff88007a41ebe0 ffff88003793a000
00000000fffffffe ffffffff810bde82 ffff88006f0fe640 ffff88007a41eb28
Call Trace:
[<ffffffff810bde82>] ? instance_rmdir+0x15b/0x1de
[<ffffffff81132e2d>] ? vfs_rmdir+0x80/0xd3
[<ffffffff81132f51>] ? do_rmdir+0xd1/0x139
[<ffffffff8124ad9e>] ? trace_hardirqs_on_thunk+0x3a/0x3c
[<ffffffff814fea62>] ? system_call_fastpath+0x16/0x1b
Code: fe ff ff 48 8d 75 30 48 89 df e8 c9 fd ff ff 85 c0 75 13 48 c7 c6 b8 cc d2 81 48 c7 c7 b0 cc d2 81 e8 8c 7a f5 ff 48 8b 54 24 08 <48> 8b 82 a8 00 00 00 48 89 d3 48 2d a8 00 00 00 48 89 44 24 08
RIP [<ffffffff811ed5eb>] debugfs_remove_recursive+0x1bd/0x367
RSP <ffff880077019df8>
It took a while, but every time it triggered, it was always in the
same place:
list_for_each_entry_safe(child, next, &parent->d_subdirs, d_u.d_child) {
Where the child->d_u.d_child seemed to be corrupted. I added lots of
trace_printk()s to see what was wrong, and sure enough, it was always
the child's d_u.d_child field. I looked around to see what touches
it and noticed that in __dentry_kill() which calls dentry_free():
static void dentry_free(struct dentry *dentry)
{
/* if dentry was never visible to RCU, immediate free is OK */
if (!(dentry->d_flags & DCACHE_RCUACCESS))
__d_free(&dentry->d_u.d_rcu);
else
call_rcu(&dentry->d_u.d_rcu, __d_free);
}
I also noticed that __dentry_kill() unlinks the child->d_u.child
under the parent->d_lock spin_lock.
Looking back at the loop in debugfs_remove_recursive() it never takes the
parent->d_lock to do the list walk. Adding more tracing, I was able to
prove this was the issue:
ftrace-t-15385 1.... 246662024us : dentry_kill <ffffffff81138b91>: free ffff88006d573600
rmdir-15409 2.... 246662024us : debugfs_remove_recursive <ffffffff811ec7e5>: child=ffff88006d573600 next=dead000000100058
The dentry_kill freed ffff88006d573600 just as the remove recursive was walking
it.
In order to fix this, the list walk needs to be modified a bit to take
the parent->d_lock. The safe version is no longer necessary, as every
time we remove a child, the parent->d_lock must be released and the
list walk must start over. Each time a child is removed, even though it
may still be on the list, it should be skipped by the first check
in the loop:
if (!debugfs_positive(child))
continue;
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2: deleted code is slightly different; we don't
have list_next_entry()]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
fs/debugfs/inode.c | 33 ++++++++++++++++++++++++++-------
1 file changed, 26 insertions(+), 7 deletions(-)
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -380,7 +380,7 @@ EXPORT_SYMBOL_GPL(debugfs_remove);
*/
void debugfs_remove_recursive(struct dentry *dentry)
{
- struct dentry *child, *next, *parent;
+ struct dentry *child, *parent;
if (!dentry)
return;
@@ -392,31 +392,49 @@ void debugfs_remove_recursive(struct den
parent = dentry;
down:
mutex_lock(&parent->d_inode->i_mutex);
- list_for_each_entry_safe(child, next, &parent->d_subdirs, d_u.d_child) {
+ loop:
+ /*
+ * The parent->d_subdirs is protected by the d_lock. Outside that
+ * lock, the child can be unlinked and set to be freed which can
+ * use the d_u.d_child as the rcu head and corrupt this list.
+ */
+ spin_lock(&parent->d_lock);
+ list_for_each_entry(child, &parent->d_subdirs, d_u.d_child) {
if (!debugfs_positive(child))
continue;
/* perhaps simple_empty(child) makes more sense */
if (!list_empty(&child->d_subdirs)) {
+ spin_unlock(&parent->d_lock);
mutex_unlock(&parent->d_inode->i_mutex);
parent = child;
goto down;
}
- up:
+
+ spin_unlock(&parent->d_lock);
+
if (!__debugfs_remove(child, parent))
simple_release_fs(&debugfs_mount, &debugfs_mount_count);
+
+ /*
+ * The parent->d_lock protects agaist child from unlinking
+ * from d_subdirs. When releasing the parent->d_lock we can
+ * no longer trust that the next pointer is valid.
+ * Restart the loop. We'll skip this one with the
+ * debugfs_positive() check.
+ */
+ goto loop;
}
+ spin_unlock(&parent->d_lock);
mutex_unlock(&parent->d_inode->i_mutex);
child = parent;
parent = parent->d_parent;
mutex_lock(&parent->d_inode->i_mutex);
- if (child != dentry) {
- next = list_entry(child->d_u.d_child.next, struct dentry,
- d_u.d_child);
- goto up;
- }
+ if (child != dentry)
+ /* go up */
+ goto loop;
if (!__debugfs_remove(child, parent))
simple_release_fs(&debugfs_mount, &debugfs_mount_count);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 110/131] sparc64: Handle 32-bit tasks properly in compute_effective_address().
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (90 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 005/131] debugfs: Fix corrupted loop in debugfs_remove_recursive Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 103/131] net: sctp: inherit auth_capable on INIT collisions Ben Hutchings
` (40 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, David S. Miller
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "David S. Miller" <davem@davemloft.net>
[ Upstream commit d037d16372bbe4d580342bebbb8826821ad9edf0 ]
If we have a 32-bit task we must chop off the top 32-bits of the
64-bit value just as the cpu would.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/sparc/kernel/unaligned_64.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c
index 76e4ac1..1c90812 100644
--- a/arch/sparc/kernel/unaligned_64.c
+++ b/arch/sparc/kernel/unaligned_64.c
@@ -156,17 +156,23 @@ static unsigned long *fetch_reg_addr(unsigned int reg, struct pt_regs *regs)
unsigned long compute_effective_address(struct pt_regs *regs,
unsigned int insn, unsigned int rd)
{
+ int from_kernel = (regs->tstate & TSTATE_PRIV) != 0;
unsigned int rs1 = (insn >> 14) & 0x1f;
unsigned int rs2 = insn & 0x1f;
- int from_kernel = (regs->tstate & TSTATE_PRIV) != 0;
+ unsigned long addr;
if (insn & 0x2000) {
maybe_flush_windows(rs1, 0, rd, from_kernel);
- return (fetch_reg(rs1, regs) + sign_extend_imm13(insn));
+ addr = (fetch_reg(rs1, regs) + sign_extend_imm13(insn));
} else {
maybe_flush_windows(rs1, rs2, rd, from_kernel);
- return (fetch_reg(rs1, regs) + fetch_reg(rs2, regs));
+ addr = (fetch_reg(rs1, regs) + fetch_reg(rs2, regs));
}
+
+ if (!from_kernel && test_thread_flag(TIF_32BIT))
+ addr &= 0xffffffff;
+
+ return addr;
}
/* This is just to make gcc think die_if_kernel does return... */
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 103/131] net: sctp: inherit auth_capable on INIT collisions
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (91 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 110/131] sparc64: Handle 32-bit tasks properly in compute_effective_address() Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 023/131] Drivers: scsi: storvsc: Implement a eh_timed_out handler Ben Hutchings
` (39 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, David S. Miller, Daniel Borkmann, Jason Gunthorpe,
Vlad Yasevich
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Daniel Borkmann <dborkman@redhat.com>
[ Upstream commit 1be9a950c646c9092fb3618197f7b6bfb50e82aa ]
Jason reported an oops caused by SCTP on his ARM machine with
SCTP authentication enabled:
Internal error: Oops: 17 [#1] ARM
CPU: 0 PID: 104 Comm: sctp-test Not tainted 3.13.0-68744-g3632f30c9b20-dirty #1
task: c6eefa40 ti: c6f52000 task.ti: c6f52000
PC is at sctp_auth_calculate_hmac+0xc4/0x10c
LR is at sg_init_table+0x20/0x38
pc : [<c024bb80>] lr : [<c00f32dc>] psr: 40000013
sp : c6f538e8 ip : 00000000 fp : c6f53924
r10: c6f50d80 r9 : 00000000 r8 : 00010000
r7 : 00000000 r6 : c7be4000 r5 : 00000000 r4 : c6f56254
r3 : c00c8170 r2 : 00000001 r1 : 00000008 r0 : c6f1e660
Flags: nZcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 0005397f Table: 06f28000 DAC: 00000015
Process sctp-test (pid: 104, stack limit = 0xc6f521c0)
Stack: (0xc6f538e8 to 0xc6f54000)
[...]
Backtrace:
[<c024babc>] (sctp_auth_calculate_hmac+0x0/0x10c) from [<c0249af8>] (sctp_packet_transmit+0x33c/0x5c8)
[<c02497bc>] (sctp_packet_transmit+0x0/0x5c8) from [<c023e96c>] (sctp_outq_flush+0x7fc/0x844)
[<c023e170>] (sctp_outq_flush+0x0/0x844) from [<c023ef78>] (sctp_outq_uncork+0x24/0x28)
[<c023ef54>] (sctp_outq_uncork+0x0/0x28) from [<c0234364>] (sctp_side_effects+0x1134/0x1220)
[<c0233230>] (sctp_side_effects+0x0/0x1220) from [<c02330b0>] (sctp_do_sm+0xac/0xd4)
[<c0233004>] (sctp_do_sm+0x0/0xd4) from [<c023675c>] (sctp_assoc_bh_rcv+0x118/0x160)
[<c0236644>] (sctp_assoc_bh_rcv+0x0/0x160) from [<c023d5bc>] (sctp_inq_push+0x6c/0x74)
[<c023d550>] (sctp_inq_push+0x0/0x74) from [<c024a6b0>] (sctp_rcv+0x7d8/0x888)
While we already had various kind of bugs in that area
ec0223ec48a9 ("net: sctp: fix sctp_sf_do_5_1D_ce to verify if
we/peer is AUTH capable") and b14878ccb7fa ("net: sctp: cache
auth_enable per endpoint"), this one is a bit of a different
kind.
Giving a bit more background on why SCTP authentication is
needed can be found in RFC4895:
SCTP uses 32-bit verification tags to protect itself against
blind attackers. These values are not changed during the
lifetime of an SCTP association.
Looking at new SCTP extensions, there is the need to have a
method of proving that an SCTP chunk(s) was really sent by
the original peer that started the association and not by a
malicious attacker.
To cause this bug, we're triggering an INIT collision between
peers; normal SCTP handshake where both sides intent to
authenticate packets contains RANDOM; CHUNKS; HMAC-ALGO
parameters that are being negotiated among peers:
---------- INIT[RANDOM; CHUNKS; HMAC-ALGO] ---------->
<------- INIT-ACK[RANDOM; CHUNKS; HMAC-ALGO] ---------
-------------------- COOKIE-ECHO -------------------->
<-------------------- COOKIE-ACK ---------------------
RFC4895 says that each endpoint therefore knows its own random
number and the peer's random number *after* the association
has been established. The local and peer's random number along
with the shared key are then part of the secret used for
calculating the HMAC in the AUTH chunk.
Now, in our scenario, we have 2 threads with 1 non-blocking
SEQ_PACKET socket each, setting up common shared SCTP_AUTH_KEY
and SCTP_AUTH_ACTIVE_KEY properly, and each of them calling
sctp_bindx(3), listen(2) and connect(2) against each other,
thus the handshake looks similar to this, e.g.:
---------- INIT[RANDOM; CHUNKS; HMAC-ALGO] ---------->
<------- INIT-ACK[RANDOM; CHUNKS; HMAC-ALGO] ---------
<--------- INIT[RANDOM; CHUNKS; HMAC-ALGO] -----------
-------- INIT-ACK[RANDOM; CHUNKS; HMAC-ALGO] -------->
...
Since such collisions can also happen with verification tags,
the RFC4895 for AUTH rather vaguely says under section 6.1:
In case of INIT collision, the rules governing the handling
of this Random Number follow the same pattern as those for
the Verification Tag, as explained in Section 5.2.4 of
RFC 2960 [5]. Therefore, each endpoint knows its own Random
Number and the peer's Random Number after the association
has been established.
In RFC2960, section 5.2.4, we're eventually hitting Action B:
B) In this case, both sides may be attempting to start an
association at about the same time but the peer endpoint
started its INIT after responding to the local endpoint's
INIT. Thus it may have picked a new Verification Tag not
being aware of the previous Tag it had sent this endpoint.
The endpoint should stay in or enter the ESTABLISHED
state but it MUST update its peer's Verification Tag from
the State Cookie, stop any init or cookie timers that may
running and send a COOKIE ACK.
In other words, the handling of the Random parameter is the
same as behavior for the Verification Tag as described in
Action B of section 5.2.4.
Looking at the code, we exactly hit the sctp_sf_do_dupcook_b()
case which triggers an SCTP_CMD_UPDATE_ASSOC command to the
side effect interpreter, and in fact it properly copies over
peer_{random, hmacs, chunks} parameters from the newly created
association to update the existing one.
Also, the old asoc_shared_key is being released and based on
the new params, sctp_auth_asoc_init_active_key() updated.
However, the issue observed in this case is that the previous
asoc->peer.auth_capable was 0, and has *not* been updated, so
that instead of creating a new secret, we're doing an early
return from the function sctp_auth_asoc_init_active_key()
leaving asoc->asoc_shared_key as NULL. However, we now have to
authenticate chunks from the updated chunk list (e.g. COOKIE-ACK).
That in fact causes the server side when responding with ...
<------------------ AUTH; COOKIE-ACK -----------------
... to trigger a NULL pointer dereference, since in
sctp_packet_transmit(), it discovers that an AUTH chunk is
being queued for xmit, and thus it calls sctp_auth_calculate_hmac().
Since the asoc->active_key_id is still inherited from the
endpoint, and the same as encoded into the chunk, it uses
asoc->asoc_shared_key, which is still NULL, as an asoc_key
and dereferences it in ...
crypto_hash_setkey(desc.tfm, &asoc_key->data[0], asoc_key->len)
... causing an oops. All this happens because sctp_make_cookie_ack()
called with the *new* association has the peer.auth_capable=1
and therefore marks the chunk with auth=1 after checking
sctp_auth_send_cid(), but it is *actually* sent later on over
the then *updated* association's transport that didn't initialize
its shared key due to peer.auth_capable=0. Since control chunks
in that case are not sent by the temporary association which
are scheduled for deletion, they are issued for xmit via
SCTP_CMD_REPLY in the interpreter with the context of the
*updated* association. peer.auth_capable was 0 in the updated
association (which went from COOKIE_WAIT into ESTABLISHED state),
since all previous processing that performed sctp_process_init()
was being done on temporary associations, that we eventually
throw away each time.
The correct fix is to update to the new peer.auth_capable
value as well in the collision case via sctp_assoc_update(),
so that in case the collision migrated from 0 -> 1,
sctp_auth_asoc_init_active_key() can properly recalculate
the secret. This therefore fixes the observed server panic.
Fixes: 730fc3d05cd4 ("[SCTP]: Implete SCTP-AUTH parameter processing")
Reported-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Tested-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Cc: Vlad Yasevich <vyasevich@gmail.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
net/sctp/associola.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 25b207b..da54d29 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -1188,6 +1188,7 @@ void sctp_assoc_update(struct sctp_association *asoc,
asoc->c = new->c;
asoc->peer.rwnd = new->peer.rwnd;
asoc->peer.sack_needed = new->peer.sack_needed;
+ asoc->peer.auth_capable = new->peer.auth_capable;
asoc->peer.i = new->peer.i;
sctp_tsnmap_init(&asoc->peer.tsn_map, SCTP_TSN_MAP_INITIAL,
asoc->peer.i.initial_tsn, GFP_ATOMIC);
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 023/131] Drivers: scsi: storvsc: Implement a eh_timed_out handler
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (92 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 103/131] net: sctp: inherit auth_capable on INIT collisions Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 092/131] ARM: 8129/1: errata: work around Cortex-A15 erratum 830321 using dummy strex Ben Hutchings
` (38 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Christoph Hellwig, K. Y. Srinivasan, Hannes Reinecke
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "K. Y. Srinivasan" <kys@microsoft.com>
commit 56b26e69c8283121febedd12b3cc193384af46b9 upstream.
On Azure, we have seen instances of unbounded I/O latencies. To deal with
this issue, implement handler that can reset the timeout. Note that the
host gaurantees that it will respond to each command that has been issued.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
[hch: added a better comment explaining the issue]
Signed-off-by: Christoph Hellwig <hch@lst.de>
[bwh: Backported to 3.2: adjust filename, context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/staging/hv/storvsc_drv.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
--- a/drivers/staging/hv/storvsc_drv.c
+++ b/drivers/staging/hv/storvsc_drv.c
@@ -32,6 +32,7 @@
#include <linux/module.h>
#include <linux/device.h>
#include <linux/hyperv.h>
+#include <linux/blkdev.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_host.h>
@@ -1129,6 +1130,16 @@ static void storvsc_command_completion(s
kmem_cache_free(host_dev->request_pool, cmd_request);
}
+/*
+ * The host guarantees to respond to each command, although I/O latencies might
+ * be unbounded on Azure. Reset the timer unconditionally to give the host a
+ * chance to perform EH.
+ */
+static enum blk_eh_timer_return storvsc_eh_timed_out(struct scsi_cmnd *scmnd)
+{
+ return BLK_EH_RESET_TIMER;
+}
+
static bool storvsc_check_scsi_cmd(struct scsi_cmnd *scmnd)
{
bool allowed = true;
@@ -1305,6 +1316,7 @@ static struct scsi_host_template scsi_dr
.bios_param = storvsc_get_chs,
.queuecommand = storvsc_queuecommand,
.eh_host_reset_handler = storvsc_host_reset_handler,
+ .eh_timed_out = storvsc_eh_timed_out,
.slave_alloc = storvsc_device_alloc,
.slave_configure = storvsc_device_configure,
.cmd_per_lun = 1,
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 092/131] ARM: 8129/1: errata: work around Cortex-A15 erratum 830321 using dummy strex
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (93 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 023/131] Drivers: scsi: storvsc: Implement a eh_timed_out handler Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 100/131] ip: make IP identifiers less predictable Ben Hutchings
` (37 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Mark Rutland, Russell King, Will Deacon
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Mark Rutland <mark.rutland@arm.com>
commit 2c32c65e3726c773760038910be30cce1b4d4149 upstream.
On revisions of Cortex-A15 prior to r3p3, a CLREX instruction at PL1 may
falsely trigger a watchpoint exception, leading to potential data aborts
during exception return and/or livelock.
This patch resolves the issue in the following ways:
- Replacing our uses of CLREX with a dummy STREX sequence instead (as
we did for v6 CPUs).
- Removing the clrex code from v7_exit_coherency_flush and derivatives,
since this only exists as a minor performance improvement when
non-cached exclusives are in use (Linux doesn't use these).
Benchmarking on a variety of ARM cores revealed no measurable
performance difference with this change applied, so the change is
performed unconditionally and no new Kconfig entry is added.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
[bwh: Backported to 3.2:
- Drop inapplicable changes to arch/arm/include/asm/cacheflush.h and
arch/arm/mach-exynos/mcpm-exynos.c]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
--- a/arch/arm/kernel/entry-header.S
+++ b/arch/arm/kernel/entry-header.S
@@ -76,26 +76,21 @@
#ifndef CONFIG_THUMB2_KERNEL
.macro svc_exit, rpsr
msr spsr_cxsf, \rpsr
-#if defined(CONFIG_CPU_V6)
- ldr r0, [sp]
- strex r1, r2, [sp] @ clear the exclusive monitor
- ldmib sp, {r1 - pc}^ @ load r1 - pc, cpsr
-#elif defined(CONFIG_CPU_32v6K)
- clrex @ clear the exclusive monitor
- ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr
-#else
- ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr
+#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_32v6K)
+ @ We must avoid clrex due to Cortex-A15 erratum #830321
+ sub r0, sp, #4 @ uninhabited address
+ strex r1, r2, [r0] @ clear the exclusive monitor
#endif
+ ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr
.endm
.macro restore_user_regs, fast = 0, offset = 0
ldr r1, [sp, #\offset + S_PSR] @ get calling cpsr
ldr lr, [sp, #\offset + S_PC]! @ get pc
msr spsr_cxsf, r1 @ save in spsr_svc
-#if defined(CONFIG_CPU_V6)
+#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_32v6K)
+ @ We must avoid clrex due to Cortex-A15 erratum #830321
strex r1, r2, [sp] @ clear the exclusive monitor
-#elif defined(CONFIG_CPU_32v6K)
- clrex @ clear the exclusive monitor
#endif
.if \fast
ldmdb sp, {r1 - lr}^ @ get calling r1 - lr
@@ -123,7 +118,10 @@
.macro svc_exit, rpsr
ldr lr, [sp, #S_SP] @ top of the stack
ldrd r0, r1, [sp, #S_LR] @ calling lr and pc
- clrex @ clear the exclusive monitor
+
+ @ We must avoid clrex due to Cortex-A15 erratum #830321
+ strex r2, r1, [sp, #S_LR] @ clear the exclusive monitor
+
stmdb lr!, {r0, r1, \rpsr} @ calling lr and rfe context
ldmia sp, {r0 - r12}
mov sp, lr
@@ -132,13 +130,16 @@
.endm
.macro restore_user_regs, fast = 0, offset = 0
- clrex @ clear the exclusive monitor
mov r2, sp
load_user_sp_lr r2, r3, \offset + S_SP @ calling sp, lr
ldr r1, [sp, #\offset + S_PSR] @ get calling cpsr
ldr lr, [sp, #\offset + S_PC] @ get pc
add sp, sp, #\offset + S_SP
msr spsr_cxsf, r1 @ save in spsr_svc
+
+ @ We must avoid clrex due to Cortex-A15 erratum #830321
+ strex r1, r2, [sp] @ clear the exclusive monitor
+
.if \fast
ldmdb sp, {r1 - r12} @ get calling r1 - r12
.else
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 100/131] ip: make IP identifiers less predictable
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (94 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 092/131] ARM: 8129/1: errata: work around Cortex-A15 erratum 830321 using dummy strex Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 043/131] netlabel: use GFP flags from caller instead of GFP_ATOMIC Ben Hutchings
` (36 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, David S. Miller, Eric Dumazet, Willy Tarreau,
Hannes Frederic Sowa, Jeffrey Knockel, Jedidiah R. Crandall
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
[ Upstream commit 04ca6973f7c1a0d8537f2d9906a0cf8e69886d75 ]
In "Counting Packets Sent Between Arbitrary Internet Hosts", Jeffrey and
Jedidiah describe ways exploiting linux IP identifier generation to
infer whether two machines are exchanging packets.
With commit 73f156a6e8c1 ("inetpeer: get rid of ip_id_count"), we
changed IP id generation, but this does not really prevent this
side-channel technique.
This patch adds a random amount of perturbation so that IP identifiers
for a given destination [1] are no longer monotonically increasing after
an idle period.
Note that prandom_u32_max(1) returns 0, so if generator is used at most
once per jiffy, this patch inserts no hole in the ID suite and do not
increase collision probability.
This is jiffies based, so in the worst case (HZ=1000), the id can
rollover after ~65 seconds of idle time, which should be fine.
We also change the hash used in __ip_select_ident() to not only hash
on daddr, but also saddr and protocol, so that ICMP probes can not be
used to infer information for other protocols.
For IPv6, adds saddr into the hash as well, but not nexthdr.
If I ping the patched target, we can see ID are now hard to predict.
21:57:11.008086 IP (...)
A > target: ICMP echo request, seq 1, length 64
21:57:11.010752 IP (... id 2081 ...)
target > A: ICMP echo reply, seq 1, length 64
21:57:12.013133 IP (...)
A > target: ICMP echo request, seq 2, length 64
21:57:12.015737 IP (... id 3039 ...)
target > A: ICMP echo reply, seq 2, length 64
21:57:13.016580 IP (...)
A > target: ICMP echo request, seq 3, length 64
21:57:13.019251 IP (... id 3437 ...)
target > A: ICMP echo reply, seq 3, length 64
[1] TCP sessions uses a per flow ID generator not changed by this patch.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Jeffrey Knockel <jeffk@cs.unm.edu>
Reported-by: Jedidiah R. Crandall <crandall@cs.unm.edu>
Cc: Willy Tarreau <w@1wt.eu>
Cc: Hannes Frederic Sowa <hannes@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
include/net/ip.h | 11 +----------
net/ipv4/route.c | 36 +++++++++++++++++++++++++++++++++---
net/ipv6/ip6_output.c | 2 ++
3 files changed, 36 insertions(+), 13 deletions(-)
diff --git a/include/net/ip.h b/include/net/ip.h
index f4ccdd6..1ee535b 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -264,16 +264,7 @@ int ip_dont_fragment(struct sock *sk, struct dst_entry *dst)
!(dst_metric_locked(dst, RTAX_MTU)));
}
-#define IP_IDENTS_SZ 2048u
-extern atomic_t *ip_idents;
-
-static inline u32 ip_idents_reserve(u32 hash, int segs)
-{
- atomic_t *id_ptr = ip_idents + hash % IP_IDENTS_SZ;
-
- return atomic_add_return(segs, id_ptr) - segs;
-}
-
+u32 ip_idents_reserve(u32 hash, int segs);
void __ip_select_ident(struct iphdr *iph, int segs);
static inline void ip_select_ident_segs(struct sk_buff *skb, struct sock *sk, int segs)
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 278784e..d361dc0 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1344,8 +1344,35 @@ void rt_bind_peer(struct rtable *rt, __be32 daddr, int create)
rt->rt_peer_genid = rt_peer_genid();
}
-atomic_t *ip_idents __read_mostly;
-EXPORT_SYMBOL(ip_idents);
+#define IP_IDENTS_SZ 2048u
+struct ip_ident_bucket {
+ atomic_t id;
+ u32 stamp32;
+};
+
+static struct ip_ident_bucket *ip_idents __read_mostly;
+
+/* In order to protect privacy, we add a perturbation to identifiers
+ * if one generator is seldom used. This makes hard for an attacker
+ * to infer how many packets were sent between two points in time.
+ */
+u32 ip_idents_reserve(u32 hash, int segs)
+{
+ struct ip_ident_bucket *bucket = ip_idents + hash % IP_IDENTS_SZ;
+ u32 old = ACCESS_ONCE(bucket->stamp32);
+ u32 now = (u32)jiffies;
+ u32 delta = 0;
+
+ if (old != now && cmpxchg(&bucket->stamp32, old, now) == old) {
+ u64 x = random32();
+
+ x *= (now - old);
+ delta = (u32)(x >> 32);
+ }
+
+ return atomic_add_return(segs + delta, &bucket->id) - segs;
+}
+EXPORT_SYMBOL(ip_idents_reserve);
void __ip_select_ident(struct iphdr *iph, int segs)
{
@@ -1358,7 +1385,10 @@ void __ip_select_ident(struct iphdr *iph, int segs)
get_random_bytes(&ip_idents_hashrnd, sizeof(ip_idents_hashrnd));
}
- hash = jhash_1word((__force u32)iph->daddr, ip_idents_hashrnd);
+ hash = jhash_3words((__force u32)iph->daddr,
+ (__force u32)iph->saddr,
+ iph->protocol,
+ ip_idents_hashrnd);
id = ip_idents_reserve(hash, segs);
iph->id = htons(id);
}
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index f79defc..46fc6a3 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -609,6 +609,8 @@ void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt)
get_random_bytes(&ip6_idents_hashrnd, sizeof(ip6_idents_hashrnd));
}
hash = __ipv6_addr_jhash(&rt->rt6i_dst.addr, ip6_idents_hashrnd);
+ hash = __ipv6_addr_jhash(&rt->rt6i_src.addr, hash);
+
id = ip_idents_reserve(hash, 1);
fhdr->identification = htonl(id);
}
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 043/131] netlabel: use GFP flags from caller instead of GFP_ATOMIC
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (95 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 100/131] ip: make IP identifiers less predictable Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 028/131] hwmon: (ads1015) Fix off-by-one for valid channel index checking Ben Hutchings
` (35 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, David S. Miller, Dan Carpenter
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Dan Carpenter <dan.carpenter@oracle.com>
commit 64b5fad526f63e9b56752a7e8e153b99ec0ddecd upstream.
This function takes a GFP flags as a parameter, but they are never used.
We don't take a lock in this function so there is no reason to prefer
GFP_ATOMIC over the caller's GFP flags.
There is only one caller, cipso_v4_map_cat_rng_ntoh(), and it passes
GFP_ATOMIC as the GFP flags so this doesn't change how the code works.
It's just a cleanup.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
net/netlabel/netlabel_kapi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/netlabel/netlabel_kapi.c
+++ b/net/netlabel/netlabel_kapi.c
@@ -597,7 +597,7 @@ int netlbl_secattr_catmap_setrng(struct
iter = iter->next;
iter_max_spot = iter->startbit + NETLBL_CATMAP_SIZE;
}
- ret_val = netlbl_secattr_catmap_setbit(iter, spot, GFP_ATOMIC);
+ ret_val = netlbl_secattr_catmap_setbit(iter, spot, flags);
}
return ret_val;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 028/131] hwmon: (ads1015) Fix off-by-one for valid channel index checking
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (96 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 043/131] netlabel: use GFP flags from caller instead of GFP_ATOMIC Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 034/131] ext4: fix ext4_discard_allocated_blocks() if we can't allocate the pa struct Ben Hutchings
` (34 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Guenter Roeck, Axel Lin
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Axel Lin <axel.lin@ingics.com>
commit 56de1377ad92f72ee4e5cb0faf7a9b6048fdf0bf upstream.
Current code uses channel as array index, so the valid channel value is
0 .. ADS1015_CHANNELS - 1.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/hwmon/ads1015.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/hwmon/ads1015.c
+++ b/drivers/hwmon/ads1015.c
@@ -186,7 +186,7 @@ static int ads1015_get_channels_config_o
}
channel = be32_to_cpup(property);
- if (channel > ADS1015_CHANNELS) {
+ if (channel >= ADS1015_CHANNELS) {
dev_err(&client->dev,
"invalid channel index %d on %s\n",
channel, node->full_name);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 034/131] ext4: fix ext4_discard_allocated_blocks() if we can't allocate the pa struct
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (97 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 028/131] hwmon: (ads1015) Fix off-by-one for valid channel index checking Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 116/131] sparc64: Guard against flushing openfirmware mappings Ben Hutchings
` (33 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Theodore Ts'o
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Theodore Ts'o <tytso@mit.edu>
commit 86f0afd463215fc3e58020493482faa4ac3a4d69 upstream.
If there is a failure while allocating the preallocation structure, a
number of blocks can end up getting marked in the in-memory buddy
bitmap, and then not getting released. This can result in the
following corruption getting reported by the kernel:
EXT4-fs error (device sda3): ext4_mb_generate_buddy:758: group 1126,
12793 clusters in bitmap, 12729 in gd
In that case, we need to release the blocks using mb_free_blocks().
Tested: fs smoke test; also demonstrated that with injected errors,
the file system is no longer getting corrupted
Google-Bug-Id: 16657874
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
fs/ext4/mballoc.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3128,8 +3128,27 @@ static void ext4_mb_collect_stats(struct
static void ext4_discard_allocated_blocks(struct ext4_allocation_context *ac)
{
struct ext4_prealloc_space *pa = ac->ac_pa;
+ struct ext4_buddy e4b;
+ int err;
- if (pa && pa->pa_type == MB_INODE_PA)
+ if (pa == NULL) {
+ err = ext4_mb_load_buddy(ac->ac_sb, ac->ac_f_ex.fe_group, &e4b);
+ if (err) {
+ /*
+ * This should never happen since we pin the
+ * pages in the ext4_allocation_context so
+ * ext4_mb_load_buddy() should never fail.
+ */
+ WARN(1, "mb_load_buddy failed (%d)", err);
+ return;
+ }
+ ext4_lock_group(ac->ac_sb, ac->ac_f_ex.fe_group);
+ mb_free_blocks(ac->ac_inode, &e4b, ac->ac_f_ex.fe_start,
+ ac->ac_f_ex.fe_len);
+ ext4_unlock_group(ac->ac_sb, ac->ac_f_ex.fe_group);
+ return;
+ }
+ if (pa->pa_type == MB_INODE_PA)
pa->pa_free += ac->ac_b_ex.fe_len;
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 116/131] sparc64: Guard against flushing openfirmware mappings.
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (98 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 034/131] ext4: fix ext4_discard_allocated_blocks() if we can't allocate the pa struct Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 046/131] USB: serial: ftdi_sio: Add support for new Xsens devices Ben Hutchings
` (32 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, David S. Miller
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "David S. Miller" <davem@davemloft.net>
[ Upstream commit 4ca9a23765da3260058db3431faf5b4efd8cf926 ]
Based almost entirely upon a patch by Christopher Alexander Tobias
Schulze.
In commit db64fe02258f1507e13fe5212a989922323685ce ("mm: rewrite vmap
layer") lazy VMAP tlb flushing was added to the vmalloc layer. This
causes problems on sparc64.
Sparc64 has two VMAP mapped regions and they are not contiguous with
eachother. First we have the malloc mapping area, then another
unrelated region, then the vmalloc region.
This "another unrelated region" is where the firmware is mapped.
If the lazy TLB flushing logic in the vmalloc code triggers after
we've had both a module unload and a vfree or similar, it will pass an
address range that goes from somewhere inside the malloc region to
somewhere inside the vmalloc region, and thus covering the
openfirmware area entirely.
The sparc64 kernel learns about openfirmware's dynamic mappings in
this region early in the boot, and then services TLB misses in this
area. But openfirmware has some locked TLB entries which are not
mentioned in those dynamic mappings and we should thus not disturb
them.
These huge lazy TLB flush ranges causes those openfirmware locked TLB
entries to be removed, resulting in all kinds of problems including
hard hangs and crashes during reboot/reset.
Besides causing problems like this, such huge TLB flush ranges are
also incredibly inefficient. A plea has been made with the author of
the VMAP lazy TLB flushing code, but for now we'll put a safety guard
into our flush_tlb_kernel_range() implementation.
Since the implementation has become non-trivial, stop defining it as a
macro and instead make it a function in a C source file.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/sparc/include/asm/tlbflush_64.h | 12 ++----------
arch/sparc/mm/init_64.c | 23 +++++++++++++++++++++++
2 files changed, 25 insertions(+), 10 deletions(-)
diff --git a/arch/sparc/include/asm/tlbflush_64.h b/arch/sparc/include/asm/tlbflush_64.h
index f0d6a97..1a4bb97 100644
--- a/arch/sparc/include/asm/tlbflush_64.h
+++ b/arch/sparc/include/asm/tlbflush_64.h
@@ -35,6 +35,8 @@ static inline void flush_tlb_range(struct vm_area_struct *vma,
{
}
+void flush_tlb_kernel_range(unsigned long start, unsigned long end);
+
#define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
extern void flush_tlb_pending(void);
@@ -49,11 +51,6 @@ extern void __flush_tlb_kernel_range(unsigned long start, unsigned long end);
#ifndef CONFIG_SMP
-#define flush_tlb_kernel_range(start,end) \
-do { flush_tsb_kernel_range(start,end); \
- __flush_tlb_kernel_range(start,end); \
-} while (0)
-
static inline void global_flush_tlb_page(struct mm_struct *mm, unsigned long vaddr)
{
__flush_tlb_page(CTX_HWBITS(mm->context), vaddr);
@@ -64,11 +61,6 @@ static inline void global_flush_tlb_page(struct mm_struct *mm, unsigned long vad
extern void smp_flush_tlb_kernel_range(unsigned long start, unsigned long end);
extern void smp_flush_tlb_page(struct mm_struct *mm, unsigned long vaddr);
-#define flush_tlb_kernel_range(start, end) \
-do { flush_tsb_kernel_range(start,end); \
- smp_flush_tlb_kernel_range(start, end); \
-} while (0)
-
#define global_flush_tlb_page(mm, vaddr) \
smp_flush_tlb_page(mm, vaddr)
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 77ad815..d2c5737 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -2440,3 +2440,26 @@ void __flush_tlb_all(void)
__asm__ __volatile__("wrpr %0, 0, %%pstate"
: : "r" (pstate));
}
+
+#ifdef CONFIG_SMP
+#define do_flush_tlb_kernel_range smp_flush_tlb_kernel_range
+#else
+#define do_flush_tlb_kernel_range __flush_tlb_kernel_range
+#endif
+
+void flush_tlb_kernel_range(unsigned long start, unsigned long end)
+{
+ if (start < HI_OBP_ADDRESS && end > LOW_OBP_ADDRESS) {
+ if (start < LOW_OBP_ADDRESS) {
+ flush_tsb_kernel_range(start, LOW_OBP_ADDRESS);
+ do_flush_tlb_kernel_range(start, LOW_OBP_ADDRESS);
+ }
+ if (end > HI_OBP_ADDRESS) {
+ flush_tsb_kernel_range(end, HI_OBP_ADDRESS);
+ do_flush_tlb_kernel_range(end, HI_OBP_ADDRESS);
+ }
+ } else {
+ flush_tsb_kernel_range(start, end);
+ do_flush_tlb_kernel_range(start, end);
+ }
+}
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 046/131] USB: serial: ftdi_sio: Add support for new Xsens devices
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (99 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 116/131] sparc64: Guard against flushing openfirmware mappings Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 007/131] [media] tda10071: force modulation to QPSK on DVB-S Ben Hutchings
` (31 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Patrick Riphagen, Greg Kroah-Hartman, Johan Hovold,
Frans Klaver
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Patrick Riphagen <patrick.riphagen@xsens.com>
commit 4bdcde358b4bda74e356841d351945ca3f2245dd upstream.
This adds support for new Xsens devices, using Xsens' own Vendor ID.
Signed-off-by: Patrick Riphagen <patrick.riphagen@xsens.com>
Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Cc: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/serial/ftdi_sio.c | 2 ++
drivers/usb/serial/ftdi_sio_ids.h | 3 +++
2 files changed, 5 insertions(+)
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -684,6 +684,8 @@ static struct usb_device_id id_table_com
{ USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) },
{ USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) },
{ USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) },
+ { USB_DEVICE(XSENS_VID, XSENS_CONVERTER_PID) },
+ { USB_DEVICE(XSENS_VID, XSENS_MTW_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_OMNI1509) },
{ USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) },
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -140,6 +140,9 @@
/*
* Xsens Technologies BV products (http://www.xsens.com).
*/
+#define XSENS_VID 0x2639
+#define XSENS_CONVERTER_PID 0xD00D /* Xsens USB-serial converter */
+#define XSENS_MTW_PID 0x0200 /* Xsens MTw */
#define XSENS_CONVERTER_0_PID 0xD388 /* Xsens USB converter */
#define XSENS_CONVERTER_1_PID 0xD389 /* Xsens Wireless Receiver */
#define XSENS_CONVERTER_2_PID 0xD38A
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 007/131] [media] tda10071: force modulation to QPSK on DVB-S
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (100 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 046/131] USB: serial: ftdi_sio: Add support for new Xsens devices Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 104/131] macvlan: Initialize vlan_features to turn on offload support Ben Hutchings
` (30 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Mauro Carvalho Chehab, Antti Palosaari
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Antti Palosaari <crope@iki.fi>
commit db4175ae2095634dbecd4c847da439f9c83e1b3b upstream.
Only supported modulation for DVB-S is QPSK. Modulation parameter
contains invalid value for DVB-S on some cases, which leads driver
refusing tuning attempt. Due to that, hard code modulation to QPSK
in case of DVB-S.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
[bwh: Backported to 3.2: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/media/dvb/frontends/tda10071.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/media/dvb/frontends/tda10071.c
+++ b/drivers/media/dvb/frontends/tda10071.c
@@ -644,6 +644,7 @@ static int tda10071_set_frontend(struct
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret, i;
u8 mode, rolloff, pilot, inversion, div;
+ fe_modulation_t modulation;
dbg("%s: delivery_system=%d modulation=%d frequency=%d " \
"symbol_rate=%d inversion=%d pilot=%d rolloff=%d", __func__,
@@ -677,10 +678,13 @@ static int tda10071_set_frontend(struct
switch (c->delivery_system) {
case SYS_DVBS:
+ modulation = QPSK;
rolloff = 0;
pilot = 2;
break;
case SYS_DVBS2:
+ modulation = c->modulation;
+
switch (c->rolloff) {
case ROLLOFF_20:
rolloff = 2;
@@ -722,7 +726,7 @@ static int tda10071_set_frontend(struct
for (i = 0, mode = 0xff; i < ARRAY_SIZE(TDA10071_MODCOD); i++) {
if (c->delivery_system == TDA10071_MODCOD[i].delivery_system &&
- c->modulation == TDA10071_MODCOD[i].modulation &&
+ modulation == TDA10071_MODCOD[i].modulation &&
c->fec_inner == TDA10071_MODCOD[i].fec) {
mode = TDA10071_MODCOD[i].val;
dbg("%s: mode found=%02x", __func__, mode);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 104/131] macvlan: Initialize vlan_features to turn on offload support.
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (101 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 007/131] [media] tda10071: force modulation to QPSK on DVB-S Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 082/131] HID: logitech: perform bounds checking on device_id early enough Ben Hutchings
` (29 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Vlad Yasevich, David S. Miller
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Vlad Yasevich <vyasevic@redhat.com>
[ Upstream commit 081e83a78db9b0ae1f5eabc2dedecc865f509b98 ]
Macvlan devices do not initialize vlan_features. As a result,
any vlan devices configured on top of macvlans perform very poorly.
Initialize vlan_features based on the vlan features of the lower-level
device.
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/net/macvlan.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index b74cdf6..fed39de 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -455,6 +455,7 @@ static int macvlan_init(struct net_device *dev)
(lowerdev->state & MACVLAN_STATE_MASK);
dev->features = lowerdev->features & MACVLAN_FEATURES;
dev->features |= NETIF_F_LLTX;
+ dev->vlan_features = lowerdev->vlan_features & MACVLAN_FEATURES;
dev->gso_max_size = lowerdev->gso_max_size;
dev->iflink = lowerdev->ifindex;
dev->hard_header_len = lowerdev->hard_header_len;
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 082/131] HID: logitech: perform bounds checking on device_id early enough
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (102 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 104/131] macvlan: Initialize vlan_features to turn on offload support Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 045/131] USB: serial: ftdi_sio: Annotate the current Xsens PID assignments Ben Hutchings
` (28 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Jiri Kosina, Benjamin Tissoires, Ben Hawkes
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Jiri Kosina <jkosina@suse.cz>
commit ad3e14d7c5268c2e24477c6ef54bbdf88add5d36 upstream.
device_index is a char type and the size of paired_dj_deivces is 7
elements, therefore proper bounds checking has to be applied to
device_index before it is used.
We are currently performing the bounds checking in
logi_dj_recv_add_djhid_device(), which is too late, as malicious device
could send REPORT_TYPE_NOTIF_DEVICE_UNPAIRED early enough and trigger the
problem in one of the report forwarding functions called from
logi_dj_raw_event().
Fix this by performing the check at the earliest possible ocasion in
logi_dj_raw_event().
Reported-by: Ben Hawkes <hawkes@google.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/hid/hid-logitech-dj.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
--- a/drivers/hid/hid-logitech-dj.c
+++ b/drivers/hid/hid-logitech-dj.c
@@ -230,13 +230,6 @@ static void logi_dj_recv_add_djhid_devic
return;
}
- if ((dj_report->device_index < DJ_DEVICE_INDEX_MIN) ||
- (dj_report->device_index > DJ_DEVICE_INDEX_MAX)) {
- dev_err(&djrcv_hdev->dev, "%s: invalid device index:%d\n",
- __func__, dj_report->device_index);
- return;
- }
-
if (djrcv_dev->paired_dj_devices[dj_report->device_index]) {
/* The device is already known. No need to reallocate it. */
dbg_hid("%s: device is already known\n", __func__);
@@ -713,6 +706,12 @@ static int logi_dj_raw_event(struct hid_
* device (via hid_input_report() ) and return 1 so hid-core does not do
* anything else with it.
*/
+ if ((dj_report->device_index < DJ_DEVICE_INDEX_MIN) ||
+ (dj_report->device_index > DJ_DEVICE_INDEX_MAX)) {
+ dev_err(&hdev->dev, "%s: invalid device index:%d\n",
+ __func__, dj_report->device_index);
+ return false;
+ }
spin_lock_irqsave(&djrcv_dev->lock, flags);
if (dj_report->report_id == REPORT_ID_DJ_SHORT) {
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 045/131] USB: serial: ftdi_sio: Annotate the current Xsens PID assignments
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (103 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 082/131] HID: logitech: perform bounds checking on device_id early enough Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 061/131] carl9170: fix sending URBs with wrong type when using full-speed Ben Hutchings
` (27 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Patrick Riphagen, Greg Kroah-Hartman, Frans Klaver,
Johan Hovold
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Patrick Riphagen <patrick.riphagen@xsens.com>
commit 9273b8a270878906540349422ab24558b9d65716 upstream.
The converters are used in specific products. It can be useful to know
which they are exactly.
Signed-off-by: Patrick Riphagen <patrick.riphagen@xsens.com>
Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Cc: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/serial/ftdi_sio_ids.h | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -140,12 +140,12 @@
/*
* Xsens Technologies BV products (http://www.xsens.com).
*/
-#define XSENS_CONVERTER_0_PID 0xD388
-#define XSENS_CONVERTER_1_PID 0xD389
+#define XSENS_CONVERTER_0_PID 0xD388 /* Xsens USB converter */
+#define XSENS_CONVERTER_1_PID 0xD389 /* Xsens Wireless Receiver */
#define XSENS_CONVERTER_2_PID 0xD38A
-#define XSENS_CONVERTER_3_PID 0xD38B
-#define XSENS_CONVERTER_4_PID 0xD38C
-#define XSENS_CONVERTER_5_PID 0xD38D
+#define XSENS_CONVERTER_3_PID 0xD38B /* Xsens USB-serial converter */
+#define XSENS_CONVERTER_4_PID 0xD38C /* Xsens Wireless Receiver */
+#define XSENS_CONVERTER_5_PID 0xD38D /* Xsens Awinda Station */
#define XSENS_CONVERTER_6_PID 0xD38E
#define XSENS_CONVERTER_7_PID 0xD38F
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 061/131] carl9170: fix sending URBs with wrong type when using full-speed
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (104 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 045/131] USB: serial: ftdi_sio: Annotate the current Xsens PID assignments Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 036/131] hwmon: (lm78) Fix overflow problems seen when writing large temperature limits Ben Hutchings
` (26 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Ronald Wahl, John W. Linville
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Ronald Wahl <ronald.wahl@raritan.com>
commit 671796dd96b6cd85b75fba9d3007bcf7e5f7c309 upstream.
The driver assumes that endpoint 4 is always an interrupt endpoint.
Unfortunately the type differs between high-speed and full-speed
configurations while in the former case it is indeed an interrupt
endpoint this is not true for the latter case - here it is a bulk
endpoint. When sending URBs with the wrong type the kernel will
generate a warning message including backtrace. In this specific
case there will be a huge amount of warnings which can bring the system
to freeze.
To fix this we are now sending URBs to endpoint 4 using the type
found in the endpoint descriptor.
A side note: The carl9170 firmware currently specifies endpoint 4 as
interrupt endpoint even in the full-speed configuration but this has
no relevance because before this firmware is loaded the endpoint type
is as described above and after the firmware is running the stick is not
reenumerated and so the old descriptor is used.
Signed-off-by: Ronald Wahl <ronald.wahl@raritan.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/net/wireless/ath/carl9170/carl9170.h | 1 +
drivers/net/wireless/ath/carl9170/usb.c | 31 ++++++++++++++++++++++++----
2 files changed, 28 insertions(+), 4 deletions(-)
--- a/drivers/net/wireless/ath/carl9170/carl9170.h
+++ b/drivers/net/wireless/ath/carl9170/carl9170.h
@@ -265,6 +265,7 @@ struct ar9170 {
atomic_t rx_work_urbs;
atomic_t rx_pool_urbs;
kernel_ulong_t features;
+ bool usb_ep_cmd_is_bulk;
/* firmware settings */
struct completion fw_load_wait;
--- a/drivers/net/wireless/ath/carl9170/usb.c
+++ b/drivers/net/wireless/ath/carl9170/usb.c
@@ -614,9 +614,16 @@ int __carl9170_exec_cmd(struct ar9170 *a
goto err_free;
}
- usb_fill_int_urb(urb, ar->udev, usb_sndintpipe(ar->udev,
- AR9170_USB_EP_CMD), cmd, cmd->hdr.len + 4,
- carl9170_usb_cmd_complete, ar, 1);
+ if (ar->usb_ep_cmd_is_bulk)
+ usb_fill_bulk_urb(urb, ar->udev,
+ usb_sndbulkpipe(ar->udev, AR9170_USB_EP_CMD),
+ cmd, cmd->hdr.len + 4,
+ carl9170_usb_cmd_complete, ar);
+ else
+ usb_fill_int_urb(urb, ar->udev,
+ usb_sndintpipe(ar->udev, AR9170_USB_EP_CMD),
+ cmd, cmd->hdr.len + 4,
+ carl9170_usb_cmd_complete, ar, 1);
if (free_buf)
urb->transfer_flags |= URB_FREE_BUFFER;
@@ -1025,9 +1032,10 @@ static void carl9170_usb_firmware_step2(
static int carl9170_usb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
+ struct usb_endpoint_descriptor *ep;
struct ar9170 *ar;
struct usb_device *udev;
- int err;
+ int i, err;
err = usb_reset_device(interface_to_usbdev(intf));
if (err)
@@ -1043,6 +1051,21 @@ static int carl9170_usb_probe(struct usb
ar->intf = intf;
ar->features = id->driver_info;
+ /* We need to remember the type of endpoint 4 because it differs
+ * between high- and full-speed configuration. The high-speed
+ * configuration specifies it as interrupt and the full-speed
+ * configuration as bulk endpoint. This information is required
+ * later when sending urbs to that endpoint.
+ */
+ for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; ++i) {
+ ep = &intf->cur_altsetting->endpoint[i].desc;
+
+ if (usb_endpoint_num(ep) == AR9170_USB_EP_CMD &&
+ usb_endpoint_dir_out(ep) &&
+ usb_endpoint_type(ep) == USB_ENDPOINT_XFER_BULK)
+ ar->usb_ep_cmd_is_bulk = true;
+ }
+
usb_set_intfdata(intf, ar);
SET_IEEE80211_DEV(ar->hw, &intf->dev);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 036/131] hwmon: (lm78) Fix overflow problems seen when writing large temperature limits
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (105 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 061/131] carl9170: fix sending URBs with wrong type when using full-speed Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 093/131] USB: serial: fix potential stack buffer overflow Ben Hutchings
` (25 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Guenter Roeck, Axel Lin
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
commit 1074d683a51f1aded3562add9ef313e75d557327 upstream.
On platforms with sizeof(int) < sizeof(long), writing a temperature
limit larger than MAXINT will result in unpredictable limit values
written to the chip. Avoid auto-conversion from long to int to fix
the problem.
Cc: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/hwmon/lm78.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/hwmon/lm78.c
+++ b/drivers/hwmon/lm78.c
@@ -102,7 +102,7 @@ static inline int FAN_FROM_REG(u8 val, i
/* TEMP: mC (-128C to +127C)
REG: 1C/bit, two's complement */
-static inline s8 TEMP_TO_REG(int val)
+static inline s8 TEMP_TO_REG(long val)
{
int nval = SENSORS_LIMIT(val, -128000, 127000) ;
return nval<0 ? (nval-500)/1000 : (nval+500)/1000;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 093/131] USB: serial: fix potential stack buffer overflow
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (106 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 036/131] hwmon: (lm78) Fix overflow problems seen when writing large temperature limits Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 031/131] mm, thp: do not allow thp faults to avoid cpuset restrictions Ben Hutchings
` (24 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Greg Kroah-Hartman, Johan Hovold
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <johan@kernel.org>
commit d979e9f9ecab04c1ecca741370e30a8a498893f5 upstream.
Make sure to verify the maximum number of endpoints per type to avoid
writing beyond the end of a stack-allocated array.
The current usb-serial implementation is limited to eight ports per
interface but failed to verify that the number of endpoints of a certain
type reported by a device did not exceed this limit.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/serial/usb-serial.c | 32 ++++++++++++++++++++++----------
1 file changed, 22 insertions(+), 10 deletions(-)
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -791,29 +791,39 @@ int usb_serial_probe(struct usb_interfac
if (usb_endpoint_is_bulk_in(endpoint)) {
/* we found a bulk in endpoint */
dbg("found bulk in on endpoint %d", i);
- bulk_in_endpoint[num_bulk_in] = endpoint;
- ++num_bulk_in;
+ if (num_bulk_in < MAX_NUM_PORTS) {
+ bulk_in_endpoint[num_bulk_in] = endpoint;
+ ++num_bulk_in;
+ }
}
if (usb_endpoint_is_bulk_out(endpoint)) {
/* we found a bulk out endpoint */
dbg("found bulk out on endpoint %d", i);
- bulk_out_endpoint[num_bulk_out] = endpoint;
- ++num_bulk_out;
+ if (num_bulk_out < MAX_NUM_PORTS) {
+ bulk_out_endpoint[num_bulk_out] = endpoint;
+ ++num_bulk_out;
+ }
}
if (usb_endpoint_is_int_in(endpoint)) {
/* we found a interrupt in endpoint */
dbg("found interrupt in on endpoint %d", i);
- interrupt_in_endpoint[num_interrupt_in] = endpoint;
- ++num_interrupt_in;
+ if (num_interrupt_in < MAX_NUM_PORTS) {
+ interrupt_in_endpoint[num_interrupt_in] =
+ endpoint;
+ ++num_interrupt_in;
+ }
}
if (usb_endpoint_is_int_out(endpoint)) {
/* we found an interrupt out endpoint */
dbg("found interrupt out on endpoint %d", i);
- interrupt_out_endpoint[num_interrupt_out] = endpoint;
- ++num_interrupt_out;
+ if (num_interrupt_out < MAX_NUM_PORTS) {
+ interrupt_out_endpoint[num_interrupt_out] =
+ endpoint;
+ ++num_interrupt_out;
+ }
}
}
@@ -836,8 +846,10 @@ int usb_serial_probe(struct usb_interfac
if (usb_endpoint_is_int_in(endpoint)) {
/* we found a interrupt in endpoint */
dbg("found interrupt in for Prolific device on separate interface");
- interrupt_in_endpoint[num_interrupt_in] = endpoint;
- ++num_interrupt_in;
+ if (num_interrupt_in < MAX_NUM_PORTS) {
+ interrupt_in_endpoint[num_interrupt_in] = endpoint;
+ ++num_interrupt_in;
+ }
}
}
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 031/131] mm, thp: do not allow thp faults to avoid cpuset restrictions
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (107 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 093/131] USB: serial: fix potential stack buffer overflow Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 088/131] NFSv4: Fix problems with close in the presence of a delegation Ben Hutchings
` (23 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Alex Thorlton, Hugh Dickins, Kirill A. Shutemov,
Dave Hansen, David Rientjes, Mel Gorman, Bob Liu, Hedi Berriche,
Srivatsa S. Bhat, Johannes Weiner, Rik van Riel, Linus Torvalds
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: David Rientjes <rientjes@google.com>
commit b104a35d32025ca740539db2808aa3385d0f30eb upstream.
The page allocator relies on __GFP_WAIT to determine if ALLOC_CPUSET
should be set in allocflags. ALLOC_CPUSET controls if a page allocation
should be restricted only to the set of allowed cpuset mems.
Transparent hugepages clears __GFP_WAIT when defrag is disabled to prevent
the fault path from using memory compaction or direct reclaim. Thus, it
is unfairly able to allocate outside of its cpuset mems restriction as a
side-effect.
This patch ensures that ALLOC_CPUSET is only cleared when the gfp mask is
truly GFP_ATOMIC by verifying it is also not a thp allocation.
Signed-off-by: David Rientjes <rientjes@google.com>
Reported-by: Alex Thorlton <athorlton@sgi.com>
Tested-by: Alex Thorlton <athorlton@sgi.com>
Cc: Bob Liu <lliubbo@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Hedi Berriche <hedi@sgi.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
mm/page_alloc.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2054,7 +2054,7 @@ static inline int
gfp_to_alloc_flags(gfp_t gfp_mask)
{
int alloc_flags = ALLOC_WMARK_MIN | ALLOC_CPUSET;
- const gfp_t wait = gfp_mask & __GFP_WAIT;
+ const bool atomic = !(gfp_mask & (__GFP_WAIT | __GFP_NO_KSWAPD));
/* __GFP_HIGH is assumed to be the same as ALLOC_HIGH to save a branch. */
BUILD_BUG_ON(__GFP_HIGH != (__force gfp_t) ALLOC_HIGH);
@@ -2063,20 +2063,20 @@ gfp_to_alloc_flags(gfp_t gfp_mask)
* The caller may dip into page reserves a bit more if the caller
* cannot run direct reclaim, or if the caller has realtime scheduling
* policy or is asking for __GFP_HIGH memory. GFP_ATOMIC requests will
- * set both ALLOC_HARDER (!wait) and ALLOC_HIGH (__GFP_HIGH).
+ * set both ALLOC_HARDER (atomic == true) and ALLOC_HIGH (__GFP_HIGH).
*/
alloc_flags |= (__force int) (gfp_mask & __GFP_HIGH);
- if (!wait) {
+ if (atomic) {
/*
- * Not worth trying to allocate harder for
- * __GFP_NOMEMALLOC even if it can't schedule.
+ * Not worth trying to allocate harder for __GFP_NOMEMALLOC even
+ * if it can't schedule.
*/
- if (!(gfp_mask & __GFP_NOMEMALLOC))
+ if (!(gfp_mask & __GFP_NOMEMALLOC))
alloc_flags |= ALLOC_HARDER;
/*
- * Ignore cpuset if GFP_ATOMIC (!wait) rather than fail alloc.
- * See also cpuset_zone_allowed() comment in kernel/cpuset.c.
+ * Ignore cpuset mems for GFP_ATOMIC rather than fail, see the
+ * comment for __cpuset_node_allowed_softwall().
*/
alloc_flags &= ~ALLOC_CPUSET;
} else if (unlikely(rt_task(current)) && !in_interrupt())
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 088/131] NFSv4: Fix problems with close in the presence of a delegation
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (108 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 031/131] mm, thp: do not allow thp faults to avoid cpuset restrictions Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 037/131] hwmon: (amc6821) Fix return value Ben Hutchings
` (22 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Trond Myklebust, James Drews
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Trond Myklebust <trond.myklebust@primarydata.com>
commit aee7af356e151494d5014f57b33460b162f181b5 upstream.
In the presence of delegations, we can no longer assume that the
state->n_rdwr, state->n_rdonly, state->n_wronly reflect the open
stateid share mode, and so we need to calculate the initial value
for calldata->arg.fmode using the state->flags.
Reported-by: James Drews <drews@engr.wisc.edu>
Fixes: 88069f77e1ac5 (NFSv41: Fix a potential state leakage when...)
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
fs/nfs/nfs4proc.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2004,24 +2004,31 @@ static void nfs4_close_prepare(struct rp
{
struct nfs4_closedata *calldata = data;
struct nfs4_state *state = calldata->state;
+ bool is_rdonly, is_wronly, is_rdwr;
int call_close = 0;
if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
return;
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.fmode = FMODE_READ|FMODE_WRITE;
spin_lock(&state->owner->so_lock);
+ is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags);
+ is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags);
+ is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags);
+ /* Calculate the current open share mode */
+ calldata->arg.fmode = 0;
+ if (is_rdonly || is_rdwr)
+ calldata->arg.fmode |= FMODE_READ;
+ if (is_wronly || is_rdwr)
+ calldata->arg.fmode |= FMODE_WRITE;
/* Calculate the change in open mode */
if (state->n_rdwr == 0) {
if (state->n_rdonly == 0) {
- call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags);
- call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
+ call_close |= is_rdonly || is_rdwr;
calldata->arg.fmode &= ~FMODE_READ;
}
if (state->n_wronly == 0) {
- call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags);
- call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
+ call_close |= is_wronly || is_rdwr;
calldata->arg.fmode &= ~FMODE_WRITE;
}
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 037/131] hwmon: (amc6821) Fix return value
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (109 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 088/131] NFSv4: Fix problems with close in the presence of a delegation Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 089/131] HID: magicmouse: sanity check report size in raw_event() callback Ben Hutchings
` (21 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Sachin Kamat, T. Mertelj, Guenter Roeck
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Sachin Kamat <sachin.kamat@linaro.org>
commit 3499e5b2e14b792fe411302fea3b6fcc4ba40ef2 upstream.
Propagate return value obtained from i2c_smbus_read_byte_data()
instead of hardcoding.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: T. Mertelj <tomaz.mertelj@guest.arnes.si>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/hwmon/amc6821.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/hwmon/amc6821.c
+++ b/drivers/hwmon/amc6821.c
@@ -364,7 +364,7 @@ static ssize_t set_pwm1_enable(
if (config < 0) {
dev_err(&client->dev,
"Error reading configuration register, aborting.\n");
- return -EIO;
+ return config;
}
switch (val) {
@@ -673,7 +673,7 @@ static ssize_t set_fan1_div(
if (config < 0) {
dev_err(&client->dev,
"Error reading configuration register, aborting.\n");
- return -EIO;
+ return config;
}
mutex_lock(&data->update_lock);
switch (val) {
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 089/131] HID: magicmouse: sanity check report size in raw_event() callback
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (110 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 037/131] hwmon: (amc6821) Fix return value Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 066/131] Btrfs: fix csum tree corruption, duplicate and outdated checksums Ben Hutchings
` (20 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Jiri Kosina, Steven Vittitoe
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Jiri Kosina <jkosina@suse.cz>
commit c54def7bd64d7c0b6993336abcffb8444795bf38 upstream.
The report passed to us from transport driver could potentially be
arbitrarily large, therefore we better sanity-check it so that
magicmouse_emit_touch() gets only valid values of raw_id.
Reported-by: Steven Vittitoe <scvitti@google.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/hid/hid-magicmouse.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/hid/hid-magicmouse.c
+++ b/drivers/hid/hid-magicmouse.c
@@ -308,6 +308,11 @@ static int magicmouse_raw_event(struct h
if (size < 4 || ((size - 4) % 9) != 0)
return 0;
npoints = (size - 4) / 9;
+ if (npoints > 15) {
+ hid_warn(hdev, "invalid size value (%d) for TRACKPAD_REPORT_ID\n",
+ size);
+ return 0;
+ }
msc->ntouches = 0;
for (ii = 0; ii < npoints; ii++)
magicmouse_emit_touch(msc, ii, data + ii * 9 + 4);
@@ -331,6 +336,11 @@ static int magicmouse_raw_event(struct h
if (size < 6 || ((size - 6) % 8) != 0)
return 0;
npoints = (size - 6) / 8;
+ if (npoints > 15) {
+ hid_warn(hdev, "invalid size value (%d) for MOUSE_REPORT_ID\n",
+ size);
+ return 0;
+ }
msc->ntouches = 0;
for (ii = 0; ii < npoints; ii++)
magicmouse_emit_touch(msc, ii, data + ii * 8 + 6);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 066/131] Btrfs: fix csum tree corruption, duplicate and outdated checksums
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (111 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 089/131] HID: magicmouse: sanity check report size in raw_event() callback Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 067/131] ALSA: hda/realtek - Avoid setting wrong COEF on ALC269 & co Ben Hutchings
` (19 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Filipe Manana, Chris Mason
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Filipe Manana <fdmanana@suse.com>
commit 27b9a8122ff71a8cadfbffb9c4f0694300464f3b upstream.
Under rare circumstances we can end up leaving 2 versions of a checksum
for the same file extent range.
The reason for this is that after calling btrfs_next_leaf we process
slot 0 of the leaf it returns, instead of processing the slot set in
path->slots[0]. Most of the time (by far) path->slots[0] is 0, but after
btrfs_next_leaf() releases the path and before it searches for the next
leaf, another task might cause a split of the next leaf, which migrates
some of its keys to the leaf we were processing before calling
btrfs_next_leaf(). In this case btrfs_next_leaf() returns again the
same leaf but with path->slots[0] having a slot number corresponding
to the first new key it got, that is, a slot number that didn't exist
before calling btrfs_next_leaf(), as the leaf now has more keys than
it had before. So we must really process the returned leaf starting at
path->slots[0] always, as it isn't always 0, and the key at slot 0 can
have an offset much lower than our search offset/bytenr.
For example, consider the following scenario, where we have:
sums->bytenr: 40157184, sums->len: 16384, sums end: 40173568
four 4kb file data blocks with offsets 40157184, 40161280, 40165376, 40169472
Leaf N:
slot = 0 slot = btrfs_header_nritems() - 1
|-------------------------------------------------------------------|
| [(CSUM CSUM 39239680), size 8] ... [(CSUM CSUM 40116224), size 4] |
|-------------------------------------------------------------------|
Leaf N + 1:
slot = 0 slot = btrfs_header_nritems() - 1
|--------------------------------------------------------------------|
| [(CSUM CSUM 40161280), size 32] ... [((CSUM CSUM 40615936), size 8 |
|--------------------------------------------------------------------|
Because we are at the last slot of leaf N, we call btrfs_next_leaf() to
find the next highest key, which releases the current path and then searches
for that next key. However after releasing the path and before finding that
next key, the item at slot 0 of leaf N + 1 gets moved to leaf N, due to a call
to ctree.c:push_leaf_left() (via ctree.c:split_leaf()), and therefore
btrfs_next_leaf() will returns us a path again with leaf N but with the slot
pointing to its new last key (CSUM CSUM 40161280). This new version of leaf N
is then:
slot = 0 slot = btrfs_header_nritems() - 2 slot = btrfs_header_nritems() - 1
|----------------------------------------------------------------------------------------------------|
| [(CSUM CSUM 39239680), size 8] ... [(CSUM CSUM 40116224), size 4] [(CSUM CSUM 40161280), size 32] |
|----------------------------------------------------------------------------------------------------|
And incorrecly using slot 0, makes us set next_offset to 39239680 and we jump
into the "insert:" label, which will set tmp to:
tmp = min((sums->len - total_bytes) >> blocksize_bits,
(next_offset - file_key.offset) >> blocksize_bits) =
min((16384 - 0) >> 12, (39239680 - 40157184) >> 12) =
min(4, (u64)-917504 = 18446744073708634112 >> 12) = 4
and
ins_size = csum_size * tmp = 4 * 4 = 16 bytes.
In other words, we insert a new csum item in the tree with key
(CSUM_OBJECTID CSUM_KEY 40157184 = sums->bytenr) that contains the checksums
for all the data (4 blocks of 4096 bytes each = sums->len). Which is wrong,
because the item with key (CSUM CSUM 40161280) (the one that was moved from
leaf N + 1 to the end of leaf N) contains the old checksums of the last 12288
bytes of our data and won't get those old checksums removed.
So this leaves us 2 different checksums for 3 4kb blocks of data in the tree,
and breaks the logical rule:
Key_N+1.offset >= Key_N.offset + length_of_data_its_checksums_cover
An obvious bad effect of this is that a subsequent csum tree lookup to get
the checksum of any of the blocks with logical offset of 40161280, 40165376
or 40169472 (the last 3 4kb blocks of file data), will get the old checksums.
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
fs/btrfs/file-item.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -717,7 +717,7 @@ again:
found_next = 1;
if (ret != 0)
goto insert;
- slot = 0;
+ slot = path->slots[0];
}
btrfs_item_key_to_cpu(path->nodes[0], &found_key, slot);
if (found_key.objectid != BTRFS_EXTENT_CSUM_OBJECTID ||
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 067/131] ALSA: hda/realtek - Avoid setting wrong COEF on ALC269 & co
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (112 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 066/131] Btrfs: fix csum tree corruption, duplicate and outdated checksums Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 021/131] bfa: Fix undefined bit shift on big-endian architectures with 32-bit DMA address Ben Hutchings
` (18 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Francesco Muzio, Takashi Iwai
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Takashi Iwai <tiwai@suse.de>
commit f3ee07d8b6e061bf34a7167c3f564e8da4360a99 upstream.
ALC269 & co have many vendor-specific setups with COEF verbs.
However, some verbs seem specific to some codec versions and they
result in the codec stalling. Typically, such a case can be avoided
by checking the return value from reading a COEF. If the return value
is -1, it implies that the COEF is invalid, thus it shouldn't be
written.
This patch adds the invalid COEF checks in appropriate places
accessing ALC269 and its variants. The patch actually fixes the
resume problem on Acer AO725 laptop.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=52181
Tested-by: Francesco Muzio <muziofg@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
sound/pci/hda/patch_realtek.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -436,6 +436,8 @@ static void alc_fix_pll(struct hda_codec
spec->pll_coef_idx);
val = snd_hda_codec_read(codec, spec->pll_nid, 0,
AC_VERB_GET_PROC_COEF, 0);
+ if (val == -1)
+ return;
snd_hda_codec_write(codec, spec->pll_nid, 0, AC_VERB_SET_COEF_INDEX,
spec->pll_coef_idx);
snd_hda_codec_write(codec, spec->pll_nid, 0, AC_VERB_SET_PROC_COEF,
@@ -4773,6 +4775,8 @@ static int alc269_parse_auto_config(stru
static void alc269_toggle_power_output(struct hda_codec *codec, int power_up)
{
int val = alc_read_coef_idx(codec, 0x04);
+ if (val == -1)
+ return;
if (power_up)
val |= 1 << 11;
else
@@ -5184,27 +5188,30 @@ static int alc269_fill_coef(struct hda_c
if ((alc_get_coef0(codec) & 0x00ff) == 0x017) {
val = alc_read_coef_idx(codec, 0x04);
/* Power up output pin */
- alc_write_coef_idx(codec, 0x04, val | (1<<11));
+ if (val != -1)
+ alc_write_coef_idx(codec, 0x04, val | (1<<11));
}
if ((alc_get_coef0(codec) & 0x00ff) == 0x018) {
val = alc_read_coef_idx(codec, 0xd);
- if ((val & 0x0c00) >> 10 != 0x1) {
+ if (val != -1 && (val & 0x0c00) >> 10 != 0x1) {
/* Capless ramp up clock control */
alc_write_coef_idx(codec, 0xd, val | (1<<10));
}
val = alc_read_coef_idx(codec, 0x17);
- if ((val & 0x01c0) >> 6 != 0x4) {
+ if (val != -1 && (val & 0x01c0) >> 6 != 0x4) {
/* Class D power on reset */
alc_write_coef_idx(codec, 0x17, val | (1<<7));
}
}
val = alc_read_coef_idx(codec, 0xd); /* Class D */
- alc_write_coef_idx(codec, 0xd, val | (1<<14));
+ if (val != -1)
+ alc_write_coef_idx(codec, 0xd, val | (1<<14));
val = alc_read_coef_idx(codec, 0x4); /* HP */
- alc_write_coef_idx(codec, 0x4, val | (1<<11));
+ if (val != -1)
+ alc_write_coef_idx(codec, 0x4, val | (1<<11));
return 0;
}
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 021/131] bfa: Fix undefined bit shift on big-endian architectures with 32-bit DMA address
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (113 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 067/131] ALSA: hda/realtek - Avoid setting wrong COEF on ALC269 & co Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 101/131] tcp: Fix integer-overflows in TCP veno Ben Hutchings
` (17 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Anil Gurumurthy, Christoph Hellwig, Martin K. Petersen
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Ben Hutchings <ben@decadent.org.uk>
commit 03a6c3ff3282ee9fa893089304d951e0be93a144 upstream.
bfa_swap_words() shifts its argument (assumed to be 64-bit) by 32 bits
each way. In two places the argument type is dma_addr_t, which may be
32-bit, in which case the effect of the bit shift is undefined:
drivers/scsi/bfa/bfa_fcpim.c: In function 'bfa_ioim_send_ioreq':
drivers/scsi/bfa/bfa_fcpim.c:2497:4: warning: left shift count >= width of type [enabled by default]
addr = bfa_sgaddr_le(sg_dma_address(sg));
^
drivers/scsi/bfa/bfa_fcpim.c:2497:4: warning: right shift count >= width of type [enabled by default]
drivers/scsi/bfa/bfa_fcpim.c:2509:4: warning: left shift count >= width of type [enabled by default]
addr = bfa_sgaddr_le(sg_dma_address(sg));
^
drivers/scsi/bfa/bfa_fcpim.c:2509:4: warning: right shift count >= width of type [enabled by default]
Avoid this by adding casts to u64 in bfa_swap_words().
Compile-tested only.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Anil Gurumurthy <anil.gurumurthy@qlogic.com>
Fixes: f16a17507b09 ('[SCSI] bfa: remove all OS wrappers')
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/scsi/bfa/bfa_ioc.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/scsi/bfa/bfa_ioc.h
+++ b/drivers/scsi/bfa/bfa_ioc.h
@@ -72,7 +72,7 @@ struct bfa_sge_s {
} while (0)
#define bfa_swap_words(_x) ( \
- ((_x) << 32) | ((_x) >> 32))
+ ((u64)(_x) << 32) | ((u64)(_x) >> 32))
#ifdef __BIG_ENDIAN
#define bfa_sge_to_be(_x)
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 101/131] tcp: Fix integer-overflows in TCP veno
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (114 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 021/131] bfa: Fix undefined bit shift on big-endian architectures with 32-bit DMA address Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 065/131] ASoC: pxa-ssp: drop SNDRV_PCM_FMTBIT_S24_LE Ben Hutchings
` (16 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, David S. Miller, Christoph Paasch
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Christoph Paasch <christoph.paasch@uclouvain.be>
[ Upstream commit 45a07695bc64b3ab5d6d2215f9677e5b8c05a7d0 ]
In veno we do a multiplication of the cwnd and the rtt. This
may overflow and thus their result is stored in a u64. However, we first
need to cast the cwnd so that actually 64-bit arithmetic is done.
A first attempt at fixing 76f1017757aa0 ([TCP]: TCP Veno congestion
control) was made by 159131149c2 (tcp: Overflow bug in Vegas), but it
failed to add the required cast in tcp_veno_cong_avoid().
Fixes: 76f1017757aa0 ([TCP]: TCP Veno congestion control)
Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
net/ipv4/tcp_veno.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/tcp_veno.c b/net/ipv4/tcp_veno.c
index ac43cd7..b4d1858 100644
--- a/net/ipv4/tcp_veno.c
+++ b/net/ipv4/tcp_veno.c
@@ -144,7 +144,7 @@ static void tcp_veno_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
rtt = veno->minrtt;
- target_cwnd = (tp->snd_cwnd * veno->basertt);
+ target_cwnd = (u64)tp->snd_cwnd * veno->basertt;
target_cwnd <<= V_PARAM_SHIFT;
do_div(target_cwnd, rtt);
^ permalink raw reply related [flat|nested] 139+ messages in thread* [PATCH 3.2 065/131] ASoC: pxa-ssp: drop SNDRV_PCM_FMTBIT_S24_LE
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (115 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 101/131] tcp: Fix integer-overflows in TCP veno Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 083/131] HID: fix a couple of off-by-ones Ben Hutchings
` (15 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Johannes Stezenbach, Mark Brown, Daniel Mack
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Daniel Mack <zonque@gmail.com>
commit 9301503af016eb537ccce76adec0c1bb5c84871e upstream.
This mode is unsupported, as the DMA controller can't do zero-padding
of samples.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Reported-by: Johannes Stezenbach <js@sig21.net>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
sound/soc/pxa/pxa-ssp.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--- a/sound/soc/pxa/pxa-ssp.c
+++ b/sound/soc/pxa/pxa-ssp.c
@@ -778,9 +778,7 @@ static int pxa_ssp_remove(struct snd_soc
SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \
SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
-#define PXA_SSP_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
- SNDRV_PCM_FMTBIT_S24_LE | \
- SNDRV_PCM_FMTBIT_S32_LE)
+#define PXA_SSP_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE)
static struct snd_soc_dai_ops pxa_ssp_dai_ops = {
.startup = pxa_ssp_startup,
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 083/131] HID: fix a couple of off-by-ones
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (116 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 065/131] ASoC: pxa-ssp: drop SNDRV_PCM_FMTBIT_S24_LE Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 105/131] net: Correctly set segment mac_len in skb_segment() Ben Hutchings
` (14 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Ben Hawkes, Benjamin Tissoires, Jiri Kosina
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Jiri Kosina <jkosina@suse.cz>
commit 4ab25786c87eb20857bbb715c3ae34ec8fd6a214 upstream.
There are a few very theoretical off-by-one bugs in report descriptor size
checking when performing a pre-parsing fixup. Fix those.
Reported-by: Ben Hawkes <hawkes@google.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/hid/hid-cherry.c | 2 +-
drivers/hid/hid-kye.c | 2 +-
drivers/hid/hid-lg.c | 4 ++--
drivers/hid/hid-monterey.c | 2 +-
drivers/hid/hid-petalynx.c | 2 +-
drivers/hid/hid-sunplus.c | 2 +-
6 files changed, 7 insertions(+), 7 deletions(-)
--- a/drivers/hid/hid-cherry.c
+++ b/drivers/hid/hid-cherry.c
@@ -29,7 +29,7 @@
static __u8 *ch_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
- if (*rsize >= 17 && rdesc[11] == 0x3c && rdesc[12] == 0x02) {
+ if (*rsize >= 18 && rdesc[11] == 0x3c && rdesc[12] == 0x02) {
hid_info(hdev, "fixing up Cherry Cymotion report descriptor\n");
rdesc[11] = rdesc[16] = 0xff;
rdesc[12] = rdesc[17] = 0x03;
--- a/drivers/hid/hid-kye.c
+++ b/drivers/hid/hid-kye.c
@@ -26,7 +26,7 @@
static __u8 *kye_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
- if (*rsize >= 74 &&
+ if (*rsize >= 75 &&
rdesc[61] == 0x05 && rdesc[62] == 0x08 &&
rdesc[63] == 0x19 && rdesc[64] == 0x08 &&
rdesc[65] == 0x29 && rdesc[66] == 0x0f &&
--- a/drivers/hid/hid-lg.c
+++ b/drivers/hid/hid-lg.c
@@ -111,14 +111,14 @@ static __u8 *lg_report_fixup(struct hid_
{
unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
- if ((quirks & LG_RDESC) && *rsize >= 90 && rdesc[83] == 0x26 &&
+ if ((quirks & LG_RDESC) && *rsize >= 91 && rdesc[83] == 0x26 &&
rdesc[84] == 0x8c && rdesc[85] == 0x02) {
hid_info(hdev,
"fixing up Logitech keyboard report descriptor\n");
rdesc[84] = rdesc[89] = 0x4d;
rdesc[85] = rdesc[90] = 0x10;
}
- if ((quirks & LG_RDESC_REL_ABS) && *rsize >= 50 &&
+ if ((quirks & LG_RDESC_REL_ABS) && *rsize >= 51 &&
rdesc[32] == 0x81 && rdesc[33] == 0x06 &&
rdesc[49] == 0x81 && rdesc[50] == 0x06) {
hid_info(hdev,
--- a/drivers/hid/hid-monterey.c
+++ b/drivers/hid/hid-monterey.c
@@ -25,7 +25,7 @@
static __u8 *mr_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
- if (*rsize >= 30 && rdesc[29] == 0x05 && rdesc[30] == 0x09) {
+ if (*rsize >= 31 && rdesc[29] == 0x05 && rdesc[30] == 0x09) {
hid_info(hdev, "fixing up button/consumer in HID report descriptor\n");
rdesc[30] = 0x0c;
}
--- a/drivers/hid/hid-petalynx.c
+++ b/drivers/hid/hid-petalynx.c
@@ -26,7 +26,7 @@
static __u8 *pl_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
- if (*rsize >= 60 && rdesc[39] == 0x2a && rdesc[40] == 0xf5 &&
+ if (*rsize >= 62 && rdesc[39] == 0x2a && rdesc[40] == 0xf5 &&
rdesc[41] == 0x00 && rdesc[59] == 0x26 &&
rdesc[60] == 0xf9 && rdesc[61] == 0x00) {
hid_info(hdev, "fixing up Petalynx Maxter Remote report descriptor\n");
--- a/drivers/hid/hid-sunplus.c
+++ b/drivers/hid/hid-sunplus.c
@@ -25,7 +25,7 @@
static __u8 *sp_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
- if (*rsize >= 107 && rdesc[104] == 0x26 && rdesc[105] == 0x80 &&
+ if (*rsize >= 112 && rdesc[104] == 0x26 && rdesc[105] == 0x80 &&
rdesc[106] == 0x03) {
hid_info(hdev, "fixing up Sunplus Wireless Desktop report descriptor\n");
rdesc[105] = rdesc[110] = 0x03;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 105/131] net: Correctly set segment mac_len in skb_segment().
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (117 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 083/131] HID: fix a couple of off-by-ones Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:48 ` Vlad Yasevich
2014-09-11 12:32 ` [PATCH 3.2 059/131] ring-buffer: Always reset iterator to reader page Ben Hutchings
` (13 subsequent siblings)
132 siblings, 1 reply; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Vlad Yasevich, Eric Dumazet, David S. Miller
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Vlad Yasevich <vyasevic@redhat.com>
[ Upstream commit fcdfe3a7fa4cb74391d42b6a26dc07c20dab1d82 ]
When performing segmentation, the mac_len value is copied right
out of the original skb. However, this value is not always set correctly
(like when the packet is VLAN-tagged) and we'll end up copying a bad
value.
One way to demonstrate this is to configure a VM which tags
packets internally and turn off VLAN acceleration on the forwarding
bridge port. The packets show up corrupt like this:
16:18:24.985548 52:54:00:ab:be:25 > 52:54:00:26:ce:a3, ethertype 802.1Q
(0x8100), length 1518: vlan 100, p 0, ethertype 0x05e0,
0x0000: 8cdb 1c7c 8cdb 0064 4006 b59d 0a00 6402 ...|...d@.....d.
0x0010: 0a00 6401 9e0d b441 0a5e 64ec 0330 14fa ..d....A.^d..0..
0x0020: 29e3 01c9 f871 0000 0101 080a 000a e833)....q.........3
0x0030: 000f 8c75 6e65 7470 6572 6600 6e65 7470 ...unetperf.netp
0x0040: 6572 6600 6e65 7470 6572 6600 6e65 7470 erf.netperf.netp
0x0050: 6572 6600 6e65 7470 6572 6600 6e65 7470 erf.netperf.netp
0x0060: 6572 6600 6e65 7470 6572 6600 6e65 7470 erf.netperf.netp
...
This also leads to awful throughput as GSO packets are dropped and
cause retransmissions.
The solution is to set the mac_len using the values already available
in then new skb. We've already adjusted all of the header offset, so we
might as well correctly figure out the mac_len using skb_reset_mac_len().
After this change, packets are segmented correctly and performance
is restored.
CC: Eric Dumazet <edumazet@google.com>
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
net/core/skbuff.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 7121d9b..0ccfb53 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2669,7 +2669,6 @@ struct sk_buff *skb_segment(struct sk_buff *skb, u32 features)
tail = nskb;
__copy_skb_header(nskb, skb);
- nskb->mac_len = skb->mac_len;
/* nskb and skb might have different headroom */
if (nskb->ip_summed == CHECKSUM_PARTIAL)
@@ -2679,6 +2678,7 @@ struct sk_buff *skb_segment(struct sk_buff *skb, u32 features)
skb_set_network_header(nskb, skb->mac_len);
nskb->transport_header = (nskb->network_header +
skb_network_header_len(skb));
+ skb_reset_mac_len(nskb);
skb_copy_from_linear_data(skb, nskb->data, doffset);
if (fskb != skb_shinfo(skb)->frag_list)
^ permalink raw reply related [flat|nested] 139+ messages in thread* Re: [PATCH 3.2 105/131] net: Correctly set segment mac_len in skb_segment().
2014-09-11 12:32 ` [PATCH 3.2 105/131] net: Correctly set segment mac_len in skb_segment() Ben Hutchings
@ 2014-09-11 12:48 ` Vlad Yasevich
2014-09-13 22:38 ` Ben Hutchings
0 siblings, 1 reply; 139+ messages in thread
From: Vlad Yasevich @ 2014-09-11 12:48 UTC (permalink / raw)
To: Ben Hutchings, linux-kernel, stable; +Cc: akpm, Eric Dumazet, David S. Miller
On 09/11/2014 08:32 AM, Ben Hutchings wrote:
> 3.2.63-rc1 review patch. If anyone has any objections, please let me know.
>
> ------------------
>
> From: Vlad Yasevich <vyasevic@redhat.com>
>
> [ Upstream commit fcdfe3a7fa4cb74391d42b6a26dc07c20dab1d82 ]
>
> When performing segmentation, the mac_len value is copied right
> out of the original skb. However, this value is not always set correctly
> (like when the packet is VLAN-tagged) and we'll end up copying a bad
> value.
>
> One way to demonstrate this is to configure a VM which tags
> packets internally and turn off VLAN acceleration on the forwarding
> bridge port. The packets show up corrupt like this:
> 16:18:24.985548 52:54:00:ab:be:25 > 52:54:00:26:ce:a3, ethertype 802.1Q
> (0x8100), length 1518: vlan 100, p 0, ethertype 0x05e0,
> 0x0000: 8cdb 1c7c 8cdb 0064 4006 b59d 0a00 6402 ...|...d@.....d.
> 0x0010: 0a00 6401 9e0d b441 0a5e 64ec 0330 14fa ..d....A.^d..0..
> 0x0020: 29e3 01c9 f871 0000 0101 080a 000a e833)....q.........3
> 0x0030: 000f 8c75 6e65 7470 6572 6600 6e65 7470 ...unetperf.netp
> 0x0040: 6572 6600 6e65 7470 6572 6600 6e65 7470 erf.netperf.netp
> 0x0050: 6572 6600 6e65 7470 6572 6600 6e65 7470 erf.netperf.netp
> 0x0060: 6572 6600 6e65 7470 6572 6600 6e65 7470 erf.netperf.netp
> ...
>
> This also leads to awful throughput as GSO packets are dropped and
> cause retransmissions.
>
> The solution is to set the mac_len using the values already available
> in then new skb. We've already adjusted all of the header offset, so we
> might as well correctly figure out the mac_len using skb_reset_mac_len().
> After this change, packets are segmented correctly and performance
> is restored.
>
> CC: Eric Dumazet <edumazet@google.com>
> Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
> Signed-off-by: David S. Miller <davem@davemloft.net>
> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
> ---
> net/core/skbuff.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/net/core/skbuff.c b/net/core/skbuff.c
> index 7121d9b..0ccfb53 100644
> --- a/net/core/skbuff.c
> +++ b/net/core/skbuff.c
> @@ -2669,7 +2669,6 @@ struct sk_buff *skb_segment(struct sk_buff *skb, u32 features)
> tail = nskb;
>
> __copy_skb_header(nskb, skb);
> - nskb->mac_len = skb->mac_len;
>
> /* nskb and skb might have different headroom */
> if (nskb->ip_summed == CHECKSUM_PARTIAL)
> @@ -2679,6 +2678,7 @@ struct sk_buff *skb_segment(struct sk_buff *skb, u32 features)
> skb_set_network_header(nskb, skb->mac_len);
> nskb->transport_header = (nskb->network_header +
> skb_network_header_len(skb));
> + skb_reset_mac_len(nskb);
This will not fix the problem here because the network header above will
already be set incorrectly based on the old mac_len.
This patch depends on
commit 030737bcc3c404e273e97dbe06fe9561699a411b
Author: Eric Dumazet <edumazet@google.com>
Date: Sat Oct 19 11:42:54 2013 -0700
net: generalize skb_segment()
that correctly populates the header offsets in the new segment.
-vlad
> skb_copy_from_linear_data(skb, nskb->data, doffset);
>
> if (fskb != skb_shinfo(skb)->frag_list)
>
^ permalink raw reply [flat|nested] 139+ messages in thread* Re: [PATCH 3.2 105/131] net: Correctly set segment mac_len in skb_segment().
2014-09-11 12:48 ` Vlad Yasevich
@ 2014-09-13 22:38 ` Ben Hutchings
0 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-13 22:38 UTC (permalink / raw)
To: vyasevic; +Cc: linux-kernel, stable, akpm, Eric Dumazet, David S. Miller
[-- Attachment #1: Type: text/plain, Size: 3796 bytes --]
On Thu, 2014-09-11 at 08:48 -0400, Vlad Yasevich wrote:
> On 09/11/2014 08:32 AM, Ben Hutchings wrote:
> > 3.2.63-rc1 review patch. If anyone has any objections, please let me know.
> >
> > ------------------
> >
> > From: Vlad Yasevich <vyasevic@redhat.com>
> >
> > [ Upstream commit fcdfe3a7fa4cb74391d42b6a26dc07c20dab1d82 ]
> >
> > When performing segmentation, the mac_len value is copied right
> > out of the original skb. However, this value is not always set correctly
> > (like when the packet is VLAN-tagged) and we'll end up copying a bad
> > value.
> >
> > One way to demonstrate this is to configure a VM which tags
> > packets internally and turn off VLAN acceleration on the forwarding
> > bridge port. The packets show up corrupt like this:
> > 16:18:24.985548 52:54:00:ab:be:25 > 52:54:00:26:ce:a3, ethertype 802.1Q
> > (0x8100), length 1518: vlan 100, p 0, ethertype 0x05e0,
> > 0x0000: 8cdb 1c7c 8cdb 0064 4006 b59d 0a00 6402 ...|...d@.....d.
> > 0x0010: 0a00 6401 9e0d b441 0a5e 64ec 0330 14fa ..d....A.^d..0..
> > 0x0020: 29e3 01c9 f871 0000 0101 080a 000a e833)....q.........3
> > 0x0030: 000f 8c75 6e65 7470 6572 6600 6e65 7470 ...unetperf.netp
> > 0x0040: 6572 6600 6e65 7470 6572 6600 6e65 7470 erf.netperf.netp
> > 0x0050: 6572 6600 6e65 7470 6572 6600 6e65 7470 erf.netperf.netp
> > 0x0060: 6572 6600 6e65 7470 6572 6600 6e65 7470 erf.netperf.netp
> > ...
> >
> > This also leads to awful throughput as GSO packets are dropped and
> > cause retransmissions.
> >
> > The solution is to set the mac_len using the values already available
> > in then new skb. We've already adjusted all of the header offset, so we
> > might as well correctly figure out the mac_len using skb_reset_mac_len().
> > After this change, packets are segmented correctly and performance
> > is restored.
> >
> > CC: Eric Dumazet <edumazet@google.com>
> > Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
> > Signed-off-by: David S. Miller <davem@davemloft.net>
> > Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
> > ---
> > net/core/skbuff.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/net/core/skbuff.c b/net/core/skbuff.c
> > index 7121d9b..0ccfb53 100644
> > --- a/net/core/skbuff.c
> > +++ b/net/core/skbuff.c
> > @@ -2669,7 +2669,6 @@ struct sk_buff *skb_segment(struct sk_buff *skb, u32 features)
> > tail = nskb;
> >
> > __copy_skb_header(nskb, skb);
> > - nskb->mac_len = skb->mac_len;
> >
> > /* nskb and skb might have different headroom */
> > if (nskb->ip_summed == CHECKSUM_PARTIAL)
> > @@ -2679,6 +2678,7 @@ struct sk_buff *skb_segment(struct sk_buff *skb, u32 features)
> > skb_set_network_header(nskb, skb->mac_len);
> > nskb->transport_header = (nskb->network_header +
> > skb_network_header_len(skb));
> > + skb_reset_mac_len(nskb);
>
> This will not fix the problem here because the network header above will
> already be set incorrectly based on the old mac_len.
>
> This patch depends on
> commit 030737bcc3c404e273e97dbe06fe9561699a411b
> Author: Eric Dumazet <edumazet@google.com>
> Date: Sat Oct 19 11:42:54 2013 -0700
>
> net: generalize skb_segment()
>
> that correctly populates the header offsets in the new segment.
I can't apply that because 3.2 doesn't even have the
skb_headers_offset_update() function. So I'm going to drop this patch
for now, but if you or David can provide a complete backport for this
fix I would very much appreciate it.
Ben.
--
Ben Hutchings
I'm always amazed by the number of people who take up solipsism because
they heard someone else explain it. - E*Borg on alt.fan.pratchett
[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 811 bytes --]
^ permalink raw reply [flat|nested] 139+ messages in thread
* [PATCH 3.2 059/131] ring-buffer: Always reset iterator to reader page
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (118 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 105/131] net: Correctly set segment mac_len in skb_segment() Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 053/131] drm/radeon: load the lm63 driver for an lm64 thermal chip Ben Hutchings
` (12 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Steven Rostedt (Red Hat)
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "Steven Rostedt (Red Hat)" <rostedt@goodmis.org>
commit 651e22f2701b4113989237c3048d17337dd2185c upstream.
When performing a consuming read, the ring buffer swaps out a
page from the ring buffer with a empty page and this page that
was swapped out becomes the new reader page. The reader page
is owned by the reader and since it was swapped out of the ring
buffer, writers do not have access to it (there's an exception
to that rule, but it's out of scope for this commit).
When reading the "trace" file, it is a non consuming read, which
means that the data in the ring buffer will not be modified.
When the trace file is opened, a ring buffer iterator is allocated
and writes to the ring buffer are disabled, such that the iterator
will not have issues iterating over the data.
Although the ring buffer disabled writes, it does not disable other
reads, or even consuming reads. If a consuming read happens, then
the iterator is reset and starts reading from the beginning again.
My tests would sometimes trigger this bug on my i386 box:
WARNING: CPU: 0 PID: 5175 at kernel/trace/trace.c:1527 __trace_find_cmdline+0x66/0xaa()
Modules linked in:
CPU: 0 PID: 5175 Comm: grep Not tainted 3.16.0-rc3-test+ #8
Hardware name: /DG965MQ, BIOS MQ96510J.86A.0372.2006.0605.1717 06/05/2006
00000000 00000000 f09c9e1c c18796b3 c1b5d74c f09c9e4c c103a0e3 c1b5154b
f09c9e78 00001437 c1b5d74c 000005f7 c10bd85a c10bd85a c1cac57c f09c9eb0
ed0e0000 f09c9e64 c103a185 00000009 f09c9e5c c1b5154b f09c9e78 f09c9e80^M
Call Trace:
[<c18796b3>] dump_stack+0x4b/0x75
[<c103a0e3>] warn_slowpath_common+0x7e/0x95
[<c10bd85a>] ? __trace_find_cmdline+0x66/0xaa
[<c10bd85a>] ? __trace_find_cmdline+0x66/0xaa
[<c103a185>] warn_slowpath_fmt+0x33/0x35
[<c10bd85a>] __trace_find_cmdline+0x66/0xaa^M
[<c10bed04>] trace_find_cmdline+0x40/0x64
[<c10c3c16>] trace_print_context+0x27/0xec
[<c10c4360>] ? trace_seq_printf+0x37/0x5b
[<c10c0b15>] print_trace_line+0x319/0x39b
[<c10ba3fb>] ? ring_buffer_read+0x47/0x50
[<c10c13b1>] s_show+0x192/0x1ab
[<c10bfd9a>] ? s_next+0x5a/0x7c
[<c112e76e>] seq_read+0x267/0x34c
[<c1115a25>] vfs_read+0x8c/0xef
[<c112e507>] ? seq_lseek+0x154/0x154
[<c1115ba2>] SyS_read+0x54/0x7f
[<c188488e>] syscall_call+0x7/0xb
---[ end trace 3f507febd6b4cc83 ]---
>>>> ##### CPU 1 buffer started ####
Which was the __trace_find_cmdline() function complaining about the pid
in the event record being negative.
After adding more test cases, this would trigger more often. Strangely
enough, it would never trigger on a single test, but instead would trigger
only when running all the tests. I believe that was the case because it
required one of the tests to be shutting down via delayed instances while
a new test started up.
After spending several days debugging this, I found that it was caused by
the iterator becoming corrupted. Debugging further, I found out why
the iterator became corrupted. It happened with the rb_iter_reset().
As consuming reads may not read the full reader page, and only part
of it, there's a "read" field to know where the last read took place.
The iterator, must also start at the read position. In the rb_iter_reset()
code, if the reader page was disconnected from the ring buffer, the iterator
would start at the head page within the ring buffer (where writes still
happen). But the mistake there was that it still used the "read" field
to start the iterator on the head page, where it should always start
at zero because readers never read from within the ring buffer where
writes occur.
I originally wrote a patch to have it set the iter->head to 0 instead
of iter->head_page->read, but then I questioned why it wasn't always
setting the iter to point to the reader page, as the reader page is
still valid. The list_empty(reader_page->list) just means that it was
successful in swapping out. But the reader_page may still have data.
There was a bug report a long time ago that was not reproducible that
had something about trace_pipe (consuming read) not matching trace
(iterator read). This may explain why that happened.
Anyway, the correct answer to this bug is to always use the reader page
an not reset the iterator to inside the writable ring buffer.
Fixes: d769041f8653 "ring_buffer: implement new locking"
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
kernel/trace/ring_buffer.c | 17 ++++++-----------
1 file changed, 6 insertions(+), 11 deletions(-)
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -2843,21 +2843,16 @@ static void rb_iter_reset(struct ring_bu
struct ring_buffer_per_cpu *cpu_buffer = iter->cpu_buffer;
/* Iterator usage is expected to have record disabled */
- if (list_empty(&cpu_buffer->reader_page->list)) {
- iter->head_page = rb_set_head_page(cpu_buffer);
- if (unlikely(!iter->head_page))
- return;
- iter->head = iter->head_page->read;
- } else {
- iter->head_page = cpu_buffer->reader_page;
- iter->head = cpu_buffer->reader_page->read;
- }
+ iter->head_page = cpu_buffer->reader_page;
+ iter->head = cpu_buffer->reader_page->read;
+
+ iter->cache_reader_page = iter->head_page;
+ iter->cache_read = iter->head;
+
if (iter->head)
iter->read_stamp = cpu_buffer->read_stamp;
else
iter->read_stamp = iter->head_page->page->time_stamp;
- iter->cache_reader_page = cpu_buffer->reader_page;
- iter->cache_read = cpu_buffer->read;
}
/**
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 053/131] drm/radeon: load the lm63 driver for an lm64 thermal chip.
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (119 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 059/131] ring-buffer: Always reset iterator to reader page Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 094/131] USB: serial: fix potential heap buffer overflow Ben Hutchings
` (11 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Alex Deucher
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
commit 5dc355325b648dc9b4cf3bea4d968de46fd59215 upstream.
Looks like the lm63 driver supports the lm64 as well.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/gpu/drm/radeon/radeon_atombios.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1873,7 +1873,7 @@ static const char *thermal_controller_na
"adm1032",
"adm1030",
"max6649",
- "lm64",
+ "lm63", /* lm64 */
"f75375",
"asc7xxx",
};
@@ -1884,7 +1884,7 @@ static const char *pp_lib_thermal_contro
"adm1032",
"adm1030",
"max6649",
- "lm64",
+ "lm63", /* lm64 */
"f75375",
"RV6xx",
"RV770",
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 094/131] USB: serial: fix potential heap buffer overflow
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (120 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 053/131] drm/radeon: load the lm63 driver for an lm64 thermal chip Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 126/131] x86, espfix: Fix broken header guard Ben Hutchings
` (10 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Johan Hovold, Greg Kroah-Hartman
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <johan@kernel.org>
commit 5654699fb38512bdbfc0f892ce54fce75bdc2bab upstream.
Make sure to verify the number of ports requested by subdriver to avoid
writing beyond the end of fixed-size array in interface data.
The current usb-serial implementation is limited to eight ports per
interface but failed to verify that the number of ports requested by a
subdriver (which could have been determined from device descriptors) did
not exceed this limit.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2: s/ddev/\&interface->dev/]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/serial/usb-serial.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -888,6 +888,11 @@ int usb_serial_probe(struct usb_interfac
num_ports = type->num_ports;
}
+ if (num_ports > MAX_NUM_PORTS) {
+ dev_warn(&interface->dev, "too many ports requested: %d\n", num_ports);
+ num_ports = MAX_NUM_PORTS;
+ }
+
serial->num_ports = num_ports;
serial->num_bulk_in = num_bulk_in;
serial->num_bulk_out = num_bulk_out;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 126/131] x86, espfix: Fix broken header guard
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (121 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 094/131] USB: serial: fix potential heap buffer overflow Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 129/131] x86_64/entry/xen: Do not invoke espfix64 on Xen Ben Hutchings
` (9 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, H. Peter Anvin, Greg Kroah-Hartman, Fengguang Wu
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "H. Peter Anvin" <hpa@linux.intel.com>
commit 20b68535cd27183ebd3651ff313afb2b97dac941 upstream.
Header guard is #ifndef, not #ifdef...
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/x86/include/asm/espfix.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/include/asm/espfix.h
+++ b/arch/x86/include/asm/espfix.h
@@ -1,4 +1,4 @@
-#ifdef _ASM_X86_ESPFIX_H
+#ifndef _ASM_X86_ESPFIX_H
#define _ASM_X86_ESPFIX_H
#ifdef CONFIG_X86_64
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 129/131] x86_64/entry/xen: Do not invoke espfix64 on Xen
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (122 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 126/131] x86, espfix: Fix broken header guard Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 127/131] x86, espfix: Make espfix64 a Kconfig option, fix UML Ben Hutchings
` (8 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Andy Lutomirski, H. Peter Anvin, Greg Kroah-Hartman
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Andy Lutomirski <luto@amacapital.net>
commit 7209a75d2009dbf7745e2fd354abf25c3deb3ca3 upstream.
This moves the espfix64 logic into native_iret. To make this work,
it gets rid of the native patch for INTERRUPT_RETURN:
INTERRUPT_RETURN on native kernels is now 'jmp native_iret'.
This changes the 16-bit SS behavior on Xen from OOPSing to leaking
some bits of the Xen hypervisor's RSP (I think).
[ hpa: this is a nonzero cost on native, but probably not enough to
measure. Xen needs to fix this in their own code, probably doing
something equivalent to espfix64. ]
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Link: http://lkml.kernel.org/r/7b8f1d8ef6597cb16ae004a43c56980a7de3cf94.1406129132.git.luto@amacapital.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/x86/include/asm/irqflags.h | 2 +-
arch/x86/kernel/entry_64.S | 31 ++++++++++---------------------
arch/x86/kernel/paravirt_patch_64.c | 2 --
3 files changed, 11 insertions(+), 24 deletions(-)
--- a/arch/x86/include/asm/irqflags.h
+++ b/arch/x86/include/asm/irqflags.h
@@ -129,7 +129,7 @@ static inline notrace unsigned long arch
#define PARAVIRT_ADJUST_EXCEPTION_FRAME /* */
-#define INTERRUPT_RETURN iretq
+#define INTERRUPT_RETURN jmp native_iret
#define USERGS_SYSRET64 \
swapgs; \
sysretq;
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -861,33 +861,27 @@ restore_args:
RESTORE_ARGS 1,8,1
irq_return:
+ INTERRUPT_RETURN
+
+ENTRY(native_iret)
/*
* Are we returning to a stack segment from the LDT? Note: in
* 64-bit mode SS:RSP on the exception stack is always valid.
*/
#ifdef CONFIG_X86_ESPFIX64
testb $4,(SS-RIP)(%rsp)
- jnz irq_return_ldt
+ jnz native_irq_return_ldt
#endif
-irq_return_iret:
- INTERRUPT_RETURN
-
- .section __ex_table, "a"
- .quad irq_return_iret, bad_iret
- .previous
-
-#ifdef CONFIG_PARAVIRT
-ENTRY(native_iret)
+native_irq_return_iret:
iretq
.section __ex_table,"a"
- .quad native_iret, bad_iret
+ .quad native_irq_return_iret, bad_iret
.previous
-#endif
#ifdef CONFIG_X86_ESPFIX64
-irq_return_ldt:
+native_irq_return_ldt:
pushq_cfi %rax
pushq_cfi %rdi
SWAPGS
@@ -909,7 +903,7 @@ irq_return_ldt:
SWAPGS
movq %rax,%rsp
popq_cfi %rax
- jmp irq_return_iret
+ jmp native_irq_return_iret
#endif
.section .fixup,"ax"
@@ -995,13 +989,8 @@ __do_double_fault:
cmpl $__KERNEL_CS,CS(%rdi)
jne do_double_fault
movq RIP(%rdi),%rax
- cmpq $irq_return_iret,%rax
-#ifdef CONFIG_PARAVIRT
- je 1f
- cmpq $native_iret,%rax
-#endif
+ cmpq $native_irq_return_iret,%rax
jne do_double_fault /* This shouldn't happen... */
-1:
movq PER_CPU_VAR(kernel_stack),%rax
subq $(6*8-KERNEL_STACK_OFFSET),%rax /* Reset to original stack */
movq %rax,RSP(%rdi)
@@ -1511,7 +1500,7 @@ error_sti:
*/
error_kernelspace:
incl %ebx
- leaq irq_return_iret(%rip),%rcx
+ leaq native_irq_return_iret(%rip),%rcx
cmpq %rcx,RIP+8(%rsp)
je error_swapgs
movl %ecx,%eax /* zero extend */
--- a/arch/x86/kernel/paravirt_patch_64.c
+++ b/arch/x86/kernel/paravirt_patch_64.c
@@ -6,7 +6,6 @@ DEF_NATIVE(pv_irq_ops, irq_disable, "cli
DEF_NATIVE(pv_irq_ops, irq_enable, "sti");
DEF_NATIVE(pv_irq_ops, restore_fl, "pushq %rdi; popfq");
DEF_NATIVE(pv_irq_ops, save_fl, "pushfq; popq %rax");
-DEF_NATIVE(pv_cpu_ops, iret, "iretq");
DEF_NATIVE(pv_mmu_ops, read_cr2, "movq %cr2, %rax");
DEF_NATIVE(pv_mmu_ops, read_cr3, "movq %cr3, %rax");
DEF_NATIVE(pv_mmu_ops, write_cr3, "movq %rdi, %cr3");
@@ -50,7 +49,6 @@ unsigned native_patch(u8 type, u16 clobb
PATCH_SITE(pv_irq_ops, save_fl);
PATCH_SITE(pv_irq_ops, irq_enable);
PATCH_SITE(pv_irq_ops, irq_disable);
- PATCH_SITE(pv_cpu_ops, iret);
PATCH_SITE(pv_cpu_ops, irq_enable_sysexit);
PATCH_SITE(pv_cpu_ops, usergs_sysret32);
PATCH_SITE(pv_cpu_ops, usergs_sysret64);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 127/131] x86, espfix: Make espfix64 a Kconfig option, fix UML
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (123 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 129/131] x86_64/entry/xen: Do not invoke espfix64 on Xen Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 130/131] x86/espfix/xen: Fix allocation of pages for paravirt page tables Ben Hutchings
` (7 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Richard Weinberger, Ingo Molnar, H. Peter Anvin,
Greg Kroah-Hartman
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "H. Peter Anvin" <hpa@zytor.com>
commit 197725de65477bc8509b41388157c1a2283542bb upstream.
Make espfix64 a hidden Kconfig option. This fixes the x86-64 UML
build which had broken due to the non-existence of init_espfix_bsp()
in UML: since UML uses its own Kconfig, this option does not appear in
the UML build.
This also makes it possible to make support for 16-bit segments a
configuration option, for the people who want to minimize the size of
the kernel.
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Richard Weinberger <richard@nod.at>
Link: http://lkml.kernel.org/r/1398816946-3351-1-git-send-email-hpa@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/x86/Kconfig | 4 ++++
arch/x86/kernel/Makefile | 2 +-
arch/x86/kernel/smpboot.c | 2 +-
init/main.c | 2 +-
4 files changed, 7 insertions(+), 3 deletions(-)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -901,6 +901,10 @@ config VM86
XFree86 to initialize some video cards via BIOS. Disabling this
option saves about 6k.
+config X86_ESPFIX64
+ def_bool y
+ depends on X86_64
+
config TOSHIBA
tristate "Toshiba Laptop support"
depends on X86_32
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -27,7 +27,7 @@ obj-$(CONFIG_X86_32) += sys_i386_32.o i3
obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o
obj-$(CONFIG_X86_64) += vsyscall_emu_64.o
-obj-$(CONFIG_X86_64) += espfix_64.o
+obj-$(CONFIG_X86_ESPFIX64) += espfix_64.o
obj-y += bootflag.o e820.o
obj-y += pci-dma.o quirks.o topology.o kdebugfs.o
obj-y += alternative.o i8253.o pci-nommu.o hw_breakpoint.o
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -268,7 +268,7 @@ notrace static void __cpuinit start_seco
/*
* Enable the espfix hack for this CPU
*/
-#ifdef CONFIG_X86_64
+#ifdef CONFIG_X86_ESPFIX64
init_espfix_ap();
#endif
--- a/init/main.c
+++ b/init/main.c
@@ -610,7 +610,7 @@ asmlinkage void __init start_kernel(void
if (efi_enabled(EFI_RUNTIME_SERVICES))
efi_enter_virtual_mode();
#endif
-#ifdef CONFIG_X86_64
+#ifdef CONFIG_X86_ESPFIX64
/* Should be run before the first non-init thread is created */
init_espfix_bsp();
#endif
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 130/131] x86/espfix/xen: Fix allocation of pages for paravirt page tables
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (124 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 127/131] x86, espfix: Make espfix64 a Kconfig option, fix UML Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 123/131] Revert "x86-64, modify_ldt: Make support for 16-bit segments a runtime option" Ben Hutchings
` (6 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Boris Ostrovsky, Konrad Rzeszutek Wilk, Greg Kroah-Hartman,
H. Peter Anvin
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
commit 8762e5092828c4dc0f49da5a47a644c670df77f3 upstream.
init_espfix_ap() is currently off by one level when informing hypervisor
that allocated pages will be used for ministacks' page tables.
The most immediate effect of this on a PV guest is that if
'stack_page = __get_free_page()' returns a non-zeroed-out page the hypervisor
will refuse to use it for a page table (which it shouldn't be anyway). This will
result in warnings by both Xen and Linux.
More importantly, a subsequent write to that page (again, by a PV guest) is
likely to result in fatal page fault.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: http://lkml.kernel.org/r/1404926298-5565-1-git-send-email-boris.ostrovsky@oracle.com
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/x86/kernel/espfix_64.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
--- a/arch/x86/kernel/espfix_64.c
+++ b/arch/x86/kernel/espfix_64.c
@@ -175,7 +175,7 @@ void init_espfix_ap(void)
if (!pud_present(pud)) {
pmd_p = (pmd_t *)__get_free_page(PGALLOC_GFP);
pud = __pud(__pa(pmd_p) | (PGTABLE_PROT & ptemask));
- paravirt_alloc_pud(&init_mm, __pa(pmd_p) >> PAGE_SHIFT);
+ paravirt_alloc_pmd(&init_mm, __pa(pmd_p) >> PAGE_SHIFT);
for (n = 0; n < ESPFIX_PUD_CLONES; n++)
set_pud(&pud_p[n], pud);
}
@@ -185,7 +185,7 @@ void init_espfix_ap(void)
if (!pmd_present(pmd)) {
pte_p = (pte_t *)__get_free_page(PGALLOC_GFP);
pmd = __pmd(__pa(pte_p) | (PGTABLE_PROT & ptemask));
- paravirt_alloc_pmd(&init_mm, __pa(pte_p) >> PAGE_SHIFT);
+ paravirt_alloc_pte(&init_mm, __pa(pte_p) >> PAGE_SHIFT);
for (n = 0; n < ESPFIX_PMD_CLONES; n++)
set_pmd(&pmd_p[n], pmd);
}
@@ -193,7 +193,6 @@ void init_espfix_ap(void)
pte_p = pte_offset_kernel(&pmd, addr);
stack_page = (void *)__get_free_page(GFP_KERNEL);
pte = __pte(__pa(stack_page) | (__PAGE_KERNEL_RO & ptemask));
- paravirt_alloc_pte(&init_mm, __pa(stack_page) >> PAGE_SHIFT);
for (n = 0; n < ESPFIX_PTE_CLONES; n++)
set_pte(&pte_p[n*PTE_STRIDE], pte);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 123/131] Revert "x86-64, modify_ldt: Make support for 16-bit segments a runtime option"
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (125 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 130/131] x86/espfix/xen: Fix allocation of pages for paravirt page tables Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 128/131] x86, espfix: Make it possible to disable 16-bit support Ben Hutchings
` (5 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Greg Kroah-Hartman, H. Peter Anvin
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "H. Peter Anvin" <hpa@zytor.com>
commit 7ed6fb9b5a5510e4ef78ab27419184741169978a upstream.
This reverts commit fa81511bb0bbb2b1aace3695ce869da9762624ff in
preparation of merging in the proper fix (espfix64).
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/x86/kernel/ldt.c | 4 +---
arch/x86/vdso/vdso32-setup.c | 8 --------
2 files changed, 1 insertion(+), 11 deletions(-)
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -21,8 +21,6 @@
#include <asm/mmu_context.h>
#include <asm/syscalls.h>
-int sysctl_ldt16 = 0;
-
#ifdef CONFIG_SMP
static void flush_ldt(void *current_mm)
{
@@ -237,7 +235,7 @@ static int write_ldt(void __user *ptr, u
* IRET leaking the high bits of the kernel stack address.
*/
#ifdef CONFIG_X86_64
- if (!ldt_info.seg_32bit && !sysctl_ldt16) {
+ if (!ldt_info.seg_32bit) {
error = -EINVAL;
goto out_unlock;
}
--- a/arch/x86/vdso/vdso32-setup.c
+++ b/arch/x86/vdso/vdso32-setup.c
@@ -41,7 +41,6 @@ enum {
#ifdef CONFIG_X86_64
#define vdso_enabled sysctl_vsyscall32
#define arch_setup_additional_pages syscall32_setup_pages
-extern int sysctl_ldt16;
#endif
/*
@@ -388,13 +387,6 @@ static ctl_table abi_table2[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
- },
- {
- .procname = "ldt16",
- .data = &sysctl_ldt16,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec
},
{}
};
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 128/131] x86, espfix: Make it possible to disable 16-bit support
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (126 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 123/131] Revert "x86-64, modify_ldt: Make support for 16-bit segments a runtime option" Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 125/131] x86, espfix: Move espfix definitions into a separate header file Ben Hutchings
` (4 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, H. Peter Anvin, Greg Kroah-Hartman
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "H. Peter Anvin" <hpa@zytor.com>
commit 34273f41d57ee8d854dcd2a1d754cbb546cb548f upstream.
Embedded systems, which may be very memory-size-sensitive, are
extremely unlikely to ever encounter any 16-bit software, so make it
a CONFIG_EXPERT option to turn off support for any 16-bit software
whatsoever.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Link: http://lkml.kernel.org/r/1398816946-3351-1-git-send-email-hpa@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/x86/Kconfig | 23 ++++++++++++++++++-----
arch/x86/kernel/entry_32.S | 12 ++++++++++++
arch/x86/kernel/entry_64.S | 8 ++++++++
arch/x86/kernel/ldt.c | 5 +++++
4 files changed, 43 insertions(+), 5 deletions(-)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -896,14 +896,27 @@ config VM86
default y
depends on X86_32
---help---
- This option is required by programs like DOSEMU to run 16-bit legacy
- code on X86 processors. It also may be needed by software like
- XFree86 to initialize some video cards via BIOS. Disabling this
- option saves about 6k.
+ This option is required by programs like DOSEMU to run
+ 16-bit real mode legacy code on x86 processors. It also may
+ be needed by software like XFree86 to initialize some video
+ cards via BIOS. Disabling this option saves about 6K.
+
+config X86_16BIT
+ bool "Enable support for 16-bit segments" if EXPERT
+ default y
+ ---help---
+ This option is required by programs like Wine to run 16-bit
+ protected mode legacy code on x86 processors. Disabling
+ this option saves about 300 bytes on i386, or around 6K text
+ plus 16K runtime memory on x86-64,
+
+config X86_ESPFIX32
+ def_bool y
+ depends on X86_16BIT && X86_32
config X86_ESPFIX64
def_bool y
- depends on X86_64
+ depends on X86_16BIT && X86_64
config TOSHIBA
tristate "Toshiba Laptop support"
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -527,6 +527,7 @@ syscall_exit:
restore_all:
TRACE_IRQS_IRET
restore_all_notrace:
+#ifdef CONFIG_X86_ESPFIX32
movl PT_EFLAGS(%esp), %eax # mix EFLAGS, SS and CS
# Warning: PT_OLDSS(%esp) contains the wrong/random values if we
# are returning to the kernel.
@@ -537,6 +538,7 @@ restore_all_notrace:
cmpl $((SEGMENT_LDT << 8) | USER_RPL), %eax
CFI_REMEMBER_STATE
je ldt_ss # returning to user-space with LDT SS
+#endif
restore_nocheck:
RESTORE_REGS 4 # skip orig_eax/error_code
irq_return:
@@ -552,6 +554,7 @@ ENTRY(iret_exc)
.long irq_return,iret_exc
.previous
+#ifdef CONFIG_X86_ESPFIX32
CFI_RESTORE_STATE
ldt_ss:
#ifdef CONFIG_PARAVIRT
@@ -595,6 +598,7 @@ ldt_ss:
lss (%esp), %esp /* switch to espfix segment */
CFI_ADJUST_CFA_OFFSET -8
jmp restore_nocheck
+#endif
CFI_ENDPROC
ENDPROC(system_call)
@@ -766,6 +770,7 @@ ENDPROC(ptregs_clone)
* the high word of the segment base from the GDT and swiches to the
* normal stack and adjusts ESP with the matching offset.
*/
+#ifdef CONFIG_X86_ESPFIX32
/* fixup the stack */
mov GDT_ESPFIX_SS + 4, %al /* bits 16..23 */
mov GDT_ESPFIX_SS + 7, %ah /* bits 24..31 */
@@ -775,8 +780,10 @@ ENDPROC(ptregs_clone)
pushl_cfi %eax
lss (%esp), %esp /* switch to the normal stack segment */
CFI_ADJUST_CFA_OFFSET -8
+#endif
.endm
.macro UNWIND_ESPFIX_STACK
+#ifdef CONFIG_X86_ESPFIX32
movl %ss, %eax
/* see if on espfix stack */
cmpw $__ESPFIX_SS, %ax
@@ -787,6 +794,7 @@ ENDPROC(ptregs_clone)
/* switch to normal stack */
FIXUP_ESPFIX_STACK
27:
+#endif
.endm
/*
@@ -1323,11 +1331,13 @@ END(debug)
*/
ENTRY(nmi)
RING0_INT_FRAME
+#ifdef CONFIG_X86_ESPFIX32
pushl_cfi %eax
movl %ss, %eax
cmpw $__ESPFIX_SS, %ax
popl_cfi %eax
je nmi_espfix_stack
+#endif
cmpl $ia32_sysenter_target,(%esp)
je nmi_stack_fixup
pushl_cfi %eax
@@ -1367,6 +1377,7 @@ nmi_debug_stack_check:
FIX_STACK 24, nmi_stack_correct, 1
jmp nmi_stack_correct
+#ifdef CONFIG_X86_ESPFIX32
nmi_espfix_stack:
/* We have a RING0_INT_FRAME here.
*
@@ -1388,6 +1399,7 @@ nmi_espfix_stack:
lss 12+4(%esp), %esp # back to espfix stack
CFI_ADJUST_CFA_OFFSET -24
jmp irq_return
+#endif
CFI_ENDPROC
END(nmi)
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -865,8 +865,10 @@ irq_return:
* Are we returning to a stack segment from the LDT? Note: in
* 64-bit mode SS:RSP on the exception stack is always valid.
*/
+#ifdef CONFIG_X86_ESPFIX64
testb $4,(SS-RIP)(%rsp)
jnz irq_return_ldt
+#endif
irq_return_iret:
INTERRUPT_RETURN
@@ -884,6 +886,7 @@ ENTRY(native_iret)
.previous
#endif
+#ifdef CONFIG_X86_ESPFIX64
irq_return_ldt:
pushq_cfi %rax
pushq_cfi %rdi
@@ -907,6 +910,7 @@ irq_return_ldt:
movq %rax,%rsp
popq_cfi %rax
jmp irq_return_iret
+#endif
.section .fixup,"ax"
bad_iret:
@@ -980,6 +984,7 @@ END(common_interrupt)
* modify the stack to make it look like we just entered
* the #GP handler from user space, similar to bad_iret.
*/
+#ifdef CONFIG_X86_ESPFIX64
ALIGN
__do_double_fault:
XCPT_FRAME 1 RDI+8
@@ -1005,6 +1010,9 @@ __do_double_fault:
retq
CFI_ENDPROC
END(__do_double_fault)
+#else
+# define __do_double_fault do_double_fault
+#endif
/*
* End of kprobes section
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -230,6 +230,11 @@ static int write_ldt(void __user *ptr, u
}
}
+ if (!IS_ENABLED(CONFIG_X86_16BIT) && !ldt_info.seg_32bit) {
+ error = -EINVAL;
+ goto out_unlock;
+ }
+
fill_ldt(&ldt, &ldt_info);
if (oldmode)
ldt.avl = 0;
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 125/131] x86, espfix: Move espfix definitions into a separate header file
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (127 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 128/131] x86, espfix: Make it possible to disable 16-bit support Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 124/131] x86-64, espfix: Don't leak bits 31:16 of %esp returning to 16-bit stack Ben Hutchings
` (3 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, H. Peter Anvin, Greg Kroah-Hartman, Fengguang Wu
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "H. Peter Anvin" <hpa@linux.intel.com>
commit e1fe9ed8d2a4937510d0d60e20705035c2609aea upstream.
Sparse warns that the percpu variables aren't declared before they are
defined. Rather than hacking around it, move espfix definitions into
a proper header file.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/x86/include/asm/espfix.h | 16 ++++++++++++++++
arch/x86/include/asm/setup.h | 5 ++---
arch/x86/kernel/espfix_64.c | 1 +
3 files changed, 19 insertions(+), 3 deletions(-)
create mode 100644 arch/x86/include/asm/espfix.h
--- /dev/null
+++ b/arch/x86/include/asm/espfix.h
@@ -0,0 +1,16 @@
+#ifdef _ASM_X86_ESPFIX_H
+#define _ASM_X86_ESPFIX_H
+
+#ifdef CONFIG_X86_64
+
+#include <asm/percpu.h>
+
+DECLARE_PER_CPU_READ_MOSTLY(unsigned long, espfix_stack);
+DECLARE_PER_CPU_READ_MOSTLY(unsigned long, espfix_waddr);
+
+extern void init_espfix_bsp(void);
+extern void init_espfix_ap(void);
+
+#endif /* CONFIG_X86_64 */
+
+#endif /* _ASM_X86_ESPFIX_H */
--- a/arch/x86/include/asm/setup.h
+++ b/arch/x86/include/asm/setup.h
@@ -59,11 +59,10 @@ extern void x86_ce4100_early_setup(void);
static inline void x86_ce4100_early_setup(void) { }
#endif
-extern void init_espfix_bsp(void);
-extern void init_espfix_ap(void);
-
#ifndef _SETUP
+#include <asm/espfix.h>
+
/*
* This is set up by the setup-routine at boot-time
*/
--- a/arch/x86/kernel/espfix_64.c
+++ b/arch/x86/kernel/espfix_64.c
@@ -40,6 +40,7 @@
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
#include <asm/setup.h>
+#include <asm/espfix.h>
/*
* Note: we only need 6*8 = 48 bytes for the espfix stack, but round
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 124/131] x86-64, espfix: Don't leak bits 31:16 of %esp returning to 16-bit stack
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (128 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 125/131] x86, espfix: Move espfix definitions into a separate header file Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 12:32 ` [PATCH 3.2 131/131] microblaze: Fix makefile to work with latest toolchain Ben Hutchings
` (2 subsequent siblings)
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable
Cc: akpm, Borislav Petkov, comex, Greg Kroah-Hartman,
Alexander van Heukelum, H. Peter Anvin, Arjan van de Ven,
Dirk Hohndel, Brian Gerst, Linus Torvalds, Boris Ostrovsky,
Konrad Rzeszutek Wilk, Andrew Lutomriski
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "H. Peter Anvin" <hpa@linux.intel.com>
commit 3891a04aafd668686239349ea58f3314ea2af86b upstream.
The IRET instruction, when returning to a 16-bit segment, only
restores the bottom 16 bits of the user space stack pointer. This
causes some 16-bit software to break, but it also leaks kernel state
to user space. We have a software workaround for that ("espfix") for
the 32-bit kernel, but it relies on a nonzero stack segment base which
is not available in 64-bit mode.
In checkin:
b3b42ac2cbae x86-64, modify_ldt: Ban 16-bit segments on 64-bit kernels
we "solved" this by forbidding 16-bit segments on 64-bit kernels, with
the logic that 16-bit support is crippled on 64-bit kernels anyway (no
V86 support), but it turns out that people are doing stuff like
running old Win16 binaries under Wine and expect it to work.
This works around this by creating percpu "ministacks", each of which
is mapped 2^16 times 64K apart. When we detect that the return SS is
on the LDT, we copy the IRET frame to the ministack and use the
relevant alias to return to userspace. The ministacks are mapped
readonly, so if IRET faults we promote #GP to #DF which is an IST
vector and thus has its own stack; we then do the fixup in the #DF
handler.
(Making #GP an IST exception would make the msr_safe functions unsafe
in NMI/MC context, and quite possibly have other effects.)
Special thanks to:
- Andy Lutomirski, for the suggestion of using very small stack slots
and copy (as opposed to map) the IRET frame there, and for the
suggestion to mark them readonly and let the fault promote to #DF.
- Konrad Wilk for paravirt fixup and testing.
- Borislav Petkov for testing help and useful comments.
Reported-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/r/1398816946-3351-1-git-send-email-hpa@linux.intel.com
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Andrew Lutomriski <amluto@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Dirk Hohndel <dirk@hohndel.org>
Cc: Arjan van de Ven <arjan.van.de.ven@intel.com>
Cc: comex <comexk@gmail.com>
Cc: Alexander van Heukelum <heukelum@fastmail.fm>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
Documentation/x86/x86_64/mm.txt | 2 +
arch/x86/include/asm/pgtable_64_types.h | 2 +
arch/x86/include/asm/setup.h | 3 +
arch/x86/kernel/Makefile | 1 +
arch/x86/kernel/entry_64.S | 73 ++++++++++-
arch/x86/kernel/espfix_64.c | 208 ++++++++++++++++++++++++++++++++
arch/x86/kernel/ldt.c | 11 --
arch/x86/kernel/smpboot.c | 7 ++
arch/x86/mm/dump_pagetables.c | 39 ++++--
init/main.c | 4 +
10 files changed, 324 insertions(+), 26 deletions(-)
create mode 100644 arch/x86/kernel/espfix_64.c
--- a/Documentation/x86/x86_64/mm.txt
+++ b/Documentation/x86/x86_64/mm.txt
@@ -12,6 +12,8 @@ ffffc90000000000 - ffffe8ffffffffff (=45
ffffe90000000000 - ffffe9ffffffffff (=40 bits) hole
ffffea0000000000 - ffffeaffffffffff (=40 bits) virtual memory map (1TB)
... unused hole ...
+ffffff0000000000 - ffffff7fffffffff (=39 bits) %esp fixup stacks
+... unused hole ...
ffffffff80000000 - ffffffffa0000000 (=512 MB) kernel text mapping, from phys 0
ffffffffa0000000 - fffffffffff00000 (=1536 MB) module mapping space
--- a/arch/x86/include/asm/pgtable_64_types.h
+++ b/arch/x86/include/asm/pgtable_64_types.h
@@ -59,5 +59,7 @@ typedef struct { pteval_t pte; } pte_t;
#define MODULES_VADDR _AC(0xffffffffa0000000, UL)
#define MODULES_END _AC(0xffffffffff000000, UL)
#define MODULES_LEN (MODULES_END - MODULES_VADDR)
+#define ESPFIX_PGD_ENTRY _AC(-2, UL)
+#define ESPFIX_BASE_ADDR (ESPFIX_PGD_ENTRY << PGDIR_SHIFT)
#endif /* _ASM_X86_PGTABLE_64_DEFS_H */
--- a/arch/x86/include/asm/setup.h
+++ b/arch/x86/include/asm/setup.h
@@ -59,6 +59,9 @@ extern void x86_ce4100_early_setup(void)
static inline void x86_ce4100_early_setup(void) { }
#endif
+extern void init_espfix_bsp(void);
+extern void init_espfix_ap(void);
+
#ifndef _SETUP
/*
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -27,6 +27,7 @@ obj-$(CONFIG_X86_32) += sys_i386_32.o i3
obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o
obj-$(CONFIG_X86_64) += vsyscall_emu_64.o
+obj-$(CONFIG_X86_64) += espfix_64.o
obj-y += bootflag.o e820.o
obj-y += pci-dma.o quirks.o topology.o kdebugfs.o
obj-y += alternative.o i8253.o pci-nommu.o hw_breakpoint.o
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -55,6 +55,7 @@
#include <asm/paravirt.h>
#include <asm/ftrace.h>
#include <asm/percpu.h>
+#include <asm/pgtable_types.h>
/* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this. */
#include <linux/elf-em.h>
@@ -860,10 +861,18 @@ restore_args:
RESTORE_ARGS 1,8,1
irq_return:
+ /*
+ * Are we returning to a stack segment from the LDT? Note: in
+ * 64-bit mode SS:RSP on the exception stack is always valid.
+ */
+ testb $4,(SS-RIP)(%rsp)
+ jnz irq_return_ldt
+
+irq_return_iret:
INTERRUPT_RETURN
.section __ex_table, "a"
- .quad irq_return, bad_iret
+ .quad irq_return_iret, bad_iret
.previous
#ifdef CONFIG_PARAVIRT
@@ -875,6 +884,30 @@ ENTRY(native_iret)
.previous
#endif
+irq_return_ldt:
+ pushq_cfi %rax
+ pushq_cfi %rdi
+ SWAPGS
+ movq PER_CPU_VAR(espfix_waddr),%rdi
+ movq %rax,(0*8)(%rdi) /* RAX */
+ movq (2*8)(%rsp),%rax /* RIP */
+ movq %rax,(1*8)(%rdi)
+ movq (3*8)(%rsp),%rax /* CS */
+ movq %rax,(2*8)(%rdi)
+ movq (4*8)(%rsp),%rax /* RFLAGS */
+ movq %rax,(3*8)(%rdi)
+ movq (6*8)(%rsp),%rax /* SS */
+ movq %rax,(5*8)(%rdi)
+ movq (5*8)(%rsp),%rax /* RSP */
+ movq %rax,(4*8)(%rdi)
+ andl $0xffff0000,%eax
+ popq_cfi %rdi
+ orq PER_CPU_VAR(espfix_stack),%rax
+ SWAPGS
+ movq %rax,%rsp
+ popq_cfi %rax
+ jmp irq_return_iret
+
.section .fixup,"ax"
bad_iret:
/*
@@ -938,9 +971,41 @@ ENTRY(retint_kernel)
call preempt_schedule_irq
jmp exit_intr
#endif
-
CFI_ENDPROC
END(common_interrupt)
+
+ /*
+ * If IRET takes a fault on the espfix stack, then we
+ * end up promoting it to a doublefault. In that case,
+ * modify the stack to make it look like we just entered
+ * the #GP handler from user space, similar to bad_iret.
+ */
+ ALIGN
+__do_double_fault:
+ XCPT_FRAME 1 RDI+8
+ movq RSP(%rdi),%rax /* Trap on the espfix stack? */
+ sarq $PGDIR_SHIFT,%rax
+ cmpl $ESPFIX_PGD_ENTRY,%eax
+ jne do_double_fault /* No, just deliver the fault */
+ cmpl $__KERNEL_CS,CS(%rdi)
+ jne do_double_fault
+ movq RIP(%rdi),%rax
+ cmpq $irq_return_iret,%rax
+#ifdef CONFIG_PARAVIRT
+ je 1f
+ cmpq $native_iret,%rax
+#endif
+ jne do_double_fault /* This shouldn't happen... */
+1:
+ movq PER_CPU_VAR(kernel_stack),%rax
+ subq $(6*8-KERNEL_STACK_OFFSET),%rax /* Reset to original stack */
+ movq %rax,RSP(%rdi)
+ movq $0,(%rax) /* Missing (lost) #GP error code */
+ movq $general_protection,RIP(%rdi)
+ retq
+ CFI_ENDPROC
+END(__do_double_fault)
+
/*
* End of kprobes section
*/
@@ -1107,7 +1172,7 @@ zeroentry overflow do_overflow
zeroentry bounds do_bounds
zeroentry invalid_op do_invalid_op
zeroentry device_not_available do_device_not_available
-paranoiderrorentry double_fault do_double_fault
+paranoiderrorentry double_fault __do_double_fault
zeroentry coprocessor_segment_overrun do_coprocessor_segment_overrun
errorentry invalid_TSS do_invalid_TSS
errorentry segment_not_present do_segment_not_present
@@ -1438,7 +1503,7 @@ error_sti:
*/
error_kernelspace:
incl %ebx
- leaq irq_return(%rip),%rcx
+ leaq irq_return_iret(%rip),%rcx
cmpq %rcx,RIP+8(%rsp)
je error_swapgs
movl %ecx,%eax /* zero extend */
--- /dev/null
+++ b/arch/x86/kernel/espfix_64.c
@@ -0,0 +1,208 @@
+/* ----------------------------------------------------------------------- *
+ *
+ * Copyright 2014 Intel Corporation; author: H. Peter Anvin
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * The IRET instruction, when returning to a 16-bit segment, only
+ * restores the bottom 16 bits of the user space stack pointer. This
+ * causes some 16-bit software to break, but it also leaks kernel state
+ * to user space.
+ *
+ * This works around this by creating percpu "ministacks", each of which
+ * is mapped 2^16 times 64K apart. When we detect that the return SS is
+ * on the LDT, we copy the IRET frame to the ministack and use the
+ * relevant alias to return to userspace. The ministacks are mapped
+ * readonly, so if the IRET fault we promote #GP to #DF which is an IST
+ * vector and thus has its own stack; we then do the fixup in the #DF
+ * handler.
+ *
+ * This file sets up the ministacks and the related page tables. The
+ * actual ministack invocation is in entry_64.S.
+ */
+
+#include <linux/init.h>
+#include <linux/init_task.h>
+#include <linux/kernel.h>
+#include <linux/percpu.h>
+#include <linux/gfp.h>
+#include <linux/random.h>
+#include <asm/pgtable.h>
+#include <asm/pgalloc.h>
+#include <asm/setup.h>
+
+/*
+ * Note: we only need 6*8 = 48 bytes for the espfix stack, but round
+ * it up to a cache line to avoid unnecessary sharing.
+ */
+#define ESPFIX_STACK_SIZE (8*8UL)
+#define ESPFIX_STACKS_PER_PAGE (PAGE_SIZE/ESPFIX_STACK_SIZE)
+
+/* There is address space for how many espfix pages? */
+#define ESPFIX_PAGE_SPACE (1UL << (PGDIR_SHIFT-PAGE_SHIFT-16))
+
+#define ESPFIX_MAX_CPUS (ESPFIX_STACKS_PER_PAGE * ESPFIX_PAGE_SPACE)
+#if CONFIG_NR_CPUS > ESPFIX_MAX_CPUS
+# error "Need more than one PGD for the ESPFIX hack"
+#endif
+
+#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO)
+
+/* This contains the *bottom* address of the espfix stack */
+DEFINE_PER_CPU_READ_MOSTLY(unsigned long, espfix_stack);
+DEFINE_PER_CPU_READ_MOSTLY(unsigned long, espfix_waddr);
+
+/* Initialization mutex - should this be a spinlock? */
+static DEFINE_MUTEX(espfix_init_mutex);
+
+/* Page allocation bitmap - each page serves ESPFIX_STACKS_PER_PAGE CPUs */
+#define ESPFIX_MAX_PAGES DIV_ROUND_UP(CONFIG_NR_CPUS, ESPFIX_STACKS_PER_PAGE)
+static void *espfix_pages[ESPFIX_MAX_PAGES];
+
+static __page_aligned_bss pud_t espfix_pud_page[PTRS_PER_PUD]
+ __aligned(PAGE_SIZE);
+
+static unsigned int page_random, slot_random;
+
+/*
+ * This returns the bottom address of the espfix stack for a specific CPU.
+ * The math allows for a non-power-of-two ESPFIX_STACK_SIZE, in which case
+ * we have to account for some amount of padding at the end of each page.
+ */
+static inline unsigned long espfix_base_addr(unsigned int cpu)
+{
+ unsigned long page, slot;
+ unsigned long addr;
+
+ page = (cpu / ESPFIX_STACKS_PER_PAGE) ^ page_random;
+ slot = (cpu + slot_random) % ESPFIX_STACKS_PER_PAGE;
+ addr = (page << PAGE_SHIFT) + (slot * ESPFIX_STACK_SIZE);
+ addr = (addr & 0xffffUL) | ((addr & ~0xffffUL) << 16);
+ addr += ESPFIX_BASE_ADDR;
+ return addr;
+}
+
+#define PTE_STRIDE (65536/PAGE_SIZE)
+#define ESPFIX_PTE_CLONES (PTRS_PER_PTE/PTE_STRIDE)
+#define ESPFIX_PMD_CLONES PTRS_PER_PMD
+#define ESPFIX_PUD_CLONES (65536/(ESPFIX_PTE_CLONES*ESPFIX_PMD_CLONES))
+
+#define PGTABLE_PROT ((_KERNPG_TABLE & ~_PAGE_RW) | _PAGE_NX)
+
+static void init_espfix_random(void)
+{
+ unsigned long rand;
+
+ /*
+ * This is run before the entropy pools are initialized,
+ * but this is hopefully better than nothing.
+ */
+ if (!arch_get_random_long(&rand)) {
+ /* The constant is an arbitrary large prime */
+ rdtscll(rand);
+ rand *= 0xc345c6b72fd16123UL;
+ }
+
+ slot_random = rand % ESPFIX_STACKS_PER_PAGE;
+ page_random = (rand / ESPFIX_STACKS_PER_PAGE)
+ & (ESPFIX_PAGE_SPACE - 1);
+}
+
+void __init init_espfix_bsp(void)
+{
+ pgd_t *pgd_p;
+ pteval_t ptemask;
+
+ ptemask = __supported_pte_mask;
+
+ /* Install the espfix pud into the kernel page directory */
+ pgd_p = &init_level4_pgt[pgd_index(ESPFIX_BASE_ADDR)];
+ pgd_populate(&init_mm, pgd_p, (pud_t *)espfix_pud_page);
+
+ /* Randomize the locations */
+ init_espfix_random();
+
+ /* The rest is the same as for any other processor */
+ init_espfix_ap();
+}
+
+void init_espfix_ap(void)
+{
+ unsigned int cpu, page;
+ unsigned long addr;
+ pud_t pud, *pud_p;
+ pmd_t pmd, *pmd_p;
+ pte_t pte, *pte_p;
+ int n;
+ void *stack_page;
+ pteval_t ptemask;
+
+ /* We only have to do this once... */
+ if (likely(this_cpu_read(espfix_stack)))
+ return; /* Already initialized */
+
+ cpu = smp_processor_id();
+ addr = espfix_base_addr(cpu);
+ page = cpu/ESPFIX_STACKS_PER_PAGE;
+
+ /* Did another CPU already set this up? */
+ stack_page = ACCESS_ONCE(espfix_pages[page]);
+ if (likely(stack_page))
+ goto done;
+
+ mutex_lock(&espfix_init_mutex);
+
+ /* Did we race on the lock? */
+ stack_page = ACCESS_ONCE(espfix_pages[page]);
+ if (stack_page)
+ goto unlock_done;
+
+ ptemask = __supported_pte_mask;
+
+ pud_p = &espfix_pud_page[pud_index(addr)];
+ pud = *pud_p;
+ if (!pud_present(pud)) {
+ pmd_p = (pmd_t *)__get_free_page(PGALLOC_GFP);
+ pud = __pud(__pa(pmd_p) | (PGTABLE_PROT & ptemask));
+ paravirt_alloc_pud(&init_mm, __pa(pmd_p) >> PAGE_SHIFT);
+ for (n = 0; n < ESPFIX_PUD_CLONES; n++)
+ set_pud(&pud_p[n], pud);
+ }
+
+ pmd_p = pmd_offset(&pud, addr);
+ pmd = *pmd_p;
+ if (!pmd_present(pmd)) {
+ pte_p = (pte_t *)__get_free_page(PGALLOC_GFP);
+ pmd = __pmd(__pa(pte_p) | (PGTABLE_PROT & ptemask));
+ paravirt_alloc_pmd(&init_mm, __pa(pte_p) >> PAGE_SHIFT);
+ for (n = 0; n < ESPFIX_PMD_CLONES; n++)
+ set_pmd(&pmd_p[n], pmd);
+ }
+
+ pte_p = pte_offset_kernel(&pmd, addr);
+ stack_page = (void *)__get_free_page(GFP_KERNEL);
+ pte = __pte(__pa(stack_page) | (__PAGE_KERNEL_RO & ptemask));
+ paravirt_alloc_pte(&init_mm, __pa(stack_page) >> PAGE_SHIFT);
+ for (n = 0; n < ESPFIX_PTE_CLONES; n++)
+ set_pte(&pte_p[n*PTE_STRIDE], pte);
+
+ /* Job is done for this CPU and any CPU which shares this page */
+ ACCESS_ONCE(espfix_pages[page]) = stack_page;
+
+unlock_done:
+ mutex_unlock(&espfix_init_mutex);
+done:
+ this_cpu_write(espfix_stack, addr);
+ this_cpu_write(espfix_waddr, (unsigned long)stack_page
+ + (addr & ~PAGE_MASK));
+}
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -230,17 +230,6 @@ static int write_ldt(void __user *ptr, u
}
}
- /*
- * On x86-64 we do not support 16-bit segments due to
- * IRET leaking the high bits of the kernel stack address.
- */
-#ifdef CONFIG_X86_64
- if (!ldt_info.seg_32bit) {
- error = -EINVAL;
- goto out_unlock;
- }
-#endif
-
fill_ldt(&ldt, &ldt_info);
if (oldmode)
ldt.avl = 0;
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -266,6 +266,13 @@ notrace static void __cpuinit start_seco
check_tsc_sync_target();
/*
+ * Enable the espfix hack for this CPU
+ */
+#ifdef CONFIG_X86_64
+ init_espfix_ap();
+#endif
+
+ /*
* We need to hold call_lock, so there is no inconsistency
* between the time smp_call_function() determines number of
* IPI recipients, and the time when the determination is made
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch/x86/mm/dump_pagetables.c
@@ -30,11 +30,13 @@ struct pg_state {
unsigned long start_address;
unsigned long current_address;
const struct addr_marker *marker;
+ unsigned long lines;
};
struct addr_marker {
unsigned long start_address;
const char *name;
+ unsigned long max_lines;
};
/* indices for address_markers; keep sync'd w/ address_markers below */
@@ -45,6 +47,7 @@ enum address_markers_idx {
LOW_KERNEL_NR,
VMALLOC_START_NR,
VMEMMAP_START_NR,
+ ESPFIX_START_NR,
HIGH_KERNEL_NR,
MODULES_VADDR_NR,
MODULES_END_NR,
@@ -67,6 +70,7 @@ static struct addr_marker address_marker
{ PAGE_OFFSET, "Low Kernel Mapping" },
{ VMALLOC_START, "vmalloc() Area" },
{ VMEMMAP_START, "Vmemmap" },
+ { ESPFIX_BASE_ADDR, "ESPfix Area", 16 },
{ __START_KERNEL_map, "High Kernel Mapping" },
{ MODULES_VADDR, "Modules" },
{ MODULES_END, "End Modules" },
@@ -163,7 +167,7 @@ static void note_page(struct seq_file *m
pgprot_t new_prot, int level)
{
pgprotval_t prot, cur;
- static const char units[] = "KMGTPE";
+ static const char units[] = "BKMGTPE";
/*
* If we have a "break" in the series, we need to flush the state that
@@ -178,6 +182,7 @@ static void note_page(struct seq_file *m
st->current_prot = new_prot;
st->level = level;
st->marker = address_markers;
+ st->lines = 0;
seq_printf(m, "---[ %s ]---\n", st->marker->name);
} else if (prot != cur || level != st->level ||
st->current_address >= st->marker[1].start_address) {
@@ -188,17 +193,21 @@ static void note_page(struct seq_file *m
/*
* Now print the actual finished series
*/
- seq_printf(m, "0x%0*lx-0x%0*lx ",
- width, st->start_address,
- width, st->current_address);
-
- delta = (st->current_address - st->start_address) >> 10;
- while (!(delta & 1023) && unit[1]) {
- delta >>= 10;
- unit++;
+ if (!st->marker->max_lines ||
+ st->lines < st->marker->max_lines) {
+ seq_printf(m, "0x%0*lx-0x%0*lx ",
+ width, st->start_address,
+ width, st->current_address);
+
+ delta = (st->current_address - st->start_address);
+ while (!(delta & 1023) && unit[1]) {
+ delta >>= 10;
+ unit++;
+ }
+ seq_printf(m, "%9lu%c ", delta, *unit);
+ printk_prot(m, st->current_prot, st->level);
}
- seq_printf(m, "%9lu%c ", delta, *unit);
- printk_prot(m, st->current_prot, st->level);
+ st->lines++;
/*
* We print markers for special areas of address space,
@@ -206,7 +215,15 @@ static void note_page(struct seq_file *m
* This helps in the interpretation.
*/
if (st->current_address >= st->marker[1].start_address) {
+ if (st->marker->max_lines &&
+ st->lines > st->marker->max_lines) {
+ unsigned long nskip =
+ st->lines - st->marker->max_lines;
+ seq_printf(m, "... %lu entr%s skipped ... \n",
+ nskip, nskip == 1 ? "y" : "ies");
+ }
st->marker++;
+ st->lines = 0;
seq_printf(m, "---[ %s ]---\n", st->marker->name);
}
--- a/init/main.c
+++ b/init/main.c
@@ -610,6 +610,10 @@ asmlinkage void __init start_kernel(void
if (efi_enabled(EFI_RUNTIME_SERVICES))
efi_enter_virtual_mode();
#endif
+#ifdef CONFIG_X86_64
+ /* Should be run before the first non-init thread is created */
+ init_espfix_bsp();
+#endif
thread_info_cache_init();
cred_init();
fork_init(totalram_pages);
^ permalink raw reply [flat|nested] 139+ messages in thread* [PATCH 3.2 131/131] microblaze: Fix makefile to work with latest toolchain
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (129 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 124/131] x86-64, espfix: Don't leak bits 31:16 of %esp returning to 16-bit stack Ben Hutchings
@ 2014-09-11 12:32 ` Ben Hutchings
2014-09-11 13:30 ` [PATCH 3.2 000/131] 3.2.63-rc1 review Guenter Roeck
2014-09-11 23:13 ` Ben Hutchings
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 12:32 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: akpm, Michal Simek
3.2.63-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Michal Simek <monstr@monstr.eu>
commit 00708d421a22a0f82de2dbb91ca6213b3dcc5267 upstream.
When building with latest binutils, vmlinux includes
some sections which need to be stripped out when building
the binary image.
Signed-off-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/microblaze/boot/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/microblaze/boot/Makefile b/arch/microblaze/boot/Makefile
index 0c796cf..34940c8 100644
--- a/arch/microblaze/boot/Makefile
+++ b/arch/microblaze/boot/Makefile
@@ -8,7 +8,7 @@ obj-y += linked_dtb.o
targets := linux.bin linux.bin.gz simpleImage.%
-OBJCOPYFLAGS := -O binary
+OBJCOPYFLAGS := -R .note -R .comment -R .note.gnu.build-id -O binary
# Ensure system.dtb exists
$(obj)/linked_dtb.o: $(obj)/system.dtb
^ permalink raw reply related [flat|nested] 139+ messages in thread* Re: [PATCH 3.2 000/131] 3.2.63-rc1 review
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (130 preceding siblings ...)
2014-09-11 12:32 ` [PATCH 3.2 131/131] microblaze: Fix makefile to work with latest toolchain Ben Hutchings
@ 2014-09-11 13:30 ` Guenter Roeck
2014-09-12 11:59 ` Satoru Takeuchi
2014-09-13 22:39 ` Ben Hutchings
2014-09-11 23:13 ` Ben Hutchings
132 siblings, 2 replies; 139+ messages in thread
From: Guenter Roeck @ 2014-09-11 13:30 UTC (permalink / raw)
To: Ben Hutchings, linux-kernel, stable; +Cc: torvalds, Satoru Takeuchi, akpm
On 09/11/2014 05:32 AM, Ben Hutchings wrote:
> This is the start of the stable review cycle for the 3.2.63 release.
> There are 131 patches in this series, which will be posted as responses
> to this one. If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Sat Sep 13 12:32:13 UTC 2014.
> Anything received after that time might be too late.
>
Build results:
total: 111 pass: 106 fail: 5
Failed builds:
microblaze:mmu_defconfig
microblaze:nommu_defconfig
mips:allmodconfig
xtensa:defconfig
xtensa:allmodconfig
Qemu test results:
total: 18 pass: 17 fail: 1
Failed tests:
microblaze:microblaze_defconfig
Results are as expected and an improvement over previous releases,
where sparc64:allmodconfig used to fail as well. The failing qemu
test was added to the list of tests only recently and is a known
problem.
Guenter
^ permalink raw reply [flat|nested] 139+ messages in thread* Re: [PATCH 3.2 000/131] 3.2.63-rc1 review
2014-09-11 13:30 ` [PATCH 3.2 000/131] 3.2.63-rc1 review Guenter Roeck
@ 2014-09-12 11:59 ` Satoru Takeuchi
2014-09-13 22:39 ` Ben Hutchings
2014-09-13 22:39 ` Ben Hutchings
1 sibling, 1 reply; 139+ messages in thread
From: Satoru Takeuchi @ 2014-09-12 11:59 UTC (permalink / raw)
To: Guenter Roeck
Cc: Ben Hutchings, linux-kernel, stable, torvalds, Satoru Takeuchi,
akpm
At Thu, 11 Sep 2014 06:30:06 -0700,
Guenter Roeck wrote:
>
> On 09/11/2014 05:32 AM, Ben Hutchings wrote:
> > This is the start of the stable review cycle for the 3.2.63 release.
> > There are 131 patches in this series, which will be posted as responses
> > to this one. If anyone has any issues with these being applied, please
> > let me know.
> >
> > Responses should be made by Sat Sep 13 12:32:13 UTC 2014.
> > Anything received after that time might be too late.
> >
>
> Build results:
> total: 111 pass: 106 fail: 5
> Failed builds:
> microblaze:mmu_defconfig
> microblaze:nommu_defconfig
> mips:allmodconfig
> xtensa:defconfig
> xtensa:allmodconfig
>
> Qemu test results:
> total: 18 pass: 17 fail: 1
> Failed tests:
> microblaze:microblaze_defconfig
>
> Results are as expected and an improvement over previous releases,
> where sparc64:allmodconfig used to fail as well. The failing qemu
> test was added to the list of tests only recently and is a known
> problem.
>
> Guenter
Plus, this kernel passed my test.
- Test Cases:
- Build this kernel.
- Boot this kernel.
- Build the latest mainline kernel with this kernel.
- Test Tool:
https://github.com/satoru-takeuchi/test-linux-stable
- Test Result (kernel .config, ktest config and test log):
http://satoru-takeuchi.org/test-linux-stable/results/<version>-<test datetime>.tar.xz
- Build Environment:
- OS: Debian Jessy x86_64
- CPU: Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz x 4
- memory: 8GB
- Test Target Environment:
- Debian Jessy x86_64 (KVM guest on the Build Environment)
- # of vCPU: 2
- memory: 2GB
Thanks,
Satoru
^ permalink raw reply [flat|nested] 139+ messages in thread
* Re: [PATCH 3.2 000/131] 3.2.63-rc1 review
2014-09-12 11:59 ` Satoru Takeuchi
@ 2014-09-13 22:39 ` Ben Hutchings
0 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-13 22:39 UTC (permalink / raw)
To: Satoru Takeuchi; +Cc: Guenter Roeck, linux-kernel, stable, torvalds, akpm
[-- Attachment #1: Type: text/plain, Size: 2049 bytes --]
On Fri, 2014-09-12 at 20:59 +0900, Satoru Takeuchi wrote:
> At Thu, 11 Sep 2014 06:30:06 -0700,
> Guenter Roeck wrote:
> >
> > On 09/11/2014 05:32 AM, Ben Hutchings wrote:
> > > This is the start of the stable review cycle for the 3.2.63 release.
> > > There are 131 patches in this series, which will be posted as responses
> > > to this one. If anyone has any issues with these being applied, please
> > > let me know.
> > >
> > > Responses should be made by Sat Sep 13 12:32:13 UTC 2014.
> > > Anything received after that time might be too late.
> > >
> >
> > Build results:
> > total: 111 pass: 106 fail: 5
> > Failed builds:
> > microblaze:mmu_defconfig
> > microblaze:nommu_defconfig
> > mips:allmodconfig
> > xtensa:defconfig
> > xtensa:allmodconfig
> >
> > Qemu test results:
> > total: 18 pass: 17 fail: 1
> > Failed tests:
> > microblaze:microblaze_defconfig
> >
> > Results are as expected and an improvement over previous releases,
> > where sparc64:allmodconfig used to fail as well. The failing qemu
> > test was added to the list of tests only recently and is a known
> > problem.
> >
> > Guenter
>
> Plus, this kernel passed my test.
>
> - Test Cases:
> - Build this kernel.
> - Boot this kernel.
> - Build the latest mainline kernel with this kernel.
>
> - Test Tool:
> https://github.com/satoru-takeuchi/test-linux-stable
>
> - Test Result (kernel .config, ktest config and test log):
> http://satoru-takeuchi.org/test-linux-stable/results/<version>-<test datetime>.tar.xz
>
> - Build Environment:
> - OS: Debian Jessy x86_64
> - CPU: Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz x 4
> - memory: 8GB
>
> - Test Target Environment:
> - Debian Jessy x86_64 (KVM guest on the Build Environment)
> - # of vCPU: 2
> - memory: 2GB
Thanks for testing!
Ben.
--
Ben Hutchings
I'm always amazed by the number of people who take up solipsism because
they heard someone else explain it. - E*Borg on alt.fan.pratchett
[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 811 bytes --]
^ permalink raw reply [flat|nested] 139+ messages in thread
* Re: [PATCH 3.2 000/131] 3.2.63-rc1 review
2014-09-11 13:30 ` [PATCH 3.2 000/131] 3.2.63-rc1 review Guenter Roeck
2014-09-12 11:59 ` Satoru Takeuchi
@ 2014-09-13 22:39 ` Ben Hutchings
1 sibling, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-13 22:39 UTC (permalink / raw)
To: Guenter Roeck; +Cc: linux-kernel, stable, torvalds, Satoru Takeuchi, akpm
[-- Attachment #1: Type: text/plain, Size: 1208 bytes --]
On Thu, 2014-09-11 at 06:30 -0700, Guenter Roeck wrote:
> On 09/11/2014 05:32 AM, Ben Hutchings wrote:
> > This is the start of the stable review cycle for the 3.2.63 release.
> > There are 131 patches in this series, which will be posted as responses
> > to this one. If anyone has any issues with these being applied, please
> > let me know.
> >
> > Responses should be made by Sat Sep 13 12:32:13 UTC 2014.
> > Anything received after that time might be too late.
> >
>
> Build results:
> total: 111 pass: 106 fail: 5
> Failed builds:
> microblaze:mmu_defconfig
> microblaze:nommu_defconfig
> mips:allmodconfig
> xtensa:defconfig
> xtensa:allmodconfig
>
> Qemu test results:
> total: 18 pass: 17 fail: 1
> Failed tests:
> microblaze:microblaze_defconfig
>
> Results are as expected and an improvement over previous releases,
> where sparc64:allmodconfig used to fail as well. The failing qemu
> test was added to the list of tests only recently and is a known
> problem.
Thanks for testing!
Ben.
--
Ben Hutchings
I'm always amazed by the number of people who take up solipsism because
they heard someone else explain it. - E*Borg on alt.fan.pratchett
[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 811 bytes --]
^ permalink raw reply [flat|nested] 139+ messages in thread
* Re: [PATCH 3.2 000/131] 3.2.63-rc1 review
2014-09-11 12:32 [PATCH 3.2 000/131] 3.2.63-rc1 review Ben Hutchings
` (131 preceding siblings ...)
2014-09-11 13:30 ` [PATCH 3.2 000/131] 3.2.63-rc1 review Guenter Roeck
@ 2014-09-11 23:13 ` Ben Hutchings
132 siblings, 0 replies; 139+ messages in thread
From: Ben Hutchings @ 2014-09-11 23:13 UTC (permalink / raw)
To: linux-kernel; +Cc: stable, torvalds, Satoru Takeuchi, Guenter Roeck, akpm
[-- Attachment #1.1: Type: text/plain, Size: 171 bytes --]
This is the combined patch for 3.2.63-rc1 relative to 3.2.62.
Ben.
--
Ben Hutchings
It is easier to change the specification to fit the program than vice versa.
[-- Attachment #1.2: linux-3.2.63-rc1.patch --]
[-- Type: text/x-patch, Size: 182327 bytes --]
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 936699e..15806ef 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -2018,8 +2018,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
-------------------
Module for sound cards based on the Asus AV66/AV100/AV200 chips,
- i.e., Xonar D1, DX, D2, D2X, DS, Essence ST (Deluxe), Essence STX,
- HDAV1.3 (Deluxe), and HDAV1.3 Slim.
+ i.e., Xonar D1, DX, D2, D2X, DS, DSX, Essence ST (Deluxe),
+ Essence STX (II), HDAV1.3 (Deluxe), and HDAV1.3 Slim.
This module supports autoprobe and multiple cards.
diff --git a/Documentation/stable_kernel_rules.txt b/Documentation/stable_kernel_rules.txt
index 22bf11b..53feeac 100644
--- a/Documentation/stable_kernel_rules.txt
+++ b/Documentation/stable_kernel_rules.txt
@@ -29,6 +29,9 @@ Rules on what kind of patches are accepted, and which ones are not, into the
Procedure for submitting patches to the -stable tree:
+ - If the patch covers files in net/ or drivers/net please follow netdev stable
+ submission guidelines as described in
+ Documentation/networking/netdev-FAQ.txt
- Send the patch, after verifying that it follows the above rules, to
stable@vger.kernel.org. You must note the upstream commit ID in the
changelog of your submission.
diff --git a/Documentation/x86/x86_64/mm.txt b/Documentation/x86/x86_64/mm.txt
index d6498e3..f33a936 100644
--- a/Documentation/x86/x86_64/mm.txt
+++ b/Documentation/x86/x86_64/mm.txt
@@ -12,6 +12,8 @@ ffffc90000000000 - ffffe8ffffffffff (=45 bits) vmalloc/ioremap space
ffffe90000000000 - ffffe9ffffffffff (=40 bits) hole
ffffea0000000000 - ffffeaffffffffff (=40 bits) virtual memory map (1TB)
... unused hole ...
+ffffff0000000000 - ffffff7fffffffff (=39 bits) %esp fixup stacks
+... unused hole ...
ffffffff80000000 - ffffffffa0000000 (=512 MB) kernel text mapping, from phys 0
ffffffffa0000000 - fffffffffff00000 (=1536 MB) module mapping space
diff --git a/Makefile b/Makefile
index 30a5c65..c5a777e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
VERSION = 3
PATCHLEVEL = 2
-SUBLEVEL = 62
-EXTRAVERSION =
+SUBLEVEL = 63
+EXTRAVERSION = -rc1
NAME = Saber-toothed Squirrel
# *DOCUMENTATION*
@@ -592,6 +592,8 @@ KBUILD_CFLAGS += -fomit-frame-pointer
endif
endif
+KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments)
+
ifdef CONFIG_DEBUG_INFO
KBUILD_CFLAGS += -g
KBUILD_AFLAGS += -gdwarf-2
diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
index 9a8531e..9d95a46 100644
--- a/arch/arm/kernel/entry-header.S
+++ b/arch/arm/kernel/entry-header.S
@@ -76,26 +76,21 @@
#ifndef CONFIG_THUMB2_KERNEL
.macro svc_exit, rpsr
msr spsr_cxsf, \rpsr
-#if defined(CONFIG_CPU_V6)
- ldr r0, [sp]
- strex r1, r2, [sp] @ clear the exclusive monitor
- ldmib sp, {r1 - pc}^ @ load r1 - pc, cpsr
-#elif defined(CONFIG_CPU_32v6K)
- clrex @ clear the exclusive monitor
- ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr
-#else
- ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr
+#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_32v6K)
+ @ We must avoid clrex due to Cortex-A15 erratum #830321
+ sub r0, sp, #4 @ uninhabited address
+ strex r1, r2, [r0] @ clear the exclusive monitor
#endif
+ ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr
.endm
.macro restore_user_regs, fast = 0, offset = 0
ldr r1, [sp, #\offset + S_PSR] @ get calling cpsr
ldr lr, [sp, #\offset + S_PC]! @ get pc
msr spsr_cxsf, r1 @ save in spsr_svc
-#if defined(CONFIG_CPU_V6)
+#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_32v6K)
+ @ We must avoid clrex due to Cortex-A15 erratum #830321
strex r1, r2, [sp] @ clear the exclusive monitor
-#elif defined(CONFIG_CPU_32v6K)
- clrex @ clear the exclusive monitor
#endif
.if \fast
ldmdb sp, {r1 - lr}^ @ get calling r1 - lr
@@ -123,7 +118,10 @@
.macro svc_exit, rpsr
ldr lr, [sp, #S_SP] @ top of the stack
ldrd r0, r1, [sp, #S_LR] @ calling lr and pc
- clrex @ clear the exclusive monitor
+
+ @ We must avoid clrex due to Cortex-A15 erratum #830321
+ strex r2, r1, [sp, #S_LR] @ clear the exclusive monitor
+
stmdb lr!, {r0, r1, \rpsr} @ calling lr and rfe context
ldmia sp, {r0 - r12}
mov sp, lr
@@ -132,13 +130,16 @@
.endm
.macro restore_user_regs, fast = 0, offset = 0
- clrex @ clear the exclusive monitor
mov r2, sp
load_user_sp_lr r2, r3, \offset + S_SP @ calling sp, lr
ldr r1, [sp, #\offset + S_PSR] @ get calling cpsr
ldr lr, [sp, #\offset + S_PC] @ get pc
add sp, sp, #\offset + S_SP
msr spsr_cxsf, r1 @ save in spsr_svc
+
+ @ We must avoid clrex due to Cortex-A15 erratum #830321
+ strex r1, r2, [sp] @ clear the exclusive monitor
+
.if \fast
ldmdb sp, {r1 - r12} @ get calling r1 - r12
.else
diff --git a/arch/arm/mach-omap2/control.c b/arch/arm/mach-omap2/control.c
index e34d27f..724f823 100644
--- a/arch/arm/mach-omap2/control.c
+++ b/arch/arm/mach-omap2/control.c
@@ -282,7 +282,8 @@ void omap3_save_scratchpad_contents(void)
scratchpad_contents.public_restore_ptr =
virt_to_phys(omap3_restore_3630);
else if (omap_rev() != OMAP3430_REV_ES3_0 &&
- omap_rev() != OMAP3430_REV_ES3_1)
+ omap_rev() != OMAP3430_REV_ES3_1 &&
+ omap_rev() != OMAP3430_REV_ES3_1_2)
scratchpad_contents.public_restore_ptr =
virt_to_phys(omap3_restore);
else
diff --git a/arch/arm/mm/abort-ev6.S b/arch/arm/mm/abort-ev6.S
index 8074199..5d777a5 100644
--- a/arch/arm/mm/abort-ev6.S
+++ b/arch/arm/mm/abort-ev6.S
@@ -17,12 +17,6 @@
*/
.align 5
ENTRY(v6_early_abort)
-#ifdef CONFIG_CPU_V6
- sub r1, sp, #4 @ Get unused stack location
- strex r0, r1, [r1] @ Clear the exclusive monitor
-#elif defined(CONFIG_CPU_32v6K)
- clrex
-#endif
mrc p15, 0, r1, c5, c0, 0 @ get FSR
mrc p15, 0, r0, c6, c0, 0 @ get FAR
/*
diff --git a/arch/arm/mm/abort-ev7.S b/arch/arm/mm/abort-ev7.S
index 7033752..4812ad0 100644
--- a/arch/arm/mm/abort-ev7.S
+++ b/arch/arm/mm/abort-ev7.S
@@ -13,12 +13,6 @@
*/
.align 5
ENTRY(v7_early_abort)
- /*
- * The effect of data aborts on on the exclusive access monitor are
- * UNPREDICTABLE. Do a CLREX to clear the state
- */
- clrex
-
mrc p15, 0, r1, c5, c0, 0 @ get FSR
mrc p15, 0, r0, c6, c0, 0 @ get FAR
diff --git a/arch/microblaze/boot/Makefile b/arch/microblaze/boot/Makefile
index 4c4e58e..5365519 100644
--- a/arch/microblaze/boot/Makefile
+++ b/arch/microblaze/boot/Makefile
@@ -8,7 +8,7 @@ obj-y += linked_dtb.o
targets := linux.bin linux.bin.gz simpleImage.%
-OBJCOPYFLAGS := -O binary
+OBJCOPYFLAGS := -R .note -R .comment -R .note.gnu.build-id -O binary
# Ensure system.dtb exists
$(obj)/linked_dtb.o: $(obj)/system.dtb
diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c
index 2d9028f..3c5f61c 100644
--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -266,6 +266,18 @@ static irqreturn_t octeon_rlm_interrupt(int cpl, void *dev_id)
}
#endif
+static char __read_mostly octeon_system_type[80];
+
+static int __init init_octeon_system_type(void)
+{
+ snprintf(octeon_system_type, sizeof(octeon_system_type), "%s (%s)",
+ cvmx_board_type_to_string(octeon_bootinfo->board_type),
+ octeon_model_get_string(read_c0_prid()));
+
+ return 0;
+}
+early_initcall(init_octeon_system_type);
+
/**
* Return a string representing the system type
*
@@ -273,11 +285,7 @@ static irqreturn_t octeon_rlm_interrupt(int cpl, void *dev_id)
*/
const char *octeon_board_type_string(void)
{
- static char name[80];
- sprintf(name, "%s (%s)",
- cvmx_board_type_to_string(octeon_bootinfo->board_type),
- octeon_model_get_string(read_c0_prid()));
- return name;
+ return octeon_system_type;
}
const char *get_system_type(void)
diff --git a/arch/mips/kernel/irq-gic.c b/arch/mips/kernel/irq-gic.c
index 0c527f6..e132bfd 100644
--- a/arch/mips/kernel/irq-gic.c
+++ b/arch/mips/kernel/irq-gic.c
@@ -166,11 +166,13 @@ static void __init gic_setup_intr(unsigned int intr, unsigned int cpu,
{
/* Setup Intr to Pin mapping */
if (pin & GIC_MAP_TO_NMI_MSK) {
+ int i;
+
GICWRITE(GIC_REG_ADDR(SHARED, GIC_SH_MAP_TO_PIN(intr)), pin);
/* FIXME: hack to route NMI to all cpu's */
- for (cpu = 0; cpu < NR_CPUS; cpu += 32) {
+ for (i = 0; i < NR_CPUS; i += 32) {
GICWRITE(GIC_REG_ADDR(SHARED,
- GIC_SH_MAP_TO_VPE_REG_OFF(intr, cpu)),
+ GIC_SH_MAP_TO_VPE_REG_OFF(intr, i)),
0xffffffff);
}
} else {
diff --git a/arch/mips/kernel/perf_event_mipsxx.c b/arch/mips/kernel/perf_event_mipsxx.c
index 315fc0b..dc6ffe0 100644
--- a/arch/mips/kernel/perf_event_mipsxx.c
+++ b/arch/mips/kernel/perf_event_mipsxx.c
@@ -162,11 +162,6 @@ static unsigned int counters_total_to_per_cpu(unsigned int counters)
return counters >> vpe_shift();
}
-static unsigned int counters_per_cpu_to_total(unsigned int counters)
-{
- return counters << vpe_shift();
-}
-
#else /* !CONFIG_MIPS_MT_SMP */
#define vpe_id() 0
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 4e6ea1f..e56c692 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -162,6 +162,7 @@ int ptrace_setfpregs(struct task_struct *child, __u32 __user *data)
__get_user(fregs[i], i + (__u64 __user *) data);
__get_user(child->thread.fpu.fcr31, data + 64);
+ child->thread.fpu.fcr31 &= ~FPU_CSR_ALL_X;
/* FIR may not be written. */
@@ -452,7 +453,7 @@ long arch_ptrace(struct task_struct *child, long request,
break;
#endif
case FPC_CSR:
- child->thread.fpu.fcr31 = data;
+ child->thread.fpu.fcr31 = data & ~FPU_CSR_ALL_X;
break;
case DSP_BASE ... DSP_BASE + 5: {
dspreg_t *dregs;
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 7d5ac0b..fe425bb 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -12,6 +12,7 @@
#include <linux/highmem.h>
#include <linux/kernel.h>
#include <linux/linkage.h>
+#include <linux/preempt.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/mm.h>
@@ -599,6 +600,7 @@ static void r4k_dma_cache_wback_inv(unsigned long addr, unsigned long size)
/* Catch bad driver code */
BUG_ON(size == 0);
+ preempt_disable();
if (cpu_has_inclusive_pcaches) {
if (size >= scache_size)
r4k_blast_scache();
@@ -619,6 +621,7 @@ static void r4k_dma_cache_wback_inv(unsigned long addr, unsigned long size)
R4600_HIT_CACHEOP_WAR_IMPL;
blast_dcache_range(addr, addr + size);
}
+ preempt_enable();
bc_wback_inv(addr, size);
__sync();
@@ -629,6 +632,7 @@ static void r4k_dma_cache_inv(unsigned long addr, unsigned long size)
/* Catch bad driver code */
BUG_ON(size == 0);
+ preempt_disable();
if (cpu_has_inclusive_pcaches) {
if (size >= scache_size)
r4k_blast_scache();
@@ -653,6 +657,7 @@ static void r4k_dma_cache_inv(unsigned long addr, unsigned long size)
R4600_HIT_CACHEOP_WAR_IMPL;
blast_inv_dcache_range(addr, addr + size);
}
+ preempt_enable();
bc_inv(addr, size);
__sync();
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index e06370f..3ee768e 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -1282,6 +1282,7 @@ static void __cpuinit build_r4000_tlb_refill_handler(void)
}
#ifdef CONFIG_HUGETLB_PAGE
uasm_l_tlb_huge_update(&l, p);
+ UASM_i_LW(&p, K0, 0, K1);
build_huge_update_entries(&p, htlb_info.huge_pte, K1);
build_huge_tlb_write_entry(&p, &l, &r, K0, tlb_random,
htlb_info.restore_scratch);
diff --git a/arch/openrisc/kernel/head.S b/arch/openrisc/kernel/head.S
index c75018d..23a3019 100644
--- a/arch/openrisc/kernel/head.S
+++ b/arch/openrisc/kernel/head.S
@@ -19,6 +19,7 @@
#include <linux/threads.h>
#include <linux/errno.h>
#include <linux/init.h>
+#include <linux/serial_reg.h>
#include <asm/processor.h>
#include <asm/page.h>
#include <asm/mmu.h>
diff --git a/arch/openrisc/kernel/init_task.c b/arch/openrisc/kernel/init_task.c
index 45744a38..ca53408 100644
--- a/arch/openrisc/kernel/init_task.c
+++ b/arch/openrisc/kernel/init_task.c
@@ -17,6 +17,7 @@
#include <linux/init_task.h>
#include <linux/mqueue.h>
+#include <linux/export.h>
static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
diff --git a/arch/openrisc/kernel/irq.c b/arch/openrisc/kernel/irq.c
index 59b3023..4bfead2 100644
--- a/arch/openrisc/kernel/irq.c
+++ b/arch/openrisc/kernel/irq.c
@@ -23,6 +23,7 @@
#include <linux/irq.h>
#include <linux/seq_file.h>
#include <linux/kernel_stat.h>
+#include <linux/export.h>
#include <linux/irqflags.h>
diff --git a/arch/powerpc/include/asm/pte-hash64-64k.h b/arch/powerpc/include/asm/pte-hash64-64k.h
index 59247e8..4ac50bb 100644
--- a/arch/powerpc/include/asm/pte-hash64-64k.h
+++ b/arch/powerpc/include/asm/pte-hash64-64k.h
@@ -40,17 +40,39 @@
#ifndef __ASSEMBLY__
+#include <asm/system.h> /* for smp_rmb() */
+
/*
* With 64K pages on hash table, we have a special PTE format that
* uses a second "half" of the page table to encode sub-page information
* in order to deal with 64K made of 4K HW pages. Thus we override the
* generic accessors and iterators here
*/
-#define __real_pte(e,p) ((real_pte_t) { \
- (e), ((e) & _PAGE_COMBO) ? \
- (pte_val(*((p) + PTRS_PER_PTE))) : 0 })
-#define __rpte_to_hidx(r,index) ((pte_val((r).pte) & _PAGE_COMBO) ? \
- (((r).hidx >> ((index)<<2)) & 0xf) : ((pte_val((r).pte) >> 12) & 0xf))
+#define __real_pte __real_pte
+static inline real_pte_t __real_pte(pte_t pte, pte_t *ptep)
+{
+ real_pte_t rpte;
+
+ rpte.pte = pte;
+ rpte.hidx = 0;
+ if (pte_val(pte) & _PAGE_COMBO) {
+ /*
+ * Make sure we order the hidx load against the _PAGE_COMBO
+ * check. The store side ordering is done in __hash_page_4K
+ */
+ smp_rmb();
+ rpte.hidx = pte_val(*((ptep) + PTRS_PER_PTE));
+ }
+ return rpte;
+}
+
+static inline unsigned long __rpte_to_hidx(real_pte_t rpte, unsigned long index)
+{
+ if ((pte_val(rpte.pte) & _PAGE_COMBO))
+ return (rpte.hidx >> (index<<2)) & 0xf;
+ return (pte_val(rpte.pte) >> 12) & 0xf;
+}
+
#define __rpte_to_pte(r) ((r).pte)
#define __rpte_sub_valid(rpte, index) \
(pte_val(rpte.pte) & (_PAGE_HPTE_SUB0 >> (index)))
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 458ed3b..12659ab 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -363,7 +363,6 @@ static pgprot_t __pci_mmap_set_pgprot(struct pci_dev *dev, struct resource *rp,
enum pci_mmap_state mmap_state,
int write_combine)
{
- unsigned long prot = pgprot_val(protection);
/* Write combine is always 0 on non-memory space mappings. On
* memory space, if the user didn't pass 1, we check for a
@@ -380,9 +379,9 @@ static pgprot_t __pci_mmap_set_pgprot(struct pci_dev *dev, struct resource *rp,
/* XXX would be nice to have a way to ask for write-through */
if (write_combine)
- return pgprot_noncached_wc(prot);
+ return pgprot_noncached_wc(protection);
else
- return pgprot_noncached(prot);
+ return pgprot_noncached(protection);
}
/*
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index e94b57f..75dd32e 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -218,7 +218,8 @@ static void __meminit vmemmap_create_mapping(unsigned long start,
unsigned long phys)
{
int mapped = htab_bolt_mapping(start, start + page_size, phys,
- PAGE_KERNEL, mmu_vmemmap_psize,
+ pgprot_val(PAGE_KERNEL),
+ mmu_vmemmap_psize,
mmu_kernel_ssize);
BUG_ON(mapped < 0);
}
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 24523dc..f4b78a3 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -600,8 +600,8 @@ static int __cpuinit cpu_numa_callback(struct notifier_block *nfb,
case CPU_UP_CANCELED:
case CPU_UP_CANCELED_FROZEN:
unmap_cpu_from_node(lcpu);
- break;
ret = NOTIFY_OK;
+ break;
#endif
}
return ret;
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index a3c40e8..aed3d91 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -119,6 +119,7 @@ config S390
select ARCH_INLINE_WRITE_UNLOCK_BH
select ARCH_INLINE_WRITE_UNLOCK_IRQ
select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
+ select ARCH_SUPPORTS_ATOMIC_RMW
config SCHED_OMIT_FRAME_POINTER
def_bool y
diff --git a/arch/sparc/include/asm/Kbuild b/arch/sparc/include/asm/Kbuild
index 2c2e388..39a0b4f 100644
--- a/arch/sparc/include/asm/Kbuild
+++ b/arch/sparc/include/asm/Kbuild
@@ -21,3 +21,4 @@ generic-y += div64.h
generic-y += local64.h
generic-y += irq_regs.h
generic-y += local.h
+generic-y += types.h
diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
index ddbbea3..7ee5a1c 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -25,7 +25,8 @@
/* The kernel image occupies 0x4000000 to 0x6000000 (4MB --> 96MB).
* The page copy blockops can use 0x6000000 to 0x8000000.
- * The TSB is mapped in the 0x8000000 to 0xa000000 range.
+ * The 8K TSB is mapped in the 0x8000000 to 0x8400000 range.
+ * The 4M TSB is mapped in the 0x8400000 to 0x8800000 range.
* The PROM resides in an area spanning 0xf0000000 to 0x100000000.
* The vmalloc area spans 0x100000000 to 0x200000000.
* Since modules need to be in the lowest 32-bits of the address space,
@@ -34,7 +35,8 @@
* 0x400000000.
*/
#define TLBTEMP_BASE _AC(0x0000000006000000,UL)
-#define TSBMAP_BASE _AC(0x0000000008000000,UL)
+#define TSBMAP_8K_BASE _AC(0x0000000008000000,UL)
+#define TSBMAP_4M_BASE _AC(0x0000000008400000,UL)
#define MODULES_VADDR _AC(0x0000000010000000,UL)
#define MODULES_LEN _AC(0x00000000e0000000,UL)
#define MODULES_END _AC(0x00000000f0000000,UL)
diff --git a/arch/sparc/include/asm/tlbflush_64.h b/arch/sparc/include/asm/tlbflush_64.h
index f0d6a97..1a4bb97 100644
--- a/arch/sparc/include/asm/tlbflush_64.h
+++ b/arch/sparc/include/asm/tlbflush_64.h
@@ -35,6 +35,8 @@ static inline void flush_tlb_range(struct vm_area_struct *vma,
{
}
+void flush_tlb_kernel_range(unsigned long start, unsigned long end);
+
#define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
extern void flush_tlb_pending(void);
@@ -49,11 +51,6 @@ extern void __flush_tlb_kernel_range(unsigned long start, unsigned long end);
#ifndef CONFIG_SMP
-#define flush_tlb_kernel_range(start,end) \
-do { flush_tsb_kernel_range(start,end); \
- __flush_tlb_kernel_range(start,end); \
-} while (0)
-
static inline void global_flush_tlb_page(struct mm_struct *mm, unsigned long vaddr)
{
__flush_tlb_page(CTX_HWBITS(mm->context), vaddr);
@@ -64,11 +61,6 @@ static inline void global_flush_tlb_page(struct mm_struct *mm, unsigned long vad
extern void smp_flush_tlb_kernel_range(unsigned long start, unsigned long end);
extern void smp_flush_tlb_page(struct mm_struct *mm, unsigned long vaddr);
-#define flush_tlb_kernel_range(start, end) \
-do { flush_tsb_kernel_range(start,end); \
- smp_flush_tlb_kernel_range(start, end); \
-} while (0)
-
#define global_flush_tlb_page(mm, vaddr) \
smp_flush_tlb_page(mm, vaddr)
diff --git a/arch/sparc/include/asm/types.h b/arch/sparc/include/asm/types.h
deleted file mode 100644
index 91e5a03..0000000
--- a/arch/sparc/include/asm/types.h
+++ /dev/null
@@ -1,23 +0,0 @@
-#ifndef _SPARC_TYPES_H
-#define _SPARC_TYPES_H
-/*
- * This file is never included by application software unless
- * explicitly requested (e.g., via linux/types.h) in which case the
- * application is Linux specific so (user-) name space pollution is
- * not a major issue. However, for interoperability, libraries still
- * need to be careful to avoid a name clashes.
- */
-
-#if defined(__sparc__)
-
-#include <asm-generic/int-ll64.h>
-
-#ifndef __ASSEMBLY__
-
-typedef unsigned short umode_t;
-
-#endif /* __ASSEMBLY__ */
-
-#endif /* defined(__sparc__) */
-
-#endif /* defined(_SPARC_TYPES_H) */
diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c
index 435e406..1beaf60 100644
--- a/arch/sparc/kernel/ldc.c
+++ b/arch/sparc/kernel/ldc.c
@@ -1339,7 +1339,7 @@ int ldc_connect(struct ldc_channel *lp)
if (!(lp->flags & LDC_FLAG_ALLOCED_QUEUES) ||
!(lp->flags & LDC_FLAG_REGISTERED_QUEUES) ||
lp->hs_state != LDC_HS_OPEN)
- err = -EINVAL;
+ err = ((lp->hs_state > LDC_HS_OPEN) ? 0 : -EINVAL);
else
err = start_handshake(lp);
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index e21d3c0d..ffd1245 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -151,7 +151,7 @@ void cpu_panic(void)
#define NUM_ROUNDS 64 /* magic value */
#define NUM_ITERS 5 /* likewise */
-static DEFINE_SPINLOCK(itc_sync_lock);
+static DEFINE_RAW_SPINLOCK(itc_sync_lock);
static unsigned long go[SLAVE + 1];
#define DEBUG_TICK_SYNC 0
@@ -259,7 +259,7 @@ static void smp_synchronize_one_tick(int cpu)
go[MASTER] = 0;
membar_safe("#StoreLoad");
- spin_lock_irqsave(&itc_sync_lock, flags);
+ raw_spin_lock_irqsave(&itc_sync_lock, flags);
{
for (i = 0; i < NUM_ROUNDS*NUM_ITERS; i++) {
while (!go[MASTER])
@@ -270,7 +270,7 @@ static void smp_synchronize_one_tick(int cpu)
membar_safe("#StoreLoad");
}
}
- spin_unlock_irqrestore(&itc_sync_lock, flags);
+ raw_spin_unlock_irqrestore(&itc_sync_lock, flags);
}
#if defined(CONFIG_SUN_LDOMS) && defined(CONFIG_HOTPLUG_CPU)
diff --git a/arch/sparc/kernel/sys32.S b/arch/sparc/kernel/sys32.S
index d97f3eb..085c60f 100644
--- a/arch/sparc/kernel/sys32.S
+++ b/arch/sparc/kernel/sys32.S
@@ -87,7 +87,7 @@ SIGN1(sys32_io_submit, compat_sys_io_submit, %o1)
SIGN1(sys32_mq_open, compat_sys_mq_open, %o1)
SIGN1(sys32_select, compat_sys_select, %o0)
SIGN1(sys32_mkdir, sys_mkdir, %o1)
-SIGN3(sys32_futex, compat_sys_futex, %o1, %o2, %o5)
+SIGN1(sys32_futex, compat_sys_futex, %o1)
SIGN1(sys32_sysfs, compat_sys_sysfs, %o0)
SIGN2(sys32_sendfile, compat_sys_sendfile, %o0, %o1)
SIGN2(sys32_sendfile64, compat_sys_sendfile64, %o0, %o1)
diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c
index 76e4ac1..1c90812 100644
--- a/arch/sparc/kernel/unaligned_64.c
+++ b/arch/sparc/kernel/unaligned_64.c
@@ -156,17 +156,23 @@ static unsigned long *fetch_reg_addr(unsigned int reg, struct pt_regs *regs)
unsigned long compute_effective_address(struct pt_regs *regs,
unsigned int insn, unsigned int rd)
{
+ int from_kernel = (regs->tstate & TSTATE_PRIV) != 0;
unsigned int rs1 = (insn >> 14) & 0x1f;
unsigned int rs2 = insn & 0x1f;
- int from_kernel = (regs->tstate & TSTATE_PRIV) != 0;
+ unsigned long addr;
if (insn & 0x2000) {
maybe_flush_windows(rs1, 0, rd, from_kernel);
- return (fetch_reg(rs1, regs) + sign_extend_imm13(insn));
+ addr = (fetch_reg(rs1, regs) + sign_extend_imm13(insn));
} else {
maybe_flush_windows(rs1, rs2, rd, from_kernel);
- return (fetch_reg(rs1, regs) + fetch_reg(rs2, regs));
+ addr = (fetch_reg(rs1, regs) + fetch_reg(rs2, regs));
}
+
+ if (!from_kernel && test_thread_flag(TIF_32BIT))
+ addr &= 0xffffffff;
+
+ return addr;
}
/* This is just to make gcc think die_if_kernel does return... */
diff --git a/arch/sparc/lib/NG2memcpy.S b/arch/sparc/lib/NG2memcpy.S
index 0aed756..e993fc8 100644
--- a/arch/sparc/lib/NG2memcpy.S
+++ b/arch/sparc/lib/NG2memcpy.S
@@ -236,6 +236,7 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
*/
VISEntryHalf
+ membar #Sync
alignaddr %o1, %g0, %g0
add %o1, (64 - 1), %o4
diff --git a/arch/sparc/math-emu/math_32.c b/arch/sparc/math-emu/math_32.c
index aa4d55b..5ce8f2f 100644
--- a/arch/sparc/math-emu/math_32.c
+++ b/arch/sparc/math-emu/math_32.c
@@ -499,7 +499,7 @@ static int do_one_mathemu(u32 insn, unsigned long *pfsr, unsigned long *fregs)
case 0: fsr = *pfsr;
if (IR == -1) IR = 2;
/* fcc is always fcc0 */
- fsr &= ~0xc00; fsr |= (IR << 10); break;
+ fsr &= ~0xc00; fsr |= (IR << 10);
*pfsr = fsr;
break;
case 1: rd->s = IR; break;
diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c
index 504c062..2c0b966 100644
--- a/arch/sparc/mm/fault_64.c
+++ b/arch/sparc/mm/fault_64.c
@@ -95,38 +95,51 @@ static unsigned int get_user_insn(unsigned long tpc)
pte_t *ptep, pte;
unsigned long pa;
u32 insn = 0;
- unsigned long pstate;
- if (pgd_none(*pgdp))
- goto outret;
+ if (pgd_none(*pgdp) || unlikely(pgd_bad(*pgdp)))
+ goto out;
pudp = pud_offset(pgdp, tpc);
- if (pud_none(*pudp))
- goto outret;
- pmdp = pmd_offset(pudp, tpc);
- if (pmd_none(*pmdp))
- goto outret;
-
- /* This disables preemption for us as well. */
- __asm__ __volatile__("rdpr %%pstate, %0" : "=r" (pstate));
- __asm__ __volatile__("wrpr %0, %1, %%pstate"
- : : "r" (pstate), "i" (PSTATE_IE));
- ptep = pte_offset_map(pmdp, tpc);
- pte = *ptep;
- if (!pte_present(pte))
+ if (pud_none(*pudp) || unlikely(pud_bad(*pudp)))
goto out;
- pa = (pte_pfn(pte) << PAGE_SHIFT);
- pa += (tpc & ~PAGE_MASK);
-
- /* Use phys bypass so we don't pollute dtlb/dcache. */
- __asm__ __volatile__("lduwa [%1] %2, %0"
- : "=r" (insn)
- : "r" (pa), "i" (ASI_PHYS_USE_EC));
+ /* This disables preemption for us as well. */
+ local_irq_disable();
+ pmdp = pmd_offset(pudp, tpc);
+ if (pmd_none(*pmdp) || unlikely(pmd_bad(*pmdp)))
+ goto out_irq_enable;
+
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+ if (pmd_trans_huge(*pmdp)) {
+ if (pmd_trans_splitting(*pmdp))
+ goto out_irq_enable;
+
+ pa = pmd_pfn(*pmdp) << PAGE_SHIFT;
+ pa += tpc & ~HPAGE_MASK;
+
+ /* Use phys bypass so we don't pollute dtlb/dcache. */
+ __asm__ __volatile__("lduwa [%1] %2, %0"
+ : "=r" (insn)
+ : "r" (pa), "i" (ASI_PHYS_USE_EC));
+ } else
+#endif
+ {
+ ptep = pte_offset_map(pmdp, tpc);
+ pte = *ptep;
+ if (pte_present(pte)) {
+ pa = (pte_pfn(pte) << PAGE_SHIFT);
+ pa += (tpc & ~PAGE_MASK);
+
+ /* Use phys bypass so we don't pollute dtlb/dcache. */
+ __asm__ __volatile__("lduwa [%1] %2, %0"
+ : "=r" (insn)
+ : "r" (pa), "i" (ASI_PHYS_USE_EC));
+ }
+ pte_unmap(ptep);
+ }
+out_irq_enable:
+ local_irq_enable();
out:
- pte_unmap(ptep);
- __asm__ __volatile__("wrpr %0, 0x0, %%pstate" : : "r" (pstate));
-outret:
return insn;
}
@@ -154,7 +167,8 @@ show_signal_msg(struct pt_regs *regs, int sig, int code,
extern unsigned long compute_effective_address(struct pt_regs *, unsigned int, unsigned int);
static void do_fault_siginfo(int code, int sig, struct pt_regs *regs,
- unsigned int insn, int fault_code)
+ unsigned long fault_addr, unsigned int insn,
+ int fault_code)
{
unsigned long addr;
siginfo_t info;
@@ -162,10 +176,18 @@ static void do_fault_siginfo(int code, int sig, struct pt_regs *regs,
info.si_code = code;
info.si_signo = sig;
info.si_errno = 0;
- if (fault_code & FAULT_CODE_ITLB)
+ if (fault_code & FAULT_CODE_ITLB) {
addr = regs->tpc;
- else
- addr = compute_effective_address(regs, insn, 0);
+ } else {
+ /* If we were able to probe the faulting instruction, use it
+ * to compute a precise fault address. Otherwise use the fault
+ * time provided address which may only have page granularity.
+ */
+ if (insn)
+ addr = compute_effective_address(regs, insn, 0);
+ else
+ addr = fault_addr;
+ }
info.si_addr = (void __user *) addr;
info.si_trapno = 0;
@@ -240,7 +262,7 @@ static void __kprobes do_kernel_fault(struct pt_regs *regs, int si_code,
/* The si_code was set to make clear whether
* this was a SEGV_MAPERR or SEGV_ACCERR fault.
*/
- do_fault_siginfo(si_code, SIGSEGV, regs, insn, fault_code);
+ do_fault_siginfo(si_code, SIGSEGV, regs, address, insn, fault_code);
return;
}
@@ -260,18 +282,6 @@ static void noinline __kprobes bogus_32bit_fault_tpc(struct pt_regs *regs)
show_regs(regs);
}
-static void noinline __kprobes bogus_32bit_fault_address(struct pt_regs *regs,
- unsigned long addr)
-{
- static int times;
-
- if (times++ < 10)
- printk(KERN_ERR "FAULT[%s:%d]: 32-bit process "
- "reports 64-bit fault address [%lx]\n",
- current->comm, current->pid, addr);
- show_regs(regs);
-}
-
asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
{
struct mm_struct *mm = current->mm;
@@ -299,10 +309,8 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
goto intr_or_no_mm;
}
}
- if (unlikely((address >> 32) != 0)) {
- bogus_32bit_fault_address(regs, address);
+ if (unlikely((address >> 32) != 0))
goto intr_or_no_mm;
- }
}
if (regs->tstate & TSTATE_PRIV) {
@@ -492,7 +500,7 @@ do_sigbus:
* Send a sigbus, regardless of whether we were in kernel
* or user mode.
*/
- do_fault_siginfo(BUS_ADRERR, SIGBUS, regs, insn, fault_code);
+ do_fault_siginfo(BUS_ADRERR, SIGBUS, regs, address, insn, fault_code);
/* Kernel mode? Handle exceptions or die */
if (regs->tstate & TSTATE_PRIV)
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index b4989f9..d2c5737 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -309,6 +309,10 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *
tsb_index = MM_TSB_BASE;
tsb_hash_shift = PAGE_SHIFT;
+ /* Don't insert a non-valid PTE into the TSB, we'll deadlock. */
+ if (!(pte_val(pte) & _PAGE_VALID))
+ return;
+
spin_lock_irqsave(&mm->context.lock, flags);
#ifdef CONFIG_HUGETLB_PAGE
@@ -2436,3 +2440,26 @@ void __flush_tlb_all(void)
__asm__ __volatile__("wrpr %0, 0, %%pstate"
: : "r" (pstate));
}
+
+#ifdef CONFIG_SMP
+#define do_flush_tlb_kernel_range smp_flush_tlb_kernel_range
+#else
+#define do_flush_tlb_kernel_range __flush_tlb_kernel_range
+#endif
+
+void flush_tlb_kernel_range(unsigned long start, unsigned long end)
+{
+ if (start < HI_OBP_ADDRESS && end > LOW_OBP_ADDRESS) {
+ if (start < LOW_OBP_ADDRESS) {
+ flush_tsb_kernel_range(start, LOW_OBP_ADDRESS);
+ do_flush_tlb_kernel_range(start, LOW_OBP_ADDRESS);
+ }
+ if (end > HI_OBP_ADDRESS) {
+ flush_tsb_kernel_range(end, HI_OBP_ADDRESS);
+ do_flush_tlb_kernel_range(end, HI_OBP_ADDRESS);
+ }
+ } else {
+ flush_tsb_kernel_range(start, end);
+ do_flush_tlb_kernel_range(start, end);
+ }
+}
diff --git a/arch/sparc/mm/tsb.c b/arch/sparc/mm/tsb.c
index 3ebcac7..6ddf60b 100644
--- a/arch/sparc/mm/tsb.c
+++ b/arch/sparc/mm/tsb.c
@@ -151,7 +151,19 @@ static void setup_tsb_params(struct mm_struct *mm, unsigned long tsb_idx, unsign
mm->context.tsb_block[tsb_idx].tsb_nentries =
tsb_bytes / sizeof(struct tsb);
- base = TSBMAP_BASE;
+ switch (tsb_idx) {
+ case MM_TSB_BASE:
+ base = TSBMAP_8K_BASE;
+ break;
+#if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE)
+ case MM_TSB_HUGE:
+ base = TSBMAP_4M_BASE;
+ break;
+#endif
+ default:
+ BUG();
+ }
+
tte = pgprot_val(PAGE_KERNEL_LOCKED);
tsb_paddr = __pa(mm->context.tsb_block[tsb_idx].tsb);
BUG_ON(tsb_paddr & (tsb_bytes - 1UL));
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 901447e..28a1bca 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -896,10 +896,27 @@ config VM86
default y
depends on X86_32
---help---
- This option is required by programs like DOSEMU to run 16-bit legacy
- code on X86 processors. It also may be needed by software like
- XFree86 to initialize some video cards via BIOS. Disabling this
- option saves about 6k.
+ This option is required by programs like DOSEMU to run
+ 16-bit real mode legacy code on x86 processors. It also may
+ be needed by software like XFree86 to initialize some video
+ cards via BIOS. Disabling this option saves about 6K.
+
+config X86_16BIT
+ bool "Enable support for 16-bit segments" if EXPERT
+ default y
+ ---help---
+ This option is required by programs like Wine to run 16-bit
+ protected mode legacy code on x86 processors. Disabling
+ this option saves about 300 bytes on i386, or around 6K text
+ plus 16K runtime memory on x86-64,
+
+config X86_ESPFIX32
+ def_bool y
+ depends on X86_16BIT && X86_32
+
+config X86_ESPFIX64
+ def_bool y
+ depends on X86_16BIT && X86_64
config TOSHIBA
tristate "Toshiba Laptop support"
diff --git a/arch/x86/include/asm/espfix.h b/arch/x86/include/asm/espfix.h
new file mode 100644
index 0000000..99efebb
--- /dev/null
+++ b/arch/x86/include/asm/espfix.h
@@ -0,0 +1,16 @@
+#ifndef _ASM_X86_ESPFIX_H
+#define _ASM_X86_ESPFIX_H
+
+#ifdef CONFIG_X86_64
+
+#include <asm/percpu.h>
+
+DECLARE_PER_CPU_READ_MOSTLY(unsigned long, espfix_stack);
+DECLARE_PER_CPU_READ_MOSTLY(unsigned long, espfix_waddr);
+
+extern void init_espfix_bsp(void);
+extern void init_espfix_ap(void);
+
+#endif /* CONFIG_X86_64 */
+
+#endif /* _ASM_X86_ESPFIX_H */
diff --git a/arch/x86/include/asm/irqflags.h b/arch/x86/include/asm/irqflags.h
index bba3cf8..0a8b519 100644
--- a/arch/x86/include/asm/irqflags.h
+++ b/arch/x86/include/asm/irqflags.h
@@ -129,7 +129,7 @@ static inline notrace unsigned long arch_local_irq_save(void)
#define PARAVIRT_ADJUST_EXCEPTION_FRAME /* */
-#define INTERRUPT_RETURN iretq
+#define INTERRUPT_RETURN jmp native_iret
#define USERGS_SYSRET64 \
swapgs; \
sysretq;
diff --git a/arch/x86/include/asm/pgtable_64_types.h b/arch/x86/include/asm/pgtable_64_types.h
index 766ea16..51817fa 100644
--- a/arch/x86/include/asm/pgtable_64_types.h
+++ b/arch/x86/include/asm/pgtable_64_types.h
@@ -59,5 +59,7 @@ typedef struct { pteval_t pte; } pte_t;
#define MODULES_VADDR _AC(0xffffffffa0000000, UL)
#define MODULES_END _AC(0xffffffffff000000, UL)
#define MODULES_LEN (MODULES_END - MODULES_VADDR)
+#define ESPFIX_PGD_ENTRY _AC(-2, UL)
+#define ESPFIX_BASE_ADDR (ESPFIX_PGD_ENTRY << PGDIR_SHIFT)
#endif /* _ASM_X86_PGTABLE_64_DEFS_H */
diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h
index 9756551..8a87336 100644
--- a/arch/x86/include/asm/setup.h
+++ b/arch/x86/include/asm/setup.h
@@ -61,6 +61,8 @@ static inline void x86_ce4100_early_setup(void) { }
#ifndef _SETUP
+#include <asm/espfix.h>
+
/*
* This is set up by the setup-routine at boot-time
*/
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 8baca3c..96efa3e 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -27,6 +27,7 @@ obj-$(CONFIG_X86_32) += sys_i386_32.o i386_ksyms_32.o
obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o
obj-$(CONFIG_X86_64) += vsyscall_emu_64.o
+obj-$(CONFIG_X86_ESPFIX64) += espfix_64.o
obj-y += bootflag.o e820.o
obj-y += pci-dma.o quirks.o topology.o kdebugfs.o
obj-y += alternative.o i8253.o pci-nommu.o hw_breakpoint.o
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index dd52355..0fa4f89 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -527,6 +527,7 @@ syscall_exit:
restore_all:
TRACE_IRQS_IRET
restore_all_notrace:
+#ifdef CONFIG_X86_ESPFIX32
movl PT_EFLAGS(%esp), %eax # mix EFLAGS, SS and CS
# Warning: PT_OLDSS(%esp) contains the wrong/random values if we
# are returning to the kernel.
@@ -537,6 +538,7 @@ restore_all_notrace:
cmpl $((SEGMENT_LDT << 8) | USER_RPL), %eax
CFI_REMEMBER_STATE
je ldt_ss # returning to user-space with LDT SS
+#endif
restore_nocheck:
RESTORE_REGS 4 # skip orig_eax/error_code
irq_return:
@@ -552,6 +554,7 @@ ENTRY(iret_exc)
.long irq_return,iret_exc
.previous
+#ifdef CONFIG_X86_ESPFIX32
CFI_RESTORE_STATE
ldt_ss:
#ifdef CONFIG_PARAVIRT
@@ -595,6 +598,7 @@ ldt_ss:
lss (%esp), %esp /* switch to espfix segment */
CFI_ADJUST_CFA_OFFSET -8
jmp restore_nocheck
+#endif
CFI_ENDPROC
ENDPROC(system_call)
@@ -766,6 +770,7 @@ ENDPROC(ptregs_clone)
* the high word of the segment base from the GDT and swiches to the
* normal stack and adjusts ESP with the matching offset.
*/
+#ifdef CONFIG_X86_ESPFIX32
/* fixup the stack */
mov GDT_ESPFIX_SS + 4, %al /* bits 16..23 */
mov GDT_ESPFIX_SS + 7, %ah /* bits 24..31 */
@@ -775,8 +780,10 @@ ENDPROC(ptregs_clone)
pushl_cfi %eax
lss (%esp), %esp /* switch to the normal stack segment */
CFI_ADJUST_CFA_OFFSET -8
+#endif
.endm
.macro UNWIND_ESPFIX_STACK
+#ifdef CONFIG_X86_ESPFIX32
movl %ss, %eax
/* see if on espfix stack */
cmpw $__ESPFIX_SS, %ax
@@ -787,6 +794,7 @@ ENDPROC(ptregs_clone)
/* switch to normal stack */
FIXUP_ESPFIX_STACK
27:
+#endif
.endm
/*
@@ -1323,11 +1331,13 @@ END(debug)
*/
ENTRY(nmi)
RING0_INT_FRAME
+#ifdef CONFIG_X86_ESPFIX32
pushl_cfi %eax
movl %ss, %eax
cmpw $__ESPFIX_SS, %ax
popl_cfi %eax
je nmi_espfix_stack
+#endif
cmpl $ia32_sysenter_target,(%esp)
je nmi_stack_fixup
pushl_cfi %eax
@@ -1367,6 +1377,7 @@ nmi_debug_stack_check:
FIX_STACK 24, nmi_stack_correct, 1
jmp nmi_stack_correct
+#ifdef CONFIG_X86_ESPFIX32
nmi_espfix_stack:
/* We have a RING0_INT_FRAME here.
*
@@ -1388,6 +1399,7 @@ nmi_espfix_stack:
lss 12+4(%esp), %esp # back to espfix stack
CFI_ADJUST_CFA_OFFSET -24
jmp irq_return
+#endif
CFI_ENDPROC
END(nmi)
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index 6274f5f..4b511ef 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -55,6 +55,7 @@
#include <asm/paravirt.h>
#include <asm/ftrace.h>
#include <asm/percpu.h>
+#include <asm/pgtable_types.h>
/* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this. */
#include <linux/elf-em.h>
@@ -862,17 +863,47 @@ restore_args:
irq_return:
INTERRUPT_RETURN
- .section __ex_table, "a"
- .quad irq_return, bad_iret
- .previous
-
-#ifdef CONFIG_PARAVIRT
ENTRY(native_iret)
+ /*
+ * Are we returning to a stack segment from the LDT? Note: in
+ * 64-bit mode SS:RSP on the exception stack is always valid.
+ */
+#ifdef CONFIG_X86_ESPFIX64
+ testb $4,(SS-RIP)(%rsp)
+ jnz native_irq_return_ldt
+#endif
+
+native_irq_return_iret:
iretq
.section __ex_table,"a"
- .quad native_iret, bad_iret
+ .quad native_irq_return_iret, bad_iret
.previous
+
+#ifdef CONFIG_X86_ESPFIX64
+native_irq_return_ldt:
+ pushq_cfi %rax
+ pushq_cfi %rdi
+ SWAPGS
+ movq PER_CPU_VAR(espfix_waddr),%rdi
+ movq %rax,(0*8)(%rdi) /* RAX */
+ movq (2*8)(%rsp),%rax /* RIP */
+ movq %rax,(1*8)(%rdi)
+ movq (3*8)(%rsp),%rax /* CS */
+ movq %rax,(2*8)(%rdi)
+ movq (4*8)(%rsp),%rax /* RFLAGS */
+ movq %rax,(3*8)(%rdi)
+ movq (6*8)(%rsp),%rax /* SS */
+ movq %rax,(5*8)(%rdi)
+ movq (5*8)(%rsp),%rax /* RSP */
+ movq %rax,(4*8)(%rdi)
+ andl $0xffff0000,%eax
+ popq_cfi %rdi
+ orq PER_CPU_VAR(espfix_stack),%rax
+ SWAPGS
+ movq %rax,%rsp
+ popq_cfi %rax
+ jmp native_irq_return_iret
#endif
.section .fixup,"ax"
@@ -938,9 +969,40 @@ ENTRY(retint_kernel)
call preempt_schedule_irq
jmp exit_intr
#endif
-
CFI_ENDPROC
END(common_interrupt)
+
+ /*
+ * If IRET takes a fault on the espfix stack, then we
+ * end up promoting it to a doublefault. In that case,
+ * modify the stack to make it look like we just entered
+ * the #GP handler from user space, similar to bad_iret.
+ */
+#ifdef CONFIG_X86_ESPFIX64
+ ALIGN
+__do_double_fault:
+ XCPT_FRAME 1 RDI+8
+ movq RSP(%rdi),%rax /* Trap on the espfix stack? */
+ sarq $PGDIR_SHIFT,%rax
+ cmpl $ESPFIX_PGD_ENTRY,%eax
+ jne do_double_fault /* No, just deliver the fault */
+ cmpl $__KERNEL_CS,CS(%rdi)
+ jne do_double_fault
+ movq RIP(%rdi),%rax
+ cmpq $native_irq_return_iret,%rax
+ jne do_double_fault /* This shouldn't happen... */
+ movq PER_CPU_VAR(kernel_stack),%rax
+ subq $(6*8-KERNEL_STACK_OFFSET),%rax /* Reset to original stack */
+ movq %rax,RSP(%rdi)
+ movq $0,(%rax) /* Missing (lost) #GP error code */
+ movq $general_protection,RIP(%rdi)
+ retq
+ CFI_ENDPROC
+END(__do_double_fault)
+#else
+# define __do_double_fault do_double_fault
+#endif
+
/*
* End of kprobes section
*/
@@ -1107,7 +1169,7 @@ zeroentry overflow do_overflow
zeroentry bounds do_bounds
zeroentry invalid_op do_invalid_op
zeroentry device_not_available do_device_not_available
-paranoiderrorentry double_fault do_double_fault
+paranoiderrorentry double_fault __do_double_fault
zeroentry coprocessor_segment_overrun do_coprocessor_segment_overrun
errorentry invalid_TSS do_invalid_TSS
errorentry segment_not_present do_segment_not_present
@@ -1438,7 +1500,7 @@ error_sti:
*/
error_kernelspace:
incl %ebx
- leaq irq_return(%rip),%rcx
+ leaq native_irq_return_iret(%rip),%rcx
cmpq %rcx,RIP+8(%rsp)
je error_swapgs
movl %ecx,%eax /* zero extend */
diff --git a/arch/x86/kernel/espfix_64.c b/arch/x86/kernel/espfix_64.c
new file mode 100644
index 0000000..94d857f
--- /dev/null
+++ b/arch/x86/kernel/espfix_64.c
@@ -0,0 +1,208 @@
+/* ----------------------------------------------------------------------- *
+ *
+ * Copyright 2014 Intel Corporation; author: H. Peter Anvin
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * The IRET instruction, when returning to a 16-bit segment, only
+ * restores the bottom 16 bits of the user space stack pointer. This
+ * causes some 16-bit software to break, but it also leaks kernel state
+ * to user space.
+ *
+ * This works around this by creating percpu "ministacks", each of which
+ * is mapped 2^16 times 64K apart. When we detect that the return SS is
+ * on the LDT, we copy the IRET frame to the ministack and use the
+ * relevant alias to return to userspace. The ministacks are mapped
+ * readonly, so if the IRET fault we promote #GP to #DF which is an IST
+ * vector and thus has its own stack; we then do the fixup in the #DF
+ * handler.
+ *
+ * This file sets up the ministacks and the related page tables. The
+ * actual ministack invocation is in entry_64.S.
+ */
+
+#include <linux/init.h>
+#include <linux/init_task.h>
+#include <linux/kernel.h>
+#include <linux/percpu.h>
+#include <linux/gfp.h>
+#include <linux/random.h>
+#include <asm/pgtable.h>
+#include <asm/pgalloc.h>
+#include <asm/setup.h>
+#include <asm/espfix.h>
+
+/*
+ * Note: we only need 6*8 = 48 bytes for the espfix stack, but round
+ * it up to a cache line to avoid unnecessary sharing.
+ */
+#define ESPFIX_STACK_SIZE (8*8UL)
+#define ESPFIX_STACKS_PER_PAGE (PAGE_SIZE/ESPFIX_STACK_SIZE)
+
+/* There is address space for how many espfix pages? */
+#define ESPFIX_PAGE_SPACE (1UL << (PGDIR_SHIFT-PAGE_SHIFT-16))
+
+#define ESPFIX_MAX_CPUS (ESPFIX_STACKS_PER_PAGE * ESPFIX_PAGE_SPACE)
+#if CONFIG_NR_CPUS > ESPFIX_MAX_CPUS
+# error "Need more than one PGD for the ESPFIX hack"
+#endif
+
+#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO)
+
+/* This contains the *bottom* address of the espfix stack */
+DEFINE_PER_CPU_READ_MOSTLY(unsigned long, espfix_stack);
+DEFINE_PER_CPU_READ_MOSTLY(unsigned long, espfix_waddr);
+
+/* Initialization mutex - should this be a spinlock? */
+static DEFINE_MUTEX(espfix_init_mutex);
+
+/* Page allocation bitmap - each page serves ESPFIX_STACKS_PER_PAGE CPUs */
+#define ESPFIX_MAX_PAGES DIV_ROUND_UP(CONFIG_NR_CPUS, ESPFIX_STACKS_PER_PAGE)
+static void *espfix_pages[ESPFIX_MAX_PAGES];
+
+static __page_aligned_bss pud_t espfix_pud_page[PTRS_PER_PUD]
+ __aligned(PAGE_SIZE);
+
+static unsigned int page_random, slot_random;
+
+/*
+ * This returns the bottom address of the espfix stack for a specific CPU.
+ * The math allows for a non-power-of-two ESPFIX_STACK_SIZE, in which case
+ * we have to account for some amount of padding at the end of each page.
+ */
+static inline unsigned long espfix_base_addr(unsigned int cpu)
+{
+ unsigned long page, slot;
+ unsigned long addr;
+
+ page = (cpu / ESPFIX_STACKS_PER_PAGE) ^ page_random;
+ slot = (cpu + slot_random) % ESPFIX_STACKS_PER_PAGE;
+ addr = (page << PAGE_SHIFT) + (slot * ESPFIX_STACK_SIZE);
+ addr = (addr & 0xffffUL) | ((addr & ~0xffffUL) << 16);
+ addr += ESPFIX_BASE_ADDR;
+ return addr;
+}
+
+#define PTE_STRIDE (65536/PAGE_SIZE)
+#define ESPFIX_PTE_CLONES (PTRS_PER_PTE/PTE_STRIDE)
+#define ESPFIX_PMD_CLONES PTRS_PER_PMD
+#define ESPFIX_PUD_CLONES (65536/(ESPFIX_PTE_CLONES*ESPFIX_PMD_CLONES))
+
+#define PGTABLE_PROT ((_KERNPG_TABLE & ~_PAGE_RW) | _PAGE_NX)
+
+static void init_espfix_random(void)
+{
+ unsigned long rand;
+
+ /*
+ * This is run before the entropy pools are initialized,
+ * but this is hopefully better than nothing.
+ */
+ if (!arch_get_random_long(&rand)) {
+ /* The constant is an arbitrary large prime */
+ rdtscll(rand);
+ rand *= 0xc345c6b72fd16123UL;
+ }
+
+ slot_random = rand % ESPFIX_STACKS_PER_PAGE;
+ page_random = (rand / ESPFIX_STACKS_PER_PAGE)
+ & (ESPFIX_PAGE_SPACE - 1);
+}
+
+void __init init_espfix_bsp(void)
+{
+ pgd_t *pgd_p;
+ pteval_t ptemask;
+
+ ptemask = __supported_pte_mask;
+
+ /* Install the espfix pud into the kernel page directory */
+ pgd_p = &init_level4_pgt[pgd_index(ESPFIX_BASE_ADDR)];
+ pgd_populate(&init_mm, pgd_p, (pud_t *)espfix_pud_page);
+
+ /* Randomize the locations */
+ init_espfix_random();
+
+ /* The rest is the same as for any other processor */
+ init_espfix_ap();
+}
+
+void init_espfix_ap(void)
+{
+ unsigned int cpu, page;
+ unsigned long addr;
+ pud_t pud, *pud_p;
+ pmd_t pmd, *pmd_p;
+ pte_t pte, *pte_p;
+ int n;
+ void *stack_page;
+ pteval_t ptemask;
+
+ /* We only have to do this once... */
+ if (likely(this_cpu_read(espfix_stack)))
+ return; /* Already initialized */
+
+ cpu = smp_processor_id();
+ addr = espfix_base_addr(cpu);
+ page = cpu/ESPFIX_STACKS_PER_PAGE;
+
+ /* Did another CPU already set this up? */
+ stack_page = ACCESS_ONCE(espfix_pages[page]);
+ if (likely(stack_page))
+ goto done;
+
+ mutex_lock(&espfix_init_mutex);
+
+ /* Did we race on the lock? */
+ stack_page = ACCESS_ONCE(espfix_pages[page]);
+ if (stack_page)
+ goto unlock_done;
+
+ ptemask = __supported_pte_mask;
+
+ pud_p = &espfix_pud_page[pud_index(addr)];
+ pud = *pud_p;
+ if (!pud_present(pud)) {
+ pmd_p = (pmd_t *)__get_free_page(PGALLOC_GFP);
+ pud = __pud(__pa(pmd_p) | (PGTABLE_PROT & ptemask));
+ paravirt_alloc_pmd(&init_mm, __pa(pmd_p) >> PAGE_SHIFT);
+ for (n = 0; n < ESPFIX_PUD_CLONES; n++)
+ set_pud(&pud_p[n], pud);
+ }
+
+ pmd_p = pmd_offset(&pud, addr);
+ pmd = *pmd_p;
+ if (!pmd_present(pmd)) {
+ pte_p = (pte_t *)__get_free_page(PGALLOC_GFP);
+ pmd = __pmd(__pa(pte_p) | (PGTABLE_PROT & ptemask));
+ paravirt_alloc_pte(&init_mm, __pa(pte_p) >> PAGE_SHIFT);
+ for (n = 0; n < ESPFIX_PMD_CLONES; n++)
+ set_pmd(&pmd_p[n], pmd);
+ }
+
+ pte_p = pte_offset_kernel(&pmd, addr);
+ stack_page = (void *)__get_free_page(GFP_KERNEL);
+ pte = __pte(__pa(stack_page) | (__PAGE_KERNEL_RO & ptemask));
+ for (n = 0; n < ESPFIX_PTE_CLONES; n++)
+ set_pte(&pte_p[n*PTE_STRIDE], pte);
+
+ /* Job is done for this CPU and any CPU which shares this page */
+ ACCESS_ONCE(espfix_pages[page]) = stack_page;
+
+unlock_done:
+ mutex_unlock(&espfix_init_mutex);
+done:
+ this_cpu_write(espfix_stack, addr);
+ this_cpu_write(espfix_waddr, (unsigned long)stack_page
+ + (addr & ~PAGE_MASK));
+}
diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c
index 3e0ccbf..0a8e65e 100644
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -21,8 +21,6 @@
#include <asm/mmu_context.h>
#include <asm/syscalls.h>
-int sysctl_ldt16 = 0;
-
#ifdef CONFIG_SMP
static void flush_ldt(void *current_mm)
{
@@ -232,16 +230,10 @@ static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode)
}
}
- /*
- * On x86-64 we do not support 16-bit segments due to
- * IRET leaking the high bits of the kernel stack address.
- */
-#ifdef CONFIG_X86_64
- if (!ldt_info.seg_32bit && !sysctl_ldt16) {
+ if (!IS_ENABLED(CONFIG_X86_16BIT) && !ldt_info.seg_32bit) {
error = -EINVAL;
goto out_unlock;
}
-#endif
fill_ldt(&ldt, &ldt_info);
if (oldmode)
diff --git a/arch/x86/kernel/paravirt_patch_64.c b/arch/x86/kernel/paravirt_patch_64.c
index 3f08f34..a1da673 100644
--- a/arch/x86/kernel/paravirt_patch_64.c
+++ b/arch/x86/kernel/paravirt_patch_64.c
@@ -6,7 +6,6 @@ DEF_NATIVE(pv_irq_ops, irq_disable, "cli");
DEF_NATIVE(pv_irq_ops, irq_enable, "sti");
DEF_NATIVE(pv_irq_ops, restore_fl, "pushq %rdi; popfq");
DEF_NATIVE(pv_irq_ops, save_fl, "pushfq; popq %rax");
-DEF_NATIVE(pv_cpu_ops, iret, "iretq");
DEF_NATIVE(pv_mmu_ops, read_cr2, "movq %cr2, %rax");
DEF_NATIVE(pv_mmu_ops, read_cr3, "movq %cr3, %rax");
DEF_NATIVE(pv_mmu_ops, write_cr3, "movq %rdi, %cr3");
@@ -50,7 +49,6 @@ unsigned native_patch(u8 type, u16 clobbers, void *ibuf,
PATCH_SITE(pv_irq_ops, save_fl);
PATCH_SITE(pv_irq_ops, irq_enable);
PATCH_SITE(pv_irq_ops, irq_disable);
- PATCH_SITE(pv_cpu_ops, iret);
PATCH_SITE(pv_cpu_ops, irq_enable_sysexit);
PATCH_SITE(pv_cpu_ops, usergs_sysret32);
PATCH_SITE(pv_cpu_ops, usergs_sysret64);
diff --git a/arch/x86/kernel/resource.c b/arch/x86/kernel/resource.c
index 2a26819..80eab01 100644
--- a/arch/x86/kernel/resource.c
+++ b/arch/x86/kernel/resource.c
@@ -37,10 +37,12 @@ static void remove_e820_regions(struct resource *avail)
void arch_remove_reservations(struct resource *avail)
{
- /* Trim out BIOS areas (low 1MB and high 2MB) and E820 regions */
+ /*
+ * Trim out BIOS area (high 2MB) and E820 regions. We do not remove
+ * the low 1MB unconditionally, as this area is needed for some ISA
+ * cards requiring a memory range, e.g. the i82365 PCMCIA controller.
+ */
if (avail->flags & IORESOURCE_MEM) {
- if (avail->start < BIOS_END)
- avail->start = BIOS_END;
resource_clip(avail, BIOS_ROM_BASE, BIOS_ROM_END);
remove_e820_regions(avail);
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index b88eadb..6e68bd9 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -266,6 +266,13 @@ notrace static void __cpuinit start_secondary(void *unused)
check_tsc_sync_target();
/*
+ * Enable the espfix hack for this CPU
+ */
+#ifdef CONFIG_X86_ESPFIX64
+ init_espfix_ap();
+#endif
+
+ /*
* We need to hold call_lock, so there is no inconsistency
* between the time smp_call_function() determines number of
* IPI recipients, and the time when the determination is made
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index f5302da..638cab5 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -1818,6 +1818,7 @@ static int em_ret_far(struct x86_emulate_ctxt *ctxt)
{
int rc;
unsigned long cs;
+ int cpl = ctxt->ops->cpl(ctxt);
rc = emulate_pop(ctxt, &ctxt->_eip, ctxt->op_bytes);
if (rc != X86EMUL_CONTINUE)
@@ -1827,6 +1828,9 @@ static int em_ret_far(struct x86_emulate_ctxt *ctxt)
rc = emulate_pop(ctxt, &cs, ctxt->op_bytes);
if (rc != X86EMUL_CONTINUE)
return rc;
+ /* Outer-privilege level return is not implemented */
+ if (ctxt->mode >= X86EMUL_MODE_PROT16 && (cs & 3) > cpl)
+ return X86EMUL_UNHANDLEABLE;
rc = load_segment_descriptor(ctxt, (u16)cs, VCPU_SREG_CS);
return rc;
}
diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
index 0002a3a..e04e677 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch/x86/mm/dump_pagetables.c
@@ -30,11 +30,13 @@ struct pg_state {
unsigned long start_address;
unsigned long current_address;
const struct addr_marker *marker;
+ unsigned long lines;
};
struct addr_marker {
unsigned long start_address;
const char *name;
+ unsigned long max_lines;
};
/* indices for address_markers; keep sync'd w/ address_markers below */
@@ -45,6 +47,7 @@ enum address_markers_idx {
LOW_KERNEL_NR,
VMALLOC_START_NR,
VMEMMAP_START_NR,
+ ESPFIX_START_NR,
HIGH_KERNEL_NR,
MODULES_VADDR_NR,
MODULES_END_NR,
@@ -67,6 +70,7 @@ static struct addr_marker address_markers[] = {
{ PAGE_OFFSET, "Low Kernel Mapping" },
{ VMALLOC_START, "vmalloc() Area" },
{ VMEMMAP_START, "Vmemmap" },
+ { ESPFIX_BASE_ADDR, "ESPfix Area", 16 },
{ __START_KERNEL_map, "High Kernel Mapping" },
{ MODULES_VADDR, "Modules" },
{ MODULES_END, "End Modules" },
@@ -163,7 +167,7 @@ static void note_page(struct seq_file *m, struct pg_state *st,
pgprot_t new_prot, int level)
{
pgprotval_t prot, cur;
- static const char units[] = "KMGTPE";
+ static const char units[] = "BKMGTPE";
/*
* If we have a "break" in the series, we need to flush the state that
@@ -178,6 +182,7 @@ static void note_page(struct seq_file *m, struct pg_state *st,
st->current_prot = new_prot;
st->level = level;
st->marker = address_markers;
+ st->lines = 0;
seq_printf(m, "---[ %s ]---\n", st->marker->name);
} else if (prot != cur || level != st->level ||
st->current_address >= st->marker[1].start_address) {
@@ -188,17 +193,21 @@ static void note_page(struct seq_file *m, struct pg_state *st,
/*
* Now print the actual finished series
*/
- seq_printf(m, "0x%0*lx-0x%0*lx ",
- width, st->start_address,
- width, st->current_address);
-
- delta = (st->current_address - st->start_address) >> 10;
- while (!(delta & 1023) && unit[1]) {
- delta >>= 10;
- unit++;
+ if (!st->marker->max_lines ||
+ st->lines < st->marker->max_lines) {
+ seq_printf(m, "0x%0*lx-0x%0*lx ",
+ width, st->start_address,
+ width, st->current_address);
+
+ delta = (st->current_address - st->start_address);
+ while (!(delta & 1023) && unit[1]) {
+ delta >>= 10;
+ unit++;
+ }
+ seq_printf(m, "%9lu%c ", delta, *unit);
+ printk_prot(m, st->current_prot, st->level);
}
- seq_printf(m, "%9lu%c ", delta, *unit);
- printk_prot(m, st->current_prot, st->level);
+ st->lines++;
/*
* We print markers for special areas of address space,
@@ -206,7 +215,15 @@ static void note_page(struct seq_file *m, struct pg_state *st,
* This helps in the interpretation.
*/
if (st->current_address >= st->marker[1].start_address) {
+ if (st->marker->max_lines &&
+ st->lines > st->marker->max_lines) {
+ unsigned long nskip =
+ st->lines - st->marker->max_lines;
+ seq_printf(m, "... %lu entr%s skipped ... \n",
+ nskip, nskip == 1 ? "y" : "ies");
+ }
st->marker++;
+ st->lines = 0;
seq_printf(m, "---[ %s ]---\n", st->marker->name);
}
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index 794b092..2d3c854 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -73,6 +73,10 @@ pcibios_align_resource(void *data, const struct resource *res,
return start;
if (start & 0x300)
start = (start + 0x3ff) & ~0x3ff;
+ } else if (res->flags & IORESOURCE_MEM) {
+ /* The low 1MB range is reserved for ISA cards */
+ if (start < BIOS_END)
+ start = BIOS_END;
}
return start;
}
diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c
index 51bdc05..468d591 100644
--- a/arch/x86/vdso/vdso32-setup.c
+++ b/arch/x86/vdso/vdso32-setup.c
@@ -41,7 +41,6 @@ enum {
#ifdef CONFIG_X86_64
#define vdso_enabled sysctl_vsyscall32
#define arch_setup_additional_pages syscall32_setup_pages
-extern int sysctl_ldt16;
#endif
/*
@@ -389,13 +388,6 @@ static ctl_table abi_table2[] = {
.mode = 0644,
.proc_handler = proc_dointvec
},
- {
- .procname = "ldt16",
- .data = &sysctl_ldt16,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec
- },
{}
};
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index d50a821..1a82319 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -397,7 +397,7 @@ void xen_setup_timer(int cpu)
irq = bind_virq_to_irqhandler(VIRQ_TIMER, cpu, xen_timer_interrupt,
IRQF_DISABLED|IRQF_PERCPU|
IRQF_NOBALANCING|IRQF_TIMER|
- IRQF_FORCE_RESUME,
+ IRQF_FORCE_RESUME|IRQF_EARLY_RESUME,
name, NULL);
evt = &per_cpu(xen_clock_events, cpu);
diff --git a/block/blk-tag.c b/block/blk-tag.c
index 4af6f5c..f606487 100644
--- a/block/blk-tag.c
+++ b/block/blk-tag.c
@@ -27,18 +27,15 @@ struct request *blk_queue_find_tag(struct request_queue *q, int tag)
EXPORT_SYMBOL(blk_queue_find_tag);
/**
- * __blk_free_tags - release a given set of tag maintenance info
+ * blk_free_tags - release a given set of tag maintenance info
* @bqt: the tag map to free
*
- * Tries to free the specified @bqt. Returns true if it was
- * actually freed and false if there are still references using it
+ * Drop the reference count on @bqt and frees it when the last reference
+ * is dropped.
*/
-static int __blk_free_tags(struct blk_queue_tag *bqt)
+void blk_free_tags(struct blk_queue_tag *bqt)
{
- int retval;
-
- retval = atomic_dec_and_test(&bqt->refcnt);
- if (retval) {
+ if (atomic_dec_and_test(&bqt->refcnt)) {
BUG_ON(find_first_bit(bqt->tag_map, bqt->max_depth) <
bqt->max_depth);
@@ -50,9 +47,8 @@ static int __blk_free_tags(struct blk_queue_tag *bqt)
kfree(bqt);
}
-
- return retval;
}
+EXPORT_SYMBOL(blk_free_tags);
/**
* __blk_queue_free_tags - release tag maintenance info
@@ -69,28 +65,13 @@ void __blk_queue_free_tags(struct request_queue *q)
if (!bqt)
return;
- __blk_free_tags(bqt);
+ blk_free_tags(bqt);
q->queue_tags = NULL;
queue_flag_clear_unlocked(QUEUE_FLAG_QUEUED, q);
}
/**
- * blk_free_tags - release a given set of tag maintenance info
- * @bqt: the tag map to free
- *
- * For externally managed @bqt frees the map. Callers of this
- * function must guarantee to have released all the queues that
- * might have been using this tag map.
- */
-void blk_free_tags(struct blk_queue_tag *bqt)
-{
- if (unlikely(!__blk_free_tags(bqt)))
- BUG();
-}
-EXPORT_SYMBOL(blk_free_tags);
-
-/**
* blk_queue_free_tags - release tag maintenance info
* @q: the request queue for the device
*
diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index ac33d5f..bf948e1 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -21,6 +21,7 @@
#include <linux/module.h>
#include <linux/net.h>
#include <linux/rwsem.h>
+#include <linux/security.h>
struct alg_type_list {
const struct af_alg_type *type;
@@ -243,6 +244,7 @@ int af_alg_accept(struct sock *sk, struct socket *newsock)
sock_init_data(newsock, sk2);
sock_graft(sk2, newsock);
+ security_sk_clone(sk, sk2);
err = type->accept(ask->private, sk2);
if (err) {
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 48fd158..05df096 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -193,6 +193,8 @@ static bool advance_transaction(struct acpi_ec *ec)
t->rdata[t->ri++] = acpi_ec_read_data(ec);
if (t->rlen == t->ri) {
t->flags |= ACPI_EC_COMMAND_COMPLETE;
+ if (t->command == ACPI_EC_COMMAND_QUERY)
+ pr_debug("hardware QR_EC completion\n");
wakeup = true;
}
} else
@@ -204,7 +206,20 @@ static bool advance_transaction(struct acpi_ec *ec)
}
return wakeup;
} else {
- if ((status & ACPI_EC_FLAG_IBF) == 0) {
+ /*
+ * There is firmware refusing to respond QR_EC when SCI_EVT
+ * is not set, for which case, we complete the QR_EC
+ * without issuing it to the firmware.
+ * https://bugzilla.kernel.org/show_bug.cgi?id=86211
+ */
+ if (!(status & ACPI_EC_FLAG_SCI) &&
+ (t->command == ACPI_EC_COMMAND_QUERY)) {
+ t->flags |= ACPI_EC_COMMAND_POLL;
+ t->rdata[t->ri++] = 0x00;
+ t->flags |= ACPI_EC_COMMAND_COMPLETE;
+ pr_debug("software QR_EC completion\n");
+ wakeup = true;
+ } else if ((status & ACPI_EC_FLAG_IBF) == 0) {
acpi_ec_write_cmd(ec, t->command);
t->flags |= ACPI_EC_COMMAND_POLL;
} else
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 44a4434..43b0acf 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -463,6 +463,7 @@ static const struct pci_device_id ahci_pci_tbl[] = {
/* Promise */
{ PCI_VDEVICE(PROMISE, 0x3f20), board_ahci }, /* PDC42819 */
+ { PCI_VDEVICE(PROMISE, 0x3781), board_ahci }, /* FastTrak TX8660 ahci-mode */
/* Asmedia */
{ PCI_VDEVICE(ASMEDIA, 0x0601), board_ahci }, /* ASM1060 */
diff --git a/drivers/ata/pata_scc.c b/drivers/ata/pata_scc.c
index e265f83..19759d3 100644
--- a/drivers/ata/pata_scc.c
+++ b/drivers/ata/pata_scc.c
@@ -586,7 +586,7 @@ static int scc_wait_after_reset(struct ata_link *link, unsigned int devmask,
* Note: Original code is ata_bus_softreset().
*/
-static unsigned int scc_bus_softreset(struct ata_port *ap, unsigned int devmask,
+static int scc_bus_softreset(struct ata_port *ap, unsigned int devmask,
unsigned long deadline)
{
struct ata_ioports *ioaddr = &ap->ioaddr;
@@ -600,9 +600,7 @@ static unsigned int scc_bus_softreset(struct ata_port *ap, unsigned int devmask,
udelay(20);
out_be32(ioaddr->ctl_addr, ap->ctl);
- scc_wait_after_reset(&ap->link, devmask, deadline);
-
- return 0;
+ return scc_wait_after_reset(&ap->link, devmask, deadline);
}
/**
@@ -619,7 +617,8 @@ static int scc_softreset(struct ata_link *link, unsigned int *classes,
{
struct ata_port *ap = link->ap;
unsigned int slave_possible = ap->flags & ATA_FLAG_SLAVE_POSS;
- unsigned int devmask = 0, err_mask;
+ unsigned int devmask = 0;
+ int rc;
u8 err;
DPRINTK("ENTER\n");
@@ -635,9 +634,9 @@ static int scc_softreset(struct ata_link *link, unsigned int *classes,
/* issue bus reset */
DPRINTK("about to softreset, devmask=%x\n", devmask);
- err_mask = scc_bus_softreset(ap, devmask, deadline);
- if (err_mask) {
- ata_port_err(ap, "SRST failed (err_mask=0x%x)\n", err_mask);
+ rc = scc_bus_softreset(ap, devmask, deadline);
+ if (rc) {
+ ata_port_err(ap, "SRST failed (err_mask=0x%x)\n", rc);
return -EIO;
}
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index 0d91655..c234b9e 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -533,11 +533,10 @@ EXPORT_SYMBOL_GPL(tpm_gen_interrupt);
void tpm_get_timeouts(struct tpm_chip *chip)
{
struct tpm_cmd_t tpm_cmd;
- struct timeout_t *timeout_cap;
+ unsigned long new_timeout[4];
+ unsigned long old_timeout[4];
struct duration_t *duration_cap;
ssize_t rc;
- u32 timeout;
- unsigned int scale = 1;
tpm_cmd.header.in = tpm_getcap_header;
tpm_cmd.params.getcap_in.cap = TPM_CAP_PROP;
@@ -554,25 +553,46 @@ void tpm_get_timeouts(struct tpm_chip *chip)
!= sizeof(tpm_cmd.header.out) + sizeof(u32) + 4 * sizeof(u32))
return;
- timeout_cap = &tpm_cmd.params.getcap_out.cap.timeout;
- /* Don't overwrite default if value is 0 */
- timeout = be32_to_cpu(timeout_cap->a);
- if (timeout && timeout < 1000) {
- /* timeouts in msec rather usec */
- scale = 1000;
- chip->vendor.timeout_adjusted = true;
+ old_timeout[0] = be32_to_cpu(tpm_cmd.params.getcap_out.cap.timeout.a);
+ old_timeout[1] = be32_to_cpu(tpm_cmd.params.getcap_out.cap.timeout.b);
+ old_timeout[2] = be32_to_cpu(tpm_cmd.params.getcap_out.cap.timeout.c);
+ old_timeout[3] = be32_to_cpu(tpm_cmd.params.getcap_out.cap.timeout.d);
+ memcpy(new_timeout, old_timeout, sizeof(new_timeout));
+
+ /*
+ * Provide ability for vendor overrides of timeout values in case
+ * of misreporting.
+ */
+ if (chip->vendor.update_timeouts != NULL)
+ chip->vendor.timeout_adjusted =
+ chip->vendor.update_timeouts(chip, new_timeout);
+
+ if (!chip->vendor.timeout_adjusted) {
+ /* Don't overwrite default if value is 0 */
+ if (new_timeout[0] != 0 && new_timeout[0] < 1000) {
+ int i;
+
+ /* timeouts in msec rather usec */
+ for (i = 0; i != ARRAY_SIZE(new_timeout); i++)
+ new_timeout[i] *= 1000;
+ chip->vendor.timeout_adjusted = true;
+ }
}
- if (timeout)
- chip->vendor.timeout_a = usecs_to_jiffies(timeout * scale);
- timeout = be32_to_cpu(timeout_cap->b);
- if (timeout)
- chip->vendor.timeout_b = usecs_to_jiffies(timeout * scale);
- timeout = be32_to_cpu(timeout_cap->c);
- if (timeout)
- chip->vendor.timeout_c = usecs_to_jiffies(timeout * scale);
- timeout = be32_to_cpu(timeout_cap->d);
- if (timeout)
- chip->vendor.timeout_d = usecs_to_jiffies(timeout * scale);
+
+ /* Report adjusted timeouts */
+ if (chip->vendor.timeout_adjusted) {
+ dev_info(chip->dev,
+ HW_ERR "Adjusting reported timeouts: A %lu->%luus B %lu->%luus C %lu->%luus D %lu->%luus\n",
+ old_timeout[0], new_timeout[0],
+ old_timeout[1], new_timeout[1],
+ old_timeout[2], new_timeout[2],
+ old_timeout[3], new_timeout[3]);
+ }
+
+ chip->vendor.timeout_a = usecs_to_jiffies(new_timeout[0]);
+ chip->vendor.timeout_b = usecs_to_jiffies(new_timeout[1]);
+ chip->vendor.timeout_c = usecs_to_jiffies(new_timeout[2]);
+ chip->vendor.timeout_d = usecs_to_jiffies(new_timeout[3]);
duration:
tpm_cmd.header.in = tpm_getcap_header;
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 9c4163c..befbe67 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -80,6 +80,9 @@ struct tpm_vendor_specific {
int (*send) (struct tpm_chip *, u8 *, size_t);
void (*cancel) (struct tpm_chip *);
u8 (*status) (struct tpm_chip *);
+ bool (*update_timeouts)(struct tpm_chip *chip,
+ unsigned long *timeout_cap);
+
void (*release) (struct device *);
struct miscdevice miscdev;
struct attribute_group *attr_group;
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index c7e5282..f8e94fe 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -396,6 +396,36 @@ out_err:
return rc;
}
+struct tis_vendor_timeout_override {
+ u32 did_vid;
+ unsigned long timeout_us[4];
+};
+
+static const struct tis_vendor_timeout_override vendor_timeout_overrides[] = {
+ /* Atmel 3204 */
+ { 0x32041114, { (TIS_SHORT_TIMEOUT*1000), (TIS_LONG_TIMEOUT*1000),
+ (TIS_SHORT_TIMEOUT*1000), (TIS_SHORT_TIMEOUT*1000) } },
+};
+
+static bool tpm_tis_update_timeouts(struct tpm_chip *chip,
+ unsigned long *timeout_cap)
+{
+ int i;
+ u32 did_vid;
+
+ did_vid = ioread32(chip->vendor.iobase + TPM_DID_VID(0));
+
+ for (i = 0; i != ARRAY_SIZE(vendor_timeout_overrides); i++) {
+ if (vendor_timeout_overrides[i].did_vid != did_vid)
+ continue;
+ memcpy(timeout_cap, vendor_timeout_overrides[i].timeout_us,
+ sizeof(vendor_timeout_overrides[i].timeout_us));
+ return true;
+ }
+
+ return false;
+}
+
/*
* Early probing for iTPM with STS_DATA_EXPECT flaw.
* Try sending command without itpm flag set and if that
@@ -483,6 +513,7 @@ static struct tpm_vendor_specific tpm_tis = {
.recv = tpm_tis_recv,
.send = tpm_tis_send,
.cancel = tpm_tis_ready,
+ .update_timeouts = tpm_tis_update_timeouts,
.req_complete_mask = TPM_STS_DATA_AVAIL | TPM_STS_VALID,
.req_complete_val = TPM_STS_DATA_AVAIL | TPM_STS_VALID,
.req_canceled = TPM_STS_COMMAND_READY,
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 5efba47..9b3f787 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -2765,6 +2765,7 @@ static u32 evergreen_get_ih_wptr(struct radeon_device *rdev)
tmp = RREG32(IH_RB_CNTL);
tmp |= IH_WPTR_OVERFLOW_CLEAR;
WREG32(IH_RB_CNTL, tmp);
+ wptr &= ~RB_OVERFLOW;
}
return (wptr & rdev->ih.ptr_mask);
}
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index f7e3cc0..ab46a99 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -3280,6 +3280,7 @@ static u32 r600_get_ih_wptr(struct radeon_device *rdev)
tmp = RREG32(IH_RB_CNTL);
tmp |= IH_WPTR_OVERFLOW_CLEAR;
WREG32(IH_RB_CNTL, tmp);
+ wptr &= ~RB_OVERFLOW;
}
return (wptr & rdev->ih.ptr_mask);
}
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index e4e455e..6d9c32b 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1873,7 +1873,7 @@ static const char *thermal_controller_names[] = {
"adm1032",
"adm1030",
"max6649",
- "lm64",
+ "lm63", /* lm64 */
"f75375",
"asc7xxx",
};
@@ -1884,7 +1884,7 @@ static const char *pp_lib_thermal_controller_names[] = {
"adm1032",
"adm1030",
"max6649",
- "lm64",
+ "lm63", /* lm64 */
"f75375",
"RV6xx",
"RV770",
diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c
index 9e4313e..508c64c 100644
--- a/drivers/gpu/drm/ttm/ttm_page_alloc.c
+++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c
@@ -398,13 +398,18 @@ static int ttm_pool_get_num_unused_pages(void)
static int ttm_pool_mm_shrink(struct shrinker *shrink,
struct shrink_control *sc)
{
- static atomic_t start_pool = ATOMIC_INIT(0);
+ static DEFINE_MUTEX(lock);
+ static unsigned start_pool;
unsigned i;
- unsigned pool_offset = atomic_add_return(1, &start_pool);
+ unsigned pool_offset;
struct ttm_page_pool *pool;
int shrink_pages = sc->nr_to_scan;
- pool_offset = pool_offset % NUM_POOLS;
+ if (shrink_pages == 0)
+ goto out;
+ if (!mutex_trylock(&lock))
+ return -1;
+ pool_offset = ++start_pool % NUM_POOLS;
/* select start pool in round robin fashion */
for (i = 0; i < NUM_POOLS; ++i) {
unsigned nr_free = shrink_pages;
@@ -413,6 +418,8 @@ static int ttm_pool_mm_shrink(struct shrinker *shrink,
pool = &_manager->pools[(i + pool_offset)%NUM_POOLS];
shrink_pages = ttm_page_pool_free(pool, nr_free);
}
+ mutex_unlock(&lock);
+out:
/* return estimated number of unused pages in pool */
return ttm_pool_get_num_unused_pages();
}
diff --git a/drivers/hid/hid-cherry.c b/drivers/hid/hid-cherry.c
index 888ece6..f870bb3 100644
--- a/drivers/hid/hid-cherry.c
+++ b/drivers/hid/hid-cherry.c
@@ -29,7 +29,7 @@
static __u8 *ch_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
- if (*rsize >= 17 && rdesc[11] == 0x3c && rdesc[12] == 0x02) {
+ if (*rsize >= 18 && rdesc[11] == 0x3c && rdesc[12] == 0x02) {
hid_info(hdev, "fixing up Cherry Cymotion report descriptor\n");
rdesc[11] = rdesc[16] = 0xff;
rdesc[12] = rdesc[17] = 0x03;
diff --git a/drivers/hid/hid-kye.c b/drivers/hid/hid-kye.c
index f2ba9ef..25dfb5f 100644
--- a/drivers/hid/hid-kye.c
+++ b/drivers/hid/hid-kye.c
@@ -26,7 +26,7 @@
static __u8 *kye_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
- if (*rsize >= 74 &&
+ if (*rsize >= 75 &&
rdesc[61] == 0x05 && rdesc[62] == 0x08 &&
rdesc[63] == 0x19 && rdesc[64] == 0x08 &&
rdesc[65] == 0x29 && rdesc[66] == 0x0f &&
diff --git a/drivers/hid/hid-lg.c b/drivers/hid/hid-lg.c
index e7a7bd1..3ad6cd4 100644
--- a/drivers/hid/hid-lg.c
+++ b/drivers/hid/hid-lg.c
@@ -111,14 +111,14 @@ static __u8 *lg_report_fixup(struct hid_device *hdev, __u8 *rdesc,
{
unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
- if ((quirks & LG_RDESC) && *rsize >= 90 && rdesc[83] == 0x26 &&
+ if ((quirks & LG_RDESC) && *rsize >= 91 && rdesc[83] == 0x26 &&
rdesc[84] == 0x8c && rdesc[85] == 0x02) {
hid_info(hdev,
"fixing up Logitech keyboard report descriptor\n");
rdesc[84] = rdesc[89] = 0x4d;
rdesc[85] = rdesc[90] = 0x10;
}
- if ((quirks & LG_RDESC_REL_ABS) && *rsize >= 50 &&
+ if ((quirks & LG_RDESC_REL_ABS) && *rsize >= 51 &&
rdesc[32] == 0x81 && rdesc[33] == 0x06 &&
rdesc[49] == 0x81 && rdesc[50] == 0x06) {
hid_info(hdev,
diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c
index 828a0dd..488a21a 100644
--- a/drivers/hid/hid-logitech-dj.c
+++ b/drivers/hid/hid-logitech-dj.c
@@ -230,13 +230,6 @@ static void logi_dj_recv_add_djhid_device(struct dj_receiver_dev *djrcv_dev,
return;
}
- if ((dj_report->device_index < DJ_DEVICE_INDEX_MIN) ||
- (dj_report->device_index > DJ_DEVICE_INDEX_MAX)) {
- dev_err(&djrcv_hdev->dev, "%s: invalid device index:%d\n",
- __func__, dj_report->device_index);
- return;
- }
-
if (djrcv_dev->paired_dj_devices[dj_report->device_index]) {
/* The device is already known. No need to reallocate it. */
dbg_hid("%s: device is already known\n", __func__);
@@ -686,7 +679,6 @@ static int logi_dj_raw_event(struct hid_device *hdev,
struct dj_receiver_dev *djrcv_dev = hid_get_drvdata(hdev);
struct dj_report *dj_report = (struct dj_report *) data;
unsigned long flags;
- bool report_processed = false;
dbg_hid("%s, size:%d\n", __func__, size);
@@ -714,27 +706,41 @@ static int logi_dj_raw_event(struct hid_device *hdev,
* anything else with it.
*/
+ /* case 1) */
+ if (data[0] != REPORT_ID_DJ_SHORT)
+ return false;
+
+ if ((dj_report->device_index < DJ_DEVICE_INDEX_MIN) ||
+ (dj_report->device_index > DJ_DEVICE_INDEX_MAX)) {
+ /*
+ * Device index is wrong, bail out.
+ * This driver can ignore safely the receiver notifications,
+ * so ignore those reports too.
+ */
+ if (dj_report->device_index != DJ_RECEIVER_INDEX)
+ dev_err(&hdev->dev, "%s: invalid device index:%d\n",
+ __func__, dj_report->device_index);
+ return false;
+ }
+
spin_lock_irqsave(&djrcv_dev->lock, flags);
- if (dj_report->report_id == REPORT_ID_DJ_SHORT) {
- switch (dj_report->report_type) {
- case REPORT_TYPE_NOTIF_DEVICE_PAIRED:
- case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED:
- logi_dj_recv_queue_notification(djrcv_dev, dj_report);
- break;
- case REPORT_TYPE_NOTIF_CONNECTION_STATUS:
- if (dj_report->report_params[CONNECTION_STATUS_PARAM_STATUS] ==
- STATUS_LINKLOSS) {
- logi_dj_recv_forward_null_report(djrcv_dev, dj_report);
- }
- break;
- default:
- logi_dj_recv_forward_report(djrcv_dev, dj_report);
+ switch (dj_report->report_type) {
+ case REPORT_TYPE_NOTIF_DEVICE_PAIRED:
+ case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED:
+ logi_dj_recv_queue_notification(djrcv_dev, dj_report);
+ break;
+ case REPORT_TYPE_NOTIF_CONNECTION_STATUS:
+ if (dj_report->report_params[CONNECTION_STATUS_PARAM_STATUS] ==
+ STATUS_LINKLOSS) {
+ logi_dj_recv_forward_null_report(djrcv_dev, dj_report);
}
- report_processed = true;
+ break;
+ default:
+ logi_dj_recv_forward_report(djrcv_dev, dj_report);
}
spin_unlock_irqrestore(&djrcv_dev->lock, flags);
- return report_processed;
+ return true;
}
static int logi_dj_probe(struct hid_device *hdev,
diff --git a/drivers/hid/hid-logitech-dj.h b/drivers/hid/hid-logitech-dj.h
index 4a40003..daeb0aa 100644
--- a/drivers/hid/hid-logitech-dj.h
+++ b/drivers/hid/hid-logitech-dj.h
@@ -27,6 +27,7 @@
#define DJ_MAX_PAIRED_DEVICES 6
#define DJ_MAX_NUMBER_NOTIFICATIONS 8
+#define DJ_RECEIVER_INDEX 0
#define DJ_DEVICE_INDEX_MIN 1
#define DJ_DEVICE_INDEX_MAX 6
diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c
index 7cf3ffe..81356f6 100644
--- a/drivers/hid/hid-magicmouse.c
+++ b/drivers/hid/hid-magicmouse.c
@@ -308,6 +308,11 @@ static int magicmouse_raw_event(struct hid_device *hdev,
if (size < 4 || ((size - 4) % 9) != 0)
return 0;
npoints = (size - 4) / 9;
+ if (npoints > 15) {
+ hid_warn(hdev, "invalid size value (%d) for TRACKPAD_REPORT_ID\n",
+ size);
+ return 0;
+ }
msc->ntouches = 0;
for (ii = 0; ii < npoints; ii++)
magicmouse_emit_touch(msc, ii, data + ii * 9 + 4);
@@ -331,6 +336,11 @@ static int magicmouse_raw_event(struct hid_device *hdev,
if (size < 6 || ((size - 6) % 8) != 0)
return 0;
npoints = (size - 6) / 8;
+ if (npoints > 15) {
+ hid_warn(hdev, "invalid size value (%d) for MOUSE_REPORT_ID\n",
+ size);
+ return 0;
+ }
msc->ntouches = 0;
for (ii = 0; ii < npoints; ii++)
magicmouse_emit_touch(msc, ii, data + ii * 8 + 6);
diff --git a/drivers/hid/hid-monterey.c b/drivers/hid/hid-monterey.c
index dedf757..eb0271e 100644
--- a/drivers/hid/hid-monterey.c
+++ b/drivers/hid/hid-monterey.c
@@ -25,7 +25,7 @@
static __u8 *mr_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
- if (*rsize >= 30 && rdesc[29] == 0x05 && rdesc[30] == 0x09) {
+ if (*rsize >= 31 && rdesc[29] == 0x05 && rdesc[30] == 0x09) {
hid_info(hdev, "fixing up button/consumer in HID report descriptor\n");
rdesc[30] = 0x0c;
}
diff --git a/drivers/hid/hid-petalynx.c b/drivers/hid/hid-petalynx.c
index f1ea3ff..99f317a 100644
--- a/drivers/hid/hid-petalynx.c
+++ b/drivers/hid/hid-petalynx.c
@@ -26,7 +26,7 @@
static __u8 *pl_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
- if (*rsize >= 60 && rdesc[39] == 0x2a && rdesc[40] == 0xf5 &&
+ if (*rsize >= 62 && rdesc[39] == 0x2a && rdesc[40] == 0xf5 &&
rdesc[41] == 0x00 && rdesc[59] == 0x26 &&
rdesc[60] == 0xf9 && rdesc[61] == 0x00) {
hid_info(hdev, "fixing up Petalynx Maxter Remote report descriptor\n");
diff --git a/drivers/hid/hid-picolcd.c b/drivers/hid/hid-picolcd.c
index 1daeaca..c952131 100644
--- a/drivers/hid/hid-picolcd.c
+++ b/drivers/hid/hid-picolcd.c
@@ -2382,6 +2382,12 @@ static int picolcd_raw_event(struct hid_device *hdev,
if (!data)
return 1;
+ if (size > 64) {
+ hid_warn(hdev, "invalid size value (%d) for picolcd raw event\n",
+ size);
+ return 0;
+ }
+
if (report->id == REPORT_KEY_STATE) {
if (data->input_keys)
ret = picolcd_raw_keypad(data, report, raw_data+1, size-1);
diff --git a/drivers/hid/hid-sunplus.c b/drivers/hid/hid-sunplus.c
index d484a00..3d6ae7b 100644
--- a/drivers/hid/hid-sunplus.c
+++ b/drivers/hid/hid-sunplus.c
@@ -25,7 +25,7 @@
static __u8 *sp_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
- if (*rsize >= 107 && rdesc[104] == 0x26 && rdesc[105] == 0x80 &&
+ if (*rsize >= 112 && rdesc[104] == 0x26 && rdesc[105] == 0x80 &&
rdesc[106] == 0x03) {
hid_info(hdev, "fixing up Sunplus Wireless Desktop report descriptor\n");
rdesc[105] = rdesc[110] = 0x03;
diff --git a/drivers/hwmon/ads1015.c b/drivers/hwmon/ads1015.c
index dd87ae9..2f14cad 100644
--- a/drivers/hwmon/ads1015.c
+++ b/drivers/hwmon/ads1015.c
@@ -186,7 +186,7 @@ static int ads1015_get_channels_config_of(struct i2c_client *client)
}
channel = be32_to_cpup(property);
- if (channel > ADS1015_CHANNELS) {
+ if (channel >= ADS1015_CHANNELS) {
dev_err(&client->dev,
"invalid channel index %d on %s\n",
channel, node->full_name);
@@ -200,6 +200,7 @@ static int ads1015_get_channels_config_of(struct i2c_client *client)
dev_err(&client->dev,
"invalid gain on %s\n",
node->full_name);
+ return -EINVAL;
}
}
@@ -210,6 +211,7 @@ static int ads1015_get_channels_config_of(struct i2c_client *client)
dev_err(&client->dev,
"invalid data_rate on %s\n",
node->full_name);
+ return -EINVAL;
}
}
diff --git a/drivers/hwmon/amc6821.c b/drivers/hwmon/amc6821.c
index 75be6c4..b7f3356 100644
--- a/drivers/hwmon/amc6821.c
+++ b/drivers/hwmon/amc6821.c
@@ -360,11 +360,13 @@ static ssize_t set_pwm1_enable(
if (config)
return config;
+ mutex_lock(&data->update_lock);
config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF1);
if (config < 0) {
dev_err(&client->dev,
"Error reading configuration register, aborting.\n");
- return -EIO;
+ count = config;
+ goto unlock;
}
switch (val) {
@@ -381,14 +383,15 @@ static ssize_t set_pwm1_enable(
config |= AMC6821_CONF1_FDRC1;
break;
default:
- return -EINVAL;
+ count = -EINVAL;
+ goto unlock;
}
- mutex_lock(&data->update_lock);
if (i2c_smbus_write_byte_data(client, AMC6821_REG_CONF1, config)) {
dev_err(&client->dev,
"Configuration register write error, aborting.\n");
count = -EIO;
}
+unlock:
mutex_unlock(&data->update_lock);
return count;
}
@@ -495,8 +498,9 @@ static ssize_t set_temp_auto_point_temp(
return -EINVAL;
}
- data->valid = 0;
mutex_lock(&data->update_lock);
+ data->valid = 0;
+
switch (ix) {
case 0:
ptemp[0] = SENSORS_LIMIT(val / 1000, 0,
@@ -669,13 +673,14 @@ static ssize_t set_fan1_div(
if (config)
return config;
+ mutex_lock(&data->update_lock);
config = i2c_smbus_read_byte_data(client, AMC6821_REG_CONF4);
if (config < 0) {
dev_err(&client->dev,
"Error reading configuration register, aborting.\n");
- return -EIO;
+ count = config;
+ goto EXIT;
}
- mutex_lock(&data->update_lock);
switch (val) {
case 2:
config &= ~AMC6821_CONF4_PSPR;
diff --git a/drivers/hwmon/gpio-fan.c b/drivers/hwmon/gpio-fan.c
index 9ba38f3..05c4f47 100644
--- a/drivers/hwmon/gpio-fan.c
+++ b/drivers/hwmon/gpio-fan.c
@@ -195,7 +195,7 @@ static int get_fan_speed_index(struct gpio_fan_data *fan_data)
return -EINVAL;
}
-static int rpm_to_speed_index(struct gpio_fan_data *fan_data, int rpm)
+static int rpm_to_speed_index(struct gpio_fan_data *fan_data, unsigned long rpm)
{
struct gpio_fan_speed *speed = fan_data->speed;
int i;
diff --git a/drivers/hwmon/lm78.c b/drivers/hwmon/lm78.c
index a42a7b0..5ce5d5a 100644
--- a/drivers/hwmon/lm78.c
+++ b/drivers/hwmon/lm78.c
@@ -102,7 +102,7 @@ static inline int FAN_FROM_REG(u8 val, int div)
/* TEMP: mC (-128C to +127C)
REG: 1C/bit, two's complement */
-static inline s8 TEMP_TO_REG(int val)
+static inline s8 TEMP_TO_REG(long val)
{
int nval = SENSORS_LIMIT(val, -128000, 127000) ;
return nval<0 ? (nval-500)/1000 : (nval+500)/1000;
diff --git a/drivers/hwmon/lm85.c b/drivers/hwmon/lm85.c
index da72dc1..97bfba2 100644
--- a/drivers/hwmon/lm85.c
+++ b/drivers/hwmon/lm85.c
@@ -157,7 +157,7 @@ static inline u16 FAN_TO_REG(unsigned long val)
/* Temperature is reported in .001 degC increments */
#define TEMP_TO_REG(val) \
- SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127)
+ DIV_ROUND_CLOSEST(SENSORS_LIMIT((val), -127000, 127000), 1000)
#define TEMPEXT_FROM_REG(val, ext) \
SCALE(((val) << 4) + (ext), 16, 1000)
#define TEMP_FROM_REG(val) ((val) * 1000)
@@ -190,7 +190,7 @@ static const int lm85_range_map[] = {
13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
};
-static int RANGE_TO_REG(int range)
+static int RANGE_TO_REG(long range)
{
int i;
@@ -212,7 +212,7 @@ static const int adm1027_freq_map[8] = { /* 1 Hz */
11, 15, 22, 29, 35, 44, 59, 88
};
-static int FREQ_TO_REG(const int *map, int freq)
+static int FREQ_TO_REG(const int *map, unsigned long freq)
{
int i;
@@ -443,7 +443,13 @@ static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct lm85_data *data = dev_get_drvdata(dev);
- data->vrm = simple_strtoul(buf, NULL, 10);
+ unsigned long val;
+
+ val = simple_strtoul(buf, NULL, 10);
+ if (val > 255)
+ return -EINVAL;
+
+ data->vrm = val;
return count;
}
diff --git a/drivers/hwmon/lm92.c b/drivers/hwmon/lm92.c
index 8fcbd4d4..5d091fa 100644
--- a/drivers/hwmon/lm92.c
+++ b/drivers/hwmon/lm92.c
@@ -73,12 +73,9 @@ static inline int TEMP_FROM_REG(s16 reg)
return reg / 8 * 625 / 10;
}
-static inline s16 TEMP_TO_REG(int val)
+static inline s16 TEMP_TO_REG(long val)
{
- if (val <= -60000)
- return -60000 * 10 / 625 * 8;
- if (val >= 160000)
- return 160000 * 10 / 625 * 8;
+ val = clamp_val(val, -60000, 160000);
return val * 10 / 625 * 8;
}
@@ -192,10 +189,12 @@ static ssize_t set_temp1_crit_hyst(struct device *dev, struct device_attribute *
struct lm92_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
+ val = clamp_val(val, -120000, 220000);
mutex_lock(&data->update_lock);
- data->temp1_hyst = TEMP_FROM_REG(data->temp1_crit) - val;
+ data->temp1_hyst =
+ TEMP_TO_REG(TEMP_FROM_REG(data->temp1_crit) - val);
i2c_smbus_write_word_swapped(client, LM92_REG_TEMP_HYST,
- TEMP_TO_REG(data->temp1_hyst));
+ data->temp1_hyst);
mutex_unlock(&data->update_lock);
return count;
}
diff --git a/drivers/hwmon/sis5595.c b/drivers/hwmon/sis5595.c
index 5ab6953..029a2e1 100644
--- a/drivers/hwmon/sis5595.c
+++ b/drivers/hwmon/sis5595.c
@@ -149,7 +149,7 @@ static inline int TEMP_FROM_REG(s8 val)
{
return val * 830 + 52120;
}
-static inline s8 TEMP_TO_REG(int val)
+static inline s8 TEMP_TO_REG(long val)
{
int nval = SENSORS_LIMIT(val, -54120, 157530) ;
return nval<0 ? (nval-5212-415)/830 : (nval-5212+415)/830;
diff --git a/drivers/hwmon/smsc47m192.c b/drivers/hwmon/smsc47m192.c
index 40b2667..7d1373d 100644
--- a/drivers/hwmon/smsc47m192.c
+++ b/drivers/hwmon/smsc47m192.c
@@ -84,7 +84,7 @@ static inline u8 IN_TO_REG(unsigned long val, int n)
REG: 1C/bit, two's complement */
static inline s8 TEMP_TO_REG(int val)
{
- return SENSORS_LIMIT(SCALE(val, 1, 1000), -128000, 127000);
+ return SCALE(SENSORS_LIMIT(val, -128000, 127000), 1, 1000);
}
static inline int TEMP_FROM_REG(s8 val)
@@ -349,7 +349,13 @@ static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct smsc47m192_data *data = dev_get_drvdata(dev);
- data->vrm = simple_strtoul(buf, NULL, 10);
+ unsigned long val;
+
+ val = simple_strtoul(buf, NULL, 10);
+ if (val > 255)
+ return -EINVAL;
+
+ data->vrm = val;
return count;
}
static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
diff --git a/drivers/infiniband/core/iwcm.c b/drivers/infiniband/core/iwcm.c
index 1a696f7..2882556 100644
--- a/drivers/infiniband/core/iwcm.c
+++ b/drivers/infiniband/core/iwcm.c
@@ -46,6 +46,7 @@
#include <linux/completion.h>
#include <linux/slab.h>
#include <linux/module.h>
+#include <linux/sysctl.h>
#include <rdma/iw_cm.h>
#include <rdma/ib_addr.h>
@@ -65,6 +66,20 @@ struct iwcm_work {
struct list_head free_list;
};
+static unsigned int default_backlog = 256;
+
+static struct ctl_table_header *iwcm_ctl_table_hdr;
+static struct ctl_table iwcm_ctl_table[] = {
+ {
+ .procname = "default_backlog",
+ .data = &default_backlog,
+ .maxlen = sizeof(default_backlog),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ { }
+};
+
/*
* The following services provide a mechanism for pre-allocating iwcm_work
* elements. The design pre-allocates them based on the cm_id type:
@@ -419,6 +434,9 @@ int iw_cm_listen(struct iw_cm_id *cm_id, int backlog)
cm_id_priv = container_of(cm_id, struct iwcm_id_private, id);
+ if (!backlog)
+ backlog = default_backlog;
+
ret = alloc_work_entries(cm_id_priv, backlog);
if (ret)
return ret;
@@ -1014,17 +1032,33 @@ int iw_cm_init_qp_attr(struct iw_cm_id *cm_id,
}
EXPORT_SYMBOL(iw_cm_init_qp_attr);
+static struct ctl_path iwcm_ctl_path[] = {
+ { .procname = "net" },
+ { .procname = "iw_cm" },
+ { }
+};
+
static int __init iw_cm_init(void)
{
iwcm_wq = create_singlethread_workqueue("iw_cm_wq");
if (!iwcm_wq)
return -ENOMEM;
+ iwcm_ctl_table_hdr = register_net_sysctl_table(&init_net,
+ iwcm_ctl_path,
+ iwcm_ctl_table);
+ if (!iwcm_ctl_table_hdr) {
+ pr_err("iw_cm: couldn't register sysctl paths\n");
+ destroy_workqueue(iwcm_wq);
+ return -ENOMEM;
+ }
+
return 0;
}
static void __exit iw_cm_cleanup(void)
{
+ unregister_net_sysctl_table(iwcm_ctl_table_hdr);
destroy_workqueue(iwcm_wq);
}
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 6cc8e67..486982f 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2592,14 +2592,16 @@ free_domains:
static void cleanup_domain(struct protection_domain *domain)
{
- struct iommu_dev_data *dev_data, *next;
+ struct iommu_dev_data *entry;
unsigned long flags;
write_lock_irqsave(&amd_iommu_devtable_lock, flags);
- list_for_each_entry_safe(dev_data, next, &domain->dev_list, list) {
- __detach_device(dev_data);
- atomic_set(&dev_data->bind, 0);
+ while (!list_empty(&domain->dev_list)) {
+ entry = list_first_entry(&domain->dev_list,
+ struct iommu_dev_data, list);
+ __detach_device(entry);
+ atomic_set(&entry->bind, 0);
}
write_unlock_irqrestore(&amd_iommu_devtable_lock, flags);
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 276ef38..e83aa8e 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2318,19 +2318,34 @@ static bool device_has_rmrr(struct pci_dev *dev)
return false;
}
+/*
+ * There are a couple cases where we need to restrict the functionality of
+ * devices associated with RMRRs. The first is when evaluating a device for
+ * identity mapping because problems exist when devices are moved in and out
+ * of domains and their respective RMRR information is lost. This means that
+ * a device with associated RMRRs will never be in a "passthrough" domain.
+ * The second is use of the device through the IOMMU API. This interface
+ * expects to have full control of the IOVA space for the device. We cannot
+ * satisfy both the requirement that RMRR access is maintained and have an
+ * unencumbered IOVA space. We also have no ability to quiesce the device's
+ * use of the RMRR space or even inform the IOMMU API user of the restriction.
+ * We therefore prevent devices associated with an RMRR from participating in
+ * the IOMMU API, which eliminates them from device assignment.
+ *
+ * In both cases we assume that PCI USB devices with RMRRs have them largely
+ * for historical reasons and that the RMRR space is not actively used post
+ * boot. This exclusion may change if vendors begin to abuse it.
+ */
+static bool device_is_rmrr_locked(struct pci_dev *pdev)
+{
+ return device_has_rmrr(pdev) &&
+ (pdev->class >> 8) != PCI_CLASS_SERIAL_USB;
+}
+
static int iommu_should_identity_map(struct pci_dev *pdev, int startup)
{
- /*
- * We want to prevent any device associated with an RMRR from
- * getting placed into the SI Domain. This is done because
- * problems exist when devices are moved in and out of domains
- * and their respective RMRR info is lost. We exempt USB devices
- * from this process due to their usage of RMRRs that are known
- * to not be needed after BIOS hand-off to OS.
- */
- if (device_has_rmrr(pdev) &&
- (pdev->class >> 8) != PCI_CLASS_SERIAL_USB)
+ if (device_is_rmrr_locked(pdev))
return 0;
if ((iommu_identity_mapping & IDENTMAP_AZALIA) && IS_AZALIA(pdev))
@@ -3981,6 +3996,11 @@ static int intel_iommu_attach_device(struct iommu_domain *domain,
struct intel_iommu *iommu;
int addr_width;
+ if (device_is_rmrr_locked(pdev)) {
+ dev_warn(dev, "Device is ineligible for IOMMU domain attach due to platform RMRR requirement. Contact your platform vendor.\n");
+ return -EPERM;
+ }
+
/* normally pdev is not mapped */
if (unlikely(domain_context_mapped(pdev))) {
struct dmar_domain *old_domain;
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index c706a7b..aec029a 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1233,12 +1233,12 @@ static void error(struct mddev *mddev, struct md_rdev *rdev)
mddev->degraded++;
set_bit(Faulty, &rdev->flags);
spin_unlock_irqrestore(&conf->device_lock, flags);
- /*
- * if recovery is running, make sure it aborts.
- */
- set_bit(MD_RECOVERY_INTR, &mddev->recovery);
} else
set_bit(Faulty, &rdev->flags);
+ /*
+ * if recovery is running, make sure it aborts.
+ */
+ set_bit(MD_RECOVERY_INTR, &mddev->recovery);
set_bit(MD_CHANGE_DEVS, &mddev->flags);
printk(KERN_ALERT
"md/raid1:%s: Disk failure on %s, disabling device.\n"
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 6d05e26..abac83a 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1272,11 +1272,11 @@ static void error(struct mddev *mddev, struct md_rdev *rdev)
spin_lock_irqsave(&conf->device_lock, flags);
mddev->degraded++;
spin_unlock_irqrestore(&conf->device_lock, flags);
- /*
- * if recovery is running, make sure it aborts.
- */
- set_bit(MD_RECOVERY_INTR, &mddev->recovery);
}
+ /*
+ * If recovery is running, make sure it aborts.
+ */
+ set_bit(MD_RECOVERY_INTR, &mddev->recovery);
set_bit(Blocked, &rdev->flags);
set_bit(Faulty, &rdev->flags);
set_bit(MD_CHANGE_DEVS, &mddev->flags);
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 7c963c4..c293d9c 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -3240,6 +3240,8 @@ static void handle_stripe(struct stripe_head *sh)
set_bit(R5_Wantwrite, &dev->flags);
if (prexor)
continue;
+ if (s.failed > 1)
+ continue;
if (!test_bit(R5_Insync, &dev->flags) ||
((i == sh->pd_idx || i == sh->qd_idx) &&
s.failed == 0))
diff --git a/drivers/media/dvb/frontends/tda10071.c b/drivers/media/dvb/frontends/tda10071.c
index 0c37434..ba792849 100644
--- a/drivers/media/dvb/frontends/tda10071.c
+++ b/drivers/media/dvb/frontends/tda10071.c
@@ -644,6 +644,7 @@ static int tda10071_set_frontend(struct dvb_frontend *fe,
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret, i;
u8 mode, rolloff, pilot, inversion, div;
+ fe_modulation_t modulation;
dbg("%s: delivery_system=%d modulation=%d frequency=%d " \
"symbol_rate=%d inversion=%d pilot=%d rolloff=%d", __func__,
@@ -677,10 +678,13 @@ static int tda10071_set_frontend(struct dvb_frontend *fe,
switch (c->delivery_system) {
case SYS_DVBS:
+ modulation = QPSK;
rolloff = 0;
pilot = 2;
break;
case SYS_DVBS2:
+ modulation = c->modulation;
+
switch (c->rolloff) {
case ROLLOFF_20:
rolloff = 2;
@@ -722,7 +726,7 @@ static int tda10071_set_frontend(struct dvb_frontend *fe,
for (i = 0, mode = 0xff; i < ARRAY_SIZE(TDA10071_MODCOD); i++) {
if (c->delivery_system == TDA10071_MODCOD[i].delivery_system &&
- c->modulation == TDA10071_MODCOD[i].modulation &&
+ modulation == TDA10071_MODCOD[i].modulation &&
c->fec_inner == TDA10071_MODCOD[i].fec) {
mode = TDA10071_MODCOD[i].val;
dbg("%s: mode found=%02x", __func__, mode);
diff --git a/drivers/media/video/gspca/pac7302.c b/drivers/media/video/gspca/pac7302.c
index 6ddc769..ae433ef 100644
--- a/drivers/media/video/gspca/pac7302.c
+++ b/drivers/media/video/gspca/pac7302.c
@@ -1190,6 +1190,7 @@ static const struct usb_device_id device_table[] = {
{USB_DEVICE(0x093a, 0x2620)},
{USB_DEVICE(0x093a, 0x2621)},
{USB_DEVICE(0x093a, 0x2622), .driver_info = FL_VFLIP},
+ {USB_DEVICE(0x093a, 0x2623), .driver_info = FL_VFLIP},
{USB_DEVICE(0x093a, 0x2624), .driver_info = FL_VFLIP},
{USB_DEVICE(0x093a, 0x2625)},
{USB_DEVICE(0x093a, 0x2626)},
diff --git a/drivers/mtd/ftl.c b/drivers/mtd/ftl.c
index c7382bb..65fc4af 100644
--- a/drivers/mtd/ftl.c
+++ b/drivers/mtd/ftl.c
@@ -1074,7 +1074,6 @@ static void ftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
return;
}
- ftl_freepart(partition);
kfree(partition);
}
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index b74cdf6..fed39de 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -455,6 +455,7 @@ static int macvlan_init(struct net_device *dev)
(lowerdev->state & MACVLAN_STATE_MASK);
dev->features = lowerdev->features & MACVLAN_FEATURES;
dev->features |= NETIF_F_LLTX;
+ dev->vlan_features = lowerdev->vlan_features & MACVLAN_FEATURES;
dev->gso_max_size = lowerdev->gso_max_size;
dev->iflink = lowerdev->ifindex;
dev->hard_header_len = lowerdev->hard_header_len;
diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c
index 2b349d3..c974581 100644
--- a/drivers/net/ppp/pptp.c
+++ b/drivers/net/ppp/pptp.c
@@ -281,7 +281,7 @@ static int pptp_xmit(struct ppp_channel *chan, struct sk_buff *skb)
nf_reset(skb);
skb->ip_summed = CHECKSUM_NONE;
- ip_select_ident(skb, &rt->dst, NULL);
+ ip_select_ident(skb, NULL);
ip_send_check(iph);
ip_local_out(skb);
diff --git a/drivers/net/wireless/ath/carl9170/carl9170.h b/drivers/net/wireless/ath/carl9170/carl9170.h
index 6cfbb41..8bcf6b9 100644
--- a/drivers/net/wireless/ath/carl9170/carl9170.h
+++ b/drivers/net/wireless/ath/carl9170/carl9170.h
@@ -265,6 +265,7 @@ struct ar9170 {
atomic_t rx_work_urbs;
atomic_t rx_pool_urbs;
kernel_ulong_t features;
+ bool usb_ep_cmd_is_bulk;
/* firmware settings */
struct completion fw_load_wait;
diff --git a/drivers/net/wireless/ath/carl9170/usb.c b/drivers/net/wireless/ath/carl9170/usb.c
index 333b69e..5538596 100644
--- a/drivers/net/wireless/ath/carl9170/usb.c
+++ b/drivers/net/wireless/ath/carl9170/usb.c
@@ -614,9 +614,16 @@ int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd,
goto err_free;
}
- usb_fill_int_urb(urb, ar->udev, usb_sndintpipe(ar->udev,
- AR9170_USB_EP_CMD), cmd, cmd->hdr.len + 4,
- carl9170_usb_cmd_complete, ar, 1);
+ if (ar->usb_ep_cmd_is_bulk)
+ usb_fill_bulk_urb(urb, ar->udev,
+ usb_sndbulkpipe(ar->udev, AR9170_USB_EP_CMD),
+ cmd, cmd->hdr.len + 4,
+ carl9170_usb_cmd_complete, ar);
+ else
+ usb_fill_int_urb(urb, ar->udev,
+ usb_sndintpipe(ar->udev, AR9170_USB_EP_CMD),
+ cmd, cmd->hdr.len + 4,
+ carl9170_usb_cmd_complete, ar, 1);
if (free_buf)
urb->transfer_flags |= URB_FREE_BUFFER;
@@ -1025,9 +1032,10 @@ static void carl9170_usb_firmware_step2(const struct firmware *fw,
static int carl9170_usb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
+ struct usb_endpoint_descriptor *ep;
struct ar9170 *ar;
struct usb_device *udev;
- int err;
+ int i, err;
err = usb_reset_device(interface_to_usbdev(intf));
if (err)
@@ -1043,6 +1051,21 @@ static int carl9170_usb_probe(struct usb_interface *intf,
ar->intf = intf;
ar->features = id->driver_info;
+ /* We need to remember the type of endpoint 4 because it differs
+ * between high- and full-speed configuration. The high-speed
+ * configuration specifies it as interrupt and the full-speed
+ * configuration as bulk endpoint. This information is required
+ * later when sending urbs to that endpoint.
+ */
+ for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; ++i) {
+ ep = &intf->cur_altsetting->endpoint[i].desc;
+
+ if (usb_endpoint_num(ep) == AR9170_USB_EP_CMD &&
+ usb_endpoint_dir_out(ep) &&
+ usb_endpoint_type(ep) == USB_ENDPOINT_XFER_BULK)
+ ar->usb_ep_cmd_is_bulk = true;
+ }
+
usb_set_intfdata(intf, ar);
SET_IEEE80211_DEV(ar->hw, &intf->dev);
diff --git a/drivers/sbus/char/bbc_envctrl.c b/drivers/sbus/char/bbc_envctrl.c
index 160e751..0787b97 100644
--- a/drivers/sbus/char/bbc_envctrl.c
+++ b/drivers/sbus/char/bbc_envctrl.c
@@ -452,6 +452,9 @@ static void attach_one_temp(struct bbc_i2c_bus *bp, struct platform_device *op,
if (!tp)
return;
+ INIT_LIST_HEAD(&tp->bp_list);
+ INIT_LIST_HEAD(&tp->glob_list);
+
tp->client = bbc_i2c_attach(bp, op);
if (!tp->client) {
kfree(tp);
@@ -497,6 +500,9 @@ static void attach_one_fan(struct bbc_i2c_bus *bp, struct platform_device *op,
if (!fp)
return;
+ INIT_LIST_HEAD(&fp->bp_list);
+ INIT_LIST_HEAD(&fp->glob_list);
+
fp->client = bbc_i2c_attach(bp, op);
if (!fp->client) {
kfree(fp);
diff --git a/drivers/sbus/char/bbc_i2c.c b/drivers/sbus/char/bbc_i2c.c
index 5426682..7179f72 100644
--- a/drivers/sbus/char/bbc_i2c.c
+++ b/drivers/sbus/char/bbc_i2c.c
@@ -301,13 +301,18 @@ static struct bbc_i2c_bus * __init attach_one_i2c(struct platform_device *op, in
if (!bp)
return NULL;
+ INIT_LIST_HEAD(&bp->temps);
+ INIT_LIST_HEAD(&bp->fans);
+
bp->i2c_control_regs = of_ioremap(&op->resource[0], 0, 0x2, "bbc_i2c_regs");
if (!bp->i2c_control_regs)
goto fail;
- bp->i2c_bussel_reg = of_ioremap(&op->resource[1], 0, 0x1, "bbc_i2c_bussel");
- if (!bp->i2c_bussel_reg)
- goto fail;
+ if (op->num_resources == 2) {
+ bp->i2c_bussel_reg = of_ioremap(&op->resource[1], 0, 0x1, "bbc_i2c_bussel");
+ if (!bp->i2c_bussel_reg)
+ goto fail;
+ }
bp->waiting = 0;
init_waitqueue_head(&bp->wq);
diff --git a/drivers/scsi/bfa/bfa_ioc.h b/drivers/scsi/bfa/bfa_ioc.h
index 546d46b..506a3ee 100644
--- a/drivers/scsi/bfa/bfa_ioc.h
+++ b/drivers/scsi/bfa/bfa_ioc.h
@@ -72,7 +72,7 @@ struct bfa_sge_s {
} while (0)
#define bfa_swap_words(_x) ( \
- ((_x) << 32) | ((_x) >> 32))
+ ((u64)(_x) << 32) | ((u64)(_x) >> 32))
#ifdef __BIG_ENDIAN
#define bfa_sge_to_be(_x)
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 5b7e1bf..603a2cb 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -2769,7 +2769,7 @@ static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
}
if (ioc->Request.Type.Direction == XFER_WRITE) {
if (copy_from_user(buff[sg_used], data_ptr, sz)) {
- status = -ENOMEM;
+ status = -EFAULT;
goto cleanup1;
}
} else
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index cd4ac38..0bdc4a7 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -793,6 +793,14 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
scsi_next_command(cmd);
return;
}
+ } else if (blk_rq_bytes(req) == 0 && result && !sense_deferred) {
+ /*
+ * Certain non BLOCK_PC requests are commands that don't
+ * actually transfer anything (FLUSH), so cannot use
+ * good_bytes != blk_rq_bytes(req) as the signal for an error.
+ * This sets the error explicitly for the problem case.
+ */
+ error = __scsi_error_from_host_byte(cmd, result);
}
/* no bidi support for !REQ_TYPE_BLOCK_PC yet */
diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c
index 8960f1a..c43a9e8 100644
--- a/drivers/staging/hv/storvsc_drv.c
+++ b/drivers/staging/hv/storvsc_drv.c
@@ -32,6 +32,7 @@
#include <linux/module.h>
#include <linux/device.h>
#include <linux/hyperv.h>
+#include <linux/blkdev.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_host.h>
@@ -1129,6 +1130,16 @@ static void storvsc_command_completion(struct hv_storvsc_request *request)
kmem_cache_free(host_dev->request_pool, cmd_request);
}
+/*
+ * The host guarantees to respond to each command, although I/O latencies might
+ * be unbounded on Azure. Reset the timer unconditionally to give the host a
+ * chance to perform EH.
+ */
+static enum blk_eh_timer_return storvsc_eh_timed_out(struct scsi_cmnd *scmnd)
+{
+ return BLK_EH_RESET_TIMER;
+}
+
static bool storvsc_check_scsi_cmd(struct scsi_cmnd *scmnd)
{
bool allowed = true;
@@ -1305,6 +1316,7 @@ static struct scsi_host_template scsi_driver = {
.bios_param = storvsc_get_chs,
.queuecommand = storvsc_queuecommand,
.eh_host_reset_handler = storvsc_host_reset_handler,
+ .eh_timed_out = storvsc_eh_timed_out,
.slave_alloc = storvsc_device_alloc,
.slave_configure = storvsc_device_configure,
.cmd_per_lun = 1,
diff --git a/drivers/staging/vt6655/bssdb.c b/drivers/staging/vt6655/bssdb.c
index 577599e..ed4259c 100644
--- a/drivers/staging/vt6655/bssdb.c
+++ b/drivers/staging/vt6655/bssdb.c
@@ -1083,7 +1083,7 @@ start:
pDevice->byERPFlag &= ~(WLAN_SET_ERP_USE_PROTECTION(1));
}
-{
+ if (pDevice->eCommandState == WLAN_ASSOCIATE_WAIT) {
pDevice->byReAssocCount++;
if((pDevice->byReAssocCount > 10) && (pDevice->bLinkPass != true)) { //10 sec timeout
printk("Re-association timeout!!!\n");
diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c
index d8dd784..d540a06 100644
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -2679,6 +2679,7 @@ static irqreturn_t device_intr(int irq, void *dev_instance) {
unsigned char byData = 0;
int ii= 0;
// unsigned char byRSSI;
+ unsigned long flags;
MACvReadISR(pDevice->PortOffset, &pDevice->dwIsr);
@@ -2704,7 +2705,8 @@ static irqreturn_t device_intr(int irq, void *dev_instance) {
handled = 1;
MACvIntDisable(pDevice->PortOffset);
- spin_lock_irq(&pDevice->lock);
+
+ spin_lock_irqsave(&pDevice->lock, flags);
//Make sure current page is 0
VNSvInPortB(pDevice->PortOffset + MAC_REG_PAGE1SEL, &byOrgPageSel);
@@ -2952,7 +2954,8 @@ static irqreturn_t device_intr(int irq, void *dev_instance) {
MACvSelectPage1(pDevice->PortOffset);
}
- spin_unlock_irq(&pDevice->lock);
+ spin_unlock_irqrestore(&pDevice->lock, flags);
+
MACvIntEnable(pDevice->PortOffset, IMR_MASK_VALUE);
return IRQ_RETVAL(handled);
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 488214a..d7162a2 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -225,6 +225,9 @@ static void uart_shutdown(struct tty_struct *tty, struct uart_state *state)
/*
* Turn off DTR and RTS early.
*/
+ if (uart_console(uport) && tty)
+ uport->cons->cflag = tty->termios->c_cflag;
+
if (!tty || (tty->termios->c_cflag & HUPCL))
uart_clear_mctrl(uport, TIOCM_DTR | TIOCM_RTS);
diff --git a/drivers/tty/serial/sunsab.c b/drivers/tty/serial/sunsab.c
index b5fa2a5..5d80bb9 100644
--- a/drivers/tty/serial/sunsab.c
+++ b/drivers/tty/serial/sunsab.c
@@ -156,6 +156,15 @@ receive_chars(struct uart_sunsab_port *up,
(up->port.line == up->port.cons->index))
saw_console_brk = 1;
+ if (count == 0) {
+ if (unlikely(stat->sreg.isr1 & SAB82532_ISR1_BRK)) {
+ stat->sreg.isr0 &= ~(SAB82532_ISR0_PERR |
+ SAB82532_ISR0_FERR);
+ up->port.icount.brk++;
+ uart_handle_break(&up->port);
+ }
+ }
+
for (i = 0; i < count; i++) {
unsigned char ch = buf[i], flag;
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 3807294..f08732b 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2651,6 +2651,43 @@ static int finish_port_resume(struct usb_device *udev)
}
/*
+ * There are some SS USB devices which take longer time for link training.
+ * XHCI specs 4.19.4 says that when Link training is successful, port
+ * sets CSC bit to 1. So if SW reads port status before successful link
+ * training, then it will not find device to be present.
+ * USB Analyzer log with such buggy devices show that in some cases
+ * device switch on the RX termination after long delay of host enabling
+ * the VBUS. In few other cases it has been seen that device fails to
+ * negotiate link training in first attempt. It has been
+ * reported till now that few devices take as long as 2000 ms to train
+ * the link after host enabling its VBUS and termination. Following
+ * routine implements a 2000 ms timeout for link training. If in a case
+ * link trains before timeout, loop will exit earlier.
+ *
+ * FIXME: If a device was connected before suspend, but was removed
+ * while system was asleep, then the loop in the following routine will
+ * only exit at timeout.
+ *
+ * This routine should only be called when persist is enabled for a SS
+ * device.
+ */
+static int wait_for_ss_port_enable(struct usb_device *udev,
+ struct usb_hub *hub, int *port1,
+ u16 *portchange, u16 *portstatus)
+{
+ int status = 0, delay_ms = 0;
+
+ while (delay_ms < 2000) {
+ if (status || *portstatus & USB_PORT_STAT_CONNECTION)
+ break;
+ msleep(20);
+ delay_ms += 20;
+ status = hub_port_status(hub, *port1, portstatus, portchange);
+ }
+ return status;
+}
+
+/*
* usb_port_resume - re-activate a suspended usb device's upstream port
* @udev: device to re-activate, not a root hub
* Context: must be able to sleep; device not locked; pm locks held
@@ -2742,6 +2779,10 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg)
clear_bit(port1, hub->busy_bits);
+ if (udev->persist_enabled && hub_is_superspeed(hub->hdev))
+ status = wait_for_ss_port_enable(udev, hub, &port1, &portchange,
+ &portstatus);
+
status = check_port_resume_type(udev,
hub, port1, status, portchange, portstatus);
if (status == 0)
@@ -3354,6 +3395,7 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1,
le16_to_cpu(hub->descriptor->wHubCharacteristics);
struct usb_device *udev;
int status, i;
+ static int unreliable_port = -1;
dev_dbg (hub_dev,
"port %d, status %04x, change %04x, %s\n",
@@ -3415,10 +3457,11 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1,
USB_PORT_STAT_C_ENABLE)) {
status = hub_port_debounce(hub, port1);
if (status < 0) {
- if (printk_ratelimit())
+ if (port1 != unreliable_port && printk_ratelimit())
dev_err(hub_dev, "connect-debounce failed, "
"port %d disabled\n", port1);
portstatus &= ~USB_PORT_STAT_CONNECTION;
+ unreliable_port = port1;
} else {
portstatus = status;
}
diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c
index e0ae777..6c43152 100644
--- a/drivers/usb/host/ohci-q.c
+++ b/drivers/usb/host/ohci-q.c
@@ -294,8 +294,7 @@ static void periodic_unlink (struct ohci_hcd *ohci, struct ed *ed)
* - ED_OPER: when there's any request queued, the ED gets rescheduled
* immediately. HC should be working on them.
*
- * - ED_IDLE: when there's no TD queue. there's no reason for the HC
- * to care about this ED; safe to disable the endpoint.
+ * - ED_IDLE: when there's no TD queue or the HC isn't running.
*
* When finish_unlinks() runs later, after SOF interrupt, it will often
* complete one or more URB unlinks before making that state change.
@@ -909,6 +908,10 @@ rescan_all:
int completed, modified;
__hc32 *prev;
+ /* Is this ED already invisible to the hardware? */
+ if (ed->state == ED_IDLE)
+ goto ed_idle;
+
/* only take off EDs that the HC isn't using, accounting for
* frame counter wraps and EDs with partially retired TDs
*/
@@ -938,12 +941,20 @@ skip_ed:
}
}
+ /* ED's now officially unlinked, hc doesn't see */
+ ed->state = ED_IDLE;
+ if (quirk_zfmicro(ohci) && ed->type == PIPE_INTERRUPT)
+ ohci->eds_scheduled--;
+ ed->hwHeadP &= ~cpu_to_hc32(ohci, ED_H);
+ ed->hwNextED = 0;
+ wmb();
+ ed->hwINFO &= ~cpu_to_hc32(ohci, ED_SKIP | ED_DEQUEUE);
+ed_idle:
+
/* reentrancy: if we drop the schedule lock, someone might
* have modified this list. normally it's just prepending
* entries (which we'd ignore), but paranoia won't hurt.
*/
- *last = ed->ed_next;
- ed->ed_next = NULL;
modified = 0;
/* unlink urbs as requested, but rescan the list after
@@ -1001,19 +1012,20 @@ rescan_this:
if (completed && !list_empty (&ed->td_list))
goto rescan_this;
- /* ED's now officially unlinked, hc doesn't see */
- ed->state = ED_IDLE;
- if (quirk_zfmicro(ohci) && ed->type == PIPE_INTERRUPT)
- ohci->eds_scheduled--;
- ed->hwHeadP &= ~cpu_to_hc32(ohci, ED_H);
- ed->hwNextED = 0;
- wmb ();
- ed->hwINFO &= ~cpu_to_hc32 (ohci, ED_SKIP | ED_DEQUEUE);
-
- /* but if there's work queued, reschedule */
- if (!list_empty (&ed->td_list)) {
- if (HC_IS_RUNNING(ohci_to_hcd(ohci)->state))
- ed_schedule (ohci, ed);
+ /*
+ * If no TDs are queued, take ED off the ed_rm_list.
+ * Otherwise, if the HC is running, reschedule.
+ * If not, leave it on the list for further dequeues.
+ */
+ if (list_empty(&ed->td_list)) {
+ *last = ed->ed_next;
+ ed->ed_next = NULL;
+ } else if (HC_IS_RUNNING(ohci_to_hcd(ohci)->state)) {
+ *last = ed->ed_next;
+ ed->ed_next = NULL;
+ ed_schedule(ohci, ed);
+ } else {
+ last = &ed->ed_next;
}
if (modified)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 15685c3..e9ce957 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -98,6 +98,10 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
/* AMD PLL quirk */
if (pdev->vendor == PCI_VENDOR_ID_AMD && usb_amd_find_chipset_info())
xhci->quirks |= XHCI_AMD_PLL_FIX;
+
+ if (pdev->vendor == PCI_VENDOR_ID_AMD)
+ xhci->quirks |= XHCI_TRUST_TX_LENGTH;
+
if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
pdev->device == PCI_DEVICE_ID_INTEL_PANTHERPOINT_XHCI) {
xhci->quirks |= XHCI_EP_LIMIT_QUIRK;
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index bc5ee84..4b6abb6 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -572,9 +572,12 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
struct xhci_virt_device *dev = xhci->devs[slot_id];
struct xhci_virt_ep *ep = &dev->eps[ep_index];
struct xhci_ring *ep_ring;
- struct xhci_generic_trb *trb;
+ struct xhci_segment *new_seg;
+ union xhci_trb *new_deq;
dma_addr_t addr;
u64 hw_dequeue;
+ bool cycle_found = false;
+ bool td_last_trb_found = false;
ep_ring = xhci_triad_to_transfer_ring(xhci, slot_id,
ep_index, stream_id);
@@ -598,44 +601,45 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
hw_dequeue = le64_to_cpu(ep_ctx->deq);
}
- /* Find virtual address and segment of hardware dequeue pointer */
- state->new_deq_seg = ep_ring->deq_seg;
- state->new_deq_ptr = ep_ring->dequeue;
- while (xhci_trb_virt_to_dma(state->new_deq_seg, state->new_deq_ptr)
- != (dma_addr_t)(hw_dequeue & ~0xf)) {
- next_trb(xhci, ep_ring, &state->new_deq_seg,
- &state->new_deq_ptr);
- if (state->new_deq_ptr == ep_ring->dequeue) {
- WARN_ON(1);
- return;
- }
- }
+ new_seg = ep_ring->deq_seg;
+ new_deq = ep_ring->dequeue;
+ state->new_cycle_state = hw_dequeue & 0x1;
+
/*
- * Find cycle state for last_trb, starting at old cycle state of
- * hw_dequeue. If there is only one segment ring, find_trb_seg() will
- * return immediately and cannot toggle the cycle state if this search
- * wraps around, so add one more toggle manually in that case.
+ * We want to find the pointer, segment and cycle state of the new trb
+ * (the one after current TD's last_trb). We know the cycle state at
+ * hw_dequeue, so walk the ring until both hw_dequeue and last_trb are
+ * found.
*/
- state->new_cycle_state = hw_dequeue & 0x1;
- if (ep_ring->first_seg == ep_ring->first_seg->next &&
- cur_td->last_trb < state->new_deq_ptr)
- state->new_cycle_state ^= 0x1;
-
- state->new_deq_ptr = cur_td->last_trb;
- xhci_dbg(xhci, "Finding segment containing last TRB in TD.\n");
- state->new_deq_seg = find_trb_seg(state->new_deq_seg,
- state->new_deq_ptr, &state->new_cycle_state);
- if (!state->new_deq_seg) {
- WARN_ON(1);
- return;
- }
+ do {
+ if (!cycle_found && xhci_trb_virt_to_dma(new_seg, new_deq)
+ == (dma_addr_t)(hw_dequeue & ~0xf)) {
+ cycle_found = true;
+ if (td_last_trb_found)
+ break;
+ }
+ if (new_deq == cur_td->last_trb)
+ td_last_trb_found = true;
+
+ if (cycle_found &&
+ TRB_TYPE_LINK_LE32(new_deq->generic.field[3]) &&
+ new_deq->generic.field[3] & cpu_to_le32(LINK_TOGGLE))
+ state->new_cycle_state ^= 0x1;
+
+ next_trb(xhci, ep_ring, &new_seg, &new_deq);
+
+ /* Search wrapped around, bail out */
+ if (new_deq == ep->ring->dequeue) {
+ xhci_err(xhci, "Error: Failed finding new dequeue state\n");
+ state->new_deq_seg = NULL;
+ state->new_deq_ptr = NULL;
+ return;
+ }
+
+ } while (!cycle_found || !td_last_trb_found);
- /* Increment to find next TRB after last_trb. Cycle if appropriate. */
- trb = &state->new_deq_ptr->generic;
- if (TRB_TYPE_LINK_LE32(trb->field[3]) &&
- (trb->field[3] & cpu_to_le32(LINK_TOGGLE)))
- state->new_cycle_state ^= 0x1;
- next_trb(xhci, ep_ring, &state->new_deq_seg, &state->new_deq_ptr);
+ state->new_deq_seg = new_seg;
+ state->new_deq_ptr = new_deq;
/* Don't update the ring cycle state for the producer (us). */
xhci_dbg(xhci, "Cycle state = 0x%x\n", state->new_cycle_state);
@@ -2433,7 +2437,8 @@ static int handle_tx_event(struct xhci_hcd *xhci,
* last TRB of the previous TD. The command completion handle
* will take care the rest.
*/
- if (!event_seg && trb_comp_code == COMP_STOP_INVAL) {
+ if (!event_seg && (trb_comp_code == COMP_STOP ||
+ trb_comp_code == COMP_STOP_INVAL)) {
ret = 0;
goto cleanup;
}
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 457a7ac..4cc1804 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -2819,6 +2819,9 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci,
ep_index, ep->stopped_stream, ep->stopped_td,
&deq_state);
+ if (!deq_state.new_deq_ptr || !deq_state.new_deq_seg)
+ return;
+
/* HW with the reset endpoint quirk will use the saved dequeue state to
* issue a configure endpoint command later.
*/
diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c
index 7af163d..f1bfd01 100644
--- a/drivers/usb/misc/sisusbvga/sisusb.c
+++ b/drivers/usb/misc/sisusbvga/sisusb.c
@@ -3248,6 +3248,7 @@ static const struct usb_device_id sisusb_table[] = {
{ USB_DEVICE(0x0711, 0x0918) },
{ USB_DEVICE(0x0711, 0x0920) },
{ USB_DEVICE(0x0711, 0x0950) },
+ { USB_DEVICE(0x0711, 0x5200) },
{ USB_DEVICE(0x182d, 0x021c) },
{ USB_DEVICE(0x182d, 0x0269) },
{ }
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index d6e6205..0d34f85 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -162,6 +162,7 @@ static struct usb_device_id id_table_combined [] = {
{ USB_DEVICE(FTDI_VID, FTDI_AMC232_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_CANDAPTER_PID) },
+ { USB_DEVICE(FTDI_VID, FTDI_BM_ATOM_NANO_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_NXTCAM_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_EV3CON_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_0_PID) },
@@ -684,6 +685,8 @@ static struct usb_device_id id_table_combined [] = {
{ USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) },
{ USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) },
{ USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) },
+ { USB_DEVICE(XSENS_VID, XSENS_CONVERTER_PID) },
+ { USB_DEVICE(XSENS_VID, XSENS_MTW_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_OMNI1509) },
{ USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) },
@@ -956,6 +959,8 @@ static struct usb_device_id id_table_combined [] = {
{ USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_2_PID) },
{ USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_3_PID) },
{ USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_4_PID) },
+ /* ekey Devices */
+ { USB_DEVICE(FTDI_VID, FTDI_EKEY_CONV_USB_PID) },
{ }, /* Optional parameter entry */
{ } /* Terminating entry */
};
diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
index 55af915..cbcb1e6 100644
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -42,6 +42,8 @@
/* www.candapter.com Ewert Energy Systems CANdapter device */
#define FTDI_CANDAPTER_PID 0x9F80 /* Product Id */
+#define FTDI_BM_ATOM_NANO_PID 0xa559 /* Basic Micro ATOM Nano USB2Serial */
+
/*
* Texas Instruments XDS100v2 JTAG / BeagleBone A3
* http://processors.wiki.ti.com/index.php/XDS100
@@ -140,12 +142,15 @@
/*
* Xsens Technologies BV products (http://www.xsens.com).
*/
-#define XSENS_CONVERTER_0_PID 0xD388
-#define XSENS_CONVERTER_1_PID 0xD389
+#define XSENS_VID 0x2639
+#define XSENS_CONVERTER_PID 0xD00D /* Xsens USB-serial converter */
+#define XSENS_MTW_PID 0x0200 /* Xsens MTw */
+#define XSENS_CONVERTER_0_PID 0xD388 /* Xsens USB converter */
+#define XSENS_CONVERTER_1_PID 0xD389 /* Xsens Wireless Receiver */
#define XSENS_CONVERTER_2_PID 0xD38A
-#define XSENS_CONVERTER_3_PID 0xD38B
-#define XSENS_CONVERTER_4_PID 0xD38C
-#define XSENS_CONVERTER_5_PID 0xD38D
+#define XSENS_CONVERTER_3_PID 0xD38B /* Xsens USB-serial converter */
+#define XSENS_CONVERTER_4_PID 0xD38C /* Xsens Wireless Receiver */
+#define XSENS_CONVERTER_5_PID 0xD38D /* Xsens Awinda Station */
#define XSENS_CONVERTER_6_PID 0xD38E
#define XSENS_CONVERTER_7_PID 0xD38F
@@ -1369,3 +1374,8 @@
#define BRAINBOXES_US_160_6_PID 0x9006 /* US-160 16xRS232 1Mbaud Port 11 and 12 */
#define BRAINBOXES_US_160_7_PID 0x9007 /* US-160 16xRS232 1Mbaud Port 13 and 14 */
#define BRAINBOXES_US_160_8_PID 0x9008 /* US-160 16xRS232 1Mbaud Port 15 and 16 */
+
+/*
+ * ekey biometric systems GmbH (http://ekey.net/)
+ */
+#define FTDI_EKEY_CONV_USB_PID 0xCB08 /* Converter USB */
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 7a1c91e..d8360be 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -496,6 +496,10 @@ static void option_instat_callback(struct urb *urb);
#define INOVIA_VENDOR_ID 0x20a6
#define INOVIA_SEW858 0x1105
+/* VIA Telecom */
+#define VIATELECOM_VENDOR_ID 0x15eb
+#define VIATELECOM_PRODUCT_CDS7 0x0001
+
/* some devices interfaces need special handling due to a number of reasons */
enum option_blacklist_reason {
OPTION_BLACKLIST_NONE = 0,
@@ -1740,6 +1744,7 @@ static const struct usb_device_id option_ids[] = {
{ USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e01, 0xff, 0xff, 0xff) }, /* D-Link DWM-152/C1 */
{ USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e02, 0xff, 0xff, 0xff) }, /* D-Link DWM-156/C1 */
{ USB_DEVICE(INOVIA_VENDOR_ID, INOVIA_SEW858) },
+ { USB_DEVICE(VIATELECOM_VENDOR_ID, VIATELECOM_PRODUCT_CDS7) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, option_ids);
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 45a288c..7ba38ea 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -51,6 +51,7 @@ static const struct usb_device_id id_table[] = {
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) },
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) },
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) },
+ { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ZTEK) },
{ USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) },
{ USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) },
{ USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) },
diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h
index 42bc082..71fd9da 100644
--- a/drivers/usb/serial/pl2303.h
+++ b/drivers/usb/serial/pl2303.h
@@ -22,6 +22,7 @@
#define PL2303_PRODUCT_ID_GPRS 0x0609
#define PL2303_PRODUCT_ID_HCR331 0x331a
#define PL2303_PRODUCT_ID_MOTOROLA 0x0307
+#define PL2303_PRODUCT_ID_ZTEK 0xe1f1
#define ATEN_VENDOR_ID 0x0557
#define ATEN_VENDOR_ID2 0x0547
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 8f76a2b..803806c 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -791,29 +791,39 @@ int usb_serial_probe(struct usb_interface *interface,
if (usb_endpoint_is_bulk_in(endpoint)) {
/* we found a bulk in endpoint */
dbg("found bulk in on endpoint %d", i);
- bulk_in_endpoint[num_bulk_in] = endpoint;
- ++num_bulk_in;
+ if (num_bulk_in < MAX_NUM_PORTS) {
+ bulk_in_endpoint[num_bulk_in] = endpoint;
+ ++num_bulk_in;
+ }
}
if (usb_endpoint_is_bulk_out(endpoint)) {
/* we found a bulk out endpoint */
dbg("found bulk out on endpoint %d", i);
- bulk_out_endpoint[num_bulk_out] = endpoint;
- ++num_bulk_out;
+ if (num_bulk_out < MAX_NUM_PORTS) {
+ bulk_out_endpoint[num_bulk_out] = endpoint;
+ ++num_bulk_out;
+ }
}
if (usb_endpoint_is_int_in(endpoint)) {
/* we found a interrupt in endpoint */
dbg("found interrupt in on endpoint %d", i);
- interrupt_in_endpoint[num_interrupt_in] = endpoint;
- ++num_interrupt_in;
+ if (num_interrupt_in < MAX_NUM_PORTS) {
+ interrupt_in_endpoint[num_interrupt_in] =
+ endpoint;
+ ++num_interrupt_in;
+ }
}
if (usb_endpoint_is_int_out(endpoint)) {
/* we found an interrupt out endpoint */
dbg("found interrupt out on endpoint %d", i);
- interrupt_out_endpoint[num_interrupt_out] = endpoint;
- ++num_interrupt_out;
+ if (num_interrupt_out < MAX_NUM_PORTS) {
+ interrupt_out_endpoint[num_interrupt_out] =
+ endpoint;
+ ++num_interrupt_out;
+ }
}
}
@@ -836,8 +846,10 @@ int usb_serial_probe(struct usb_interface *interface,
if (usb_endpoint_is_int_in(endpoint)) {
/* we found a interrupt in endpoint */
dbg("found interrupt in for Prolific device on separate interface");
- interrupt_in_endpoint[num_interrupt_in] = endpoint;
- ++num_interrupt_in;
+ if (num_interrupt_in < MAX_NUM_PORTS) {
+ interrupt_in_endpoint[num_interrupt_in] = endpoint;
+ ++num_interrupt_in;
+ }
}
}
}
@@ -876,6 +888,11 @@ int usb_serial_probe(struct usb_interface *interface,
num_ports = type->num_ports;
}
+ if (num_ports > MAX_NUM_PORTS) {
+ dev_warn(&interface->dev, "too many ports requested: %d\n", num_ports);
+ num_ports = MAX_NUM_PORTS;
+ }
+
serial->num_ports = num_ports;
serial->num_bulk_in = num_bulk_in;
serial->num_bulk_out = num_bulk_out;
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c
index 0ec60cd..5481809 100644
--- a/drivers/usb/serial/whiteheat.c
+++ b/drivers/usb/serial/whiteheat.c
@@ -1006,6 +1006,10 @@ static void command_port_read_callback(struct urb *urb)
dbg("%s - command_info is NULL, exiting.", __func__);
return;
}
+ if (!urb->actual_length) {
+ dev_dbg(&urb->dev->dev, "%s - empty response, exiting.\n", __func__);
+ return;
+ }
if (status) {
dbg("%s - nonzero urb status: %d", __func__, status);
if (status != -ENOENT)
@@ -1027,7 +1031,8 @@ static void command_port_read_callback(struct urb *urb)
/* These are unsolicited reports from the firmware, hence no
waiting command to wakeup */
dbg("%s - event received", __func__);
- } else if (data[0] == WHITEHEAT_GET_DTR_RTS) {
+ } else if ((data[0] == WHITEHEAT_GET_DTR_RTS) &&
+ (urb->actual_length - 1 <= sizeof(command_info->result_buffer))) {
memcpy(command_info->result_buffer, &data[1],
urb->actual_length - 1);
command_info->command_finished = WHITEHEAT_CMD_COMPLETE;
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index c7fb3a4..d7c9b68 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -717,7 +717,7 @@ again:
found_next = 1;
if (ret != 0)
goto insert;
- slot = 0;
+ slot = path->slots[0];
}
btrfs_item_key_to_cpu(path->nodes[0], &found_key, slot);
if (found_key.objectid != BTRFS_EXTENT_CSUM_OBJECTID ||
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 20431b4..c0c51e1 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1638,6 +1638,12 @@ unlink_target:
target_dentry, toName);
}
+ /* force revalidate to go get info when needed */
+ CIFS_I(source_dir)->time = CIFS_I(target_dir)->time = 0;
+
+ source_dir->i_ctime = source_dir->i_mtime = target_dir->i_ctime =
+ target_dir->i_mtime = current_fs_time(source_dir->i_sb);
+
cifs_rename_exit:
kfree(info_buf_source);
kfree(fromName);
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index fb001cd..01951c6b 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -380,7 +380,7 @@ EXPORT_SYMBOL_GPL(debugfs_remove);
*/
void debugfs_remove_recursive(struct dentry *dentry)
{
- struct dentry *child, *next, *parent;
+ struct dentry *child, *parent;
if (!dentry)
return;
@@ -392,31 +392,49 @@ void debugfs_remove_recursive(struct dentry *dentry)
parent = dentry;
down:
mutex_lock(&parent->d_inode->i_mutex);
- list_for_each_entry_safe(child, next, &parent->d_subdirs, d_u.d_child) {
+ loop:
+ /*
+ * The parent->d_subdirs is protected by the d_lock. Outside that
+ * lock, the child can be unlinked and set to be freed which can
+ * use the d_u.d_child as the rcu head and corrupt this list.
+ */
+ spin_lock(&parent->d_lock);
+ list_for_each_entry(child, &parent->d_subdirs, d_u.d_child) {
if (!debugfs_positive(child))
continue;
/* perhaps simple_empty(child) makes more sense */
if (!list_empty(&child->d_subdirs)) {
+ spin_unlock(&parent->d_lock);
mutex_unlock(&parent->d_inode->i_mutex);
parent = child;
goto down;
}
- up:
+
+ spin_unlock(&parent->d_lock);
+
if (!__debugfs_remove(child, parent))
simple_release_fs(&debugfs_mount, &debugfs_mount_count);
+
+ /*
+ * The parent->d_lock protects agaist child from unlinking
+ * from d_subdirs. When releasing the parent->d_lock we can
+ * no longer trust that the next pointer is valid.
+ * Restart the loop. We'll skip this one with the
+ * debugfs_positive() check.
+ */
+ goto loop;
}
+ spin_unlock(&parent->d_lock);
mutex_unlock(&parent->d_inode->i_mutex);
child = parent;
parent = parent->d_parent;
mutex_lock(&parent->d_inode->i_mutex);
- if (child != dentry) {
- next = list_entry(child->d_u.d_child.next, struct dentry,
- d_u.d_child);
- goto up;
- }
+ if (child != dentry)
+ /* go up */
+ goto loop;
if (!__debugfs_remove(child, parent))
simple_release_fs(&debugfs_mount, &debugfs_mount_count);
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 7168eeb..818b43e 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3128,13 +3128,28 @@ static void ext4_mb_collect_stats(struct ext4_allocation_context *ac)
static void ext4_discard_allocated_blocks(struct ext4_allocation_context *ac)
{
struct ext4_prealloc_space *pa = ac->ac_pa;
- int len;
+ struct ext4_buddy e4b;
+ int err;
- if (pa && pa->pa_type == MB_INODE_PA) {
- len = ac->ac_b_ex.fe_len;
- pa->pa_free += len;
+ if (pa == NULL) {
+ err = ext4_mb_load_buddy(ac->ac_sb, ac->ac_f_ex.fe_group, &e4b);
+ if (err) {
+ /*
+ * This should never happen since we pin the
+ * pages in the ext4_allocation_context so
+ * ext4_mb_load_buddy() should never fail.
+ */
+ WARN(1, "mb_load_buddy failed (%d)", err);
+ return;
+ }
+ ext4_lock_group(ac->ac_sb, ac->ac_f_ex.fe_group);
+ mb_free_blocks(ac->ac_inode, &e4b, ac->ac_f_ex.fe_start,
+ ac->ac_f_ex.fe_len);
+ ext4_unlock_group(ac->ac_sb, ac->ac_f_ex.fe_group);
+ return;
}
-
+ if (pa->pa_type == MB_INODE_PA)
+ pa->pa_free += ac->ac_b_ex.fe_len;
}
/*
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index a5f25a7..2f9197f 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -68,7 +68,7 @@ static void isofs_put_super(struct super_block *sb)
return;
}
-static int isofs_read_inode(struct inode *);
+static int isofs_read_inode(struct inode *, int relocated);
static int isofs_statfs (struct dentry *, struct kstatfs *);
static struct kmem_cache *isofs_inode_cachep;
@@ -1263,7 +1263,7 @@ out_toomany:
goto out;
}
-static int isofs_read_inode(struct inode *inode)
+static int isofs_read_inode(struct inode *inode, int relocated)
{
struct super_block *sb = inode->i_sb;
struct isofs_sb_info *sbi = ISOFS_SB(sb);
@@ -1408,7 +1408,7 @@ static int isofs_read_inode(struct inode *inode)
*/
if (!high_sierra) {
- parse_rock_ridge_inode(de, inode);
+ parse_rock_ridge_inode(de, inode, relocated);
/* if we want uid/gid set, override the rock ridge setting */
if (sbi->s_uid_set)
inode->i_uid = sbi->s_uid;
@@ -1487,9 +1487,10 @@ static int isofs_iget5_set(struct inode *ino, void *data)
* offset that point to the underlying meta-data for the inode. The
* code below is otherwise similar to the iget() code in
* include/linux/fs.h */
-struct inode *isofs_iget(struct super_block *sb,
- unsigned long block,
- unsigned long offset)
+struct inode *__isofs_iget(struct super_block *sb,
+ unsigned long block,
+ unsigned long offset,
+ int relocated)
{
unsigned long hashval;
struct inode *inode;
@@ -1511,7 +1512,7 @@ struct inode *isofs_iget(struct super_block *sb,
return ERR_PTR(-ENOMEM);
if (inode->i_state & I_NEW) {
- ret = isofs_read_inode(inode);
+ ret = isofs_read_inode(inode, relocated);
if (ret < 0) {
iget_failed(inode);
inode = ERR_PTR(ret);
diff --git a/fs/isofs/isofs.h b/fs/isofs/isofs.h
index 7d33de8..f9c9793 100644
--- a/fs/isofs/isofs.h
+++ b/fs/isofs/isofs.h
@@ -107,7 +107,7 @@ extern int iso_date(char *, int);
struct inode; /* To make gcc happy */
-extern int parse_rock_ridge_inode(struct iso_directory_record *, struct inode *);
+extern int parse_rock_ridge_inode(struct iso_directory_record *, struct inode *, int relocated);
extern int get_rock_ridge_filename(struct iso_directory_record *, char *, struct inode *);
extern int isofs_name_translate(struct iso_directory_record *, char *, struct inode *);
@@ -118,9 +118,24 @@ extern struct dentry *isofs_lookup(struct inode *, struct dentry *, struct namei
extern struct buffer_head *isofs_bread(struct inode *, sector_t);
extern int isofs_get_blocks(struct inode *, sector_t, struct buffer_head **, unsigned long);
-extern struct inode *isofs_iget(struct super_block *sb,
- unsigned long block,
- unsigned long offset);
+struct inode *__isofs_iget(struct super_block *sb,
+ unsigned long block,
+ unsigned long offset,
+ int relocated);
+
+static inline struct inode *isofs_iget(struct super_block *sb,
+ unsigned long block,
+ unsigned long offset)
+{
+ return __isofs_iget(sb, block, offset, 0);
+}
+
+static inline struct inode *isofs_iget_reloc(struct super_block *sb,
+ unsigned long block,
+ unsigned long offset)
+{
+ return __isofs_iget(sb, block, offset, 1);
+}
/* Because the inode number is no longer relevant to finding the
* underlying meta-data for an inode, we are free to choose a more
diff --git a/fs/isofs/rock.c b/fs/isofs/rock.c
index 70e79d0..ee62cc0 100644
--- a/fs/isofs/rock.c
+++ b/fs/isofs/rock.c
@@ -288,12 +288,16 @@ eio:
goto out;
}
+#define RR_REGARD_XA 1
+#define RR_RELOC_DE 2
+
static int
parse_rock_ridge_inode_internal(struct iso_directory_record *de,
- struct inode *inode, int regard_xa)
+ struct inode *inode, int flags)
{
int symlink_len = 0;
int cnt, sig;
+ unsigned int reloc_block;
struct inode *reloc;
struct rock_ridge *rr;
int rootflag;
@@ -305,7 +309,7 @@ parse_rock_ridge_inode_internal(struct iso_directory_record *de,
init_rock_state(&rs, inode);
setup_rock_ridge(de, inode, &rs);
- if (regard_xa) {
+ if (flags & RR_REGARD_XA) {
rs.chr += 14;
rs.len -= 14;
if (rs.len < 0)
@@ -485,12 +489,22 @@ repeat:
"relocated directory\n");
goto out;
case SIG('C', 'L'):
- ISOFS_I(inode)->i_first_extent =
- isonum_733(rr->u.CL.location);
- reloc =
- isofs_iget(inode->i_sb,
- ISOFS_I(inode)->i_first_extent,
- 0);
+ if (flags & RR_RELOC_DE) {
+ printk(KERN_ERR
+ "ISOFS: Recursive directory relocation "
+ "is not supported\n");
+ goto eio;
+ }
+ reloc_block = isonum_733(rr->u.CL.location);
+ if (reloc_block == ISOFS_I(inode)->i_iget5_block &&
+ ISOFS_I(inode)->i_iget5_offset == 0) {
+ printk(KERN_ERR
+ "ISOFS: Directory relocation points to "
+ "itself\n");
+ goto eio;
+ }
+ ISOFS_I(inode)->i_first_extent = reloc_block;
+ reloc = isofs_iget_reloc(inode->i_sb, reloc_block, 0);
if (IS_ERR(reloc)) {
ret = PTR_ERR(reloc);
goto out;
@@ -637,9 +651,11 @@ static char *get_symlink_chunk(char *rpnt, struct rock_ridge *rr, char *plimit)
return rpnt;
}
-int parse_rock_ridge_inode(struct iso_directory_record *de, struct inode *inode)
+int parse_rock_ridge_inode(struct iso_directory_record *de, struct inode *inode,
+ int relocated)
{
- int result = parse_rock_ridge_inode_internal(de, inode, 0);
+ int flags = relocated ? RR_RELOC_DE : 0;
+ int result = parse_rock_ridge_inode_internal(de, inode, flags);
/*
* if rockridge flag was reset and we didn't look for attributes
@@ -647,7 +663,8 @@ int parse_rock_ridge_inode(struct iso_directory_record *de, struct inode *inode)
*/
if ((ISOFS_SB(inode->i_sb)->s_rock_offset == -1)
&& (ISOFS_SB(inode->i_sb)->s_rock == 2)) {
- result = parse_rock_ridge_inode_internal(de, inode, 14);
+ result = parse_rock_ridge_inode_internal(de, inode,
+ flags | RR_REGARD_XA);
}
return result;
}
diff --git a/fs/namespace.c b/fs/namespace.c
index ca4913a..a1e663d 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2333,6 +2333,14 @@ long do_mount(char *dev_name, char *dir_name, char *type_page,
if (flags & MS_RDONLY)
mnt_flags |= MNT_READONLY;
+ /* The default atime for remount is preservation */
+ if ((flags & MS_REMOUNT) &&
+ ((flags & (MS_NOATIME | MS_NODIRATIME | MS_RELATIME |
+ MS_STRICTATIME)) == 0)) {
+ mnt_flags &= ~MNT_ATIME_MASK;
+ mnt_flags |= path.mnt->mnt_flags & MNT_ATIME_MASK;
+ }
+
flags &= ~(MS_NOSUID | MS_NOEXEC | MS_NODEV | MS_ACTIVE | MS_BORN |
MS_NOATIME | MS_NODIRATIME | MS_RELATIME| MS_KERNMOUNT |
MS_STRICTATIME);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 5aea30a..c4a2a68 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2004,24 +2004,31 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
{
struct nfs4_closedata *calldata = data;
struct nfs4_state *state = calldata->state;
+ bool is_rdonly, is_wronly, is_rdwr;
int call_close = 0;
if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
return;
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
- calldata->arg.fmode = FMODE_READ|FMODE_WRITE;
spin_lock(&state->owner->so_lock);
+ is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags);
+ is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags);
+ is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags);
+ /* Calculate the current open share mode */
+ calldata->arg.fmode = 0;
+ if (is_rdonly || is_rdwr)
+ calldata->arg.fmode |= FMODE_READ;
+ if (is_wronly || is_rdwr)
+ calldata->arg.fmode |= FMODE_WRITE;
/* Calculate the change in open mode */
if (state->n_rdwr == 0) {
if (state->n_rdonly == 0) {
- call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags);
- call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
+ call_close |= is_rdonly || is_rdwr;
calldata->arg.fmode &= ~FMODE_READ;
}
if (state->n_wronly == 0) {
- call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags);
- call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
+ call_close |= is_wronly || is_rdwr;
calldata->arg.fmode &= ~FMODE_WRITE;
}
}
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index eb71106..938a77f 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -1916,15 +1916,19 @@ static int do_journal_release(struct reiserfs_transaction_handle *th,
}
reiserfs_mounted_fs_count--;
- /* wait for all commits to finish */
- cancel_delayed_work(&SB_JOURNAL(sb)->j_work);
/*
* We must release the write lock here because
* the workqueue job (flush_async_commit) needs this lock
*/
reiserfs_write_unlock(sb);
- flush_workqueue(commit_wq);
+ /*
+ * Cancel flushing of old commits. Note that this work will not
+ * be requeued because superblock is being shutdown and doesn't
+ * have MS_ACTIVE set.
+ */
+ /* wait for all commits to finish */
+ cancel_delayed_work_sync(&SB_JOURNAL(sb)->j_work);
if (!reiserfs_mounted_fs_count) {
destroy_workqueue(commit_wq);
@@ -4211,8 +4215,15 @@ static int do_journal_end(struct reiserfs_transaction_handle *th,
if (flush) {
flush_commit_list(sb, jl, 1);
flush_journal_list(sb, jl, 1);
- } else if (!(jl->j_state & LIST_COMMIT_PENDING))
- queue_delayed_work(commit_wq, &journal->j_work, HZ / 10);
+ } else if (!(jl->j_state & LIST_COMMIT_PENDING)) {
+ /*
+ * Avoid queueing work when sb is being shut down. Transaction
+ * will be flushed on journal shutdown.
+ */
+ if (sb->s_flags & MS_ACTIVE)
+ queue_delayed_work(commit_wq,
+ &journal->j_work, HZ / 10);
+ }
/* if the next transaction has any chance of wrapping, flush
** transactions that might get overwritten. If any journal lists are very
diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h
index f85c5ab..11670e3 100644
--- a/include/linux/mempolicy.h
+++ b/include/linux/mempolicy.h
@@ -205,7 +205,7 @@ extern struct zonelist *huge_zonelist(struct vm_area_struct *vma,
extern bool init_nodemask_of_mempolicy(nodemask_t *mask);
extern bool mempolicy_nodemask_intersects(struct task_struct *tsk,
const nodemask_t *mask);
-extern unsigned slab_node(struct mempolicy *policy);
+extern unsigned slab_node(void);
extern enum zone_type policy_zone;
diff --git a/include/linux/mount.h b/include/linux/mount.h
index 33fe53d..fc17c4d 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -43,6 +43,7 @@ struct mnt_namespace;
*/
#define MNT_SHARED_MASK (MNT_UNBINDABLE)
#define MNT_PROPAGATION_MASK (MNT_SHARED | MNT_UNBINDABLE)
+#define MNT_ATIME_MASK (MNT_NOATIME | MNT_NODIRATIME | MNT_RELATIME )
#define MNT_INTERNAL 0x4000
diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h
index ba0ddb0..6172a44 100644
--- a/include/net/inetpeer.h
+++ b/include/net/inetpeer.h
@@ -47,13 +47,12 @@ struct inet_peer {
};
/*
* Once inet_peer is queued for deletion (refcnt == -1), following fields
- * are not available: rid, ip_id_count, tcp_ts, tcp_ts_stamp
+ * are not available: rid, tcp_ts, tcp_ts_stamp
* We can share memory with rcu_head to help keep inet_peer small.
*/
union {
struct {
atomic_t rid; /* Frag reception counter */
- atomic_t ip_id_count; /* IP ID for the next packet */
__u32 tcp_ts;
__u32 tcp_ts_stamp;
};
@@ -103,7 +102,7 @@ extern bool inet_peer_xrlim_allow(struct inet_peer *peer, int timeout);
extern void inetpeer_invalidate_tree(int family);
/*
- * temporary check to make sure we dont access rid, ip_id_count, tcp_ts,
+ * temporary check to make sure we dont access rid, tcp_ts,
* tcp_ts_stamp if no refcount is taken on inet_peer
*/
static inline void inet_peer_refcheck(const struct inet_peer *p)
@@ -111,13 +110,4 @@ static inline void inet_peer_refcheck(const struct inet_peer *p)
WARN_ON_ONCE(atomic_read(&p->refcnt) <= 0);
}
-
-/* can be called with or without local BH being disabled */
-static inline int inet_getid(struct inet_peer *p, int more)
-{
- more++;
- inet_peer_refcheck(p);
- return atomic_add_return(more, &p->ip_id_count) - more;
-}
-
#endif /* _NET_INETPEER_H */
diff --git a/include/net/ip.h b/include/net/ip.h
index b935e6c..1ee535b 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -264,9 +264,10 @@ int ip_dont_fragment(struct sock *sk, struct dst_entry *dst)
!(dst_metric_locked(dst, RTAX_MTU)));
}
-extern void __ip_select_ident(struct iphdr *iph, struct dst_entry *dst, int more);
+u32 ip_idents_reserve(u32 hash, int segs);
+void __ip_select_ident(struct iphdr *iph, int segs);
-static inline void ip_select_ident(struct sk_buff *skb, struct dst_entry *dst, struct sock *sk)
+static inline void ip_select_ident_segs(struct sk_buff *skb, struct sock *sk, int segs)
{
struct iphdr *iph = ip_hdr(skb);
@@ -276,24 +277,20 @@ static inline void ip_select_ident(struct sk_buff *skb, struct dst_entry *dst, s
* does not change, they drop every other packet in
* a TCP stream using header compression.
*/
- iph->id = (sk && inet_sk(sk)->inet_daddr) ?
- htons(inet_sk(sk)->inet_id++) : 0;
- } else
- __ip_select_ident(iph, dst, 0);
-}
-
-static inline void ip_select_ident_more(struct sk_buff *skb, struct dst_entry *dst, struct sock *sk, int more)
-{
- struct iphdr *iph = ip_hdr(skb);
-
- if ((iph->frag_off & htons(IP_DF)) && !skb->local_df) {
if (sk && inet_sk(sk)->inet_daddr) {
iph->id = htons(inet_sk(sk)->inet_id);
- inet_sk(sk)->inet_id += 1 + more;
- } else
+ inet_sk(sk)->inet_id += segs;
+ } else {
iph->id = 0;
- } else
- __ip_select_ident(iph, dst, more);
+ }
+ } else {
+ __ip_select_ident(iph, segs);
+ }
+}
+
+static inline void ip_select_ident(struct sk_buff *skb, struct sock *sk)
+{
+ ip_select_ident_segs(skb, sk, 1);
}
/*
diff --git a/include/net/ipip.h b/include/net/ipip.h
index 4dccfe3..e8ee3bb 100644
--- a/include/net/ipip.h
+++ b/include/net/ipip.h
@@ -50,7 +50,7 @@ struct ip_tunnel_prl_entry {
int pkt_len = skb->len - skb_transport_offset(skb); \
\
skb->ip_summed = CHECKSUM_NONE; \
- ip_select_ident(skb, &rt->dst, NULL); \
+ ip_select_ident(skb, NULL); \
\
err = ip_local_out(skb); \
if (likely(net_xmit_eval(err) == 0)) { \
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 0580673..00a2eb6 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -388,14 +388,19 @@ void ip6_frag_init(struct inet_frag_queue *q, void *a);
int ip6_frag_match(struct inet_frag_queue *q, void *a);
/* more secured version of ipv6_addr_hash() */
-static inline u32 ipv6_addr_jhash(const struct in6_addr *a)
+static inline u32 __ipv6_addr_jhash(const struct in6_addr *a, const u32 initval)
{
u32 v = (__force u32)a->s6_addr32[0] ^ (__force u32)a->s6_addr32[1];
return jhash_3words(v,
(__force u32)a->s6_addr32[2],
(__force u32)a->s6_addr32[3],
- ipv6_hash_secret);
+ initval);
+}
+
+static inline u32 ipv6_addr_jhash(const struct in6_addr *a)
+{
+ return __ipv6_addr_jhash(a, ipv6_hash_secret);
}
static inline int ipv6_addr_any(const struct in6_addr *a)
diff --git a/include/net/netlabel.h b/include/net/netlabel.h
index f674409..c8ba2e2 100644
--- a/include/net/netlabel.h
+++ b/include/net/netlabel.h
@@ -395,10 +395,10 @@ int netlbl_secattr_catmap_walk(struct netlbl_lsm_secattr_catmap *catmap,
u32 offset);
int netlbl_secattr_catmap_walk_rng(struct netlbl_lsm_secattr_catmap *catmap,
u32 offset);
-int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap *catmap,
+int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap **catmap,
u32 bit,
gfp_t flags);
-int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap *catmap,
+int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap **catmap,
u32 start,
u32 end,
gfp_t flags);
@@ -506,14 +506,14 @@ static inline int netlbl_secattr_catmap_walk_rng(
return -ENOENT;
}
static inline int netlbl_secattr_catmap_setbit(
- struct netlbl_lsm_secattr_catmap *catmap,
+ struct netlbl_lsm_secattr_catmap **catmap,
u32 bit,
gfp_t flags)
{
return 0;
}
static inline int netlbl_secattr_catmap_setrng(
- struct netlbl_lsm_secattr_catmap *catmap,
+ struct netlbl_lsm_secattr_catmap **catmap,
u32 start,
u32 end,
gfp_t flags)
diff --git a/include/net/secure_seq.h b/include/net/secure_seq.h
index c2e542b..b1c3d1c 100644
--- a/include/net/secure_seq.h
+++ b/include/net/secure_seq.h
@@ -3,8 +3,6 @@
#include <linux/types.h>
-extern __u32 secure_ip_id(__be32 daddr);
-extern __u32 secure_ipv6_id(const __be32 daddr[4]);
extern u32 secure_ipv4_port_ephemeral(__be32 saddr, __be32 daddr, __be16 dport);
extern u32 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr,
__be16 dport);
diff --git a/init/main.c b/init/main.c
index 7474450..e937d9b 100644
--- a/init/main.c
+++ b/init/main.c
@@ -610,6 +610,10 @@ asmlinkage void __init start_kernel(void)
if (efi_enabled(EFI_RUNTIME_SERVICES))
efi_enter_virtual_mode();
#endif
+#ifdef CONFIG_X86_ESPFIX64
+ /* Should be run before the first non-init thread is created */
+ init_espfix_bsp();
+#endif
thread_info_cache_init();
cred_init();
fork_init(totalram_pages);
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 648f25a..4babd77 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -2843,21 +2843,16 @@ static void rb_iter_reset(struct ring_buffer_iter *iter)
struct ring_buffer_per_cpu *cpu_buffer = iter->cpu_buffer;
/* Iterator usage is expected to have record disabled */
- if (list_empty(&cpu_buffer->reader_page->list)) {
- iter->head_page = rb_set_head_page(cpu_buffer);
- if (unlikely(!iter->head_page))
- return;
- iter->head = iter->head_page->read;
- } else {
- iter->head_page = cpu_buffer->reader_page;
- iter->head = cpu_buffer->reader_page->read;
- }
+ iter->head_page = cpu_buffer->reader_page;
+ iter->head = cpu_buffer->reader_page->read;
+
+ iter->cache_reader_page = iter->head_page;
+ iter->cache_read = iter->head;
+
if (iter->head)
iter->read_stamp = cpu_buffer->read_stamp;
else
iter->read_stamp = iter->head_page->page->time_stamp;
- iter->cache_reader_page = cpu_buffer->reader_page;
- iter->cache_read = cpu_buffer->read;
}
/**
@@ -3246,12 +3241,14 @@ rb_iter_peek(struct ring_buffer_iter *iter, u64 *ts)
return NULL;
/*
- * We repeat when a time extend is encountered.
- * Since the time extend is always attached to a data event,
- * we should never loop more than once.
- * (We never hit the following condition more than twice).
+ * We repeat when a time extend is encountered or we hit
+ * the end of the page. Since the time extend is always attached
+ * to a data event, we should never loop more than three times.
+ * Once for going to next page, once on time extend, and
+ * finally once to get the event.
+ * (We never hit the following condition more than thrice).
*/
- if (RB_WARN_ON(cpu_buffer, ++nr_loops > 2))
+ if (RB_WARN_ON(cpu_buffer, ++nr_loops > 3))
return NULL;
if (rb_per_cpu_empty(cpu_buffer))
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index c9f7e6f..a72fa33 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1601,8 +1601,14 @@ static unsigned interleave_nodes(struct mempolicy *policy)
* task can change it's policy. The system default policy requires no
* such protection.
*/
-unsigned slab_node(struct mempolicy *policy)
+unsigned slab_node(void)
{
+ struct mempolicy *policy;
+
+ if (in_interrupt())
+ return numa_node_id();
+
+ policy = current->mempolicy;
if (!policy || policy->flags & MPOL_F_LOCAL)
return numa_node_id();
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index d8762b2..62a7fa23 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2054,7 +2054,7 @@ static inline int
gfp_to_alloc_flags(gfp_t gfp_mask)
{
int alloc_flags = ALLOC_WMARK_MIN | ALLOC_CPUSET;
- const gfp_t wait = gfp_mask & __GFP_WAIT;
+ const bool atomic = !(gfp_mask & (__GFP_WAIT | __GFP_NO_KSWAPD));
/* __GFP_HIGH is assumed to be the same as ALLOC_HIGH to save a branch. */
BUILD_BUG_ON(__GFP_HIGH != (__force gfp_t) ALLOC_HIGH);
@@ -2063,20 +2063,20 @@ gfp_to_alloc_flags(gfp_t gfp_mask)
* The caller may dip into page reserves a bit more if the caller
* cannot run direct reclaim, or if the caller has realtime scheduling
* policy or is asking for __GFP_HIGH memory. GFP_ATOMIC requests will
- * set both ALLOC_HARDER (!wait) and ALLOC_HIGH (__GFP_HIGH).
+ * set both ALLOC_HARDER (atomic == true) and ALLOC_HIGH (__GFP_HIGH).
*/
alloc_flags |= (__force int) (gfp_mask & __GFP_HIGH);
- if (!wait) {
+ if (atomic) {
/*
- * Not worth trying to allocate harder for
- * __GFP_NOMEMALLOC even if it can't schedule.
+ * Not worth trying to allocate harder for __GFP_NOMEMALLOC even
+ * if it can't schedule.
*/
- if (!(gfp_mask & __GFP_NOMEMALLOC))
+ if (!(gfp_mask & __GFP_NOMEMALLOC))
alloc_flags |= ALLOC_HARDER;
/*
- * Ignore cpuset if GFP_ATOMIC (!wait) rather than fail alloc.
- * See also cpuset_zone_allowed() comment in kernel/cpuset.c.
+ * Ignore cpuset mems for GFP_ATOMIC rather than fail, see the
+ * comment for __cpuset_node_allowed_softwall().
*/
alloc_flags &= ~ALLOC_CPUSET;
} else if (unlikely(rt_task(current)) && !in_interrupt())
diff --git a/mm/slab.c b/mm/slab.c
index 4c3b671..aea5e42 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3270,7 +3270,7 @@ static void *alternate_node_alloc(struct kmem_cache *cachep, gfp_t flags)
if (cpuset_do_slab_mem_spread() && (cachep->flags & SLAB_MEM_SPREAD))
nid_alloc = cpuset_slab_spread_node();
else if (current->mempolicy)
- nid_alloc = slab_node(current->mempolicy);
+ nid_alloc = slab_node();
if (nid_alloc != nid_here)
return ____cache_alloc_node(cachep, flags, nid_alloc);
return NULL;
@@ -3302,7 +3302,7 @@ static void *fallback_alloc(struct kmem_cache *cache, gfp_t flags)
retry_cpuset:
cpuset_mems_cookie = get_mems_allowed();
- zonelist = node_zonelist(slab_node(current->mempolicy), flags);
+ zonelist = node_zonelist(slab_node(), flags);
retry:
/*
diff --git a/mm/slub.c b/mm/slub.c
index fc719f7..6a4c2fb 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1608,7 +1608,7 @@ static struct page *get_any_partial(struct kmem_cache *s, gfp_t flags,
do {
cpuset_mems_cookie = get_mems_allowed();
- zonelist = node_zonelist(slab_node(current->mempolicy), flags);
+ zonelist = node_zonelist(slab_node(), flags);
for_each_zone_zonelist(zone, z, zonelist, high_zoneidx) {
struct kmem_cache_node *n;
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 158887a..74e59cd 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -804,7 +804,8 @@ static int l2cap_sock_shutdown(struct socket *sock, int how)
sk->sk_shutdown = SHUTDOWN_MASK;
l2cap_chan_close(chan, 0);
- if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
+ if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
+ !(current->flags & PF_EXITING))
err = bt_sock_wait_state(sk, BT_CLOSED,
sk->sk_lingertime);
}
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index 14c4864..93a8241 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -901,7 +901,8 @@ static int rfcomm_sock_shutdown(struct socket *sock, int how)
sk->sk_shutdown = SHUTDOWN_MASK;
__rfcomm_sock_close(sk);
- if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
+ if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
+ !(current->flags & PF_EXITING))
err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
}
release_sock(sk);
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index a324b00..2e80aee7 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -774,7 +774,8 @@ static int sco_sock_shutdown(struct socket *sock, int how)
sco_sock_clear_timer(sk);
__sco_sock_close(sk);
- if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
+ if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
+ !(current->flags & PF_EXITING))
err = bt_sock_wait_state(sk, BT_CLOSED,
sk->sk_lingertime);
}
@@ -794,7 +795,8 @@ static int sco_sock_release(struct socket *sock)
sco_sock_close(sk);
- if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) {
+ if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
+ !(current->flags & PF_EXITING)) {
lock_sock(sk);
err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
release_sock(sk);
diff --git a/net/compat.c b/net/compat.c
index 41724c9..759e542 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -85,7 +85,7 @@ int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov,
{
int tot_len;
- if (kern_msg->msg_namelen) {
+ if (kern_msg->msg_name && kern_msg->msg_namelen) {
if (mode == VERIFY_READ) {
int err = move_addr_to_kernel(kern_msg->msg_name,
kern_msg->msg_namelen,
@@ -93,10 +93,11 @@ int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov,
if (err < 0)
return err;
}
- if (kern_msg->msg_name)
- kern_msg->msg_name = kern_address;
- } else
+ kern_msg->msg_name = kern_address;
+ } else {
kern_msg->msg_name = NULL;
+ kern_msg->msg_namelen = 0;
+ }
tot_len = iov_from_user_compat_to_kern(kern_iov,
(struct compat_iovec __user *)kern_msg->msg_iov,
diff --git a/net/core/iovec.c b/net/core/iovec.c
index 139ef93..66e3f1f 100644
--- a/net/core/iovec.c
+++ b/net/core/iovec.c
@@ -39,7 +39,7 @@ int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr *address,
{
int size, ct, err;
- if (m->msg_namelen) {
+ if (m->msg_name && m->msg_namelen) {
if (mode == VERIFY_READ) {
void __user *namep;
namep = (void __user __force *) m->msg_name;
@@ -48,10 +48,10 @@ int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr *address,
if (err < 0)
return err;
}
- if (m->msg_name)
- m->msg_name = address;
+ m->msg_name = address;
} else {
m->msg_name = NULL;
+ m->msg_namelen = 0;
}
size = m->msg_iovlen * sizeof(struct iovec);
@@ -157,6 +157,10 @@ EXPORT_SYMBOL(memcpy_fromiovec);
int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov,
int offset, int len)
{
+ /* No data? Done! */
+ if (len == 0)
+ return 0;
+
/* Skip over the finished iovecs */
while (offset >= iov->iov_len) {
offset -= iov->iov_len;
diff --git a/net/core/secure_seq.c b/net/core/secure_seq.c
index 925991a..fd53919 100644
--- a/net/core/secure_seq.c
+++ b/net/core/secure_seq.c
@@ -79,29 +79,6 @@ u32 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr,
#endif
#ifdef CONFIG_INET
-__u32 secure_ip_id(__be32 daddr)
-{
- u32 hash[MD5_DIGEST_WORDS];
-
- hash[0] = (__force __u32) daddr;
- hash[1] = net_secret[13];
- hash[2] = net_secret[14];
- hash[3] = net_secret[15];
-
- md5_transform(hash, net_secret);
-
- return hash[0];
-}
-
-__u32 secure_ipv6_id(const __be32 daddr[4])
-{
- __u32 hash[4];
-
- memcpy(hash, daddr, 16);
- md5_transform(hash, net_secret);
-
- return hash[0];
-}
__u32 secure_tcp_sequence_number(__be32 saddr, __be32 daddr,
__be16 sport, __be16 dport)
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 7121d9b..0ccfb53 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2669,7 +2669,6 @@ struct sk_buff *skb_segment(struct sk_buff *skb, u32 features)
tail = nskb;
__copy_skb_header(nskb, skb);
- nskb->mac_len = skb->mac_len;
/* nskb and skb might have different headroom */
if (nskb->ip_summed == CHECKSUM_PARTIAL)
@@ -2679,6 +2678,7 @@ struct sk_buff *skb_segment(struct sk_buff *skb, u32 features)
skb_set_network_header(nskb, skb->mac_len);
nskb->transport_header = (nskb->network_header +
skb_network_header_len(skb));
+ skb_reset_mac_len(nskb);
skb_copy_from_linear_data(skb, nskb->data, doffset);
if (fskb != skb_shinfo(skb)->frag_list)
diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
index afaa735..dbec8b5 100644
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -974,7 +974,7 @@ static int cipso_v4_map_cat_rbm_ntoh(const struct cipso_v4_doi *doi_def,
return -EPERM;
break;
}
- ret_val = netlbl_secattr_catmap_setbit(secattr->attr.mls.cat,
+ ret_val = netlbl_secattr_catmap_setbit(&secattr->attr.mls.cat,
host_spot,
GFP_ATOMIC);
if (ret_val != 0)
@@ -1076,7 +1076,7 @@ static int cipso_v4_map_cat_enum_ntoh(const struct cipso_v4_doi *doi_def,
u32 iter;
for (iter = 0; iter < net_cat_len; iter += 2) {
- ret_val = netlbl_secattr_catmap_setbit(secattr->attr.mls.cat,
+ ret_val = netlbl_secattr_catmap_setbit(&secattr->attr.mls.cat,
get_unaligned_be16(&net_cat[iter]),
GFP_ATOMIC);
if (ret_val != 0)
@@ -1218,7 +1218,7 @@ static int cipso_v4_map_cat_rng_ntoh(const struct cipso_v4_doi *doi_def,
else
cat_low = 0;
- ret_val = netlbl_secattr_catmap_setrng(secattr->attr.mls.cat,
+ ret_val = netlbl_secattr_catmap_setrng(&secattr->attr.mls.cat,
cat_low,
cat_high,
GFP_ATOMIC);
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 7f7e670..7fe66d9 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -342,7 +342,7 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size)
pip->saddr = fl4.saddr;
pip->protocol = IPPROTO_IGMP;
pip->tot_len = 0; /* filled in later */
- ip_select_ident(skb, &rt->dst, NULL);
+ ip_select_ident(skb, NULL);
((u8*)&pip[1])[0] = IPOPT_RA;
((u8*)&pip[1])[1] = 4;
((u8*)&pip[1])[2] = 0;
@@ -683,7 +683,7 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc,
iph->daddr = dst;
iph->saddr = fl4.saddr;
iph->protocol = IPPROTO_IGMP;
- ip_select_ident(skb, &rt->dst, NULL);
+ ip_select_ident(skb, NULL);
((u8*)&iph[1])[0] = IPOPT_RA;
((u8*)&iph[1])[1] = 4;
((u8*)&iph[1])[2] = 0;
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index 58c4e696..9d74cc7 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -26,20 +26,7 @@
* Theory of operations.
* We keep one entry for each peer IP address. The nodes contains long-living
* information about the peer which doesn't depend on routes.
- * At this moment this information consists only of ID field for the next
- * outgoing IP packet. This field is incremented with each packet as encoded
- * in inet_getid() function (include/net/inetpeer.h).
- * At the moment of writing this notes identifier of IP packets is generated
- * to be unpredictable using this code only for packets subjected
- * (actually or potentially) to defragmentation. I.e. DF packets less than
- * PMTU in size when local fragmentation is disabled use a constant ID and do
- * not use this code (see ip_select_ident() in include/net/ip.h).
*
- * Route cache entries hold references to our nodes.
- * New cache entries get references via lookup by destination IP address in
- * the avl tree. The reference is grabbed only when it's needed i.e. only
- * when we try to output IP packet which needs an unpredictable ID (see
- * __ip_select_ident() in net/ipv4/route.c).
* Nodes are removed only when reference counter goes to 0.
* When it's happened the node may be removed when a sufficient amount of
* time has been passed since its last use. The less-recently-used entry can
@@ -62,7 +49,6 @@
* refcnt: atomically against modifications on other CPU;
* usually under some other lock to prevent node disappearing
* daddr: unchangeable
- * ip_id_count: atomic value (no lock needed)
*/
static struct kmem_cache *peer_cachep __read_mostly;
@@ -488,10 +474,6 @@ relookup:
p->daddr = *daddr;
atomic_set(&p->refcnt, 1);
atomic_set(&p->rid, 0);
- atomic_set(&p->ip_id_count,
- (daddr->family == AF_INET) ?
- secure_ip_id(daddr->addr.a4) :
- secure_ipv6_id(daddr->addr.a6));
p->tcp_ts_stamp = 0;
p->metrics[RTAX_LOCK-1] = INETPEER_METRICS_NEW;
p->rate_tokens = 0;
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 16191f0..223085f 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -162,7 +162,7 @@ int ip_build_and_send_pkt(struct sk_buff *skb, struct sock *sk,
iph->daddr = (opt && opt->opt.srr ? opt->opt.faddr : daddr);
iph->saddr = saddr;
iph->protocol = sk->sk_protocol;
- ip_select_ident(skb, &rt->dst, sk);
+ ip_select_ident(skb, sk);
if (opt && opt->opt.optlen) {
iph->ihl += opt->opt.optlen>>2;
@@ -390,8 +390,7 @@ packet_routed:
ip_options_build(skb, &inet_opt->opt, inet->inet_daddr, rt, 0);
}
- ip_select_ident_more(skb, &rt->dst, sk,
- (skb_shinfo(skb)->gso_segs ?: 1) - 1);
+ ip_select_ident_segs(skb, sk, skb_shinfo(skb)->gso_segs ?: 1);
skb->priority = sk->sk_priority;
skb->mark = sk->sk_mark;
@@ -1334,7 +1333,7 @@ struct sk_buff *__ip_make_skb(struct sock *sk,
iph->ihl = 5;
iph->tos = inet->tos;
iph->frag_off = df;
- ip_select_ident(skb, &rt->dst, sk);
+ ip_select_ident(skb, sk);
iph->ttl = ttl;
iph->protocol = sk->sk_protocol;
iph->saddr = fl4->saddr;
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 140d377..7993d16 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -1579,7 +1579,7 @@ static void ip_encap(struct sk_buff *skb, __be32 saddr, __be32 daddr)
iph->protocol = IPPROTO_IPIP;
iph->ihl = 5;
iph->tot_len = htons(skb->len);
- ip_select_ident(skb, skb_dst(skb), NULL);
+ ip_select_ident(skb, NULL);
ip_send_check(iph);
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index cfded93..75fea1f 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -380,7 +380,7 @@ static int raw_send_hdrinc(struct sock *sk, struct flowi4 *fl4,
iph->check = 0;
iph->tot_len = htons(length);
if (!iph->id)
- ip_select_ident(skb, &rt->dst, NULL);
+ ip_select_ident(skb, NULL);
iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
}
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 6526110..d361dc0 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1344,46 +1344,53 @@ void rt_bind_peer(struct rtable *rt, __be32 daddr, int create)
rt->rt_peer_genid = rt_peer_genid();
}
-/*
- * Peer allocation may fail only in serious out-of-memory conditions. However
- * we still can generate some output.
- * Random ID selection looks a bit dangerous because we have no chances to
- * select ID being unique in a reasonable period of time.
- * But broken packet identifier may be better than no packet at all.
+#define IP_IDENTS_SZ 2048u
+struct ip_ident_bucket {
+ atomic_t id;
+ u32 stamp32;
+};
+
+static struct ip_ident_bucket *ip_idents __read_mostly;
+
+/* In order to protect privacy, we add a perturbation to identifiers
+ * if one generator is seldom used. This makes hard for an attacker
+ * to infer how many packets were sent between two points in time.
*/
-static void ip_select_fb_ident(struct iphdr *iph)
+u32 ip_idents_reserve(u32 hash, int segs)
{
- static DEFINE_SPINLOCK(ip_fb_id_lock);
- static u32 ip_fallback_id;
- u32 salt;
+ struct ip_ident_bucket *bucket = ip_idents + hash % IP_IDENTS_SZ;
+ u32 old = ACCESS_ONCE(bucket->stamp32);
+ u32 now = (u32)jiffies;
+ u32 delta = 0;
+
+ if (old != now && cmpxchg(&bucket->stamp32, old, now) == old) {
+ u64 x = random32();
+
+ x *= (now - old);
+ delta = (u32)(x >> 32);
+ }
- spin_lock_bh(&ip_fb_id_lock);
- salt = secure_ip_id((__force __be32)ip_fallback_id ^ iph->daddr);
- iph->id = htons(salt & 0xFFFF);
- ip_fallback_id = salt;
- spin_unlock_bh(&ip_fb_id_lock);
+ return atomic_add_return(segs + delta, &bucket->id) - segs;
}
+EXPORT_SYMBOL(ip_idents_reserve);
-void __ip_select_ident(struct iphdr *iph, struct dst_entry *dst, int more)
+void __ip_select_ident(struct iphdr *iph, int segs)
{
- struct rtable *rt = (struct rtable *) dst;
-
- if (rt && !(rt->dst.flags & DST_NOPEER)) {
- if (rt->peer == NULL)
- rt_bind_peer(rt, rt->rt_dst, 1);
+ static u32 ip_idents_hashrnd __read_mostly;
+ static bool hashrnd_initialized = false;
+ u32 hash, id;
- /* If peer is attached to destination, it is never detached,
- so that we need not to grab a lock to dereference it.
- */
- if (rt->peer) {
- iph->id = htons(inet_getid(rt->peer, more));
- return;
- }
- } else if (!rt)
- printk(KERN_DEBUG "rt_bind_peer(0) @%p\n",
- __builtin_return_address(0));
+ if (unlikely(!hashrnd_initialized)) {
+ hashrnd_initialized = true;
+ get_random_bytes(&ip_idents_hashrnd, sizeof(ip_idents_hashrnd));
+ }
- ip_select_fb_ident(iph);
+ hash = jhash_3words((__force u32)iph->daddr,
+ (__force u32)iph->saddr,
+ iph->protocol,
+ ip_idents_hashrnd);
+ id = ip_idents_reserve(hash, segs);
+ iph->id = htons(id);
}
EXPORT_SYMBOL(__ip_select_ident);
@@ -3023,7 +3030,6 @@ static int rt_fill_info(struct net *net,
error = rt->dst.error;
if (peer) {
inet_peer_refcheck(rt->peer);
- id = atomic_read(&peer->ip_id_count) & 0xffff;
if (peer->tcp_ts_stamp) {
ts = peer->tcp_ts;
tsage = get_seconds() - peer->tcp_ts_stamp;
@@ -3455,6 +3461,12 @@ int __init ip_rt_init(void)
{
int rc = 0;
+ ip_idents = kmalloc(IP_IDENTS_SZ * sizeof(*ip_idents), GFP_KERNEL);
+ if (!ip_idents)
+ panic("IP: failed to allocate ip_idents\n");
+
+ get_random_bytes(ip_idents, IP_IDENTS_SZ * sizeof(*ip_idents));
+
#ifdef CONFIG_IP_ROUTE_CLASSID
ip_rt_acct = __alloc_percpu(256 * sizeof(struct ip_rt_acct), __alignof__(struct ip_rt_acct));
if (!ip_rt_acct)
diff --git a/net/ipv4/tcp_vegas.c b/net/ipv4/tcp_vegas.c
index 80fa2bf..c042e52 100644
--- a/net/ipv4/tcp_vegas.c
+++ b/net/ipv4/tcp_vegas.c
@@ -218,7 +218,8 @@ static void tcp_vegas_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
* This is:
* (actual rate in segments) * baseRTT
*/
- target_cwnd = tp->snd_cwnd * vegas->baseRTT / rtt;
+ target_cwnd = (u64)tp->snd_cwnd * vegas->baseRTT;
+ do_div(target_cwnd, rtt);
/* Calculate the difference between the window we had,
* and the window we would like to have. This quantity
diff --git a/net/ipv4/tcp_veno.c b/net/ipv4/tcp_veno.c
index ac43cd7..b4d1858 100644
--- a/net/ipv4/tcp_veno.c
+++ b/net/ipv4/tcp_veno.c
@@ -144,7 +144,7 @@ static void tcp_veno_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
rtt = veno->minrtt;
- target_cwnd = (tp->snd_cwnd * veno->basertt);
+ target_cwnd = (u64)tp->snd_cwnd * veno->basertt;
target_cwnd <<= V_PARAM_SHIFT;
do_div(target_cwnd, rtt);
diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c
index 938553e..5531eb2 100644
--- a/net/ipv4/xfrm4_mode_tunnel.c
+++ b/net/ipv4/xfrm4_mode_tunnel.c
@@ -54,12 +54,12 @@ static int xfrm4_mode_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
top_iph->frag_off = (flags & XFRM_STATE_NOPMTUDISC) ?
0 : (XFRM_MODE_SKB_CB(skb)->frag_off & htons(IP_DF));
- ip_select_ident(skb, dst->child, NULL);
top_iph->ttl = ip4_dst_hoplimit(dst->child);
top_iph->saddr = x->props.saddr.a4;
top_iph->daddr = x->id.daddr.a4;
+ ip_select_ident(skb, NULL);
return 0;
}
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 064b5c9..46fc6a3 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -600,22 +600,19 @@ int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt)
{
- static atomic_t ipv6_fragmentation_id;
- int ident;
+ static u32 ip6_idents_hashrnd __read_mostly;
+ static bool hashrnd_initialized = false;
+ u32 hash, id;
- if (rt && !(rt->dst.flags & DST_NOPEER)) {
- struct inet_peer *peer;
-
- if (!rt->rt6i_peer)
- rt6_bind_peer(rt, 1);
- peer = rt->rt6i_peer;
- if (peer) {
- fhdr->identification = htonl(inet_getid(peer, 0));
- return;
- }
+ if (unlikely(!hashrnd_initialized)) {
+ hashrnd_initialized = true;
+ get_random_bytes(&ip6_idents_hashrnd, sizeof(ip6_idents_hashrnd));
}
- ident = atomic_inc_return(&ipv6_fragmentation_id);
- fhdr->identification = htonl(ident);
+ hash = __ipv6_addr_jhash(&rt->rt6i_dst.addr, ip6_idents_hashrnd);
+ hash = __ipv6_addr_jhash(&rt->rt6i_src.addr, hash);
+
+ id = ip_idents_reserve(hash, 1);
+ fhdr->identification = htonl(id);
}
int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index 38c0813..cc8f8b4 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -853,7 +853,7 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
iph->daddr = cp->daddr.ip;
iph->saddr = saddr;
iph->ttl = old_iph->ttl;
- ip_select_ident(skb, &rt->dst, NULL);
+ ip_select_ident(skb, NULL);
/* Another hack: avoid icmp_send in ip_fragment */
skb->local_df = 1;
diff --git a/net/netlabel/netlabel_kapi.c b/net/netlabel/netlabel_kapi.c
index 824f184..bcecae0 100644
--- a/net/netlabel/netlabel_kapi.c
+++ b/net/netlabel/netlabel_kapi.c
@@ -523,7 +523,7 @@ int netlbl_secattr_catmap_walk_rng(struct netlbl_lsm_secattr_catmap *catmap,
/**
* netlbl_secattr_catmap_setbit - Set a bit in a LSM secattr catmap
- * @catmap: the category bitmap
+ * @catmap: pointer to the category bitmap
* @bit: the bit to set
* @flags: memory allocation flags
*
@@ -532,18 +532,25 @@ int netlbl_secattr_catmap_walk_rng(struct netlbl_lsm_secattr_catmap *catmap,
* negative values on failure.
*
*/
-int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap *catmap,
+int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap **catmap,
u32 bit,
gfp_t flags)
{
- struct netlbl_lsm_secattr_catmap *iter = catmap;
+ struct netlbl_lsm_secattr_catmap *iter = *catmap;
u32 node_bit;
u32 node_idx;
while (iter->next != NULL &&
bit >= (iter->startbit + NETLBL_CATMAP_SIZE))
iter = iter->next;
- if (bit >= (iter->startbit + NETLBL_CATMAP_SIZE)) {
+ if (bit < iter->startbit) {
+ iter = netlbl_secattr_catmap_alloc(flags);
+ if (iter == NULL)
+ return -ENOMEM;
+ iter->next = *catmap;
+ iter->startbit = bit & ~(NETLBL_CATMAP_SIZE - 1);
+ *catmap = iter;
+ } else if (bit >= (iter->startbit + NETLBL_CATMAP_SIZE)) {
iter->next = netlbl_secattr_catmap_alloc(flags);
if (iter->next == NULL)
return -ENOMEM;
@@ -561,7 +568,7 @@ int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap *catmap,
/**
* netlbl_secattr_catmap_setrng - Set a range of bits in a LSM secattr catmap
- * @catmap: the category bitmap
+ * @catmap: pointer to the category bitmap
* @start: the starting bit
* @end: the last bit in the string
* @flags: memory allocation flags
@@ -571,15 +578,16 @@ int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap *catmap,
* on success, negative values on failure.
*
*/
-int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap *catmap,
+int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap **catmap,
u32 start,
u32 end,
gfp_t flags)
{
int ret_val = 0;
- struct netlbl_lsm_secattr_catmap *iter = catmap;
+ struct netlbl_lsm_secattr_catmap *iter = *catmap;
u32 iter_max_spot;
u32 spot;
+ u32 orig_spot = iter->startbit;
/* XXX - This could probably be made a bit faster by combining writes
* to the catmap instead of setting a single bit each time, but for
@@ -597,7 +605,9 @@ int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap *catmap,
iter = iter->next;
iter_max_spot = iter->startbit + NETLBL_CATMAP_SIZE;
}
- ret_val = netlbl_secattr_catmap_setbit(iter, spot, GFP_ATOMIC);
+ ret_val = netlbl_secattr_catmap_setbit(&iter, spot, flags);
+ if (iter->startbit < orig_spot)
+ *catmap = iter;
}
return ret_val;
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 25b207b..da54d29 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -1188,6 +1188,7 @@ void sctp_assoc_update(struct sctp_association *asoc,
asoc->c = new->c;
asoc->peer.rwnd = new->peer.rwnd;
asoc->peer.sack_needed = new->peer.sack_needed;
+ asoc->peer.auth_capable = new->peer.auth_capable;
asoc->peer.i = new->peer.i;
sctp_tsnmap_init(&asoc->peer.tsn_map, SCTP_TSN_MAP_INITIAL,
asoc->peer.i.initial_tsn, GFP_ATOMIC);
diff --git a/net/sctp/output.c b/net/sctp/output.c
index cf3e22c..5bd9aa9 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -587,7 +587,7 @@ out:
return err;
no_route:
kfree_skb(nskb);
- IP_INC_STATS_BH(&init_net, IPSTATS_MIB_OUTNOROUTES);
+ IP_INC_STATS(&init_net, IPSTATS_MIB_OUTNOROUTES);
/* FIXME: Returning the 'err' will effect all the associations
* associated with a socket, although only one of the paths of the
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 7db62b4..e3adb49 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -1842,7 +1842,7 @@ static void smack_set_catset(char *catset, struct netlbl_lsm_secattr *sap)
for (m = 0x80; m != 0; m >>= 1, cat++) {
if ((m & *cp) == 0)
continue;
- rc = netlbl_secattr_catmap_setbit(sap->attr.mls.cat,
+ rc = netlbl_secattr_catmap_setbit(&sap->attr.mls.cat,
cat, GFP_ATOMIC);
}
}
diff --git a/sound/pci/Kconfig b/sound/pci/Kconfig
index e7244ac..e2e4829 100644
--- a/sound/pci/Kconfig
+++ b/sound/pci/Kconfig
@@ -852,8 +852,8 @@ config SND_VIRTUOSO
select SND_JACK if INPUT=y || INPUT=SND
help
Say Y here to include support for sound cards based on the
- Asus AV66/AV100/AV200 chips, i.e., Xonar D1, DX, D2, D2X, DS,
- Essence ST (Deluxe), and Essence STX.
+ Asus AV66/AV100/AV200 chips, i.e., Xonar D1, DX, D2, D2X, DS, DSX,
+ Essence ST (Deluxe), and Essence STX (II).
Support for the HDAV1.3 (Deluxe) and HDAV1.3 Slim is experimental;
for the Xense, missing.
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 400168e..491cdf0 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -436,6 +436,8 @@ static void alc_fix_pll(struct hda_codec *codec)
spec->pll_coef_idx);
val = snd_hda_codec_read(codec, spec->pll_nid, 0,
AC_VERB_GET_PROC_COEF, 0);
+ if (val == -1)
+ return;
snd_hda_codec_write(codec, spec->pll_nid, 0, AC_VERB_SET_COEF_INDEX,
spec->pll_coef_idx);
snd_hda_codec_write(codec, spec->pll_nid, 0, AC_VERB_SET_PROC_COEF,
@@ -4773,6 +4775,8 @@ static int alc269_parse_auto_config(struct hda_codec *codec)
static void alc269_toggle_power_output(struct hda_codec *codec, int power_up)
{
int val = alc_read_coef_idx(codec, 0x04);
+ if (val == -1)
+ return;
if (power_up)
val |= 1 << 11;
else
@@ -5184,27 +5188,30 @@ static int alc269_fill_coef(struct hda_codec *codec)
if ((alc_get_coef0(codec) & 0x00ff) == 0x017) {
val = alc_read_coef_idx(codec, 0x04);
/* Power up output pin */
- alc_write_coef_idx(codec, 0x04, val | (1<<11));
+ if (val != -1)
+ alc_write_coef_idx(codec, 0x04, val | (1<<11));
}
if ((alc_get_coef0(codec) & 0x00ff) == 0x018) {
val = alc_read_coef_idx(codec, 0xd);
- if ((val & 0x0c00) >> 10 != 0x1) {
+ if (val != -1 && (val & 0x0c00) >> 10 != 0x1) {
/* Capless ramp up clock control */
alc_write_coef_idx(codec, 0xd, val | (1<<10));
}
val = alc_read_coef_idx(codec, 0x17);
- if ((val & 0x01c0) >> 6 != 0x4) {
+ if (val != -1 && (val & 0x01c0) >> 6 != 0x4) {
/* Class D power on reset */
alc_write_coef_idx(codec, 0x17, val | (1<<7));
}
}
val = alc_read_coef_idx(codec, 0xd); /* Class D */
- alc_write_coef_idx(codec, 0xd, val | (1<<14));
+ if (val != -1)
+ alc_write_coef_idx(codec, 0xd, val | (1<<14));
val = alc_read_coef_idx(codec, 0x4); /* HP */
- alc_write_coef_idx(codec, 0x4, val | (1<<11));
+ if (val != -1)
+ alc_write_coef_idx(codec, 0x4, val | (1<<11));
return 0;
}
diff --git a/sound/pci/oxygen/virtuoso.c b/sound/pci/oxygen/virtuoso.c
index 4149a0c..7edd5e4 100644
--- a/sound/pci/oxygen/virtuoso.c
+++ b/sound/pci/oxygen/virtuoso.c
@@ -52,6 +52,8 @@ static DEFINE_PCI_DEVICE_TABLE(xonar_ids) = {
{ OXYGEN_PCI_SUBID(0x1043, 0x835d) },
{ OXYGEN_PCI_SUBID(0x1043, 0x835e) },
{ OXYGEN_PCI_SUBID(0x1043, 0x838e) },
+ { OXYGEN_PCI_SUBID(0x1043, 0x8522) },
+ { OXYGEN_PCI_SUBID(0x1043, 0x85f4) },
{ OXYGEN_PCI_SUBID_BROKEN_EEPROM },
{ }
};
diff --git a/sound/pci/oxygen/xonar_pcm179x.c b/sound/pci/oxygen/xonar_pcm179x.c
index 8433aa7..4cac06a 100644
--- a/sound/pci/oxygen/xonar_pcm179x.c
+++ b/sound/pci/oxygen/xonar_pcm179x.c
@@ -100,8 +100,8 @@
*/
/*
- * Xonar Essence ST (Deluxe)/STX
- * -----------------------------
+ * Xonar Essence ST (Deluxe)/STX (II)
+ * ----------------------------------
*
* CMI8788:
*
@@ -1138,6 +1138,14 @@ int __devinit get_xonar_pcm179x_model(struct oxygen *chip,
chip->model.resume = xonar_stx_resume;
chip->model.set_dac_params = set_pcm1796_params;
break;
+ case 0x85f4:
+ chip->model = model_xonar_st;
+ /* TODO: daughterboard support */
+ chip->model.shortname = "Xonar STX II";
+ chip->model.init = xonar_stx_init;
+ chip->model.resume = xonar_stx_resume;
+ chip->model.set_dac_params = set_pcm1796_params;
+ break;
default:
return -EINVAL;
}
diff --git a/sound/pci/oxygen/xonar_wm87x6.c b/sound/pci/oxygen/xonar_wm87x6.c
index 915546a..30495b8 100644
--- a/sound/pci/oxygen/xonar_wm87x6.c
+++ b/sound/pci/oxygen/xonar_wm87x6.c
@@ -1255,7 +1255,6 @@ static void dump_wm87x6_registers(struct oxygen *chip,
}
static const struct oxygen_model model_xonar_ds = {
- .shortname = "Xonar DS",
.longname = "Asus Virtuoso 66",
.chip = "AV200",
.init = xonar_ds_init,
@@ -1325,6 +1324,11 @@ int __devinit get_xonar_wm87x6_model(struct oxygen *chip,
switch (id->subdevice) {
case 0x838e:
chip->model = model_xonar_ds;
+ chip->model.shortname = "Xonar DS";
+ break;
+ case 0x8522:
+ chip->model = model_xonar_ds;
+ chip->model.shortname = "Xonar DSX";
break;
case 0x835e:
chip->model = model_xonar_hdav_slim;
diff --git a/sound/soc/pxa/pxa-ssp.c b/sound/soc/pxa/pxa-ssp.c
index b583e60..72886e3 100644
--- a/sound/soc/pxa/pxa-ssp.c
+++ b/sound/soc/pxa/pxa-ssp.c
@@ -778,9 +778,7 @@ static int pxa_ssp_remove(struct snd_soc_dai *dai)
SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \
SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
-#define PXA_SSP_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
- SNDRV_PCM_FMTBIT_S24_LE | \
- SNDRV_PCM_FMTBIT_S32_LE)
+#define PXA_SSP_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE)
static struct snd_soc_dai_ops pxa_ssp_dai_ops = {
.startup = pxa_ssp_startup,
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index bff42bf..ad22bd9 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -824,11 +824,9 @@ static int i2s_suspend(struct snd_soc_dai *dai)
{
struct i2s_dai *i2s = to_info(dai);
- if (dai->active) {
- i2s->suspend_i2smod = readl(i2s->addr + I2SMOD);
- i2s->suspend_i2scon = readl(i2s->addr + I2SCON);
- i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR);
- }
+ i2s->suspend_i2smod = readl(i2s->addr + I2SMOD);
+ i2s->suspend_i2scon = readl(i2s->addr + I2SCON);
+ i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR);
return 0;
}
@@ -837,11 +835,9 @@ static int i2s_resume(struct snd_soc_dai *dai)
{
struct i2s_dai *i2s = to_info(dai);
- if (dai->active) {
- writel(i2s->suspend_i2scon, i2s->addr + I2SCON);
- writel(i2s->suspend_i2smod, i2s->addr + I2SMOD);
- writel(i2s->suspend_i2spsr, i2s->addr + I2SPSR);
- }
+ writel(i2s->suspend_i2scon, i2s->addr + I2SCON);
+ writel(i2s->suspend_i2smod, i2s->addr + I2SMOD);
+ writel(i2s->suspend_i2spsr, i2s->addr + I2SPSR);
return 0;
}
diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c
index 5dbb35d..c946700 100644
--- a/virt/kvm/iommu.c
+++ b/virt/kvm/iommu.c
@@ -61,6 +61,14 @@ static pfn_t kvm_pin_pages(struct kvm *kvm, struct kvm_memory_slot *slot,
return pfn;
}
+static void kvm_unpin_pages(struct kvm *kvm, pfn_t pfn, unsigned long npages)
+{
+ unsigned long i;
+
+ for (i = 0; i < npages; ++i)
+ kvm_release_pfn_clean(pfn + i);
+}
+
int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot)
{
gfn_t gfn, end_gfn;
@@ -121,6 +129,7 @@ int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot)
if (r) {
printk(KERN_ERR "kvm_iommu_map_address:"
"iommu failed to map pfn=%llx\n", pfn);
+ kvm_unpin_pages(kvm, pfn, page_size);
goto unmap_pages;
}
@@ -132,7 +141,7 @@ int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot)
return 0;
unmap_pages:
- kvm_iommu_put_pages(kvm, slot->base_gfn, gfn);
+ kvm_iommu_put_pages(kvm, slot->base_gfn, gfn - slot->base_gfn);
return r;
}
@@ -273,14 +282,6 @@ out_unlock:
return r;
}
-static void kvm_unpin_pages(struct kvm *kvm, pfn_t pfn, unsigned long npages)
-{
- unsigned long i;
-
- for (i = 0; i < npages; ++i)
- kvm_release_pfn_clean(pfn + i);
-}
-
static void kvm_iommu_put_pages(struct kvm *kvm,
gfn_t base_gfn, unsigned long npages)
{
[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 811 bytes --]
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