* [PATCH 3.19.y-ckt 001/130] md: use kzalloc() when bitmap is disabled
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
@ 2015-08-27 22:09 ` Kamal Mostafa
2015-08-27 22:09 ` [PATCH 3.19.y-ckt 002/130] regulator: s2mps11: Fix GPIO suspend enable shift wrapping bug Kamal Mostafa
` (128 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:09 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Benjamin Randazzo, NeilBrown, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Benjamin Randazzo <benjamin@randazzo.fr>
commit b6878d9e03043695dbf3fa1caa6dfc09db225b16 upstream.
In drivers/md/md.c get_bitmap_file() uses kmalloc() for creating a
mdu_bitmap_file_t called "file".
5769 file = kmalloc(sizeof(*file), GFP_NOIO);
5770 if (!file)
5771 return -ENOMEM;
This structure is copied to user space at the end of the function.
5786 if (err == 0 &&
5787 copy_to_user(arg, file, sizeof(*file)))
5788 err = -EFAULT
But if bitmap is disabled only the first byte of "file" is initialized
with zero, so it's possible to read some bytes (up to 4095) of kernel
space memory from user space. This is an information leak.
5775 /* bitmap disabled, zero the first byte and copy out */
5776 if (!mddev->bitmap_info.file)
5777 file->pathname[0] = '\0';
Signed-off-by: Benjamin Randazzo <benjamin@randazzo.fr>
Signed-off-by: NeilBrown <neilb@suse.com>
Reference: CVE-2015-5697
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/md/md.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 193feb9..a31e15b 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5443,7 +5443,7 @@ static int get_bitmap_file(struct mddev *mddev, void __user * arg)
char *ptr, *buf = NULL;
int err = -ENOMEM;
- file = kmalloc(sizeof(*file), GFP_NOIO);
+ file = kzalloc(sizeof(*file), GFP_NOIO);
if (!file)
goto out;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 002/130] regulator: s2mps11: Fix GPIO suspend enable shift wrapping bug
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
2015-08-27 22:09 ` [PATCH 3.19.y-ckt 001/130] md: use kzalloc() when bitmap is disabled Kamal Mostafa
@ 2015-08-27 22:09 ` Kamal Mostafa
2015-08-27 22:09 ` [PATCH 3.19.y-ckt 003/130] iwlwifi: mvm: fix antenna selection when BT is active Kamal Mostafa
` (127 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:09 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Krzysztof Kozlowski, Mark Brown, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Krzysztof Kozlowski <k.kozlowski@samsung.com>
commit 32c848e33ace75fce388cceff76223d12b46eaa3 upstream.
Status of enabling suspend mode for regulator was stored in bitmap-like
long integer.
However since adding support for S2MPU02 the number of regulators
exceeded 32 so on devices with more than 32 regulators (S2MPU02 and
S2MPS13) overflow happens when shifting the bit. This could lead to
enabling suspend mode for completely different regulator than intended
or to switching different regulator to other mode (e.g. from always
enabled to controlled by PWRHOLD pin). Both cases could result in larger
energy usage and issues when suspending to RAM.
Fixes: 00e2573d2c10 ("regulator: s2mps11: Add support S2MPU02 regulator device")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/regulator/s2mps11.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c
index ff82811..8de1351 100644
--- a/drivers/regulator/s2mps11.c
+++ b/drivers/regulator/s2mps11.c
@@ -34,6 +34,8 @@
#include <linux/mfd/samsung/s2mps14.h>
#include <linux/mfd/samsung/s2mpu02.h>
+/* The highest number of possible regulators for supported devices. */
+#define S2MPS_REGULATOR_MAX S2MPS13_REGULATOR_MAX
struct s2mps11_info {
unsigned int rdev_num;
int ramp_delay2;
@@ -49,7 +51,7 @@ struct s2mps11_info {
* One bit for each S2MPS13/S2MPS14/S2MPU02 regulator whether
* the suspend mode was enabled.
*/
- unsigned long long s2mps14_suspend_state:50;
+ DECLARE_BITMAP(suspend_state, S2MPS_REGULATOR_MAX);
/* Array of size rdev_num with GPIO-s for external sleep control */
int *ext_control_gpio;
@@ -500,7 +502,7 @@ static int s2mps14_regulator_enable(struct regulator_dev *rdev)
switch (s2mps11->dev_type) {
case S2MPS13X:
case S2MPS14X:
- if (s2mps11->s2mps14_suspend_state & (1 << rdev_get_id(rdev)))
+ if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
val = S2MPS14_ENABLE_SUSPEND;
else if (gpio_is_valid(s2mps11->ext_control_gpio[rdev_get_id(rdev)]))
val = S2MPS14_ENABLE_EXT_CONTROL;
@@ -508,7 +510,7 @@ static int s2mps14_regulator_enable(struct regulator_dev *rdev)
val = rdev->desc->enable_mask;
break;
case S2MPU02:
- if (s2mps11->s2mps14_suspend_state & (1 << rdev_get_id(rdev)))
+ if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
val = S2MPU02_ENABLE_SUSPEND;
else
val = rdev->desc->enable_mask;
@@ -562,7 +564,7 @@ static int s2mps14_regulator_set_suspend_disable(struct regulator_dev *rdev)
if (ret < 0)
return ret;
- s2mps11->s2mps14_suspend_state |= (1 << rdev_get_id(rdev));
+ set_bit(rdev_get_id(rdev), s2mps11->suspend_state);
/*
* Don't enable suspend mode if regulator is already disabled because
* this would effectively for a short time turn on the regulator after
@@ -960,18 +962,22 @@ static int s2mps11_pmic_probe(struct platform_device *pdev)
case S2MPS11X:
s2mps11->rdev_num = ARRAY_SIZE(s2mps11_regulators);
regulators = s2mps11_regulators;
+ BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
break;
case S2MPS13X:
s2mps11->rdev_num = ARRAY_SIZE(s2mps13_regulators);
regulators = s2mps13_regulators;
+ BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
break;
case S2MPS14X:
s2mps11->rdev_num = ARRAY_SIZE(s2mps14_regulators);
regulators = s2mps14_regulators;
+ BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
break;
case S2MPU02:
s2mps11->rdev_num = ARRAY_SIZE(s2mpu02_regulators);
regulators = s2mpu02_regulators;
+ BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
break;
default:
dev_err(&pdev->dev, "Invalid device type: %u\n",
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 003/130] iwlwifi: mvm: fix antenna selection when BT is active
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
2015-08-27 22:09 ` [PATCH 3.19.y-ckt 001/130] md: use kzalloc() when bitmap is disabled Kamal Mostafa
2015-08-27 22:09 ` [PATCH 3.19.y-ckt 002/130] regulator: s2mps11: Fix GPIO suspend enable shift wrapping bug Kamal Mostafa
@ 2015-08-27 22:09 ` Kamal Mostafa
2015-08-27 22:09 ` [PATCH 3.19.y-ckt 004/130] HID: cp2112: fix to force single data-report reply Kamal Mostafa
` (126 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:09 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Emmanuel Grumbach, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
commit 923a8c1d8069104726bde55c37cec66324ccc328 upstream.
When BT is active, we want to avoid the shared antenna for
management frame to make sure we don't disturb BT. There
was a bug in that code because it chose the antenna
BIT(ANT_A) where ANT_A is already a bitmap (0x1). This
means that the antenna chosen in the end was ANT_B.
While this is not optimal on devices with 2 antennas (it'd
disturb BT), it is critical on single antenna devices like
3160 which couldn't connect at all when BT was active.
This fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=97181
Fixes: 34c8b24ff284 ("iwlwifi: mvm: BT Coex - avoid the shared antenna for management frames")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/net/wireless/iwlwifi/mvm/tx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/iwlwifi/mvm/tx.c b/drivers/net/wireless/iwlwifi/mvm/tx.c
index 650a5f0..ac12bc5 100644
--- a/drivers/net/wireless/iwlwifi/mvm/tx.c
+++ b/drivers/net/wireless/iwlwifi/mvm/tx.c
@@ -225,7 +225,7 @@ void iwl_mvm_set_tx_cmd_rate(struct iwl_mvm *mvm, struct iwl_tx_cmd *tx_cmd,
if (info->band == IEEE80211_BAND_2GHZ &&
!iwl_mvm_bt_coex_is_shared_ant_avail(mvm))
- rate_flags = BIT(mvm->cfg->non_shared_ant) << RATE_MCS_ANT_POS;
+ rate_flags = mvm->cfg->non_shared_ant << RATE_MCS_ANT_POS;
else
rate_flags =
BIT(mvm->mgmt_last_antenna_idx) << RATE_MCS_ANT_POS;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 004/130] HID: cp2112: fix to force single data-report reply
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (2 preceding siblings ...)
2015-08-27 22:09 ` [PATCH 3.19.y-ckt 003/130] iwlwifi: mvm: fix antenna selection when BT is active Kamal Mostafa
@ 2015-08-27 22:09 ` Kamal Mostafa
2015-08-27 22:09 ` [PATCH 3.19.y-ckt 005/130] ata: pmp: add quirk for Marvell 4140 SATA PMP Kamal Mostafa
` (125 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:09 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Antonio Borneo, Jiri Kosina, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Antonio Borneo <borneo.antonio@gmail.com>
commit 6debce6f4e787a8eb4cec94e7afa85fb4f40db27 upstream.
Current implementation of cp2112_raw_event() only accepts one data report at a
time. If last received data report is not fully handled yet, a new incoming
data report will overwrite it. In such case we don't guaranteed to propagate
the correct incoming data.
The trivial fix implemented here forces a single report at a time by requesting
in cp2112_read() no more than 61 byte of data, which is the payload size of a
single data report.
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Tested-by: Ellen Wang <ellen@cumulusnetworks.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/hid/hid-cp2112.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c
index 3318de6..a2dbbbe 100644
--- a/drivers/hid/hid-cp2112.c
+++ b/drivers/hid/hid-cp2112.c
@@ -356,6 +356,8 @@ static int cp2112_read(struct cp2112_device *dev, u8 *data, size_t size)
struct cp2112_force_read_report report;
int ret;
+ if (size > sizeof(dev->read_data))
+ size = sizeof(dev->read_data);
report.report = CP2112_DATA_READ_FORCE_SEND;
report.length = cpu_to_be16(size);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 005/130] ata: pmp: add quirk for Marvell 4140 SATA PMP
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (3 preceding siblings ...)
2015-08-27 22:09 ` [PATCH 3.19.y-ckt 004/130] HID: cp2112: fix to force single data-report reply Kamal Mostafa
@ 2015-08-27 22:09 ` Kamal Mostafa
2015-08-27 22:09 ` [PATCH 3.19.y-ckt 006/130] libata: add ATA_HORKAGE_BROKEN_FPDMA_AA quirk for HP 250GB SATA disk VB0250EAVER Kamal Mostafa
` (124 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:09 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Lior Amsalem, Thomas Petazzoni, Tejun Heo, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Lior Amsalem <alior@marvell.com>
commit 945b47441d83d2392ac9f984e0267ad521f24268 upstream.
This commit adds the necessary quirk to make the Marvell 4140 SATA PMP
work properly. This PMP doesn't like SRST on port number 4 (the host
port) so this commit marks this port as not supporting SRST.
Signed-off-by: Lior Amsalem <alior@marvell.com>
Reviewed-by: Nadav Haklai <nadavh@marvell.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/ata/libata-pmp.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/ata/libata-pmp.c b/drivers/ata/libata-pmp.c
index 7ccc084..85aa761 100644
--- a/drivers/ata/libata-pmp.c
+++ b/drivers/ata/libata-pmp.c
@@ -460,6 +460,13 @@ static void sata_pmp_quirks(struct ata_port *ap)
ATA_LFLAG_NO_SRST |
ATA_LFLAG_ASSUME_ATA;
}
+ } else if (vendor == 0x11ab && devid == 0x4140) {
+ /* Marvell 4140 quirks */
+ ata_for_each_link(link, ap, EDGE) {
+ /* port 4 is for SEMB device and it doesn't like SRST */
+ if (link->pmp == 4)
+ link->flags |= ATA_LFLAG_DISABLED;
+ }
}
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 006/130] libata: add ATA_HORKAGE_BROKEN_FPDMA_AA quirk for HP 250GB SATA disk VB0250EAVER
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (4 preceding siblings ...)
2015-08-27 22:09 ` [PATCH 3.19.y-ckt 005/130] ata: pmp: add quirk for Marvell 4140 SATA PMP Kamal Mostafa
@ 2015-08-27 22:09 ` Kamal Mostafa
2015-08-27 22:09 ` [PATCH 3.19.y-ckt 007/130] efi: Handle memory error structures produced based on old versions of standard Kamal Mostafa
` (123 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:09 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Aleksei Mamlin, Tejun Heo, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Aleksei Mamlin <mamlinav@gmail.com>
commit 08c85d2a599d967ede38a847f5594447b6100642 upstream.
Enabling AA on HP 250GB SATA disk VB0250EAVER causes errors:
[ 3.788362] ata3.00: failed to enable AA (error_mask=0x1)
[ 3.789243] ata3.00: failed to enable AA (error_mask=0x1)
Add the ATA_HORKAGE_BROKEN_FPDMA_AA for this specific harddisk.
tj: Collected FPDMA_AA entries and updated comment.
Signed-off-by: Aleksei Mamlin <mamlinav@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/ata/libata-core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 0f762ab..b1d52c9 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4182,9 +4182,10 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
{ "ST3320[68]13AS", "SD1[5-9]", ATA_HORKAGE_NONCQ |
ATA_HORKAGE_FIRMWARE_WARN },
- /* Seagate Momentus SpinPoint M8 seem to have FPMDA_AA issues */
+ /* drives which fail FPDMA_AA activation (some may freeze afterwards) */
{ "ST1000LM024 HN-M101MBB", "2AR10001", ATA_HORKAGE_BROKEN_FPDMA_AA },
{ "ST1000LM024 HN-M101MBB", "2BA30001", ATA_HORKAGE_BROKEN_FPDMA_AA },
+ { "VB0250EAVER", "HPG7", ATA_HORKAGE_BROKEN_FPDMA_AA },
/* Blacklist entries taken from Silicon Image 3124/3132
Windows driver .inf file - also several Linux problem reports */
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 007/130] efi: Handle memory error structures produced based on old versions of standard
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (5 preceding siblings ...)
2015-08-27 22:09 ` [PATCH 3.19.y-ckt 006/130] libata: add ATA_HORKAGE_BROKEN_FPDMA_AA quirk for HP 250GB SATA disk VB0250EAVER Kamal Mostafa
@ 2015-08-27 22:09 ` Kamal Mostafa
2015-08-27 22:09 ` [PATCH 3.19.y-ckt 008/130] phy: berlin-usb: fix divider for BG2CD Kamal Mostafa
` (122 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:09 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Tony Luck, Matt Fleming, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: "Luck, Tony" <tony.luck@intel.com>
commit 4c62360d7562a20c996836d163259c87d9378120 upstream.
The memory error record structure includes as its first field a
bitmask of which subsequent fields are valid. The allows new fields
to be added to the structure while keeping compatibility with older
software that parses these records. This mechanism was used between
versions 2.2 and 2.3 to add four new fields, growing the size of the
structure from 73 bytes to 80. But Linux just added all the new
fields so this test:
if (gdata->error_data_length >= sizeof(*mem_err))
cper_print_mem(newpfx, mem_err);
else
goto err_section_too_small;
now make Linux complain about old format records being too short.
Add a definition for the old format of the structure and use that
for the minimum size check. Pass the actual size to cper_print_mem()
so it can sanity check the validation_bits field to ensure that if
a BIOS using the old format sets bits as if it were new, we won't
access fields beyond the end of the structure.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/firmware/efi/cper.c | 15 ++++++++++++---
include/linux/cper.h | 22 +++++++++++++++++++++-
2 files changed, 33 insertions(+), 4 deletions(-)
diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
index 4fd9961..d425374 100644
--- a/drivers/firmware/efi/cper.c
+++ b/drivers/firmware/efi/cper.c
@@ -305,10 +305,17 @@ const char *cper_mem_err_unpack(struct trace_seq *p,
return ret;
}
-static void cper_print_mem(const char *pfx, const struct cper_sec_mem_err *mem)
+static void cper_print_mem(const char *pfx, const struct cper_sec_mem_err *mem,
+ int len)
{
struct cper_mem_err_compact cmem;
+ /* Don't trust UEFI 2.1/2.2 structure with bad validation bits */
+ if (len == sizeof(struct cper_sec_mem_err_old) &&
+ (mem->validation_bits & ~(CPER_MEM_VALID_RANK_NUMBER - 1))) {
+ pr_err(FW_WARN "valid bits set for fields beyond structure\n");
+ return;
+ }
if (mem->validation_bits & CPER_MEM_VALID_ERROR_STATUS)
printk("%s""error_status: 0x%016llx\n", pfx, mem->error_status);
if (mem->validation_bits & CPER_MEM_VALID_PA)
@@ -405,8 +412,10 @@ static void cper_estatus_print_section(
} else if (!uuid_le_cmp(*sec_type, CPER_SEC_PLATFORM_MEM)) {
struct cper_sec_mem_err *mem_err = (void *)(gdata + 1);
printk("%s""section_type: memory error\n", newpfx);
- if (gdata->error_data_length >= sizeof(*mem_err))
- cper_print_mem(newpfx, mem_err);
+ if (gdata->error_data_length >=
+ sizeof(struct cper_sec_mem_err_old))
+ cper_print_mem(newpfx, mem_err,
+ gdata->error_data_length);
else
goto err_section_too_small;
} else if (!uuid_le_cmp(*sec_type, CPER_SEC_PCIE)) {
diff --git a/include/linux/cper.h b/include/linux/cper.h
index 76abba4..dcacb1a 100644
--- a/include/linux/cper.h
+++ b/include/linux/cper.h
@@ -340,7 +340,27 @@ struct cper_ia_proc_ctx {
__u64 mm_reg_addr;
};
-/* Memory Error Section */
+/* Old Memory Error Section UEFI 2.1, 2.2 */
+struct cper_sec_mem_err_old {
+ __u64 validation_bits;
+ __u64 error_status;
+ __u64 physical_addr;
+ __u64 physical_addr_mask;
+ __u16 node;
+ __u16 card;
+ __u16 module;
+ __u16 bank;
+ __u16 device;
+ __u16 row;
+ __u16 column;
+ __u16 bit_pos;
+ __u64 requestor_id;
+ __u64 responder_id;
+ __u64 target_id;
+ __u8 error_type;
+};
+
+/* Memory Error Section UEFI >= 2.3 */
struct cper_sec_mem_err {
__u64 validation_bits;
__u64 error_status;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 008/130] phy: berlin-usb: fix divider for BG2CD
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (6 preceding siblings ...)
2015-08-27 22:09 ` [PATCH 3.19.y-ckt 007/130] efi: Handle memory error structures produced based on old versions of standard Kamal Mostafa
@ 2015-08-27 22:09 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 009/130] libata: add ATA_HORKAGE_NOTRIM Kamal Mostafa
` (121 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:09 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Thomas Hebb, Kishon Vijay Abraham I, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Thomas Hebb <tommyhebb@gmail.com>
commit 96696a9df935d15fd2e89603454c20a692ec232a upstream.
The marvell,berlin2cd-usb-phy compatible incorrectly sets the PLL
divider to BG2's value instead of BG2CD/BG2Q's. Change it to the right
value.
Signed-off-by: Thomas Hebb <tommyhebb@gmail.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/phy/phy-berlin-usb.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/phy/phy-berlin-usb.c b/drivers/phy/phy-berlin-usb.c
index c8a8d53..cc5b26c 100644
--- a/drivers/phy/phy-berlin-usb.c
+++ b/drivers/phy/phy-berlin-usb.c
@@ -109,8 +109,8 @@
static const u32 phy_berlin_pll_dividers[] = {
/* Berlin 2 */
CLK_REF_DIV(0xc) | FEEDBACK_CLK_DIV(0x54),
- /* Berlin 2CD */
- CLK_REF_DIV(0x6) | FEEDBACK_CLK_DIV(0x55),
+ /* Berlin 2CD/Q */
+ CLK_REF_DIV(0xc) | FEEDBACK_CLK_DIV(0x54),
};
struct phy_berlin_usb_priv {
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 009/130] libata: add ATA_HORKAGE_NOTRIM
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (7 preceding siblings ...)
2015-08-27 22:09 ` [PATCH 3.19.y-ckt 008/130] phy: berlin-usb: fix divider for BG2CD Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 010/130] libata: force disable trim for SuperSSpeed S238 Kamal Mostafa
` (120 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Arne Fitzenreiter, Tejun Heo, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Arne Fitzenreiter <arne_f@ipfire.org>
commit 71d126fd28de2d4d9b7b2088dbccd7ca62fad6e0 upstream.
Some devices lose data on TRIM whether queued or not. This patch adds
a horkage to disable TRIM.
tj: Collapsed unnecessary if() nesting.
Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
[ kamal: backport to 3.19-stable: no show_ata_dev_trim(); context ]
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/ata/libata-scsi.c | 3 ++-
include/linux/libata.h | 2 ++
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 6abd17a..d13d49f 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -2531,7 +2531,8 @@ static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf)
rbuf[14] = (lowest_aligned >> 8) & 0x3f;
rbuf[15] = lowest_aligned;
- if (ata_id_has_trim(args->id)) {
+ if (ata_id_has_trim(args->id) &&
+ !(dev->horkage & ATA_HORKAGE_NOTRIM)) {
rbuf[14] |= 0x80; /* LBPME */
if (ata_id_has_zero_after_trim(args->id) &&
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 29284b6..0009fae 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -431,6 +431,8 @@ enum {
ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */
ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */
ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */
+ ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */
+
/* DMA mask for user DMA control: User visible values; DO NOT
renumber */
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 010/130] libata: force disable trim for SuperSSpeed S238
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (8 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 009/130] libata: add ATA_HORKAGE_NOTRIM Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 011/130] libata: add ATA_HORKAGE_MAX_SEC_1024 to revert back to previous max_sectors limit Kamal Mostafa
` (119 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Arne Fitzenreiter, Tejun Heo, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Arne Fitzenreiter <arne_f@ipfire.org>
commit cda57b1b05cf7b8b99ab4b732bea0b05b6c015cc upstream.
This device loses blocks, often the partition table area, on trim.
Disable TRIM.
http://pcengines.ch/msata16a.htm
Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/ata/libata-core.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index b1d52c9..45a4c3f 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4247,6 +4247,9 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
{ "Samsung SSD 8*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
ATA_HORKAGE_ZERO_AFTER_TRIM, },
+ /* devices that don't properly handle TRIM commands */
+ { "SuperSSpeed S238*", NULL, ATA_HORKAGE_NOTRIM, },
+
/*
* As defined, the DRAT (Deterministic Read After Trim) and RZAT
* (Return Zero After Trim) flags in the ATA Command Set are
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 011/130] libata: add ATA_HORKAGE_MAX_SEC_1024 to revert back to previous max_sectors limit
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (9 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 010/130] libata: force disable trim for SuperSSpeed S238 Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 012/130] libata: increase the timeout when setting transfer mode Kamal Mostafa
` (118 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: David Milburn, Tejun Heo, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: David Milburn <dmilburn@redhat.com>
commit af34d637637eabaf49406eb35c948cd51ba262a6 upstream.
Since no longer limiting max_sectors to BLK_DEF_MAX_SECTORS (commit 34b48db66e08),
data corruption may occur on ST380013AS drive configured on 82801JI (ICH10 Family)
SATA controller. This patch will allow the driver to limit max_sectors as before
# cat /sys/block/sdb/queue/max_sectors_kb
512
I was able to double the max_sectors_kb value up to 16384 on linux-4.2.0-rc2
before seeing corruption, but seems safer to use previous limit. Without this
patch max_sectors_kb will be 32767.
tj: Minor comment update.
Reported-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: David Milburn <dmilburn@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: 34b48db66e08 ("block: remove artifical max_hw_sectors cap")
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/ata/libata-core.c | 10 ++++++++++
include/linux/ata.h | 1 +
include/linux/libata.h | 2 +-
3 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 45a4c3f..fc4d2a7 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -2486,6 +2486,10 @@ int ata_dev_configure(struct ata_device *dev)
dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_128,
dev->max_sectors);
+ if (dev->horkage & ATA_HORKAGE_MAX_SEC_1024)
+ dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_1024,
+ dev->max_sectors);
+
if (dev->horkage & ATA_HORKAGE_MAX_SEC_LBA48)
dev->max_sectors = ATA_MAX_SECTORS_LBA48;
@@ -4154,6 +4158,12 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
{ "Slimtype DVD A DS8A8SH", NULL, ATA_HORKAGE_MAX_SEC_LBA48 },
{ "Slimtype DVD A DS8A9SH", NULL, ATA_HORKAGE_MAX_SEC_LBA48 },
+ /*
+ * Causes silent data corruption with higher max sects.
+ * http://lkml.kernel.org/g/x49wpy40ysk.fsf@segfault.boston.devel.redhat.com
+ */
+ { "ST380013AS", "3.20", ATA_HORKAGE_MAX_SEC_1024 },
+
/* Devices we expect to fail diagnostics */
/* Devices where NCQ should be avoided */
diff --git a/include/linux/ata.h b/include/linux/ata.h
index f2f4d8d..3c35318 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -45,6 +45,7 @@ enum {
ATA_SECT_SIZE = 512,
ATA_MAX_SECTORS_128 = 128,
ATA_MAX_SECTORS = 256,
+ ATA_MAX_SECTORS_1024 = 1024,
ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */
ATA_MAX_SECTORS_TAPE = 65535,
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 0009fae..e67edef 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -432,7 +432,7 @@ enum {
ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */
ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */
ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */
-
+ ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */
/* DMA mask for user DMA control: User visible values; DO NOT
renumber */
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 012/130] libata: increase the timeout when setting transfer mode
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (10 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 011/130] libata: add ATA_HORKAGE_MAX_SEC_1024 to revert back to previous max_sectors limit Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 013/130] NET: AX.25: Stop heartbeat timer on disconnect Kamal Mostafa
` (117 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Mikulas Patocka, Tejun Heo, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Mikulas Patocka <mpatocka@redhat.com>
commit d531be2ca2f27cca5f041b6a140504999144a617 upstream.
I have a ST4000DM000 disk. If Linux is booted while the disk is spun down,
the command that sets transfer mode causes the disk to spin up. The
spin-up takes longer than the default 5s timeout, so the command fails and
timeout is reported.
Fix this by increasing the timeout to 15s, which is enough for the disk to
spin up.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/ata/libata-core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index fc4d2a7..564c142e 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4523,7 +4523,8 @@ static unsigned int ata_dev_set_xfermode(struct ata_device *dev)
else /* In the ancient relic department - skip all of this */
return 0;
- err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
+ /* On some disks, this command causes spin-up, so we need longer timeout */
+ err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 15000);
DPRINTK("EXIT, err_mask=%x\n", err_mask);
return err_mask;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 013/130] NET: AX.25: Stop heartbeat timer on disconnect.
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (11 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 012/130] libata: increase the timeout when setting transfer mode Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-28 8:52 ` Richard Stearn
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 014/130] can: mcp251x: fix resume when device is down Kamal Mostafa
` (116 subsequent siblings)
129 siblings, 1 reply; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Richard Stearn, Ralf Baechle, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Richard Stearn <richard@rns-stearn.demon.co.uk>
commit da278622bf04f8ddb14519a2b8214e108ef26101 upstream.
This may result in a kernel panic. The bug has always existed but
somehow we've run out of luck now and it bites.
Signed-off-by: Richard Stearn <richard@rns-stearn.demon.co.uk>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/ax25/ax25_subr.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/ax25/ax25_subr.c b/net/ax25/ax25_subr.c
index 1997538..3b78e84 100644
--- a/net/ax25/ax25_subr.c
+++ b/net/ax25/ax25_subr.c
@@ -264,6 +264,7 @@ void ax25_disconnect(ax25_cb *ax25, int reason)
{
ax25_clear_queues(ax25);
+ ax25_stop_heartbeat(ax25);
ax25_stop_t1timer(ax25);
ax25_stop_t2timer(ax25);
ax25_stop_t3timer(ax25);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* Re: [PATCH 3.19.y-ckt 013/130] NET: AX.25: Stop heartbeat timer on disconnect.
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 013/130] NET: AX.25: Stop heartbeat timer on disconnect Kamal Mostafa
@ 2015-08-28 8:52 ` Richard Stearn
2015-08-28 21:08 ` Kamal Mostafa
0 siblings, 1 reply; 138+ messages in thread
From: Richard Stearn @ 2015-08-28 8:52 UTC (permalink / raw)
To: Kamal Mostafa
Cc: linux-kernel, stable, kernel-team, Ralf Baechle, David S. Miller
Kamal Mostafa wrote:
> 3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
Hi Kamal
This patch should _not_ be applied.
Breaks other parts of the driver.
Investigations on-going.
Apologies for the disruption.
--
Regards
Richard
^ permalink raw reply [flat|nested] 138+ messages in thread
* Re: [PATCH 3.19.y-ckt 013/130] NET: AX.25: Stop heartbeat timer on disconnect.
2015-08-28 8:52 ` Richard Stearn
@ 2015-08-28 21:08 ` Kamal Mostafa
0 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-28 21:08 UTC (permalink / raw)
To: Richard Stearn
Cc: linux-kernel, stable, kernel-team, Ralf Baechle, David S. Miller
On Fri, 2015-08-28 at 09:52 +0100, Richard Stearn wrote:
> Kamal Mostafa wrote:
> > 3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
>
> Hi Kamal
>
> This patch should _not_ be applied.
> Breaks other parts of the driver.
> Investigations on-going.
>
> Apologies for the disruption.
No worries -- I've dropped this patch from 3.19-stable. Thanks very
much, Richard.
-Kamal
^ permalink raw reply [flat|nested] 138+ messages in thread
* [PATCH 3.19.y-ckt 014/130] can: mcp251x: fix resume when device is down
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (12 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 013/130] NET: AX.25: Stop heartbeat timer on disconnect Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 015/130] libata: Do not blacklist M510DC Kamal Mostafa
` (115 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Stefan Agner, Marc Kleine-Budde, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Stefan Agner <stefan@agner.ch>
commit 25b401c1816ae64bcc5dcb1d39ab41812522a0ce upstream.
If a valid power regulator or a dummy regulator is used (which
happens to be the case when no regulator is specified), restart_work
is queued no matter whether the device was running or not at suspend
time. Since work queues get initialized in the ndo_open callback,
resuming leads to a NULL pointer exception.
Reverse exactly the steps executed at suspend time:
- Enable the power regulator in any case
- Enable the transceiver regulator if the device was running, even in
case we have a power regulator
- Queue restart_work only in case the device was running
Fixes: bf66f3736a94 ("can: mcp251x: Move to threaded interrupts instead of workqueues.")
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/net/can/spi/mcp251x.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/drivers/net/can/spi/mcp251x.c b/drivers/net/can/spi/mcp251x.c
index c66d699..0c8094e 100644
--- a/drivers/net/can/spi/mcp251x.c
+++ b/drivers/net/can/spi/mcp251x.c
@@ -1220,17 +1220,16 @@ static int __maybe_unused mcp251x_can_resume(struct device *dev)
struct spi_device *spi = to_spi_device(dev);
struct mcp251x_priv *priv = spi_get_drvdata(spi);
- if (priv->after_suspend & AFTER_SUSPEND_POWER) {
+ if (priv->after_suspend & AFTER_SUSPEND_POWER)
mcp251x_power_enable(priv->power, 1);
+
+ if (priv->after_suspend & AFTER_SUSPEND_UP) {
+ mcp251x_power_enable(priv->transceiver, 1);
queue_work(priv->wq, &priv->restart_work);
} else {
- if (priv->after_suspend & AFTER_SUSPEND_UP) {
- mcp251x_power_enable(priv->transceiver, 1);
- queue_work(priv->wq, &priv->restart_work);
- } else {
- priv->after_suspend = 0;
- }
+ priv->after_suspend = 0;
}
+
priv->force_quit = 0;
enable_irq(spi->irq);
return 0;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 015/130] libata: Do not blacklist M510DC
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (13 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 014/130] can: mcp251x: fix resume when device is down Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 016/130] Input: zforce - don't overwrite the stack Kamal Mostafa
` (114 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Martin K. Petersen, Tejun Heo, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: "Martin K. Petersen" <martin.petersen@oracle.com>
commit 9051bd393cf25e76dfb45409792719a854661500 upstream.
A new Micron drive was just announced, once again recycling the first
part of the model string. Add an underscore to the M510/M550 pattern to
avoid picking up the new DC drive.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/ata/libata-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 564c142e..da7d05e 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4248,7 +4248,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
ATA_HORKAGE_ZERO_AFTER_TRIM, },
{ "Crucial_CT*M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
ATA_HORKAGE_ZERO_AFTER_TRIM, },
- { "Micron_M5[15]0*", "MU01", ATA_HORKAGE_NO_NCQ_TRIM |
+ { "Micron_M5[15]0_*", "MU01", ATA_HORKAGE_NO_NCQ_TRIM |
ATA_HORKAGE_ZERO_AFTER_TRIM, },
{ "Crucial_CT*M550*", "MU01", ATA_HORKAGE_NO_NCQ_TRIM |
ATA_HORKAGE_ZERO_AFTER_TRIM, },
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 016/130] Input: zforce - don't overwrite the stack
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (14 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 015/130] libata: Do not blacklist M510DC Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:24 ` Dmitry Torokhov
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 017/130] mac80211: clear subdir_stations when removing debugfs Kamal Mostafa
` (113 subsequent siblings)
129 siblings, 1 reply; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Oleksij Rempel, Dirk Behme, Dmitry Torokhov, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Oleksij Rempel <external.Oleksij.Rempel@de.bosch.com>
commit 7d01cd261c76f95913c81554a751968a1d282d3a upstream.
If we get a corrupted packet with PAYLOAD_LENGTH > FRAME_MAXSIZE, we
will silently overwrite the stack.
Signed-off-by: Oleksij Rempel <external.Oleksij.Rempel@de.bosch.com>
Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/input/touchscreen/zforce_ts.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/input/touchscreen/zforce_ts.c b/drivers/input/touchscreen/zforce_ts.c
index 19880c7..a9e1ee3 100644
--- a/drivers/input/touchscreen/zforce_ts.c
+++ b/drivers/input/touchscreen/zforce_ts.c
@@ -430,7 +430,7 @@ static int zforce_read_packet(struct zforce_ts *ts, u8 *buf)
goto unlock;
}
- if (buf[PAYLOAD_LENGTH] == 0) {
+ if (buf[PAYLOAD_LENGTH] == 0 || buf[PAYLOAD_LENGTH] > FRAME_MAXSIZE) {
dev_err(&client->dev, "invalid payload length: %d\n",
buf[PAYLOAD_LENGTH]);
ret = -EIO;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* Re: [PATCH 3.19.y-ckt 016/130] Input: zforce - don't overwrite the stack
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 016/130] Input: zforce - don't overwrite the stack Kamal Mostafa
@ 2015-08-27 22:24 ` Dmitry Torokhov
2015-08-27 23:13 ` Kamal Mostafa
0 siblings, 1 reply; 138+ messages in thread
From: Dmitry Torokhov @ 2015-08-27 22:24 UTC (permalink / raw)
To: Kamal Mostafa, linux-kernel, stable, kernel-team
Cc: Oleksij Rempel, Dirk Behme
On August 27, 2015 3:10:07 PM PDT, Kamal Mostafa <kamal@canonical.com> wrote:
>3.19.8-ckt6 -stable review patch. If anyone has any objections, please
>let me know.
Bad patch, reverted in mainline, please drop.
>
>------------------
>
>From: Oleksij Rempel <external.Oleksij.Rempel@de.bosch.com>
>
>commit 7d01cd261c76f95913c81554a751968a1d282d3a upstream.
>
>If we get a corrupted packet with PAYLOAD_LENGTH > FRAME_MAXSIZE, we
>will silently overwrite the stack.
>
>Signed-off-by: Oleksij Rempel <external.Oleksij.Rempel@de.bosch.com>
>Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
>Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
>Signed-off-by: Kamal Mostafa <kamal@canonical.com>
>---
> drivers/input/touchscreen/zforce_ts.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/drivers/input/touchscreen/zforce_ts.c
>b/drivers/input/touchscreen/zforce_ts.c
>index 19880c7..a9e1ee3 100644
>--- a/drivers/input/touchscreen/zforce_ts.c
>+++ b/drivers/input/touchscreen/zforce_ts.c
>@@ -430,7 +430,7 @@ static int zforce_read_packet(struct zforce_ts *ts,
>u8 *buf)
> goto unlock;
> }
>
>- if (buf[PAYLOAD_LENGTH] == 0) {
>+ if (buf[PAYLOAD_LENGTH] == 0 || buf[PAYLOAD_LENGTH] > FRAME_MAXSIZE)
>{
> dev_err(&client->dev, "invalid payload length: %d\n",
> buf[PAYLOAD_LENGTH]);
> ret = -EIO;
Thanks.
--
Dmitry
^ permalink raw reply [flat|nested] 138+ messages in thread* Re: [PATCH 3.19.y-ckt 016/130] Input: zforce - don't overwrite the stack
2015-08-27 22:24 ` Dmitry Torokhov
@ 2015-08-27 23:13 ` Kamal Mostafa
0 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 23:13 UTC (permalink / raw)
To: Dmitry Torokhov
Cc: linux-kernel, stable, kernel-team, Oleksij Rempel, Dirk Behme
On Thu, 2015-08-27 at 15:24 -0700, Dmitry Torokhov wrote:
> On August 27, 2015 3:10:07 PM PDT, Kamal Mostafa <kamal@canonical.com> wrote:
> >3.19.8-ckt6 -stable review patch. If anyone has any objections, please
> >let me know.
>
> Bad patch, reverted in mainline, please drop.
OK, dropped from 3.19-stable. Thanks Dmitry!
-Kamal
> >
> >------------------
> >
> >From: Oleksij Rempel <external.Oleksij.Rempel@de.bosch.com>
> >
> >commit 7d01cd261c76f95913c81554a751968a1d282d3a upstream.
> >
> >If we get a corrupted packet with PAYLOAD_LENGTH > FRAME_MAXSIZE, we
> >will silently overwrite the stack.
> >
> >Signed-off-by: Oleksij Rempel <external.Oleksij.Rempel@de.bosch.com>
> >Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
> >Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> >Signed-off-by: Kamal Mostafa <kamal@canonical.com>
> >---
> > drivers/input/touchscreen/zforce_ts.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> >diff --git a/drivers/input/touchscreen/zforce_ts.c
> >b/drivers/input/touchscreen/zforce_ts.c
> >index 19880c7..a9e1ee3 100644
> >--- a/drivers/input/touchscreen/zforce_ts.c
> >+++ b/drivers/input/touchscreen/zforce_ts.c
> >@@ -430,7 +430,7 @@ static int zforce_read_packet(struct zforce_ts *ts,
> >u8 *buf)
> > goto unlock;
> > }
> >
> >- if (buf[PAYLOAD_LENGTH] == 0) {
> >+ if (buf[PAYLOAD_LENGTH] == 0 || buf[PAYLOAD_LENGTH] > FRAME_MAXSIZE)
> >{
> > dev_err(&client->dev, "invalid payload length: %d\n",
> > buf[PAYLOAD_LENGTH]);
> > ret = -EIO;
>
>
> Thanks.
>
^ permalink raw reply [flat|nested] 138+ messages in thread
* [PATCH 3.19.y-ckt 017/130] mac80211: clear subdir_stations when removing debugfs
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (15 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 016/130] Input: zforce - don't overwrite the stack Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 018/130] ALSA: pcm: Fix lockdep warning with nonatomic PCM ops Kamal Mostafa
` (112 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Tom Hughes, Johannes Berg, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Tom Hughes <tom@compton.nu>
commit 4479004e6409087d1b4986881dc98c6c15dffb28 upstream.
If we don't do this, and we then fail to recreate the debugfs
directory during a mode change, then we will fail later trying
to add stations to this now bogus directory:
BUG: unable to handle kernel NULL pointer dereference at 0000006c
IP: [<c0a92202>] mutex_lock+0x12/0x30
Call Trace:
[<c0678ab4>] start_creating+0x44/0xc0
[<c0679203>] debugfs_create_dir+0x13/0xf0
[<f8a938ae>] ieee80211_sta_debugfs_add+0x6e/0x490 [mac80211]
Signed-off-by: Tom Hughes <tom@compton.nu>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/mac80211/debugfs_netdev.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index c68896a..2d19963 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -725,6 +725,7 @@ void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
debugfs_remove_recursive(sdata->vif.debugfs_dir);
sdata->vif.debugfs_dir = NULL;
+ sdata->debugfs.subdir_stations = NULL;
}
void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata)
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 018/130] ALSA: pcm: Fix lockdep warning with nonatomic PCM ops
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (16 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 017/130] mac80211: clear subdir_stations when removing debugfs Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 019/130] iio: adc: vf610: fix the adc register read fail issue Kamal Mostafa
` (111 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Takashi Iwai, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Takashi Iwai <tiwai@suse.de>
commit 67756e3191c90e7c0b94b8b2fb63de255b6cd337 upstream.
With the nonatomic PCM ops, the system may spew lockdep warnings like:
=============================================
[ INFO: possible recursive locking detected ]
4.2.0-rc1-jeejaval3 #12 Not tainted
---------------------------------------------
aplay/4029 is trying to acquire lock:
(snd_pcm_link_rwsem){.+.+.+}, at: [<ffffffff816fd473>] snd_pcm_stream_lock+0x43/0x60
but task is already holding lock:
(snd_pcm_link_rwsem){.+.+.+}, at: [<ffffffff816fcf29>] snd_pcm_action_nonatomic+0x29/0x80
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(snd_pcm_link_rwsem);
lock(snd_pcm_link_rwsem);
Although this is false-positive as the rwsem is taken always as
read-only for these code paths, it's certainly annoying to see this at
any occasion. A simple fix is to use down_read_nested() in
snd_pcm_stream_lock() that can be called inside another lock.
Reported-by: Vinod Koul <vinod.koul@intel.com>
Reported-by: Jeeja Kp <jeeja.kp@intel.com>
Tested-by: Jeeja Kp <jeeja.kp@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
sound/core/pcm_native.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 64d9863..3f2ac8d 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -85,7 +85,7 @@ static DECLARE_RWSEM(snd_pcm_link_rwsem);
void snd_pcm_stream_lock(struct snd_pcm_substream *substream)
{
if (substream->pcm->nonatomic) {
- down_read(&snd_pcm_link_rwsem);
+ down_read_nested(&snd_pcm_link_rwsem, SINGLE_DEPTH_NESTING);
mutex_lock(&substream->self_group.mutex);
} else {
read_lock(&snd_pcm_link_rwlock);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 019/130] iio: adc: vf610: fix the adc register read fail issue
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (17 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 018/130] ALSA: pcm: Fix lockdep warning with nonatomic PCM ops Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 020/130] ALSA: hda - Add headset mic support for Acer Aspire V5-573G Kamal Mostafa
` (110 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Haibo Chen, Fugang Duan, Jonathan Cameron, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Fugang Duan <b38611@freescale.com>
commit bf604a4c44a91cc2ceb60d4643a091b6b32cc999 upstream.
Read the register only when the adc register address is 4 byte aligned.
(rather than the other way around).
Signed-off-by: Haibo Chen <haibo.chen@freescale.com>
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/iio/adc/vf610_adc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c
index e63b8e7..60617ed 100644
--- a/drivers/iio/adc/vf610_adc.c
+++ b/drivers/iio/adc/vf610_adc.c
@@ -579,7 +579,7 @@ static int vf610_adc_reg_access(struct iio_dev *indio_dev,
struct vf610_adc *info = iio_priv(indio_dev);
if ((readval == NULL) ||
- (!(reg % 4) || (reg > VF610_REG_ADC_PCTL)))
+ ((reg % 4) || (reg > VF610_REG_ADC_PCTL)))
return -EINVAL;
*readval = readl(info->regs + reg);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 020/130] ALSA: hda - Add headset mic support for Acer Aspire V5-573G
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (18 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 019/130] iio: adc: vf610: fix the adc register read fail issue Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 021/130] Subject: pinctrl: imx1-core: Fix debug output in .pin_config_set callback Kamal Mostafa
` (109 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Mateusz Sylwestrzak, Takashi Iwai, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Mateusz Sylwestrzak <matisec7@gmail.com>
commit 0420694dddeb9e269a1ab2129a0119a5cea294a4 upstream.
Acer Aspire V5 with the ALC282 codec is given the wrong value for the
0x19 PIN by the laptop's BIOS. Overriding it with the correct value
adds support for the headset microphone which would not otherwise be
visible in the system.
The fix is based on commit 7819717b1134 with a similar quirk for Acer
Aspire with the ALC269 codec.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=96201
Signed-off-by: Mateusz Sylwestrzak <matisec7@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
sound/pci/hda/patch_realtek.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 652e6a8..270ee97 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4836,7 +4836,7 @@ static const struct hda_fixup alc269_fixups[] = {
{ 0x14, 0x90170110 },
{ 0x17, 0x40000008 },
{ 0x18, 0x411111f0 },
- { 0x19, 0x411111f0 },
+ { 0x19, 0x01a1913c },
{ 0x1a, 0x411111f0 },
{ 0x1b, 0x411111f0 },
{ 0x1d, 0x40f89b2d },
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 021/130] Subject: pinctrl: imx1-core: Fix debug output in .pin_config_set callback
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (19 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 020/130] ALSA: hda - Add headset mic support for Acer Aspire V5-573G Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 022/130] ALSA: hda: add new AMD PCI IDs with proper driver caps Kamal Mostafa
` (108 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Uwe Kleine-König, Linus Walleij, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>
commit 9571b25df1dbf4db17191b54f59734e8b77fd591 upstream.
imx1_pinconf_set assumes that the array of pins in struct
imx1_pinctrl_soc_info can be indexed by pin id to get the
pinctrl_pin_desc for a pin. This used to be correct up to commit
607af165c047 which removed some entries from the array and so made it
wrong to access the array by pin id.
The result of this bug is a wrong pin name in the output for small pin
ids and an oops for the bigger ones.
This patch is the result of a discussion that includes patches by Markus
Pargmann and Chris Ruehl.
Fixes: 607af165c047 ("pinctrl: i.MX27: Remove nonexistent pad definitions")
Reported-by: Chris Ruehl <chris.ruehl@gtsys.com.hk>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/pinctrl/freescale/pinctrl-imx1-core.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/pinctrl/freescale/pinctrl-imx1-core.c b/drivers/pinctrl/freescale/pinctrl-imx1-core.c
index 5ac59fb..d3a3be7 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx1-core.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx1-core.c
@@ -403,14 +403,13 @@ static int imx1_pinconf_set(struct pinctrl_dev *pctldev,
unsigned num_configs)
{
struct imx1_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
- const struct imx1_pinctrl_soc_info *info = ipctl->info;
int i;
for (i = 0; i != num_configs; ++i) {
imx1_write_bit(ipctl, pin_id, configs[i] & 0x01, MX1_PUEN);
dev_dbg(ipctl->dev, "pinconf set pullup pin %s\n",
- info->pins[pin_id].name);
+ pin_desc_get(pctldev, pin_id)->name);
}
return 0;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 022/130] ALSA: hda: add new AMD PCI IDs with proper driver caps
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (20 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 021/130] Subject: pinctrl: imx1-core: Fix debug output in .pin_config_set callback Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 023/130] x86/mm: Add parenthesis for TLB tracepoint size calculation Kamal Mostafa
` (107 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Maruthi Bayyavarapu, Takashi Iwai, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Maruthi Srinivas Bayyavarapu <Maruthi.Bayyavarapu@amd.com>
commit 5022813ddb28b7679e8285812d52aaeb7e1e7657 upstream.
Fixes audio problems on newer asics
Signed-off-by: Maruthi Bayyavarapu <maruthi.bayyavarapu@amd.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
sound/pci/hda/hda_intel.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 158ec63..a4e6e2f 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2096,6 +2096,8 @@ static const struct pci_device_id azx_ids[] = {
/* ATI HDMI */
{ PCI_DEVICE(0x1002, 0x1308),
.driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+ { PCI_DEVICE(0x1002, 0x157a),
+ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
{ PCI_DEVICE(0x1002, 0x793b),
.driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
{ PCI_DEVICE(0x1002, 0x7919),
@@ -2150,8 +2152,14 @@ static const struct pci_device_id azx_ids[] = {
.driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
{ PCI_DEVICE(0x1002, 0xaab0),
.driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+ { PCI_DEVICE(0x1002, 0xaac0),
+ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
{ PCI_DEVICE(0x1002, 0xaac8),
.driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+ { PCI_DEVICE(0x1002, 0xaad8),
+ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
+ { PCI_DEVICE(0x1002, 0xaae8),
+ .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
/* VIA VT8251/VT8237A */
{ PCI_DEVICE(0x1106, 0x3288),
.driver_data = AZX_DRIVER_VIA | AZX_DCAPS_POSFIX_VIA },
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 023/130] x86/mm: Add parenthesis for TLB tracepoint size calculation
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (21 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 022/130] ALSA: hda: add new AMD PCI IDs with proper driver caps Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 024/130] x86/mpx: Do not set ->vm_ops on MPX VMAs Kamal Mostafa
` (106 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Dave Hansen, Andrew Morton, Linus Torvalds, Peter Zijlstra,
Thomas Gleixner, dave, Ingo Molnar, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Dave Hansen <dave.hansen@linux.intel.com>
commit bbc03778b9954a2ec93baed63718e4df0192f130 upstream.
flush_tlb_info->flush_start/end are both normal virtual
addresses. When calculating 'nr_pages' (only used for the
tracepoint), I neglected to put parenthesis in.
Thanks to David Koufaty for pointing this out.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dave@sr71.net
Link: http://lkml.kernel.org/r/20150720230153.9E834081@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
arch/x86/mm/tlb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index ee61c36..020bcc7 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -120,7 +120,7 @@ static void flush_tlb_func(void *info)
} else {
unsigned long addr;
unsigned long nr_pages =
- f->flush_end - f->flush_start / PAGE_SIZE;
+ (f->flush_end - f->flush_start) / PAGE_SIZE;
addr = f->flush_start;
while (addr < f->flush_end) {
__flush_tlb_single(addr);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 024/130] x86/mpx: Do not set ->vm_ops on MPX VMAs
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (22 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 023/130] x86/mm: Add parenthesis for TLB tracepoint size calculation Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 025/130] net: mvneta: fix refilling for Rx DMA buffers Kamal Mostafa
` (105 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Kirill A. Shutemov, Dave Hansen, Andy Lutomirski, Linus Torvalds,
Peter Zijlstra, Thomas Gleixner, dave, Ingo Molnar, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
commit a89652769470d12cd484ee3d3f7bde0742be8d96 upstream.
MPX setups private anonymous mapping, but uses vma->vm_ops too.
This can confuse core VM, as it relies on vm->vm_ops to
distinguish file VMAs from anonymous.
As result we will get SIGBUS, because handle_pte_fault() thinks
it's file VMA without vm_ops->fault and it doesn't know how to
handle the situation properly.
Let's fix that by not setting ->vm_ops.
We don't really need ->vm_ops here: MPX VMA can be detected with
VM_MPX flag. And vma_merge() will not merge MPX VMA with non-MPX
VMA, because ->vm_flags won't match.
The only thing left is name of VMA. I'm not sure if it's part of
ABI, or we can just drop it. The patch keep it by providing
arch_vma_name() on x86.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dave@sr71.net
Link: http://lkml.kernel.org/r/20150720212958.305CC3E9@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
[ kamal: backport to 3.19-stable: fewer is_mpx_vma() calls to replace ]
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
arch/x86/mm/mmap.c | 7 +++++++
arch/x86/mm/mpx.c | 20 +-------------------
2 files changed, 8 insertions(+), 19 deletions(-)
diff --git a/arch/x86/mm/mmap.c b/arch/x86/mm/mmap.c
index df4552b..2e0b964 100644
--- a/arch/x86/mm/mmap.c
+++ b/arch/x86/mm/mmap.c
@@ -122,3 +122,10 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
mm->get_unmapped_area = arch_get_unmapped_area_topdown;
}
}
+
+const char *arch_vma_name(struct vm_area_struct *vma)
+{
+ if (vma->vm_flags & VM_MPX)
+ return "[mpx]";
+ return NULL;
+}
diff --git a/arch/x86/mm/mpx.c b/arch/x86/mm/mpx.c
index c439ec4..4d1c11c 100644
--- a/arch/x86/mm/mpx.c
+++ b/arch/x86/mm/mpx.c
@@ -18,26 +18,9 @@
#include <asm/processor.h>
#include <asm/fpu-internal.h>
-static const char *mpx_mapping_name(struct vm_area_struct *vma)
-{
- return "[mpx]";
-}
-
-static struct vm_operations_struct mpx_vma_ops = {
- .name = mpx_mapping_name,
-};
-
-static int is_mpx_vma(struct vm_area_struct *vma)
-{
- return (vma->vm_ops == &mpx_vma_ops);
-}
-
/*
* This is really a simplified "vm_mmap". it only handles MPX
* bounds tables (the bounds directory is user-allocated).
- *
- * Later on, we use the vma->vm_ops to uniquely identify these
- * VMAs.
*/
static unsigned long mpx_mmap(unsigned long len)
{
@@ -83,7 +66,6 @@ static unsigned long mpx_mmap(unsigned long len)
ret = -ENOMEM;
goto out;
}
- vma->vm_ops = &mpx_vma_ops;
if (vm_flags & VM_LOCKED) {
up_write(&mm->mmap_sem);
@@ -661,7 +643,7 @@ static int zap_bt_entries(struct mm_struct *mm,
* so stop immediately and return an error. This
* probably results in a SIGSEGV.
*/
- if (!is_mpx_vma(vma))
+ if (!(vma->vm_flags & VM_MPX))
return -EINVAL;
len = min(vma->vm_end, end) - addr;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 025/130] net: mvneta: fix refilling for Rx DMA buffers
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (23 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 024/130] x86/mpx: Do not set ->vm_ops on MPX VMAs Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 026/130] ALSA: hda - Add new GPU codec ID 0x10de007d to snd-hda Kamal Mostafa
` (104 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Simon Guinot, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Simon Guinot <simon.guinot@sequanux.org>
commit a84e32894191cfcbffa54180d78d7d4654d56c20 upstream.
With the actual code, if a memory allocation error happens while
refilling a Rx descriptor, then the original Rx buffer is both passed
to the networking stack (in a SKB) and let in the Rx ring. This leads
to various kernel oops and crashes.
As a fix, this patch moves Rx descriptor refilling ahead of building
SKB with the associated Rx buffer. In case of a memory allocation
failure, data is dropped and the original DMA buffer is put back into
the Rx ring.
Signed-off-by: Simon Guinot <simon.guinot@sequanux.org>
Fixes: c5aff18204da ("net: mvneta: driver for Marvell Armada 370/XP network unit")
Tested-by: Yoann Sculo <yoann@sculo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/net/ethernet/marvell/mvneta.c | 22 ++++++++++------------
1 file changed, 10 insertions(+), 12 deletions(-)
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index 2562249..fab4757 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -1435,7 +1435,7 @@ static int mvneta_rx(struct mvneta_port *pp, int rx_todo,
struct mvneta_rx_queue *rxq)
{
struct net_device *dev = pp->dev;
- int rx_done, rx_filled;
+ int rx_done;
u32 rcvd_pkts = 0;
u32 rcvd_bytes = 0;
@@ -1446,7 +1446,6 @@ static int mvneta_rx(struct mvneta_port *pp, int rx_todo,
rx_todo = rx_done;
rx_done = 0;
- rx_filled = 0;
/* Fairness NAPI loop */
while (rx_done < rx_todo) {
@@ -1457,7 +1456,6 @@ static int mvneta_rx(struct mvneta_port *pp, int rx_todo,
int rx_bytes, err;
rx_done++;
- rx_filled++;
rx_status = rx_desc->status;
rx_bytes = rx_desc->data_size - (ETH_FCS_LEN + MVNETA_MH_SIZE);
data = (unsigned char *)rx_desc->buf_cookie;
@@ -1497,6 +1495,14 @@ static int mvneta_rx(struct mvneta_port *pp, int rx_todo,
continue;
}
+ /* Refill processing */
+ err = mvneta_rx_refill(pp, rx_desc);
+ if (err) {
+ netdev_err(dev, "Linux processing - Can't refill\n");
+ rxq->missed++;
+ goto err_drop_frame;
+ }
+
skb = build_skb(data, pp->frag_size > PAGE_SIZE ? 0 : pp->frag_size);
if (!skb)
goto err_drop_frame;
@@ -1516,14 +1522,6 @@ static int mvneta_rx(struct mvneta_port *pp, int rx_todo,
mvneta_rx_csum(pp, rx_status, skb);
napi_gro_receive(&pp->napi, skb);
-
- /* Refill processing */
- err = mvneta_rx_refill(pp, rx_desc);
- if (err) {
- netdev_err(dev, "Linux processing - Can't refill\n");
- rxq->missed++;
- rx_filled--;
- }
}
if (rcvd_pkts) {
@@ -1536,7 +1534,7 @@ static int mvneta_rx(struct mvneta_port *pp, int rx_todo,
}
/* Update rxq management counters */
- mvneta_rxq_desc_num_update(pp, rxq, rx_done, rx_filled);
+ mvneta_rxq_desc_num_update(pp, rxq, rx_done, rx_done);
return rx_done;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 026/130] ALSA: hda - Add new GPU codec ID 0x10de007d to snd-hda
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (24 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 025/130] net: mvneta: fix refilling for Rx DMA buffers Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 027/130] drm/i915: Use two 32bit reads for select 64bit REG_READ ioctls Kamal Mostafa
` (103 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Aaron Plattner, Takashi Iwai, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Aaron Plattner <aplattner@nvidia.com>
commit 6c3d91193d829bf58a35a10650415b05a736ca6c upstream.
Vendor ID 0x10de007d is used by a yet-to-be-named GPU chip.
This chip also has the 2-ch audio swapping bug, so patch_nvhdmi is
appropriate here.
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
sound/pci/hda/patch_hdmi.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index b422e40..cfdc5a7 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -3354,6 +3354,7 @@ static const struct hda_codec_preset snd_hda_preset_hdmi[] = {
{ .id = 0x10de0070, .name = "GPU 70 HDMI/DP", .patch = patch_nvhdmi },
{ .id = 0x10de0071, .name = "GPU 71 HDMI/DP", .patch = patch_nvhdmi },
{ .id = 0x10de0072, .name = "GPU 72 HDMI/DP", .patch = patch_nvhdmi },
+{ .id = 0x10de007d, .name = "GPU 7d HDMI/DP", .patch = patch_nvhdmi },
{ .id = 0x10de8001, .name = "MCP73 HDMI", .patch = patch_nvhdmi_2ch },
{ .id = 0x11069f80, .name = "VX900 HDMI/DP", .patch = patch_via_hdmi },
{ .id = 0x11069f81, .name = "VX900 HDMI/DP", .patch = patch_via_hdmi },
@@ -3415,6 +3416,7 @@ MODULE_ALIAS("snd-hda-codec-id:10de0067");
MODULE_ALIAS("snd-hda-codec-id:10de0070");
MODULE_ALIAS("snd-hda-codec-id:10de0071");
MODULE_ALIAS("snd-hda-codec-id:10de0072");
+MODULE_ALIAS("snd-hda-codec-id:10de007d");
MODULE_ALIAS("snd-hda-codec-id:10de8001");
MODULE_ALIAS("snd-hda-codec-id:11069f80");
MODULE_ALIAS("snd-hda-codec-id:11069f81");
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 027/130] drm/i915: Use two 32bit reads for select 64bit REG_READ ioctls
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (25 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 026/130] ALSA: hda - Add new GPU codec ID 0x10de007d to snd-hda Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 028/130] md/raid10: always set reshape_safe when initializing reshape_position Kamal Mostafa
` (102 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Chris Wilson, Michał Winiarski, Daniel Vetter, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Chris Wilson <chris@chris-wilson.co.uk>
commit 648a9bc5308d952f2c80772301b339f73026f013 upstream.
Since the hardware sometimes mysteriously totally flummoxes the 64bit
read of a 64bit register when read using a single instruction, split the
read into two instructions. Since the read here is of automatically
incrementing timestamp counters, we also have to be very careful in
order to make sure that it does not increment between the two
instructions.
However, since userspace tried to workaround this issue and so enshrined
this ABI for a broken hardware read and in the process neglected that
the read only fails in some environments, we have to introduce a new
uABI flag for userspace to request the 2x32 bit accurate read of the
timestamp.
v2: Fix alignment check and include details of the workaround for
userspace.
Reported-by: Karol Herbst <freedesktop@karolherbst.de>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91317
Testcase: igt/gem_reg_read
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Tested-by: Michał Winiarski <michal.winiarski@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[ kamal: backport to 3.19-stable: context ]
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/gpu/drm/i915/intel_uncore.c | 26 +++++++++++++++++++-------
include/uapi/drm/i915_drm.h | 8 ++++++++
2 files changed, 27 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index 46de8d7..5632611 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -1273,10 +1273,12 @@ int i915_reg_read_ioctl(struct drm_device *dev,
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_reg_read *reg = data;
struct register_whitelist const *entry = whitelist;
+ unsigned size;
+ u64 offset;
int i, ret = 0;
for (i = 0; i < ARRAY_SIZE(whitelist); i++, entry++) {
- if (entry->offset == reg->offset &&
+ if (entry->offset == (reg->offset & -entry->size) &&
(1 << INTEL_INFO(dev)->gen & entry->gen_bitmask))
break;
}
@@ -1284,23 +1286,33 @@ int i915_reg_read_ioctl(struct drm_device *dev,
if (i == ARRAY_SIZE(whitelist))
return -EINVAL;
+ /* We use the low bits to encode extra flags as the register should
+ * be naturally aligned (and those that are not so aligned merely
+ * limit the available flags for that register).
+ */
+ offset = entry->offset;
+ size = entry->size;
+ size |= reg->offset ^ offset;
+
intel_runtime_pm_get(dev_priv);
- switch (entry->size) {
+ switch (size) {
+ case 8 | 1:
+ reg->val = I915_READ64_2x32(offset, offset+4);
+ break;
case 8:
- reg->val = I915_READ64(reg->offset);
+ reg->val = I915_READ64(offset);
break;
case 4:
- reg->val = I915_READ(reg->offset);
+ reg->val = I915_READ(offset);
break;
case 2:
- reg->val = I915_READ16(reg->offset);
+ reg->val = I915_READ16(offset);
break;
case 1:
- reg->val = I915_READ8(reg->offset);
+ reg->val = I915_READ8(offset);
break;
default:
- WARN_ON(1);
ret = -EINVAL;
goto out;
}
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index 2502622..1c7dcc6 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -1042,6 +1042,14 @@ struct drm_i915_reg_read {
__u64 offset;
__u64 val; /* Return value */
};
+/* Known registers:
+ *
+ * Render engine timestamp - 0x2358 + 64bit - gen7+
+ * - Note this register returns an invalid value if using the default
+ * single instruction 8byte read, in order to workaround that use
+ * offset (0x2538 | 1) instead.
+ *
+ */
struct drm_i915_reset_stats {
__u32 ctx_id;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 028/130] md/raid10: always set reshape_safe when initializing reshape_position.
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (26 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 027/130] drm/i915: Use two 32bit reads for select 64bit REG_READ ioctls Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 029/130] ALSA: hda - Add headset mic pin quirk for a Dell device Kamal Mostafa
` (101 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: NeilBrown, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: NeilBrown <neilb@suse.com>
commit 299b0685e31c9f3dcc2d58ee3beca761a40b44b3 upstream.
'reshape_position' tracks where in the reshape we have reached.
'reshape_safe' tracks where in the reshape we have safely recorded
in the metadata.
These are compared to determine when to update the metadata.
So it is important that reshape_safe is initialised properly.
Currently it isn't. When starting a reshape from the beginning
it usually has the correct value by luck. But when reducing the
number of devices in a RAID10, it has the wrong value and this leads
to the metadata not being updated correctly.
This can lead to corruption if the reshape is not allowed to complete.
This patch is suitable for any -stable kernel which supports RAID10
reshape, which is 3.5 and later.
Fixes: 3ea7daa5d7fd ("md/raid10: add reshape support")
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/md/raid10.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 32e282f..17eb767 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -3581,6 +3581,7 @@ static struct r10conf *setup_conf(struct mddev *mddev)
/* far_copies must be 1 */
conf->prev.stride = conf->dev_sectors;
}
+ conf->reshape_safe = conf->reshape_progress;
spin_lock_init(&conf->device_lock);
INIT_LIST_HEAD(&conf->retry_list);
@@ -3788,7 +3789,6 @@ static int run(struct mddev *mddev)
}
conf->offset_diff = min_offset_diff;
- conf->reshape_safe = conf->reshape_progress;
clear_bit(MD_RECOVERY_SYNC, &mddev->recovery);
clear_bit(MD_RECOVERY_CHECK, &mddev->recovery);
set_bit(MD_RECOVERY_RESHAPE, &mddev->recovery);
@@ -4135,6 +4135,7 @@ static int raid10_start_reshape(struct mddev *mddev)
conf->reshape_progress = size;
} else
conf->reshape_progress = 0;
+ conf->reshape_safe = conf->reshape_progress;
spin_unlock_irq(&conf->device_lock);
if (mddev->delta_disks && mddev->bitmap) {
@@ -4201,6 +4202,7 @@ abort:
rdev->new_data_offset = rdev->data_offset;
smp_wmb();
conf->reshape_progress = MaxSector;
+ conf->reshape_safe = MaxSector;
mddev->reshape_position = MaxSector;
spin_unlock_irq(&conf->device_lock);
return ret;
@@ -4555,6 +4557,7 @@ static void end_reshape(struct r10conf *conf)
md_finish_reshape(conf->mddev);
smp_wmb();
conf->reshape_progress = MaxSector;
+ conf->reshape_safe = MaxSector;
spin_unlock_irq(&conf->device_lock);
/* read-ahead size must cover two whole stripes, which is
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 029/130] ALSA: hda - Add headset mic pin quirk for a Dell device
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (27 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 028/130] md/raid10: always set reshape_safe when initializing reshape_position Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 030/130] drm: Stop resetting connector state to unknown Kamal Mostafa
` (100 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: David Henningsson, Takashi Iwai, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: David Henningsson <david.henningsson@canonical.com>
commit cba59972a1191a0c1647a52fe745eed7a4b34b38 upstream.
Without this patch, the headset mic will not work on this machine.
BugLink: https://bugs.launchpad.net/bugs/1476987
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
sound/pci/hda/patch_realtek.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 270ee97..5cbdbe7 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -5134,6 +5134,17 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = {
{0x1d, 0x40700001},
{0x21, 0x02211030}),
SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
+ {0x12, 0x40000000},
+ {0x14, 0x90170130},
+ {0x17, 0x411111f0},
+ {0x18, 0x411111f0},
+ {0x19, 0x411111f0},
+ {0x1a, 0x411111f0},
+ {0x1b, 0x01014020},
+ {0x1d, 0x4054c029},
+ {0x1e, 0x411111f0},
+ {0x21, 0x0221103f}),
+ SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
{0x12, 0x90a60160},
{0x14, 0x90170120},
{0x17, 0x90170140},
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 030/130] drm: Stop resetting connector state to unknown
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (28 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 029/130] ALSA: hda - Add headset mic pin quirk for a Dell device Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 031/130] usb: dwc3: Reset the transfer resource index on SET_INTERFACE Kamal Mostafa
` (99 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Rui Matos, Julien Wajsberg, kuddel.mail, Lennart Poettering,
Daniel Vetter, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Daniel Vetter <daniel.vetter@ffwll.ch>
commit 5677d67ae3949f09f57357241b88222d49b8c782 upstream.
It's causing piles of issues since we've stopped forcing full detect
cycles in the sysfs interfaces with
commit c484f02d0f02fbbfc6decc945a69aae011041a27
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Fri Mar 6 12:36:42 2015 +0000
drm: Lighten sysfs connector 'status'
The original justification for this was that the hpd handlers could
use the unknown state as a hint to force a full detection. But current
i915 code isn't doing that any more, and no one else really uses reset
on resume. So instead just keep the old state around.
References: http://article.gmane.org/gmane.comp.freedesktop.xorg.drivers.intel/62584
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=100641
Cc: Rui Matos <tiagomatos@gmail.com>
Cc: Julien Wajsberg <felash@gmail.com>
Cc: kuddel.mail@gmx.de
Cc: Lennart Poettering <mzxreary@0pointer.de>
Acked-by: Rob Clark <robdclark@gmail.com>
Tested-by: Rui Tiago Cação Matos <tiagomatos@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/gpu/drm/drm_crtc.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index acb6e90..2d06f91 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -4821,12 +4821,9 @@ void drm_mode_config_reset(struct drm_device *dev)
if (encoder->funcs->reset)
encoder->funcs->reset(encoder);
- list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
- connector->status = connector_status_unknown;
-
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head)
if (connector->funcs->reset)
connector->funcs->reset(connector);
- }
}
EXPORT_SYMBOL(drm_mode_config_reset);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 031/130] usb: dwc3: Reset the transfer resource index on SET_INTERFACE
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (29 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 030/130] drm: Stop resetting connector state to unknown Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 032/130] usb: xhci: Bugfix for NULL pointer deference in xhci_endpoint_init() function Kamal Mostafa
` (98 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: John Youn, Felipe Balbi, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: John Youn <John.Youn@synopsys.com>
commit aebda618718157a69c0dc0adb978d69bc2b8723c upstream.
This fixes an issue introduced in commit b23c843992b6 (usb: dwc3:
gadget: fix DEPSTARTCFG for non-EP0 EPs) that made sure we would
only use DEPSTARTCFG once per SetConfig.
The trick is that we should use one DEPSTARTCFG per SetConfig *OR*
SetInterface. SetInterface was completely missed from the original
patch.
This problem became aparent after commit 76e838c9f776 (usb: dwc3:
gadget: return error if command sent to DEPCMD register fails)
added checking of the return status of device endpoint commands.
'Set Endpoint Transfer Resource' command was caught failing
occasionally. This is because the Transfer Resource
Index was not getting reset during a SET_INTERFACE request.
Finally, to fix the issue, was we have to do is make sure that
our start_config_issued flag gets reset whenever we receive a
SetInterface request.
To verify the problem (and its fix), all we have to do is run
test 9 from testusb with 'testusb -t 9 -s 2048 -a -c 5000'.
Tested-by: Huang Rui <ray.huang@amd.com>
Tested-by: Subbaraya Sundeep Bhatta <subbaraya.sundeep.bhatta@xilinx.com>
Fixes: b23c843992b6 (usb: dwc3: gadget: fix DEPSTARTCFG for non-EP0 EPs)
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/usb/dwc3/ep0.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 1bc77a3..98f3605 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -727,6 +727,10 @@ static int dwc3_ep0_std_request(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_ISOCH_DELAY");
ret = dwc3_ep0_set_isoch_delay(dwc, ctrl);
break;
+ case USB_REQ_SET_INTERFACE:
+ dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_INTERFACE");
+ dwc->start_config_issued = false;
+ /* Fall through */
default:
dwc3_trace(trace_dwc3_ep0, "Forwarding to gadget driver");
ret = dwc3_ep0_delegate_req(dwc, ctrl);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 032/130] usb: xhci: Bugfix for NULL pointer deference in xhci_endpoint_init() function
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (30 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 031/130] usb: dwc3: Reset the transfer resource index on SET_INTERFACE Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 033/130] xhci: Calculate old endpoints correctly on device reset Kamal Mostafa
` (97 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Aman Deep, Mathias Nyman, Greg Kroah-Hartman, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: AMAN DEEP <aman.deep@samsung.com>
commit 3496810663922617d4b706ef2780c279252ddd6a upstream.
virt_dev->num_cached_rings counts on freed ring and is not updated
correctly. In xhci_free_or_cache_endpoint_ring() function, the free ring
is added into cache and then num_rings_cache is incremented as below:
virt_dev->ring_cache[rings_cached] =
virt_dev->eps[ep_index].ring;
virt_dev->num_rings_cached++;
here, free ring pointer is added to a current index and then
index is incremented.
So current index always points to empty location in the ring cache.
For getting available free ring, current index should be decremented
first and then corresponding ring buffer value should be taken from ring
cache.
But In function xhci_endpoint_init(), the num_rings_cached index is
accessed before decrement.
virt_dev->eps[ep_index].new_ring =
virt_dev->ring_cache[virt_dev->num_rings_cached];
virt_dev->ring_cache[virt_dev->num_rings_cached] = NULL;
virt_dev->num_rings_cached--;
This is bug in manipulating the index of ring cache.
And it should be as below:
virt_dev->num_rings_cached--;
virt_dev->eps[ep_index].new_ring =
virt_dev->ring_cache[virt_dev->num_rings_cached];
virt_dev->ring_cache[virt_dev->num_rings_cached] = NULL;
Signed-off-by: Aman Deep <aman.deep@samsung.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/usb/host/xhci-mem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 5cb3d7a..a67018e 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1431,10 +1431,10 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
/* Attempt to use the ring cache */
if (virt_dev->num_rings_cached == 0)
return -ENOMEM;
+ virt_dev->num_rings_cached--;
virt_dev->eps[ep_index].new_ring =
virt_dev->ring_cache[virt_dev->num_rings_cached];
virt_dev->ring_cache[virt_dev->num_rings_cached] = NULL;
- virt_dev->num_rings_cached--;
xhci_reinit_cached_ring(xhci, virt_dev->eps[ep_index].new_ring,
1, type);
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 033/130] xhci: Calculate old endpoints correctly on device reset
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (31 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 032/130] usb: xhci: Bugfix for NULL pointer deference in xhci_endpoint_init() function Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 034/130] xhci: report U3 when link is in resume state Kamal Mostafa
` (96 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Brian Campbell, Mathias Nyman, Greg Kroah-Hartman, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Brian Campbell <bacam@z273.org.uk>
commit 326124a027abc9a7f43f72dc94f6f0f7a55b02b3 upstream.
When resetting a device the number of active TTs may need to be
corrected by xhci_update_tt_active_eps, but the number of old active
endpoints supplied to it was always zero, so the number of TTs and the
bandwidth reserved for them was not updated, and could rise
unnecessarily.
This affected systems using Intel's Patherpoint chipset, which rely on
software bandwidth checking. For example, a Lenovo X230 would lose the
ability to use ports on the docking station after enough suspend/resume
cycles because the bandwidth calculated would rise with every cycle when
a suitable device is attached.
The correct number of active endpoints is calculated in the same way as
in xhci_reserve_bandwidth.
Signed-off-by: Brian Campbell <bacam@z273.org.uk>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/usb/host/xhci.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index ee1cc0f..f2194a0 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -3457,6 +3457,9 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev)
return -EINVAL;
}
+ if (virt_dev->tt_info)
+ old_active_eps = virt_dev->tt_info->active_eps;
+
if (virt_dev->udev != udev) {
/* If the virt_dev and the udev does not match, this virt_dev
* may belong to another udev.
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 034/130] xhci: report U3 when link is in resume state
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (32 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 033/130] xhci: Calculate old endpoints correctly on device reset Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 035/130] xhci: prevent bus_suspend if SS port resuming in phase 1 Kamal Mostafa
` (95 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Zhuang Jin Can, Mathias Nyman, Greg Kroah-Hartman, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhuang Jin Can <jin.can.zhuang@intel.com>
commit 243292a2ad3dc365849b820a64868927168894ac upstream.
xhci_hub_report_usb3_link_state() returns pls as U0 when the link
is in resume state, and this causes usb core to think the link is in
U0 while actually it's in resume state. When usb core transfers
control request on the link, it fails with TRB error as the link
is not ready for transfer.
To fix the issue, report U3 when the link is in resume state, thus
usb core knows the link it's not ready for transfer.
Signed-off-by: Zhuang Jin Can <jin.can.zhuang@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/usb/host/xhci-hub.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 0827d7c..9e71c588 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -484,10 +484,13 @@ static void xhci_hub_report_usb3_link_state(struct xhci_hcd *xhci,
u32 pls = status_reg & PORT_PLS_MASK;
/* resume state is a xHCI internal state.
- * Do not report it to usb core.
+ * Do not report it to usb core, instead, pretend to be U3,
+ * thus usb core knows it's not ready for transfer
*/
- if (pls == XDEV_RESUME)
+ if (pls == XDEV_RESUME) {
+ *status |= USB_SS_PORT_LS_U3;
return;
+ }
/* When the CAS bit is set then warm reset
* should be performed on port
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 035/130] xhci: prevent bus_suspend if SS port resuming in phase 1
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (33 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 034/130] xhci: report U3 when link is in resume state Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 036/130] xhci: do not report PLC when link is in internal resume state Kamal Mostafa
` (94 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Zhuang Jin Can, Mathias Nyman, Greg Kroah-Hartman, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhuang Jin Can <jin.can.zhuang@intel.com>
commit fac4271d1126c45ceaceb7f4a336317b771eb121 upstream.
When the link is just waken, it's in Resume state, and driver sets PLS to
U0. This refers to Phase 1. Phase 2 refers to when the link has completed
the transition from Resume state to U0.
With the fix of xhci: report U3 when link is in resume state, it also
exposes an issue that usb3 roothub and controller can suspend right
after phase 1, and this causes a hard hang in controller.
To fix the issue, we need to prevent usb3 bus suspend if any port is
resuming in phase 1.
[merge separate USB2 and USB3 port resume checking to one -Mathias]
Signed-off-by: Zhuang Jin Can <jin.can.zhuang@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/usb/host/xhci-hub.c | 6 +++---
drivers/usb/host/xhci-ring.c | 3 +++
drivers/usb/host/xhci.h | 1 +
3 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 9e71c588..1cada6a 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -1123,10 +1123,10 @@ int xhci_bus_suspend(struct usb_hcd *hcd)
spin_lock_irqsave(&xhci->lock, flags);
if (hcd->self.root_hub->do_remote_wakeup) {
- if (bus_state->resuming_ports) {
+ if (bus_state->resuming_ports || /* USB2 */
+ bus_state->port_remote_wakeup) { /* USB3 */
spin_unlock_irqrestore(&xhci->lock, flags);
- xhci_dbg(xhci, "suspend failed because "
- "a port is resuming\n");
+ xhci_dbg(xhci, "suspend failed because a port is resuming\n");
return -EBUSY;
}
}
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 861a810..ea19ba3 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -1546,6 +1546,9 @@ static void handle_port_status(struct xhci_hcd *xhci,
usb_hcd_resume_root_hub(hcd);
}
+ if (hcd->speed == HCD_USB3 && (temp & PORT_PLS_MASK) == XDEV_INACTIVE)
+ bus_state->port_remote_wakeup &= ~(1 << faked_port_index);
+
if ((temp & PORT_PLC) && (temp & PORT_PLS_MASK) == XDEV_RESUME) {
xhci_dbg(xhci, "port resume event for port %d\n", port_id);
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 35a1eaf..75281ba 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -285,6 +285,7 @@ struct xhci_op_regs {
#define XDEV_U0 (0x0 << 5)
#define XDEV_U2 (0x2 << 5)
#define XDEV_U3 (0x3 << 5)
+#define XDEV_INACTIVE (0x6 << 5)
#define XDEV_RESUME (0xf << 5)
/* true: port has power (see HCC_PPC) */
#define PORT_POWER (1 << 9)
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 036/130] xhci: do not report PLC when link is in internal resume state
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (34 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 035/130] xhci: prevent bus_suspend if SS port resuming in phase 1 Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 037/130] usb: core: lpm: set lpm_capable for root hub device Kamal Mostafa
` (93 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Zhuang Jin Can, Mathias Nyman, Greg Kroah-Hartman, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhuang Jin Can <jin.can.zhuang@intel.com>
commit aca3a0489ac019b58cf32794d5362bb284cb9b94 upstream.
Port link change with port in resume state should not be
reported to usbcore, as this is an internal state to be
handled by xhci driver. Reporting PLC to usbcore may
cause usbcore clearing PLC first and port change event irq
won't be generated.
Signed-off-by: Zhuang Jin Can <jin.can.zhuang@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/usb/host/xhci-hub.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 1cada6a..ee07ba4 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -591,7 +591,14 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd,
status |= USB_PORT_STAT_C_RESET << 16;
/* USB3.0 only */
if (hcd->speed == HCD_USB3) {
- if ((raw_port_status & PORT_PLC))
+ /* Port link change with port in resume state should not be
+ * reported to usbcore, as this is an internal state to be
+ * handled by xhci driver. Reporting PLC to usbcore may
+ * cause usbcore clearing PLC first and port change event
+ * irq won't be generated.
+ */
+ if ((raw_port_status & PORT_PLC) &&
+ (raw_port_status & PORT_PLS_MASK) != XDEV_RESUME)
status |= USB_PORT_STAT_C_LINK_STATE << 16;
if ((raw_port_status & PORT_WRC))
status |= USB_PORT_STAT_C_BH_RESET << 16;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 037/130] usb: core: lpm: set lpm_capable for root hub device
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (35 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 036/130] xhci: do not report PLC when link is in internal resume state Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 038/130] USB: OHCI: Fix race between ED unlink and URB submission Kamal Mostafa
` (92 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Lu Baolu, Greg Kroah-Hartman, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Lu Baolu <baolu.lu@linux.intel.com>
commit 2d2a316765d956bc5cb6bb367b2ec52ca59ab8e9 upstream.
Commit 25cd2882e2fc ("usb/xhci: Change how we indicate a host supports
Link PM.") removed the code to set lpm_capable for USB 3.0 super-speed
root hub. The intention of that change was to avoid touching usb core
internal field, a.k.a. lpm_capable, and let usb core to set it by
checking U1 and U2 exit latency values in the descriptor.
Usb core checks and sets lpm_capable in hub_port_init(). Unfortunately,
root hub is a special usb device as it has no parent. Hub_port_init()
will never be called for a root hub device. That means lpm_capable will
by no means be set for the root hub. As the result, lpm isn't functional
at all in Linux kernel.
This patch add the code to check and set lpm_capable when registering a
root hub device. It could be back-ported to kernels as old as v3.15,
that contains the Commit 25cd2882e2fc ("usb/xhci: Change how we indicate
a host supports Link PM.").
Reported-by: Kevin Strasser <kevin.strasser@linux.intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/usb/core/hcd.c | 7 +++++--
drivers/usb/core/hub.c | 2 +-
drivers/usb/core/usb.h | 1 +
3 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 45a915c..1c1385e 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1022,9 +1022,12 @@ static int register_root_hub(struct usb_hcd *hcd)
dev_name(&usb_dev->dev), retval);
return (retval < 0) ? retval : -EMSGSIZE;
}
- if (usb_dev->speed == USB_SPEED_SUPER) {
+
+ if (le16_to_cpu(usb_dev->descriptor.bcdUSB) >= 0x0201) {
retval = usb_get_bos_descriptor(usb_dev);
- if (retval < 0) {
+ if (!retval) {
+ usb_dev->lpm_capable = usb_device_supports_lpm(usb_dev);
+ } else if (usb_dev->speed == USB_SPEED_SUPER) {
mutex_unlock(&usb_bus_list_lock);
dev_dbg(parent_dev, "can't read %s bos descriptor %d\n",
dev_name(&usb_dev->dev), retval);
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 79d50b9..3445773 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -122,7 +122,7 @@ struct usb_hub *usb_hub_to_struct_hub(struct usb_device *hdev)
return usb_get_intfdata(hdev->actconfig->interface[0]);
}
-static int usb_device_supports_lpm(struct usb_device *udev)
+int usb_device_supports_lpm(struct usb_device *udev)
{
/* USB 2.1 (and greater) devices indicate LPM support through
* their USB 2.0 Extended Capabilities BOS descriptor.
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 7eb1e26..457255a 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -65,6 +65,7 @@ extern int usb_hub_init(void);
extern void usb_hub_cleanup(void);
extern int usb_major_init(void);
extern void usb_major_cleanup(void);
+extern int usb_device_supports_lpm(struct usb_device *udev);
#ifdef CONFIG_PM
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 038/130] USB: OHCI: Fix race between ED unlink and URB submission
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (36 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 037/130] usb: core: lpm: set lpm_capable for root hub device Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 039/130] usb-storage: ignore ZTE MF 823 card reader in mode 0x1225 Kamal Mostafa
` (91 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Alan Stern, Greg Kroah-Hartman, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Alan Stern <stern@rowland.harvard.edu>
commit 7d8021c967648accd1b78e5e1ddaad655cd2c61f upstream.
This patch fixes a bug introduced by commit 977dcfdc6031 ("USB: OHCI:
don't lose track of EDs when a controller dies"). The commit changed
ed_state from ED_UNLINK to ED_IDLE too early, before finish_urb() had
been called. The user-visible consequence is that the driver
occasionally crashes or locks up when an URB is submitted while
another URB for the same endpoint is being unlinked.
This patch moves the ED state change later, to the right place. The
drawback is that now we may unnecessarily execute some instructions
multiple times when a controller dies. Since controllers dying is an
exceptional occurrence, a little wasted time won't matter.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Heiko Przybyl <lil_tux@web.de>
Tested-by: Heiko Przybyl <lil_tux@web.de>
Fixes: 977dcfdc60311e7aa571cabf6f39c36dde13339e
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/usb/host/ohci-q.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c
index 1463c39..fe1d5fc 100644
--- a/drivers/usb/host/ohci-q.c
+++ b/drivers/usb/host/ohci-q.c
@@ -980,10 +980,6 @@ 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
*/
@@ -1011,12 +1007,10 @@ skip_ed:
}
/* ED's now officially unlinked, hc doesn't see */
- ed->state = ED_IDLE;
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
@@ -1087,6 +1081,7 @@ rescan_this:
if (list_empty(&ed->td_list)) {
*last = ed->ed_next;
ed->ed_next = NULL;
+ ed->state = ED_IDLE;
list_del(&ed->in_use_list);
} else if (ohci->rh_state == OHCI_RH_RUNNING) {
*last = ed->ed_next;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 039/130] usb-storage: ignore ZTE MF 823 card reader in mode 0x1225
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (37 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 038/130] USB: OHCI: Fix race between ED unlink and URB submission Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 040/130] blkcg: fix gendisk reference leak in blkg_conf_prep() Kamal Mostafa
` (90 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Oliver Neukum, Greg Kroah-Hartman, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Oliver Neukum <oneukum@suse.com>
commit 5fb2c782f451a4fb9c19c076e2c442839faf0f76 upstream.
This device automatically switches itself to another mode (0x1405)
unless the specific access pattern of Windows is followed in its
initial mode. That makes a dirty unmount of the internal storage
devices inevitable if they are mounted. So the card reader of
such a device should be ignored, lest an unclean removal become
inevitable.
This replaces an earlier patch that ignored all LUNs of this device.
That patch was overly broad.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Reviewed-by: Lars Melin <larsm17@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/usb/storage/unusual_devs.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index caf1888..87898ca 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -2065,6 +2065,18 @@ UNUSUAL_DEV( 0x1908, 0x3335, 0x0200, 0x0200,
USB_SC_DEVICE, USB_PR_DEVICE, NULL,
US_FL_NO_READ_DISC_INFO ),
+/* Reported by Oliver Neukum <oneukum@suse.com>
+ * This device morphes spontaneously into another device if the access
+ * pattern of Windows isn't followed. Thus writable media would be dirty
+ * if the initial instance is used. So the device is limited to its
+ * virtual CD.
+ * And yes, the concept that BCD goes up to 9 is not heeded */
+UNUSUAL_DEV( 0x19d2, 0x1225, 0x0000, 0xffff,
+ "ZTE,Incorporated",
+ "ZTE WCDMA Technologies MSM",
+ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+ US_FL_SINGLE_LUN ),
+
/* Reported by Sven Geggus <sven-usbst@geggus.net>
* This encrypted pen drive returns bogus data for the initial READ(10).
*/
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 040/130] blkcg: fix gendisk reference leak in blkg_conf_prep()
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (38 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 039/130] usb-storage: ignore ZTE MF 823 card reader in mode 0x1225 Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 041/130] mei: prevent unloading mei hw modules while the device is opened Kamal Mostafa
` (89 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Tejun Heo, Jens Axboe, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Tejun Heo <tj@kernel.org>
commit 5f6c2d2b7dbb541c1e922538c49fa04c494ae3d7 upstream.
When a blkcg configuration is targeted to a partition rather than a
whole device, blkg_conf_prep fails with -EINVAL; unfortunately, it
forgets to put the gendisk ref in that case. Fix it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
block/blk-cgroup.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 0ac817b..6817e28 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -716,8 +716,12 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
return -EINVAL;
disk = get_gendisk(MKDEV(major, minor), &part);
- if (!disk || part)
+ if (!disk)
return -EINVAL;
+ if (part) {
+ put_disk(disk);
+ return -EINVAL;
+ }
rcu_read_lock();
spin_lock_irq(disk->queue->queue_lock);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 041/130] mei: prevent unloading mei hw modules while the device is opened.
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (39 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 040/130] blkcg: fix gendisk reference leak in blkg_conf_prep() Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 042/130] iommu/vt-d: Fix VM domain ID leak Kamal Mostafa
` (88 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Tomas Winkler, Alexander Usyskin, Greg Kroah-Hartman,
Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Tomas Winkler <tomas.winkler@intel.com>
commit 154322f47376fed6ab1e4b350aa45fffa15a61aa upstream.
chrdev_open() increases reference counter on cdev->owner. Instead of
assigning the owner to mei subsystem, the owner has to be set to the
underlaying HW module (mei_me or mei_txe), so once the device is opened
the HW module cannot be unloaded.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/misc/mei/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index ae56ba6..f6b68e2 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -738,7 +738,7 @@ int mei_register(struct mei_device *dev, struct device *parent)
/* Fill in the data structures */
devno = MKDEV(MAJOR(mei_devt), dev->minor);
cdev_init(&dev->cdev, &mei_fops);
- dev->cdev.owner = mei_fops.owner;
+ dev->cdev.owner = parent->driver->owner;
/* Add the device */
ret = cdev_add(&dev->cdev, devno, 1);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 042/130] iommu/vt-d: Fix VM domain ID leak
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (40 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 041/130] mei: prevent unloading mei hw modules while the device is opened Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 043/130] tile: use free_bootmem_late() for initrd Kamal Mostafa
` (87 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Alex Williamson, Jiang Liu, Joerg Roedel, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Williamson <alex.williamson@redhat.com>
commit 46ebb7af7b93792de65e124e1ab8b89a108a41f2 upstream.
This continues the attempt to fix commit fb170fb4c548 ("iommu/vt-d:
Introduce helper functions to make code symmetric for readability").
The previous attempt in commit 71684406905f ("iommu/vt-d: Detach
domain *only* from attached iommus") overlooked the fact that
dmar_domain.iommu_bmp gets cleared for VM domains when devices are
detached:
intel_iommu_detach_device
domain_remove_one_dev_info
domain_detach_iommu
The domain is detached from the iommu, but the iommu is still attached
to the domain, for whatever reason. Thus when we get to domain_exit(),
we can't rely on iommu_bmp for VM domains to find the active iommus,
we must check them all. Without that, the corresponding bit in
intel_iommu.domain_ids doesn't get cleared and repeated VM domain
creation and destruction will run out of domain IDs. Meanwhile we
still can't call iommu_detach_domain() on arbitrary non-VM domains or
we risk clearing in-use domain IDs, as 71684406905f attempted to
address.
It's tempting to modify iommu_detach_domain() to test the domain
iommu_bmp, but the call ordering from domain_remove_one_dev_info()
prevents it being able to work as fb170fb4c548 seems to have intended.
Caching of unused VM domains on the iommu object seems to be the root
of the problem, but this code is far too fragile for that kind of
rework to be proposed for stable, so we simply revert this chunk to
its state prior to fb170fb4c548.
Fixes: fb170fb4c548 ("iommu/vt-d: Introduce helper functions to make
code symmetric for readability")
Fixes: 71684406905f ("iommu/vt-d: Detach domain *only* from attached
iommus")
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/iommu/intel-iommu.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 39b4dfd..0688303 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -1758,8 +1758,8 @@ static int domain_init(struct dmar_domain *domain, int guest_width)
static void domain_exit(struct dmar_domain *domain)
{
struct dmar_drhd_unit *drhd;
+ struct intel_iommu *iommu;
struct page *freelist = NULL;
- int i;
/* Domain 0 is reserved, so dont process it */
if (!domain)
@@ -1779,8 +1779,10 @@ static void domain_exit(struct dmar_domain *domain)
/* clear attached or cached domains */
rcu_read_lock();
- for_each_set_bit(i, domain->iommu_bmp, g_num_of_iommus)
- iommu_detach_domain(domain, g_iommus[i]);
+ for_each_active_iommu(iommu, drhd)
+ if (domain_type_is_vm(domain) ||
+ test_bit(iommu->seq_id, domain->iommu_bmp))
+ iommu_detach_domain(domain, iommu);
rcu_read_unlock();
dma_free_pagelist(freelist);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 043/130] tile: use free_bootmem_late() for initrd
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (41 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 042/130] iommu/vt-d: Fix VM domain ID leak Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 044/130] Input: usbtouchscreen - avoid unresponsive TSC-30 touch screen Kamal Mostafa
` (86 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Chris Metcalf, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Chris Metcalf <cmetcalf@ezchip.com>
commit 3f81d2447b37ac697b3c600039f2c6b628c06e21 upstream.
We were previously using free_bootmem() and just getting lucky
that nothing too bad happened.
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
arch/tile/kernel/setup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c
index 864eea6..55d5982 100644
--- a/arch/tile/kernel/setup.c
+++ b/arch/tile/kernel/setup.c
@@ -1139,7 +1139,7 @@ static void __init load_hv_initrd(void)
void __init free_initrd_mem(unsigned long begin, unsigned long end)
{
- free_bootmem(__pa(begin), end - begin);
+ free_bootmem_late(__pa(begin), end - begin);
}
static int __init setup_initrd(char *str)
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 044/130] Input: usbtouchscreen - avoid unresponsive TSC-30 touch screen
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (42 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 043/130] tile: use free_bootmem_late() for initrd Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 045/130] block: Do a full clone when splitting discard bios Kamal Mostafa
` (85 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Bernhard Bender, Dmitry Torokhov, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Bernhard Bender <bernhard.bender@bytecmed.com>
commit 968491709e5b1aaf429428814fff3d932fa90b60 upstream.
This patch fixes a problem in the usbtouchscreen driver for DMC TSC-30
touch screen. Due to a missing delay between the RESET and SET_RATE
commands, the touch screen may become unresponsive during system startup or
driver loading.
According to the DMC documentation, a delay is needed after the RESET
command to allow the chip to complete its internal initialization. As this
delay is not guaranteed, we had a system where the touch screen
occasionally did not send any touch data. There was no other indication of
the problem.
The patch fixes the problem by adding a 150ms delay between the RESET and
SET_RATE commands.
Suggested-by: Jakob Mustafa <jakob.mustafa@bytecmed.com>
Signed-off-by: Bernhard Bender <bernhard.bender@bytecmed.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/input/touchscreen/usbtouchscreen.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c
index a096633..c6f7e91 100644
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -625,6 +625,9 @@ static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
goto err_out;
}
+ /* TSC-25 data sheet specifies a delay after the RESET command */
+ msleep(150);
+
/* set coordinate output rate */
buf[0] = buf[1] = 0xFF;
ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 045/130] block: Do a full clone when splitting discard bios
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (43 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 044/130] Input: usbtouchscreen - avoid unresponsive TSC-30 touch screen Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 046/130] md/raid1: fix test for 'was read error from last working device' Kamal Mostafa
` (84 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Martin K. Petersen, Seunguk Shin, Jens Axboe, Kent Overstreet,
Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: "Martin K. Petersen" <martin.petersen@oracle.com>
commit f3f5da624e0a891c34d8cd513c57f1d9b0c7dadc upstream.
This fixes a data corruption bug when using discard on top of MD linear,
raid0 and raid10 personalities.
Commit 20d0189b1012 "block: Introduce new bio_split()" permits sharing
the bio_vec between the two resulting bios. That is fine for read/write
requests where the bio_vec is immutable. For discards, however, we need
to be able to attach a payload and update the bio_vec so the page can
get mapped to a scatterlist entry. Therefore the bio_vec can not be
shared when splitting discards and we must do a full clone.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reported-by: Seunguk Shin <seunguk.shin@samsung.com>
Tested-by: Seunguk Shin <seunguk.shin@samsung.com>
Cc: Seunguk Shin <seunguk.shin@samsung.com>
Cc: Jens Axboe <axboe@fb.com>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
block/bio.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/block/bio.c b/block/bio.c
index 471d738..dae3483 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -1858,8 +1858,9 @@ EXPORT_SYMBOL(bio_endio_nodec);
* Allocates and returns a new bio which represents @sectors from the start of
* @bio, and updates @bio to represent the remaining sectors.
*
- * The newly allocated bio will point to @bio's bi_io_vec; it is the caller's
- * responsibility to ensure that @bio is not freed before the split.
+ * Unless this is a discard request the newly allocated bio will point
+ * to @bio's bi_io_vec; it is the caller's responsibility to ensure that
+ * @bio is not freed before the split.
*/
struct bio *bio_split(struct bio *bio, int sectors,
gfp_t gfp, struct bio_set *bs)
@@ -1869,7 +1870,15 @@ struct bio *bio_split(struct bio *bio, int sectors,
BUG_ON(sectors <= 0);
BUG_ON(sectors >= bio_sectors(bio));
- split = bio_clone_fast(bio, gfp, bs);
+ /*
+ * Discards need a mutable bio_vec to accommodate the payload
+ * required by the DSM TRIM and UNMAP commands.
+ */
+ if (bio->bi_rw & REQ_DISCARD)
+ split = bio_clone_bioset(bio, gfp, bs);
+ else
+ split = bio_clone_fast(bio, gfp, bs);
+
if (!split)
return NULL;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 046/130] md/raid1: fix test for 'was read error from last working device'.
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (44 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 045/130] block: Do a full clone when splitting discard bios Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 047/130] mmc: omap_hsmmc: Fix DTO and DCRC handling Kamal Mostafa
` (83 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: NeilBrown, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: NeilBrown <neilb@suse.com>
commit 34cab6f42003cb06f48f86a86652984dec338ae9 upstream.
When we get a read error from the last working device, we don't
try to repair it, and don't fail the device. We simple report a
read error to the caller.
However the current test for 'is this the last working device' is
wrong.
When there is only one fully working device, it assumes that a
non-faulty device is that device. However a spare which is rebuilding
would be non-faulty but so not the only working device.
So change the test from "!Faulty" to "In_sync". If ->degraded says
there is only one fully working device and this device is in_sync,
this must be the one.
This bug has existed since we allowed read_balance to read from
a recovering spare in v3.0
Reported-and-tested-by: Alexander Lyakas <alex.bolshoy@gmail.com>
Fixes: 76073054c95b ("md/raid1: clean up read_balance.")
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/md/raid1.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 2f2f38f..8d9110f 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -336,7 +336,7 @@ static void raid1_end_read_request(struct bio *bio, int error)
spin_lock_irqsave(&conf->device_lock, flags);
if (r1_bio->mddev->degraded == conf->raid_disks ||
(r1_bio->mddev->degraded == conf->raid_disks-1 &&
- !test_bit(Faulty, &conf->mirrors[mirror].rdev->flags)))
+ test_bit(In_sync, &conf->mirrors[mirror].rdev->flags)))
uptodate = 1;
spin_unlock_irqrestore(&conf->device_lock, flags);
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 047/130] mmc: omap_hsmmc: Fix DTO and DCRC handling
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (45 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 046/130] md/raid1: fix test for 'was read error from last working device' Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 048/130] spi: imx: Fix small DMA transfers Kamal Mostafa
` (82 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Kishon Vijay Abraham I, Vignesh R, Ulf Hansson, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Kishon Vijay Abraham I <kishon@ti.com>
commit 408806f740497c5d71f9c305b3d6aad260ff186d upstream.
DTO/DCRC errors were not being informed to the mmc core since
commit ae4bf788ee9b ("mmc: omap_hsmmc: consolidate error report handling of
HSMMC IRQ"). This commit made sure 'end_trans' is never set on DTO/DCRC
errors. This is because after this commit 'host->data' is checked after
it has been cleared to NULL by omap_hsmmc_dma_cleanup().
Because 'end_trans' is never set, omap_hsmmc_xfer_done() is never invoked
making core layer not to be aware of DTO/DCRC errors. Because of this
any command invoked after DTO/DCRC error leads to a hang.
Fix this by checking for 'host->data' before it is actually cleared.
Fixes: ae4bf788ee9b ("mmc: omap_hsmmc: consolidate error report handling of
HSMMC IRQ")
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/mmc/host/omap_hsmmc.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 7c71dcd..3357c83 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1129,6 +1129,10 @@ static void omap_hsmmc_do_irq(struct omap_hsmmc_host *host, int status)
if (status & (CTO_EN | CCRC_EN))
end_cmd = 1;
+ if (host->data || host->response_busy) {
+ end_trans = !end_cmd;
+ host->response_busy = 0;
+ }
if (status & (CTO_EN | DTO_EN))
hsmmc_command_incomplete(host, -ETIMEDOUT, end_cmd);
else if (status & (CCRC_EN | DCRC_EN))
@@ -1148,10 +1152,6 @@ static void omap_hsmmc_do_irq(struct omap_hsmmc_host *host, int status)
}
dev_dbg(mmc_dev(host->mmc), "AC12 err: 0x%x\n", ac12);
}
- if (host->data || host->response_busy) {
- end_trans = !end_cmd;
- host->response_busy = 0;
- }
}
OMAP_HSMMC_WRITE(host->base, STAT, status);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 048/130] spi: imx: Fix small DMA transfers
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (46 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 047/130] mmc: omap_hsmmc: Fix DTO and DCRC handling Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 049/130] ftrace: Fix breakage of set_ftrace_pid Kamal Mostafa
` (81 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Sascha Hauer, Mark Brown, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Sascha Hauer <s.hauer@pengutronix.de>
commit f6ee9b582d2db652497b73c1f117591dfb6d3a90 upstream.
DMA transfers must be greater than the watermark level size. spi_imx->rx_wml
and spi_imx->tx_wml contain the watermark level in 32bit words whereas struct
spi_transfer contains the transfer len in bytes. Fix the check if DMA is
possible for a transfer accordingly. This fixes transfers with sizes between
33 and 128 bytes for which previously was claimed that DMA is possible.
Fixes: f62caccd12c17e4 (spi: spi-imx: add DMA support)
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/spi/spi-imx.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index 308c2d3..b9046f7 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -202,8 +202,9 @@ static bool spi_imx_can_dma(struct spi_master *master, struct spi_device *spi,
{
struct spi_imx_data *spi_imx = spi_master_get_devdata(master);
- if (spi_imx->dma_is_inited && (transfer->len > spi_imx->rx_wml)
- && (transfer->len > spi_imx->tx_wml))
+ if (spi_imx->dma_is_inited
+ && transfer->len > spi_imx->rx_wml * sizeof(u32)
+ && transfer->len > spi_imx->tx_wml * sizeof(u32))
return true;
return false;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 049/130] ftrace: Fix breakage of set_ftrace_pid
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (47 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 048/130] spi: imx: Fix small DMA transfers Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 050/130] isdn/gigaset: reset tty->receive_room when attaching ser_gigaset Kamal Mostafa
` (80 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Steven Rostedt, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: "Steven Rostedt (Red Hat)" <rostedt@goodmis.org>
commit e3eea1404f5ff7a2ceb7b5e7ba412a6fd94f2935 upstream.
Commit 4104d326b670 ("ftrace: Remove global function list and call function
directly") simplified the ftrace code by removing the global_ops list with a
new design. But this cleanup also broke the filtering of PIDs that are added
to the set_ftrace_pid file.
Add back the proper hooks to have pid filtering working once again.
Reported-by: Matt Fleming <matt@console-pimps.org>
Reported-by: Richard Weinberger <richard.weinberger@gmail.com>
Tested-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
include/linux/ftrace.h | 3 +++
kernel/trace/ftrace.c | 52 +++++++++++++++++++++++++++++++++-----------------
2 files changed, 37 insertions(+), 18 deletions(-)
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 1da6029..6cd8c0e 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -116,6 +116,7 @@ ftrace_func_t ftrace_ops_get_func(struct ftrace_ops *ops);
* SAVE_REGS. If another ops with this flag set is already registered
* for any of the functions that this ops will be registered for, then
* this ops will fail to register or set_filter_ip.
+ * PID - Is affected by set_ftrace_pid (allows filtering on those pids)
*/
enum {
FTRACE_OPS_FL_ENABLED = 1 << 0,
@@ -132,6 +133,7 @@ enum {
FTRACE_OPS_FL_MODIFYING = 1 << 11,
FTRACE_OPS_FL_ALLOC_TRAMP = 1 << 12,
FTRACE_OPS_FL_IPMODIFY = 1 << 13,
+ FTRACE_OPS_FL_PID = 1 << 14,
};
#ifdef CONFIG_DYNAMIC_FTRACE
@@ -159,6 +161,7 @@ struct ftrace_ops {
struct ftrace_ops *next;
unsigned long flags;
void *private;
+ ftrace_func_t saved_func;
int __percpu *disabled;
#ifdef CONFIG_DYNAMIC_FTRACE
int nr_trampolines;
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index af5bffd..ac9516c 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -98,6 +98,13 @@ struct ftrace_pid {
struct pid *pid;
};
+static bool ftrace_pids_enabled(void)
+{
+ return !list_empty(&ftrace_pids);
+}
+
+static void ftrace_update_trampoline(struct ftrace_ops *ops);
+
/*
* ftrace_disabled is set when an anomaly is discovered.
* ftrace_disabled is much stronger than ftrace_enabled.
@@ -109,7 +116,6 @@ static DEFINE_MUTEX(ftrace_lock);
static struct ftrace_ops *ftrace_control_list __read_mostly = &ftrace_list_end;
static struct ftrace_ops *ftrace_ops_list __read_mostly = &ftrace_list_end;
ftrace_func_t ftrace_trace_function __read_mostly = ftrace_stub;
-ftrace_func_t ftrace_pid_function __read_mostly = ftrace_stub;
static struct ftrace_ops global_ops;
static struct ftrace_ops control_ops;
@@ -183,14 +189,7 @@ static void ftrace_pid_func(unsigned long ip, unsigned long parent_ip,
if (!test_tsk_trace_trace(current))
return;
- ftrace_pid_function(ip, parent_ip, op, regs);
-}
-
-static void set_ftrace_pid_function(ftrace_func_t func)
-{
- /* do not set ftrace_pid_function to itself! */
- if (func != ftrace_pid_func)
- ftrace_pid_function = func;
+ op->saved_func(ip, parent_ip, op, regs);
}
/**
@@ -202,7 +201,6 @@ static void set_ftrace_pid_function(ftrace_func_t func)
void clear_ftrace_function(void)
{
ftrace_trace_function = ftrace_stub;
- ftrace_pid_function = ftrace_stub;
}
static void control_ops_disable_all(struct ftrace_ops *ops)
@@ -423,6 +421,12 @@ static int __register_ftrace_function(struct ftrace_ops *ops)
} else
add_ftrace_ops(&ftrace_ops_list, ops);
+ /* Always save the function, and reset at unregistering */
+ ops->saved_func = ops->func;
+
+ if (ops->flags & FTRACE_OPS_FL_PID && ftrace_pids_enabled())
+ ops->func = ftrace_pid_func;
+
ftrace_update_trampoline(ops);
if (ftrace_enabled)
@@ -450,15 +454,28 @@ static int __unregister_ftrace_function(struct ftrace_ops *ops)
if (ftrace_enabled)
update_ftrace_function();
+ ops->func = ops->saved_func;
+
return 0;
}
static void ftrace_update_pid_func(void)
{
+ bool enabled = ftrace_pids_enabled();
+ struct ftrace_ops *op;
+
/* Only do something if we are tracing something */
if (ftrace_trace_function == ftrace_stub)
return;
+ do_for_each_ftrace_op(op, ftrace_ops_list) {
+ if (op->flags & FTRACE_OPS_FL_PID) {
+ op->func = enabled ? ftrace_pid_func :
+ op->saved_func;
+ ftrace_update_trampoline(op);
+ }
+ } while_for_each_ftrace_op(op);
+
update_ftrace_function();
}
@@ -1120,7 +1137,8 @@ static struct ftrace_ops global_ops = {
.local_hash.filter_hash = EMPTY_HASH,
INIT_OPS_HASH(global_ops)
.flags = FTRACE_OPS_FL_RECURSION_SAFE |
- FTRACE_OPS_FL_INITIALIZED,
+ FTRACE_OPS_FL_INITIALIZED |
+ FTRACE_OPS_FL_PID,
};
/*
@@ -5010,7 +5028,9 @@ static void ftrace_update_trampoline(struct ftrace_ops *ops)
static struct ftrace_ops global_ops = {
.func = ftrace_stub,
- .flags = FTRACE_OPS_FL_RECURSION_SAFE | FTRACE_OPS_FL_INITIALIZED,
+ .flags = FTRACE_OPS_FL_RECURSION_SAFE |
+ FTRACE_OPS_FL_INITIALIZED |
+ FTRACE_OPS_FL_PID,
};
static int __init ftrace_nodyn_init(void)
@@ -5067,11 +5087,6 @@ void ftrace_init_array_ops(struct trace_array *tr, ftrace_func_t func)
if (WARN_ON(tr->ops->func != ftrace_stub))
printk("ftrace ops had %pS for function\n",
tr->ops->func);
- /* Only the top level instance does pid tracing */
- if (!list_empty(&ftrace_pids)) {
- set_ftrace_pid_function(func);
- func = ftrace_pid_func;
- }
}
tr->ops->func = func;
tr->ops->private = tr;
@@ -5365,7 +5380,7 @@ static void *fpid_start(struct seq_file *m, loff_t *pos)
{
mutex_lock(&ftrace_lock);
- if (list_empty(&ftrace_pids) && (!*pos))
+ if (!ftrace_pids_enabled() && (!*pos))
return (void *) 1;
return seq_list_start(&ftrace_pids, *pos);
@@ -5604,6 +5619,7 @@ static struct ftrace_ops graph_ops = {
.func = ftrace_stub,
.flags = FTRACE_OPS_FL_RECURSION_SAFE |
FTRACE_OPS_FL_INITIALIZED |
+ FTRACE_OPS_FL_PID |
FTRACE_OPS_FL_STUB,
#ifdef FTRACE_GRAPH_TRAMP_ADDR
.trampoline = FTRACE_GRAPH_TRAMP_ADDR,
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 050/130] isdn/gigaset: reset tty->receive_room when attaching ser_gigaset
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (48 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 049/130] ftrace: Fix breakage of set_ftrace_pid Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 051/130] sched: cls_bpf: fix panic on filter replace Kamal Mostafa
` (79 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Tilman Schmidt, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Tilman Schmidt <tilman@imap.cc>
commit fd98e9419d8d622a4de91f76b306af6aa627aa9c upstream.
Commit 79901317ce80 ("n_tty: Don't flush buffer when closing ldisc"),
first merged in kernel release 3.10, caused the following regression
in the Gigaset M101 driver:
Before that commit, when closing the N_TTY line discipline in
preparation to switching to N_GIGASET_M101, receive_room would be
reset to a non-zero value by the call to n_tty_flush_buffer() in
n_tty's close method. With the removal of that call, receive_room
might be left at zero, blocking data reception on the serial line.
The present patch fixes that regression by setting receive_room
to an appropriate value in the ldisc open method.
Fixes: 79901317ce80 ("n_tty: Don't flush buffer when closing ldisc")
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/isdn/gigaset/ser-gigaset.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/isdn/gigaset/ser-gigaset.c b/drivers/isdn/gigaset/ser-gigaset.c
index 8c91fd5..3ac9c41 100644
--- a/drivers/isdn/gigaset/ser-gigaset.c
+++ b/drivers/isdn/gigaset/ser-gigaset.c
@@ -524,9 +524,18 @@ gigaset_tty_open(struct tty_struct *tty)
cs->hw.ser->tty = tty;
atomic_set(&cs->hw.ser->refcnt, 1);
init_completion(&cs->hw.ser->dead_cmp);
-
tty->disc_data = cs;
+ /* Set the amount of data we're willing to receive per call
+ * from the hardware driver to half of the input buffer size
+ * to leave some reserve.
+ * Note: We don't do flow control towards the hardware driver.
+ * If more data is received than will fit into the input buffer,
+ * it will be dropped and an error will be logged. This should
+ * never happen as the device is slow and the buffer size ample.
+ */
+ tty->receive_room = RBUFSIZE/2;
+
/* OK.. Initialization of the datastructures and the HW is done.. Now
* startup system and notify the LL that we are ready to run
*/
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 051/130] sched: cls_bpf: fix panic on filter replace
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (49 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 050/130] isdn/gigaset: reset tty->receive_room when attaching ser_gigaset Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 052/130] net_sched: fix a use-after-free in sfq Kamal Mostafa
` (78 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Daniel Borkmann, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Daniel Borkmann <daniel@iogearbox.net>
commit f6bfc46da6292b630ba389592123f0dd02066172 upstream.
The following test case causes a NULL pointer dereference in cls_bpf:
FOO="1,6 0 0 4294967295,"
tc filter add dev foo parent 1: bpf bytecode "$FOO" flowid 1:1 action ok
tc filter replace dev foo parent 1: pref 49152 handle 0x1 \
bpf bytecode "$FOO" flowid 1:1 action drop
The problem is that commit 1f947bf151e9 ("net: sched: rcu'ify cls_bpf")
accidentally swapped the arguments of list_replace_rcu(), the old
element needs to be the first argument and the new element the second.
Fixes: 1f947bf151e9 ("net: sched: rcu'ify cls_bpf")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/sched/cls_bpf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/sched/cls_bpf.c b/net/sched/cls_bpf.c
index f59adf8..7ef71a2 100644
--- a/net/sched/cls_bpf.c
+++ b/net/sched/cls_bpf.c
@@ -282,7 +282,7 @@ static int cls_bpf_change(struct net *net, struct sk_buff *in_skb,
goto errout;
if (oldprog) {
- list_replace_rcu(&prog->link, &oldprog->link);
+ list_replace_rcu(&oldprog->link, &prog->link);
tcf_unbind_filter(tp, &oldprog->res);
call_rcu(&oldprog->rcu, __cls_bpf_delete_prog);
} else {
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 052/130] net_sched: fix a use-after-free in sfq
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (50 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 051/130] sched: cls_bpf: fix panic on filter replace Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 053/130] serial: core: Fix crashes while echoing when closing Kamal Mostafa
` (77 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: John Fastabend, Cong Wang, Cong Wang, David S. Miller,
Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: WANG Cong <xiyou.wangcong@gmail.com>
commit e8d092aafd9e68c04d7b468e95ff7a617998a796 upstream.
Fixes: 25331d6ce42b ("net: sched: implement qstat helper routines")
Cc: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/sched/sch_sfq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
index b877140..0f65ba4 100644
--- a/net/sched/sch_sfq.c
+++ b/net/sched/sch_sfq.c
@@ -329,10 +329,10 @@ drop:
len = qdisc_pkt_len(skb);
slot->backlog -= len;
sfq_dec(q, x);
- kfree_skb(skb);
sch->q.qlen--;
qdisc_qstats_drop(sch);
qdisc_qstats_backlog_dec(sch, skb);
+ kfree_skb(skb);
return len;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 053/130] serial: core: Fix crashes while echoing when closing
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (51 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 052/130] net_sched: fix a use-after-free in sfq Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 054/130] mmc: sdhci-pxav3: fix platform_data is not initialized Kamal Mostafa
` (76 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Peter Hurley, Greg Kroah-Hartman, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Peter Hurley <peter@hurleysoftware.com>
commit e144c58cad6667876173dd76977e9e6557e34941 upstream.
While closing, new rx data may be received after the input buffers
have been flushed but before stop_rx() halts receiving [1]. The
new data might not be processed by flush_to_ldisc() until after
uart_shutdown() and normal input processing is re-enabled (ie.,
tty->closing = 0). The race is outlined below:
CPU 0 | CPU 1
|
uart_close() |
tty_port_close_start() |
tty->closing = 1 |
tty_ldisc_flush() |
| => IRQ
| while (LSR & data ready)
| uart_insert_char()
| tty_flip_buffer_push()
| <= EOI
stop_rx() | .
uart_shutdown() | .
free xmit.buf | .
tty_port_tty_set(NULL) | .
tty->closing = 0 | .
| flush_to_ldisc()
| n_tty_receive_buf_common()
| __receive_buf()
| ...
| commit_echoes()
| uart_flush_chars()
| __uart_start()
| ** OOPS on port.tty deref **
tty_ldisc_flush() |
Input processing must be prevented from echoing (tty->closing = 1)
until _after_ the input buffers have been flushed again at the end
of uart_close().
[1] In fact, some input may actually be buffered _after_ stop_rx()
since the rx interrupt may have already triggered but not yet been
handled when stop_rx() disables rx interrupts.
Fixes: 2e758910832d ("serial: core: Flush ldisc after dropping port
mutex in uart_close()")
Reported-by: Robert Elliott <elliott@hp.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/tty/serial/serial_core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 984605b..86f6d8b 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1429,7 +1429,7 @@ static void uart_close(struct tty_struct *tty, struct file *filp)
mutex_lock(&port->mutex);
uart_shutdown(tty, state);
tty_port_tty_set(port, NULL);
- tty->closing = 0;
+
spin_lock_irqsave(&port->lock, flags);
if (port->blocked_open) {
@@ -1455,6 +1455,7 @@ static void uart_close(struct tty_struct *tty, struct file *filp)
mutex_unlock(&port->mutex);
tty_ldisc_flush(tty);
+ tty->closing = 0;
}
static void uart_wait_until_sent(struct tty_struct *tty, int timeout)
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 054/130] mmc: sdhci-pxav3: fix platform_data is not initialized
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (52 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 053/130] serial: core: Fix crashes while echoing when closing Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 055/130] mmc: block: Add missing mmc_blk_put() in power_ro_lock_show() Kamal Mostafa
` (75 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Jingju Hou, Ulf Hansson, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Jingju Hou <houjingj@marvell.com>
commit 9cd76049f0d90ae241f5ad80e311489824527000 upstream.
pdev->dev.platform_data is not initialized if match is true in function
sdhci_pxav3_probe. Just local variable pdata is assigned the return value
from function pxav3_get_mmc_pdata().
static int sdhci_pxav3_probe(struct platform_device *pdev) {
struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data;
...
if (match) {
ret = mmc_of_parse(host->mmc);
if (ret)
goto err_of_parse;
sdhci_get_of_property(pdev);
pdata = pxav3_get_mmc_pdata(dev);
}
...
}
Signed-off-by: Jingju Hou <houjingj@marvell.com>
Fixes: b650352dd3df("mmc: sdhci-pxa: Add device tree support")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/mmc/host/sdhci-pxav3.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index e187f70..58c21b2 100644
--- a/drivers/mmc/host/sdhci-pxav3.c
+++ b/drivers/mmc/host/sdhci-pxav3.c
@@ -369,6 +369,7 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
goto err_of_parse;
sdhci_get_of_property(pdev);
pdata = pxav3_get_mmc_pdata(dev);
+ pdev->dev.platform_data = pdata;
} else if (pdata) {
/* on-chip device */
if (pdata->flags & PXA_FLAG_CARD_PERMANENT)
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 055/130] mmc: block: Add missing mmc_blk_put() in power_ro_lock_show()
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (53 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 054/130] mmc: sdhci-pxav3: fix platform_data is not initialized Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 056/130] mmc: sdhci-esdhc: Make 8BIT bus work Kamal Mostafa
` (74 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Tomas Winkler, Ulf Hansson, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Tomas Winkler <tomas.winkler@intel.com>
commit 9098f84cced870f54d8c410dd2444cfa61467fa0 upstream.
Enclosing mmc_blk_put() is missing in power_ro_lock_show() sysfs handler,
let's add it.
Fixes: add710eaa886 ("mmc: boot partition ro lock support")
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/mmc/card/block.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index c972b97..28fb2ed 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -208,6 +208,8 @@ static ssize_t power_ro_lock_show(struct device *dev,
ret = snprintf(buf, PAGE_SIZE, "%d\n", locked);
+ mmc_blk_put(md);
+
return ret;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 056/130] mmc: sdhci-esdhc: Make 8BIT bus work
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (54 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 055/130] mmc: block: Add missing mmc_blk_put() in power_ro_lock_show() Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 057/130] bonding: correctly handle bonding type change on enslave failure Kamal Mostafa
` (73 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Joakim Tjernlund, Ulf Hansson, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
commit 8e91125ff3f57f15c6568e2a6d32743b3f7815e4 upstream.
Support for 8BIT bus with was added some time ago to sdhci-esdhc but
then missed to remove the 8BIT from the reserved bit mask which made
8BIT non functional.
Fixes: 66b50a00992d ("mmc: esdhc: Add support for 8-bit bus width and..")
Signed-off-by: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/mmc/host/sdhci-esdhc.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci-esdhc.h
index 3497cfa..a870c42 100644
--- a/drivers/mmc/host/sdhci-esdhc.h
+++ b/drivers/mmc/host/sdhci-esdhc.h
@@ -45,6 +45,6 @@
#define ESDHC_DMA_SYSCTL 0x40c
#define ESDHC_DMA_SNOOP 0x00000040
-#define ESDHC_HOST_CONTROL_RES 0x05
+#define ESDHC_HOST_CONTROL_RES 0x01
#endif /* _DRIVERS_MMC_SDHCI_ESDHC_H */
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 057/130] bonding: correctly handle bonding type change on enslave failure
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (55 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 056/130] mmc: sdhci-esdhc: Make 8BIT bus work Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 058/130] mmc: sdhci check parameters before call dma_free_coherent Kamal Mostafa
` (72 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Nikolay Aleksandrov, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
commit 7d5cd2ce5292b45e555de776cb9e72975a07460d upstream.
If the bond is enslaving a device with different type it will be setup
by it, but if after being setup the enslave fails the bond doesn't
switch back its type and also keeps pointers to foreign structures that can
be long gone. Thus revert back any type changes if the enslave failed and
the bond had to change its type.
Example:
Before patch:
$ echo lo > bond0/bonding/slaves
-bash: echo: write error: Cannot assign requested address
$ ip l sh bond0
20: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN
mode DEFAULT group default
link/loopback 16:54:78:34:bd:41 brd 00:00:00:00:00:00
$ echo +eth1 > bond0/bonding/slaves
$ ip l sh bond0
20: bond0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode
DEFAULT group default qlen 1000
link/ether 52:54:00:3f:47:69 brd ff:ff:ff:ff:ff:ff
(notice the MASTER flag is gone)
After patch:
$ echo lo > bond0/bonding/slaves
-bash: echo: write error: Cannot assign requested address
$ ip l sh bond0
21: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN
mode DEFAULT group default qlen 1000
link/ether 6e:66:94:f6:07:fc brd ff:ff:ff:ff:ff:ff
$ echo +eth1 > bond0/bonding/slaves
$ ip l sh bond0
21: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN
mode DEFAULT group default qlen 1000
link/ether 52:54:00:3f:47:69 brd ff:ff:ff:ff:ff:ff
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Fixes: e36b9d16c6a6 ("bonding: clean muticast addresses when device changes type")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/net/bonding/bond_main.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 68ad39a..19186bf 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1617,9 +1617,16 @@ err_free:
err_undo_flags:
/* Enslave of first slave has failed and we need to fix master's mac */
- if (!bond_has_slaves(bond) &&
- ether_addr_equal_64bits(bond_dev->dev_addr, slave_dev->dev_addr))
- eth_hw_addr_random(bond_dev);
+ if (!bond_has_slaves(bond)) {
+ if (ether_addr_equal_64bits(bond_dev->dev_addr,
+ slave_dev->dev_addr))
+ eth_hw_addr_random(bond_dev);
+ if (bond_dev->type != ARPHRD_ETHER) {
+ ether_setup(bond_dev);
+ bond_dev->flags |= IFF_MASTER;
+ bond_dev->priv_flags &= ~IFF_TX_SKB_SHARING;
+ }
+ }
return res;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 058/130] mmc: sdhci check parameters before call dma_free_coherent
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (56 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 057/130] bonding: correctly handle bonding type change on enslave failure Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 059/130] net: Clone skb before setting peeked flag Kamal Mostafa
` (71 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Peng Fan, Ulf Hansson, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Peng Fan <van.freenix@gmail.com>
commit 7ac020366b0a436d726408841160b5dc32c19214 upstream.
We should not call dma_free_coherent if host->adma_table is NULL,
otherwise may trigger panic.
Fixes: d1e49f77d7c7 ("mmc: sdhci: convert ADMA descriptors to a...")
Signed-off-by: Peng Fan <van.freenix@gmail.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/mmc/host/sdhci.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 5c8b463..afb477a 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2971,8 +2971,11 @@ int sdhci_add_host(struct sdhci_host *host)
GFP_KERNEL);
host->align_buffer = kmalloc(host->align_buffer_sz, GFP_KERNEL);
if (!host->adma_table || !host->align_buffer) {
- dma_free_coherent(mmc_dev(mmc), host->adma_table_sz,
- host->adma_table, host->adma_addr);
+ if (host->adma_table)
+ dma_free_coherent(mmc_dev(mmc),
+ host->adma_table_sz,
+ host->adma_table,
+ host->adma_addr);
kfree(host->align_buffer);
pr_warn("%s: Unable to allocate ADMA buffers - falling back to standard DMA\n",
mmc_hostname(mmc));
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 059/130] net: Clone skb before setting peeked flag
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (57 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 058/130] mmc: sdhci check parameters before call dma_free_coherent Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 060/130] mtd: nand: Fix NAND_USE_BOUNCE_BUFFER flag conflict Kamal Mostafa
` (70 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Herbert Xu, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Herbert Xu <herbert@gondor.apana.org.au>
commit 738ac1ebb96d02e0d23bc320302a6ea94c612dec upstream.
Shared skbs must not be modified and this is crucial for broadcast
and/or multicast paths where we use it as an optimisation to avoid
unnecessary cloning.
The function skb_recv_datagram breaks this rule by setting peeked
without cloning the skb first. This causes funky races which leads
to double-free.
This patch fixes this by cloning the skb and replacing the skb
in the list when setting skb->peeked.
Fixes: a59322be07c9 ("[UDP]: Only increment counter on first peek/recv")
Reported-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/core/datagram.c | 41 ++++++++++++++++++++++++++++++++++++++---
1 file changed, 38 insertions(+), 3 deletions(-)
diff --git a/net/core/datagram.c b/net/core/datagram.c
index df493d6..91dbcfa 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -131,6 +131,35 @@ out_noerr:
goto out;
}
+static int skb_set_peeked(struct sk_buff *skb)
+{
+ struct sk_buff *nskb;
+
+ if (skb->peeked)
+ return 0;
+
+ /* We have to unshare an skb before modifying it. */
+ if (!skb_shared(skb))
+ goto done;
+
+ nskb = skb_clone(skb, GFP_ATOMIC);
+ if (!nskb)
+ return -ENOMEM;
+
+ skb->prev->next = nskb;
+ skb->next->prev = nskb;
+ nskb->prev = skb->prev;
+ nskb->next = skb->next;
+
+ consume_skb(skb);
+ skb = nskb;
+
+done:
+ skb->peeked = 1;
+
+ return 0;
+}
+
/**
* __skb_recv_datagram - Receive a datagram skbuff
* @sk: socket
@@ -165,7 +194,9 @@ out_noerr:
struct sk_buff *__skb_recv_datagram(struct sock *sk, unsigned int flags,
int *peeked, int *off, int *err)
{
+ struct sk_buff_head *queue = &sk->sk_receive_queue;
struct sk_buff *skb, *last;
+ unsigned long cpu_flags;
long timeo;
/*
* Caller is allowed not to check sk->sk_err before skb_recv_datagram()
@@ -184,8 +215,6 @@ struct sk_buff *__skb_recv_datagram(struct sock *sk, unsigned int flags,
* Look at current nfs client by the way...
* However, this function was correct in any case. 8)
*/
- unsigned long cpu_flags;
- struct sk_buff_head *queue = &sk->sk_receive_queue;
int _off = *off;
last = (struct sk_buff *)queue;
@@ -199,7 +228,11 @@ struct sk_buff *__skb_recv_datagram(struct sock *sk, unsigned int flags,
_off -= skb->len;
continue;
}
- skb->peeked = 1;
+
+ error = skb_set_peeked(skb);
+ if (error)
+ goto unlock_err;
+
atomic_inc(&skb->users);
} else
__skb_unlink(skb, queue);
@@ -223,6 +256,8 @@ struct sk_buff *__skb_recv_datagram(struct sock *sk, unsigned int flags,
return NULL;
+unlock_err:
+ spin_unlock_irqrestore(&queue->lock, cpu_flags);
no_packet:
*err = error;
return NULL;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 060/130] mtd: nand: Fix NAND_USE_BOUNCE_BUFFER flag conflict
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (58 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 059/130] net: Clone skb before setting peeked flag Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 061/130] bridge: mdb: fix double add notification Kamal Mostafa
` (69 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Kamal Dasu, Scott Wood, Brian Norris, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Scott Wood <scottwood@freescale.com>
commit 5f867db63473f32cce1b868e281ebd42a41f8fad upstream.
Commit 66507c7bc8895f0da6b ("mtd: nand: Add support to use nand_base
poi databuf as bounce buffer") added a flag NAND_USE_BOUNCE_BUFFER
using the same bit value as the existing NAND_BUSWIDTH_AUTO.
Cc: Kamal Dasu <kdasu.kdev@gmail.com>
Fixes: 66507c7bc8895f0da6b ("mtd: nand: Add support to use nand_base
poi databuf as bounce buffer")
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
include/linux/mtd/nand.h | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 3d4ea7e..12b75f3 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -176,17 +176,17 @@ typedef enum {
/* Chip may not exist, so silence any errors in scan */
#define NAND_SCAN_SILENT_NODEV 0x00040000
/*
- * This option could be defined by controller drivers to protect against
- * kmap'ed, vmalloc'ed highmem buffers being passed from upper layers
- */
-#define NAND_USE_BOUNCE_BUFFER 0x00080000
-/*
* Autodetect nand buswidth with readid/onfi.
* This suppose the driver will configure the hardware in 8 bits mode
* when calling nand_scan_ident, and update its configuration
* before calling nand_scan_tail.
*/
#define NAND_BUSWIDTH_AUTO 0x00080000
+/*
+ * This option could be defined by controller drivers to protect against
+ * kmap'ed, vmalloc'ed highmem buffers being passed from upper layers
+ */
+#define NAND_USE_BOUNCE_BUFFER 0x00100000
/* Options set by nand scan */
/* Nand scan has allocated controller struct */
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 061/130] bridge: mdb: fix double add notification
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (59 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 060/130] mtd: nand: Fix NAND_USE_BOUNCE_BUFFER flag conflict Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 062/130] usb: gadget: mv_udc_core: fix phy_regs I/O memory leak Kamal Mostafa
` (68 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Nikolay Aleksandrov, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
commit 5ebc784625ea68a9570d1f70557e7932988cd1b4 upstream.
Since the mdb add/del code was introduced there have been 2 br_mdb_notify
calls when doing br_mdb_add() resulting in 2 notifications on each add.
Example:
Command: bridge mdb add dev br0 port eth1 grp 239.0.0.1 permanent
Before patch:
root@debian:~# bridge monitor all
[MDB]dev br0 port eth1 grp 239.0.0.1 permanent
[MDB]dev br0 port eth1 grp 239.0.0.1 permanent
After patch:
root@debian:~# bridge monitor all
[MDB]dev br0 port eth1 grp 239.0.0.1 permanent
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Fixes: cfd567543590 ("bridge: add support of adding and deleting mdb entries")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/bridge/br_mdb.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index 4754f2d..f426da7 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -350,7 +350,6 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
if (state == MDB_TEMPORARY)
mod_timer(&p->timer, now + br->multicast_membership_interval);
- br_mdb_notify(br->dev, port, group, RTM_NEWMDB);
return 0;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 062/130] usb: gadget: mv_udc_core: fix phy_regs I/O memory leak
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (60 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 061/130] bridge: mdb: fix double add notification Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 063/130] net/xen-netback: off by one in BUG_ON() condition Kamal Mostafa
` (67 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Alexey Khoroshilov, Felipe Balbi, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexey Khoroshilov <khoroshilov@ispras.ru>
commit 53e20f2eb161fbe9eea28b54dccc870cec94eca2 upstream.
There was an omission in transition to devm_xxx resource handling.
iounmap(udc->phy_regs) were removed, but ioremap() was left
without devm_.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Fixes: 3517c31a8ece6 ("usb: gadget: mv_udc: use devm_xxx for probe")
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/usb/gadget/udc/mv_udc_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/udc/mv_udc_core.c b/drivers/usb/gadget/udc/mv_udc_core.c
index 253f3df..3778580 100644
--- a/drivers/usb/gadget/udc/mv_udc_core.c
+++ b/drivers/usb/gadget/udc/mv_udc_core.c
@@ -2170,7 +2170,7 @@ static int mv_udc_probe(struct platform_device *pdev)
return -ENODEV;
}
- udc->phy_regs = ioremap(r->start, resource_size(r));
+ udc->phy_regs = devm_ioremap(&pdev->dev, r->start, resource_size(r));
if (udc->phy_regs == NULL) {
dev_err(&pdev->dev, "failed to map phy I/O memory\n");
return -EBUSY;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 063/130] net/xen-netback: off by one in BUG_ON() condition
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (61 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 062/130] usb: gadget: mv_udc_core: fix phy_regs I/O memory leak Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 064/130] sched: cls_flow: fix panic on filter replace Kamal Mostafa
` (66 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Dan Carpenter, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Dan Carpenter <dan.carpenter@oracle.com>
commit 50c2e4dd6749725338621fff456b26d3a592259f upstream.
The > should be >=. I also added spaces around the '-' operations so
the code is a little more consistent and matches the condition better.
Fixes: f53c3fe8dad7 ('xen-netback: Introduce TX grant mapping')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/net/xen-netback/netback.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index c8ce701..409e296 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -1758,13 +1758,13 @@ static inline void xenvif_tx_dealloc_action(struct xenvif_queue *queue)
smp_rmb();
while (dc != dp) {
- BUG_ON(gop - queue->tx_unmap_ops > MAX_PENDING_REQS);
+ BUG_ON(gop - queue->tx_unmap_ops >= MAX_PENDING_REQS);
pending_idx =
queue->dealloc_ring[pending_index(dc++)];
- pending_idx_release[gop-queue->tx_unmap_ops] =
+ pending_idx_release[gop - queue->tx_unmap_ops] =
pending_idx;
- queue->pages_to_unmap[gop-queue->tx_unmap_ops] =
+ queue->pages_to_unmap[gop - queue->tx_unmap_ops] =
queue->mmap_pages[pending_idx];
gnttab_set_unmap_op(gop,
idx_to_kaddr(queue, pending_idx),
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 064/130] sched: cls_flow: fix panic on filter replace
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (62 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 063/130] net/xen-netback: off by one in BUG_ON() condition Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 065/130] ipvlan: use rcu_deference_bh() in ipvlan_queue_xmit() Kamal Mostafa
` (65 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Daniel Borkmann, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Daniel Borkmann <daniel@iogearbox.net>
commit 32b2f4b196b37695fdb42b31afcbc15399d6ef91 upstream.
The following test case causes a NULL pointer dereference in cls_flow:
tc filter add dev foo parent 1: handle 0x1 flow hash keys dst action ok
tc filter replace dev foo parent 1: pref 49152 handle 0x1 \
flow hash keys mark action drop
To be more precise, actually two different panics are fixed, the first
occurs because tcf_exts_init() is not called on the newly allocated
filter when we do a replace. And the second panic uncovered after that
happens since the arguments of list_replace_rcu() are swapped, the old
element needs to be the first argument and the new element the second.
Fixes: 70da9f0bf999 ("net: sched: cls_flow use RCU")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/sched/cls_flow.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
index 15d68f2..bca348a 100644
--- a/net/sched/cls_flow.c
+++ b/net/sched/cls_flow.c
@@ -419,6 +419,8 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
if (!fnew)
goto err2;
+ tcf_exts_init(&fnew->exts, TCA_FLOW_ACT, TCA_FLOW_POLICE);
+
fold = (struct flow_filter *)*arg;
if (fold) {
err = -EINVAL;
@@ -480,7 +482,6 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
fnew->mask = ~0U;
fnew->tp = tp;
get_random_bytes(&fnew->hashrnd, 4);
- tcf_exts_init(&fnew->exts, TCA_FLOW_ACT, TCA_FLOW_POLICE);
}
fnew->perturb_timer.function = flow_perturbation;
@@ -520,7 +521,7 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
if (*arg == 0)
list_add_tail_rcu(&fnew->list, &head->filters);
else
- list_replace_rcu(&fnew->list, &fold->list);
+ list_replace_rcu(&fold->list, &fnew->list);
*arg = (unsigned long)fnew;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 065/130] ipvlan: use rcu_deference_bh() in ipvlan_queue_xmit()
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (63 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 064/130] sched: cls_flow: fix panic on filter replace Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 066/130] inet: frags: fix defragmented packet's IP header for af_packet Kamal Mostafa
` (64 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Mahesh Bandewar, Cong Wang, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: WANG Cong <xiyou.wangcong@gmail.com>
commit 0fba37a3af03a7e74bf9e75473729adb98da49c3 upstream.
In tx path rcu_read_lock_bh() is held, so we need rcu_deference_bh().
This fixes the following warning:
===============================
[ INFO: suspicious RCU usage. ]
4.1.0-rc1+ #1007 Not tainted
-------------------------------
drivers/net/ipvlan/ipvlan.h:106 suspicious rcu_dereference_check() usage!
other info that might help us debug this:
rcu_scheduler_active = 1, debug_locks = 0
1 lock held by dhclient/1076:
#0: (rcu_read_lock_bh){......}, at: [<ffffffff817e8d84>] rcu_lock_acquire+0x0/0x26
stack backtrace:
CPU: 2 PID: 1076 Comm: dhclient Not tainted 4.1.0-rc1+ #1007
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
0000000000000001 ffff8800d381bac8 ffffffff81a4154f 000000003c1a3c19
ffff8800d4d0a690 ffff8800d381baf8 ffffffff810b849f ffff880117d41148
ffff880117d40000 ffff880117d40068 0000000000000156 ffff8800d381bb18
Call Trace:
[<ffffffff81a4154f>] dump_stack+0x4c/0x65
[<ffffffff810b849f>] lockdep_rcu_suspicious+0x107/0x110
[<ffffffff8165a522>] ipvlan_port_get_rcu+0x47/0x4e
[<ffffffff8165ad14>] ipvlan_queue_xmit+0x35/0x450
[<ffffffff817ea45d>] ? rcu_read_unlock+0x3e/0x5f
[<ffffffff810a20bf>] ? local_clock+0x19/0x22
[<ffffffff810b4781>] ? __lock_is_held+0x39/0x52
[<ffffffff8165b64c>] ipvlan_start_xmit+0x1b/0x44
[<ffffffff817edf7f>] dev_hard_start_xmit+0x2ae/0x467
[<ffffffff817ee642>] __dev_queue_xmit+0x50a/0x60c
[<ffffffff817ee7a7>] dev_queue_xmit_sk+0x13/0x15
[<ffffffff81997596>] dev_queue_xmit+0x10/0x12
[<ffffffff8199b41c>] packet_sendmsg+0xb6b/0xbdf
[<ffffffff810b5ea7>] ? mark_lock+0x2e/0x226
[<ffffffff810a1fcc>] ? sched_clock_cpu+0x9e/0xb7
[<ffffffff817d56f9>] sock_sendmsg_nosec+0x12/0x1d
[<ffffffff817d7257>] sock_sendmsg+0x29/0x2e
[<ffffffff817d72cc>] sock_write_iter+0x70/0x91
[<ffffffff81199563>] __vfs_write+0x7e/0xa7
[<ffffffff811996bc>] vfs_write+0x92/0xe8
[<ffffffff811997d7>] SyS_write+0x47/0x7e
[<ffffffff81a4d517>] system_call_fastpath+0x12/0x6f
Fixes: 2ad7bf363841 ("ipvlan: Initial check-in of the IPVLAN driver.")
Cc: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Mahesh Bandewar <maheshb@google.com>
Acked-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/net/ipvlan/ipvlan.h | 5 +++++
drivers/net/ipvlan/ipvlan_core.c | 2 +-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ipvlan/ipvlan.h b/drivers/net/ipvlan/ipvlan.h
index 2729f64..af4284b 100644
--- a/drivers/net/ipvlan/ipvlan.h
+++ b/drivers/net/ipvlan/ipvlan.h
@@ -102,6 +102,11 @@ static inline struct ipvl_port *ipvlan_port_get_rcu(const struct net_device *d)
return rcu_dereference(d->rx_handler_data);
}
+static inline struct ipvl_port *ipvlan_port_get_rcu_bh(const struct net_device *d)
+{
+ return rcu_dereference_bh(d->rx_handler_data);
+}
+
static inline struct ipvl_port *ipvlan_port_get_rtnl(const struct net_device *d)
{
return rtnl_dereference(d->rx_handler_data);
diff --git a/drivers/net/ipvlan/ipvlan_core.c b/drivers/net/ipvlan/ipvlan_core.c
index 2e19528..8df3268 100644
--- a/drivers/net/ipvlan/ipvlan_core.c
+++ b/drivers/net/ipvlan/ipvlan_core.c
@@ -495,7 +495,7 @@ static int ipvlan_xmit_mode_l2(struct sk_buff *skb, struct net_device *dev)
int ipvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct ipvl_dev *ipvlan = netdev_priv(dev);
- struct ipvl_port *port = ipvlan_port_get_rcu(ipvlan->phy_dev);
+ struct ipvl_port *port = ipvlan_port_get_rcu_bh(ipvlan->phy_dev);
if (!port)
goto out;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 066/130] inet: frags: fix defragmented packet's IP header for af_packet
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (64 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 065/130] ipvlan: use rcu_deference_bh() in ipvlan_queue_xmit() Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 067/130] bonding: fix destruction of bond with devices different from arphrd_ether Kamal Mostafa
` (63 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Edward Hyunkoo Jee, Eric Dumazet, Willem de Bruijn, Jerry Chu,
David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Edward Hyunkoo Jee <edjee@google.com>
[ Upstream commit 0848f6428ba3a2e42db124d41ac6f548655735bf ]
When ip_frag_queue() computes positions, it assumes that the passed
sk_buff does not contain L2 headers.
However, when PACKET_FANOUT_FLAG_DEFRAG is used, IP reassembly
functions can be called on outgoing packets that contain L2 headers.
Also, IPv4 checksum is not corrected after reassembly.
Fixes: 7736d33f4262 ("packet: Add pre-defragmentation support for ipv4 fanouts.")
Signed-off-by: Edward Hyunkoo Jee <edjee@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Cc: Jerry Chu <hkchu@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/ipv4/ip_fragment.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 145a50c..0f128f8 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -342,7 +342,7 @@ static int ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
ihl = ip_hdrlen(skb);
/* Determine the position of this fragment. */
- end = offset + skb->len - ihl;
+ end = offset + skb->len - skb_network_offset(skb) - ihl;
err = -EINVAL;
/* Is this the final fragment? */
@@ -372,7 +372,7 @@ static int ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
goto err;
err = -ENOMEM;
- if (pskb_pull(skb, ihl) == NULL)
+ if (!pskb_pull(skb, skb_network_offset(skb) + ihl))
goto err;
err = pskb_trim_rcsum(skb, end - offset);
@@ -612,6 +612,9 @@ static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev,
iph->frag_off = qp->q.max_size ? htons(IP_DF) : 0;
iph->tot_len = htons(len);
iph->tos |= ecn;
+
+ ip_send_check(iph);
+
IP_INC_STATS_BH(net, IPSTATS_MIB_REASMOKS);
qp->q.fragments = NULL;
qp->q.fragments_tail = NULL;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 067/130] bonding: fix destruction of bond with devices different from arphrd_ether
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (65 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 066/130] inet: frags: fix defragmented packet's IP header for af_packet Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 068/130] fq_codel: fix a use-after-free Kamal Mostafa
` (62 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Nikolay Aleksandrov, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
commit 06f6d1094aa0992432b1e2a0920b0ee86ccd83bf upstream.
When the bonding is being unloaded and the netdevice notifier is
unregistered it executes NETDEV_UNREGISTER for each device which should
remove the bond's proc entry but if the device enslaved is not of
ARPHRD_ETHER type and is in front of the bonding, it may execute
bond_release_and_destroy() first which would release the last slave and
destroy the bond device leaving the proc entry and thus we will get the
following error (with dynamic debug on for bond_netdev_event to see the
events order):
[ 908.963051] eql: event: 9
[ 908.963052] eql: IFF_SLAVE
[ 908.963054] eql: event: 2
[ 908.963056] eql: IFF_SLAVE
[ 908.963058] eql: event: 6
[ 908.963059] eql: IFF_SLAVE
[ 908.963110] bond0: Releasing active interface eql
[ 908.976168] bond0: Destroying bond bond0
[ 908.976266] bond0 (unregistering): Released all slaves
[ 908.984097] ------------[ cut here ]------------
[ 908.984107] WARNING: CPU: 0 PID: 1787 at fs/proc/generic.c:575
remove_proc_entry+0x112/0x160()
[ 908.984110] remove_proc_entry: removing non-empty directory
'net/bonding', leaking at least 'bond0'
[ 908.984111] Modules linked in: bonding(-) eql(O) 9p nfsd auth_rpcgss
oid_registry nfs_acl nfs lockd grace fscache sunrpc crct10dif_pclmul
crc32_pclmul crc32c_intel ghash_clmulni_intel ppdev qxl drm_kms_helper
snd_hda_codec_generic aesni_intel ttm aes_x86_64 glue_helper pcspkr lrw
gf128mul ablk_helper cryptd snd_hda_intel virtio_console snd_hda_codec
psmouse serio_raw snd_hwdep snd_hda_core 9pnet_virtio 9pnet evdev joydev
drm virtio_balloon snd_pcm snd_timer snd soundcore i2c_piix4 i2c_core
pvpanic acpi_cpufreq parport_pc parport processor thermal_sys button
autofs4 ext4 crc16 mbcache jbd2 hid_generic usbhid hid sg sr_mod cdrom
ata_generic virtio_blk virtio_net floppy ata_piix e1000 libata ehci_pci
virtio_pci scsi_mod uhci_hcd ehci_hcd virtio_ring virtio usbcore
usb_common [last unloaded: bonding]
[ 908.984168] CPU: 0 PID: 1787 Comm: rmmod Tainted: G W O
4.2.0-rc2+ #8
[ 908.984170] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 908.984172] 0000000000000000 ffffffff81732d41 ffffffff81525b34
ffff8800358dfda8
[ 908.984175] ffffffff8106c521 ffff88003595af78 ffff88003595af40
ffff88003e3a4280
[ 908.984178] ffffffffa058d040 0000000000000000 ffffffff8106c59a
ffffffff8172ebd0
[ 908.984181] Call Trace:
[ 908.984188] [<ffffffff81525b34>] ? dump_stack+0x40/0x50
[ 908.984193] [<ffffffff8106c521>] ? warn_slowpath_common+0x81/0xb0
[ 908.984196] [<ffffffff8106c59a>] ? warn_slowpath_fmt+0x4a/0x50
[ 908.984199] [<ffffffff81218352>] ? remove_proc_entry+0x112/0x160
[ 908.984205] [<ffffffffa05850e6>] ? bond_destroy_proc_dir+0x26/0x30
[bonding]
[ 908.984208] [<ffffffffa057540e>] ? bond_net_exit+0x8e/0xa0 [bonding]
[ 908.984217] [<ffffffff8142f407>] ? ops_exit_list.isra.4+0x37/0x70
[ 908.984225] [<ffffffff8142f52d>] ?
unregister_pernet_operations+0x8d/0xd0
[ 908.984228] [<ffffffff8142f58d>] ?
unregister_pernet_subsys+0x1d/0x30
[ 908.984232] [<ffffffffa0585269>] ? bonding_exit+0x23/0xdba [bonding]
[ 908.984236] [<ffffffff810e28ba>] ? SyS_delete_module+0x18a/0x250
[ 908.984241] [<ffffffff81086f99>] ? task_work_run+0x89/0xc0
[ 908.984244] [<ffffffff8152b732>] ?
entry_SYSCALL_64_fastpath+0x16/0x75
[ 908.984247] ---[ end trace 7c006ed4abbef24b ]---
Thus remove the proc entry manually if bond_release_and_destroy() is
used. Because of the checks in bond_remove_proc_entry() it's not a
problem for a bond device to change namespaces (the bug fixed by the
Fixes commit) but since commit
f9399814927ad ("bonding: Don't allow bond devices to change network
namespaces.") that can't happen anyway.
Reported-by: Carol Soto <clsoto@linux.vnet.ibm.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Fixes: a64d49c3dd50 ("bonding: Manage /proc/net/bonding/ entries from
the netdev events")
Tested-by: Carol L Soto <clsoto@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/net/bonding/bond_main.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 19186bf..58b687c 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1815,6 +1815,7 @@ static int bond_release_and_destroy(struct net_device *bond_dev,
bond_dev->priv_flags |= IFF_DISABLE_NETPOLL;
netdev_info(bond_dev, "Destroying bond %s\n",
bond_dev->name);
+ bond_remove_proc_entry(bond);
unregister_netdevice(bond_dev);
}
return ret;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 068/130] fq_codel: fix a use-after-free
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (66 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 067/130] bonding: fix destruction of bond with devices different from arphrd_ether Kamal Mostafa
@ 2015-08-27 22:10 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 069/130] ASoC: dapm: Lock during userspace access Kamal Mostafa
` (61 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:10 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: John Fastabend, Cong Wang, Cong Wang, David S. Miller,
Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: WANG Cong <xiyou.wangcong@gmail.com>
commit 052cbda41fdc243a8d40cce7ab3a6327b4b2887e upstream.
Fixes: 25331d6ce42b ("net: sched: implement qstat helper routines")
Cc: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/sched/sch_fq_codel.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/sched/sch_fq_codel.c b/net/sched/sch_fq_codel.c
index 1e52dec..b61fd84 100644
--- a/net/sched/sch_fq_codel.c
+++ b/net/sched/sch_fq_codel.c
@@ -162,10 +162,10 @@ static unsigned int fq_codel_drop(struct Qdisc *sch)
skb = dequeue_head(flow);
len = qdisc_pkt_len(skb);
q->backlogs[idx] -= len;
- kfree_skb(skb);
sch->q.qlen--;
qdisc_qstats_drop(sch);
qdisc_qstats_backlog_dec(sch, skb);
+ kfree_skb(skb);
flow->dropped++;
return idx;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 069/130] ASoC: dapm: Lock during userspace access
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (67 preceding siblings ...)
2015-08-27 22:10 ` [PATCH 3.19.y-ckt 068/130] fq_codel: fix a use-after-free Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 070/130] dmaengine: pl330: Fix overflow when reporting residue in memcpy Kamal Mostafa
` (60 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Lars-Peter Clausen, Mark Brown, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Lars-Peter Clausen <lars@metafoo.de>
commit e50b1e06b79e9d51efbff9627b4dd407184ef43f upstream.
The DAPM lock must be held when accessing the DAPM graph status through
sysfs or debugfs, otherwise concurrent changes to the graph can result in
undefined behaviour.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
sound/soc/soc-dapm.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 9d56b0b..6b9070f 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -1791,6 +1791,7 @@ static ssize_t dapm_widget_power_read_file(struct file *file,
size_t count, loff_t *ppos)
{
struct snd_soc_dapm_widget *w = file->private_data;
+ struct snd_soc_card *card = w->dapm->card;
char *buf;
int in, out;
ssize_t ret;
@@ -1800,6 +1801,8 @@ static ssize_t dapm_widget_power_read_file(struct file *file,
if (!buf)
return -ENOMEM;
+ mutex_lock(&card->dapm_mutex);
+
/* Supply widgets are not handled by is_connected_{input,output}_ep() */
if (w->is_supply) {
in = 0;
@@ -1846,6 +1849,8 @@ static ssize_t dapm_widget_power_read_file(struct file *file,
p->sink->name);
}
+ mutex_unlock(&card->dapm_mutex);
+
ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
kfree(buf);
@@ -2117,11 +2122,15 @@ static ssize_t dapm_widget_show(struct device *dev,
struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
int i, count = 0;
+ mutex_lock(&rtd->card->dapm_mutex);
+
for (i = 0; i < rtd->num_codecs; i++) {
struct snd_soc_codec *codec = rtd->codec_dais[i]->codec;
count += dapm_widget_show_codec(codec, buf + count);
}
+ mutex_unlock(&rtd->card->dapm_mutex);
+
return count;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 070/130] dmaengine: pl330: Fix overflow when reporting residue in memcpy
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (68 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 069/130] ASoC: dapm: Lock during userspace access Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 071/130] ASoC: dapm: Don't add prefix to widget stream name Kamal Mostafa
` (59 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Krzysztof Kozlowski, Vinod Koul, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Krzysztof Kozlowski <k.kozlowski@samsung.com>
commit ae128293d97404f491dc76f1843c7adacfec3441 upstream.
During memcpy operations the residue was always set to an u32 overflowed
value.
In pl330_tx_status() function number of currently transferred bytes was
subtracted from internal "bytes_requested" field. However this
"bytes_requested" was not initialized at start to length of memcpy
buffer so transferred bytes were subtracted from 0 causing overflow.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Fixes: aee4d1fac887 ("dmaengine: pl330: improve pl330_tx_status() function")
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/dma/pl330.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index bdf40b5..c068ef1 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2521,6 +2521,7 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst,
desc->rqcfg.brst_len = 1;
desc->rqcfg.brst_len = get_burst_len(desc, len);
+ desc->bytes_requested = len;
desc->txd.flags = flags;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 071/130] ASoC: dapm: Don't add prefix to widget stream name
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (69 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 070/130] dmaengine: pl330: Fix overflow when reporting residue in memcpy Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 072/130] ASoC: ssm4567: Keep TDM_BCLKS in ssm4567_set_dai_fmt Kamal Mostafa
` (58 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Lars-Peter Clausen, Mark Brown, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Lars-Peter Clausen <lars@metafoo.de>
commit a798c24a69b64f09e2d323ac8155a36373e5d5fd upstream.
Commit fdb6eb0a1287 ("ASoC: dapm: Modify widget stream name according to
prefix") fixed the case where a DAPM route between a DAI widget and a
DAC/ADC/AIF widget with a matching stream name was not created when the
DAPM context was using a prefix.
Unfortunately the patch introduced a few issues on its own like leaking the
dynamically allocated stream name memory and also not checking whether the
allocation succeeded in the first place.
It is also incomplete in that it still does not handle the case where
stream name of the widget is a substring of the stream name of the DAI,
which is explicitly allowed and works fine if no DAPM prefix is used.
Revert the commit and take a slightly different approach to solving the
issue. Instead of comparing the widget's stream name to the name of the DAI
widget compare it to the stream name of the DAI widget. The stream name of
the DAI widget is identical to the name of the DAI widget except that it
wont have the DAPM prefix added. So this approach behaves identical
regardless to whether the DAPM context uses a prefix or not.
We don't have to worry about potentially matching with a widget with the
same stream name, but from a different DAPM context with a different
prefix, since the code already makes sure that both the DAI widget and the
matched widget are from the same DAPM context.
Fixes: fdb6eb0a1287 ("ASoC: dapm: Modify widget stream name according to prefix")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
sound/soc/soc-dapm.c | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 6b9070f..ec3cc88 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -3082,16 +3082,10 @@ snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
}
prefix = soc_dapm_prefix(dapm);
- if (prefix) {
+ if (prefix)
w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
- if (widget->sname)
- w->sname = kasprintf(GFP_KERNEL, "%s %s", prefix,
- widget->sname);
- } else {
+ else
w->name = kasprintf(GFP_KERNEL, "%s", widget->name);
- if (widget->sname)
- w->sname = kasprintf(GFP_KERNEL, "%s", widget->sname);
- }
if (w->name == NULL) {
kfree(w);
return NULL;
@@ -3417,7 +3411,7 @@ int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
break;
}
- if (!w->sname || !strstr(w->sname, dai_w->name))
+ if (!w->sname || !strstr(w->sname, dai_w->sname))
continue;
if (dai_w->id == snd_soc_dapm_dai_in) {
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 072/130] ASoC: ssm4567: Keep TDM_BCLKS in ssm4567_set_dai_fmt
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (70 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 071/130] ASoC: dapm: Don't add prefix to widget stream name Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 073/130] ARM: OMAP2+: hwmod: Fix _wait_target_ready() for hwmods without sysc Kamal Mostafa
` (57 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Ben Zhang, Mark Brown, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Ben Zhang <benzh@chromium.org>
commit a6c2a32ac83567f15e9af3dcbc73148ce68b2ced upstream.
The regmap_write in ssm4567_set_dai_fmt accidentally clears the
TDM_BCLKS field which was set earlier by ssm4567_set_tdm_slot.
This patch fixes it by using regmap_update_bits with proper mask.
Signed-off-by: Ben Zhang <benzh@chromium.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
sound/soc/codecs/ssm4567.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/sound/soc/codecs/ssm4567.c b/sound/soc/codecs/ssm4567.c
index a984485..f7549cc 100644
--- a/sound/soc/codecs/ssm4567.c
+++ b/sound/soc/codecs/ssm4567.c
@@ -315,7 +315,13 @@ static int ssm4567_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
if (invert_fclk)
ctrl1 |= SSM4567_SAI_CTRL_1_FSYNC;
- return regmap_write(ssm4567->regmap, SSM4567_REG_SAI_CTRL_1, ctrl1);
+ return regmap_update_bits(ssm4567->regmap, SSM4567_REG_SAI_CTRL_1,
+ SSM4567_SAI_CTRL_1_BCLK |
+ SSM4567_SAI_CTRL_1_FSYNC |
+ SSM4567_SAI_CTRL_1_LJ |
+ SSM4567_SAI_CTRL_1_TDM |
+ SSM4567_SAI_CTRL_1_PDM,
+ ctrl1);
}
static int ssm4567_set_power(struct ssm4567 *ssm4567, bool enable)
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 073/130] ARM: OMAP2+: hwmod: Fix _wait_target_ready() for hwmods without sysc
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (71 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 072/130] ASoC: ssm4567: Keep TDM_BCLKS in ssm4567_set_dai_fmt Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 074/130] ASoC: pcm1681: Fix setting de-emphasis sampling rate selection Kamal Mostafa
` (56 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Roger Quadros, Paul Walmsley, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Roger Quadros <rogerq@ti.com>
commit 9a258afa928b45e6dd2efcac46ccf7eea705d35a upstream.
For hwmods without sysc, _init_mpu_rt_base(oh) won't be called and so
_find_mpu_rt_port(oh) will return NULL thus preventing ready state check
on those modules after the module is enabled.
This can potentially cause a bus access error if the module is accessed
before the module is ready.
Fix this by unconditionally calling _init_mpu_rt_base() during hwmod
_init(). Do ioremap only if we need SYSC access.
Eventhough _wait_target_ready() check doesn't really need MPU RT port but
just the PRCM registers, we still mandate that the hwmod must have an
MPU RT port if ready state check needs to be done. Else it would mean that
the module is not accessible by MPU so there is no point in waiting
for target to be ready.
e.g. this fixes the below DCAN bus access error on AM437x-gp-evm.
[ 16.672978] ------------[ cut here ]------------
[ 16.677885] WARNING: CPU: 0 PID: 1580 at drivers/bus/omap_l3_noc.c:147 l3_interrupt_handler+0x234/0x35c()
[ 16.687946] 44000000.ocp:L3 Custom Error: MASTER M2 (64-bit) TARGET L4_PER_0 (Read): Data Access in User mode during Functional access
[ 16.700654] Modules linked in: xhci_hcd btwilink ti_vpfe dwc3 videobuf2_core ov2659 bluetooth v4l2_common videodev ti_am335x_adc kfifo_buf industrialio c_can_platform videobuf2_dma_contig media snd_soc_tlv320aic3x pixcir_i2c_ts c_can dc
[ 16.731144] CPU: 0 PID: 1580 Comm: rpc.statd Not tainted 3.14.26-02561-gf733aa036398 #180
[ 16.739747] Backtrace:
[ 16.742336] [<c0011108>] (dump_backtrace) from [<c00112a4>] (show_stack+0x18/0x1c)
[ 16.750285] r6:00000093 r5:00000009 r4:eab5b8a8 r3:00000000
[ 16.756252] [<c001128c>] (show_stack) from [<c05a4418>] (dump_stack+0x20/0x28)
[ 16.763870] [<c05a43f8>] (dump_stack) from [<c0037120>] (warn_slowpath_common+0x6c/0x8c)
[ 16.772408] [<c00370b4>] (warn_slowpath_common) from [<c00371e4>] (warn_slowpath_fmt+0x38/0x40)
[ 16.781550] r8:c05d1f90 r7:c0730844 r6:c0730448 r5:80080003 r4:ed0cd210
[ 16.788626] [<c00371b0>] (warn_slowpath_fmt) from [<c027fa94>] (l3_interrupt_handler+0x234/0x35c)
[ 16.797968] r3:ed0cd480 r2:c0730508
[ 16.801747] [<c027f860>] (l3_interrupt_handler) from [<c0063758>] (handle_irq_event_percpu+0x54/0x1bc)
[ 16.811533] r10:ed005600 r9:c084855b r8:0000002a r7:00000000 r6:00000000 r5:0000002a
[ 16.819780] r4:ed0e6d80
[ 16.822453] [<c0063704>] (handle_irq_event_percpu) from [<c00638f0>] (handle_irq_event+0x30/0x40)
[ 16.831789] r10:eb2b6938 r9:eb2b6960 r8:bf011420 r7:fa240100 r6:00000000 r5:0000002a
[ 16.840052] r4:ed005600
[ 16.842744] [<c00638c0>] (handle_irq_event) from [<c00661d8>] (handle_fasteoi_irq+0x74/0x128)
[ 16.851702] r4:ed005600 r3:00000000
[ 16.855479] [<c0066164>] (handle_fasteoi_irq) from [<c0063068>] (generic_handle_irq+0x28/0x38)
[ 16.864523] r4:0000002a r3:c0066164
[ 16.868294] [<c0063040>] (generic_handle_irq) from [<c000ef60>] (handle_IRQ+0x38/0x8c)
[ 16.876612] r4:c081c640 r3:00000202
[ 16.880380] [<c000ef28>] (handle_IRQ) from [<c00084f0>] (gic_handle_irq+0x30/0x5c)
[ 16.888328] r6:eab5ba38 r5:c0804460 r4:fa24010c r3:00000100
[ 16.894303] [<c00084c0>] (gic_handle_irq) from [<c05a8d80>] (__irq_svc+0x40/0x50)
[ 16.902193] Exception stack(0xeab5ba38 to 0xeab5ba80)
[ 16.907499] ba20: 00000000 00000006
[ 16.916108] ba40: fa1d0000 fa1d0008 ed3d3000 eab5bab4 ed3d3460 c0842af4 bf011420 eb2b6960
[ 16.924716] ba60: eb2b6938 eab5ba8c eab5ba90 eab5ba80 bf035220 bf07702c 600f0013 ffffffff
[ 16.933317] r7:eab5ba6c r6:ffffffff r5:600f0013 r4:bf07702c
[ 16.939317] [<bf077000>] (c_can_plat_read_reg_aligned_to_16bit [c_can_platform]) from [<bf035220>] (c_can_get_berr_counter+0x38/0x64 [c_can])
[ 16.952696] [<bf0351e8>] (c_can_get_berr_counter [c_can]) from [<bf010294>] (can_fill_info+0x124/0x15c [can_dev])
[ 16.963480] r5:ec8c9740 r4:ed3d3000
[ 16.967253] [<bf010170>] (can_fill_info [can_dev]) from [<c0502fa8>] (rtnl_fill_ifinfo+0x58c/0x8fc)
[ 16.976749] r6:ec8c9740 r5:ed3d3000 r4:eb2b6780
[ 16.981613] [<c0502a1c>] (rtnl_fill_ifinfo) from [<c0503408>] (rtnl_dump_ifinfo+0xf0/0x1dc)
[ 16.990401] r10:ec8c9740 r9:00000000 r8:00000000 r7:00000000 r6:ebd4d1b4 r5:ed3d3000
[ 16.998671] r4:00000000
[ 17.001342] [<c0503318>] (rtnl_dump_ifinfo) from [<c050e6e4>] (netlink_dump+0xa8/0x1e0)
[ 17.009772] r10:00000000 r9:00000000 r8:c0503318 r7:ebf3e6c0 r6:ebd4d1b4 r5:ec8c9740
[ 17.018050] r4:ebd4d000
[ 17.020714] [<c050e63c>] (netlink_dump) from [<c050ec10>] (__netlink_dump_start+0x104/0x154)
[ 17.029591] r6:eab5bd34 r5:ec8c9980 r4:ebd4d000
[ 17.034454] [<c050eb0c>] (__netlink_dump_start) from [<c0505604>] (rtnetlink_rcv_msg+0x110/0x1f4)
[ 17.043778] r7:00000000 r6:ec8c9980 r5:00000f40 r4:ebf3e6c0
[ 17.049743] [<c05054f4>] (rtnetlink_rcv_msg) from [<c05108e8>] (netlink_rcv_skb+0xb4/0xc8)
[ 17.058449] r8:eab5bdac r7:ec8c9980 r6:c05054f4 r5:ec8c9980 r4:ebf3e6c0
[ 17.065534] [<c0510834>] (netlink_rcv_skb) from [<c0504134>] (rtnetlink_rcv+0x24/0x2c)
[ 17.073854] r6:ebd4d000 r5:00000014 r4:ec8c9980 r3:c0504110
[ 17.079846] [<c0504110>] (rtnetlink_rcv) from [<c05102ac>] (netlink_unicast+0x180/0x1ec)
[ 17.088363] r4:ed0c6800 r3:c0504110
[ 17.092113] [<c051012c>] (netlink_unicast) from [<c0510670>] (netlink_sendmsg+0x2ac/0x380)
[ 17.100813] r10:00000000 r8:00000008 r7:ec8c9980 r6:ebd4d000 r5:eab5be70 r4:eab5bee4
[ 17.109083] [<c05103c4>] (netlink_sendmsg) from [<c04dfdb4>] (sock_sendmsg+0x90/0xb0)
[ 17.117305] r10:00000000 r9:eab5a000 r8:becdda3c r7:0000000c r6:ea978400 r5:eab5be70
[ 17.125563] r4:c05103c4
[ 17.128225] [<c04dfd24>] (sock_sendmsg) from [<c04e1c28>] (SyS_sendto+0xb8/0xdc)
[ 17.136001] r6:becdda5c r5:00000014 r4:ecd37040
[ 17.140876] [<c04e1b70>] (SyS_sendto) from [<c000e680>] (ret_fast_syscall+0x0/0x30)
[ 17.148923] r10:00000000 r8:c000e804 r7:00000122 r6:becdda5c r5:0000000c r4:becdda5c
[ 17.157169] ---[ end trace 2b71e15b38f58bad ]---
Fixes: 6423d6df1440 ("ARM: OMAP2+: hwmod: check for module address space during init")
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
arch/arm/mach-omap2/omap_hwmod.c | 24 ++++++++++++++++--------
1 file changed, 16 insertions(+), 8 deletions(-)
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 9025fff..bcb39fb 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -2368,6 +2368,9 @@ static int of_dev_hwmod_lookup(struct device_node *np,
* registers. This address is needed early so the OCP registers that
* are part of the device's address space can be ioremapped properly.
*
+ * If SYSC access is not needed, the registers will not be remapped
+ * and non-availability of MPU access is not treated as an error.
+ *
* Returns 0 on success, -EINVAL if an invalid hwmod is passed, and
* -ENXIO on absent or invalid register target address space.
*/
@@ -2382,6 +2385,11 @@ static int __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data,
_save_mpu_port_index(oh);
+ /* if we don't need sysc access we don't need to ioremap */
+ if (!oh->class->sysc)
+ return 0;
+
+ /* we can't continue without MPU PORT if we need sysc access */
if (oh->_int_flags & _HWMOD_NO_MPU_PORT)
return -ENXIO;
@@ -2391,8 +2399,10 @@ static int __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data,
oh->name);
/* Extract the IO space from device tree blob */
- if (!np)
+ if (!np) {
+ pr_err("omap_hwmod: %s: no dt node\n", oh->name);
return -ENXIO;
+ }
va_start = of_iomap(np, index + oh->mpu_rt_idx);
} else {
@@ -2451,13 +2461,11 @@ static int __init _init(struct omap_hwmod *oh, void *data)
oh->name, np->name);
}
- if (oh->class->sysc) {
- r = _init_mpu_rt_base(oh, NULL, index, np);
- if (r < 0) {
- WARN(1, "omap_hwmod: %s: doesn't have mpu register target base\n",
- oh->name);
- return 0;
- }
+ r = _init_mpu_rt_base(oh, NULL, index, np);
+ if (r < 0) {
+ WARN(1, "omap_hwmod: %s: doesn't have mpu register target base\n",
+ oh->name);
+ return 0;
}
r = _init_clocks(oh, NULL);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 074/130] ASoC: pcm1681: Fix setting de-emphasis sampling rate selection
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (72 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 073/130] ARM: OMAP2+: hwmod: Fix _wait_target_ready() for hwmods without sysc Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 075/130] qla2xxx: Fix hardware lock/unlock issue causing kernel panic Kamal Mostafa
` (55 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Axel Lin, Mark Brown, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Axel Lin <axel.lin@ingics.com>
commit fa8173a3ef0570affde7da352de202190b3786c2 upstream.
The de-emphasis sampling rate selection is controlled by BIT[3:4] of
PCM1681_DEEMPH_CONTROL register. Do proper left shift to set it.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Marek Belisko <marek.belisko@streamunlimited.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
sound/soc/codecs/pcm1681.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/codecs/pcm1681.c b/sound/soc/codecs/pcm1681.c
index 477e13d..e7ba557 100644
--- a/sound/soc/codecs/pcm1681.c
+++ b/sound/soc/codecs/pcm1681.c
@@ -102,7 +102,7 @@ static int pcm1681_set_deemph(struct snd_soc_codec *codec)
if (val != -1) {
regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
- PCM1681_DEEMPH_RATE_MASK, val);
+ PCM1681_DEEMPH_RATE_MASK, val << 3);
enable = 1;
} else
enable = 0;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 075/130] qla2xxx: Fix hardware lock/unlock issue causing kernel panic.
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (73 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 074/130] ASoC: pcm1681: Fix setting de-emphasis sampling rate selection Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 076/130] qla2xxx: release request queue reservation Kamal Mostafa
` (54 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Saurav Kashyap, Himanshu Madhani, Nicholas Bellinger,
Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Saurav Kashyap <saurav.kashyap@qlogic.com>
commit ba9f6f64a0ff6b7ecaed72144c179061f8eca378 upstream.
[ Upstream commit ef86cb2059a14b4024c7320999ee58e938873032 ]
This patch fixes a kernel panic for qla2xxx Target core
Module driver introduced by a fix in the qla2xxx initiator code.
Commit ef86cb2 ("qla2xxx: Mark port lost when we receive an RSCN for it.")
introduced the regression for qla2xxx Target driver.
Stack trace will have following signature
--- <NMI exception stack> ---
[ffff88081faa3cc8] _raw_spin_lock_irqsave at ffffffff815b1f03
[ffff88081faa3cd0] qlt_fc_port_deleted at ffffffffa096ccd0 [qla2xxx]
[ffff88081faa3d20] qla2x00_schedule_rport_del at ffffffffa0913831[qla2xxx]
[ffff88081faa3d50] qla2x00_mark_device_lost at ffffffffa09159c5[qla2xxx]
[ffff88081faa3db0] qla2x00_async_event at ffffffffa0938d59 [qla2xxx]
[ffff88081faa3e30] qla24xx_msix_default at ffffffffa093a326 [qla2xxx]
[ffff88081faa3e90] handle_irq_event_percpu at ffffffff810a7b8d
[ffff88081faa3ee0] handle_irq_event at ffffffff810a7d32
[ffff88081faa3f10] handle_edge_irq at ffffffff810ab6b9
[ffff88081faa3f30] handle_irq at ffffffff8100619c
[ffff88081faa3f70] do_IRQ at ffffffff815b4b1c
--- <IRQ stack> ---
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/qla2xxx/qla_init.c | 4 ++++
drivers/scsi/qla2xxx/qla_target.c | 6 ------
2 files changed, 4 insertions(+), 6 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index e59f25b..12d15c8 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -2873,6 +2873,7 @@ qla2x00_rport_del(void *data)
struct fc_rport *rport;
scsi_qla_host_t *vha = fcport->vha;
unsigned long flags;
+ unsigned long vha_flags;
spin_lock_irqsave(fcport->vha->host->host_lock, flags);
rport = fcport->drport ? fcport->drport: fcport->rport;
@@ -2884,7 +2885,9 @@ qla2x00_rport_del(void *data)
* Release the target mode FC NEXUS in qla_target.c code
* if target mod is enabled.
*/
+ spin_lock_irqsave(&vha->hw->hardware_lock, vha_flags);
qlt_fc_port_deleted(vha, fcport);
+ spin_unlock_irqrestore(&vha->hw->hardware_lock, vha_flags);
}
}
@@ -3252,6 +3255,7 @@ qla2x00_reg_remote_port(scsi_qla_host_t *vha, fc_port_t *fcport)
* Create target mode FC NEXUS in qla_target.c if target mode is
* enabled..
*/
+
qlt_fc_port_added(vha, fcport);
spin_lock_irqsave(fcport->vha->host->host_lock, flags);
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 5741825..83e0626 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -782,10 +782,8 @@ void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
{
- struct qla_hw_data *ha = vha->hw;
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
struct qla_tgt_sess *sess;
- unsigned long flags;
if (!vha->hw->tgt.tgt_ops)
return;
@@ -793,14 +791,11 @@ void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
if (!tgt || (fcport->port_type != FCT_INITIATOR))
return;
- spin_lock_irqsave(&ha->hardware_lock, flags);
if (tgt->tgt_stop) {
- spin_unlock_irqrestore(&ha->hardware_lock, flags);
return;
}
sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
if (!sess) {
- spin_unlock_irqrestore(&ha->hardware_lock, flags);
return;
}
@@ -808,7 +803,6 @@ void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
sess->local = 1;
qlt_schedule_sess_for_deletion(sess, false);
- spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
static inline int test_tgt_sess_count(struct qla_tgt *tgt)
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 076/130] qla2xxx: release request queue reservation.
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (74 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 075/130] qla2xxx: Fix hardware lock/unlock issue causing kernel panic Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 077/130] qla2xxx: Remove msleep in qlt_send_term_exchange Kamal Mostafa
` (53 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Quinn Tran, Himanshu Madhani, Nicholas Bellinger, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Quinn Tran <quinn.tran@qlogic.com>
commit 810e30bc4658e9c069577bde52394a5af872803c upstream.
Request IOCB queue element(s) is reserved during
good path IO. Under error condition such as unable
to allocate IOCB handle condition, the IOCB count
that was reserved is not released.
Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/qla2xxx/qla_target.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 83e0626..6f91f9c 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -2341,9 +2341,10 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
res = qlt_build_ctio_crc2_pkt(&prm, vha);
else
res = qlt_24xx_build_ctio_pkt(&prm, vha);
- if (unlikely(res != 0))
+ if (unlikely(res != 0)) {
+ vha->req->cnt += full_req_cnt;
goto out_unmap_unlock;
-
+ }
pkt = (struct ctio7_to_24xx *)prm.pkt;
@@ -2481,8 +2482,11 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
else
res = qlt_24xx_build_ctio_pkt(&prm, vha);
- if (unlikely(res != 0))
+ if (unlikely(res != 0)) {
+ vha->req->cnt += prm.req_cnt;
goto out_unlock_free_unmap;
+ }
+
pkt = (struct ctio7_to_24xx *)prm.pkt;
pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
CTIO7_FLAGS_STATUS_MODE_0);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 077/130] qla2xxx: Remove msleep in qlt_send_term_exchange
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (75 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 076/130] qla2xxx: release request queue reservation Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 078/130] qla2xxx: fix command initialization in target mode Kamal Mostafa
` (52 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Himanshu Madhani, Giridhar Malavali, Nicholas Bellinger,
Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Himanshu Madhani <himanshu.madhani@qlogic.com>
commit 6bc85dd595a5438b50ec085668e53ef26058bb90 upstream.
Remove unnecessary msleep from qlt_send_term_exchange as it
adds latency of 250 msec while sending terminate exchange to
an aborted task.
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Reviewed-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/qla2xxx/qla_target.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 6f91f9c..056fb84 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -2715,7 +2715,7 @@ static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
static void qlt_send_term_exchange(struct scsi_qla_host *vha,
struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
{
- unsigned long flags;
+ unsigned long flags = 0;
int rc;
if (qlt_issue_marker(vha, ha_locked) < 0)
@@ -2731,17 +2731,18 @@ static void qlt_send_term_exchange(struct scsi_qla_host *vha,
rc = __qlt_send_term_exchange(vha, cmd, atio);
if (rc == -ENOMEM)
qlt_alloc_qfull_cmd(vha, atio, 0, 0);
- spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
done:
if (cmd && ((cmd->state != QLA_TGT_STATE_ABORTED) ||
!cmd->cmd_sent_to_fw)) {
- if (!ha_locked && !in_interrupt())
- msleep(250); /* just in case */
-
- qlt_unmap_sg(vha, cmd);
+ if (cmd->sg_mapped)
+ qlt_unmap_sg(vha, cmd);
vha->hw->tgt.tgt_ops->free_cmd(cmd);
}
+
+ if (!ha_locked)
+ spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+
return;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 078/130] qla2xxx: fix command initialization in target mode.
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (76 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 077/130] qla2xxx: Remove msleep in qlt_send_term_exchange Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 079/130] qla2xxx: kill sessions/log out initiator on RSCN and port down events Kamal Mostafa
` (51 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Kanoj Sarcar, Himanshu Madhani, Nicholas Bellinger, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Kanoj Sarcar <kanoj.sarcar@qlogic.com>
commit 9fce12540cb9f91e7f1f539a80b70f0b388bdae0 upstream.
Signed-off-by: Kanoj Sarcar <kanoj.sarcar@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/qla2xxx/qla_target.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 056fb84..d1991ce 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -3346,6 +3346,11 @@ static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
cmd->loop_id = sess->loop_id;
cmd->conf_compl_supported = sess->conf_compl_supported;
+ cmd->cmd_flags = 0;
+ cmd->jiffies_at_alloc = get_jiffies_64();
+
+ cmd->reset_count = vha->hw->chip_reset;
+
return cmd;
}
@@ -3452,11 +3457,6 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
return -ENOMEM;
}
- cmd->cmd_flags = 0;
- cmd->jiffies_at_alloc = get_jiffies_64();
-
- cmd->reset_count = vha->hw->chip_reset;
-
cmd->cmd_in_wq = 1;
cmd->cmd_flags |= BIT_0;
INIT_WORK(&cmd->work, qlt_do_work);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 079/130] qla2xxx: kill sessions/log out initiator on RSCN and port down events
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (77 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 078/130] qla2xxx: fix command initialization in target mode Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 080/130] qla2xxx: cleanup cmd in qla workqueue before processing TMR Kamal Mostafa
` (50 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Roland Dreier, Alexei Potashnik, Himanshu Madhani,
Nicholas Bellinger, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Roland Dreier <roland@purestorage.com>
commit b2032fd567326ad0b2d443bb6d96d2580ec670a5 upstream.
To fix some issues talking to ESX, this patch modifies the qla2xxx driver
so that it never logs into remote ports. This has the side effect of
getting rid of the "rports" entirely, which means we never log out of
initiators and never tear down sessions when an initiator goes away.
This is mostly OK, except that we can run into trouble if we have
initiator A assigned FC address X:Y:Z by the fabric talking to us, and
then initiator A goes away. Some time (could be a long time) later,
initiator B comes along and also gets FC address X:Y:Z (which is
available again, because initiator A is gone). If initiator B starts
talking to us, then we'll still have the session for initiator A, and
since we look up incoming IO based on the FC address X:Y:Z, initiator B
will end up using ACLs for initiator A.
Fix this by:
1. Handling RSCN events somewhat differently; instead of completely
skipping the processing of fcports, we look through the list, and if
an fcport disappears, we tell the target code the tear down the
session and tell the HBA FW to release the N_Port handle.
2. Handling "port down" events by flushing all of our sessions. The
firmware was already releasing the N_Port handle but we want the
target code to drop all the sessions too.
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Alexei Potashnik <alexei@purestorage.com>
Acked-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/qla2xxx/qla_dbg.c | 2 +-
drivers/scsi/qla2xxx/qla_init.c | 137 ++++++++++++++++++++++++++++++--------
drivers/scsi/qla2xxx/qla_target.c | 9 +--
3 files changed, 117 insertions(+), 31 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c
index d77fe43..17f7403 100644
--- a/drivers/scsi/qla2xxx/qla_dbg.c
+++ b/drivers/scsi/qla2xxx/qla_dbg.c
@@ -68,7 +68,7 @@
* | | | 0xd101-0xd1fe |
* | | | 0xd214-0xd2fe |
* | Target Mode | 0xe079 | |
- * | Target Mode Management | 0xf072 | 0xf002 |
+ * | Target Mode Management | 0xf080 | 0xf002 |
* | | | 0xf046-0xf049 |
* | Target Mode Task Management | 0x1000b | |
* ----------------------------------------------------------------------
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 12d15c8..f86d1ed 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -3413,20 +3413,43 @@ qla2x00_configure_fabric(scsi_qla_host_t *vha)
if ((fcport->flags & FCF_FABRIC_DEVICE) == 0)
continue;
- if (fcport->scan_state == QLA_FCPORT_SCAN &&
- atomic_read(&fcport->state) == FCS_ONLINE) {
- qla2x00_mark_device_lost(vha, fcport,
- ql2xplogiabsentdevice, 0);
- if (fcport->loop_id != FC_NO_LOOP_ID &&
- (fcport->flags & FCF_FCP2_DEVICE) == 0 &&
- fcport->port_type != FCT_INITIATOR &&
- fcport->port_type != FCT_BROADCAST) {
- ha->isp_ops->fabric_logout(vha,
- fcport->loop_id,
- fcport->d_id.b.domain,
- fcport->d_id.b.area,
- fcport->d_id.b.al_pa);
- qla2x00_clear_loop_id(fcport);
+ if (fcport->scan_state == QLA_FCPORT_SCAN) {
+ if (qla_ini_mode_enabled(base_vha) &&
+ atomic_read(&fcport->state) == FCS_ONLINE) {
+ qla2x00_mark_device_lost(vha, fcport,
+ ql2xplogiabsentdevice, 0);
+ if (fcport->loop_id != FC_NO_LOOP_ID &&
+ (fcport->flags & FCF_FCP2_DEVICE) == 0 &&
+ fcport->port_type != FCT_INITIATOR &&
+ fcport->port_type != FCT_BROADCAST) {
+ ha->isp_ops->fabric_logout(vha,
+ fcport->loop_id,
+ fcport->d_id.b.domain,
+ fcport->d_id.b.area,
+ fcport->d_id.b.al_pa);
+ qla2x00_clear_loop_id(fcport);
+ }
+ } else if (!qla_ini_mode_enabled(base_vha)) {
+ /*
+ * In target mode, explicitly kill
+ * sessions and log out of devices
+ * that are gone, so that we don't
+ * end up with an initiator using the
+ * wrong ACL (if the fabric recycles
+ * an FC address and we have a stale
+ * session around) and so that we don't
+ * report initiators that are no longer
+ * on the fabric.
+ */
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf077,
+ "port gone, logging out/killing session: "
+ "%8phC state 0x%x flags 0x%x fc4_type 0x%x "
+ "scan_state %d\n",
+ fcport->port_name,
+ atomic_read(&fcport->state),
+ fcport->flags, fcport->fc4_type,
+ fcport->scan_state);
+ qlt_fc_port_deleted(vha, fcport);
}
}
}
@@ -3447,6 +3470,28 @@ qla2x00_configure_fabric(scsi_qla_host_t *vha)
(fcport->flags & FCF_LOGIN_NEEDED) == 0)
continue;
+ /*
+ * If we're not an initiator, skip looking for devices
+ * and logging in. There's no reason for us to do it,
+ * and it seems to actively cause problems in target
+ * mode if we race with the initiator logging into us
+ * (we might get the "port ID used" status back from
+ * our login command and log out the initiator, which
+ * seems to cause havoc).
+ */
+ if (!qla_ini_mode_enabled(base_vha)) {
+ if (fcport->scan_state == QLA_FCPORT_FOUND) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf078,
+ "port %8phC state 0x%x flags 0x%x fc4_type 0x%x "
+ "scan_state %d (initiator mode disabled; skipping "
+ "login)\n", fcport->port_name,
+ atomic_read(&fcport->state),
+ fcport->flags, fcport->fc4_type,
+ fcport->scan_state);
+ }
+ continue;
+ }
+
if (fcport->loop_id == FC_NO_LOOP_ID) {
fcport->loop_id = next_loopid;
rval = qla2x00_find_new_loop_id(
@@ -3473,16 +3518,38 @@ qla2x00_configure_fabric(scsi_qla_host_t *vha)
test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags))
break;
- /* Find a new loop ID to use. */
- fcport->loop_id = next_loopid;
- rval = qla2x00_find_new_loop_id(base_vha, fcport);
- if (rval != QLA_SUCCESS) {
- /* Ran out of IDs to use */
- break;
- }
+ /*
+ * If we're not an initiator, skip looking for devices
+ * and logging in. There's no reason for us to do it,
+ * and it seems to actively cause problems in target
+ * mode if we race with the initiator logging into us
+ * (we might get the "port ID used" status back from
+ * our login command and log out the initiator, which
+ * seems to cause havoc).
+ */
+ if (qla_ini_mode_enabled(base_vha)) {
+ /* Find a new loop ID to use. */
+ fcport->loop_id = next_loopid;
+ rval = qla2x00_find_new_loop_id(base_vha,
+ fcport);
+ if (rval != QLA_SUCCESS) {
+ /* Ran out of IDs to use */
+ break;
+ }
- /* Login and update database */
- qla2x00_fabric_dev_login(vha, fcport, &next_loopid);
+ /* Login and update database */
+ qla2x00_fabric_dev_login(vha, fcport,
+ &next_loopid);
+ } else {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf079,
+ "new port %8phC state 0x%x flags 0x%x fc4_type "
+ "0x%x scan_state %d (initiator mode disabled; "
+ "skipping login)\n",
+ fcport->port_name,
+ atomic_read(&fcport->state),
+ fcport->flags, fcport->fc4_type,
+ fcport->scan_state);
+ }
list_move_tail(&fcport->list, &vha->vp_fcports);
}
@@ -3678,11 +3745,12 @@ qla2x00_find_all_fabric_devs(scsi_qla_host_t *vha,
fcport->fp_speed = new_fcport->fp_speed;
/*
- * If address the same and state FCS_ONLINE, nothing
- * changed.
+ * If address the same and state FCS_ONLINE
+ * (or in target mode), nothing changed.
*/
if (fcport->d_id.b24 == new_fcport->d_id.b24 &&
- atomic_read(&fcport->state) == FCS_ONLINE) {
+ (atomic_read(&fcport->state) == FCS_ONLINE ||
+ !qla_ini_mode_enabled(base_vha))) {
break;
}
@@ -3702,6 +3770,22 @@ qla2x00_find_all_fabric_devs(scsi_qla_host_t *vha,
* Log it out if still logged in and mark it for
* relogin later.
*/
+ if (!qla_ini_mode_enabled(base_vha)) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf080,
+ "port changed FC ID, %8phC"
+ " old %x:%x:%x (loop_id 0x%04x)-> new %x:%x:%x\n",
+ fcport->port_name,
+ fcport->d_id.b.domain,
+ fcport->d_id.b.area,
+ fcport->d_id.b.al_pa,
+ fcport->loop_id,
+ new_fcport->d_id.b.domain,
+ new_fcport->d_id.b.area,
+ new_fcport->d_id.b.al_pa);
+ fcport->d_id.b24 = new_fcport->d_id.b24;
+ break;
+ }
+
fcport->d_id.b24 = new_fcport->d_id.b24;
fcport->flags |= FCF_LOGIN_NEEDED;
if (fcport->loop_id != FC_NO_LOOP_ID &&
@@ -3721,6 +3805,7 @@ qla2x00_find_all_fabric_devs(scsi_qla_host_t *vha,
if (found)
continue;
/* If device was not in our fcports list, then add it. */
+ new_fcport->scan_state = QLA_FCPORT_FOUND;
list_add_tail(&new_fcport->list, new_fcports);
/* Allocate a new replacement fcport. */
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index d1991ce..fdfc85b 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -113,6 +113,7 @@ static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha,
static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
struct atio_from_isp *atio, uint16_t status, int qfull);
static void qlt_disable_vha(struct scsi_qla_host *vha);
+static void qlt_clear_tgt_db(struct qla_tgt *tgt);
/*
* Global Variables
*/
@@ -431,10 +432,10 @@ static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
loop_id = le16_to_cpu(n->u.isp24.nport_handle);
if (loop_id == 0xFFFF) {
-#if 0 /* FIXME: Re-enable Global event handling.. */
/* Global event */
- atomic_inc(&ha->tgt.qla_tgt->tgt_global_resets_count);
- qlt_clear_tgt_db(ha->tgt.qla_tgt);
+ atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count);
+ qlt_clear_tgt_db(vha->vha_tgt.qla_tgt);
+#if 0 /* FIXME: do we need to choose a session here? */
if (!list_empty(&ha->tgt.qla_tgt->sess_list)) {
sess = list_entry(ha->tgt.qla_tgt->sess_list.next,
typeof(*sess), sess_list_entry);
@@ -788,7 +789,7 @@ void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
if (!vha->hw->tgt.tgt_ops)
return;
- if (!tgt || (fcport->port_type != FCT_INITIATOR))
+ if (!tgt)
return;
if (tgt->tgt_stop) {
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 080/130] qla2xxx: cleanup cmd in qla workqueue before processing TMR
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (78 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 079/130] qla2xxx: kill sessions/log out initiator on RSCN and port down events Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 081/130] qla2xxx: delay plogi/prli ack until existing sessions are deleted Kamal Mostafa
` (49 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Swapnil Nagle, Alexei Potashnik, Himanshu Madhani,
Nicholas Bellinger, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Swapnil Nagle <swapnil.nagle@purestorage.com>
commit 8b2f5ff3d05c2c48b722c3cc67b8226f1601042b upstream.
Since cmds go into qla_tgt_wq and TMRs don't, it's possible that TMR
like TASK_ABORT can be queued over the cmd for which it was meant.
To avoid this race, use a per-port list to keep track of cmds that
are enqueued to qla_tgt_wq but not yet processed. When a TMR arrives,
iterate through this list and remove any cmds that match the TMR.
This patch supports TASK_ABORT and LUN_RESET.
Signed-off-by: Swapnil Nagle <swapnil.nagle@purestorage.com>
Signed-off-by: Alexei Potashnik <alexei@purestorage.com>
Acked-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/qla2xxx/qla_dbg.c | 2 +-
drivers/scsi/qla2xxx/qla_def.h | 5 ++
drivers/scsi/qla2xxx/qla_os.c | 3 +
drivers/scsi/qla2xxx/qla_target.c | 123 +++++++++++++++++++++++++++++++++++--
drivers/scsi/qla2xxx/qla_target.h | 12 ++++
drivers/scsi/qla2xxx/tcm_qla2xxx.c | 8 +--
6 files changed, 140 insertions(+), 13 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c
index 17f7403..3775db0 100644
--- a/drivers/scsi/qla2xxx/qla_dbg.c
+++ b/drivers/scsi/qla2xxx/qla_dbg.c
@@ -68,7 +68,7 @@
* | | | 0xd101-0xd1fe |
* | | | 0xd214-0xd2fe |
* | Target Mode | 0xe079 | |
- * | Target Mode Management | 0xf080 | 0xf002 |
+ * | Target Mode Management | 0xf083 | 0xf002 |
* | | | 0xf046-0xf049 |
* | Target Mode Task Management | 0x1000b | |
* ----------------------------------------------------------------------
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 5f6b296..e180f45 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -3576,6 +3576,11 @@ typedef struct scsi_qla_host {
uint16_t fcoe_fcf_idx;
uint8_t fcoe_vn_port_mac[6];
+ /* list of commands waiting on workqueue */
+ struct list_head qla_cmd_list;
+ struct list_head qla_sess_op_cmd_list;
+ spinlock_t cmd_list_lock;
+
uint32_t vp_abort_cnt;
struct fc_vport *fc_vport; /* holds fc_vport * for each vport */
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index cce1cbc..a0b0656 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -3763,8 +3763,11 @@ struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *sht,
INIT_LIST_HEAD(&vha->vp_fcports);
INIT_LIST_HEAD(&vha->work_list);
INIT_LIST_HEAD(&vha->list);
+ INIT_LIST_HEAD(&vha->qla_cmd_list);
+ INIT_LIST_HEAD(&vha->qla_sess_op_cmd_list);
spin_lock_init(&vha->work_lock);
+ spin_lock_init(&vha->cmd_list_lock);
sprintf(vha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, vha->host_no);
ql_dbg(ql_dbg_init, vha, 0x0041,
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index fdfc85b..3de1b9f 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -1170,6 +1170,70 @@ static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
FCP_TMF_CMPL, true);
}
+static int abort_cmd_for_tag(struct scsi_qla_host *vha, uint32_t tag)
+{
+ struct qla_tgt_sess_op *op;
+ struct qla_tgt_cmd *cmd;
+
+ spin_lock(&vha->cmd_list_lock);
+
+ list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
+ if (tag == op->atio.u.isp24.exchange_addr) {
+ op->aborted = true;
+ spin_unlock(&vha->cmd_list_lock);
+ return 1;
+ }
+ }
+
+ list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
+ if (tag == cmd->atio.u.isp24.exchange_addr) {
+ cmd->state = QLA_TGT_STATE_ABORTED;
+ spin_unlock(&vha->cmd_list_lock);
+ return 1;
+ }
+ }
+
+ spin_unlock(&vha->cmd_list_lock);
+ return 0;
+}
+
+/* drop cmds for the given lun
+ * XXX only looks for cmds on the port through which lun reset was recieved
+ * XXX does not go through the list of other port (which may have cmds
+ * for the same lun)
+ */
+static void abort_cmds_for_lun(struct scsi_qla_host *vha,
+ uint32_t lun, uint8_t *s_id)
+{
+ struct qla_tgt_sess_op *op;
+ struct qla_tgt_cmd *cmd;
+ uint32_t key;
+
+ key = sid_to_key(s_id);
+ spin_lock(&vha->cmd_list_lock);
+ list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
+ uint32_t op_key;
+ uint32_t op_lun;
+
+ op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
+ op_lun = scsilun_to_int(
+ (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun);
+ if (op_key == key && op_lun == lun)
+ op->aborted = true;
+ }
+ list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
+ uint32_t cmd_key;
+ uint32_t cmd_lun;
+
+ cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
+ cmd_lun = scsilun_to_int(
+ (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun);
+ if (cmd_key == key && cmd_lun == lun)
+ cmd->state = QLA_TGT_STATE_ABORTED;
+ }
+ spin_unlock(&vha->cmd_list_lock);
+}
+
/* ha->hardware_lock supposed to be held on entry */
static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess)
@@ -1194,8 +1258,19 @@ static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
}
spin_unlock(&se_sess->sess_cmd_lock);
- if (!found_lun)
- return -ENOENT;
+ /* cmd not in LIO lists, look in qla list */
+ if (!found_lun) {
+ if (abort_cmd_for_tag(vha, abts->exchange_addr_to_abort)) {
+ /* send TASK_ABORT response immediately */
+ qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_CMPL, false);
+ return 0;
+ } else {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf081,
+ "unable to find cmd in driver or LIO for tag 0x%x\n",
+ abts->exchange_addr_to_abort);
+ return -ENOENT;
+ }
+ }
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
"qla_target(%d): task abort (tag=%d)\n",
@@ -3265,6 +3340,13 @@ static void __qlt_do_work(struct qla_tgt_cmd *cmd)
if (tgt->tgt_stop)
goto out_term;
+ if (cmd->state == QLA_TGT_STATE_ABORTED) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082,
+ "cmd with tag %u is aborted\n",
+ cmd->atio.u.isp24.exchange_addr);
+ goto out_term;
+ }
+
cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
cmd->tag = atio->u.isp24.exchange_addr;
cmd->unpacked_lun = scsilun_to_int(
@@ -3318,6 +3400,12 @@ out_term:
static void qlt_do_work(struct work_struct *work)
{
struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
+ scsi_qla_host_t *vha = cmd->vha;
+ unsigned long flags;
+
+ spin_lock_irqsave(&vha->cmd_list_lock, flags);
+ list_del(&cmd->cmd_list);
+ spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
__qlt_do_work(cmd);
}
@@ -3369,14 +3457,25 @@ static void qlt_create_sess_from_atio(struct work_struct *work)
unsigned long flags;
uint8_t *s_id = op->atio.u.isp24.fcp_hdr.s_id;
+ spin_lock_irqsave(&vha->cmd_list_lock, flags);
+ list_del(&op->cmd_list);
+ spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
+
+ if (op->aborted) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf083,
+ "sess_op with tag %u is aborted\n",
+ op->atio.u.isp24.exchange_addr);
+ goto out_term;
+ }
+
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
- "qla_target(%d): Unable to find wwn login"
- " (s_id %x:%x:%x), trying to create it manually\n",
- vha->vp_idx, s_id[0], s_id[1], s_id[2]);
+ "qla_target(%d): Unable to find wwn login"
+ " (s_id %x:%x:%x), trying to create it manually\n",
+ vha->vp_idx, s_id[0], s_id[1], s_id[2]);
if (op->atio.u.raw.entry_count > 1) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
- "Dropping multy entry atio %p\n", &op->atio);
+ "Dropping multy entry atio %p\n", &op->atio);
goto out_term;
}
@@ -3441,6 +3540,11 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
memcpy(&op->atio, atio, sizeof(*atio));
op->vha = vha;
+
+ spin_lock(&vha->cmd_list_lock);
+ list_add_tail(&op->cmd_list, &vha->qla_sess_op_cmd_list);
+ spin_unlock(&vha->cmd_list_lock);
+
INIT_WORK(&op->work, qlt_create_sess_from_atio);
queue_work(qla_tgt_wq, &op->work);
return 0;
@@ -3460,6 +3564,11 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
cmd->cmd_in_wq = 1;
cmd->cmd_flags |= BIT_0;
+
+ spin_lock(&vha->cmd_list_lock);
+ list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list);
+ spin_unlock(&vha->cmd_list_lock);
+
INIT_WORK(&cmd->work, qlt_do_work);
queue_work(qla_tgt_wq, &cmd->work);
return 0;
@@ -3473,6 +3582,7 @@ static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
struct scsi_qla_host *vha = sess->vha;
struct qla_hw_data *ha = vha->hw;
struct qla_tgt_mgmt_cmd *mcmd;
+ struct atio_from_isp *a = (struct atio_from_isp *)iocb;
int res;
uint8_t tmr_func;
@@ -3513,6 +3623,7 @@ static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
"qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
tmr_func = TMR_LUN_RESET;
+ abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id);
break;
case QLA_TGT_CLEAR_TS:
diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h
index 3320867..e530463 100644
--- a/drivers/scsi/qla2xxx/qla_target.h
+++ b/drivers/scsi/qla2xxx/qla_target.h
@@ -874,6 +874,8 @@ struct qla_tgt_sess_op {
struct scsi_qla_host *vha;
struct atio_from_isp atio;
struct work_struct work;
+ struct list_head cmd_list;
+ bool aborted;
};
/*
@@ -1074,6 +1076,16 @@ static inline void qla_reverse_ini_mode(struct scsi_qla_host *ha)
ha->host->active_mode |= MODE_INITIATOR;
}
+static inline uint32_t sid_to_key(const uint8_t *s_id)
+{
+ uint32_t key;
+
+ key = (((unsigned long)s_id[0] << 16) |
+ ((unsigned long)s_id[1] << 8) |
+ (unsigned long)s_id[2]);
+ return key;
+}
+
/*
* Exported symbols from qla_target.c LLD logic used by qla2xxx code..
*/
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index 272a264..de71bea 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -1273,9 +1273,7 @@ static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
return NULL;
}
- key = (((unsigned long)s_id[0] << 16) |
- ((unsigned long)s_id[1] << 8) |
- (unsigned long)s_id[2]);
+ key = sid_to_key(s_id);
pr_debug("find_sess_by_s_id: 0x%06x\n", key);
se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
@@ -1310,9 +1308,7 @@ static void tcm_qla2xxx_set_sess_by_s_id(
void *slot;
int rc;
- key = (((unsigned long)s_id[0] << 16) |
- ((unsigned long)s_id[1] << 8) |
- (unsigned long)s_id[2]);
+ key = sid_to_key(s_id);
pr_debug("set_sess_by_s_id: %06x\n", key);
slot = btree_lookup32(&lport->lport_fcport_map, key);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 081/130] qla2xxx: delay plogi/prli ack until existing sessions are deleted
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (79 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 080/130] qla2xxx: cleanup cmd in qla workqueue before processing TMR Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 082/130] qla2xxx: Abort stale cmds on qla_tgt_wq when plogi arrives Kamal Mostafa
` (48 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Alexei Potashnik, Himanshu Madhani, Nicholas Bellinger,
Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexei Potashnik <alexei@purestorage.com>
commit a6ca88780dd66b0700d89419abd17b6b4bb49483 upstream.
- keep qla_tgt_sess object on the session list until it's freed
- modify use of sess->deleted flag to differentiate delayed
session deletion that can be cancelled from irreversible one:
QLA_SESS_DELETION_PENDING vs QLA_SESS_DELETION_IN_PROGRESS
- during IN_PROGRESS deletion all newly arrived commands and TMRs will
be rejected, existing commands and TMRs will be terminated when
given by the core to the fabric or simply dropped if session logout
has already happened (logout terminates all existing exchanges)
- new PLOGI will initiate deletion of the following sessions
(unless deletion is already IN_PROGRESS):
- with the same port_name (with logout)
- different port_name, different loop_id but the same port_id
(with logout)
- different port_name, different port_id, but the same loop_id
(without logout)
- additionally each new PLOGI will store imm notify iocb in the
same port_name session being deleted. When deletion process
completes this iocb will be acked. Only the most recent PLOGI
iocb is stored. The older ones will be terminated when replaced.
- new PRLI will initiate deletion of the following sessions
(unless deletion is already IN_PROGRESS):
- different port_name, different port_id, but the same loop_id
(without logout)
Signed-off-by: Alexei Potashnik <alexei@purestorage.com>
Acked-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/qla2xxx/qla_dbg.c | 6 +-
drivers/scsi/qla2xxx/qla_def.h | 2 +
drivers/scsi/qla2xxx/qla_init.c | 7 +-
drivers/scsi/qla2xxx/qla_iocb.c | 3 +
drivers/scsi/qla2xxx/qla_target.c | 438 +++++++++++++++++++++++++++++++++++--
drivers/scsi/qla2xxx/qla_target.h | 43 +++-
drivers/scsi/qla2xxx/tcm_qla2xxx.c | 4 +
7 files changed, 481 insertions(+), 22 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c
index 3775db0..1bbd930 100644
--- a/drivers/scsi/qla2xxx/qla_dbg.c
+++ b/drivers/scsi/qla2xxx/qla_dbg.c
@@ -67,10 +67,10 @@
* | | | 0xd031-0xd0ff |
* | | | 0xd101-0xd1fe |
* | | | 0xd214-0xd2fe |
- * | Target Mode | 0xe079 | |
- * | Target Mode Management | 0xf083 | 0xf002 |
+ * | Target Mode | 0xe080 | |
+ * | Target Mode Management | 0xf091 | 0xf002 |
* | | | 0xf046-0xf049 |
- * | Target Mode Task Management | 0x1000b | |
+ * | Target Mode Task Management | 0x1000d | |
* ----------------------------------------------------------------------
*/
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index e180f45..91717fa 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -274,6 +274,7 @@
#define RESPONSE_ENTRY_CNT_FX00 256 /* Number of response entries.*/
struct req_que;
+struct qla_tgt_sess;
/*
* (sd.h is not exported, hence local inclusion)
@@ -2026,6 +2027,7 @@ typedef struct fc_port {
uint16_t port_id;
unsigned long retry_delay_timestamp;
+ struct qla_tgt_sess *tgt_session;
} fc_port_t;
#include "qla_mr.h"
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index f86d1ed..fafc545 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -115,6 +115,8 @@ qla2x00_async_iocb_timeout(void *data)
QLA_LOGIO_LOGIN_RETRIED : 0;
qla2x00_post_async_login_done_work(fcport->vha, fcport,
lio->u.logio.data);
+ } else if (sp->type == SRB_LOGOUT_CMD) {
+ qlt_logo_completion_handler(fcport, QLA_FUNCTION_TIMEOUT);
}
}
@@ -497,7 +499,10 @@ void
qla2x00_async_logout_done(struct scsi_qla_host *vha, fc_port_t *fcport,
uint16_t *data)
{
- qla2x00_mark_device_lost(vha, fcport, 1, 0);
+ /* Don't re-login in target mode */
+ if (!fcport->tgt_session)
+ qla2x00_mark_device_lost(vha, fcport, 1, 0);
+ qlt_logo_completion_handler(fcport, data[0]);
return;
}
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
index a1ab25f..dc96f31 100644
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -1943,6 +1943,9 @@ qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio)
logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
logio->control_flags =
cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO);
+ if (!sp->fcport->tgt_session ||
+ !sp->fcport->tgt_session->keep_nport_handle)
+ logio->control_flags |= cpu_to_le16(LCF_FREE_NPORT);
logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
logio->port_id[0] = sp->fcport->d_id.b.al_pa;
logio->port_id[1] = sp->fcport->d_id.b.area;
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 3de1b9f..9ac20ba 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -114,6 +114,10 @@ static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
struct atio_from_isp *atio, uint16_t status, int qfull);
static void qlt_disable_vha(struct scsi_qla_host *vha);
static void qlt_clear_tgt_db(struct qla_tgt *tgt);
+static void qlt_send_notify_ack(struct scsi_qla_host *vha,
+ struct imm_ntfy_from_isp *ntfy,
+ uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
+ uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan);
/*
* Global Variables
*/
@@ -382,14 +386,73 @@ static void qlt_free_session_done(struct work_struct *work)
struct qla_tgt *tgt = sess->tgt;
struct scsi_qla_host *vha = sess->vha;
struct qla_hw_data *ha = vha->hw;
+ unsigned long flags;
+ bool logout_started = false;
+ fc_port_t fcport;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf084,
+ "%s: se_sess %p / sess %p from port %8phC loop_id %#04x"
+ " s_id %02x:%02x:%02x logout %d keep %d plogi %d\n",
+ __func__, sess->se_sess, sess, sess->port_name, sess->loop_id,
+ sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa,
+ sess->logout_on_delete, sess->keep_nport_handle,
+ sess->plogi_ack_needed);
BUG_ON(!tgt);
+
+ if (sess->logout_on_delete) {
+ int rc;
+
+ memset(&fcport, 0, sizeof(fcport));
+ fcport.loop_id = sess->loop_id;
+ fcport.d_id = sess->s_id;
+ memcpy(fcport.port_name, sess->port_name, WWN_SIZE);
+ fcport.vha = vha;
+ fcport.tgt_session = sess;
+
+ rc = qla2x00_post_async_logout_work(vha, &fcport, NULL);
+ if (rc != QLA_SUCCESS)
+ ql_log(ql_log_warn, vha, 0xf085,
+ "Schedule logo failed sess %p rc %d\n",
+ sess, rc);
+ else
+ logout_started = true;
+ }
+
/*
* Release the target session for FC Nexus from fabric module code.
*/
if (sess->se_sess != NULL)
ha->tgt.tgt_ops->free_session(sess);
+ if (logout_started) {
+ bool traced = false;
+
+ while (!ACCESS_ONCE(sess->logout_completed)) {
+ if (!traced) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf086,
+ "%s: waiting for sess %p logout\n",
+ __func__, sess);
+ traced = true;
+ }
+ msleep(100);
+ }
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf087,
+ "%s: sess %p logout completed\n",
+ __func__, sess);
+ }
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ if (sess->plogi_ack_needed)
+ qlt_send_notify_ack(vha, &sess->tm_iocb,
+ 0, 0, 0, 0, 0, 0);
+
+ list_del(&sess->sess_list_entry);
+
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
"Unregistration of sess %p finished\n", sess);
@@ -410,9 +473,9 @@ void qlt_unreg_sess(struct qla_tgt_sess *sess)
vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
- list_del(&sess->sess_list_entry);
- if (sess->deleted)
- list_del(&sess->del_list_entry);
+ if (!list_empty(&sess->del_list_entry))
+ list_del_init(&sess->del_list_entry);
+ sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
INIT_WORK(&sess->free_work, qlt_free_session_done);
schedule_work(&sess->free_work);
@@ -490,27 +553,36 @@ static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess,
struct qla_tgt *tgt = sess->tgt;
uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
- if (sess->deleted)
- return;
+ if (sess->deleted) {
+ /* Upgrade to unconditional deletion in case it was temporary */
+ if (immediate && sess->deleted == QLA_SESS_DELETION_PENDING)
+ list_del(&sess->del_list_entry);
+ else
+ return;
+ }
ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
"Scheduling sess %p for deletion\n", sess);
- list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
- sess->deleted = 1;
- if (immediate)
+ if (immediate) {
dev_loss_tmo = 0;
+ sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
+ list_add(&sess->del_list_entry, &tgt->del_sess_list);
+ } else {
+ sess->deleted = QLA_SESS_DELETION_PENDING;
+ list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
+ }
sess->expires = jiffies + dev_loss_tmo * HZ;
ql_dbg(ql_dbg_tgt, sess->vha, 0xe048,
"qla_target(%d): session for port %8phC (loop ID %d) scheduled for "
- "deletion in %u secs (expires: %lu) immed: %d\n",
+ "deletion in %u secs (expires: %lu) immed: %d, logout: %d\n",
sess->vha->vp_idx, sess->port_name, sess->loop_id, dev_loss_tmo,
- sess->expires, immediate);
+ sess->expires, immediate, sess->logout_on_delete);
if (immediate)
- schedule_delayed_work(&tgt->sess_del_work, 0);
+ mod_delayed_work(system_wq, &tgt->sess_del_work, 0);
else
schedule_delayed_work(&tgt->sess_del_work,
sess->expires - jiffies);
@@ -579,9 +651,9 @@ out_free_id_list:
/* ha->hardware_lock supposed to be held on entry */
static void qlt_undelete_sess(struct qla_tgt_sess *sess)
{
- BUG_ON(!sess->deleted);
+ BUG_ON(sess->deleted != QLA_SESS_DELETION_PENDING);
- list_del(&sess->del_list_entry);
+ list_del_init(&sess->del_list_entry);
sess->deleted = 0;
}
@@ -600,7 +672,9 @@ static void qlt_del_sess_work_fn(struct delayed_work *work)
del_list_entry);
elapsed = jiffies;
if (time_after_eq(elapsed, sess->expires)) {
- qlt_undelete_sess(sess);
+ /* No turning back */
+ list_del_init(&sess->del_list_entry);
+ sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
"Timeout: sess %p about to be deleted\n",
@@ -644,6 +718,13 @@ static struct qla_tgt_sess *qlt_create_sess(
fcport->d_id.b.al_pa, fcport->d_id.b.area,
fcport->loop_id);
+ /* Cannot undelete at this point */
+ if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
+ spin_unlock_irqrestore(&ha->hardware_lock,
+ flags);
+ return NULL;
+ }
+
if (sess->deleted)
qlt_undelete_sess(sess);
@@ -674,6 +755,14 @@ static struct qla_tgt_sess *qlt_create_sess(
sess->s_id = fcport->d_id;
sess->loop_id = fcport->loop_id;
sess->local = local;
+ INIT_LIST_HEAD(&sess->del_list_entry);
+
+ /* Under normal circumstances we want to logout from firmware when
+ * session eventually ends and release corresponding nport handle.
+ * In the exception cases (e.g. when new PLOGI is waiting) corresponding
+ * code will adjust these flags as necessary. */
+ sess->logout_on_delete = 1;
+ sess->keep_nport_handle = 0;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
"Adding sess %p to tgt %p via ->check_initiator_node_acl()\n",
@@ -751,6 +840,10 @@ void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
mutex_unlock(&vha->vha_tgt.tgt_mutex);
spin_lock_irqsave(&ha->hardware_lock, flags);
+ } else if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
+ /* Point of no return */
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ return;
} else {
kref_get(&sess->se_sess->sess_kref);
@@ -2373,6 +2466,19 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
unsigned long flags = 0;
int res;
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ if (cmd->sess && cmd->sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
+ cmd->state = QLA_TGT_STATE_PROCESSED;
+ if (cmd->sess->logout_completed)
+ /* no need to terminate. FW already freed exchange. */
+ qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
+ else
+ qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ return 0;
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
memset(&prm, 0, sizeof(prm));
qlt_check_srr_debug(cmd, &xmit_type);
@@ -2534,7 +2640,8 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
spin_lock_irqsave(&ha->hardware_lock, flags);
- if (qla2x00_reset_active(vha) || cmd->reset_count != ha->chip_reset) {
+ if (qla2x00_reset_active(vha) || (cmd->reset_count != ha->chip_reset) ||
+ (cmd->sess && cmd->sess->deleted == QLA_SESS_DELETION_IN_PROGRESS)) {
/*
* Either a chip reset is active or this request was from
* previous life, just abort the processing.
@@ -2727,6 +2834,89 @@ out:
/* If hardware_lock held on entry, might drop it, then reaquire */
/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
+static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha,
+ struct imm_ntfy_from_isp *ntfy)
+{
+ struct nack_to_isp *nack;
+ struct qla_hw_data *ha = vha->hw;
+ request_t *pkt;
+ int ret = 0;
+
+ ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c,
+ "Sending TERM ELS CTIO (ha=%p)\n", ha);
+
+ pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
+ if (pkt == NULL) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe080,
+ "qla_target(%d): %s failed: unable to allocate "
+ "request packet\n", vha->vp_idx, __func__);
+ return -ENOMEM;
+ }
+
+ pkt->entry_type = NOTIFY_ACK_TYPE;
+ pkt->entry_count = 1;
+ pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+
+ nack = (struct nack_to_isp *)pkt;
+ nack->ox_id = ntfy->ox_id;
+
+ nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
+ if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
+ nack->u.isp24.flags = ntfy->u.isp24.flags &
+ __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
+ }
+
+ /* terminate */
+ nack->u.isp24.flags |=
+ __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE);
+
+ nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
+ nack->u.isp24.status = ntfy->u.isp24.status;
+ nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
+ nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
+ nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
+ nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
+ nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
+ nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
+
+ qla2x00_start_iocbs(vha, vha->req);
+ return ret;
+}
+
+static void qlt_send_term_imm_notif(struct scsi_qla_host *vha,
+ struct imm_ntfy_from_isp *imm, int ha_locked)
+{
+ unsigned long flags = 0;
+ int rc;
+
+ if (qlt_issue_marker(vha, ha_locked) < 0)
+ return;
+
+ if (ha_locked) {
+ rc = __qlt_send_term_imm_notif(vha, imm);
+
+#if 0 /* Todo */
+ if (rc == -ENOMEM)
+ qlt_alloc_qfull_cmd(vha, imm, 0, 0);
+#endif
+ goto done;
+ }
+
+ spin_lock_irqsave(&vha->hw->hardware_lock, flags);
+ rc = __qlt_send_term_imm_notif(vha, imm);
+
+#if 0 /* Todo */
+ if (rc == -ENOMEM)
+ qlt_alloc_qfull_cmd(vha, imm, 0, 0);
+#endif
+
+done:
+ if (!ha_locked)
+ spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+}
+
+/* If hardware_lock held on entry, might drop it, then reaquire */
+/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
struct qla_tgt_cmd *cmd,
struct atio_from_isp *atio)
@@ -3777,22 +3967,237 @@ static int qlt_abort_task(struct scsi_qla_host *vha,
return __qlt_abort_task(vha, iocb, sess);
}
+void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
+{
+ if (fcport->tgt_session) {
+ if (rc != MBS_COMMAND_COMPLETE) {
+ ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf088,
+ "%s: se_sess %p / sess %p from"
+ " port %8phC loop_id %#04x s_id %02x:%02x:%02x"
+ " LOGO failed: %#x\n",
+ __func__,
+ fcport->tgt_session->se_sess,
+ fcport->tgt_session,
+ fcport->port_name, fcport->loop_id,
+ fcport->d_id.b.domain, fcport->d_id.b.area,
+ fcport->d_id.b.al_pa, rc);
+ }
+
+ fcport->tgt_session->logout_completed = 1;
+ }
+}
+
+static void qlt_swap_imm_ntfy_iocb(struct imm_ntfy_from_isp *a,
+ struct imm_ntfy_from_isp *b)
+{
+ struct imm_ntfy_from_isp tmp;
+ memcpy(&tmp, a, sizeof(struct imm_ntfy_from_isp));
+ memcpy(a, b, sizeof(struct imm_ntfy_from_isp));
+ memcpy(b, &tmp, sizeof(struct imm_ntfy_from_isp));
+}
+
+/*
+* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list)
+*
+* Schedules sessions with matching port_id/loop_id but different wwn for
+* deletion. Returns existing session with matching wwn if present.
+* Null otherwise.
+*/
+static struct qla_tgt_sess *
+qlt_find_sess_invalidate_other(struct qla_tgt *tgt, uint64_t wwn,
+ port_id_t port_id, uint16_t loop_id)
+{
+ struct qla_tgt_sess *sess = NULL, *other_sess;
+ uint64_t other_wwn;
+
+ list_for_each_entry(other_sess, &tgt->sess_list, sess_list_entry) {
+
+ other_wwn = wwn_to_u64(other_sess->port_name);
+
+ if (wwn == other_wwn) {
+ WARN_ON(sess);
+ sess = other_sess;
+ continue;
+ }
+
+ /* find other sess with nport_id collision */
+ if (port_id.b24 == other_sess->s_id.b24) {
+ if (loop_id != other_sess->loop_id) {
+ ql_dbg(ql_dbg_tgt_tmr, tgt->vha, 0x1000c,
+ "Invalidating sess %p loop_id %d wwn %llx.\n",
+ other_sess, other_sess->loop_id, other_wwn);
+
+ /*
+ * logout_on_delete is set by default, but another
+ * session that has the same s_id/loop_id combo
+ * might have cleared it when requested this session
+ * deletion, so don't touch it
+ */
+ qlt_schedule_sess_for_deletion(other_sess, true);
+ } else {
+ /*
+ * Another wwn used to have our s_id/loop_id
+ * combo - kill the session, but don't log out
+ */
+ sess->logout_on_delete = 0;
+ qlt_schedule_sess_for_deletion(other_sess,
+ true);
+ }
+ continue;
+ }
+
+ /* find other sess with nport handle collision */
+ if (loop_id == other_sess->loop_id) {
+ ql_dbg(ql_dbg_tgt_tmr, tgt->vha, 0x1000d,
+ "Invalidating sess %p loop_id %d wwn %llx.\n",
+ other_sess, other_sess->loop_id, other_wwn);
+
+ /* Same loop_id but different s_id
+ * Ok to kill and logout */
+ qlt_schedule_sess_for_deletion(other_sess, true);
+ }
+ }
+
+ return sess;
+}
+
/*
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
*/
static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
struct imm_ntfy_from_isp *iocb)
{
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ struct qla_tgt_sess *sess = NULL;
+ uint64_t wwn;
+ port_id_t port_id;
+ uint16_t loop_id;
+ uint16_t wd3_lo;
int res = 0;
+ wwn = wwn_to_u64(iocb->u.isp24.port_name);
+
+ port_id.b.domain = iocb->u.isp24.port_id[2];
+ port_id.b.area = iocb->u.isp24.port_id[1];
+ port_id.b.al_pa = iocb->u.isp24.port_id[0];
+ port_id.b.rsvd_1 = 0;
+
+ loop_id = le16_to_cpu(iocb->u.isp24.nport_handle);
+
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
"qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n",
vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode);
+ /* res = 1 means ack at the end of thread
+ * res = 0 means ack async/later.
+ */
switch (iocb->u.isp24.status_subcode) {
case ELS_PLOGI:
- case ELS_FLOGI:
+
+ if (wwn)
+ sess = qlt_find_sess_invalidate_other(tgt, wwn,
+ port_id, loop_id);
+
+ if (!sess || IS_SW_RESV_ADDR(sess->s_id)) {
+ res = 1;
+ break;
+ }
+
+ if (sess->plogi_ack_needed) {
+ /*
+ * Initiator sent another PLOGI before last PLOGI could
+ * finish. Swap plogi iocbs and terminate old one
+ * without acking, new one will get acked when session
+ * deletion completes.
+ */
+ ql_log(ql_log_warn, sess->vha, 0xf089,
+ "sess %p received double plogi.\n", sess);
+
+ qlt_swap_imm_ntfy_iocb(iocb, &sess->tm_iocb);
+
+ qlt_send_term_imm_notif(vha, iocb, 1);
+
+ res = 0;
+ break;
+ }
+
+ res = 0;
+
+ /*
+ * Save immediate Notif IOCB for Ack when sess is done
+ * and being deleted.
+ */
+ memcpy(&sess->tm_iocb, iocb, sizeof(sess->tm_iocb));
+ sess->plogi_ack_needed = 1;
+
+ /*
+ * Under normal circumstances we want to release nport handle
+ * during LOGO process to avoid nport handle leaks inside FW.
+ * The exception is when LOGO is done while another PLOGI with
+ * the same nport handle is waiting as might be the case here.
+ * Note: there is always a possibily of a race where session
+ * deletion has already started for other reasons (e.g. ACL
+ * removal) and now PLOGI arrives:
+ * 1. if PLOGI arrived in FW after nport handle has been freed,
+ * FW must have assigned this PLOGI a new/same handle and we
+ * can proceed ACK'ing it as usual when session deletion
+ * completes.
+ * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT
+ * bit reached it, the handle has now been released. We'll
+ * get an error when we ACK this PLOGI. Nothing will be sent
+ * back to initiator. Initiator should eventually retry
+ * PLOGI and situation will correct itself.
+ */
+ sess->keep_nport_handle = ((sess->loop_id == loop_id) &&
+ (sess->s_id.b24 == port_id.b24));
+ qlt_schedule_sess_for_deletion(sess, true);
+ break;
+
case ELS_PRLI:
+ wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo);
+
+ if (wwn)
+ sess = qlt_find_sess_invalidate_other(tgt, wwn, port_id,
+ loop_id);
+
+ if (sess != NULL) {
+ if (sess->deleted) {
+ /*
+ * Impatient initiator sent PRLI before last
+ * PLOGI could finish. Will force him to re-try,
+ * while last one finishes.
+ */
+ ql_log(ql_log_warn, sess->vha, 0xf090,
+ "sess %p PRLI received, before plogi ack.\n",
+ sess);
+ qlt_send_term_imm_notif(vha, iocb, 1);
+ res = 0;
+ break;
+ }
+
+ /*
+ * This shouldn't happen under normal circumstances,
+ * since we have deleted the old session during PLOGI
+ */
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf091,
+ "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
+ sess->loop_id, sess, iocb->u.isp24.nport_handle);
+
+ sess->local = 0;
+ sess->loop_id = loop_id;
+ sess->s_id = port_id;
+
+ if (wd3_lo & BIT_7)
+ sess->conf_compl_supported = 1;
+
+ res = 1;
+ } else {
+ /* todo: else - create sess here. */
+ res = 1; /* send notify ack */
+ }
+
+ break;
+
case ELS_LOGO:
case ELS_PRLO:
res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
@@ -3810,6 +4215,7 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
break;
}
+ case ELS_FLOGI: /* should never happen */
default:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061,
"qla_target(%d): Unsupported ELS command %x "
diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h
index e530463..13b3b0d 100644
--- a/drivers/scsi/qla2xxx/qla_target.h
+++ b/drivers/scsi/qla2xxx/qla_target.h
@@ -167,7 +167,24 @@ struct imm_ntfy_from_isp {
uint32_t srr_rel_offs;
uint16_t srr_ui;
uint16_t srr_ox_id;
- uint8_t reserved_4[19];
+ union {
+ struct {
+ uint8_t node_name[8];
+ } plogi; /* PLOGI/ADISC/PDISC */
+ struct {
+ /* PRLI word 3 bit 0-15 */
+ uint16_t wd3_lo;
+ uint8_t resv0[6];
+ } prli;
+ struct {
+ uint8_t port_id[3];
+ uint8_t resv1;
+ uint16_t nport_handle;
+ uint16_t resv2;
+ } req_els;
+ } u;
+ uint8_t port_name[8];
+ uint8_t resv3[3];
uint8_t vp_index;
uint32_t reserved_5;
uint8_t port_id[3];
@@ -234,6 +251,7 @@ struct nack_to_isp {
uint8_t reserved[2];
uint16_t ox_id;
} __packed;
+#define NOTIFY_ACK_FLAGS_TERMINATE BIT_3
#define NOTIFY_ACK_SRR_FLAGS_ACCEPT 0
#define NOTIFY_ACK_SRR_FLAGS_REJECT 1
@@ -878,6 +896,13 @@ struct qla_tgt_sess_op {
bool aborted;
};
+enum qla_sess_deletion {
+ QLA_SESS_DELETION_NONE = 0,
+ QLA_SESS_DELETION_PENDING = 1, /* hopefully we can get rid of
+ * this one */
+ QLA_SESS_DELETION_IN_PROGRESS = 2,
+};
+
/*
* Equivilant to IT Nexus (Initiator-Target)
*/
@@ -886,8 +911,13 @@ struct qla_tgt_sess {
port_id_t s_id;
unsigned int conf_compl_supported:1;
- unsigned int deleted:1;
+ unsigned int deleted:2;
unsigned int local:1;
+ unsigned int logout_on_delete:1;
+ unsigned int plogi_ack_needed:1;
+ unsigned int keep_nport_handle:1;
+
+ unsigned char logout_completed;
struct se_session *se_sess;
struct scsi_qla_host *vha;
@@ -899,6 +929,10 @@ struct qla_tgt_sess {
uint8_t port_name[WWN_SIZE];
struct work_struct free_work;
+
+ union {
+ struct imm_ntfy_from_isp tm_iocb;
+ };
};
struct qla_tgt_cmd {
@@ -1029,6 +1063,10 @@ struct qla_tgt_srr_ctio {
struct qla_tgt_cmd *cmd;
};
+/* Check for Switch reserved address */
+#define IS_SW_RESV_ADDR(_s_id) \
+ ((_s_id.b.domain == 0xff) && (_s_id.b.area == 0xfc))
+
#define QLA_TGT_XMIT_DATA 1
#define QLA_TGT_XMIT_STATUS 2
#define QLA_TGT_XMIT_ALL (QLA_TGT_XMIT_STATUS|QLA_TGT_XMIT_DATA)
@@ -1122,5 +1160,6 @@ extern void qlt_stop_phase2(struct qla_tgt *);
extern irqreturn_t qla83xx_msix_atio_q(int, void *);
extern void qlt_83xx_iospace_config(struct qla_hw_data *);
extern int qlt_free_qfull_cmds(struct scsi_qla_host *);
+extern void qlt_logo_completion_handler(fc_port_t *, int);
#endif /* __QLA_TARGET_H */
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index de71bea..48dc2df 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -1666,6 +1666,10 @@ static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
}
sess->conf_compl_supported = conf_compl_supported;
+
+ /* Reset logout parameters to default */
+ sess->logout_on_delete = 1;
+ sess->keep_nport_handle = 0;
}
/*
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 082/130] qla2xxx: Abort stale cmds on qla_tgt_wq when plogi arrives
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (80 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 081/130] qla2xxx: delay plogi/prli ack until existing sessions are deleted Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 083/130] qla2xxx: added sess generations to detect RSCN update races Kamal Mostafa
` (47 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Alexei Potashnik, Himanshu Madhani, Nicholas Bellinger,
Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexei Potashnik <alexei@purestorage.com>
commit daddf5cf9b5c68b81b2bb7133f1dd0fda4552d0b upstream.
cancel any commands from initiator's s_id that are still waiting
on qla_tgt_wq when PLOGI arrives.
Signed-off-by: Alexei Potashnik <alexei@purestorage.com>
Acked-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/qla2xxx/qla_target.c | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 9ac20ba..3e63424 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -4061,6 +4061,38 @@ qlt_find_sess_invalidate_other(struct qla_tgt *tgt, uint64_t wwn,
return sess;
}
+/* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */
+static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id)
+{
+ struct qla_tgt_sess_op *op;
+ struct qla_tgt_cmd *cmd;
+ uint32_t key;
+ int count = 0;
+
+ key = (((u32)s_id->b.domain << 16) |
+ ((u32)s_id->b.area << 8) |
+ ((u32)s_id->b.al_pa));
+
+ spin_lock(&vha->cmd_list_lock);
+ list_for_each_entry(op, &vha->qla_sess_op_cmd_list, cmd_list) {
+ uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id);
+ if (op_key == key) {
+ op->aborted = true;
+ count++;
+ }
+ }
+ list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) {
+ uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id);
+ if (cmd_key == key) {
+ cmd->state = QLA_TGT_STATE_ABORTED;
+ count++;
+ }
+ }
+ spin_unlock(&vha->cmd_list_lock);
+
+ return count;
+}
+
/*
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
*/
@@ -4094,6 +4126,9 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
switch (iocb->u.isp24.status_subcode) {
case ELS_PLOGI:
+ /* Mark all stale commands in qla_tgt_wq for deletion */
+ abort_cmds_for_s_id(vha, &port_id);
+
if (wwn)
sess = qlt_find_sess_invalidate_other(tgt, wwn,
port_id, loop_id);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 083/130] qla2xxx: added sess generations to detect RSCN update races
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (81 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 082/130] qla2xxx: Abort stale cmds on qla_tgt_wq when plogi arrives Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 084/130] qla2xxx: disable scsi_transport_fc registration in target mode Kamal Mostafa
` (46 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Alexei Potashnik, Himanshu Madhani, Nicholas Bellinger,
Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexei Potashnik <alexei@purestorage.com>
commit df673274fa4896f25f0bf348d2a3535d74b4cbec upstream.
RSCN processing in qla2xxx driver can run in parallel with ELS/IO
processing. As such the decision to remove disappeared fc port's
session could be stale, because a new login sequence has occurred
since and created a brand new session.
Previous mechanism of dealing with this by delaying deletion request
was prone to erroneous deletions if the event that was supposed to
cancel the deletion never arrived or has been delayed in processing.
New mechanism relies on a time-like generation counter to serialize
RSCN updates relative to ELS/IO updates.
Signed-off-by: Alexei Potashnik <alexei@purestorage.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/qla2xxx/qla_dbg.c | 2 +-
drivers/scsi/qla2xxx/qla_def.h | 5 ++++
drivers/scsi/qla2xxx/qla_init.c | 32 +++++++++++++--------
drivers/scsi/qla2xxx/qla_os.c | 5 +++-
drivers/scsi/qla2xxx/qla_target.c | 60 ++++++++++++++++++++++++++++++++-------
drivers/scsi/qla2xxx/qla_target.h | 5 +++-
6 files changed, 83 insertions(+), 26 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c
index 1bbd930..88ff7c3 100644
--- a/drivers/scsi/qla2xxx/qla_dbg.c
+++ b/drivers/scsi/qla2xxx/qla_dbg.c
@@ -68,7 +68,7 @@
* | | | 0xd101-0xd1fe |
* | | | 0xd214-0xd2fe |
* | Target Mode | 0xe080 | |
- * | Target Mode Management | 0xf091 | 0xf002 |
+ * | Target Mode Management | 0xf096 | 0xf002 |
* | | | 0xf046-0xf049 |
* | Target Mode Task Management | 0x1000d | |
* ----------------------------------------------------------------------
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 91717fa..c03d33f 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -3583,6 +3583,11 @@ typedef struct scsi_qla_host {
struct list_head qla_sess_op_cmd_list;
spinlock_t cmd_list_lock;
+ /* Counter to detect races between ELS and RSCN events */
+ atomic_t generation_tick;
+ /* Time when global fcport update has been scheduled */
+ int total_fcport_update_gen;
+
uint32_t vp_abort_cnt;
struct fc_vport *fc_vport; /* holds fc_vport * for each vport */
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index fafc545..664ea17 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -2876,24 +2876,14 @@ qla2x00_rport_del(void *data)
{
fc_port_t *fcport = data;
struct fc_rport *rport;
- scsi_qla_host_t *vha = fcport->vha;
unsigned long flags;
- unsigned long vha_flags;
spin_lock_irqsave(fcport->vha->host->host_lock, flags);
rport = fcport->drport ? fcport->drport: fcport->rport;
fcport->drport = NULL;
spin_unlock_irqrestore(fcport->vha->host->host_lock, flags);
- if (rport) {
+ if (rport)
fc_remote_port_delete(rport);
- /*
- * Release the target mode FC NEXUS in qla_target.c code
- * if target mod is enabled.
- */
- spin_lock_irqsave(&vha->hw->hardware_lock, vha_flags);
- qlt_fc_port_deleted(vha, fcport);
- spin_unlock_irqrestore(&vha->hw->hardware_lock, vha_flags);
- }
}
/**
@@ -3333,6 +3323,7 @@ qla2x00_configure_fabric(scsi_qla_host_t *vha)
LIST_HEAD(new_fcports);
struct qla_hw_data *ha = vha->hw;
struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
+ int discovery_gen;
/* If FL port exists, then SNS is present */
if (IS_FWI2_CAPABLE(ha))
@@ -3403,6 +3394,14 @@ qla2x00_configure_fabric(scsi_qla_host_t *vha)
fcport->scan_state = QLA_FCPORT_SCAN;
}
+ /* Mark the time right before querying FW for connected ports.
+ * This process is long, asynchronous and by the time it's done,
+ * collected information might not be accurate anymore. E.g.
+ * disconnected port might have re-connected and a brand new
+ * session has been created. In this case session's generation
+ * will be newer than discovery_gen. */
+ qlt_do_generation_tick(vha, &discovery_gen);
+
rval = qla2x00_find_all_fabric_devs(vha, &new_fcports);
if (rval != QLA_SUCCESS)
break;
@@ -3454,7 +3453,8 @@ qla2x00_configure_fabric(scsi_qla_host_t *vha)
atomic_read(&fcport->state),
fcport->flags, fcport->fc4_type,
fcport->scan_state);
- qlt_fc_port_deleted(vha, fcport);
+ qlt_fc_port_deleted(vha, fcport,
+ discovery_gen);
}
}
}
@@ -4231,6 +4231,14 @@ qla2x00_update_fcports(scsi_qla_host_t *base_vha)
atomic_read(&fcport->state) != FCS_UNCONFIGURED) {
spin_unlock_irqrestore(&ha->vport_slock, flags);
qla2x00_rport_del(fcport);
+
+ /*
+ * Release the target mode FC NEXUS in
+ * qla_target.c, if target mod is enabled.
+ */
+ qlt_fc_port_deleted(vha, fcport,
+ base_vha->total_fcport_update_gen);
+
spin_lock_irqsave(&ha->vport_slock, flags);
}
}
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index a0b0656..3a0a3ce 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -3229,11 +3229,14 @@ qla2x00_schedule_rport_del(struct scsi_qla_host *vha, fc_port_t *fcport,
spin_lock_irqsave(vha->host->host_lock, flags);
fcport->drport = rport;
spin_unlock_irqrestore(vha->host->host_lock, flags);
+ qlt_do_generation_tick(vha, &base_vha->total_fcport_update_gen);
set_bit(FCPORT_UPDATE_NEEDED, &base_vha->dpc_flags);
qla2xxx_wake_dpc(base_vha);
} else {
+ int now;
fc_remote_port_delete(rport);
- qlt_fc_port_deleted(vha, fcport);
+ qlt_do_generation_tick(vha, &now);
+ qlt_fc_port_deleted(vha, fcport, now);
}
}
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 3e63424..d9ae08a 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -127,6 +127,16 @@ static struct workqueue_struct *qla_tgt_wq;
static DEFINE_MUTEX(qla_tgt_mutex);
static LIST_HEAD(qla_tgt_glist);
+/* This API intentionally takes dest as a parameter, rather than returning
+ * int value to avoid caller forgetting to issue wmb() after the store */
+void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
+{
+ scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
+ *dest = atomic_inc_return(&base_vha->generation_tick);
+ /* memory barrier */
+ wmb();
+}
+
/* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */
static struct qla_tgt_sess *qlt_find_sess_by_port_name(
struct qla_tgt *tgt,
@@ -576,10 +586,12 @@ static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess,
sess->expires = jiffies + dev_loss_tmo * HZ;
ql_dbg(ql_dbg_tgt, sess->vha, 0xe048,
- "qla_target(%d): session for port %8phC (loop ID %d) scheduled for "
- "deletion in %u secs (expires: %lu) immed: %d, logout: %d\n",
- sess->vha->vp_idx, sess->port_name, sess->loop_id, dev_loss_tmo,
- sess->expires, immediate, sess->logout_on_delete);
+ "qla_target(%d): session for port %8phC (loop ID %d s_id %02x:%02x:%02x)"
+ " scheduled for deletion in %u secs (expires: %lu) immed: %d, logout: %d, gen: %#x\n",
+ sess->vha->vp_idx, sess->port_name, sess->loop_id,
+ sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa,
+ dev_loss_tmo, sess->expires, immediate, sess->logout_on_delete,
+ sess->generation);
if (immediate)
mod_delayed_work(system_wq, &tgt->sess_del_work, 0);
@@ -734,6 +746,9 @@ static struct qla_tgt_sess *qlt_create_sess(
if (sess->local && !local)
sess->local = 0;
+
+ qlt_do_generation_tick(vha, &sess->generation);
+
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return sess;
@@ -795,6 +810,7 @@ static struct qla_tgt_sess *qlt_create_sess(
spin_lock_irqsave(&ha->hardware_lock, flags);
list_add_tail(&sess->sess_list_entry, &vha->vha_tgt.qla_tgt->sess_list);
vha->vha_tgt.qla_tgt->sess_count++;
+ qlt_do_generation_tick(vha, &sess->generation);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
@@ -808,7 +824,7 @@ static struct qla_tgt_sess *qlt_create_sess(
}
/*
- * Called from drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port()
+ * Called from qla2x00_reg_remote_port()
*/
void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
{
@@ -874,7 +890,12 @@ void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
-void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
+/*
+ * max_gen - specifies maximum session generation
+ * at which this deletion requestion is still valid
+ */
+void
+qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen)
{
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
struct qla_tgt_sess *sess;
@@ -893,6 +914,15 @@ void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
return;
}
+ if (max_gen - sess->generation < 0) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092,
+ "Ignoring stale deletion request for se_sess %p / sess %p"
+ " for port %8phC, req_gen %d, sess_gen %d\n",
+ sess->se_sess, sess, sess->port_name, max_gen,
+ sess->generation);
+ return;
+ }
+
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
sess->local = 1;
@@ -3971,7 +4001,7 @@ void qlt_logo_completion_handler(fc_port_t *fcport, int rc)
{
if (fcport->tgt_session) {
if (rc != MBS_COMMAND_COMPLETE) {
- ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf088,
+ ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093,
"%s: se_sess %p / sess %p from"
" port %8phC loop_id %#04x s_id %02x:%02x:%02x"
" LOGO failed: %#x\n",
@@ -4100,6 +4130,7 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
struct imm_ntfy_from_isp *iocb)
{
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ struct qla_hw_data *ha = vha->hw;
struct qla_tgt_sess *sess = NULL;
uint64_t wwn;
port_id_t port_id;
@@ -4145,7 +4176,7 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
* without acking, new one will get acked when session
* deletion completes.
*/
- ql_log(ql_log_warn, sess->vha, 0xf089,
+ ql_log(ql_log_warn, sess->vha, 0xf094,
"sess %p received double plogi.\n", sess);
qlt_swap_imm_ntfy_iocb(iocb, &sess->tm_iocb);
@@ -4202,7 +4233,7 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
* PLOGI could finish. Will force him to re-try,
* while last one finishes.
*/
- ql_log(ql_log_warn, sess->vha, 0xf090,
+ ql_log(ql_log_warn, sess->vha, 0xf095,
"sess %p PRLI received, before plogi ack.\n",
sess);
qlt_send_term_imm_notif(vha, iocb, 1);
@@ -4214,7 +4245,7 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
* This shouldn't happen under normal circumstances,
* since we have deleted the old session during PLOGI
*/
- ql_dbg(ql_dbg_tgt_mgt, vha, 0xf091,
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096,
"PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n",
sess->loop_id, sess, iocb->u.isp24.nport_handle);
@@ -4225,7 +4256,14 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
if (wd3_lo & BIT_7)
sess->conf_compl_supported = 1;
- res = 1;
+ }
+ res = 1; /* send notify ack */
+
+ /* Make session global (not used in fabric mode) */
+ if (ha->current_topology != ISP_CFG_F) {
+ set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
+ set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
+ qla2xxx_wake_dpc(vha);
} else {
/* todo: else - create sess here. */
res = 1; /* send notify ack */
diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h
index 13b3b0d..dfc60c7 100644
--- a/drivers/scsi/qla2xxx/qla_target.h
+++ b/drivers/scsi/qla2xxx/qla_target.h
@@ -919,6 +919,8 @@ struct qla_tgt_sess {
unsigned char logout_completed;
+ int generation;
+
struct se_session *se_sess;
struct scsi_qla_host *vha;
struct qla_tgt *tgt;
@@ -1084,7 +1086,7 @@ extern int qlt_lport_register(void *, u64, u64, u64,
extern void qlt_lport_deregister(struct scsi_qla_host *);
extern void qlt_unreg_sess(struct qla_tgt_sess *);
extern void qlt_fc_port_added(struct scsi_qla_host *, fc_port_t *);
-extern void qlt_fc_port_deleted(struct scsi_qla_host *, fc_port_t *);
+extern void qlt_fc_port_deleted(struct scsi_qla_host *, fc_port_t *, int);
extern int __init qlt_init(void);
extern void qlt_exit(void);
extern void qlt_update_vp_map(struct scsi_qla_host *, int);
@@ -1161,5 +1163,6 @@ extern irqreturn_t qla83xx_msix_atio_q(int, void *);
extern void qlt_83xx_iospace_config(struct qla_hw_data *);
extern int qlt_free_qfull_cmds(struct scsi_qla_host *);
extern void qlt_logo_completion_handler(fc_port_t *, int);
+extern void qlt_do_generation_tick(struct scsi_qla_host *, int *);
#endif /* __QLA_TARGET_H */
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 084/130] qla2xxx: disable scsi_transport_fc registration in target mode
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (82 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 083/130] qla2xxx: added sess generations to detect RSCN update races Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 085/130] qla2xxx: drop cmds/tmrs arrived while session is being deleted Kamal Mostafa
` (45 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Alexei Potashnik, Himanshu Madhani, Nicholas Bellinger,
Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexei Potashnik <alexei@purestorage.com>
commit d20ed91bb60ca54c42e3326251287ec51ed225a1 upstream.
There are multiple reasons for disabling this:
1. It provides no functional benefit. We pretty much only get a few more
sysfs entries for each port, but all that information is already
available from /sys/kernel/debug/target/qla-session-X
2. It already only works in private-loop mode. By disabling we'll be
getting more uniform behavior with fabric mode.
3. It creates complications for the new PLOGI handling mechanism:
scsi_transport_fc port deletion timer could race with new session
from initiator and cause logout after successful login.
Signed-off-by: Alexei Potashnik <alexei@purestorage.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/qla2xxx/qla_init.c | 14 +++++++++++---
drivers/scsi/qla2xxx/qla_os.c | 3 ++-
2 files changed, 13 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 664ea17..99fef23 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -3289,8 +3289,7 @@ qla2x00_update_fcport(scsi_qla_host_t *vha, fc_port_t *fcport)
if (IS_QLAFX00(vha->hw)) {
qla2x00_set_fcport_state(fcport, FCS_ONLINE);
- qla2x00_reg_remote_port(vha, fcport);
- return;
+ goto reg_port;
}
fcport->login_retry = 0;
fcport->flags &= ~(FCF_LOGIN_NEEDED | FCF_ASYNC_SENT);
@@ -3298,7 +3297,16 @@ qla2x00_update_fcport(scsi_qla_host_t *vha, fc_port_t *fcport)
qla2x00_set_fcport_state(fcport, FCS_ONLINE);
qla2x00_iidma_fcport(vha, fcport);
qla24xx_update_fcport_fcp_prio(vha, fcport);
- qla2x00_reg_remote_port(vha, fcport);
+
+reg_port:
+ if (qla_ini_mode_enabled(vha))
+ qla2x00_reg_remote_port(vha, fcport);
+ else {
+ /*
+ * Create target mode FC NEXUS in qla_target.c
+ */
+ qlt_fc_port_added(vha, fcport);
+ }
}
/*
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 3a0a3ce..56d8684 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -3234,7 +3234,8 @@ qla2x00_schedule_rport_del(struct scsi_qla_host *vha, fc_port_t *fcport,
qla2xxx_wake_dpc(base_vha);
} else {
int now;
- fc_remote_port_delete(rport);
+ if (rport)
+ fc_remote_port_delete(rport);
qlt_do_generation_tick(vha, &now);
qlt_fc_port_deleted(vha, fcport, now);
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 085/130] qla2xxx: drop cmds/tmrs arrived while session is being deleted
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (83 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 084/130] qla2xxx: disable scsi_transport_fc registration in target mode Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 086/130] qla2xxx: terminate exchange when command is aborted by LIO Kamal Mostafa
` (44 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Alexei Potashnik, Himanshu Madhani, Nicholas Bellinger,
Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexei Potashnik <alexei@purestorage.com>
commit e52a8b45b9c782937f74b701f8c656d4e5619eb5 upstream.
If a new initiator (different WWN) shows up on the same fcport, old
initiator's session is scheduled for deletion. But there is a small
window between it being marked with QLA_SESS_DELETION_IN_PROGRESS
and qlt_unret_sess getting called when new session's commands will
keep finding old session in the fcport map.
This patch drops cmds/tmrs if they find session in the progress of
being deleted.
Signed-off-by: Alexei Potashnik <alexei@purestorage.com>
Acked-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/qla2xxx/qla_target.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index d9ae08a..6c66a31 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -1477,6 +1477,11 @@ static void qlt_24xx_handle_abts(struct scsi_qla_host *vha,
return;
}
+ if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
+ qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
+ return;
+ }
+
rc = __qlt_24xx_handle_abts(vha, abts, sess);
if (rc != 0) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054,
@@ -3769,6 +3774,16 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
queue_work(qla_tgt_wq, &op->work);
return 0;
}
+
+ /* Another WWN used to have our s_id. Our PLOGI scheduled its
+ * session deletion, but it's still in sess_del_work wq */
+ if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
+ ql_dbg(ql_dbg_io, vha, 0x3061,
+ "New command while old session %p is being deleted\n",
+ sess);
+ return -EFAULT;
+ }
+
/*
* Do kref_get() before returning + dropping qla_hw_data->hardware_lock.
*/
@@ -3932,6 +3947,9 @@ static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
sizeof(struct atio_from_isp));
}
+ if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS)
+ return -EFAULT;
+
return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
}
@@ -5606,6 +5624,11 @@ static void qlt_abort_work(struct qla_tgt *tgt,
if (!sess)
goto out_term;
} else {
+ if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
+ sess = NULL;
+ goto out_term;
+ }
+
kref_get(&sess->se_sess->sess_kref);
}
@@ -5660,6 +5683,11 @@ static void qlt_tmr_work(struct qla_tgt *tgt,
if (!sess)
goto out_term;
} else {
+ if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
+ sess = NULL;
+ goto out_term;
+ }
+
kref_get(&sess->se_sess->sess_kref);
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 086/130] qla2xxx: terminate exchange when command is aborted by LIO
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (84 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 085/130] qla2xxx: drop cmds/tmrs arrived while session is being deleted Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 087/130] iscsi-target: Fix use-after-free during TPG session shutdown Kamal Mostafa
` (43 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Alexei Potashnik, Himanshu Madhani, Nicholas Bellinger,
Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexei Potashnik <alexei@purestorage.com>
commit 7359df25a53386dd33c223672bbd12cb49d0ce4f upstream.
The newly introduced aborted_task TFO callback has to terminate
exchange with QLogic driver, since command is being deleted and
no status will be queued to the driver at a later point.
This patch also moves the burden of releasing one cmd refcount to
the aborted_task handler.
Changed iSCSI aborted_task logic to satisfy the above requirement.
Signed-off-by: Alexei Potashnik <alexei@purestorage.com>
Acked-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
[ kamal: backport to 3.19-stable: s/se_cmd->tag/cmd->tag/ ]
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/qla2xxx/qla_target.c | 34 ++++++++++++++++------------------
drivers/scsi/qla2xxx/qla_target.h | 9 +--------
drivers/scsi/qla2xxx/tcm_qla2xxx.c | 11 +----------
3 files changed, 18 insertions(+), 36 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 6c66a31..a033912 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -1924,21 +1924,6 @@ static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
struct qla_hw_data *ha = vha->hw;
struct se_cmd *se_cmd = &cmd->se_cmd;
- if (unlikely(cmd->aborted)) {
- ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
- "qla_target(%d): terminating exchange "
- "for aborted cmd=%p (se_cmd=%p, tag=%d)", vha->vp_idx, cmd,
- se_cmd, cmd->tag);
-
- cmd->state = QLA_TGT_STATE_ABORTED;
- cmd->cmd_flags |= BIT_6;
-
- qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
-
- /* !! At this point cmd could be already freed !! */
- return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
- }
-
prm->cmd = cmd;
prm->tgt = tgt;
prm->rq_result = scsi_status;
@@ -2526,9 +2511,6 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
&full_req_cnt);
if (unlikely(res != 0)) {
- if (res == QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED)
- return 0;
-
return res;
}
@@ -3094,6 +3076,22 @@ static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
}
+void qlt_abort_cmd(struct qla_tgt_cmd *cmd)
+{
+ struct qla_tgt *tgt = cmd->tgt;
+ struct scsi_qla_host *vha = tgt->vha;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
+ "qla_target(%d): terminating exchange for aborted cmd=%p "
+ "(se_cmd=%p, tag=%d)", vha->vp_idx, cmd, &cmd->se_cmd, cmd->tag);
+
+ cmd->state = QLA_TGT_STATE_ABORTED;
+ cmd->cmd_flags |= BIT_6;
+
+ qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
+}
+EXPORT_SYMBOL(qlt_abort_cmd);
+
void qlt_free_cmd(struct qla_tgt_cmd *cmd)
{
struct qla_tgt_sess *sess = cmd->sess;
diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h
index dfc60c7..d30c60a 100644
--- a/drivers/scsi/qla2xxx/qla_target.h
+++ b/drivers/scsi/qla2xxx/qla_target.h
@@ -808,13 +808,6 @@ int qla2x00_wait_for_hba_online(struct scsi_qla_host *);
#define FC_TM_REJECT 4
#define FC_TM_FAILED 5
-/*
- * Error code of qlt_pre_xmit_response() meaning that cmd's exchange was
- * terminated, so no more actions is needed and success should be returned
- * to target.
- */
-#define QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED 0x1717
-
#if (BITS_PER_LONG > 32) || defined(CONFIG_HIGHMEM64G)
#define pci_dma_lo32(a) (a & 0xffffffff)
#define pci_dma_hi32(a) ((((a) >> 16)>>16) & 0xffffffff)
@@ -950,7 +943,6 @@ struct qla_tgt_cmd {
unsigned int conf_compl_supported:1;
unsigned int sg_mapped:1;
unsigned int free_sg:1;
- unsigned int aborted:1; /* Needed in case of SRR */
unsigned int write_data_transferred:1;
unsigned int ctx_dsd_alloced:1;
unsigned int q_full:1;
@@ -1132,6 +1124,7 @@ static inline uint32_t sid_to_key(const uint8_t *s_id)
extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, response_t *);
extern int qlt_rdy_to_xfer(struct qla_tgt_cmd *);
extern int qlt_xmit_response(struct qla_tgt_cmd *, int, uint8_t);
+extern void qlt_abort_cmd(struct qla_tgt_cmd *);
extern void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *);
extern void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *);
extern void qlt_free_cmd(struct qla_tgt_cmd *cmd);
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index 48dc2df..a82db70 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -662,7 +662,6 @@ static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
cmd->cmd_flags |= BIT_4;
cmd->bufflen = se_cmd->data_length;
cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
- cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
cmd->sg_cnt = se_cmd->t_data_nents;
cmd->sg = se_cmd->t_data_sg;
@@ -692,7 +691,6 @@ static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
cmd->sg_cnt = 0;
cmd->offset = 0;
cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
- cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
if (cmd->cmd_flags & BIT_5) {
pr_crit("Bit_5 already set for cmd = %p.\n", cmd);
dump_stack();
@@ -757,14 +755,7 @@ static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
{
struct qla_tgt_cmd *cmd = container_of(se_cmd,
struct qla_tgt_cmd, se_cmd);
- struct scsi_qla_host *vha = cmd->vha;
- struct qla_hw_data *ha = vha->hw;
-
- if (!cmd->sg_mapped)
- return;
-
- pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
- cmd->sg_mapped = 0;
+ qlt_abort_cmd(cmd);
}
static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 087/130] iscsi-target: Fix use-after-free during TPG session shutdown
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (85 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 086/130] qla2xxx: terminate exchange when command is aborted by LIO Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 088/130] iscsi-target: Convert iscsi_thread_set usage to kthread.h Kamal Mostafa
` (42 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Sunilkumar Nadumuttlu, Nicholas Bellinger, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Nicholas Bellinger <nab@linux-iscsi.org>
commit 417c20a9bdd1e876384127cf096d8ae8b559066c upstream.
This patch fixes a use-after-free bug in iscsit_release_sessions_for_tpg()
where se_portal_group->session_lock was incorrectly released/re-acquired
while walking the active se_portal_group->tpg_sess_list.
The can result in a NULL pointer dereference when iscsit_close_session()
shutdown happens in the normal path asynchronously to this code, causing
a bogus dereference of an already freed list entry to occur.
To address this bug, walk the session list checking for the same state
as before, but move entries to a local list to avoid dropping the lock
while walking the active list.
As before, signal using iscsi_session->session_restatement=1 for those
list entries to be released locally by iscsit_free_session() code.
Reported-by: Sunilkumar Nadumuttlu <sjn@datera.io>
Cc: Sunilkumar Nadumuttlu <sjn@datera.io>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/target/iscsi/iscsi_target.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 22d67c0..89eb2ab 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -4747,6 +4747,7 @@ int iscsit_release_sessions_for_tpg(struct iscsi_portal_group *tpg, int force)
struct iscsi_session *sess;
struct se_portal_group *se_tpg = &tpg->tpg_se_tpg;
struct se_session *se_sess, *se_sess_tmp;
+ LIST_HEAD(free_list);
int session_count = 0;
spin_lock_bh(&se_tpg->session_lock);
@@ -4768,14 +4769,17 @@ int iscsit_release_sessions_for_tpg(struct iscsi_portal_group *tpg, int force)
}
atomic_set(&sess->session_reinstatement, 1);
spin_unlock(&sess->conn_lock);
- spin_unlock_bh(&se_tpg->session_lock);
- iscsit_free_session(sess);
- spin_lock_bh(&se_tpg->session_lock);
+ list_move_tail(&se_sess->sess_list, &free_list);
+ }
+ spin_unlock_bh(&se_tpg->session_lock);
+ list_for_each_entry_safe(se_sess, se_sess_tmp, &free_list, sess_list) {
+ sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+
+ iscsit_free_session(sess);
session_count++;
}
- spin_unlock_bh(&se_tpg->session_lock);
pr_debug("Released %d iSCSI Session(s) from Target Portal"
" Group: %hu\n", session_count, tpg->tpgt);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 088/130] iscsi-target: Convert iscsi_thread_set usage to kthread.h
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (86 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 087/130] iscsi-target: Fix use-after-free during TPG session shutdown Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 089/130] iscsi-target: Fix iscsit_start_kthreads failure OOPs Kamal Mostafa
` (41 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Slava Shwartsman, Nicholas Bellinger, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Nicholas Bellinger <nab@linux-iscsi.org>
commit 88dcd2dab5c23b1c9cfc396246d8f476c872f0ca upstream.
This patch converts iscsi-target code to use modern kthread.h API
callers for creating RX/TX threads for each new iscsi_conn descriptor,
and releasing associated RX/TX threads during connection shutdown.
This is done using iscsit_start_kthreads() -> kthread_run() to start
new kthreads from within iscsi_post_login_handler(), and invoking
kthread_stop() from existing iscsit_close_connection() code.
Also, convert iscsit_logout_post_handler_closesession() code to use
cmpxchg when determing when iscsit_cause_connection_reinstatement()
needs to sleep waiting for completion.
Reported-by: Sagi Grimberg <sagig@mellanox.com>
Tested-by: Sagi Grimberg <sagig@mellanox.com>
Cc: Slava Shwartsman <valyushash@gmail.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
[ kamal: backport to 3.19-stable: iscsi_target_core.h path ]
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/target/iscsi/iscsi_target.c | 104 +++++++++++++-----------------
drivers/target/iscsi/iscsi_target_core.h | 7 ++
drivers/target/iscsi/iscsi_target_erl0.c | 13 ++--
drivers/target/iscsi/iscsi_target_login.c | 59 +++++++++++++++--
4 files changed, 114 insertions(+), 69 deletions(-)
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 89eb2ab..0b5a1e8 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -537,7 +537,7 @@ static struct iscsit_transport iscsi_target_transport = {
static int __init iscsi_target_init_module(void)
{
- int ret = 0;
+ int ret = 0, size;
pr_debug("iSCSI-Target "ISCSIT_VERSION"\n");
@@ -546,6 +546,7 @@ static int __init iscsi_target_init_module(void)
pr_err("Unable to allocate memory for iscsit_global\n");
return -1;
}
+ spin_lock_init(&iscsit_global->ts_bitmap_lock);
mutex_init(&auth_id_lock);
spin_lock_init(&sess_idr_lock);
idr_init(&tiqn_idr);
@@ -555,15 +556,11 @@ static int __init iscsi_target_init_module(void)
if (ret < 0)
goto out;
- ret = iscsi_thread_set_init();
- if (ret < 0)
+ size = BITS_TO_LONGS(ISCSIT_BITMAP_BITS) * sizeof(long);
+ iscsit_global->ts_bitmap = vzalloc(size);
+ if (!iscsit_global->ts_bitmap) {
+ pr_err("Unable to allocate iscsit_global->ts_bitmap\n");
goto configfs_out;
-
- if (iscsi_allocate_thread_sets(TARGET_THREAD_SET_COUNT) !=
- TARGET_THREAD_SET_COUNT) {
- pr_err("iscsi_allocate_thread_sets() returned"
- " unexpected value!\n");
- goto ts_out1;
}
lio_qr_cache = kmem_cache_create("lio_qr_cache",
@@ -572,7 +569,7 @@ static int __init iscsi_target_init_module(void)
if (!lio_qr_cache) {
pr_err("nable to kmem_cache_create() for"
" lio_qr_cache\n");
- goto ts_out2;
+ goto bitmap_out;
}
lio_dr_cache = kmem_cache_create("lio_dr_cache",
@@ -617,10 +614,8 @@ dr_out:
kmem_cache_destroy(lio_dr_cache);
qr_out:
kmem_cache_destroy(lio_qr_cache);
-ts_out2:
- iscsi_deallocate_thread_sets();
-ts_out1:
- iscsi_thread_set_free();
+bitmap_out:
+ vfree(iscsit_global->ts_bitmap);
configfs_out:
iscsi_target_deregister_configfs();
out:
@@ -630,8 +625,6 @@ out:
static void __exit iscsi_target_cleanup_module(void)
{
- iscsi_deallocate_thread_sets();
- iscsi_thread_set_free();
iscsit_release_discovery_tpg();
iscsit_unregister_transport(&iscsi_target_transport);
kmem_cache_destroy(lio_qr_cache);
@@ -641,6 +634,7 @@ static void __exit iscsi_target_cleanup_module(void)
iscsi_target_deregister_configfs();
+ vfree(iscsit_global->ts_bitmap);
kfree(iscsit_global);
}
@@ -3681,17 +3675,16 @@ static int iscsit_send_reject(
void iscsit_thread_get_cpumask(struct iscsi_conn *conn)
{
- struct iscsi_thread_set *ts = conn->thread_set;
int ord, cpu;
/*
- * thread_id is assigned from iscsit_global->ts_bitmap from
- * within iscsi_thread_set.c:iscsi_allocate_thread_sets()
+ * bitmap_id is assigned from iscsit_global->ts_bitmap from
+ * within iscsit_start_kthreads()
*
- * Here we use thread_id to determine which CPU that this
- * iSCSI connection's iscsi_thread_set will be scheduled to
+ * Here we use bitmap_id to determine which CPU that this
+ * iSCSI connection's RX/TX threads will be scheduled to
* execute upon.
*/
- ord = ts->thread_id % cpumask_weight(cpu_online_mask);
+ ord = conn->bitmap_id % cpumask_weight(cpu_online_mask);
for_each_online_cpu(cpu) {
if (ord-- == 0) {
cpumask_set_cpu(cpu, conn->conn_cpumask);
@@ -3880,7 +3873,7 @@ check_rsp_state:
switch (state) {
case ISTATE_SEND_LOGOUTRSP:
if (!iscsit_logout_post_handler(cmd, conn))
- goto restart;
+ return -ECONNRESET;
/* fall through */
case ISTATE_SEND_STATUS:
case ISTATE_SEND_ASYNCMSG:
@@ -3908,8 +3901,6 @@ check_rsp_state:
err:
return -1;
-restart:
- return -EAGAIN;
}
static int iscsit_handle_response_queue(struct iscsi_conn *conn)
@@ -3936,21 +3927,13 @@ static int iscsit_handle_response_queue(struct iscsi_conn *conn)
int iscsi_target_tx_thread(void *arg)
{
int ret = 0;
- struct iscsi_conn *conn;
- struct iscsi_thread_set *ts = arg;
+ struct iscsi_conn *conn = arg;
/*
* Allow ourselves to be interrupted by SIGINT so that a
* connection recovery / failure event can be triggered externally.
*/
allow_signal(SIGINT);
-restart:
- conn = iscsi_tx_thread_pre_handler(ts);
- if (!conn)
- goto out;
-
- ret = 0;
-
while (!kthread_should_stop()) {
/*
* Ensure that both TX and RX per connection kthreads
@@ -3959,11 +3942,9 @@ restart:
iscsit_thread_check_cpumask(conn, current, 1);
wait_event_interruptible(conn->queues_wq,
- !iscsit_conn_all_queues_empty(conn) ||
- ts->status == ISCSI_THREAD_SET_RESET);
+ !iscsit_conn_all_queues_empty(conn));
- if ((ts->status == ISCSI_THREAD_SET_RESET) ||
- signal_pending(current))
+ if (signal_pending(current))
goto transport_err;
get_immediate:
@@ -3974,15 +3955,14 @@ get_immediate:
ret = iscsit_handle_response_queue(conn);
if (ret == 1)
goto get_immediate;
- else if (ret == -EAGAIN)
- goto restart;
+ else if (ret == -ECONNRESET)
+ goto out;
else if (ret < 0)
goto transport_err;
}
transport_err:
iscsit_take_action_for_connection_exit(conn);
- goto restart;
out:
return 0;
}
@@ -4071,8 +4051,7 @@ int iscsi_target_rx_thread(void *arg)
int ret;
u8 buffer[ISCSI_HDR_LEN], opcode;
u32 checksum = 0, digest = 0;
- struct iscsi_conn *conn = NULL;
- struct iscsi_thread_set *ts = arg;
+ struct iscsi_conn *conn = arg;
struct kvec iov;
/*
* Allow ourselves to be interrupted by SIGINT so that a
@@ -4080,11 +4059,6 @@ int iscsi_target_rx_thread(void *arg)
*/
allow_signal(SIGINT);
-restart:
- conn = iscsi_rx_thread_pre_handler(ts);
- if (!conn)
- goto out;
-
if (conn->conn_transport->transport_type == ISCSI_INFINIBAND) {
struct completion comp;
int rc;
@@ -4094,7 +4068,7 @@ restart:
if (rc < 0)
goto transport_err;
- goto out;
+ goto transport_err;
}
while (!kthread_should_stop()) {
@@ -4170,8 +4144,6 @@ transport_err:
if (!signal_pending(current))
atomic_set(&conn->transport_failed, 1);
iscsit_take_action_for_connection_exit(conn);
- goto restart;
-out:
return 0;
}
@@ -4233,7 +4205,24 @@ int iscsit_close_connection(
if (conn->conn_transport->transport_type == ISCSI_TCP)
complete(&conn->conn_logout_comp);
- iscsi_release_thread_set(conn);
+ if (!strcmp(current->comm, ISCSI_RX_THREAD_NAME)) {
+ if (conn->tx_thread &&
+ cmpxchg(&conn->tx_thread_active, true, false)) {
+ send_sig(SIGINT, conn->tx_thread, 1);
+ kthread_stop(conn->tx_thread);
+ }
+ } else if (!strcmp(current->comm, ISCSI_TX_THREAD_NAME)) {
+ if (conn->rx_thread &&
+ cmpxchg(&conn->rx_thread_active, true, false)) {
+ send_sig(SIGINT, conn->rx_thread, 1);
+ kthread_stop(conn->rx_thread);
+ }
+ }
+
+ spin_lock(&iscsit_global->ts_bitmap_lock);
+ bitmap_release_region(iscsit_global->ts_bitmap, conn->bitmap_id,
+ get_order(1));
+ spin_unlock(&iscsit_global->ts_bitmap_lock);
iscsit_stop_timers_for_cmds(conn);
iscsit_stop_nopin_response_timer(conn);
@@ -4511,15 +4500,13 @@ static void iscsit_logout_post_handler_closesession(
struct iscsi_conn *conn)
{
struct iscsi_session *sess = conn->sess;
-
- iscsi_set_thread_clear(conn, ISCSI_CLEAR_TX_THREAD);
- iscsi_set_thread_set_signal(conn, ISCSI_SIGNAL_TX_THREAD);
+ int sleep = cmpxchg(&conn->tx_thread_active, true, false);
atomic_set(&conn->conn_logout_remove, 0);
complete(&conn->conn_logout_comp);
iscsit_dec_conn_usage_count(conn);
- iscsit_stop_session(sess, 1, 1);
+ iscsit_stop_session(sess, sleep, sleep);
iscsit_dec_session_usage_count(sess);
target_put_session(sess->se_sess);
}
@@ -4527,13 +4514,12 @@ static void iscsit_logout_post_handler_closesession(
static void iscsit_logout_post_handler_samecid(
struct iscsi_conn *conn)
{
- iscsi_set_thread_clear(conn, ISCSI_CLEAR_TX_THREAD);
- iscsi_set_thread_set_signal(conn, ISCSI_SIGNAL_TX_THREAD);
+ int sleep = cmpxchg(&conn->tx_thread_active, true, false);
atomic_set(&conn->conn_logout_remove, 0);
complete(&conn->conn_logout_comp);
- iscsit_cause_connection_reinstatement(conn, 1);
+ iscsit_cause_connection_reinstatement(conn, sleep);
iscsit_dec_conn_usage_count(conn);
}
diff --git a/drivers/target/iscsi/iscsi_target_core.h b/drivers/target/iscsi/iscsi_target_core.h
index cbcff38..5dfd179 100644
--- a/drivers/target/iscsi/iscsi_target_core.h
+++ b/drivers/target/iscsi/iscsi_target_core.h
@@ -602,6 +602,11 @@ struct iscsi_conn {
struct iscsi_session *sess;
/* Pointer to thread_set in use for this conn's threads */
struct iscsi_thread_set *thread_set;
+ int bitmap_id;
+ int rx_thread_active;
+ struct task_struct *rx_thread;
+ int tx_thread_active;
+ struct task_struct *tx_thread;
/* list_head for session connection list */
struct list_head conn_list;
} ____cacheline_aligned;
@@ -871,10 +876,12 @@ struct iscsit_global {
/* Unique identifier used for the authentication daemon */
u32 auth_id;
u32 inactive_ts;
+#define ISCSIT_BITMAP_BITS 262144
/* Thread Set bitmap count */
int ts_bitmap_count;
/* Thread Set bitmap pointer */
unsigned long *ts_bitmap;
+ spinlock_t ts_bitmap_lock;
/* Used for iSCSI discovery session authentication */
struct iscsi_node_acl discovery_acl;
struct iscsi_portal_group *discovery_tpg;
diff --git a/drivers/target/iscsi/iscsi_target_erl0.c b/drivers/target/iscsi/iscsi_target_erl0.c
index a0ae5fc..87f6872 100644
--- a/drivers/target/iscsi/iscsi_target_erl0.c
+++ b/drivers/target/iscsi/iscsi_target_erl0.c
@@ -860,7 +860,10 @@ void iscsit_connection_reinstatement_rcfr(struct iscsi_conn *conn)
}
spin_unlock_bh(&conn->state_lock);
- iscsi_thread_set_force_reinstatement(conn);
+ if (conn->tx_thread && conn->tx_thread_active)
+ send_sig(SIGINT, conn->tx_thread, 1);
+ if (conn->rx_thread && conn->rx_thread_active)
+ send_sig(SIGINT, conn->rx_thread, 1);
sleep:
wait_for_completion(&conn->conn_wait_rcfr_comp);
@@ -885,10 +888,10 @@ void iscsit_cause_connection_reinstatement(struct iscsi_conn *conn, int sleep)
return;
}
- if (iscsi_thread_set_force_reinstatement(conn) < 0) {
- spin_unlock_bh(&conn->state_lock);
- return;
- }
+ if (conn->tx_thread && conn->tx_thread_active)
+ send_sig(SIGINT, conn->tx_thread, 1);
+ if (conn->rx_thread && conn->rx_thread_active)
+ send_sig(SIGINT, conn->rx_thread, 1);
atomic_set(&conn->connection_reinstatement, 1);
if (!sleep) {
diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index 713c0c1..3b55fe1 100644
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -699,6 +699,51 @@ static void iscsi_post_login_start_timers(struct iscsi_conn *conn)
iscsit_start_nopin_timer(conn);
}
+int iscsit_start_kthreads(struct iscsi_conn *conn)
+{
+ int ret = 0;
+
+ spin_lock(&iscsit_global->ts_bitmap_lock);
+ conn->bitmap_id = bitmap_find_free_region(iscsit_global->ts_bitmap,
+ ISCSIT_BITMAP_BITS, get_order(1));
+ spin_unlock(&iscsit_global->ts_bitmap_lock);
+
+ if (conn->bitmap_id < 0) {
+ pr_err("bitmap_find_free_region() failed for"
+ " iscsit_start_kthreads()\n");
+ return -ENOMEM;
+ }
+
+ conn->tx_thread = kthread_run(iscsi_target_tx_thread, conn,
+ "%s", ISCSI_TX_THREAD_NAME);
+ if (IS_ERR(conn->tx_thread)) {
+ pr_err("Unable to start iscsi_target_tx_thread\n");
+ ret = PTR_ERR(conn->tx_thread);
+ goto out_bitmap;
+ }
+ conn->tx_thread_active = true;
+
+ conn->rx_thread = kthread_run(iscsi_target_rx_thread, conn,
+ "%s", ISCSI_RX_THREAD_NAME);
+ if (IS_ERR(conn->rx_thread)) {
+ pr_err("Unable to start iscsi_target_rx_thread\n");
+ ret = PTR_ERR(conn->rx_thread);
+ goto out_tx;
+ }
+ conn->rx_thread_active = true;
+
+ return 0;
+out_tx:
+ kthread_stop(conn->tx_thread);
+ conn->tx_thread_active = false;
+out_bitmap:
+ spin_lock(&iscsit_global->ts_bitmap_lock);
+ bitmap_release_region(iscsit_global->ts_bitmap, conn->bitmap_id,
+ get_order(1));
+ spin_unlock(&iscsit_global->ts_bitmap_lock);
+ return ret;
+}
+
int iscsi_post_login_handler(
struct iscsi_np *np,
struct iscsi_conn *conn,
@@ -709,7 +754,7 @@ int iscsi_post_login_handler(
struct se_session *se_sess = sess->se_sess;
struct iscsi_portal_group *tpg = sess->tpg;
struct se_portal_group *se_tpg = &tpg->tpg_se_tpg;
- struct iscsi_thread_set *ts;
+ int rc;
iscsit_inc_conn_usage_count(conn);
@@ -724,7 +769,6 @@ int iscsi_post_login_handler(
/*
* SCSI Initiator -> SCSI Target Port Mapping
*/
- ts = iscsi_get_thread_set();
if (!zero_tsih) {
iscsi_set_session_parameters(sess->sess_ops,
conn->param_list, 0);
@@ -751,9 +795,11 @@ int iscsi_post_login_handler(
sess->sess_ops->InitiatorName);
spin_unlock_bh(&sess->conn_lock);
- iscsi_post_login_start_timers(conn);
+ rc = iscsit_start_kthreads(conn);
+ if (rc)
+ return rc;
- iscsi_activate_thread_set(conn, ts);
+ iscsi_post_login_start_timers(conn);
/*
* Determine CPU mask to ensure connection's RX and TX kthreads
* are scheduled on the same CPU.
@@ -810,8 +856,11 @@ int iscsi_post_login_handler(
" iSCSI Target Portal Group: %hu\n", tpg->nsessions, tpg->tpgt);
spin_unlock_bh(&se_tpg->session_lock);
+ rc = iscsit_start_kthreads(conn);
+ if (rc)
+ return rc;
+
iscsi_post_login_start_timers(conn);
- iscsi_activate_thread_set(conn, ts);
/*
* Determine CPU mask to ensure connection's RX and TX kthreads
* are scheduled on the same CPU.
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 089/130] iscsi-target: Fix iscsit_start_kthreads failure OOPs
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (87 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 088/130] iscsi-target: Convert iscsi_thread_set usage to kthread.h Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 090/130] iscsi-target: Fix iser explicit logout TX kthread leak Kamal Mostafa
` (40 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Sagi Grimberg, Nicholas Bellinger, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Nicholas Bellinger <nab@linux-iscsi.org>
commit e54198657b65625085834847ab6271087323ffea upstream.
This patch fixes a regression introduced with the following commit
in v4.0-rc1 code, where a iscsit_start_kthreads() failure triggers
a NULL pointer dereference OOPs:
commit 88dcd2dab5c23b1c9cfc396246d8f476c872f0ca
Author: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Thu Feb 26 22:19:15 2015 -0800
iscsi-target: Convert iscsi_thread_set usage to kthread.h
To address this bug, move iscsit_start_kthreads() immediately
preceeding the transmit of last login response, before signaling
a successful transition into full-feature-phase within existing
iscsi_target_do_tx_login_io() logic.
This ensures that no target-side resource allocation failures can
occur after the final login response has been successfully sent.
Also, it adds a iscsi_conn->rx_login_comp to allow the RX thread
to sleep to prevent other socket related failures until the final
iscsi_post_login_handler() call is able to complete.
Cc: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
[ kamal: backport to 3.19-stable: iscsi_target_core.h path ]
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/target/iscsi/iscsi_target.c | 18 ++++++++++---
drivers/target/iscsi/iscsi_target_core.h | 1 +
drivers/target/iscsi/iscsi_target_login.c | 43 ++++++++++++-------------------
drivers/target/iscsi/iscsi_target_login.h | 3 ++-
drivers/target/iscsi/iscsi_target_nego.c | 34 +++++++++++++++++++++++-
5 files changed, 67 insertions(+), 32 deletions(-)
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 0b5a1e8..cc16d0b 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -3962,7 +3962,13 @@ get_immediate:
}
transport_err:
- iscsit_take_action_for_connection_exit(conn);
+ /*
+ * Avoid the normal connection failure code-path if this connection
+ * is still within LOGIN mode, and iscsi_np process context is
+ * responsible for cleaning up the early connection failure.
+ */
+ if (conn->conn_state != TARG_CONN_STATE_IN_LOGIN)
+ iscsit_take_action_for_connection_exit(conn);
out:
return 0;
}
@@ -4048,7 +4054,7 @@ reject:
int iscsi_target_rx_thread(void *arg)
{
- int ret;
+ int ret, rc;
u8 buffer[ISCSI_HDR_LEN], opcode;
u32 checksum = 0, digest = 0;
struct iscsi_conn *conn = arg;
@@ -4058,10 +4064,16 @@ int iscsi_target_rx_thread(void *arg)
* connection recovery / failure event can be triggered externally.
*/
allow_signal(SIGINT);
+ /*
+ * Wait for iscsi_post_login_handler() to complete before allowing
+ * incoming iscsi/tcp socket I/O, and/or failing the connection.
+ */
+ rc = wait_for_completion_interruptible(&conn->rx_login_comp);
+ if (rc < 0)
+ return 0;
if (conn->conn_transport->transport_type == ISCSI_INFINIBAND) {
struct completion comp;
- int rc;
init_completion(&comp);
rc = wait_for_completion_interruptible(&comp);
diff --git a/drivers/target/iscsi/iscsi_target_core.h b/drivers/target/iscsi/iscsi_target_core.h
index 5dfd179..fa4eb75 100644
--- a/drivers/target/iscsi/iscsi_target_core.h
+++ b/drivers/target/iscsi/iscsi_target_core.h
@@ -605,6 +605,7 @@ struct iscsi_conn {
int bitmap_id;
int rx_thread_active;
struct task_struct *rx_thread;
+ struct completion rx_login_comp;
int tx_thread_active;
struct task_struct *tx_thread;
/* list_head for session connection list */
diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index 3b55fe1..7451251 100644
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -83,6 +83,7 @@ static struct iscsi_login *iscsi_login_init_conn(struct iscsi_conn *conn)
init_completion(&conn->conn_logout_comp);
init_completion(&conn->rx_half_close_comp);
init_completion(&conn->tx_half_close_comp);
+ init_completion(&conn->rx_login_comp);
spin_lock_init(&conn->cmd_lock);
spin_lock_init(&conn->conn_usage_lock);
spin_lock_init(&conn->immed_queue_lock);
@@ -734,6 +735,7 @@ int iscsit_start_kthreads(struct iscsi_conn *conn)
return 0;
out_tx:
+ send_sig(SIGINT, conn->tx_thread, 1);
kthread_stop(conn->tx_thread);
conn->tx_thread_active = false;
out_bitmap:
@@ -744,7 +746,7 @@ out_bitmap:
return ret;
}
-int iscsi_post_login_handler(
+void iscsi_post_login_handler(
struct iscsi_np *np,
struct iscsi_conn *conn,
u8 zero_tsih)
@@ -754,7 +756,6 @@ int iscsi_post_login_handler(
struct se_session *se_sess = sess->se_sess;
struct iscsi_portal_group *tpg = sess->tpg;
struct se_portal_group *se_tpg = &tpg->tpg_se_tpg;
- int rc;
iscsit_inc_conn_usage_count(conn);
@@ -795,10 +796,6 @@ int iscsi_post_login_handler(
sess->sess_ops->InitiatorName);
spin_unlock_bh(&sess->conn_lock);
- rc = iscsit_start_kthreads(conn);
- if (rc)
- return rc;
-
iscsi_post_login_start_timers(conn);
/*
* Determine CPU mask to ensure connection's RX and TX kthreads
@@ -807,15 +804,20 @@ int iscsi_post_login_handler(
iscsit_thread_get_cpumask(conn);
conn->conn_rx_reset_cpumask = 1;
conn->conn_tx_reset_cpumask = 1;
-
+ /*
+ * Wakeup the sleeping iscsi_target_rx_thread() now that
+ * iscsi_conn is in TARG_CONN_STATE_LOGGED_IN state.
+ */
+ complete(&conn->rx_login_comp);
iscsit_dec_conn_usage_count(conn);
+
if (stop_timer) {
spin_lock_bh(&se_tpg->session_lock);
iscsit_stop_time2retain_timer(sess);
spin_unlock_bh(&se_tpg->session_lock);
}
iscsit_dec_session_usage_count(sess);
- return 0;
+ return;
}
iscsi_set_session_parameters(sess->sess_ops, conn->param_list, 1);
@@ -856,10 +858,6 @@ int iscsi_post_login_handler(
" iSCSI Target Portal Group: %hu\n", tpg->nsessions, tpg->tpgt);
spin_unlock_bh(&se_tpg->session_lock);
- rc = iscsit_start_kthreads(conn);
- if (rc)
- return rc;
-
iscsi_post_login_start_timers(conn);
/*
* Determine CPU mask to ensure connection's RX and TX kthreads
@@ -868,10 +866,12 @@ int iscsi_post_login_handler(
iscsit_thread_get_cpumask(conn);
conn->conn_rx_reset_cpumask = 1;
conn->conn_tx_reset_cpumask = 1;
-
+ /*
+ * Wakeup the sleeping iscsi_target_rx_thread() now that
+ * iscsi_conn is in TARG_CONN_STATE_LOGGED_IN state.
+ */
+ complete(&conn->rx_login_comp);
iscsit_dec_conn_usage_count(conn);
-
- return 0;
}
static void iscsi_handle_login_thread_timeout(unsigned long data)
@@ -1436,23 +1436,12 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
if (ret < 0)
goto new_sess_out;
- if (!conn->sess) {
- pr_err("struct iscsi_conn session pointer is NULL!\n");
- goto new_sess_out;
- }
-
iscsi_stop_login_thread_timer(np);
- if (signal_pending(current))
- goto new_sess_out;
-
if (ret == 1) {
tpg_np = conn->tpg_np;
- ret = iscsi_post_login_handler(np, conn, zero_tsih);
- if (ret < 0)
- goto new_sess_out;
-
+ iscsi_post_login_handler(np, conn, zero_tsih);
iscsit_deaccess_np(np, tpg, tpg_np);
}
diff --git a/drivers/target/iscsi/iscsi_target_login.h b/drivers/target/iscsi/iscsi_target_login.h
index 29d0983..55cbf45 100644
--- a/drivers/target/iscsi/iscsi_target_login.h
+++ b/drivers/target/iscsi/iscsi_target_login.h
@@ -12,7 +12,8 @@ extern int iscsit_accept_np(struct iscsi_np *, struct iscsi_conn *);
extern int iscsit_get_login_rx(struct iscsi_conn *, struct iscsi_login *);
extern int iscsit_put_login_tx(struct iscsi_conn *, struct iscsi_login *, u32);
extern void iscsit_free_conn(struct iscsi_np *, struct iscsi_conn *);
-extern int iscsi_post_login_handler(struct iscsi_np *, struct iscsi_conn *, u8);
+extern int iscsit_start_kthreads(struct iscsi_conn *);
+extern void iscsi_post_login_handler(struct iscsi_np *, struct iscsi_conn *, u8);
extern void iscsi_target_login_sess_out(struct iscsi_conn *, struct iscsi_np *,
bool, bool);
extern int iscsi_target_login_thread(void *);
diff --git a/drivers/target/iscsi/iscsi_target_nego.c b/drivers/target/iscsi/iscsi_target_nego.c
index 62a095f..092112e 100644
--- a/drivers/target/iscsi/iscsi_target_nego.c
+++ b/drivers/target/iscsi/iscsi_target_nego.c
@@ -17,6 +17,7 @@
******************************************************************************/
#include <linux/ctype.h>
+#include <linux/kthread.h>
#include <scsi/iscsi_proto.h>
#include <target/target_core_base.h>
#include <target/target_core_fabric.h>
@@ -361,10 +362,24 @@ static int iscsi_target_do_tx_login_io(struct iscsi_conn *conn, struct iscsi_log
ntohl(login_rsp->statsn), login->rsp_length);
padding = ((-login->rsp_length) & 3);
+ /*
+ * Before sending the last login response containing the transition
+ * bit for full-feature-phase, go ahead and start up TX/RX threads
+ * now to avoid potential resource allocation failures after the
+ * final login response has been sent.
+ */
+ if (login->login_complete) {
+ int rc = iscsit_start_kthreads(conn);
+ if (rc) {
+ iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
+ ISCSI_LOGIN_STATUS_NO_RESOURCES);
+ return -1;
+ }
+ }
if (conn->conn_transport->iscsit_put_login_tx(conn, login,
login->rsp_length + padding) < 0)
- return -1;
+ goto err;
login->rsp_length = 0;
mutex_lock(&sess->cmdsn_mutex);
@@ -373,6 +388,23 @@ static int iscsi_target_do_tx_login_io(struct iscsi_conn *conn, struct iscsi_log
mutex_unlock(&sess->cmdsn_mutex);
return 0;
+
+err:
+ if (login->login_complete) {
+ if (conn->rx_thread && conn->rx_thread_active) {
+ send_sig(SIGINT, conn->rx_thread, 1);
+ kthread_stop(conn->rx_thread);
+ }
+ if (conn->tx_thread && conn->tx_thread_active) {
+ send_sig(SIGINT, conn->tx_thread, 1);
+ kthread_stop(conn->tx_thread);
+ }
+ spin_lock(&iscsit_global->ts_bitmap_lock);
+ bitmap_release_region(iscsit_global->ts_bitmap, conn->bitmap_id,
+ get_order(1));
+ spin_unlock(&iscsit_global->ts_bitmap_lock);
+ }
+ return -1;
}
static void iscsi_target_sk_data_ready(struct sock *sk)
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 090/130] iscsi-target: Fix iser explicit logout TX kthread leak
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (88 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 089/130] iscsi-target: Fix iscsit_start_kthreads failure OOPs Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 091/130] iser-target: Fix REJECT CM event use-after-free OOPs Kamal Mostafa
` (39 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Sagi Grimberg, Nicholas Bellinger, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Nicholas Bellinger <nab@linux-iscsi.org>
commit 007d038bdf95ccfe2491d0078be54040d110fd06 upstream.
This patch fixes a regression introduced with the following commit
in v4.0-rc1 code, where an explicit iser-target logout would result
in ->tx_thread_active being incorrectly cleared by the logout post
handler, and subsequent TX kthread leak:
commit 88dcd2dab5c23b1c9cfc396246d8f476c872f0ca
Author: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Thu Feb 26 22:19:15 2015 -0800
iscsi-target: Convert iscsi_thread_set usage to kthread.h
To address this bug, change iscsit_logout_post_handler_closesession()
and iscsit_logout_post_handler_samecid() to only cmpxchg() on
->tx_thread_active for traditional iscsi/tcp connections.
This is required because iscsi/tcp connections are invoking logout
post handler logic directly from TX kthread context, while iser
connections are invoking logout post handler logic from a seperate
workqueue context.
Cc: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/target/iscsi/iscsi_target.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index cc16d0b..4e08d63 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -4512,7 +4512,18 @@ static void iscsit_logout_post_handler_closesession(
struct iscsi_conn *conn)
{
struct iscsi_session *sess = conn->sess;
- int sleep = cmpxchg(&conn->tx_thread_active, true, false);
+ int sleep = 1;
+ /*
+ * Traditional iscsi/tcp will invoke this logic from TX thread
+ * context during session logout, so clear tx_thread_active and
+ * sleep if iscsit_close_connection() has not already occured.
+ *
+ * Since iser-target invokes this logic from it's own workqueue,
+ * always sleep waiting for RX/TX thread shutdown to complete
+ * within iscsit_close_connection().
+ */
+ if (conn->conn_transport->transport_type == ISCSI_TCP)
+ sleep = cmpxchg(&conn->tx_thread_active, true, false);
atomic_set(&conn->conn_logout_remove, 0);
complete(&conn->conn_logout_comp);
@@ -4526,7 +4537,10 @@ static void iscsit_logout_post_handler_closesession(
static void iscsit_logout_post_handler_samecid(
struct iscsi_conn *conn)
{
- int sleep = cmpxchg(&conn->tx_thread_active, true, false);
+ int sleep = 1;
+
+ if (conn->conn_transport->transport_type == ISCSI_TCP)
+ sleep = cmpxchg(&conn->tx_thread_active, true, false);
atomic_set(&conn->conn_logout_remove, 0);
complete(&conn->conn_logout_comp);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 091/130] iser-target: Fix REJECT CM event use-after-free OOPs
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (89 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 090/130] iscsi-target: Fix iser explicit logout TX kthread leak Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-28 21:07 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 092/130] ARM: dts: i.MX35: Fix can support Kamal Mostafa
` (38 subsequent siblings)
129 siblings, 1 reply; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Sagi Grimberg, Nicholas Bellinger, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Nicholas Bellinger <nab@linux-iscsi.org>
commit ce9a9fc20a78ad1e5222fae3a83d105f2d2fb9b9 upstream.
This patch fixes a bug in iser-target code where the REJECT CM event
handler code currently performs a isert_put_conn() for the final
isert_conn->kref put, while iscsi_np process context is still blocked
in isert_get_login_rx().
Once isert_get_login_rx() is awoking due to login timeout, iscsi_np
process context will attempt to invoke iscsi_target_login_sess_out()
to cleanup iscsi_conn as expected, and calls isert_wait_conn() +
isert_free_conn() which triggers the use-after-free OOPs.
To address this bug, move the kref_get_unless_zero() call from
isert_connected_handler() into isert_connect_request() immediately
preceeding isert_rdma_accept() to ensure the CM handler cleanup
paths and isert_free_conn() are always operating with two refs.
Cc: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
[ kamal: backport to 3.19-stable: context ]
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/infiniband/ulp/isert/ib_isert.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index b7350d5..bd28c48 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -686,6 +686,17 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
ret = isert_rdma_post_recvl(isert_conn);
if (ret)
goto out_conn_dev;
+ /*
+ * Obtain the second reference now before isert_rdma_accept() to
+ * ensure that any initiator generated REJECT CM event that occurs
+ * asynchronously won't drop the last reference until the error path
+ * in iscsi_target_login_sess_out() does it's ->iscsit_free_conn() ->
+ * isert_free_conn() -> isert_put_conn() -> kref_put().
+ */
+ if (!kref_get_unless_zero(&isert_conn->conn_kref)) {
+ isert_warn("conn %p connect_release is running\n", isert_conn);
+ goto out_conn_dev;
+ }
ret = isert_rdma_accept(isert_conn);
if (ret)
@@ -769,11 +780,6 @@ isert_connected_handler(struct rdma_cm_id *cma_id)
isert_info("conn %p\n", isert_conn);
- if (!kref_get_unless_zero(&isert_conn->conn_kref)) {
- isert_warn("conn %p connect_release is running\n", isert_conn);
- return;
- }
-
mutex_lock(&isert_conn->conn_mutex);
if (isert_conn->state != ISER_CONN_FULL_FEATURE)
isert_conn->state = ISER_CONN_UP;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* Re: [PATCH 3.19.y-ckt 091/130] iser-target: Fix REJECT CM event use-after-free OOPs
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 091/130] iser-target: Fix REJECT CM event use-after-free OOPs Kamal Mostafa
@ 2015-08-28 21:07 ` Kamal Mostafa
0 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-28 21:07 UTC (permalink / raw)
To: linux-kernel; +Cc: stable, kernel-team, Sagi Grimberg, Nicholas Bellinger
On Thu, 2015-08-27 at 15:11 -0700, Kamal Mostafa wrote:
> 3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
>
> ------------------
Per Nicholas' earlier request to the stable ML, I've dropped this patch
from 3.19-stable for now.
-Kamal
>
> From: Nicholas Bellinger <nab@linux-iscsi.org>
>
> commit ce9a9fc20a78ad1e5222fae3a83d105f2d2fb9b9 upstream.
>
> This patch fixes a bug in iser-target code where the REJECT CM event
> handler code currently performs a isert_put_conn() for the final
> isert_conn->kref put, while iscsi_np process context is still blocked
> in isert_get_login_rx().
>
> Once isert_get_login_rx() is awoking due to login timeout, iscsi_np
> process context will attempt to invoke iscsi_target_login_sess_out()
> to cleanup iscsi_conn as expected, and calls isert_wait_conn() +
> isert_free_conn() which triggers the use-after-free OOPs.
>
> To address this bug, move the kref_get_unless_zero() call from
> isert_connected_handler() into isert_connect_request() immediately
> preceeding isert_rdma_accept() to ensure the CM handler cleanup
> paths and isert_free_conn() are always operating with two refs.
>
> Cc: Sagi Grimberg <sagig@mellanox.com>
> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
> [ kamal: backport to 3.19-stable: context ]
> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
> ---
> drivers/infiniband/ulp/isert/ib_isert.c | 16 +++++++++++-----
> 1 file changed, 11 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
> index b7350d5..bd28c48 100644
> --- a/drivers/infiniband/ulp/isert/ib_isert.c
> +++ b/drivers/infiniband/ulp/isert/ib_isert.c
> @@ -686,6 +686,17 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
> ret = isert_rdma_post_recvl(isert_conn);
> if (ret)
> goto out_conn_dev;
> + /*
> + * Obtain the second reference now before isert_rdma_accept() to
> + * ensure that any initiator generated REJECT CM event that occurs
> + * asynchronously won't drop the last reference until the error path
> + * in iscsi_target_login_sess_out() does it's ->iscsit_free_conn() ->
> + * isert_free_conn() -> isert_put_conn() -> kref_put().
> + */
> + if (!kref_get_unless_zero(&isert_conn->conn_kref)) {
> + isert_warn("conn %p connect_release is running\n", isert_conn);
> + goto out_conn_dev;
> + }
>
> ret = isert_rdma_accept(isert_conn);
> if (ret)
> @@ -769,11 +780,6 @@ isert_connected_handler(struct rdma_cm_id *cma_id)
>
> isert_info("conn %p\n", isert_conn);
>
> - if (!kref_get_unless_zero(&isert_conn->conn_kref)) {
> - isert_warn("conn %p connect_release is running\n", isert_conn);
> - return;
> - }
> -
> mutex_lock(&isert_conn->conn_mutex);
> if (isert_conn->state != ISER_CONN_FULL_FEATURE)
> isert_conn->state = ISER_CONN_UP;
^ permalink raw reply [flat|nested] 138+ messages in thread
* [PATCH 3.19.y-ckt 092/130] ARM: dts: i.MX35: Fix can support.
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (90 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 091/130] iser-target: Fix REJECT CM event use-after-free OOPs Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 093/130] ALSA: hda - Apply fixup for another Toshiba Satellite S50D Kamal Mostafa
` (37 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Denis Carikli, Shawn Guo, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Denis Carikli <denis@eukrea.com>
commit e053f96b1a00022b4e2c7ceb7ac0229646626507 upstream.
Since commit 3d42a379b6fa5b46058e3302b1802b29f64865bb
("can: flexcan: add 2nd clock to support imx53 and newer")
the can driver requires a dt nodes to have a second clock.
Add them to imx35 to fix probing the flex can driver on the
respective platforms.
Signed-off-by: Denis Carikli <denis@eukrea.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
arch/arm/boot/dts/imx35.dtsi | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm/boot/dts/imx35.dtsi b/arch/arm/boot/dts/imx35.dtsi
index 6932928..667eb6a 100644
--- a/arch/arm/boot/dts/imx35.dtsi
+++ b/arch/arm/boot/dts/imx35.dtsi
@@ -286,8 +286,8 @@
can1: can@53fe4000 {
compatible = "fsl,imx35-flexcan", "fsl,p1010-flexcan";
reg = <0x53fe4000 0x1000>;
- clocks = <&clks 33>;
- clock-names = "ipg";
+ clocks = <&clks 33>, <&clks 33>;
+ clock-names = "ipg", "per";
interrupts = <43>;
status = "disabled";
};
@@ -295,8 +295,8 @@
can2: can@53fe8000 {
compatible = "fsl,imx35-flexcan", "fsl,p1010-flexcan";
reg = <0x53fe8000 0x1000>;
- clocks = <&clks 34>;
- clock-names = "ipg";
+ clocks = <&clks 34>, <&clks 34>;
+ clock-names = "ipg", "per";
interrupts = <44>;
status = "disabled";
};
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 093/130] ALSA: hda - Apply fixup for another Toshiba Satellite S50D
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (91 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 092/130] ARM: dts: i.MX35: Fix can support Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 094/130] drm/nouveau/fbcon/nv11-: correctly account for ring space usage Kamal Mostafa
` (36 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Takashi Iwai, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Takashi Iwai <tiwai@suse.de>
commit b9d9c9efc292dd0ffe172780f915ed74eba3556c upstream.
Toshiba Satellite S50D has another model with a different PCI SSID
(1179:fa93) while the previous fixup was for 1179:fa91. Adjust the
fixup entry with SND_PCI_QUIRK_MASK() to match with both devices.
Reported-by: Tim Sample <timsample@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
sound/pci/hda/patch_sigmatel.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 60b3100..4469f3e 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -2919,7 +2919,8 @@ static const struct snd_pci_quirk stac92hd83xxx_fixup_tbl[] = {
SND_PCI_QUIRK(PCI_VENDOR_ID_HP, 0x148a,
"HP Mini", STAC_92HD83XXX_HP_LED),
SND_PCI_QUIRK_VENDOR(PCI_VENDOR_ID_HP, "HP", STAC_92HD83XXX_HP),
- SND_PCI_QUIRK(PCI_VENDOR_ID_TOSHIBA, 0xfa91,
+ /* match both for 0xfa91 and 0xfa93 */
+ SND_PCI_QUIRK_MASK(PCI_VENDOR_ID_TOSHIBA, 0xfffd, 0xfa91,
"Toshiba Satellite S50D", STAC_92HD83XXX_GPIO10_EAPD),
{} /* terminator */
};
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 094/130] drm/nouveau/fbcon/nv11-: correctly account for ring space usage
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (92 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 093/130] ALSA: hda - Apply fixup for another Toshiba Satellite S50D Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 095/130] vhost: actually track log eventfd file Kamal Mostafa
` (35 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Ilia Mirkin, Ben Skeggs, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Ilia Mirkin <imirkin@alum.mit.edu>
commit d108142c0840ce389cd9898aa76943b3fb430b83 upstream.
The RING_SPACE macro accounts how much space is used up so it's
important to ask it for the right amount. Incorrect accounting of this
can cause page faults down the line as writes are attempted outside of
the ring.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/gpu/drm/nouveau/nv04_fbcon.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nv04_fbcon.c b/drivers/gpu/drm/nouveau/nv04_fbcon.c
index 4ef602c..495c576 100644
--- a/drivers/gpu/drm/nouveau/nv04_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nv04_fbcon.c
@@ -203,7 +203,7 @@ nv04_fbcon_accel_init(struct fb_info *info)
if (ret)
return ret;
- if (RING_SPACE(chan, 49)) {
+ if (RING_SPACE(chan, 49 + (device->info.chipset >= 0x11 ? 4 : 0))) {
nouveau_fbcon_gpu_lockup(info);
return 0;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 095/130] vhost: actually track log eventfd file
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (93 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 094/130] drm/nouveau/fbcon/nv11-: correctly account for ring space usage Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 096/130] arm64/efi: map the entire UEFI vendor string before reading it Kamal Mostafa
` (34 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Marc-André Lureau, Michael S. Tsirkin, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
commit 7932c0bd7740f4cd2aa168d3ce0199e7af7d72d5 upstream.
While reviewing vhost log code, I found out that log_file is never
set. Note: I haven't tested the change (QEMU doesn't use LOG_FD yet).
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/vhost/vhost.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index cb807d0..5d326ed 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -886,6 +886,7 @@ long vhost_dev_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *argp)
}
if (eventfp != d->log_file) {
filep = d->log_file;
+ d->log_file = eventfp;
ctx = d->log_ctx;
d->log_ctx = eventfp ?
eventfd_ctx_fileget(eventfp) : NULL;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 096/130] arm64/efi: map the entire UEFI vendor string before reading it
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (94 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 095/130] vhost: actually track log eventfd file Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 097/130] xfs: remote attribute headers contain an invalid LSN Kamal Mostafa
` (33 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Ard Biesheuvel, Catalin Marinas, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
commit f91b1feada0b6f0a4d33648155b3ded2c4e0707e upstream.
At boot, the UTF-16 UEFI vendor string is copied from the system
table into a char array with a size of 100 bytes. However, this
size of 100 bytes is also used for memremapping() the source,
which may not be sufficient if the vendor string exceeds 50
UTF-16 characters, and the placement of the vendor string inside
a 4 KB page happens to leave the end unmapped.
So use the correct '100 * sizeof(efi_char16_t)' for the size of
the mapping.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Fixes: f84d02755f5a ("arm64: add EFI runtime services")
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
arch/arm64/kernel/efi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
index 2bb4347..dabc3f1 100644
--- a/arch/arm64/kernel/efi.c
+++ b/arch/arm64/kernel/efi.c
@@ -100,12 +100,12 @@ static int __init uefi_init(void)
/* Show what we know for posterity */
c16 = early_memremap(efi.systab->fw_vendor,
- sizeof(vendor));
+ sizeof(vendor) * sizeof(efi_char16_t));
if (c16) {
for (i = 0; i < (int) sizeof(vendor) - 1 && *c16; ++i)
vendor[i] = c16[i];
vendor[i] = '\0';
- early_memunmap(c16, sizeof(vendor));
+ early_memunmap(c16, sizeof(vendor) * sizeof(efi_char16_t));
}
pr_info("EFI v%u.%.02u by %s\n",
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 097/130] xfs: remote attribute headers contain an invalid LSN
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (95 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 096/130] arm64/efi: map the entire UEFI vendor string before reading it Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 098/130] xfs: remote attributes need to be considered data Kamal Mostafa
` (32 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Dave Chinner, Dave Chinner, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Dave Chinner <dchinner@redhat.com>
commit e3c32ee9e3e747fec01eb38e6610a9157d44c3ea upstream.
In recent testing, a system that crashed failed log recovery on
restart with a bad symlink buffer magic number:
XFS (vda): Starting recovery (logdev: internal)
XFS (vda): Bad symlink block magic!
XFS: Assertion failed: 0, file: fs/xfs/xfs_log_recover.c, line: 2060
On examination of the log via xfs_logprint, none of the symlink
buffers in the log had a bad magic number, nor were any other types
of buffer log format headers mis-identified as symlink buffers.
Tracing was used to find the buffer the kernel was tripping over,
and xfs_db identified it's contents as:
000: 5841524d 00000000 00000346 64d82b48 8983e692 d71e4680 a5f49e2c b317576e
020: 00000000 00602038 00000000 006034ce d0020000 00000000 4d4d4d4d 4d4d4d4d
040: 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d
060: 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d
.....
This is a remote attribute buffer, which are notable in that they
are not logged but are instead written synchronously by the remote
attribute code so that they exist on disk before the attribute
transactions are committed to the journal.
The above remote attribute block has an invalid LSN in it - cycle
0xd002000, block 0 - which means when log recovery comes along to
determine if the transaction that writes to the underlying block
should be replayed, it sees a block that has a future LSN and so
does not replay the buffer data in the transaction. Instead, it
validates the buffer magic number and attaches the buffer verifier
to it. It is this buffer magic number check that is failing in the
above assert, indicating that we skipped replay due to the LSN of
the underlying buffer.
The problem here is that the remote attribute buffers cannot have a
valid LSN placed into them, because the transaction that contains
the attribute tree pointer changes and the block allocation that the
attribute data is being written to hasn't yet been committed. Hence
the LSN field in the attribute block is completely unwritten,
thereby leaving the underlying contents of the block in the LSN
field. It could have any value, and hence a future overwrite of the
block by log recovery may or may not work correctly.
Fix this by always writing an invalid LSN to the remote attribute
block, as any buffer in log recovery that needs to write over the
remote attribute should occur. We are protected from having old data
written over the attribute by the fact that freeing the block before
the remote attribute is written will result in the buffer being
marked stale in the log and so all changes prior to the buffer stale
transaction will be cancelled by log recovery.
Hence it is safe to ignore the LSN in the case or synchronously
written, unlogged metadata such as remote attribute blocks, and to
ensure we do that correctly, we need to write an invalid LSN to all
remote attribute blocks to trigger immediate recovery of metadata
that is written over the top.
As a further protection for filesystems that may already have remote
attribute blocks with bad LSNs on disk, change the log recovery code
to always trigger immediate recovery of metadata over remote
attribute blocks.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
fs/xfs/libxfs/xfs_attr_remote.c | 29 +++++++++++++++++++++++------
fs/xfs/xfs_log_recover.c | 11 ++++++++---
2 files changed, 31 insertions(+), 9 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_attr_remote.c b/fs/xfs/libxfs/xfs_attr_remote.c
index 20de88d..2faec26 100644
--- a/fs/xfs/libxfs/xfs_attr_remote.c
+++ b/fs/xfs/libxfs/xfs_attr_remote.c
@@ -159,11 +159,10 @@ xfs_attr3_rmt_write_verify(
struct xfs_buf *bp)
{
struct xfs_mount *mp = bp->b_target->bt_mount;
- struct xfs_buf_log_item *bip = bp->b_fspriv;
+ int blksize = mp->m_attr_geo->blksize;
char *ptr;
int len;
xfs_daddr_t bno;
- int blksize = mp->m_attr_geo->blksize;
/* no verification of non-crc buffers */
if (!xfs_sb_version_hascrc(&mp->m_sb))
@@ -175,16 +174,22 @@ xfs_attr3_rmt_write_verify(
ASSERT(len >= blksize);
while (len > 0) {
+ struct xfs_attr3_rmt_hdr *rmt = (struct xfs_attr3_rmt_hdr *)ptr;
+
if (!xfs_attr3_rmt_verify(mp, ptr, blksize, bno)) {
xfs_buf_ioerror(bp, -EFSCORRUPTED);
xfs_verifier_error(bp);
return;
}
- if (bip) {
- struct xfs_attr3_rmt_hdr *rmt;
- rmt = (struct xfs_attr3_rmt_hdr *)ptr;
- rmt->rm_lsn = cpu_to_be64(bip->bli_item.li_lsn);
+ /*
+ * Ensure we aren't writing bogus LSNs to disk. See
+ * xfs_attr3_rmt_hdr_set() for the explanation.
+ */
+ if (rmt->rm_lsn != cpu_to_be64(NULLCOMMITLSN)) {
+ xfs_buf_ioerror(bp, -EFSCORRUPTED);
+ xfs_verifier_error(bp);
+ return;
}
xfs_update_cksum(ptr, blksize, XFS_ATTR3_RMT_CRC_OFF);
@@ -221,6 +226,18 @@ xfs_attr3_rmt_hdr_set(
rmt->rm_owner = cpu_to_be64(ino);
rmt->rm_blkno = cpu_to_be64(bno);
+ /*
+ * Remote attribute blocks are written synchronously, so we don't
+ * have an LSN that we can stamp in them that makes any sense to log
+ * recovery. To ensure that log recovery handles overwrites of these
+ * blocks sanely (i.e. once they've been freed and reallocated as some
+ * other type of metadata) we need to ensure that the LSN has a value
+ * that tells log recovery to ignore the LSN and overwrite the buffer
+ * with whatever is in it's log. To do this, we use the magic
+ * NULLCOMMITLSN to indicate that the LSN is invalid.
+ */
+ rmt->rm_lsn = cpu_to_be64(NULLCOMMITLSN);
+
return sizeof(struct xfs_attr3_rmt_hdr);
}
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index a5a945f..2a19a61 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -1887,9 +1887,14 @@ xlog_recover_get_buf_lsn(
uuid = &((struct xfs_dir3_blk_hdr *)blk)->uuid;
break;
case XFS_ATTR3_RMT_MAGIC:
- lsn = be64_to_cpu(((struct xfs_attr3_rmt_hdr *)blk)->rm_lsn);
- uuid = &((struct xfs_attr3_rmt_hdr *)blk)->rm_uuid;
- break;
+ /*
+ * Remote attr blocks are written synchronously, rather than
+ * being logged. That means they do not contain a valid LSN
+ * (i.e. transactionally ordered) in them, and hence any time we
+ * see a buffer to replay over the top of a remote attribute
+ * block we should simply do so.
+ */
+ goto recover_immediately;
case XFS_SB_MAGIC:
lsn = be64_to_cpu(((struct xfs_dsb *)blk)->sb_lsn);
uuid = &((struct xfs_dsb *)blk)->sb_uuid;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 098/130] xfs: remote attributes need to be considered data
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (96 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 097/130] xfs: remote attribute headers contain an invalid LSN Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 099/130] ALSA: hda - Apply a fixup to Dell Vostro 5480 Kamal Mostafa
` (31 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Dave Chinner, Dave Chinner, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Dave Chinner <dchinner@redhat.com>
commit df150ed102baa0e78c06e08e975dfb47147dd677 upstream.
We don't log remote attribute contents, and instead write them
synchronously before we commit the block allocation and attribute
tree update transaction. As a result we are writing to the allocated
space before the allcoation has been made permanent.
As a result, we cannot consider this allocation to be a metadata
allocation. Metadata allocation can take blocks from the free list
and so reuse them before the transaction that freed the block is
committed to disk. This behaviour is perfectly fine for journalled
metadata changes as log recovery will ensure the free operation is
replayed before the overwrite, but for remote attribute writes this
is not the case.
Hence we have to consider the remote attribute blocks to contain
data and allocate accordingly. We do this by dropping the
XFS_BMAPI_METADATA flag from the block allocation. This means the
allocation will not use blocks that are on the busy list without
first ensuring that the freeing transaction has been committed to
disk and the blocks removed from the busy list. This ensures we will
never overwrite a freed block without first ensuring that it is
really free.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
fs/xfs/libxfs/xfs_attr_remote.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_attr_remote.c b/fs/xfs/libxfs/xfs_attr_remote.c
index 2faec26..dd71403 100644
--- a/fs/xfs/libxfs/xfs_attr_remote.c
+++ b/fs/xfs/libxfs/xfs_attr_remote.c
@@ -451,14 +451,21 @@ xfs_attr_rmtval_set(
/*
* Allocate a single extent, up to the size of the value.
+ *
+ * Note that we have to consider this a data allocation as we
+ * write the remote attribute without logging the contents.
+ * Hence we must ensure that we aren't using blocks that are on
+ * the busy list so that we don't overwrite blocks which have
+ * recently been freed but their transactions are not yet
+ * committed to disk. If we overwrite the contents of a busy
+ * extent and then crash then the block may not contain the
+ * correct metadata after log recovery occurs.
*/
xfs_bmap_init(args->flist, args->firstblock);
nmap = 1;
error = xfs_bmapi_write(args->trans, dp, (xfs_fileoff_t)lblkno,
- blkcnt,
- XFS_BMAPI_ATTRFORK | XFS_BMAPI_METADATA,
- args->firstblock, args->total, &map, &nmap,
- args->flist);
+ blkcnt, XFS_BMAPI_ATTRFORK, args->firstblock,
+ args->total, &map, &nmap, args->flist);
if (!error) {
error = xfs_bmap_finish(&args->trans, args->flist,
&committed);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 099/130] ALSA: hda - Apply a fixup to Dell Vostro 5480
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (97 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 098/130] xfs: remote attributes need to be considered data Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 100/130] ALSA: usb-audio: add dB range mapping for some devices Kamal Mostafa
` (30 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Takashi Iwai, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Takashi Iwai <tiwai@suse.de>
commit 3a05d12f46cb95a6a685114819363a56e6170996 upstream.
Dell Vostro 5480 (1028:069a) needs the very same quirk used for Vostro
5470 model to make bass speakers properly working.
Reported-and-tested-by: Paulo Roberto de Oliveira Castro <p.oliveira.castro@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
sound/pci/hda/patch_realtek.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 5cbdbe7..2ec4b79 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4876,6 +4876,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x1028, 0x0638, "Dell Inspiron 5439", ALC290_FIXUP_MONO_SPEAKERS_HSJACK),
SND_PCI_QUIRK(0x1028, 0x064a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
SND_PCI_QUIRK(0x1028, 0x064b, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1028, 0x069a, "Dell Vostro 5480", ALC290_FIXUP_SUBWOOFER_HSJACK),
SND_PCI_QUIRK(0x1028, 0x06c7, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE),
SND_PCI_QUIRK(0x1028, 0x06d9, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
SND_PCI_QUIRK(0x1028, 0x06da, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 100/130] ALSA: usb-audio: add dB range mapping for some devices
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (98 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 099/130] ALSA: hda - Apply a fixup to Dell Vostro 5480 Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 101/130] drm/i915: Replace WARN inside I915_READ64_2x32 with retry loop Kamal Mostafa
` (29 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Yao-Wen Mao, Takashi Iwai, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Yao-Wen Mao <yaowen@google.com>
commit 2d1cb7f658fb9c3ba8f9dab8aca297d4dfdec835 upstream.
Add the correct dB ranges of Bose Companion 5 and Drangonfly DAC 1.2.
Signed-off-by: Yao-Wen Mao <yaowen@google.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
sound/usb/mixer_maps.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c
index e5000da..6a803ef 100644
--- a/sound/usb/mixer_maps.c
+++ b/sound/usb/mixer_maps.c
@@ -341,6 +341,20 @@ static const struct usbmix_name_map scms_usb3318_map[] = {
{ 0 }
};
+/* Bose companion 5, the dB conversion factor is 16 instead of 256 */
+static struct usbmix_dB_map bose_companion5_dB = {-5006, -6};
+static struct usbmix_name_map bose_companion5_map[] = {
+ { 3, NULL, .dB = &bose_companion5_dB },
+ { 0 } /* terminator */
+};
+
+/* Dragonfly DAC 1.2, the dB conversion factor is 1 instead of 256 */
+static struct usbmix_dB_map dragonfly_1_2_dB = {0, 5000};
+static struct usbmix_name_map dragonfly_1_2_map[] = {
+ { 7, NULL, .dB = &dragonfly_1_2_dB },
+ { 0 } /* terminator */
+};
+
/*
* Control map entries
*/
@@ -451,6 +465,16 @@ static struct usbmix_ctl_map usbmix_ctl_maps[] = {
.id = USB_ID(0x25c4, 0x0003),
.map = scms_usb3318_map,
},
+ {
+ /* Bose Companion 5 */
+ .id = USB_ID(0x05a7, 0x1020),
+ .map = bose_companion5_map,
+ },
+ {
+ /* Dragonfly DAC 1.2 */
+ .id = USB_ID(0x21b4, 0x0081),
+ .map = dragonfly_1_2_map,
+ },
{ 0 } /* terminator */
};
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 101/130] drm/i915: Replace WARN inside I915_READ64_2x32 with retry loop
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (99 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 100/130] ALSA: usb-audio: add dB range mapping for some devices Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 102/130] drm/radeon/combios: add some validation of lvds values Kamal Mostafa
` (28 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Chris Wilson, Michał Winiarski, Daniel Vetter, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Chris Wilson <chris@chris-wilson.co.uk>
commit ee0a227b7ac6e75f28e10269f81c7ec6eb600952 upstream.
Since we may conceivably encounter situations where the upper part of the
64bit register changes between reads, for example when a timestamp
counter overflows, change the WARN into a retry loop.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/gpu/drm/i915/i915_drv.h | 17 ++++++++---------
1 file changed, 8 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 44a3c38..46ef49b 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2996,15 +2996,14 @@ int vlv_freq_opcode(struct drm_i915_private *dev_priv, int val);
#define I915_READ64(reg) dev_priv->uncore.funcs.mmio_readq(dev_priv, (reg), true)
#define I915_READ64_2x32(lower_reg, upper_reg) ({ \
- u32 upper = I915_READ(upper_reg); \
- u32 lower = I915_READ(lower_reg); \
- u32 tmp = I915_READ(upper_reg); \
- if (upper != tmp) { \
- upper = tmp; \
- lower = I915_READ(lower_reg); \
- WARN_ON(I915_READ(upper_reg) != upper); \
- } \
- (u64)upper << 32 | lower; })
+ u32 upper, lower, tmp; \
+ tmp = I915_READ(upper_reg); \
+ do { \
+ upper = tmp; \
+ lower = I915_READ(lower_reg); \
+ tmp = I915_READ(upper_reg); \
+ } while (upper != tmp); \
+ (u64)upper << 32 | lower; })
#define POSTING_READ(reg) (void)I915_READ_NOTRACE(reg)
#define POSTING_READ16(reg) (void)I915_READ16_NOTRACE(reg)
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 102/130] drm/radeon/combios: add some validation of lvds values
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (100 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 101/130] drm/i915: Replace WARN inside I915_READ64_2x32 with retry loop Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 103/130] drm/i915: Declare the swizzling unknown for L-shaped configurations Kamal Mostafa
` (27 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Alex Deucher, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
commit 0a90a0cff9f429f886f423967ae053150dce9259 upstream.
Fixes a broken hsync start value uncovered by:
abc0b1447d4974963548777a5ba4a4457c82c426
(drm: Perform basic sanity checks on probed modes)
The driver handled the bad hsync start elsewhere, but
the above commit prevented it from getting added.
bug:
https://bugs.freedesktop.org/show_bug.cgi?id=91401
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/gpu/drm/radeon/radeon_combios.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index 3e5f6b7..c097d3a 100644
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -1255,10 +1255,15 @@ struct radeon_encoder_lvds *radeon_combios_get_lvds_info(struct radeon_encoder
if ((RBIOS16(tmp) == lvds->native_mode.hdisplay) &&
(RBIOS16(tmp + 2) == lvds->native_mode.vdisplay)) {
+ u32 hss = (RBIOS16(tmp + 21) - RBIOS16(tmp + 19) - 1) * 8;
+
+ if (hss > lvds->native_mode.hdisplay)
+ hss = (10 - 1) * 8;
+
lvds->native_mode.htotal = lvds->native_mode.hdisplay +
(RBIOS16(tmp + 17) - RBIOS16(tmp + 19)) * 8;
lvds->native_mode.hsync_start = lvds->native_mode.hdisplay +
- (RBIOS16(tmp + 21) - RBIOS16(tmp + 19) - 1) * 8;
+ hss;
lvds->native_mode.hsync_end = lvds->native_mode.hsync_start +
(RBIOS8(tmp + 23) * 8);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 103/130] drm/i915: Declare the swizzling unknown for L-shaped configurations
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (101 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 102/130] drm/radeon/combios: add some validation of lvds values Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 104/130] x86/efi: Use all 64 bit of efi_memmap in setup_e820() Kamal Mostafa
` (26 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Chris Wilson, Daniel Vetter, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Chris Wilson <chris@chris-wilson.co.uk>
commit 5eb3e5a5e11d14f9deb2a4b83555443b69ab9940 upstream.
The old style of memory interleaving swizzled upto the end of the
first even bank of memory, and then used the remainder as unswizzled on
the unpaired bank - i.e. swizzling is not constant for all memory. This
causes problems when we try to migrate memory and so the kernel prevents
migration at all when we detect L-shaped inconsistent swizzling.
However, this issue also extends to userspace who try to manually detile
into memory as the swizzling for an individual page is unknown (it
depends on its physical address only known to the kernel), userspace
cannot correctly swizzle.
Note that this is a new attempt for the previously merged one,
reverted in
commit d82c0ba6e306f079407f07003e53c262d683397b
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Tue Jul 14 12:29:27 2015 +0200
Revert "drm/i915: Declare the swizzling unknown for L-shaped configurations"
This is cc: stable since we need it to fix up troubles with wc cpu
mmaps that userspace recently started to use widely.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91105
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
[danvet: Add note about previous (failed attempt).]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/gpu/drm/i915/i915_gem_tiling.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c
index ffe9072..c91d8aa 100644
--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
@@ -464,7 +464,10 @@ i915_gem_get_tiling(struct drm_device *dev, void *data,
}
/* Hide bit 17 from the user -- see comment in i915_gem_set_tiling */
- args->phys_swizzle_mode = args->swizzle_mode;
+ if (dev_priv->quirks & QUIRK_PIN_SWIZZLED_PAGES)
+ args->phys_swizzle_mode = I915_BIT_6_SWIZZLE_UNKNOWN;
+ else
+ args->phys_swizzle_mode = args->swizzle_mode;
if (args->swizzle_mode == I915_BIT_6_SWIZZLE_9_17)
args->swizzle_mode = I915_BIT_6_SWIZZLE_9;
if (args->swizzle_mode == I915_BIT_6_SWIZZLE_9_10_17)
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 104/130] x86/efi: Use all 64 bit of efi_memmap in setup_e820()
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (102 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 103/130] drm/i915: Declare the swizzling unknown for L-shaped configurations Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 105/130] efi: Check for NULL efi kernel parameters Kamal Mostafa
` (25 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Dmitry Skorodumov, Denis V. Lunev, Matt Fleming, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Dmitry Skorodumov <sdmitry@parallels.com>
commit 7cc03e48965453b5df1cce5062c826189b04b960 upstream.
The efi_info structure stores low 32 bits of memory map
in efi_memmap and high 32 bits in efi_memmap_hi.
While constructing pointer in the setup_e820(), need
to take into account all 64 bit of the pointer.
It is because on 64bit machine the function
efi_get_memory_map() may return full 64bit pointer and before
the patch that pointer was truncated.
The issue is triggered on Parallles virtual machine and
fixed with this patch.
Signed-off-by: Dmitry Skorodumov <sdmitry@parallels.com>
Cc: Denis V. Lunev <den@openvz.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
arch/x86/boot/compressed/eboot.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index 5999980..b451033 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -1194,6 +1194,10 @@ static efi_status_t setup_e820(struct boot_params *params,
unsigned int e820_type = 0;
unsigned long m = efi->efi_memmap;
+#ifdef CONFIG_X86_64
+ m |= (u64)efi->efi_memmap_hi << 32;
+#endif
+
d = (efi_memory_desc_t *)(m + (i * efi->efi_memdesc_size));
switch (d->type) {
case EFI_RESERVED_TYPE:
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 105/130] efi: Check for NULL efi kernel parameters
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (103 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 104/130] x86/efi: Use all 64 bit of efi_memmap in setup_e820() Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 106/130] ipr: Fix locking for unit attention handling Kamal Mostafa
` (24 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Ricardo Neri, Dave Young, Matt Fleming, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
commit 9115c7589b11349a1c3099758b4bded579ff69e0 upstream.
Even though it is documented how to specifiy efi parameters, it is
possible to cause a kernel panic due to a dereference of a NULL pointer when
parsing such parameters if "efi" alone is given:
PANIC: early exception 0e rip 10:ffffffff812fb361 error 0 cr2 0
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.2.0-rc1+ #450
[ 0.000000] ffffffff81fe20a9 ffffffff81e03d50 ffffffff8184bb0f 00000000000003f8
[ 0.000000] 0000000000000000 ffffffff81e03e08 ffffffff81f371a1 64656c62616e6520
[ 0.000000] 0000000000000069 000000000000005f 0000000000000000 0000000000000000
[ 0.000000] Call Trace:
[ 0.000000] [<ffffffff8184bb0f>] dump_stack+0x45/0x57
[ 0.000000] [<ffffffff81f371a1>] early_idt_handler_common+0x81/0xae
[ 0.000000] [<ffffffff812fb361>] ? parse_option_str+0x11/0x90
[ 0.000000] [<ffffffff81f4dd69>] arch_parse_efi_cmdline+0x15/0x42
[ 0.000000] [<ffffffff81f376e1>] do_early_param+0x50/0x8a
[ 0.000000] [<ffffffff8106b1b3>] parse_args+0x1e3/0x400
[ 0.000000] [<ffffffff81f37a43>] parse_early_options+0x24/0x28
[ 0.000000] [<ffffffff81f37691>] ? loglevel+0x31/0x31
[ 0.000000] [<ffffffff81f37a78>] parse_early_param+0x31/0x3d
[ 0.000000] [<ffffffff81f3ae98>] setup_arch+0x2de/0xc08
[ 0.000000] [<ffffffff8109629a>] ? vprintk_default+0x1a/0x20
[ 0.000000] [<ffffffff81f37b20>] start_kernel+0x90/0x423
[ 0.000000] [<ffffffff81f37495>] x86_64_start_reservations+0x2a/0x2c
[ 0.000000] [<ffffffff81f37582>] x86_64_start_kernel+0xeb/0xef
[ 0.000000] RIP 0xffffffff81ba2efc
This panic is not reproducible with "efi=" as this will result in a non-NULL
zero-length string.
Thus, verify that the pointer to the parameter string is not NULL. This is
consistent with other parameter-parsing functions which check for NULL pointers.
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Cc: Dave Young <dyoung@redhat.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
arch/x86/platform/efi/efi.c | 5 +++++
drivers/firmware/efi/efi.c | 5 +++++
2 files changed, 10 insertions(+)
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index dbc8627..e752f79 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -937,6 +937,11 @@ u64 efi_mem_attributes(unsigned long phys_addr)
static int __init arch_parse_efi_cmdline(char *str)
{
+ if (!str) {
+ pr_warn("need at least one option\n");
+ return -EINVAL;
+ }
+
if (parse_option_str(str, "old_map"))
set_bit(EFI_OLD_MEMMAP, &efi.flags);
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index b1d7051..0ade9dc 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -57,6 +57,11 @@ bool efi_runtime_disabled(void)
static int __init parse_efi_cmdline(char *str)
{
+ if (!str) {
+ pr_warn("need at least one option\n");
+ return -EINVAL;
+ }
+
if (parse_option_str(str, "noruntime"))
disable_runtime = true;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 106/130] ipr: Fix locking for unit attention handling
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (104 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 105/130] efi: Check for NULL efi kernel parameters Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 107/130] ipr: Fix incorrect trace indexing Kamal Mostafa
` (23 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Brian King, James Bottomley, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Brian King <brking@linux.vnet.ibm.com>
commit 36b8e180e1e929e00b351c3b72aab3147fc14116 upstream.
Make sure we have the host lock held when calling scsi_report_bus_reset. Fixes
a crash seen as the __devices list in the scsi host was changing as we were
iterating through it.
Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Reviewed-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/ipr.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 9219953..921e294 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -6178,21 +6178,23 @@ static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
- unsigned long hrrq_flags;
+ unsigned long lock_flags;
scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
scsi_dma_unmap(scsi_cmd);
- spin_lock_irqsave(ipr_cmd->hrrq->lock, hrrq_flags);
+ spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
scsi_cmd->scsi_done(scsi_cmd);
- spin_unlock_irqrestore(ipr_cmd->hrrq->lock, hrrq_flags);
+ spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
} else {
- spin_lock_irqsave(ipr_cmd->hrrq->lock, hrrq_flags);
+ spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
+ spin_lock(&ipr_cmd->hrrq->_lock);
ipr_erp_start(ioa_cfg, ipr_cmd);
- spin_unlock_irqrestore(ipr_cmd->hrrq->lock, hrrq_flags);
+ spin_unlock(&ipr_cmd->hrrq->_lock);
+ spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
}
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 107/130] ipr: Fix incorrect trace indexing
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (105 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 106/130] ipr: Fix locking for unit attention handling Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 108/130] ipr: Fix invalid array indexing for HRRQ Kamal Mostafa
` (22 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Brian King, James Bottomley, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Brian King <brking@linux.vnet.ibm.com>
commit bb7c54339e6a10ecce5c4961adf5e75b3cf0af30 upstream.
When ipr's internal driver trace was changed to an atomic, a signed/unsigned
bug slipped in which results in us indexing backwards in our memory buffer
writing on memory that does not belong to us. This patch fixes this by removing
the modulo and instead just mask off the low bits.
Tested-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Reviewed-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/ipr.c | 5 +++--
drivers/scsi/ipr.h | 1 +
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 921e294..05d5350 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -592,9 +592,10 @@ static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
{
struct ipr_trace_entry *trace_entry;
struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
+ unsigned int trace_index;
- trace_entry = &ioa_cfg->trace[atomic_add_return
- (1, &ioa_cfg->trace_index)%IPR_NUM_TRACE_ENTRIES];
+ trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK;
+ trace_entry = &ioa_cfg->trace[trace_index];
trace_entry->time = jiffies;
trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
trace_entry->type = type;
diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index 70b0647..6948f9f 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -1479,6 +1479,7 @@ struct ipr_ioa_cfg {
#define IPR_NUM_TRACE_INDEX_BITS 8
#define IPR_NUM_TRACE_ENTRIES (1 << IPR_NUM_TRACE_INDEX_BITS)
+#define IPR_TRACE_INDEX_MASK (IPR_NUM_TRACE_ENTRIES - 1)
#define IPR_TRACE_SIZE (sizeof(struct ipr_trace_entry) * IPR_NUM_TRACE_ENTRIES)
char trace_start[8];
#define IPR_TRACE_START_LABEL "trace"
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 108/130] ipr: Fix invalid array indexing for HRRQ
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (106 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 107/130] ipr: Fix incorrect trace indexing Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 109/130] scsi: fix memory leak with scsi-mq Kamal Mostafa
` (21 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Brian King, James Bottomley, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Brian King <brking@linux.vnet.ibm.com>
commit 3f1c0581310d5d94bd72740231507e763a6252a4 upstream.
Fixes another signed / unsigned array indexing bug in the ipr driver.
Currently, when hrrq_index wraps, it becomes a negative number. We
do the modulo, but still have a negative number, so we end up indexing
backwards in the array. Given where the hrrq array is located in memory,
we probably won't actually reference memory we don't own, but nonetheless
ipr is still looking at data within struct ipr_ioa_cfg and interpreting it as
struct ipr_hrr_queue data, so bad things could certainly happen.
Each ipr adapter has anywhere from 1 to 16 HRRQs. By default, we use 2 on new
adapters. Let's take an example:
Assume ioa_cfg->hrrq_index=0x7fffffffe and ioa_cfg->hrrq_num=4:
The atomic_add_return will then return -1. We mod this with 3 and get -2, add
one and get -1 for an array index.
On adapters which support more than a single HRRQ, we dedicate HRRQ to adapter
initialization and error interrupts so that we can optimize the other queues
for fast path I/O. So all normal I/O uses HRRQ 1-15. So we want to spread the
I/O requests across those HRRQs.
With the default module parameter settings, this bug won't hit, only when
someone sets the ipr.number_of_msix parameter to a value larger than 3 is when
bad things start to happen.
Tested-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Reviewed-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/ipr.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 05d5350..f13996e 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -1045,10 +1045,15 @@ static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg)
{
+ unsigned int hrrq;
+
if (ioa_cfg->hrrq_num == 1)
- return 0;
- else
- return (atomic_add_return(1, &ioa_cfg->hrrq_index) % (ioa_cfg->hrrq_num - 1)) + 1;
+ hrrq = 0;
+ else {
+ hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index);
+ hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1;
+ }
+ return hrrq;
}
/**
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 109/130] scsi: fix memory leak with scsi-mq
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (107 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 108/130] ipr: Fix invalid array indexing for HRRQ Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 110/130] ALSA: hda - Fix MacBook Pro 5,2 quirk Kamal Mostafa
` (20 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Tony Battersby, James Bottomley, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Tony Battersby <tonyb@cybernetics.com>
commit 0c958ecc69c277b25f38f72bc6d18ab145e8167c upstream.
Fix a memory leak with scsi-mq triggered by commands with large data
transfer length.
__sg_alloc_table() sets both table->nents and table->orig_nents to the
same value. When the scatterlist is DMA-mapped, table->nents is
overwritten with the (possibly smaller) size of the DMA-mapped
scatterlist, while table->orig_nents retains the original size of the
allocated scatterlist. scsi_free_sgtable() should therefore check
orig_nents instead of nents, and all code that initializes sdb->table
without calling __sg_alloc_table() should set both nents and orig_nents.
Fixes: d285203cf647 ("scsi: add support for a blk-mq based I/O path.")
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/scsi_error.c | 2 +-
drivers/scsi/scsi_lib.c | 6 +++---
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 8afb016..9e3d16f 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -950,7 +950,7 @@ void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd, struct scsi_eh_save *ses,
scmd->sdb.length);
scmd->sdb.table.sgl = &ses->sense_sgl;
scmd->sc_data_direction = DMA_FROM_DEVICE;
- scmd->sdb.table.nents = 1;
+ scmd->sdb.table.nents = scmd->sdb.table.orig_nents = 1;
scmd->cmnd[0] = REQUEST_SENSE;
scmd->cmnd[4] = scmd->sdb.length;
scmd->cmd_len = COMMAND_SIZE(scmd->cmnd[0]);
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 7129701..397644d 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -583,7 +583,7 @@ static struct scatterlist *scsi_sg_alloc(unsigned int nents, gfp_t gfp_mask)
static void scsi_free_sgtable(struct scsi_data_buffer *sdb, bool mq)
{
- if (mq && sdb->table.nents <= SCSI_MAX_SG_SEGMENTS)
+ if (mq && sdb->table.orig_nents <= SCSI_MAX_SG_SEGMENTS)
return;
__sg_free_table(&sdb->table, SCSI_MAX_SG_SEGMENTS, mq, scsi_sg_free);
}
@@ -597,8 +597,8 @@ static int scsi_alloc_sgtable(struct scsi_data_buffer *sdb, int nents, bool mq)
if (mq) {
if (nents <= SCSI_MAX_SG_SEGMENTS) {
- sdb->table.nents = nents;
- sg_init_table(sdb->table.sgl, sdb->table.nents);
+ sdb->table.nents = sdb->table.orig_nents = nents;
+ sg_init_table(sdb->table.sgl, nents);
return 0;
}
first_chunk = sdb->table.sgl;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 110/130] ALSA: hda - Fix MacBook Pro 5,2 quirk
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (108 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 109/130] scsi: fix memory leak with scsi-mq Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 111/130] x86/xen: Probe target addresses in set_aliased_prot() before the hypercall Kamal Mostafa
` (19 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Takashi Iwai, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Takashi Iwai <tiwai@suse.de>
commit 649ccd08534ee26deb2e5b08509800d0e95167f5 upstream.
MacBook Pro 5,2 with ALC889 codec had already a fixup entry, but this
seems not working correctly, a fix for pin NID 0x15 is needed in
addition. It's equivalent with the fixup for MacBook Air 1,1, so use
this instead.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=102131
Reported-and-tested-by: Jeffery Miller <jefferym@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
sound/pci/hda/patch_realtek.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 2ec4b79..ac7c8d0 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -2221,7 +2221,7 @@ static const struct snd_pci_quirk alc882_fixup_tbl[] = {
SND_PCI_QUIRK(0x106b, 0x4300, "iMac 9,1", ALC889_FIXUP_IMAC91_VREF),
SND_PCI_QUIRK(0x106b, 0x4600, "MacbookPro 5,2", ALC889_FIXUP_IMAC91_VREF),
SND_PCI_QUIRK(0x106b, 0x4900, "iMac 9,1 Aluminum", ALC889_FIXUP_IMAC91_VREF),
- SND_PCI_QUIRK(0x106b, 0x4a00, "Macbook 5,2", ALC889_FIXUP_IMAC91_VREF),
+ SND_PCI_QUIRK(0x106b, 0x4a00, "Macbook 5,2", ALC889_FIXUP_MBA11_VREF),
SND_PCI_QUIRK(0x1071, 0x8258, "Evesham Voyaeger", ALC882_FIXUP_EAPD),
SND_PCI_QUIRK(0x1462, 0x7350, "MSI-7350", ALC889_FIXUP_CD),
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 111/130] x86/xen: Probe target addresses in set_aliased_prot() before the hypercall
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (109 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 110/130] ALSA: hda - Fix MacBook Pro 5,2 quirk Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 112/130] packet: tpacket_snd(): fix signed/unsigned comparison Kamal Mostafa
` (18 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Andy Lutomirski, Andrew Cooper, Andy Lutomirski, Boris Ostrovsky,
Borislav Petkov, Brian Gerst, David Vrabel, Denys Vlasenko,
H. Peter Anvin, Jan Beulich, Konrad Rzeszutek Wilk,
Linus Torvalds, Peter Zijlstra, Sasha Levin, Steven Rostedt,
Thomas Gleixner, security@kernel.org, xen-devel, Ingo Molnar,
Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Andy Lutomirski <luto@kernel.org>
commit aa1acff356bbedfd03b544051f5b371746735d89 upstream.
The update_va_mapping hypercall can fail if the VA isn't present
in the guest's page tables. Under certain loads, this can
result in an OOPS when the target address is in unpopulated vmap
space.
While we're at it, add comments to help explain what's going on.
This isn't a great long-term fix. This code should probably be
changed to use something like set_memory_ro.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: David Vrabel <dvrabel@cantab.net>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: security@kernel.org <security@kernel.org>
Cc: xen-devel <xen-devel@lists.xen.org>
Link: http://lkml.kernel.org/r/0b0e55b995cda11e7829f140b833ef932fcabe3a.1438291540.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
arch/x86/xen/enlighten.c | 40 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 78a881b..f94ad30 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -483,6 +483,7 @@ static void set_aliased_prot(void *v, pgprot_t prot)
pte_t pte;
unsigned long pfn;
struct page *page;
+ unsigned char dummy;
ptep = lookup_address((unsigned long)v, &level);
BUG_ON(ptep == NULL);
@@ -492,6 +493,32 @@ static void set_aliased_prot(void *v, pgprot_t prot)
pte = pfn_pte(pfn, prot);
+ /*
+ * Careful: update_va_mapping() will fail if the virtual address
+ * we're poking isn't populated in the page tables. We don't
+ * need to worry about the direct map (that's always in the page
+ * tables), but we need to be careful about vmap space. In
+ * particular, the top level page table can lazily propagate
+ * entries between processes, so if we've switched mms since we
+ * vmapped the target in the first place, we might not have the
+ * top-level page table entry populated.
+ *
+ * We disable preemption because we want the same mm active when
+ * we probe the target and when we issue the hypercall. We'll
+ * have the same nominal mm, but if we're a kernel thread, lazy
+ * mm dropping could change our pgd.
+ *
+ * Out of an abundance of caution, this uses __get_user() to fault
+ * in the target address just in case there's some obscure case
+ * in which the target address isn't readable.
+ */
+
+ preempt_disable();
+
+ pagefault_disable(); /* Avoid warnings due to being atomic. */
+ __get_user(dummy, (unsigned char __user __force *)v);
+ pagefault_enable();
+
if (HYPERVISOR_update_va_mapping((unsigned long)v, pte, 0))
BUG();
@@ -503,6 +530,8 @@ static void set_aliased_prot(void *v, pgprot_t prot)
BUG();
} else
kmap_flush_unused();
+
+ preempt_enable();
}
static void xen_alloc_ldt(struct desc_struct *ldt, unsigned entries)
@@ -510,6 +539,17 @@ static void xen_alloc_ldt(struct desc_struct *ldt, unsigned entries)
const unsigned entries_per_page = PAGE_SIZE / LDT_ENTRY_SIZE;
int i;
+ /*
+ * We need to mark the all aliases of the LDT pages RO. We
+ * don't need to call vm_flush_aliases(), though, since that's
+ * only responsible for flushing aliases out the TLBs, not the
+ * page tables, and Xen will flush the TLB for us if needed.
+ *
+ * To avoid confusing future readers: none of this is necessary
+ * to load the LDT. The hypervisor only checks this when the
+ * LDT is faulted in due to subsequent descriptor access.
+ */
+
for(i = 0; i < entries; i += entries_per_page)
set_aliased_prot(ldt + i, PAGE_KERNEL_RO);
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 112/130] packet: tpacket_snd(): fix signed/unsigned comparison
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (110 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 111/130] x86/xen: Probe target addresses in set_aliased_prot() before the hypercall Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 113/130] inet: frag: don't re-use chainlist for evictor Kamal Mostafa
` (17 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Alexander Drozdov, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexander Drozdov <al.drozdov@gmail.com>
commit dbd46ab412b8fb395f2b0ff6f6a7eec9df311550 upstream.
tpacket_fill_skb() can return a negative value (-errno) which
is stored in tp_len variable. In that case the following
condition will be (but shouldn't be) true:
tp_len > dev->mtu + dev->hard_header_len
as dev->mtu and dev->hard_header_len are both unsigned.
That may lead to just returning an incorrect EMSGSIZE errno
to the user.
Fixes: 52f1454f629fa ("packet: allow to transmit +4 byte in TX_RING slot for VLAN case")
Signed-off-by: Alexander Drozdov <al.drozdov@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/packet/af_packet.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index b215289..ea36bec 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -2285,7 +2285,8 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
tp_len = tpacket_fill_skb(po, skb, ph, dev, size_max, proto,
addr, hlen);
- if (tp_len > dev->mtu + dev->hard_header_len) {
+ if (likely(tp_len >= 0) &&
+ tp_len > dev->mtu + dev->hard_header_len) {
struct ethhdr *ehdr;
/* Earlier code assumed this would be a VLAN pkt,
* double-check this now that we have the actual
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 113/130] inet: frag: don't re-use chainlist for evictor
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (111 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 112/130] packet: tpacket_snd(): fix signed/unsigned comparison Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 114/130] bridge: netlink: fix slave_changelink/br_setport race conditions Kamal Mostafa
` (16 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Nikolay Alexandrov, Florian Westphal, David S. Miller,
Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Florian Westphal <fw@strlen.de>
commit d1fe19444d82e399e38c1594c71b850eca8e9de0 upstream.
commit 65ba1f1ec0eff ("inet: frags: fix a race between inet_evict_bucket
and inet_frag_kill") describes the bug, but the fix doesn't work reliably.
Problem is that ->flags member can be set on other cpu without chainlock
being held by that task, i.e. the RMW-Cycle can clear INET_FRAG_EVICTED
bit after we put the element on the evictor private list.
We can crash when walking the 'private' evictor list since an element can
be deleted from list underneath the evictor.
Join work with Nikolay Alexandrov.
Fixes: b13d3cbfb8e8 ("inet: frag: move eviction of queues to work queue")
Reported-by: Johan Schuijt <johan@transip.nl>
Tested-by: Frank Schreuder <fschreuder@transip.nl>
Signed-off-by: Nikolay Alexandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
include/net/inet_frag.h | 2 ++
net/ipv4/inet_fragment.c | 8 +++-----
2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h
index 8d17655..3242bfd 100644
--- a/include/net/inet_frag.h
+++ b/include/net/inet_frag.h
@@ -45,6 +45,7 @@ enum {
* @flags: fragment queue flags
* @max_size: (ipv4 only) maximum received fragment size with IP_DF set
* @net: namespace that this frag belongs to
+ * @list_evictor: list of queues to forcefully evict (e.g. due to low memory)
*/
struct inet_frag_queue {
spinlock_t lock;
@@ -59,6 +60,7 @@ struct inet_frag_queue {
__u8 flags;
u16 max_size;
struct netns_frags *net;
+ struct hlist_node list_evictor;
};
#define INETFRAGS_HASHSZ 1024
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
index e792035..edc17b9 100644
--- a/net/ipv4/inet_fragment.c
+++ b/net/ipv4/inet_fragment.c
@@ -151,14 +151,13 @@ evict_again:
}
fq->flags |= INET_FRAG_EVICTED;
- hlist_del(&fq->list);
- hlist_add_head(&fq->list, &expired);
+ hlist_add_head(&fq->list_evictor, &expired);
++evicted;
}
spin_unlock(&hb->chain_lock);
- hlist_for_each_entry_safe(fq, n, &expired, list)
+ hlist_for_each_entry_safe(fq, n, &expired, list_evictor)
f->frag_expire((unsigned long) fq);
return evicted;
@@ -284,8 +283,7 @@ static inline void fq_unlink(struct inet_frag_queue *fq, struct inet_frags *f)
struct inet_frag_bucket *hb;
hb = get_frag_bucket_locked(fq, f);
- if (!(fq->flags & INET_FRAG_EVICTED))
- hlist_del(&fq->list);
+ hlist_del(&fq->list);
spin_unlock(&hb->chain_lock);
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 114/130] bridge: netlink: fix slave_changelink/br_setport race conditions
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (112 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 113/130] inet: frag: don't re-use chainlist for evictor Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 115/130] netfilter: ctnetlink: put back references to master ct and expect objects Kamal Mostafa
` (15 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Nikolay Aleksandrov, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
commit 963ad94853000ab100f5ff19eea80095660d41b4 upstream.
Since slave_changelink support was added there have been a few race
conditions when using br_setport() since some of the port functions it
uses require the bridge lock. It is very easy to trigger a lockup due to
some internal spin_lock() usage without bh disabled, also it's possible to
get the bridge into an inconsistent state.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Fixes: 3ac636b8591c ("bridge: implement rtnl_link_ops->slave_changelink")
Reviewed-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/bridge/br_netlink.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 9f5eb55..36e56a9 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -466,9 +466,17 @@ static int br_port_slave_changelink(struct net_device *brdev,
struct nlattr *tb[],
struct nlattr *data[])
{
+ struct net_bridge *br = netdev_priv(brdev);
+ int ret;
+
if (!data)
return 0;
- return br_setport(br_port_get_rtnl(dev), data);
+
+ spin_lock_bh(&br->lock);
+ ret = br_setport(br_port_get_rtnl(dev), data);
+ spin_unlock_bh(&br->lock);
+
+ return ret;
}
static int br_port_fill_slave_info(struct sk_buff *skb,
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 115/130] netfilter: ctnetlink: put back references to master ct and expect objects
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (113 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 114/130] bridge: netlink: fix slave_changelink/br_setport race conditions Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 116/130] NFS: Don't revalidate the mapping if both size and change attr are up to date Kamal Mostafa
` (14 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Pablo Neira Ayuso, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Pablo Neira Ayuso <pablo@netfilter.org>
commit 95dd8653de658143770cb0e55a58d2aab97c79d2 upstream.
We have to put back the references to the master conntrack and the expectation
that we just created, otherwise we'll leak them.
Fixes: 0ef71ee1a5b9 ("netfilter: ctnetlink: refactor ctnetlink_create_expect")
Reported-by: Tim Wiess <Tim.Wiess@watchguard.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/netfilter/nf_conntrack_netlink.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 1bd9ed9..d3ea299 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -2956,11 +2956,6 @@ ctnetlink_create_expect(struct net *net, u16 zone,
}
err = nf_ct_expect_related_report(exp, portid, report);
- if (err < 0)
- goto err_exp;
-
- return 0;
-err_exp:
nf_ct_expect_put(exp);
err_ct:
nf_ct_put(ct);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 116/130] NFS: Don't revalidate the mapping if both size and change attr are up to date
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (114 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 115/130] netfilter: ctnetlink: put back references to master ct and expect objects Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 117/130] bridge: mdb: fix delmdb state in the notification Kamal Mostafa
` (13 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Trond Myklebust, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Trond Myklebust <trond.myklebust@primarydata.com>
commit 85a23cee3f2c928475f31777ead5a71340a12fc3 upstream.
If we've ensured that the size and the change attribute are both correct,
then there is no point in marking those attributes as needing revalidation
again. Only do so if we know the size is incorrect and was not updated.
Fixes: f2467b6f64da ("NFS: Clear NFS_INO_REVAL_PAGECACHE when...")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
fs/nfs/inode.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 2211f6b..53e269e 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1194,9 +1194,11 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
if (fattr->valid & NFS_ATTR_FATTR_SIZE) {
cur_size = i_size_read(inode);
new_isize = nfs_size_to_loff_t(fattr->size);
- if (cur_size != new_isize && nfsi->nrequests == 0)
+ if (cur_size != new_isize)
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
}
+ if (nfsi->nrequests != 0)
+ invalid &= ~NFS_INO_REVAL_PAGECACHE;
/* Have any file permissions changed? */
if ((fattr->valid & NFS_ATTR_FATTR_MODE) && (inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO))
@@ -1591,8 +1593,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
invalid |= NFS_INO_INVALID_ATTR
| NFS_INO_INVALID_DATA
| NFS_INO_INVALID_ACCESS
- | NFS_INO_INVALID_ACL
- | NFS_INO_REVAL_PAGECACHE;
+ | NFS_INO_INVALID_ACL;
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
inode->i_version = fattr->change_attr;
@@ -1624,7 +1625,6 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
if ((nfsi->nrequests == 0) || new_isize > cur_isize) {
i_size_write(inode, new_isize);
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
- invalid &= ~NFS_INO_REVAL_PAGECACHE;
}
dprintk("NFS: isize change on server for file %s/%ld "
"(%Ld to %Ld)\n",
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 117/130] bridge: mdb: fix delmdb state in the notification
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (115 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 116/130] NFS: Don't revalidate the mapping if both size and change attr are up to date Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 118/130] ipvs: skb_orphan in case of forwarding Kamal Mostafa
` (12 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Nikolay Aleksandrov, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
commit 7ae90a4f96486e3e20274afa1b8329802f5e1981 upstream.
Since mdb states were introduced when deleting an entry the state was
left as it was set in the delete request from the user which leads to
the following output when doing a monitor (for example):
$ bridge mdb add dev br0 port eth3 grp 239.0.0.1 permanent
(monitor) dev br0 port eth3 grp 239.0.0.1 permanent
$ bridge mdb del dev br0 port eth3 grp 239.0.0.1 permanent
(monitor) dev br0 port eth3 grp 239.0.0.1 temp
^^^
Note the "temp" state in the delete notification which is wrong since
the entry was permanent, the state in a delete is always reported as
"temp" regardless of the real state of the entry.
After this patch:
$ bridge mdb add dev br0 port eth3 grp 239.0.0.1 permanent
(monitor) dev br0 port eth3 grp 239.0.0.1 permanent
$ bridge mdb del dev br0 port eth3 grp 239.0.0.1 permanent
(monitor) dev br0 port eth3 grp 239.0.0.1 permanent
There's one important note to make here that the state is actually not
matched when doing a delete, so one can delete a permanent entry by
stating "temp" in the end of the command, I've chosen this fix in order
not to break user-space tools which rely on this (incorrect) behaviour.
So to give an example after this patch and using the wrong state:
$ bridge mdb add dev br0 port eth3 grp 239.0.0.1 permanent
(monitor) dev br0 port eth3 grp 239.0.0.1 permanent
$ bridge mdb del dev br0 port eth3 grp 239.0.0.1 temp
(monitor) dev br0 port eth3 grp 239.0.0.1 permanent
Note the state of the entry that got deleted is correct in the
notification.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Fixes: ccb1c31a7a87 ("bridge: add flags to distinguish permanent mdb entires")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/bridge/br_mdb.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index f426da7..568c441 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -451,6 +451,7 @@ static int __br_mdb_del(struct net_bridge *br, struct br_mdb_entry *entry)
if (p->port->state == BR_STATE_DISABLED)
goto unlock;
+ entry->state = p->state;
rcu_assign_pointer(*pp, p->next);
hlist_del_init(&p->mglist);
del_timer(&p->timer);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 118/130] ipvs: skb_orphan in case of forwarding
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (116 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 117/130] bridge: mdb: fix delmdb state in the notification Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 119/130] avr32: handle NULL as a valid clock object Kamal Mostafa
` (11 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Alex Gartrell, Simon Horman, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Gartrell <agartrell@fb.com>
commit 71563f3414e917c62acd8e0fb0edf8ed6af63e4b upstream.
It is possible that we bind against a local socket in early_demux when we
are actually going to want to forward it. In this case, the socket serves
no purpose and only serves to confuse things (particularly functions which
implicitly expect sk_fullsock to be true, like ip_local_out).
Additionally, skb_set_owner_w is totally broken for non full-socks.
Signed-off-by: Alex Gartrell <agartrell@fb.com>
Fixes: 41063e9dd119 ("ipv4: Early TCP socket demux.")
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/netfilter/ipvs/ip_vs_xmit.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index 3aedbda..dafc16f 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -523,6 +523,21 @@ static inline int ip_vs_tunnel_xmit_prepare(struct sk_buff *skb,
return ret;
}
+/* In the event of a remote destination, it's possible that we would have
+ * matches against an old socket (particularly a TIME-WAIT socket). This
+ * causes havoc down the line (ip_local_out et. al. expect regular sockets
+ * and invalid memory accesses will happen) so simply drop the association
+ * in this case.
+*/
+static inline void ip_vs_drop_early_demux_sk(struct sk_buff *skb)
+{
+ /* If dev is set, the packet came from the LOCAL_IN callback and
+ * not from a local TCP socket.
+ */
+ if (skb->dev)
+ skb_orphan(skb);
+}
+
/* return NF_STOLEN (sent) or NF_ACCEPT if local=1 (not sent) */
static inline int ip_vs_nat_send_or_cont(int pf, struct sk_buff *skb,
struct ip_vs_conn *cp, int local)
@@ -534,12 +549,21 @@ static inline int ip_vs_nat_send_or_cont(int pf, struct sk_buff *skb,
ip_vs_notrack(skb);
else
ip_vs_update_conntrack(skb, cp, 1);
+
+ /* Remove the early_demux association unless it's bound for the
+ * exact same port and address on this host after translation.
+ */
+ if (!local || cp->vport != cp->dport ||
+ !ip_vs_addr_equal(cp->af, &cp->vaddr, &cp->daddr))
+ ip_vs_drop_early_demux_sk(skb);
+
if (!local) {
skb_forward_csum(skb);
NF_HOOK(pf, NF_INET_LOCAL_OUT, skb, NULL, skb_dst(skb)->dev,
dst_output);
} else
ret = NF_ACCEPT;
+
return ret;
}
@@ -553,6 +577,7 @@ static inline int ip_vs_send_or_cont(int pf, struct sk_buff *skb,
if (likely(!(cp->flags & IP_VS_CONN_F_NFCT)))
ip_vs_notrack(skb);
if (!local) {
+ ip_vs_drop_early_demux_sk(skb);
skb_forward_csum(skb);
NF_HOOK(pf, NF_INET_LOCAL_OUT, skb, NULL, skb_dst(skb)->dev,
dst_output);
@@ -841,6 +866,8 @@ ip_vs_prepare_tunneled_skb(struct sk_buff *skb, int skb_af,
struct ipv6hdr *old_ipv6h = NULL;
#endif
+ ip_vs_drop_early_demux_sk(skb);
+
if (skb_headroom(skb) < max_headroom || skb_cloned(skb)) {
new_skb = skb_realloc_headroom(skb, max_headroom);
if (!new_skb)
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 119/130] avr32: handle NULL as a valid clock object
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (117 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 118/130] ipvs: skb_orphan in case of forwarding Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 120/130] ipvs: fix crash with sync protocol v0 and FTP Kamal Mostafa
` (10 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team; +Cc: Andy Shevchenko, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
commit 5c02a4206538da12c040b51778d310df84c6bf6c upstream.
Since NULL is used as valid clock object on optional clocks we have to handle
this case in avr32 implementation as well.
Fixes: e1824dfe0d8e (net: macb: Adjust tx_clk when link speed changes)
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
arch/avr32/mach-at32ap/clock.c | 20 +++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/arch/avr32/mach-at32ap/clock.c b/arch/avr32/mach-at32ap/clock.c
index 23b1a97..52c179b 100644
--- a/arch/avr32/mach-at32ap/clock.c
+++ b/arch/avr32/mach-at32ap/clock.c
@@ -80,6 +80,9 @@ int clk_enable(struct clk *clk)
{
unsigned long flags;
+ if (!clk)
+ return 0;
+
spin_lock_irqsave(&clk_lock, flags);
__clk_enable(clk);
spin_unlock_irqrestore(&clk_lock, flags);
@@ -106,6 +109,9 @@ void clk_disable(struct clk *clk)
{
unsigned long flags;
+ if (IS_ERR_OR_NULL(clk))
+ return;
+
spin_lock_irqsave(&clk_lock, flags);
__clk_disable(clk);
spin_unlock_irqrestore(&clk_lock, flags);
@@ -117,6 +123,9 @@ unsigned long clk_get_rate(struct clk *clk)
unsigned long flags;
unsigned long rate;
+ if (!clk)
+ return 0;
+
spin_lock_irqsave(&clk_lock, flags);
rate = clk->get_rate(clk);
spin_unlock_irqrestore(&clk_lock, flags);
@@ -129,6 +138,9 @@ long clk_round_rate(struct clk *clk, unsigned long rate)
{
unsigned long flags, actual_rate;
+ if (!clk)
+ return 0;
+
if (!clk->set_rate)
return -ENOSYS;
@@ -145,6 +157,9 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
unsigned long flags;
long ret;
+ if (!clk)
+ return 0;
+
if (!clk->set_rate)
return -ENOSYS;
@@ -161,6 +176,9 @@ int clk_set_parent(struct clk *clk, struct clk *parent)
unsigned long flags;
int ret;
+ if (!clk)
+ return 0;
+
if (!clk->set_parent)
return -ENOSYS;
@@ -174,7 +192,7 @@ EXPORT_SYMBOL(clk_set_parent);
struct clk *clk_get_parent(struct clk *clk)
{
- return clk->parent;
+ return !clk ? NULL : clk->parent;
}
EXPORT_SYMBOL(clk_get_parent);
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 120/130] ipvs: fix crash with sync protocol v0 and FTP
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (118 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 119/130] avr32: handle NULL as a valid clock object Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 121/130] act_pedit: check binding before calling tcf_hash_release() Kamal Mostafa
` (9 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Julian Anastasov, Simon Horman, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Julian Anastasov <ja@ssi.bg>
commit 56184858d1fc95c46723436b455cb7261cd8be6f upstream.
Fix crash in 3.5+ if FTP is used after switching
sync_version to 0.
Fixes: 749c42b620a9 ("ipvs: reduce sync rate with time thresholds")
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/netfilter/ipvs/ip_vs_sync.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
index d93ceeb..7a06b38 100644
--- a/net/netfilter/ipvs/ip_vs_sync.c
+++ b/net/netfilter/ipvs/ip_vs_sync.c
@@ -612,7 +612,7 @@ static void ip_vs_sync_conn_v0(struct net *net, struct ip_vs_conn *cp,
pkts = atomic_add_return(1, &cp->in_pkts);
else
pkts = sysctl_sync_threshold(ipvs);
- ip_vs_sync_conn(net, cp->control, pkts);
+ ip_vs_sync_conn(net, cp, pkts);
}
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 121/130] act_pedit: check binding before calling tcf_hash_release()
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (119 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 120/130] ipvs: fix crash with sync protocol v0 and FTP Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 122/130] netfilter: nf_conntrack: Support expectations in different zones Kamal Mostafa
` (8 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Jamal Hadi Salim, Daniel Borkmann, Cong Wang, Cong Wang,
David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: WANG Cong <xiyou.wangcong@gmail.com>
commit 5175f7106cc55a1bcf97bf7d5ba0900017ebcef8 upstream.
When we share an action within a filter, the bind refcnt
should increase, therefore we should not call tcf_hash_release().
Fixes: 1a29321ed045 ("net_sched: act: Dont increment refcnt on replace")
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/sched/act_pedit.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/net/sched/act_pedit.c b/net/sched/act_pedit.c
index 59649d5..4298e8d 100644
--- a/net/sched/act_pedit.c
+++ b/net/sched/act_pedit.c
@@ -68,13 +68,12 @@ static int tcf_pedit_init(struct net *net, struct nlattr *nla,
}
ret = ACT_P_CREATED;
} else {
- p = to_pedit(a);
- tcf_hash_release(a, bind);
if (bind)
return 0;
+ tcf_hash_release(a, bind);
if (!ovr)
return -EEXIST;
-
+ p = to_pedit(a);
if (p->tcfp_nkeys && p->tcfp_nkeys != parm->nkeys) {
keys = kmalloc(ksize, GFP_KERNEL);
if (keys == NULL)
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 122/130] netfilter: nf_conntrack: Support expectations in different zones
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (120 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 121/130] act_pedit: check binding before calling tcf_hash_release() Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 123/130] ipvs: do not use random local source address for tunnels Kamal Mostafa
` (7 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Joe Stringer, Pablo Neira Ayuso, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Joe Stringer <joestringer@nicira.com>
commit 4b31814d20cbe5cd4ccf18089751e77a04afe4f2 upstream.
When zones were originally introduced, the expectation functions were
all extended to perform lookup using the zone. However, insertion was
not modified to check the zone. This means that two expectations which
are intended to apply for different connections that have the same tuple
but exist in different zones cannot both be tracked.
Fixes: 5d0aa2ccd4 (netfilter: nf_conntrack: add support for "conntrack zones")
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/netfilter/nf_conntrack_expect.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c
index 91a1837..26af451 100644
--- a/net/netfilter/nf_conntrack_expect.c
+++ b/net/netfilter/nf_conntrack_expect.c
@@ -219,7 +219,8 @@ static inline int expect_clash(const struct nf_conntrack_expect *a,
a->mask.src.u3.all[count] & b->mask.src.u3.all[count];
}
- return nf_ct_tuple_mask_cmp(&a->tuple, &b->tuple, &intersect_mask);
+ return nf_ct_tuple_mask_cmp(&a->tuple, &b->tuple, &intersect_mask) &&
+ nf_ct_zone(a->master) == nf_ct_zone(b->master);
}
static inline int expect_matches(const struct nf_conntrack_expect *a,
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 123/130] ipvs: do not use random local source address for tunnels
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (121 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 122/130] netfilter: nf_conntrack: Support expectations in different zones Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 124/130] ALSA: hda - fix cs4210_spdif_automute() Kamal Mostafa
` (6 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Julian Anastasov, Simon Horman, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Julian Anastasov <ja@ssi.bg>
commit 4754957f04f5f368792a0eb7dab0ae89fb93dcfd upstream.
Michael Vallaly reports about wrong source address used
in rare cases for tunneled traffic. Looks like
__ip_vs_get_out_rt in 3.10+ is providing uninitialized
dest_dst->dst_saddr.ip because ip_vs_dest_dst_alloc uses
kmalloc. While we retry after seeing EINVAL from routing
for data that does not look like valid local address, it
still succeeded when this memory was previously used from
other dests and with different local addresses. As result,
we can use valid local address that is not suitable for
our real server.
Fix it by providing 0.0.0.0 every time our cache is refreshed.
By this way we will get preferred source address from routing.
Reported-by: Michael Vallaly <lvs@nolatency.com>
Fixes: 026ace060dfe ("ipvs: optimize dst usage for real server")
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/netfilter/ipvs/ip_vs_xmit.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index dafc16f..e7fbb80 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -130,7 +130,6 @@ static struct rtable *do_output_route4(struct net *net, __be32 daddr,
memset(&fl4, 0, sizeof(fl4));
fl4.daddr = daddr;
- fl4.saddr = (rt_mode & IP_VS_RT_MODE_CONNECT) ? *saddr : 0;
fl4.flowi4_flags = (rt_mode & IP_VS_RT_MODE_KNOWN_NH) ?
FLOWI_FLAG_KNOWN_NH : 0;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 124/130] ALSA: hda - fix cs4210_spdif_automute()
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (122 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 123/130] ipvs: do not use random local source address for tunnels Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 125/130] niu: don't count tx error twice in case of headroom realloc fails Kamal Mostafa
` (5 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Dan Carpenter, Takashi Iwai, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Dan Carpenter <dan.carpenter@oracle.com>
commit 44008f0896ae205b02b0882dbf807f0de149efc4 upstream.
Smatch complains that we have nested checks for "spdif_present". It
turns out the current behavior isn't correct, we should remove the first
check and keep the second.
Fixes: 1077a024812d ('ALSA: hda - Use generic parser for Cirrus codec driver')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
sound/pci/hda/patch_cirrus.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
index dd2b3d9..e5dac8e 100644
--- a/sound/pci/hda/patch_cirrus.c
+++ b/sound/pci/hda/patch_cirrus.c
@@ -1001,9 +1001,7 @@ static void cs4210_spdif_automute(struct hda_codec *codec,
spec->spdif_present = spdif_present;
/* SPDIF TX on/off */
- if (spdif_present)
- snd_hda_set_pin_ctl(codec, spdif_pin,
- spdif_present ? PIN_OUT : 0);
+ snd_hda_set_pin_ctl(codec, spdif_pin, spdif_present ? PIN_OUT : 0);
cs_automute(codec);
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 125/130] niu: don't count tx error twice in case of headroom realloc fails
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (123 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 124/130] ALSA: hda - fix cs4210_spdif_automute() Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 126/130] net: sched: fix refcount imbalance in actions Kamal Mostafa
` (4 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Jiri Pirko, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Jiri Pirko <jiri@resnulli.us>
commit 42288830494cd51873ca745a7a229023df061226 upstream.
Fixes: a3138df9 ("[NIU]: Add Sun Neptune ethernet driver.")
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/net/ethernet/sun/niu.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c
index 0c64162..9655b01 100644
--- a/drivers/net/ethernet/sun/niu.c
+++ b/drivers/net/ethernet/sun/niu.c
@@ -6659,10 +6659,8 @@ static netdev_tx_t niu_start_xmit(struct sk_buff *skb,
struct sk_buff *skb_new;
skb_new = skb_realloc_headroom(skb, len);
- if (!skb_new) {
- rp->tx_errors++;
+ if (!skb_new)
goto out_drop;
- }
kfree_skb(skb);
skb = skb_new;
} else
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 126/130] net: sched: fix refcount imbalance in actions
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (124 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 125/130] niu: don't count tx error twice in case of headroom realloc fails Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 127/130] net/mlx4_core: Fix wrong index in propagating port change event to VFs Kamal Mostafa
` (3 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Daniel Borkmann, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Daniel Borkmann <daniel@iogearbox.net>
commit 28e6b67f0b292f557468c139085303b15f1a678f upstream.
Since commit 55334a5db5cd ("net_sched: act: refuse to remove bound action
outside"), we end up with a wrong reference count for a tc action.
Test case 1:
FOO="1,6 0 0 4294967295,"
BAR="1,6 0 0 4294967294,"
tc filter add dev foo parent 1: bpf bytecode "$FOO" flowid 1:1 \
action bpf bytecode "$FOO"
tc actions show action bpf
action order 0: bpf bytecode '1,6 0 0 4294967295' default-action pipe
index 1 ref 1 bind 1
tc actions replace action bpf bytecode "$BAR" index 1
tc actions show action bpf
action order 0: bpf bytecode '1,6 0 0 4294967294' default-action pipe
index 1 ref 2 bind 1
tc actions replace action bpf bytecode "$FOO" index 1
tc actions show action bpf
action order 0: bpf bytecode '1,6 0 0 4294967295' default-action pipe
index 1 ref 3 bind 1
Test case 2:
FOO="1,6 0 0 4294967295,"
tc filter add dev foo parent 1: bpf bytecode "$FOO" flowid 1:1 action ok
tc actions show action gact
action order 0: gact action pass
random type none pass val 0
index 1 ref 1 bind 1
tc actions add action drop index 1
RTNETLINK answers: File exists [...]
tc actions show action gact
action order 0: gact action pass
random type none pass val 0
index 1 ref 2 bind 1
tc actions add action drop index 1
RTNETLINK answers: File exists [...]
tc actions show action gact
action order 0: gact action pass
random type none pass val 0
index 1 ref 3 bind 1
What happens is that in tcf_hash_check(), we check tcf_common for a given
index and increase tcfc_refcnt and conditionally tcfc_bindcnt when we've
found an existing action. Now there are the following cases:
1) We do a late binding of an action. In that case, we leave the
tcfc_refcnt/tcfc_bindcnt increased and are done with the ->init()
handler. This is correctly handeled.
2) We replace the given action, or we try to add one without replacing
and find out that the action at a specific index already exists
(thus, we go out with error in that case).
In case of 2), we have to undo the reference count increase from
tcf_hash_check() in the tcf_hash_check() function. Currently, we fail to
do so because of the 'tcfc_bindcnt > 0' check which bails out early with
an -EPERM error.
Now, while commit 55334a5db5cd prevents 'tc actions del action ...' on an
already classifier-bound action to drop the reference count (which could
then become negative, wrap around etc), this restriction only accounts for
invocations outside a specific action's ->init() handler.
One possible solution would be to add a flag thus we possibly trigger
the -EPERM ony in situations where it is indeed relevant.
After the patch, above test cases have correct reference count again.
Fixes: 55334a5db5cd ("net_sched: act: refuse to remove bound action outside")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
include/net/act_api.h | 8 +++++++-
net/sched/act_api.c | 11 ++++++-----
2 files changed, 13 insertions(+), 6 deletions(-)
diff --git a/include/net/act_api.h b/include/net/act_api.h
index 3ee4c92..931738b 100644
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -99,7 +99,6 @@ struct tc_action_ops {
int tcf_hash_search(struct tc_action *a, u32 index);
void tcf_hash_destroy(struct tc_action *a);
-int tcf_hash_release(struct tc_action *a, int bind);
u32 tcf_hash_new_index(struct tcf_hashinfo *hinfo);
int tcf_hash_check(u32 index, struct tc_action *a, int bind);
int tcf_hash_create(u32 index, struct nlattr *est, struct tc_action *a,
@@ -107,6 +106,13 @@ int tcf_hash_create(u32 index, struct nlattr *est, struct tc_action *a,
void tcf_hash_cleanup(struct tc_action *a, struct nlattr *est);
void tcf_hash_insert(struct tc_action *a);
+int __tcf_hash_release(struct tc_action *a, bool bind, bool strict);
+
+static inline int tcf_hash_release(struct tc_action *a, bool bind)
+{
+ return __tcf_hash_release(a, bind, false);
+}
+
int tcf_register_action(struct tc_action_ops *a, unsigned int mask);
int tcf_unregister_action(struct tc_action_ops *a);
int tcf_action_destroy(struct list_head *actions, int bind);
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 3d43e49..f8d9c2a 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -45,7 +45,7 @@ void tcf_hash_destroy(struct tc_action *a)
}
EXPORT_SYMBOL(tcf_hash_destroy);
-int tcf_hash_release(struct tc_action *a, int bind)
+int __tcf_hash_release(struct tc_action *a, bool bind, bool strict)
{
struct tcf_common *p = a->priv;
int ret = 0;
@@ -53,7 +53,7 @@ int tcf_hash_release(struct tc_action *a, int bind)
if (p) {
if (bind)
p->tcfc_bindcnt--;
- else if (p->tcfc_bindcnt > 0)
+ else if (strict && p->tcfc_bindcnt > 0)
return -EPERM;
p->tcfc_refcnt--;
@@ -64,9 +64,10 @@ int tcf_hash_release(struct tc_action *a, int bind)
ret = 1;
}
}
+
return ret;
}
-EXPORT_SYMBOL(tcf_hash_release);
+EXPORT_SYMBOL(__tcf_hash_release);
static int tcf_dump_walker(struct sk_buff *skb, struct netlink_callback *cb,
struct tc_action *a)
@@ -136,7 +137,7 @@ static int tcf_del_walker(struct sk_buff *skb, struct tc_action *a)
head = &hinfo->htab[tcf_hash(i, hinfo->hmask)];
hlist_for_each_entry_safe(p, n, head, tcfc_head) {
a->priv = p;
- ret = tcf_hash_release(a, 0);
+ ret = __tcf_hash_release(a, false, true);
if (ret == ACT_P_DELETED) {
module_put(a->ops->owner);
n_i++;
@@ -413,7 +414,7 @@ int tcf_action_destroy(struct list_head *actions, int bind)
int ret = 0;
list_for_each_entry_safe(a, tmp, actions, list) {
- ret = tcf_hash_release(a, bind);
+ ret = __tcf_hash_release(a, bind, true);
if (ret == ACT_P_DELETED)
module_put(a->ops->owner);
else if (ret < 0)
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 127/130] net/mlx4_core: Fix wrong index in propagating port change event to VFs
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (125 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 126/130] net: sched: fix refcount imbalance in actions Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 128/130] packet: missing dev_put() in packet_do_bind() Kamal Mostafa
` (2 subsequent siblings)
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Jack Morgenstein, Matan Barak, Or Gerlitz, David S. Miller,
Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Jack Morgenstein <jackm@dev.mellanox.co.il>
commit 1c1bf34951e8d17941bf708d1901c47e81b15d55 upstream.
The port-change event processing in procedure mlx4_eq_int() uses "slave"
as the vf_oper array index. Since the value of "slave" is the PF function
index, the result is that the PF link state is used for deciding to
propagate the event for all the VFs. The VF link state should be used,
so the VF function index should be used here.
Fixes: 948e306d7d64 ('net/mlx4: Add VF link state support')
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/net/ethernet/mellanox/mlx4/eq.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c
index 3d275fb..5d2f56a 100644
--- a/drivers/net/ethernet/mellanox/mlx4/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/eq.c
@@ -568,7 +568,7 @@ static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq)
continue;
mlx4_dbg(dev, "%s: Sending MLX4_PORT_CHANGE_SUBTYPE_DOWN to slave: %d, port:%d\n",
__func__, i, port);
- s_info = &priv->mfunc.master.vf_oper[slave].vport[port].state;
+ s_info = &priv->mfunc.master.vf_oper[i].vport[port].state;
if (IFLA_VF_LINK_STATE_AUTO == s_info->link_state) {
eqe->event.port_change.port =
cpu_to_be32(
@@ -601,7 +601,7 @@ static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq)
continue;
if (i == mlx4_master_func_num(dev))
continue;
- s_info = &priv->mfunc.master.vf_oper[slave].vport[port].state;
+ s_info = &priv->mfunc.master.vf_oper[i].vport[port].state;
if (IFLA_VF_LINK_STATE_AUTO == s_info->link_state) {
eqe->event.port_change.port =
cpu_to_be32(
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 128/130] packet: missing dev_put() in packet_do_bind()
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (126 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 127/130] net/mlx4_core: Fix wrong index in propagating port change event to VFs Kamal Mostafa
@ 2015-08-27 22:11 ` Kamal Mostafa
2015-08-27 22:12 ` [PATCH 3.19.y-ckt 129/130] ipvs: fix crash if scheduler is changed Kamal Mostafa
2015-08-27 22:12 ` [PATCH 3.19.y-ckt 130/130] Revert "sched/x86_64: Don't save flags on context switch" Kamal Mostafa
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:11 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Lars Westerhoff, Dan Carpenter, David S. Miller, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Lars Westerhoff <lars.westerhoff@newtec.eu>
commit 158cd4af8dedbda0d612d448c724c715d0dda649 upstream.
When binding a PF_PACKET socket, the use count of the bound interface is
always increased with dev_hold in dev_get_by_{index,name}. However,
when rebound with the same protocol and device as in the previous bind
the use count of the interface was not decreased. Ultimately, this
caused the deletion of the interface to fail with the following message:
unregister_netdevice: waiting for dummy0 to become free. Usage count = 1
This patch moves the dev_put out of the conditional part that was only
executed when either the protocol or device changed on a bind.
Fixes: 902fefb82ef7 ('packet: improve socket create/bind latency in some cases')
Signed-off-by: Lars Westerhoff <lars.westerhoff@newtec.eu>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/packet/af_packet.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index ea36bec..8da43cb 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -2668,7 +2668,7 @@ static int packet_release(struct socket *sock)
static int packet_do_bind(struct sock *sk, struct net_device *dev, __be16 proto)
{
struct packet_sock *po = pkt_sk(sk);
- const struct net_device *dev_curr;
+ struct net_device *dev_curr;
__be16 proto_curr;
bool need_rehook;
@@ -2692,15 +2692,13 @@ static int packet_do_bind(struct sock *sk, struct net_device *dev, __be16 proto)
po->num = proto;
po->prot_hook.type = proto;
-
- if (po->prot_hook.dev)
- dev_put(po->prot_hook.dev);
-
po->prot_hook.dev = dev;
po->ifindex = dev ? dev->ifindex : 0;
packet_cached_dev_assign(po, dev);
}
+ if (dev_curr)
+ dev_put(dev_curr);
if (proto == 0 || !need_rehook)
goto out_unlock;
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 129/130] ipvs: fix crash if scheduler is changed
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (127 preceding siblings ...)
2015-08-27 22:11 ` [PATCH 3.19.y-ckt 128/130] packet: missing dev_put() in packet_do_bind() Kamal Mostafa
@ 2015-08-27 22:12 ` Kamal Mostafa
2015-08-27 22:12 ` [PATCH 3.19.y-ckt 130/130] Revert "sched/x86_64: Don't save flags on context switch" Kamal Mostafa
129 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:12 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Julian Anastasov, Simon Horman, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Julian Anastasov <ja@ssi.bg>
commit 05f00505a89acd21f5d0d20f5797dfbc4cf85243 upstream.
I overlooked the svc->sched_data usage from schedulers
when the services were converted to RCU in 3.10. Now
the rare ipvsadm -E command can change the scheduler
but due to the reverse order of ip_vs_bind_scheduler
and ip_vs_unbind_scheduler we provide new sched_data
to the old scheduler resulting in a crash.
To fix it without changing the scheduler methods we
have to use synchronize_rcu() only for the editing case.
It means all svc->scheduler readers should expect a
NULL value. To avoid breakage for the service listing
and ipvsadm -R we can use the "none" name to indicate
that scheduler is not assigned, a state when we drop
new connections.
Reported-by: Alexander Vasiliev <a.vasylev@404-group.com>
Fixes: ceec4c381681 ("ipvs: convert services to rcu")
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
net/netfilter/ipvs/ip_vs_core.c | 16 +++++++--
net/netfilter/ipvs/ip_vs_ctl.c | 78 +++++++++++++++++++++++++---------------
net/netfilter/ipvs/ip_vs_sched.c | 12 +++----
3 files changed, 69 insertions(+), 37 deletions(-)
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index b87ca32..8f9e9cc 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -313,7 +313,13 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
* return *ignored=0 i.e. ICMP and NF_DROP
*/
sched = rcu_dereference(svc->scheduler);
- dest = sched->schedule(svc, skb, iph);
+ if (sched) {
+ /* read svc->sched_data after svc->scheduler */
+ smp_rmb();
+ dest = sched->schedule(svc, skb, iph);
+ } else {
+ dest = NULL;
+ }
if (!dest) {
IP_VS_DBG(1, "p-schedule: no dest found.\n");
kfree(param.pe_data);
@@ -461,7 +467,13 @@ ip_vs_schedule(struct ip_vs_service *svc, struct sk_buff *skb,
}
sched = rcu_dereference(svc->scheduler);
- dest = sched->schedule(svc, skb, iph);
+ if (sched) {
+ /* read svc->sched_data after svc->scheduler */
+ smp_rmb();
+ dest = sched->schedule(svc, skb, iph);
+ } else {
+ dest = NULL;
+ }
if (dest == NULL) {
IP_VS_DBG(1, "Schedule: no dest found.\n");
return NULL;
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 7f91fbd..16c0afd 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -827,15 +827,16 @@ __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest,
__ip_vs_dst_cache_reset(dest);
spin_unlock_bh(&dest->dst_lock);
- sched = rcu_dereference_protected(svc->scheduler, 1);
if (add) {
ip_vs_start_estimator(svc->net, &dest->stats);
list_add_rcu(&dest->n_list, &svc->destinations);
svc->num_dests++;
- if (sched->add_dest)
+ sched = rcu_dereference_protected(svc->scheduler, 1);
+ if (sched && sched->add_dest)
sched->add_dest(svc, dest);
} else {
- if (sched->upd_dest)
+ sched = rcu_dereference_protected(svc->scheduler, 1);
+ if (sched && sched->upd_dest)
sched->upd_dest(svc, dest);
}
}
@@ -1069,7 +1070,7 @@ static void __ip_vs_unlink_dest(struct ip_vs_service *svc,
struct ip_vs_scheduler *sched;
sched = rcu_dereference_protected(svc->scheduler, 1);
- if (sched->del_dest)
+ if (sched && sched->del_dest)
sched->del_dest(svc, dest);
}
}
@@ -1160,11 +1161,14 @@ ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u,
ip_vs_use_count_inc();
/* Lookup the scheduler by 'u->sched_name' */
- sched = ip_vs_scheduler_get(u->sched_name);
- if (sched == NULL) {
- pr_info("Scheduler module ip_vs_%s not found\n", u->sched_name);
- ret = -ENOENT;
- goto out_err;
+ if (strcmp(u->sched_name, "none")) {
+ sched = ip_vs_scheduler_get(u->sched_name);
+ if (!sched) {
+ pr_info("Scheduler module ip_vs_%s not found\n",
+ u->sched_name);
+ ret = -ENOENT;
+ goto out_err;
+ }
}
if (u->pe_name && *u->pe_name) {
@@ -1225,10 +1229,12 @@ ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u,
spin_lock_init(&svc->stats.lock);
/* Bind the scheduler */
- ret = ip_vs_bind_scheduler(svc, sched);
- if (ret)
- goto out_err;
- sched = NULL;
+ if (sched) {
+ ret = ip_vs_bind_scheduler(svc, sched);
+ if (ret)
+ goto out_err;
+ sched = NULL;
+ }
/* Bind the ct retriever */
RCU_INIT_POINTER(svc->pe, pe);
@@ -1276,17 +1282,20 @@ ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u,
static int
ip_vs_edit_service(struct ip_vs_service *svc, struct ip_vs_service_user_kern *u)
{
- struct ip_vs_scheduler *sched, *old_sched;
+ struct ip_vs_scheduler *sched = NULL, *old_sched;
struct ip_vs_pe *pe = NULL, *old_pe = NULL;
int ret = 0;
/*
* Lookup the scheduler, by 'u->sched_name'
*/
- sched = ip_vs_scheduler_get(u->sched_name);
- if (sched == NULL) {
- pr_info("Scheduler module ip_vs_%s not found\n", u->sched_name);
- return -ENOENT;
+ if (strcmp(u->sched_name, "none")) {
+ sched = ip_vs_scheduler_get(u->sched_name);
+ if (!sched) {
+ pr_info("Scheduler module ip_vs_%s not found\n",
+ u->sched_name);
+ return -ENOENT;
+ }
}
old_sched = sched;
@@ -1314,14 +1323,20 @@ ip_vs_edit_service(struct ip_vs_service *svc, struct ip_vs_service_user_kern *u)
old_sched = rcu_dereference_protected(svc->scheduler, 1);
if (sched != old_sched) {
+ if (old_sched) {
+ ip_vs_unbind_scheduler(svc, old_sched);
+ RCU_INIT_POINTER(svc->scheduler, NULL);
+ /* Wait all svc->sched_data users */
+ synchronize_rcu();
+ }
/* Bind the new scheduler */
- ret = ip_vs_bind_scheduler(svc, sched);
- if (ret) {
- old_sched = sched;
- goto out;
+ if (sched) {
+ ret = ip_vs_bind_scheduler(svc, sched);
+ if (ret) {
+ ip_vs_scheduler_put(sched);
+ goto out;
+ }
}
- /* Unbind the old scheduler on success */
- ip_vs_unbind_scheduler(svc, old_sched);
}
/*
@@ -1961,6 +1976,7 @@ static int ip_vs_info_seq_show(struct seq_file *seq, void *v)
const struct ip_vs_iter *iter = seq->private;
const struct ip_vs_dest *dest;
struct ip_vs_scheduler *sched = rcu_dereference(svc->scheduler);
+ char *sched_name = sched ? sched->name : "none";
if (iter->table == ip_vs_svc_table) {
#ifdef CONFIG_IP_VS_IPV6
@@ -1969,18 +1985,18 @@ static int ip_vs_info_seq_show(struct seq_file *seq, void *v)
ip_vs_proto_name(svc->protocol),
&svc->addr.in6,
ntohs(svc->port),
- sched->name);
+ sched_name);
else
#endif
seq_printf(seq, "%s %08X:%04X %s %s ",
ip_vs_proto_name(svc->protocol),
ntohl(svc->addr.ip),
ntohs(svc->port),
- sched->name,
+ sched_name,
(svc->flags & IP_VS_SVC_F_ONEPACKET)?"ops ":"");
} else {
seq_printf(seq, "FWM %08X %s %s",
- svc->fwmark, sched->name,
+ svc->fwmark, sched_name,
(svc->flags & IP_VS_SVC_F_ONEPACKET)?"ops ":"");
}
@@ -2400,13 +2416,15 @@ static void
ip_vs_copy_service(struct ip_vs_service_entry *dst, struct ip_vs_service *src)
{
struct ip_vs_scheduler *sched;
+ char *sched_name;
sched = rcu_dereference_protected(src->scheduler, 1);
+ sched_name = sched ? sched->name : "none";
dst->protocol = src->protocol;
dst->addr = src->addr.ip;
dst->port = src->port;
dst->fwmark = src->fwmark;
- strlcpy(dst->sched_name, sched->name, sizeof(dst->sched_name));
+ strlcpy(dst->sched_name, sched_name, sizeof(dst->sched_name));
dst->flags = src->flags;
dst->timeout = src->timeout / HZ;
dst->netmask = src->netmask;
@@ -2835,6 +2853,7 @@ static int ip_vs_genl_fill_service(struct sk_buff *skb,
struct nlattr *nl_service;
struct ip_vs_flags flags = { .flags = svc->flags,
.mask = ~0 };
+ char *sched_name;
nl_service = nla_nest_start(skb, IPVS_CMD_ATTR_SERVICE);
if (!nl_service)
@@ -2853,8 +2872,9 @@ static int ip_vs_genl_fill_service(struct sk_buff *skb,
}
sched = rcu_dereference_protected(svc->scheduler, 1);
+ sched_name = sched ? sched->name : "none";
pe = rcu_dereference_protected(svc->pe, 1);
- if (nla_put_string(skb, IPVS_SVC_ATTR_SCHED_NAME, sched->name) ||
+ if (nla_put_string(skb, IPVS_SVC_ATTR_SCHED_NAME, sched_name) ||
(pe && nla_put_string(skb, IPVS_SVC_ATTR_PE_NAME, pe->name)) ||
nla_put(skb, IPVS_SVC_ATTR_FLAGS, sizeof(flags), &flags) ||
nla_put_u32(skb, IPVS_SVC_ATTR_TIMEOUT, svc->timeout / HZ) ||
diff --git a/net/netfilter/ipvs/ip_vs_sched.c b/net/netfilter/ipvs/ip_vs_sched.c
index 199760c..7e81416 100644
--- a/net/netfilter/ipvs/ip_vs_sched.c
+++ b/net/netfilter/ipvs/ip_vs_sched.c
@@ -74,7 +74,7 @@ void ip_vs_unbind_scheduler(struct ip_vs_service *svc,
if (sched->done_service)
sched->done_service(svc);
- /* svc->scheduler can not be set to NULL */
+ /* svc->scheduler can be set to NULL only by caller */
}
@@ -147,21 +147,21 @@ void ip_vs_scheduler_put(struct ip_vs_scheduler *scheduler)
void ip_vs_scheduler_err(struct ip_vs_service *svc, const char *msg)
{
- struct ip_vs_scheduler *sched;
+ struct ip_vs_scheduler *sched = rcu_dereference(svc->scheduler);
+ char *sched_name = sched ? sched->name : "none";
- sched = rcu_dereference(svc->scheduler);
if (svc->fwmark) {
IP_VS_ERR_RL("%s: FWM %u 0x%08X - %s\n",
- sched->name, svc->fwmark, svc->fwmark, msg);
+ sched_name, svc->fwmark, svc->fwmark, msg);
#ifdef CONFIG_IP_VS_IPV6
} else if (svc->af == AF_INET6) {
IP_VS_ERR_RL("%s: %s [%pI6c]:%d - %s\n",
- sched->name, ip_vs_proto_name(svc->protocol),
+ sched_name, ip_vs_proto_name(svc->protocol),
&svc->addr.in6, ntohs(svc->port), msg);
#endif
} else {
IP_VS_ERR_RL("%s: %s %pI4:%d - %s\n",
- sched->name, ip_vs_proto_name(svc->protocol),
+ sched_name, ip_vs_proto_name(svc->protocol),
&svc->addr.ip, ntohs(svc->port), msg);
}
}
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* [PATCH 3.19.y-ckt 130/130] Revert "sched/x86_64: Don't save flags on context switch"
2015-08-27 22:09 [3.19.y-ckt stable] Linux 3.19.8-ckt6 stable review Kamal Mostafa
` (128 preceding siblings ...)
2015-08-27 22:12 ` [PATCH 3.19.y-ckt 129/130] ipvs: fix crash if scheduler is changed Kamal Mostafa
@ 2015-08-27 22:12 ` Kamal Mostafa
2015-08-29 16:20 ` Andy Lutomirski
129 siblings, 1 reply; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-27 22:12 UTC (permalink / raw)
To: linux-kernel, stable, kernel-team
Cc: Andy Lutomirski, Linus Torvalds, Peter Zijlstra, Thomas Gleixner,
Ingo Molnar, Kamal Mostafa
3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Andy Lutomirski <luto@kernel.org>
commit 512255a2ad2c832ca7d4de9f31245f73781922d0 upstream.
This reverts commit:
2c7577a75837 ("sched/x86_64: Don't save flags on context switch")
It was a nice speedup. It's also not quite correct: SYSENTER
enables interrupts too early.
We can re-add this optimization once the SYSENTER code is beaten
into shape, which should happen in 4.3 or 4.4.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/85f56651f59f76624e80785a8fd3bdfdd089a818.1439838962.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
arch/x86/include/asm/switch_to.h | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/arch/x86/include/asm/switch_to.h b/arch/x86/include/asm/switch_to.h
index 751bf4b..d7f3b3b 100644
--- a/arch/x86/include/asm/switch_to.h
+++ b/arch/x86/include/asm/switch_to.h
@@ -79,12 +79,12 @@ do { \
#else /* CONFIG_X86_32 */
/* frame pointer must be last for get_wchan */
-#define SAVE_CONTEXT "pushq %%rbp ; movq %%rsi,%%rbp\n\t"
-#define RESTORE_CONTEXT "movq %%rbp,%%rsi ; popq %%rbp\t"
+#define SAVE_CONTEXT "pushf ; pushq %%rbp ; movq %%rsi,%%rbp\n\t"
+#define RESTORE_CONTEXT "movq %%rbp,%%rsi ; popq %%rbp ; popf\t"
#define __EXTRA_CLOBBER \
, "rcx", "rbx", "rdx", "r8", "r9", "r10", "r11", \
- "r12", "r13", "r14", "r15", "flags"
+ "r12", "r13", "r14", "r15"
#ifdef CONFIG_CC_STACKPROTECTOR
#define __switch_canary \
@@ -100,11 +100,7 @@ do { \
#define __switch_canary_iparam
#endif /* CC_STACKPROTECTOR */
-/*
- * There is no need to save or restore flags, because flags are always
- * clean in kernel mode, with the possible exception of IOPL. Kernel IOPL
- * has no effect.
- */
+/* Save restore flags to clear handle leaking NT */
#define switch_to(prev, next, last) \
asm volatile(SAVE_CONTEXT \
"movq %%rsp,%P[threadrsp](%[prev])\n\t" /* save RSP */ \
--
1.9.1
^ permalink raw reply related [flat|nested] 138+ messages in thread* Re: [PATCH 3.19.y-ckt 130/130] Revert "sched/x86_64: Don't save flags on context switch"
2015-08-27 22:12 ` [PATCH 3.19.y-ckt 130/130] Revert "sched/x86_64: Don't save flags on context switch" Kamal Mostafa
@ 2015-08-29 16:20 ` Andy Lutomirski
2015-08-31 16:08 ` Kamal Mostafa
0 siblings, 1 reply; 138+ messages in thread
From: Andy Lutomirski @ 2015-08-29 16:20 UTC (permalink / raw)
To: Kamal Mostafa
Cc: linux-kernel@vger.kernel.org, stable, kernel-team,
Andy Lutomirski, Linus Torvalds, Peter Zijlstra, Thomas Gleixner,
Ingo Molnar
If you haven't pushed this out yet, I would hold off. I think it may
be unnecessary.
--Andy
On Thu, Aug 27, 2015 at 3:12 PM, Kamal Mostafa <kamal@canonical.com> wrote:
> 3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
>
> ------------------
>
> From: Andy Lutomirski <luto@kernel.org>
>
> commit 512255a2ad2c832ca7d4de9f31245f73781922d0 upstream.
>
> This reverts commit:
>
> 2c7577a75837 ("sched/x86_64: Don't save flags on context switch")
>
> It was a nice speedup. It's also not quite correct: SYSENTER
> enables interrupts too early.
>
> We can re-add this optimization once the SYSENTER code is beaten
> into shape, which should happen in 4.3 or 4.4.
>
> Signed-off-by: Andy Lutomirski <luto@kernel.org>
> Cc: Linus Torvalds <torvalds@linux-foundation.org>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Link: http://lkml.kernel.org/r/85f56651f59f76624e80785a8fd3bdfdd089a818.1439838962.git.luto@kernel.org
> Signed-off-by: Ingo Molnar <mingo@kernel.org>
> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
> ---
> arch/x86/include/asm/switch_to.h | 12 ++++--------
> 1 file changed, 4 insertions(+), 8 deletions(-)
>
> diff --git a/arch/x86/include/asm/switch_to.h b/arch/x86/include/asm/switch_to.h
> index 751bf4b..d7f3b3b 100644
> --- a/arch/x86/include/asm/switch_to.h
> +++ b/arch/x86/include/asm/switch_to.h
> @@ -79,12 +79,12 @@ do { \
> #else /* CONFIG_X86_32 */
>
> /* frame pointer must be last for get_wchan */
> -#define SAVE_CONTEXT "pushq %%rbp ; movq %%rsi,%%rbp\n\t"
> -#define RESTORE_CONTEXT "movq %%rbp,%%rsi ; popq %%rbp\t"
> +#define SAVE_CONTEXT "pushf ; pushq %%rbp ; movq %%rsi,%%rbp\n\t"
> +#define RESTORE_CONTEXT "movq %%rbp,%%rsi ; popq %%rbp ; popf\t"
>
> #define __EXTRA_CLOBBER \
> , "rcx", "rbx", "rdx", "r8", "r9", "r10", "r11", \
> - "r12", "r13", "r14", "r15", "flags"
> + "r12", "r13", "r14", "r15"
>
> #ifdef CONFIG_CC_STACKPROTECTOR
> #define __switch_canary \
> @@ -100,11 +100,7 @@ do { \
> #define __switch_canary_iparam
> #endif /* CC_STACKPROTECTOR */
>
> -/*
> - * There is no need to save or restore flags, because flags are always
> - * clean in kernel mode, with the possible exception of IOPL. Kernel IOPL
> - * has no effect.
> - */
> +/* Save restore flags to clear handle leaking NT */
> #define switch_to(prev, next, last) \
> asm volatile(SAVE_CONTEXT \
> "movq %%rsp,%P[threadrsp](%[prev])\n\t" /* save RSP */ \
> --
> 1.9.1
>
--
Andy Lutomirski
AMA Capital Management, LLC
^ permalink raw reply [flat|nested] 138+ messages in thread* Re: [PATCH 3.19.y-ckt 130/130] Revert "sched/x86_64: Don't save flags on context switch"
2015-08-29 16:20 ` Andy Lutomirski
@ 2015-08-31 16:08 ` Kamal Mostafa
0 siblings, 0 replies; 138+ messages in thread
From: Kamal Mostafa @ 2015-08-31 16:08 UTC (permalink / raw)
To: Andy Lutomirski
Cc: linux-kernel@vger.kernel.org, stable, kernel-team,
Andy Lutomirski, Linus Torvalds, Peter Zijlstra, Thomas Gleixner,
Ingo Molnar
On Sat, 2015-08-29 at 09:20 -0700, Andy Lutomirski wrote:
> If you haven't pushed this out yet, I would hold off. I think it may
> be unnecessary.
Okay, I've dropped this revert from the 3.19-stable queue. And for
reference, your post: http://seclists.org/oss-sec/2015/q3/456
Thanks very much for the heads-up, Andy.
-Kamal
> On Thu, Aug 27, 2015 at 3:12 PM, Kamal Mostafa <kamal@canonical.com> wrote:
> > 3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
> >
> > ------------------
> >
> > From: Andy Lutomirski <luto@kernel.org>
> >
> > commit 512255a2ad2c832ca7d4de9f31245f73781922d0 upstream.
> >
> > This reverts commit:
> >
> > 2c7577a75837 ("sched/x86_64: Don't save flags on context switch")
> >
> > It was a nice speedup. It's also not quite correct: SYSENTER
> > enables interrupts too early.
> >
> > We can re-add this optimization once the SYSENTER code is beaten
> > into shape, which should happen in 4.3 or 4.4.
> >
> > Signed-off-by: Andy Lutomirski <luto@kernel.org>
> > Cc: Linus Torvalds <torvalds@linux-foundation.org>
> > Cc: Peter Zijlstra <peterz@infradead.org>
> > Cc: Thomas Gleixner <tglx@linutronix.de>
> > Link: http://lkml.kernel.org/r/85f56651f59f76624e80785a8fd3bdfdd089a818.1439838962.git.luto@kernel.org
> > Signed-off-by: Ingo Molnar <mingo@kernel.org>
> > Signed-off-by: Kamal Mostafa <kamal@canonical.com>
> > ---
> > arch/x86/include/asm/switch_to.h | 12 ++++--------
> > 1 file changed, 4 insertions(+), 8 deletions(-)
> >
> > diff --git a/arch/x86/include/asm/switch_to.h b/arch/x86/include/asm/switch_to.h
> > index 751bf4b..d7f3b3b 100644
> > --- a/arch/x86/include/asm/switch_to.h
> > +++ b/arch/x86/include/asm/switch_to.h
> > @@ -79,12 +79,12 @@ do { \
> > #else /* CONFIG_X86_32 */
> >
> > /* frame pointer must be last for get_wchan */
> > -#define SAVE_CONTEXT "pushq %%rbp ; movq %%rsi,%%rbp\n\t"
> > -#define RESTORE_CONTEXT "movq %%rbp,%%rsi ; popq %%rbp\t"
> > +#define SAVE_CONTEXT "pushf ; pushq %%rbp ; movq %%rsi,%%rbp\n\t"
> > +#define RESTORE_CONTEXT "movq %%rbp,%%rsi ; popq %%rbp ; popf\t"
> >
> > #define __EXTRA_CLOBBER \
> > , "rcx", "rbx", "rdx", "r8", "r9", "r10", "r11", \
> > - "r12", "r13", "r14", "r15", "flags"
> > + "r12", "r13", "r14", "r15"
> >
> > #ifdef CONFIG_CC_STACKPROTECTOR
> > #define __switch_canary \
> > @@ -100,11 +100,7 @@ do { \
> > #define __switch_canary_iparam
> > #endif /* CC_STACKPROTECTOR */
> >
> > -/*
> > - * There is no need to save or restore flags, because flags are always
> > - * clean in kernel mode, with the possible exception of IOPL. Kernel IOPL
> > - * has no effect.
> > - */
> > +/* Save restore flags to clear handle leaking NT */
> > #define switch_to(prev, next, last) \
> > asm volatile(SAVE_CONTEXT \
> > "movq %%rsp,%P[threadrsp](%[prev])\n\t" /* save RSP */ \
> > --
> > 1.9.1
> >
>
>
>
^ permalink raw reply [flat|nested] 138+ messages in thread