[patch 00/28] 2.6.27.30-stable review

[patch 00/28] 2.6.27.30-stable review

[Greg KH]

This is the start of the stable review cycle for the 2.6.27.30 release.
There are 28 patches in this series, all will be posted as a response to
this one.  If anyone has any issues with these being applied, please let
us know.  If anyone is a maintainer of the proper subsystem, and wants
to add a Signed-off-by: line to the patch, please respond with it.

These patches are sent out with a number of different people on the Cc:
line.  If you wish to be a reviewer, please email stable@kernel.org to
add your name to the list.  If you want to be off the reviewer list,
also email us.

Responses should be made by Saturday, August 15, 2009 19:00:00 UTC.
Anything received after that time might be too late.

The whole patch series can be found in one patch at:
	kernel.org/pub/linux/kernel/v2.6/stable-review/patch-2.6.27.30-rc1.gz
and the diffstat can be found below.


thanks,

greg k-h

------------

 Makefile                           |    2 +-
 arch/parisc/kernel/cache.c         |   23 +++++++++++++++--------
 arch/parisc/kernel/pci-dma.c       |   12 ++++++++----
 arch/x86/kernel/pci-gart_64.c      |   10 ++++++++--
 block/Kconfig                      |   11 +++++++----
 drivers/firewire/fw-sbp2.c         |   10 +++++++++-
 drivers/hwmon/smsc47m1.c           |   11 +++++++++++
 drivers/i2c/chips/tsl2550.c        |   17 ++++++++++-------
 drivers/ieee1394/sbp2.c            |    1 +
 drivers/ieee1394/sbp2.h            |    8 +++++++-
 drivers/misc/Kconfig               |    4 +++-
 drivers/net/usb/asix.c             |    8 ++++++++
 drivers/scsi/libsas/sas_port.c     |   19 +++++++++++++++----
 drivers/usb/core/devio.c           |   10 ++++++----
 drivers/usb/serial/ftdi_sio.c      |    3 +++
 drivers/usb/serial/ftdi_sio.h      |   14 ++++++++++++++
 drivers/usb/storage/transport.c    |    2 +-
 drivers/usb/storage/unusual_devs.h |    7 +++++++
 fs/binfmt_flat.c                   |   17 ++++++++++++-----
 fs/compat_ioctl.c                  |    1 +
 fs/nfs/direct.c                    |   20 ++++++++++----------
 fs/nfs/read.c                      |    6 ++----
 fs/nfs/write.c                     |    6 ++----
 fs/proc/base.c                     |   27 ++++++++++++---------------
 fs/proc/task_mmu.c                 |    1 +
 fs/proc/task_nommu.c               |    1 +
 fs/sysfs/dir.c                     |    2 ++
 include/asm-parisc/tlbflush.h      |   13 ++++++-------
 include/asm-x86/irqflags.h         |    8 +++++++-
 include/linux/nfs_fs.h             |    5 ++---
 kernel/fork.c                      |   22 +++++++++++-----------
 mm/hugetlb.c                       |    2 +-
 mm/page_alloc.c                    |   13 +++++++++----
 net/socket.c                       |    2 +-
 sound/pci/hda/patch_realtek.c      |    2 ++
 35 files changed, 216 insertions(+), 104 deletions(-)

[patch 01/28] hugetlbfs: fix i_blocks accounting

[Greg KH]

[-- Attachment #1: hugetlbfs-fix-i_blocks-accounting.patch --]
[-- Type: text/plain, Size: 1795 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Eric Sandeen <sandeen@sandeen.net>

commit e4c6f8bed01f9f9a5c607bd689bf67e7b8a36bd8 upstream.

As reported in Red Hat bz #509671, i_blocks for files on hugetlbfs get
accounting wrong when doing something like:

   $ > foo
   $ date  > foo
   date: write error: Invalid argument
   $ /usr/bin/stat foo
     File: `foo'
     Size: 0          Blocks: 18446744073709547520 IO Block: 2097152 regular
...

This is because hugetlb_unreserve_pages() is unconditionally removing
blocks_per_huge_page(h) on each call rather than using the freed amount.
If there were 0 blocks, it goes negative, resulting in the above.

This is a regression from commit a5516438959d90b071ff0a484ce4f3f523dc3152
("hugetlb: modular state for hugetlb page size")

which did:

-	inode->i_blocks -= BLOCKS_PER_HUGEPAGE * freed;
+	inode->i_blocks -= blocks_per_huge_page(h);

so just put back the freed multiplier, and it's all happy again.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Acked-by: Andi Kleen <andi@firstfloor.org>
Cc: William Lee Irwin III <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 mm/hugetlb.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2257,7 +2257,7 @@ void hugetlb_unreserve_pages(struct inod
 	long chg = region_truncate(&inode->i_mapping->private_list, offset);
 
 	spin_lock(&inode->i_lock);
-	inode->i_blocks -= blocks_per_huge_page(h);
+	inode->i_blocks -= (blocks_per_huge_page(h) * freed);
 	spin_unlock(&inode->i_lock);
 
 	hugetlb_put_quota(inode->i_mapping, (chg - freed));

[patch 02/28] hwmon: (smsc47m1) Differentiate between LPC47M233 and LPC47M292

[Greg KH]

[-- Attachment #1: hwmon-differentiate-between-lpc47m233-and-lpc47m292.patch --]
[-- Type: text/plain, Size: 1611 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Jean Delvare <khali@linux-fr.org>

commit 1b54ab450b180eaeeb0eee6f0f64349246a22c14 upstream.

The SMSC LPC47M233 and LPC47M292 chips have the same device ID but
are not compatible.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Juerg Haefliger <juergh@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/hwmon/smsc47m1.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

--- a/drivers/hwmon/smsc47m1.c
+++ b/drivers/hwmon/smsc47m1.c
@@ -85,6 +85,7 @@ superio_exit(void)
 #define SUPERIO_REG_ACT		0x30
 #define SUPERIO_REG_BASE	0x60
 #define SUPERIO_REG_DEVID	0x20
+#define SUPERIO_REG_DEVREV	0x21
 
 /* Logical device registers */
 
@@ -428,6 +429,9 @@ static int __init smsc47m1_find(unsigned
 	 * The LPC47M292 (device id 0x6B) is somewhat compatible, but it
 	 * supports a 3rd fan, and the pin configuration registers are
 	 * unfortunately different.
+	 * The LPC47M233 has the same device id (0x6B) but is not compatible.
+	 * We check the high bit of the device revision register to
+	 * differentiate them.
 	 */
 	switch (val) {
 	case 0x51:
@@ -447,6 +451,13 @@ static int __init smsc47m1_find(unsigned
 		sio_data->type = smsc47m1;
 		break;
 	case 0x6B:
+		if (superio_inb(SUPERIO_REG_DEVREV) & 0x80) {
+			pr_debug(DRVNAME ": "
+				 "Found SMSC LPC47M233, unsupported\n");
+			superio_exit();
+			return -ENODEV;
+		}
+
 		pr_info(DRVNAME ": Found SMSC LPC47M292\n");
 		sio_data->type = smsc47m2;
 		break;

[patch 03/28] i2c/tsl2550: Fix lux value in dark environment

[Greg KH]

[-- Attachment #1: i2c-tsl2550-fix-lux-value-in-dark-environment.patch --]
[-- Type: text/plain, Size: 1601 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Michele Jr De Candia <michele.decandia@valueteam.com>

commit 96f699ad09c8b3c55cd229506a9add0047838e3e upstream.

I've tested TSL2550 driver and I've found a bug: when light is off,
returned value from tsl2550_calculate_lux function is -1 when it should
be 0 (sensor correctly read that light was off).

I think the bug is that a zero c0 value (approximated value of ch0) is
misinterpreted as an error.

Signed-off-by: Michele Jr De Candia <michele.decandia@valueteam.com>
Acked-by: Rodolfo Giometti <giometti@linux.it>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/i2c/chips/tsl2550.c |   17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

--- a/drivers/i2c/chips/tsl2550.c
+++ b/drivers/i2c/chips/tsl2550.c
@@ -27,7 +27,7 @@
 #include <linux/delay.h>
 
 #define TSL2550_DRV_NAME	"tsl2550"
-#define DRIVER_VERSION		"1.1.1"
+#define DRIVER_VERSION		"1.1.2"
 
 /*
  * Defines
@@ -189,13 +189,16 @@ static int tsl2550_calculate_lux(u8 ch0,
 	u8 r = 128;
 
 	/* Avoid division by 0 and count 1 cannot be greater than count 0 */
-	if (c0 && (c1 <= c0))
-		r = c1 * 128 / c0;
+	if (c1 <= c0)
+		if (c0) {
+			r = c1 * 128 / c0;
+
+			/* Calculate LUX */
+			lux = ((c0 - c1) * ratio_lut[r]) / 256;
+		} else
+			lux = 0;
 	else
-		return -1;
-
-	/* Calculate LUX */
-	lux = ((c0 - c1) * ratio_lut[r]) / 256;
+		return -EAGAIN;
 
 	/* LUX range check */
 	return lux > TSL2550_MAX_LUX ? TSL2550_MAX_LUX : lux;

[patch 04/28] SCSI: libsas: reuse the original port when hotplugging phys in wide ports

[Greg KH]

[-- Attachment #1: libsas-reuse-the-original-port-when-hotplugging-phys-in-wide-ports.patch --]
[-- Type: text/plain, Size: 2335 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Tom Peng <tom_peng@usish.com>

commit 5381837f125cc62ad703fbcdfcd7566fc81fd404 upstream.

There's a hotplug problem in the way libsas allocates ports: it loops over the
available ports first trying to add to an existing for a wide port and
otherwise allocating the next free port.  This scheme only works if the port
array is packed from zero, which fails if a port gets hot unplugged and the
array becomes sparse.  In that case, a new port is formed even if there's a
wide port it should be part of.  Fix this by creating two loops over all the
ports:  the first to see if the phy should be part of a wide port and the
second to form a new port in an empty port slot.

Signed-off-by: Tom Peng <tom_peng@usish.com>
Signed-off-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: Lindar Liu <lindar_liu@usish.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/scsi/libsas/sas_port.c |   19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

--- a/drivers/scsi/libsas/sas_port.c
+++ b/drivers/scsi/libsas/sas_port.c
@@ -56,7 +56,7 @@ static void sas_form_port(struct asd_sas
 		}
 	}
 
-	/* find a port */
+	/* see if the phy should be part of a wide port */
 	spin_lock_irqsave(&sas_ha->phy_port_lock, flags);
 	for (i = 0; i < sas_ha->num_phys; i++) {
 		port = sas_ha->sas_port[i];
@@ -69,12 +69,23 @@ static void sas_form_port(struct asd_sas
 			SAS_DPRINTK("phy%d matched wide port%d\n", phy->id,
 				    port->id);
 			break;
-		} else if (*(u64 *) port->sas_addr == 0 && port->num_phys==0) {
-			memcpy(port->sas_addr, phy->sas_addr, SAS_ADDR_SIZE);
-			break;
 		}
 		spin_unlock(&port->phy_list_lock);
 	}
+	/* The phy does not match any existing port, create a new one */
+	if (i == sas_ha->num_phys) {
+		for (i = 0; i < sas_ha->num_phys; i++) {
+			port = sas_ha->sas_port[i];
+			spin_lock(&port->phy_list_lock);
+			if (*(u64 *)port->sas_addr == 0
+				&& port->num_phys == 0) {
+				memcpy(port->sas_addr, phy->sas_addr,
+					SAS_ADDR_SIZE);
+				break;
+			}
+			spin_unlock(&port->phy_list_lock);
+		}
+	}
 
 	if (i >= sas_ha->num_phys) {
 		printk(KERN_NOTICE "%s: couldn't find a free port, bug?\n",

[patch 05/28] Make SCSI SG v4 driver enabled by default and remove EXPERIMENTAL dependency, since udev depends on BSG

[Greg KH]

[-- Attachment #1: make-scsi-sg-v4-driver-enabled-by-default-and-remove-experimental-dependency-since-udev-depends-on-bsg.patch --]
[-- Type: text/plain, Size: 1387 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: John Stoffel <john@stoffel.org>

commit 14d9fa352592582e457cf75022202766baac1348 upstream.

Make Block Layer SG support v4 the default, since recent udev versions
depend on this to access serial numbers and other low level info properly.

This should be backported to older kernels as well, since most distros have
enabled this for a long time.

Signed-off-by: John Stoffel <john@stoffel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 block/Kconfig |   11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

--- a/block/Kconfig
+++ b/block/Kconfig
@@ -67,9 +67,9 @@ config LSF
 	  If unsure, say Y.
 
 config BLK_DEV_BSG
-	bool "Block layer SG support v4 (EXPERIMENTAL)"
-	depends on EXPERIMENTAL
-	---help---
+	bool "Block layer SG support v4"
+	default y
+	help
 	  Saying Y here will enable generic SG (SCSI generic) v4 support
 	  for any block device.
 
@@ -79,7 +79,10 @@ config BLK_DEV_BSG
 	  protocols (e.g. Task Management Functions and SMP in Serial
 	  Attached SCSI).
 
-	  If unsure, say N.
+	  This option is required by recent UDEV versions to properly
+	  access device serial numbers, etc.
+
+	  If unsure, say Y.
 
 config BLK_DEV_INTEGRITY
 	bool "Block layer data integrity support"

[patch 06/28] page-allocator: preserve PFN ordering when __GFP_COLD is set

[Greg KH]

[-- Attachment #1: page-allocator-preserve-pfn-ordering-when-__gfp_cold-is-set.patch --]
[-- Type: text/plain, Size: 2828 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Mel Gorman <mel@csn.ul.ie>

commit e084b2d95e48b31aa45f9c49ffc6cdae8bdb21d4 upstream.

Fix a post-2.6.24 performace regression caused by
3dfa5721f12c3d5a441448086bee156887daa961 ("page-allocator: preserve PFN
ordering when __GFP_COLD is set").

Narayanan reports "The regression is around 15%.  There is no disk controller
as our setup is based on Samsung OneNAND used as a memory mapped device on a
OMAP2430 based board."

The page allocator tries to preserve contiguous PFN ordering when returning
pages such that repeated callers to the allocator have a strong chance of
getting physically contiguous pages, particularly when external fragmentation
is low.  However, of the bulk of the allocations have __GFP_COLD set as they
are due to aio_read() for example, then the PFNs are in reverse PFN order.
This can cause performance degration when used with IO controllers that could
have merged the requests.

This patch attempts to preserve the contiguous ordering of PFNs for users of
__GFP_COLD.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Reported-by: Narayananu Gopalakrishnan <narayanan.g@samsung.com>
Tested-by: Narayanan Gopalakrishnan <narayanan.g@samsung.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 mm/page_alloc.c |   13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -846,7 +846,7 @@ static struct page *__rmqueue(struct zon
  */
 static int rmqueue_bulk(struct zone *zone, unsigned int order, 
 			unsigned long count, struct list_head *list,
-			int migratetype)
+			int migratetype, int cold)
 {
 	int i;
 	
@@ -865,7 +865,10 @@ static int rmqueue_bulk(struct zone *zon
 		 * merge IO requests if the physical pages are ordered
 		 * properly.
 		 */
-		list_add(&page->lru, list);
+		if (likely(cold == 0))
+			list_add(&page->lru, list);
+		else
+			list_add_tail(&page->lru, list);
 		set_page_private(page, migratetype);
 		list = &page->lru;
 	}
@@ -1068,7 +1071,8 @@ again:
 		local_irq_save(flags);
 		if (!pcp->count) {
 			pcp->count = rmqueue_bulk(zone, 0,
-					pcp->batch, &pcp->list, migratetype);
+					pcp->batch, &pcp->list,
+					migratetype, cold);
 			if (unlikely(!pcp->count))
 				goto failed;
 		}
@@ -1087,7 +1091,8 @@ again:
 		/* Allocate more to the pcp list if necessary */
 		if (unlikely(&page->lru == &pcp->list)) {
 			pcp->count += rmqueue_bulk(zone, 0,
-					pcp->batch, &pcp->list, migratetype);
+					pcp->batch, &pcp->list,
+					migratetype, cold);
 			page = list_entry(pcp->list.next, struct page, lru);
 		}
 

[patch 07/28] sysfs: fix hardlink count on device_move

[Greg KH]

[-- Attachment #1: sysfs-fix-hardlink-count-on-device_move.patch --]
[-- Type: text/plain, Size: 1244 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>

commit 0f58b44582001c8bcdb75f36cf85ebbe5170e959 upstream.

Update directory hardlink count when moving kobjects to a new parent.
Fixes the following problem which occurs when several devices are
moved to the same parent and then unregistered:

> ls -laF /sys/devices/css0/defunct/
> total 0
> drwxr-xr-x 4294967295 root root    0 2009-07-14 17:02 ./
> drwxr-xr-x        114 root root    0 2009-07-14 17:02 ../
> drwxr-xr-x          2 root root    0 2009-07-14 17:01 power/
> -rw-r--r--          1 root root 4096 2009-07-14 17:01 uevent

Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 fs/sysfs/dir.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -914,8 +914,10 @@ again:
 	/* Remove from old parent's list and insert into new parent's list. */
 	sysfs_unlink_sibling(sd);
 	sysfs_get(new_parent_sd);
+	drop_nlink(old_parent->d_inode);
 	sysfs_put(sd->s_parent);
 	sd->s_parent = new_parent_sd;
+	inc_nlink(new_parent->d_inode);
 	sysfs_link_sibling(sd);
 
  out_unlock:

[patch 08/28] thinkpad-acpi: disable broken bay and dock subdrivers

[Greg KH]

[-- Attachment #1: thinkpad-acpi-disable-broken-bay-and-dock-subdrivers.patch --]
[-- Type: text/plain, Size: 2004 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>

commit 550e7fd8afb7664ae7cedb398c407694e2bf7d3c upstream.

Currently, the ThinkPad-ACPI bay and dock drivers are completely
broken, and cause a NULL pointer derreference in kernel mode (and,
therefore, an OOPS) when they try to issue events (i.e. on dock,
undock, bay ejection, etc).

OTOH, the standard ACPI dock driver can handle the hotplug bays and
docks of the ThinkPads just fine (including batteries) as of 2.6.27.
In fact, it does a much better job of it than thinkpad-acpi ever did.

It is just not worth the hassle to find a way to fix this crap without
breaking the (deprecated) thinkpad-acpi dock/bay ABI.  This is old,
deprecated code that sees little testing or use.

As a quick fix suitable for -stable backports, mark the thinkpad-acpi
bay and dock subdrivers as BROKEN in Kconfig.  The dead code will be
removed by a later patch.

This fixes bugzilla #13669, and should be applied to 2.6.27 and later.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Reported-by: Joerg Platte <jplatte@naasa.net>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/misc/Kconfig |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -321,6 +321,7 @@ config THINKPAD_ACPI_DOCK
 	bool "Legacy Docking Station Support"
 	depends on THINKPAD_ACPI
 	depends on ACPI_DOCK=n
+	depends on BROKEN
 	default n
 	---help---
 	  Allows the thinkpad_acpi driver to handle docking station events.
@@ -334,7 +335,8 @@ config THINKPAD_ACPI_DOCK
 config THINKPAD_ACPI_BAY
 	bool "Legacy Removable Bay Support"
 	depends on THINKPAD_ACPI
-	default y
+	depends on BROKEN
+	default n
 	---help---
 	  Allows the thinkpad_acpi driver to handle removable bays.  It will
 	  electrically disable the device in the bay, and also generate

[patch 09/28] USB: storage: raise timeout in usb_stor_Bulk_max_lun

[Greg KH]

[-- Attachment #1: usb-storage-raise-timeout-in-usb_stor_bulk_max_lun.patch --]
[-- Type: text/plain, Size: 1166 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Giacomo Lozito <james@develia.org>

commit 7a777919bbeec3eac1d7904a728a60e9c2bb9c67 upstream.

Requests to get max LUN, for certain USB storage devices, require a
longer timeout before a correct reply is returned. This happens for a
Realtek USB Card Reader (0bda:0152), which has a max LUN of 3 but is set
to 0, thus losing functionality, because of the timeout occurring too
quickly.

Raising the timeout value fixes the issue and might help other devices
to return a correct max LUN value as well.

Signed-off-by: Giacomo Lozito <james@develia.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

--- a/drivers/usb/storage/transport.c
+++ b/drivers/usb/storage/transport.c
@@ -961,7 +961,7 @@ int usb_stor_Bulk_max_lun(struct us_data *us)
 				 US_BULK_GET_MAX_LUN, 
 				 USB_DIR_IN | USB_TYPE_CLASS | 
 				 USB_RECIP_INTERFACE,
-				 0, us->ifnum, us->iobuf, 1, HZ);
+				 0, us->ifnum, us->iobuf, 1, 10*HZ);
 
 	US_DEBUGP("GetMaxLUN command result is %d, data is %d\n", 
 		  result, us->iobuf[0]);

[patch 10/28] x86: fix assembly constraints in native_save_fl()

[Greg KH]

[-- Attachment #1: x86-fix-assembly-constraints-in-native_save_fl.patch --]
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2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: H. Peter Anvin <hpa@zytor.com>

commit f1f029c7bfbf4ee1918b90a431ab823bed812504 upstream.

>From Gabe Black in bugzilla 13888:

native_save_fl is implemented as follows:

  11static inline unsigned long native_save_fl(void)
  12{
  13        unsigned long flags;
  14
  15        asm volatile("# __raw_save_flags\n\t"
  16                     "pushf ; pop %0"
  17                     : "=g" (flags)
  18                     : /* no input */
  19                     : "memory");
  20
  21        return flags;
  22}

If gcc chooses to put flags on the stack, for instance because this is
inlined into a larger function with more register pressure, the offset
of the flags variable from the stack pointer will change when the
pushf is performed. gcc doesn't attempt to understand that fact, and
address used for pop will still be the same. It will write to
somewhere near flags on the stack but not actually into it and
overwrite some other value.

I saw this happen in the ide_device_add_all function when running in a
simulator I work on. I'm assuming that some quirk of how the simulated
hardware is set up caused the code path this is on to be executed when
it normally wouldn't.

A simple fix might be to change "=g" to "=r".

Reported-by: Gabe Black <spamforgabe@umich.edu>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 include/asm-x86/irqflags.h |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

--- a/include/asm-x86/irqflags.h
+++ b/include/asm-x86/irqflags.h
@@ -12,9 +12,15 @@ static inline unsigned long native_save_
 {
 	unsigned long flags;
 
+	/*
+	 * Note: this needs to be "=r" not "=rm", because we have the
+	 * stack offset from what gcc expects at the time the "pop" is
+	 * executed, and so a memory reference with respect to the stack
+	 * would end up using the wrong address.
+	 */
 	asm volatile("# __raw_save_flags\n\t"
 		     "pushf ; pop %0"
-		     : "=g" (flags)
+		     : "=r" (flags)
 		     : /* no input */
 		     : "memory");
 

[patch 11/28] parisc: ensure broadcast tlb purge runs single threaded

[Greg KH]

[-- Attachment #1: parisc-ensure-broadcast-tlb-purge-runs-single-threaded.patch --]
[-- Type: text/plain, Size: 4944 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Helge Deller <deller@gmx.de>

commit e82a3b75127188f20c7780bec580e148beb29da7 upstream

parisc: ensure broadcast tlb purge runs single threaded
The TLB flushing functions on hppa, which causes PxTLB broadcasts on the system
bus, needs to be protected by irq-safe spinlocks to avoid irq handlers to deadlock
the kernel. The deadlocks only happened during I/O intensive loads and triggered
pretty seldom, which is why this bug went so long unnoticed.

Signed-off-by: Helge Deller <deller@gmx.de>
[edited to use spin_lock_irqsave on UP as well since we'd been locking there
  all this time anyway, --kyle]
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 arch/parisc/kernel/cache.c    |   23 +++++++++++++++--------
 arch/parisc/kernel/pci-dma.c  |   12 ++++++++----
 include/asm-parisc/tlbflush.h |   13 ++++++-------
 3 files changed, 29 insertions(+), 19 deletions(-)

--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -398,12 +398,13 @@ EXPORT_SYMBOL(flush_kernel_icache_range_
 
 void clear_user_page_asm(void *page, unsigned long vaddr)
 {
+	unsigned long flags;
 	/* This function is implemented in assembly in pacache.S */
 	extern void __clear_user_page_asm(void *page, unsigned long vaddr);
 
-	purge_tlb_start();
+	purge_tlb_start(flags);
 	__clear_user_page_asm(page, vaddr);
-	purge_tlb_end();
+	purge_tlb_end(flags);
 }
 
 #define FLUSH_THRESHOLD 0x80000 /* 0.5MB */
@@ -444,20 +445,24 @@ extern void clear_user_page_asm(void *pa
 
 void clear_user_page(void *page, unsigned long vaddr, struct page *pg)
 {
+	unsigned long flags;
+
 	purge_kernel_dcache_page((unsigned long)page);
-	purge_tlb_start();
+	purge_tlb_start(flags);
 	pdtlb_kernel(page);
-	purge_tlb_end();
+	purge_tlb_end(flags);
 	clear_user_page_asm(page, vaddr);
 }
 EXPORT_SYMBOL(clear_user_page);
 
 void flush_kernel_dcache_page_addr(void *addr)
 {
+	unsigned long flags;
+
 	flush_kernel_dcache_page_asm(addr);
-	purge_tlb_start();
+	purge_tlb_start(flags);
 	pdtlb_kernel(addr);
-	purge_tlb_end();
+	purge_tlb_end(flags);
 }
 EXPORT_SYMBOL(flush_kernel_dcache_page_addr);
 
@@ -490,8 +495,10 @@ void __flush_tlb_range(unsigned long sid
 	if (npages >= 512)  /* 2MB of space: arbitrary, should be tuned */
 		flush_tlb_all();
 	else {
+		unsigned long flags;
+
 		mtsp(sid, 1);
-		purge_tlb_start();
+		purge_tlb_start(flags);
 		if (split_tlb) {
 			while (npages--) {
 				pdtlb(start);
@@ -504,7 +511,7 @@ void __flush_tlb_range(unsigned long sid
 				start += PAGE_SIZE;
 			}
 		}
-		purge_tlb_end();
+		purge_tlb_end(flags);
 	}
 }
 
--- a/arch/parisc/kernel/pci-dma.c
+++ b/arch/parisc/kernel/pci-dma.c
@@ -90,12 +90,14 @@ static inline int map_pte_uncached(pte_t
 	if (end > PMD_SIZE)
 		end = PMD_SIZE;
 	do {
+		unsigned long flags;
+
 		if (!pte_none(*pte))
 			printk(KERN_ERR "map_pte_uncached: page already exists\n");
 		set_pte(pte, __mk_pte(*paddr_ptr, PAGE_KERNEL_UNC));
-		purge_tlb_start();
+		purge_tlb_start(flags);
 		pdtlb_kernel(orig_vaddr);
-		purge_tlb_end();
+		purge_tlb_end(flags);
 		vaddr += PAGE_SIZE;
 		orig_vaddr += PAGE_SIZE;
 		(*paddr_ptr) += PAGE_SIZE;
@@ -168,11 +170,13 @@ static inline void unmap_uncached_pte(pm
 	if (end > PMD_SIZE)
 		end = PMD_SIZE;
 	do {
+		unsigned long flags;
+
 		pte_t page = *pte;
 		pte_clear(&init_mm, vaddr, pte);
-		purge_tlb_start();
+		purge_tlb_start(flags);
 		pdtlb_kernel(orig_vaddr);
-		purge_tlb_end();
+		purge_tlb_end(flags);
 		vaddr += PAGE_SIZE;
 		orig_vaddr += PAGE_SIZE;
 		pte++;
--- a/include/asm-parisc/tlbflush.h
+++ b/include/asm-parisc/tlbflush.h
@@ -12,14 +12,12 @@
  * N class systems, only one PxTLB inter processor broadcast can be
  * active at any one time on the Merced bus.  This tlb purge
  * synchronisation is fairly lightweight and harmless so we activate
- * it on all SMP systems not just the N class.  We also need to have
- * preemption disabled on uniprocessor machines, and spin_lock does that
- * nicely.
+ * it on all systems not just the N class.
  */
 extern spinlock_t pa_tlb_lock;
 
-#define purge_tlb_start(x) spin_lock(&pa_tlb_lock)
-#define purge_tlb_end(x) spin_unlock(&pa_tlb_lock)
+#define purge_tlb_start(flags)	spin_lock_irqsave(&pa_tlb_lock, flags)
+#define purge_tlb_end(flags)	spin_unlock_irqrestore(&pa_tlb_lock, flags)
 
 extern void flush_tlb_all(void);
 extern void flush_tlb_all_local(void *);
@@ -63,14 +61,15 @@ static inline void flush_tlb_mm(struct m
 static inline void flush_tlb_page(struct vm_area_struct *vma,
 	unsigned long addr)
 {
+	unsigned long flags;
 	/* For one page, it's not worth testing the split_tlb variable */
 
 	mb();
 	mtsp(vma->vm_mm->context,1);
-	purge_tlb_start();
+	purge_tlb_start(flags);
 	pdtlb(addr);
 	pitlb(addr);
-	purge_tlb_end();
+	purge_tlb_end(flags);
 }
 
 void __flush_tlb_range(unsigned long sid,

[patch 12/28] ieee1394: sbp2: add support for disks >2 TB (and 16 bytes long CDBs)

[Greg KH]

[-- Attachment #1: ieee1394-sbp2-add-support-for-disks-2-tb.patch --]
[-- Type: text/plain, Size: 1524 bytes --]


2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Stefan Richter <stefanr@s5r6.in-berlin.de>

Commit ebbb16bffa646f853899ef3fdc0ac7abab888703 upstream.

Increase the command ORB data structure to transport up to 16 bytes long
CDBs (instead of 12 bytes), and tell the SCSI mid layer about it.  This
is notably necessary for READ CAPACITY(16) and friends, i.e. support of
large disks.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/ieee1394/sbp2.c |    1 +
 drivers/ieee1394/sbp2.h |    8 +++++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

--- a/drivers/ieee1394/sbp2.c
+++ b/drivers/ieee1394/sbp2.c
@@ -874,6 +874,7 @@ static struct sbp2_lu *sbp2_alloc_device
 	}
 
 	shost->hostdata[0] = (unsigned long)lu;
+	shost->max_cmd_len = SBP2_MAX_CDB_SIZE;
 
 	if (!scsi_add_host(shost, &ud->device)) {
 		lu->shost = shost;
--- a/drivers/ieee1394/sbp2.h
+++ b/drivers/ieee1394/sbp2.h
@@ -25,6 +25,12 @@
 #define SBP2_DEVICE_NAME		"sbp2"
 
 /*
+ * There is no transport protocol limit to the CDB length,  but we implement
+ * a fixed length only.  16 bytes is enough for disks larger than 2 TB.
+ */
+#define SBP2_MAX_CDB_SIZE		16
+
+/*
  * SBP-2 specific definitions
  */
 
@@ -51,7 +57,7 @@ struct sbp2_command_orb {
 	u32 data_descriptor_hi;
 	u32 data_descriptor_lo;
 	u32 misc;
-	u8 cdb[12];
+	u8 cdb[SBP2_MAX_CDB_SIZE];
 } __attribute__((packed));
 
 #define SBP2_LOGIN_REQUEST		0x0

[patch 13/28] firewire: sbp2: add support for disks >2 TB (and 16 bytes long CDBs)

[Greg KH]

[-- Attachment #1: firewire-sbp2-add-support-for-disks-2-tb.patch --]
[-- Type: text/plain, Size: 1685 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Stefan Richter <stefanr@s5r6.in-berlin.de>

Commit af2719415a5ceae06f2a6d33e78b555e64697fc8 upstream.

Increase the command ORB data structure to transport up to 16 bytes long
CDBs (instead of 12 bytes), and tell the SCSI mid layer about it.  This
is notably necessary for READ CAPACITY(16) and friends, i.e. support of
large disks.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/firewire/fw-sbp2.c |   10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

--- a/drivers/firewire/fw-sbp2.c
+++ b/drivers/firewire/fw-sbp2.c
@@ -188,6 +188,12 @@ struct sbp2_target {
 #define SBP2_RETRY_LIMIT		0xf		/* 15 retries */
 #define SBP2_CYCLE_LIMIT		(0xc8 << 12)	/* 200 125us cycles */
 
+/*
+ * There is no transport protocol limit to the CDB length,  but we implement
+ * a fixed length only.  16 bytes is enough for disks larger than 2 TB.
+ */
+#define SBP2_MAX_CDB_SIZE		16
+
 /* Unit directory keys */
 #define SBP2_CSR_UNIT_CHARACTERISTICS	0x3a
 #define SBP2_CSR_FIRMWARE_REVISION	0x3c
@@ -293,7 +299,7 @@ struct sbp2_command_orb {
 		struct sbp2_pointer next;
 		struct sbp2_pointer data_descriptor;
 		__be32 misc;
-		u8 command_block[12];
+		u8 command_block[SBP2_MAX_CDB_SIZE];
 	} request;
 	struct scsi_cmnd *cmd;
 	scsi_done_fn_t done;
@@ -1159,6 +1165,8 @@ static int sbp2_probe(struct device *dev
 	if (fw_device_enable_phys_dma(device) < 0)
 		goto fail_shost_put;
 
+	shost->max_cmd_len = SBP2_MAX_CDB_SIZE;
+
 	if (scsi_add_host(shost, &unit->device) < 0)
 		goto fail_shost_put;
 

[patch 14/28] x86: enable GART-IOMMU only after setting up protection methods

[Greg KH]

[-- Attachment #1: x86-enable-gart-iommu-only-after-setting-up-protection-methods.patch --]
[-- Type: text/plain, Size: 1987 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Mark Langsdorf <mark.langsdorf@amd.com>

commit fe2245c905631a3a353504fc04388ce3dfaf9d9e upstream.

The current code to set up the GART as an IOMMU enables GART
translations before it removes the aperture from the kernel memory
map, sets the GART PTEs to UC, sets up the guard and scratch
pages, or does a wbinvd().  This leaves the possibility of cache
aliasing open and can cause system crashes.

Re-order the code so as to enable the GART translations only
after all safeguards are in place and the tlb has been flushed.

AMD has tested this patch on both Istanbul systems and 1st
generation Opteron systems with APG enabled and seen no adverse
effects.  Istanbul systems with HT Assist enabled sometimes
see MCE errors due to cache artifacts with the unmodified
code.

Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com>
Cc: Joerg Roedel <joerg.roedel@amd.com>
Cc: akpm@linux-foundation.org
Cc: jbarnes@virtuousgeek.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>

---
 arch/x86/kernel/pci-gart_64.c |   10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -658,8 +658,6 @@ static __init int init_k8_gatt(struct ag
 	memset(gatt, 0, gatt_size);
 	agp_gatt_table = gatt;
 
-	enable_gart_translations();
-
 	error = sysdev_class_register(&gart_sysdev_class);
 	if (!error)
 		error = sysdev_register(&device_gart);
@@ -828,6 +826,14 @@ void __init gart_iommu_init(void)
 	wbinvd();
 
 	/*
+	 * Now all caches are flushed and we can safely enable
+	 * GART hardware.  Doing it early leaves the possibility
+	 * of stale cache entries that can lead to GART PTE
+	 * errors.
+	 */
+	enable_gart_translations();
+
+	/*
 	 * Try to workaround a bug (thanks to BenH):
 	 * Set unmapped entries to a scratch page instead of 0.
 	 * Any prefetches that hit unmapped entries won't get an bus abort

[patch 15/28] asix: new device ids

[Greg KH]

[-- Attachment #1: asix-new-device-ids.patch --]
[-- Type: text/plain, Size: 1100 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Greg Kroah-Hartman <gregkh@suse.de>

commit fef7cc0893146550b286b13c0e6e914556142730 upstream.

This patch adds two new device ids to the asix driver.

One comes directly from the asix driver on their web site, the other was
reported by Armani Liao as needed for the MSI X320 to get the driver to
work properly for it.

Reported-by: Armani Liao <aliao@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

---
 drivers/net/usb/asix.c |    8 ++++++++
 1 file changed, 8 insertions(+)

--- a/drivers/net/usb/asix.c
+++ b/drivers/net/usb/asix.c
@@ -1456,6 +1456,14 @@ static const struct usb_device_id	produc
 	// ASIX 88772a
 	USB_DEVICE(0x0db0, 0xa877),
 	.driver_info = (unsigned long) &ax88772_info,
+}, {
+	// ABOCOM for pci
+	USB_DEVICE(0x14ea, 0xab11),
+	.driver_info = (unsigned long) &ax88178_info,
+}, {
+	// ASIX 88772a
+	USB_DEVICE(0x0db0, 0xa877),
+	.driver_info = (unsigned long) &ax88772_info,
 },
 	{ },		// END
 };

[patch 16/28] compat_ioctl: hook up compat handler for FIEMAP ioctl

[Greg KH]

[-- Attachment #1: compat_ioctl-hook-up-compat-handler-for-fiemap-ioctl.patch --]
[-- Type: text/plain, Size: 1261 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Eric Sandeen <sandeen@redhat.com>

commit 69130c7cf96ea853dc5be599dd6a4b98907d39cc upstream.

The FIEMAP_IOC_FIEMAP mapping ioctl was missing a 32-bit compat handler,
which means that 32-bit suerspace on 64-bit kernels cannot use this ioctl
command.

The structure is nicely aligned, padded, and sized, so it is just this
simple.

Tested w/ 32-bit ioctl tester (from Josef) on a 64-bit kernel on ext4.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Cc: <linux-ext4@vger.kernel.org>
Cc: Mark Lord <lkml@rtr.ca>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Josef Bacik <josef@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 fs/compat_ioctl.c |    1 +
 1 file changed, 1 insertion(+)

--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -1910,6 +1910,7 @@ COMPATIBLE_IOCTL(FIONCLEX)
 COMPATIBLE_IOCTL(FIOASYNC)
 COMPATIBLE_IOCTL(FIONBIO)
 COMPATIBLE_IOCTL(FIONREAD)  /* This is also TIOCINQ */
+COMPATIBLE_IOCTL(FS_IOC_FIEMAP)
 /* 0x00 */
 COMPATIBLE_IOCTL(FIBMAP)
 COMPATIBLE_IOCTL(FIGETBSZ)

[patch 17/28] execve: must clear current->clear_child_tid

[Greg KH]

[-- Attachment #1: execve-must-clear-current-clear_child_tid.patch --]
[-- Type: text/plain, Size: 4428 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Eric Dumazet <eric.dumazet@gmail.com>

commit 9c8a8228d0827e0d91d28527209988f672f97d28 upstream.

While looking at Jens Rosenboom bug report
(http://lkml.org/lkml/2009/7/27/35) about strange sys_futex call done from
a dying "ps" program, we found following problem.

clone() syscall has special support for TID of created threads.  This
support includes two features.

One (CLONE_CHILD_SETTID) is to set an integer into user memory with the
TID value.

One (CLONE_CHILD_CLEARTID) is to clear this same integer once the created
thread dies.

The integer location is a user provided pointer, provided at clone()
time.

kernel keeps this pointer value into current->clear_child_tid.

At execve() time, we should make sure kernel doesnt keep this user
provided pointer, as full user memory is replaced by a new one.

As glibc fork() actually uses clone() syscall with CLONE_CHILD_SETTID and
CLONE_CHILD_CLEARTID set, chances are high that we might corrupt user
memory in forked processes.

Following sequence could happen:

1) bash (or any program) starts a new process, by a fork() call that
   glibc maps to a clone( ...  CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID
   ...) syscall

2) When new process starts, its current->clear_child_tid is set to a
   location that has a meaning only in bash (or initial program) context
   (&THREAD_SELF->tid)

3) This new process does the execve() syscall to start a new program.
   current->clear_child_tid is left unchanged (a non NULL value)

4) If this new program creates some threads, and initial thread exits,
   kernel will attempt to clear the integer pointed by
   current->clear_child_tid from mm_release() :

        if (tsk->clear_child_tid
            && !(tsk->flags & PF_SIGNALED)
            && atomic_read(&mm->mm_users) > 1) {
                u32 __user * tidptr = tsk->clear_child_tid;
                tsk->clear_child_tid = NULL;

                /*
                 * We don't check the error code - if userspace has
                 * not set up a proper pointer then tough luck.
                 */
<< here >>      put_user(0, tidptr);
                sys_futex(tidptr, FUTEX_WAKE, 1, NULL, NULL, 0);
        }

5) OR : if new program is not multi-threaded, but spied by /proc/pid
   users (ps command for example), mm_users > 1, and the exiting program
   could corrupt 4 bytes in a persistent memory area (shm or memory mapped
   file)

If current->clear_child_tid points to a writeable portion of memory of the
new program, kernel happily and silently corrupts 4 bytes of memory, with
unexpected effects.

Fix is straightforward and should not break any sane program.

Reported-by: Jens Rosenboom <jens@mcbone.net>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sonny Rao <sonnyrao@us.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ulrich Drepper <drepper@redhat.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 kernel/fork.c |   22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -536,18 +536,18 @@ void mm_release(struct task_struct *tsk,
 	 * the value intact in a core dump, and to save the unnecessary
 	 * trouble otherwise.  Userland only wants this done for a sys_exit.
 	 */
-	if (tsk->clear_child_tid
-	    && !(tsk->flags & PF_SIGNALED)
-	    && atomic_read(&mm->mm_users) > 1) {
-		u32 __user * tidptr = tsk->clear_child_tid;
+	if (tsk->clear_child_tid) {
+		if (!(tsk->flags & PF_SIGNALED) &&
+		    atomic_read(&mm->mm_users) > 1) {
+			/*
+			 * We don't check the error code - if userspace has
+			 * not set up a proper pointer then tough luck.
+			 */
+			put_user(0, tsk->clear_child_tid);
+			sys_futex(tsk->clear_child_tid, FUTEX_WAKE,
+					1, NULL, NULL, 0);
+		}
 		tsk->clear_child_tid = NULL;
-
-		/*
-		 * We don't check the error code - if userspace has
-		 * not set up a proper pointer then tough luck.
-		 */
-		put_user(0, tidptr);
-		sys_futex(tidptr, FUTEX_WAKE, 1, NULL, NULL, 0);
 	}
 }
 

[patch 18/28] flat: fix uninitialized ptr with shared libs

[Greg KH]

[-- Attachment #1: flat-fix-uninitialized-ptr-with-shared-libs.patch --]
[-- Type: text/plain, Size: 1331 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Linus Torvalds <torvalds@linux-foundation.org>

commit 3440625d78711bee41a84cf29c3d8c579b522666 upstream.

The new credentials code broke load_flat_shared_library() as it now uses
an uninitialized cred pointer.

Reported-by: Bernd Schmidt <bernds_cb1@t-online.de>
Tested-by: Bernd Schmidt <bernds_cb1@t-online.de>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 fs/binfmt_flat.c |   17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -824,15 +824,22 @@ static int load_flat_shared_library(int 
 	if (IS_ERR(bprm.file))
 		return res;
 
+	bprm.cred = prepare_exec_creds();
+	res = -ENOMEM;
+	if (!bprm.cred)
+		goto out;
+
 	res = prepare_binprm(&bprm);
 
 	if (res <= (unsigned long)-4096)
 		res = load_flat_file(&bprm, libs, id, NULL);
-	if (bprm.file) {
-		allow_write_access(bprm.file);
-		fput(bprm.file);
-		bprm.file = NULL;
-	}
+
+	abort_creds(bprm.cred);
+
+out:
+	allow_write_access(bprm.file);
+	fput(bprm.file);
+
 	return(res);
 }
 

[patch 19/28] USB: devio: Properly do access_ok() checks

[Greg KH]

[-- Attachment #1: usb-devio-properly-do-access_ok-checks.patch --]
[-- Type: text/plain, Size: 1717 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Michael Buesch <mb@bu3sch.de>

commit 18753ebc8a98efe0e8ff6167afb31cef220c8e50 upstream.

access_ok() checks must be done on every part of the userspace structure
that is accessed. If access_ok() on one part of the struct succeeded, it
does not imply it will succeed on other parts of the struct. (Does
depend on the architecture implementation of access_ok()).

This changes the __get_user() users to first check access_ok() on the
data structure.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/usb/core/devio.c |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -1305,7 +1305,8 @@ static int get_urb32(struct usbdevfs_urb
 		     struct usbdevfs_urb32 __user *uurb)
 {
 	__u32  uptr;
-	if (get_user(kurb->type, &uurb->type) ||
+	if (!access_ok(VERIFY_READ, uurb, sizeof(*uurb)) ||
+	    __get_user(kurb->type, &uurb->type) ||
 	    __get_user(kurb->endpoint, &uurb->endpoint) ||
 	    __get_user(kurb->status, &uurb->status) ||
 	    __get_user(kurb->flags, &uurb->flags) ||
@@ -1522,8 +1523,9 @@ static int proc_ioctl_compat(struct dev_
 	u32 udata;
 
 	uioc = compat_ptr((long)arg);
-	if (get_user(ctrl.ifno, &uioc->ifno) ||
-	    get_user(ctrl.ioctl_code, &uioc->ioctl_code) ||
+	if (!access_ok(VERIFY_READ, uioc, sizeof(*uioc)) ||
+	    __get_user(ctrl.ifno, &uioc->ifno) ||
+	    __get_user(ctrl.ioctl_code, &uioc->ioctl_code) ||
 	    __get_user(udata, &uioc->data))
 		return -EFAULT;
 	ctrl.data = compat_ptr(udata);

[patch 20/28] USB: ftdi_sio: add vendor and product id for Bayer glucose meter serial converter cable

[Greg KH]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: usb-ftdi_sio-add-vendor-and-product-id-for-bayer-glucose-meter-serial-converter-cable.patch --]
[-- Type: text/plain, Size: 1555 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Marko Hänninen <bugitus@gmail.com>

commit c47aacc67a3d26dfab9c9b8965975ed2b2010b30 upstream.

Attached patch adds USB vendor and product IDs for Bayer's USB to serial
converter cable used by Bayer blood glucose meters. It seems to be a
FT232RL based device and works without any problem with ftdi_sio driver
when this patch is applied. See: http://winglucofacts.com/cables/


Signed-off-by: Marko Hänninen <bugitus@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/usb/serial/ftdi_sio.c |    1 +
 drivers/usb/serial/ftdi_sio.h |    7 +++++++
 2 files changed, 8 insertions(+)

--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -663,6 +663,7 @@ static struct usb_device_id id_table_com
 	{ USB_DEVICE(ADI_VID, ADI_GNICE_PID),
 		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
 	{ USB_DEVICE(JETI_VID, JETI_SPC1201_PID) },
+	{ USB_DEVICE(BAYER_VID, BAYER_CONTOUR_CABLE_PID) },
 	{ },					/* Optional parameter entry */
 	{ }					/* Terminating entry */
 };
--- a/drivers/usb/serial/ftdi_sio.h
+++ b/drivers/usb/serial/ftdi_sio.h
@@ -897,6 +897,13 @@
 #define JETI_SPC1201_PID	0x04b2
 
 /*
+ * Bayer Ascensia Contour blood glucose meter USB-converter cable.
+ * http://winglucofacts.com/cables/
+ */
+#define BAYER_VID                      0x1A79
+#define BAYER_CONTOUR_CABLE_PID        0x6001
+
+/*
  *   BmRequestType:  1100 0000b
  *   bRequest:       FTDI_E2_READ
  *   wValue:         0

[patch 21/28] USB: ftdi_sio: add product_id for Marvell OpenRD Base, Client

[Greg KH]

[-- Attachment #1: usb-ftdi_sio-add-product_id-for-marvell-openrd-base-client.patch --]
[-- Type: text/plain, Size: 1327 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Dhaval Vasa <dhaval.vasa@einfochips.com>

commit 50d0678e2026c18e4147f0b16b5853113659b82d upstream.

reference:
http://www.open-rd.org

Signed-off-by: Dhaval Vasa <dhaval.vasa@einfochips.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/usb/serial/ftdi_sio.c |    2 ++
 drivers/usb/serial/ftdi_sio.h |    7 +++++++
 2 files changed, 9 insertions(+)

--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -664,6 +664,8 @@ static struct usb_device_id id_table_com
 		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
 	{ USB_DEVICE(JETI_VID, JETI_SPC1201_PID) },
 	{ USB_DEVICE(BAYER_VID, BAYER_CONTOUR_CABLE_PID) },
+	{ USB_DEVICE(FTDI_VID, MARVELL_OPENRD_PID),
+		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
 	{ },					/* Optional parameter entry */
 	{ }					/* Terminating entry */
 };
--- a/drivers/usb/serial/ftdi_sio.h
+++ b/drivers/usb/serial/ftdi_sio.h
@@ -904,6 +904,13 @@
 #define BAYER_CONTOUR_CABLE_PID        0x6001
 
 /*
+ * Marvell OpenRD Base, Client
+ * http://www.open-rd.org
+ * OpenRD Base, Client use VID 0x0403
+ */
+#define MARVELL_OPENRD_PID	0x9e90
+
+/*
  *   BmRequestType:  1100 0000b
  *   bRequest:       FTDI_E2_READ
  *   wValue:         0

[patch 22/28] USB: storage: include Prolific Technology USB drive in unusual_devs list

[Greg KH]

[-- Attachment #1: usb-storage-include-prolific-technology-usb-drive-in-unusual_devs-list.patch --]
[-- Type: text/plain, Size: 1392 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Rogerio Brito <rbrito@ime.usp.br>

commit c15e3ca1d822abba78c00b1ffc3e7b382a50396e upstream.

Add a quirk entry for the Leading Driver UD-11 usb flash drive.

As Alan Stern told me, the device doesn't deal correctly with the
locking media feature of the device, and this patch incorporates it.

Compiled, tested, working.

Signed-off-by: Rogerio Brito <rbrito@ime.usp.br>
Cc: Phil Dibowitz <phil@ipom.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Robert Hancock <hancockrwd@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/usb/storage/unusual_devs.h |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -989,6 +989,13 @@ UNUSUAL_DEV( 0x066f, 0x8000, 0x0001, 0x0
 		US_SC_DEVICE, US_PR_DEVICE, NULL,
 		US_FL_FIX_CAPACITY ),
 
+/* Reported by Rogerio Brito <rbrito@ime.usp.br> */
+UNUSUAL_DEV( 0x067b, 0x2317, 0x0001, 0x001,
+		"Prolific Technology, Inc.",
+		"Mass Storage Device",
+		US_SC_DEVICE, US_PR_DEVICE, NULL,
+		US_FL_NOT_LOCKABLE ),
+
 /* Reported by Richard -=[]=- <micro_flyer@hotmail.com> */
 /* Change to bcdDeviceMin (0x0100 to 0x0001) reported by
  * Thomas Bartosik <tbartdev@gmx-topmail.de> */

[patch 23/28] USB: usbfs: fix -ENOENT error code to be -ENODEV

[Greg KH]

[-- Attachment #1: usb-usbfs-fix-enoent-error-code-to-be-enodev.patch --]
[-- Type: text/plain, Size: 881 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Alan Stern <stern@rowland.harvard.edu>

commit 01105a246345f011fde64d24a601090b646e9e4c upstream.

This patch (as1272) changes the error code returned when an open call
for a USB device node fails to locate the corresponding device.  The
appropriate error code is -ENODEV, not -ENOENT.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/usb/core/devio.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -579,7 +579,7 @@ static int usbdev_open(struct inode *ino
 	if (!ps)
 		goto out;
 
-	ret = -ENOENT;
+	ret = -ENODEV;
 
 	/* usbdev device-node */
 	if (imajor(inode) == USB_DEVICE_MAJOR)

[patch 24/28] mm_for_maps: simplify, use ptrace_may_access()

[Greg KH]

[-- Attachment #1: mm_for_maps-simplify-use-ptrace_may_access.patch --]
[-- Type: text/plain, Size: 1823 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Oleg Nesterov <oleg@redhat.com>

commit 13f0feafa6b8aead57a2a328e2fca6a5828bf286 upstream.

It would be nice to kill __ptrace_may_access(). It requires task_lock(),
but this lock is only needed to read mm->flags in the middle.

Convert mm_for_maps() to use ptrace_may_access(), this also simplifies
the code a little bit.

Also, we do not need to take ->mmap_sem in advance. In fact I think
mm_for_maps() should not play with ->mmap_sem at all, the caller should
take this lock.

With or without this patch, without ->cred_guard_mutex held we can race
with exec() and get the new ->mm but check old creds.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 fs/proc/base.c |   23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -242,20 +242,19 @@ struct mm_struct *mm_for_maps(struct tas
 	struct mm_struct *mm = get_task_mm(task);
 	if (!mm)
 		return NULL;
+	if (mm != current->mm) {
+		/*
+		 * task->mm can be changed before security check,
+		 * in that case we must notice the change after.
+		 */
+		if (!ptrace_may_access(task, PTRACE_MODE_READ) ||
+		    mm != task->mm) {
+			mmput(mm);
+			return NULL;
+		}
+	}
 	down_read(&mm->mmap_sem);
-	task_lock(task);
-	if (task->mm != mm)
-		goto out;
-	if (task->mm != current->mm &&
-	    __ptrace_may_access(task, PTRACE_MODE_READ) < 0)
-		goto out;
-	task_unlock(task);
 	return mm;
-out:
-	task_unlock(task);
-	up_read(&mm->mmap_sem);
-	mmput(mm);
-	return NULL;
 }
 
 static int proc_pid_cmdline(struct task_struct *task, char * buffer)

[patch 25/28] mm_for_maps: shift down_read(mmap_sem) to the caller

[Greg KH]

[-- Attachment #1: mm_for_maps-shift-down_read-to-the-caller.patch --]
[-- Type: text/plain, Size: 1890 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Oleg Nesterov <oleg@redhat.com>

commit 00f89d218523b9bf6b522349c039d5ac80aa536d upstream.

mm_for_maps() takes ->mmap_sem after security checks, this looks
strange and obfuscates the locking rules. Move this lock to its
single caller, m_start().

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 fs/proc/base.c       |    8 +++-----
 fs/proc/task_mmu.c   |    1 +
 fs/proc/task_nommu.c |    1 +
 3 files changed, 5 insertions(+), 5 deletions(-)

--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -240,9 +240,8 @@ static int check_mem_permission(struct t
 struct mm_struct *mm_for_maps(struct task_struct *task)
 {
 	struct mm_struct *mm = get_task_mm(task);
-	if (!mm)
-		return NULL;
-	if (mm != current->mm) {
+
+	if (mm && mm != current->mm) {
 		/*
 		 * task->mm can be changed before security check,
 		 * in that case we must notice the change after.
@@ -250,10 +249,9 @@ struct mm_struct *mm_for_maps(struct tas
 		if (!ptrace_may_access(task, PTRACE_MODE_READ) ||
 		    mm != task->mm) {
 			mmput(mm);
-			return NULL;
+			mm = NULL;
 		}
 	}
-	down_read(&mm->mmap_sem);
 	return mm;
 }
 
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -119,6 +119,7 @@ static void *m_start(struct seq_file *m,
 	mm = mm_for_maps(priv->task);
 	if (!mm)
 		return NULL;
+	down_read(&mm->mmap_sem);
 
 	tail_vma = get_gate_vma(priv->task);
 	priv->tail_vma = tail_vma;
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -137,6 +137,7 @@ static void *m_start(struct seq_file *m,
 		priv->task = NULL;
 		return NULL;
 	}
+	down_read(&mm->mmap_sem);
 
 	/* start from the Nth VMA */
 	for (vml = mm->context.vmlist; vml; vml = vml->next)

[patch 26/28] Make sock_sendpage() use kernel_sendpage()

[Greg KH]

[-- Attachment #1: make-sock_sendpage-use-kernel_sendpage.patch --]
[-- Type: text/plain, Size: 1281 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Linus Torvalds <torvalds@linux-foundation.org>

commit e694958388c50148389b0e9b9e9e8945cf0f1b98 upstream.

kernel_sendpage() does the proper default case handling for when the
socket doesn't have a native sendpage implementation.

Now, arguably this might be something that we could instead solve by
just specifying that all protocols should do it themselves at the
protocol level, but we really only care about the common protocols.
Does anybody really care about sendpage on something like Appletalk? Not
likely.

Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Julien TINNES <julien@cr0.org>
Acked-by: Tavis Ormandy <taviso@sdf.lonestar.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 net/socket.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/socket.c
+++ b/net/socket.c
@@ -695,7 +695,7 @@ static ssize_t sock_sendpage(struct file
 	if (more)
 		flags |= MSG_MORE;
 
-	return sock->ops->sendpage(sock, page, offset, size, flags);
+	return kernel_sendpage(sock, page, offset, size, flags);
 }
 
 static ssize_t sock_splice_read(struct file *file, loff_t *ppos,

[patch 27/28] ALSA: hda - Add missing vmaster initialization for ALC269

[Greg KH]

[-- Attachment #1: alsa-hda-add-missing-vmaster-initialization-for-alc269.patch --]
[-- Type: text/plain, Size: 822 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Takashi Iwai <tiwai@suse.de>

commit 100d5eb36ba20dc0b99a17ea2b9800c567bfc3d1 upstream.

Without the initialization of vmaster NID, the dB information got
confused for ALC269 codec.

Reference: Novell bnc#527361
	https://bugzilla.novell.com/show_bug.cgi?id=527361

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 sound/pci/hda/patch_realtek.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -13767,6 +13767,8 @@ static int patch_alc861vd(struct hda_cod
 
 	spec->vmaster_nid = 0x02;
 
+	spec->vmaster_nid = 0x02;
+
 	codec->patch_ops = alc_patch_ops;
 
 	if (board_config == ALC861VD_AUTO)

Re: [patch 27/28] ALSA: hda - Add missing vmaster initialization for ALC269

[Linus Torvalds]

On Thu, 13 Aug 2009, Greg KH wrote:
> 
> From: Takashi Iwai <tiwai@suse.de>
> 
> commit 100d5eb36ba20dc0b99a17ea2b9800c567bfc3d1 upstream.
> 
> Without the initialization of vmaster NID, the dB information got
> confused for ALC269 codec.
> 
> Reference: Novell bnc#527361
> 	https://bugzilla.novell.com/show_bug.cgi?id=527361
> 
> Signed-off-by: Takashi Iwai <tiwai@suse.de>
> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
> 
> ---
>  sound/pci/hda/patch_realtek.c |    2 ++
>  1 file changed, 2 insertions(+)
> 
> --- a/sound/pci/hda/patch_realtek.c
> +++ b/sound/pci/hda/patch_realtek.c
> @@ -13767,6 +13767,8 @@ static int patch_alc861vd(struct hda_cod
>  
>  	spec->vmaster_nid = 0x02;
>  
> +	spec->vmaster_nid = 0x02;
> +
>  	codec->patch_ops = alc_patch_ops;

You seem to have already applied this one earlier ;)

		Linus

Re: [patch 27/28] ALSA: hda - Add missing vmaster initialization for ALC269

[Greg KH]

On Thu, Aug 13, 2009 at 12:59:05PM -0700, Linus Torvalds wrote:
> 
> 
> On Thu, 13 Aug 2009, Greg KH wrote:
> > 
> > From: Takashi Iwai <tiwai@suse.de>
> > 
> > commit 100d5eb36ba20dc0b99a17ea2b9800c567bfc3d1 upstream.
> > 
> > Without the initialization of vmaster NID, the dB information got
> > confused for ALC269 codec.
> > 
> > Reference: Novell bnc#527361
> > 	https://bugzilla.novell.com/show_bug.cgi?id=527361
> > 
> > Signed-off-by: Takashi Iwai <tiwai@suse.de>
> > Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
> > 
> > ---
> >  sound/pci/hda/patch_realtek.c |    2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > --- a/sound/pci/hda/patch_realtek.c
> > +++ b/sound/pci/hda/patch_realtek.c
> > @@ -13767,6 +13767,8 @@ static int patch_alc861vd(struct hda_cod
> >  
> >  	spec->vmaster_nid = 0x02;
> >  
> > +	spec->vmaster_nid = 0x02;
> > +
> >  	codec->patch_ops = alc_patch_ops;
> 
> You seem to have already applied this one earlier ;)

Heh, good catch, I've now removed this one from the queue.

thanks for the review,

greg k-h

Re: [patch 27/28] ALSA: hda - Add missing vmaster initialization for ALC269

[Takashi Iwai]

At Thu, 13 Aug 2009 13:12:22 -0700,
Greg KH wrote:
> 
> On Thu, Aug 13, 2009 at 12:59:05PM -0700, Linus Torvalds wrote:
> > 
> > 
> > On Thu, 13 Aug 2009, Greg KH wrote:
> > > 
> > > From: Takashi Iwai <tiwai@suse.de>
> > > 
> > > commit 100d5eb36ba20dc0b99a17ea2b9800c567bfc3d1 upstream.
> > > 
> > > Without the initialization of vmaster NID, the dB information got
> > > confused for ALC269 codec.
> > > 
> > > Reference: Novell bnc#527361
> > > 	https://bugzilla.novell.com/show_bug.cgi?id=527361
> > > 
> > > Signed-off-by: Takashi Iwai <tiwai@suse.de>
> > > Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
> > > 
> > > ---
> > >  sound/pci/hda/patch_realtek.c |    2 ++
> > >  1 file changed, 2 insertions(+)
> > > 
> > > --- a/sound/pci/hda/patch_realtek.c
> > > +++ b/sound/pci/hda/patch_realtek.c
> > > @@ -13767,6 +13767,8 @@ static int patch_alc861vd(struct hda_cod
> > >  
> > >  	spec->vmaster_nid = 0x02;
> > >  
> > > +	spec->vmaster_nid = 0x02;
> > > +
> > >  	codec->patch_ops = alc_patch_ops;
> > 
> > You seem to have already applied this one earlier ;)
> 
> Heh, good catch, I've now removed this one from the queue.

Well, the patch has to be applied to another place, namely in the
function patch_alc269(), but patch seems confused because the offset
is too big.

As I'm off today, I'm going to check it and resend the patch for
2.6.27 tomorrow.


thanks,

Takashi

Re: [patch 27/28] ALSA: hda - Add missing vmaster initialization for ALC269

[Greg KH]

On Fri, Aug 14, 2009 at 08:56:28AM +0200, Takashi Iwai wrote:
> At Thu, 13 Aug 2009 13:12:22 -0700,
> Greg KH wrote:
> > 
> > On Thu, Aug 13, 2009 at 12:59:05PM -0700, Linus Torvalds wrote:
> > > 
> > > 
> > > On Thu, 13 Aug 2009, Greg KH wrote:
> > > > 
> > > > From: Takashi Iwai <tiwai@suse.de>
> > > > 
> > > > commit 100d5eb36ba20dc0b99a17ea2b9800c567bfc3d1 upstream.
> > > > 
> > > > Without the initialization of vmaster NID, the dB information got
> > > > confused for ALC269 codec.
> > > > 
> > > > Reference: Novell bnc#527361
> > > > 	https://bugzilla.novell.com/show_bug.cgi?id=527361
> > > > 
> > > > Signed-off-by: Takashi Iwai <tiwai@suse.de>
> > > > Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
> > > > 
> > > > ---
> > > >  sound/pci/hda/patch_realtek.c |    2 ++
> > > >  1 file changed, 2 insertions(+)
> > > > 
> > > > --- a/sound/pci/hda/patch_realtek.c
> > > > +++ b/sound/pci/hda/patch_realtek.c
> > > > @@ -13767,6 +13767,8 @@ static int patch_alc861vd(struct hda_cod
> > > >  
> > > >  	spec->vmaster_nid = 0x02;
> > > >  
> > > > +	spec->vmaster_nid = 0x02;
> > > > +
> > > >  	codec->patch_ops = alc_patch_ops;
> > > 
> > > You seem to have already applied this one earlier ;)
> > 
> > Heh, good catch, I've now removed this one from the queue.
> 
> Well, the patch has to be applied to another place, namely in the
> function patch_alc269(), but patch seems confused because the offset
> is too big.
> 
> As I'm off today, I'm going to check it and resend the patch for
> 2.6.27 tomorrow.

Thanks, that would be great.

greg k-h

[patch 28/28] NFS: Fix an O_DIRECT Oops...

[Greg KH]

[-- Attachment #1: nfs-fix-an-o_direct-oops.patch --]
[-- Type: text/plain, Size: 6979 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Trond Myklebust <Trond.Myklebust@netapp.com>

commit 1ae88b2e446261c038f2c0c3150ffae142b227a2 upstream.

We can't call nfs_readdata_release()/nfs_writedata_release() without
first initialising and referencing args.context. Doing so inside
nfs_direct_read_schedule_segment()/nfs_direct_write_schedule_segment()
causes an Oops.

We should rather be calling nfs_readdata_free()/nfs_writedata_free() in
those cases.

Looking at the O_DIRECT code, the "struct nfs_direct_req" is already
referencing the nfs_open_context for us. Since the readdata and writedata
structures carry a reference to that, we can simplify things by getting rid
of the extra nfs_open_context references, so that we can replace all
instances of nfs_readdata_release()/nfs_writedata_release().

Reported-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 fs/nfs/direct.c        |   20 ++++++++++----------
 fs/nfs/read.c          |    6 ++----
 fs/nfs/write.c         |    6 ++----
 include/linux/nfs_fs.h |    5 ++---
 4 files changed, 16 insertions(+), 21 deletions(-)

--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -255,7 +255,7 @@ static void nfs_direct_read_release(void
 
 	if (put_dreq(dreq))
 		nfs_direct_complete(dreq);
-	nfs_readdata_release(calldata);
+	nfs_readdata_free(data);
 }
 
 static const struct rpc_call_ops nfs_read_direct_ops = {
@@ -311,14 +311,14 @@ static ssize_t nfs_direct_read_schedule_
 					data->npages, 1, 0, data->pagevec, NULL);
 		up_read(&current->mm->mmap_sem);
 		if (result < 0) {
-			nfs_readdata_release(data);
+			nfs_readdata_free(data);
 			break;
 		}
 		if ((unsigned)result < data->npages) {
 			bytes = result * PAGE_SIZE;
 			if (bytes <= pgbase) {
 				nfs_direct_release_pages(data->pagevec, result);
-				nfs_readdata_release(data);
+				nfs_readdata_free(data);
 				break;
 			}
 			bytes -= pgbase;
@@ -331,7 +331,7 @@ static ssize_t nfs_direct_read_schedule_
 		data->inode = inode;
 		data->cred = msg.rpc_cred;
 		data->args.fh = NFS_FH(inode);
-		data->args.context = get_nfs_open_context(ctx);
+		data->args.context = ctx;
 		data->args.offset = pos;
 		data->args.pgbase = pgbase;
 		data->args.pages = data->pagevec;
@@ -438,7 +438,7 @@ static void nfs_direct_free_writedata(st
 		struct nfs_write_data *data = list_entry(dreq->rewrite_list.next, struct nfs_write_data, pages);
 		list_del(&data->pages);
 		nfs_direct_release_pages(data->pagevec, data->npages);
-		nfs_writedata_release(data);
+		nfs_writedata_free(data);
 	}
 }
 
@@ -531,7 +531,7 @@ static void nfs_direct_commit_release(vo
 
 	dprintk("NFS: %5u commit returned %d\n", data->task.tk_pid, status);
 	nfs_direct_write_complete(dreq, data->inode);
-	nfs_commitdata_release(calldata);
+	nfs_commit_free(data);
 }
 
 static const struct rpc_call_ops nfs_commit_direct_ops = {
@@ -564,7 +564,7 @@ static void nfs_direct_commit_schedule(s
 	data->args.fh = NFS_FH(data->inode);
 	data->args.offset = 0;
 	data->args.count = 0;
-	data->args.context = get_nfs_open_context(dreq->ctx);
+	data->args.context = dreq->ctx;
 	data->res.count = 0;
 	data->res.fattr = &data->fattr;
 	data->res.verf = &data->verf;
@@ -725,14 +725,14 @@ static ssize_t nfs_direct_write_schedule
 					data->npages, 0, 0, data->pagevec, NULL);
 		up_read(&current->mm->mmap_sem);
 		if (result < 0) {
-			nfs_writedata_release(data);
+			nfs_writedata_free(data);
 			break;
 		}
 		if ((unsigned)result < data->npages) {
 			bytes = result * PAGE_SIZE;
 			if (bytes <= pgbase) {
 				nfs_direct_release_pages(data->pagevec, result);
-				nfs_writedata_release(data);
+				nfs_writedata_free(data);
 				break;
 			}
 			bytes -= pgbase;
@@ -747,7 +747,7 @@ static ssize_t nfs_direct_write_schedule
 		data->inode = inode;
 		data->cred = msg.rpc_cred;
 		data->args.fh = NFS_FH(inode);
-		data->args.context = get_nfs_open_context(ctx);
+		data->args.context = ctx;
 		data->args.offset = pos;
 		data->args.pgbase = pgbase;
 		data->args.pages = data->pagevec;
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -58,17 +58,15 @@ struct nfs_read_data *nfs_readdata_alloc
 	return p;
 }
 
-static void nfs_readdata_free(struct nfs_read_data *p)
+void nfs_readdata_free(struct nfs_read_data *p)
 {
 	if (p && (p->pagevec != &p->page_array[0]))
 		kfree(p->pagevec);
 	mempool_free(p, nfs_rdata_mempool);
 }
 
-void nfs_readdata_release(void *data)
+static void nfs_readdata_release(struct nfs_read_data *rdata)
 {
-	struct nfs_read_data *rdata = data;
-
 	put_nfs_open_context(rdata->args.context);
 	nfs_readdata_free(rdata);
 }
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -84,17 +84,15 @@ struct nfs_write_data *nfs_writedata_all
 	return p;
 }
 
-static void nfs_writedata_free(struct nfs_write_data *p)
+void nfs_writedata_free(struct nfs_write_data *p)
 {
 	if (p && (p->pagevec != &p->page_array[0]))
 		kfree(p->pagevec);
 	mempool_free(p, nfs_wdata_mempool);
 }
 
-void nfs_writedata_release(void *data)
+static void nfs_writedata_release(struct nfs_write_data *wdata)
 {
-	struct nfs_write_data *wdata = data;
-
 	put_nfs_open_context(wdata->args.context);
 	nfs_writedata_free(wdata);
 }
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -461,7 +461,6 @@ extern int  nfs_writepages(struct addres
 extern int  nfs_flush_incompatible(struct file *file, struct page *page);
 extern int  nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int);
 extern int nfs_writeback_done(struct rpc_task *, struct nfs_write_data *);
-extern void nfs_writedata_release(void *);
 
 /*
  * Try to write back everything synchronously (but check the
@@ -476,7 +475,6 @@ extern int nfs_wb_page_cancel(struct ino
 extern int  nfs_commit_inode(struct inode *, int);
 extern struct nfs_write_data *nfs_commitdata_alloc(void);
 extern void nfs_commit_free(struct nfs_write_data *wdata);
-extern void nfs_commitdata_release(void *wdata);
 #else
 static inline int
 nfs_commit_inode(struct inode *inode, int how)
@@ -495,6 +493,7 @@ nfs_have_writebacks(struct inode *inode)
  * Allocate nfs_write_data structures
  */
 extern struct nfs_write_data *nfs_writedata_alloc(unsigned int npages);
+extern void nfs_writedata_free(struct nfs_write_data *);
 
 /*
  * linux/fs/nfs/read.c
@@ -503,12 +502,12 @@ extern int  nfs_readpage(struct file *, 
 extern int  nfs_readpages(struct file *, struct address_space *,
 		struct list_head *, unsigned);
 extern int  nfs_readpage_result(struct rpc_task *, struct nfs_read_data *);
-extern void nfs_readdata_release(void *data);
 
 /*
  * Allocate nfs_read_data structures
  */
 extern struct nfs_read_data *nfs_readdata_alloc(unsigned int npages);
+extern void nfs_readdata_free(struct nfs_read_data *);
 
 /*
  * linux/fs/nfs3proc.c