Linus Torvalds [Sat, 9 Oct 2010 19:06:26 +0000 (12:06 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (27 commits)
net: clear heap allocation for ETHTOOL_GRXCLSRLALL
isdn: strcpy() => strlcpy()
Revert "mac80211: use netif_receive_skb in ieee80211_tx_status callpath"
mac80211: delete AddBA response timer
ath9k_hw: fix regression in ANI listen time calculation
caif: fix two caif_connect() bugs
bonding: fix WARN_ON when writing to bond_master sysfs file
skge: add quirk to limit DMA
MAINTAINERS: update Intel LAN Ethernet info
e1000e.txt: Add e1000e documentation
e1000.txt: Update e1000 documentation
ixgbevf.txt: Update ixgbevf documentation
cls_u32: signedness bug
Bluetooth: Disallow to change L2CAP_OPTIONS values when connected
sctp: Fix out-of-bounds reading in sctp_asoc_get_hmac()
sctp: prevent reading out-of-bounds memory
ipv4: correct IGMP behavior on v3 query during v2-compatibility mode
netdev: Depend on INET before selecting INET_LRO
Revert "ipv4: Make INET_LRO a bool instead of tristate."
net: Fix the condition passed to sk_wait_event()
...
Linus Torvalds [Sat, 9 Oct 2010 19:05:09 +0000 (12:05 -0700)]
Merge branch 'idle-release' of git://git./linux/kernel/git/lenb/linux-idle-2.6
* 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6:
intel_idle: enable Atom C6
Linus Torvalds [Sat, 9 Oct 2010 19:04:38 +0000 (12:04 -0700)]
Merge branch 'release' of git://git./linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
ACPI: add DMI to disable AML Vista compatibility on MSI GX723 Notebook
ACPI: Handle ACPI0007 Device in acpi_early_set_pdc
Linus Torvalds [Sat, 9 Oct 2010 19:03:46 +0000 (12:03 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
ceph: update issue_seq on cap grant
ceph: send cap release message early on failed revoke.
ceph: Update max_len with minimum required size
ceph: Fix return value of encode_fh function
ceph: avoid null deref in osd request error path
ceph: fix list_add usage on unsafe_writes list
Linus Torvalds [Sat, 9 Oct 2010 19:03:23 +0000 (12:03 -0700)]
Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd
* 'for-linus' of git://git.open-osd.org/linux-open-osd:
exofs: Fix double page_unlock BUG in write_begin/end
Linus Torvalds [Sat, 9 Oct 2010 18:43:40 +0000 (11:43 -0700)]
Merge branch 'drm-intel-fixes' of git://git./linux/kernel/git/ickle/drm-intel
* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel:
drm/i915: Prevent module unload to avoid random memory corruption
Linus Torvalds [Sat, 9 Oct 2010 18:43:18 +0000 (11:43 -0700)]
Merge branch 's5p-fixes-for-linus' of git://git./linux/kernel/git/kgene/linux-samsung
* 's5p-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: SAMSUNG: Add a workaround for get_clock() for serial driver
ARM: S5P: Bug fix on errors of build with CONFIG_PREEMPT_NONE
ARM: SAMSUNG: Fix build warnings because of unused codes
Andi Kleen [Fri, 8 Oct 2010 18:36:15 +0000 (20:36 +0200)]
Define _addr_lsb in siginfo_t for mips
Define an _addr_lsb field in the mips and ia64 siginfo_ts, following
the asm-generic version. This just puts the field over padding.
This fixes a compilation problem introduced with
a337fda.
Cc: ralf@linux-mips.org
Cc: tony.luck@intel.com
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mike Snitzer [Sat, 9 Oct 2010 01:42:13 +0000 (12:12 +1030)]
virtio-blk: fix request leak.
Must drop reference taken by blk_make_request().
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: stable@kernel.org # .35.x
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Len Brown [Sat, 9 Oct 2010 02:37:46 +0000 (22:37 -0400)]
Merge branch 'msi-dmi' into release
Len Brown [Sat, 9 Oct 2010 02:35:02 +0000 (22:35 -0400)]
Merge branch 'pdc-regression' into release
Len Brown [Tue, 5 Oct 2010 17:43:14 +0000 (13:43 -0400)]
intel_idle: enable Atom C6
ATM-C6 was commented out, pending public documentation.
https://bugzilla.kernel.org/show_bug.cgi?id=19762
Tested-by: Dennis Jansen <Dennis.Jansen@...>
Signed-off-by: Len Brown <len.brown@intel.com>
Kees Cook [Thu, 7 Oct 2010 10:03:48 +0000 (10:03 +0000)]
net: clear heap allocation for ETHTOOL_GRXCLSRLALL
Calling ETHTOOL_GRXCLSRLALL with a large rule_cnt will allocate kernel
heap without clearing it. For the one driver (niu) that implements it,
it will leave the unused portion of heap unchanged and copy the full
contents back to userspace.
Signed-off-by: Kees Cook <kees.cook@canonical.com>
Acked-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 8 Oct 2010 17:36:51 +0000 (10:36 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6
Dan Carpenter [Fri, 8 Oct 2010 17:21:22 +0000 (10:21 -0700)]
isdn: strcpy() => strlcpy()
setup.phone and setup.eazmsn are 32 character buffers.
rcvmsg.msg_data.byte_array is a 48 character buffer.
sc_adapter[card]->channel[rcvmsg.phy_link_no - 1].dn is 50 chars.
The rcvmsg struct comes from the memcpy_fromio() in receivemessage().
I guess that means it's data off the wire. I'm not very familiar with
this code but I don't see any reason to assume these strings are NULL
terminated.
Also it's weird that "dn" in a 50 character buffer but we only seem to
use 32 characters. In drivers/isdn/sc/scioc.h, "dn" is only a 49
character buffer. So potentially there is still an issue there.
The important thing for now is to prevent the memory corruption.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Boaz Harrosh [Thu, 7 Oct 2010 17:37:51 +0000 (13:37 -0400)]
exofs: Fix double page_unlock BUG in write_begin/end
This BUG is there since the first submit of the code, but only triggered
in last Kernel. It's timing related do to the asynchronous object-creation
behaviour of exofs. (Which should be investigated farther)
The bug is obvious hence the fixed.
Signed-off-by: Boaz Harrosh <Boaz Harrosh bharrosh@panasas.com>
Chris Wilson [Fri, 8 Oct 2010 12:40:27 +0000 (13:40 +0100)]
drm/i915: Prevent module unload to avoid random memory corruption
The i915 driver has quite a few module unload bugs, the known ones at
least have fixes that are targeting 2.6.37. However, in order to
maintain a stable kernel, we should prevent this known random memory
corruption following driver unload. This should have very low impact on
normal users who are unlikely to need to unload the i915 driver.
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@kernel.org
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Marek Szyprowski [Thu, 7 Oct 2010 08:19:10 +0000 (17:19 +0900)]
ARM: SAMSUNG: Add a workaround for get_clock() for serial driver
Serial drivers call get_clock() very early, before platform bus
has been set up, this requires a special check to let them get
a proper clock. Without this patch, a serial console is broken
on S5PV310 and S5PC210 boards.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[kgene.kim@samsung.com: fix coding-style]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
SeungChull Suh [Sat, 2 Oct 2010 03:48:12 +0000 (12:48 +0900)]
ARM: S5P: Bug fix on errors of build with CONFIG_PREEMPT_NONE
This patch adds header <linux/sched.h> into the below files for build with
CONFIG_PREEMPT_NONE.
arch/arm/mach-s5p6440/cpu.c
arch/arm/mach-s5p6442/cpu.c
arch/arm/mach-s5pc100/cpu.c
arch/arm/mach-s5pv210/cpu.c
Following is error message of in case of s5pv210_defconfig with CONFIG_PREEMPT_NONE.
arch/arm/mach-s5pv210/cpu.c:91: error: implicit declaration of function 'need_resched'
Signed-off-by: SeungChull Suh <sc.suh@samsung.com>
[kgene.kim@samsung.com: removed mach-s5p64x0/cpu.c]
[kgene.kim@samsung.com: added fix mach-s5p6440/cpu.c]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Kukjin Kim [Wed, 8 Sep 2010 23:56:15 +0000 (08:56 +0900)]
ARM: SAMSUNG: Fix build warnings because of unused codes
This patch removes following unused codes for removing build warnings.
arch/arm/plat-samsung/adc.c:438: warning: unused variable 'flags'
arch/arm/mach-s5pv210/clock.c:176: warning: 's5pv210_clk_ip4_ctrl' defined but not used
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Linus Torvalds [Thu, 7 Oct 2010 20:59:32 +0000 (13:59 -0700)]
Merge branch 'hwpoison-fixes' of git://git./linux/kernel/git/ak/linux-mce-2.6
* 'hwpoison-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6:
HWPOISON: Stop shrinking at right page count
HWPOISON: Report correct address granuality for AO huge page errors
HWPOISON: Copy si_addr_lsb to user
page-types.c: fix name of unpoison interface
Linus Torvalds [Thu, 7 Oct 2010 20:54:56 +0000 (13:54 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
elevator: fix oops on early call to elevator_change()
Linus Torvalds [Thu, 7 Oct 2010 20:50:48 +0000 (13:50 -0700)]
Merge branch 'for-linus' of git://neil.brown.name/md
* 'for-linus' of git://neil.brown.name/md:
md: check return code of read_sb_page
md/raid1: minor bio initialisation improvements.
md/raid1: avoid overflow in raid1 resync when bitmap is in use.
Linus Torvalds [Thu, 7 Oct 2010 20:47:20 +0000 (13:47 -0700)]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm: don't drop handle reference on unload
drm/ttm: Fix two race conditions + fix busy codepaths
Linus Torvalds [Thu, 7 Oct 2010 20:46:33 +0000 (13:46 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: wacom - fix runtime PM related deadlock
Input: joydev - fix JSIOCSAXMAP ioctl
Input: uinput - setup MT usage during device creation
Linus Torvalds [Thu, 7 Oct 2010 20:45:26 +0000 (13:45 -0700)]
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
* 'for-linus' of git://oss.sgi.com/xfs/xfs:
xfs: properly account for reclaimed inodes
Linus Torvalds [Thu, 7 Oct 2010 20:45:00 +0000 (13:45 -0700)]
Merge branch 'v4l_for_linus' of git://git./linux/kernel/git/mchehab/linux-2.6
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (37 commits)
V4L/DVB: v4l: radio: si470x: fix unneeded free_irq() call
V4L/DVB: v4l: videobuf: prevent passing a NULL to dma_free_coherent()
V4L/DVB: ir-core: Fix null dereferences in the protocols sysfs interface
V4L/DVB: v4l: s5p-fimc: Fix 3-planar formats handling and pixel offset error on S5PV210 SoCs
V4L/DVB: v4l: s5p-fimc: Fix return value on probe() failure
V4L/DVB: uvcvideo: Restrict frame rates for Chicony CNF7129 webcam
V4L/DVB: uvcvideo: Fix support for Medion Akoya All-in-one PC integrated webcam
V4L/DVB: ivtvfb: prevent reading uninitialized stack memory
V4L/DVB: cx25840: Fix typo in volume control initialization: 65335 vs. 65535
V4L/DVB: v4l: mem2mem_testdev: add missing release for video_device
V4L/DVB: v4l: mem2mem_testdev: fix errorenous comparison
V4L/DVB: mt9v022.c: Fixed compilation warning
V4L/DVB: mt9m111: added current colorspace at g_fmt
V4L/DVB: mt9m111: cropcap and s_crop check if type is VIDEO_CAPTURE
V4L/DVB: mx2_camera: fix a race causing NULL dereference
V4L/DVB: tm6000: bugfix data handling
V4L/DVB: gspca - sn9c20x: Bad transfer size of Bayer images
V4L/DVB: videobuf-dma-sg: set correct size in last sg element
V4L/DVB: cx231xx: Avoid an OOPS when card is unknown (card=0)
V4L/DVB: dvb: fix smscore_getbuffer() logic
...
Linus Torvalds [Thu, 7 Oct 2010 20:44:30 +0000 (13:44 -0700)]
Merge branch 'i2c-for-linus' of git://git./linux/kernel/git/jdelvare/staging
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
of/i2c: Fix module load order issue caused by of_i2c.c
i2c: Fix checks which cause legacy suspend to never get called
i2c-pca: Fix waitforcompletion() return value
i2c: Fix for suspend/resume issue
i2c: Remove obsolete cleanup for clientdata
Eric Dumazet [Thu, 7 Oct 2010 19:59:29 +0000 (12:59 -0700)]
sysctl: fix min/max handling in __do_proc_doulongvec_minmax()
When proc_doulongvec_minmax() is used with an array of longs, and no
min/max check requested (.extra1 or .extra2 being NULL), we dereference a
NULL pointer for the second element of the array.
Noticed while doing some changes in network stack for the "16TB problem"
Fix is to not change min & max pointers in __do_proc_doulongvec_minmax(),
so that all elements of the vector share an unique min/max limit, like
proc_dointvec_minmax().
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Americo Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kyungmin Park [Thu, 7 Oct 2010 19:59:28 +0000 (12:59 -0700)]
MAINTAINERS: add Samsung S5P series FIMC maintainers
Add Samsung S5P series FIMC(Camera Interface) maintainers.
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew Morton [Thu, 7 Oct 2010 19:59:28 +0000 (12:59 -0700)]
MAINTAINERS: Haavard has moved
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kirill A. Shutemov [Thu, 7 Oct 2010 19:59:27 +0000 (12:59 -0700)]
memcg: fix thresholds with use_hierarchy == 1
We need to check parent's thresholds if parent has use_hierarchy == 1 to
be sure that parent's threshold events will be triggered even if parent
itself is not active (no MEM_CGROUP_EVENTS).
Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Robin Holt [Thu, 7 Oct 2010 19:59:26 +0000 (12:59 -0700)]
mm: alloc_large_system_hash() printk overflow on 16TB boot
During boot of a 16TB system, the following is printed:
Dentry cache hash table entries: -
2147483648 (order: 22,
17179869184 bytes)
Signed-off-by: Robin Holt <holt@sgi.com>
Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
John W. Linville [Thu, 7 Oct 2010 15:35:40 +0000 (11:35 -0400)]
Revert "mac80211: use netif_receive_skb in ieee80211_tx_status callpath"
This reverts commit
5ed3bc7288487bd4f891f420a07319e0b538b4fe.
It turns-out that not all drivers are calling ieee80211_tx_status from a
compatible context. Revert this for now and try again later...
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Sage Weil [Wed, 22 Sep 2010 18:16:00 +0000 (11:16 -0700)]
ceph: update issue_seq on cap grant
We need to update the issue_seq on any grant operation, be it via an MDS
reply or a separate grant message. The update in the grant path was
missing. This broke cap release for inodes in which the MDS sent an
explicit grant message that was not soon after followed by a successful
MDS reply on the same inode.
Also fix the signedness on seq locals.
Signed-off-by: Sage Weil <sage@newdream.net>
Greg Farnum [Wed, 6 Oct 2010 22:46:30 +0000 (15:46 -0700)]
ceph: send cap release message early on failed revoke.
If an MDS tries to revoke caps that we don't have, we want to send
releases early since they probably contain the caps message the MDS
is looking for.
Previously, we only sent the messages if we didn't have the inode either. But
in a multi-mds system we can retain the inode after dropping all caps for
a single MDS.
Signed-off-by: Greg Farnum <gregf@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
Aneesh Kumar K.V [Tue, 5 Oct 2010 10:33:42 +0000 (16:03 +0530)]
ceph: Update max_len with minimum required size
encode_fh on error should update max_len with minimum required
size, so that caller can redo the call with the reallocated buffer.
This is required with open by handle patch series
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Sage Weil <sage@newdream.net>
Aneesh Kumar K.V [Tue, 5 Oct 2010 10:33:41 +0000 (16:03 +0530)]
ceph: Fix return value of encode_fh function
encode_fh function should return 255 on error as done by other file
system to indicate EOVERFLOW. Also max_len is in sizeof(u32) units
and not in bytes.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Sage Weil <sage@newdream.net>
Sage Weil [Mon, 27 Sep 2010 17:18:52 +0000 (10:18 -0700)]
ceph: avoid null deref in osd request error path
If we interrupt an osd request, we call __cancel_request, but it wasn't
verifying that req->r_osd was non-NULL before dereferencing it. This could
cause a crash if osds were flapping and we aborted a request on said osd.
Reported-by: Henry C Chang <henry_c_chang@tcloudcomputing.com>
Signed-off-by: Sage Weil <sage@newdream.net>
Henry C Chang [Thu, 23 Sep 2010 03:21:17 +0000 (20:21 -0700)]
ceph: fix list_add usage on unsafe_writes list
Fix argument order.
Signed-off-by: Henry C Chang <henry_c_chang@tcloudcomputing.com>
Signed-off-by: Sage Weil <sage@newdream.net>
David S. Miller [Thu, 7 Oct 2010 07:59:39 +0000 (00:59 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/padovan/bluetooth-2.6
Andi Kleen [Tue, 28 Sep 2010 05:37:55 +0000 (07:37 +0200)]
HWPOISON: Stop shrinking at right page count
When we call the slab shrinker to free a page we need to stop at
page count one because the caller always holds a single reference, not zero.
This avoids useless looping over slab shrinkers and freeing too much
memory.
Reviewed-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Andi Kleen [Mon, 27 Sep 2010 20:03:33 +0000 (22:03 +0200)]
HWPOISON: Report correct address granuality for AO huge page errors
The SIGBUS user space signalling is supposed to report the
address granuality of a corruption. Pass this information correctly
for huge pages by querying the hpage order.
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Andi Kleen [Mon, 27 Sep 2010 18:32:19 +0000 (20:32 +0200)]
HWPOISON: Copy si_addr_lsb to user
The original hwpoison code added a new siginfo field si_addr_lsb to
pass the granuality of the fault address to user space. Unfortunately
this field was never copied to user space. Fix this here.
I added explicit checks for the MCEERR codes to avoid having
to patch all potential callers to initialize the field.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Naoya Horiguchi [Wed, 8 Sep 2010 01:19:41 +0000 (10:19 +0900)]
page-types.c: fix name of unpoison interface
The page-types utility still uses an out of date name for the
unpoison interface: debugfs:hwpoison/renew-pfn
This patch renames and fixes it.
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Jens Axboe [Thu, 7 Oct 2010 07:35:16 +0000 (09:35 +0200)]
elevator: fix oops on early call to elevator_change()
2.6.36 introduces an API for drivers to switch the IO scheduler
instead of manually calling the elevator exit and init functions.
This API was added since q->elevator must be cleared in between
those two calls. And since we already have this functionality
directly from use by the sysfs interface to switch schedulers
online, it was prudent to reuse it internally too.
But this API needs the queue to be in a fully initialized state
before it is called, or it will attempt to unregister elevator
kobjects before they have been added. This results in an oops
like this:
BUG: unable to handle kernel NULL pointer dereference at
0000000000000051
IP: [<
ffffffff8116f15e>] sysfs_create_dir+0x2e/0xc0
PGD
47ddfc067 PUD
47c6a1067 PMD 0
Oops: 0000 [#1] PREEMPT SMP
last sysfs file: /sys/devices/pci0000:00/0000:00:02.0/0000:04:00.1/irq
CPU 2
Modules linked in: t(+) loop hid_apple usbhid ahci ehci_hcd uhci_hcd libahci usbcore nls_base igb
Pid: 7319, comm: modprobe Not tainted 2.6.36-rc6+ #132 QSSC-S4R/QSSC-S4R
RIP: 0010:[<
ffffffff8116f15e>] [<
ffffffff8116f15e>] sysfs_create_dir+0x2e/0xc0
RSP: 0018:
ffff88027da25d08 EFLAGS:
00010246
RAX:
ffff88047c68c528 RBX:
00000000fffffffe RCX:
0000000000000000
RDX:
000000000000002f RSI:
000000000000002f RDI:
ffff88047e196c88
RBP:
ffff88027da25d38 R08:
0000000000000000 R09:
d84156c5635688c0
R10:
d84156c5635688c0 R11:
0000000000000000 R12:
ffff88047e196c88
R13:
0000000000000000 R14:
0000000000000000 R15:
ffff88047c68c528
FS:
00007fcb0b26f6e0(0000) GS:
ffff880287400000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
000000008005003b
CR2:
0000000000000051 CR3:
000000047e76e000 CR4:
00000000000006e0
DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
DR3:
0000000000000000 DR6:
00000000ffff0ff0 DR7:
0000000000000400
Process modprobe (pid: 7319, threadinfo
ffff88027da24000, task
ffff88027d377090)
Stack:
ffff88027da25d58 ffff88047c68c528 00000000fffffffe ffff88047e196c88
<0>
ffff88047c68c528 ffff88047e05bd90 ffff88027da25d78 ffffffff8123fb77
<0>
ffff88047e05bd90 0000000000000000 ffff88047e196c88 ffff88047c68c528
Call Trace:
[<
ffffffff8123fb77>] kobject_add_internal+0xe7/0x1f0
[<
ffffffff8123fd98>] kobject_add_varg+0x38/0x60
[<
ffffffff8123feb9>] kobject_add+0x69/0x90
[<
ffffffff8116efe0>] ? sysfs_remove_dir+0x20/0xa0
[<
ffffffff8103d48d>] ? sub_preempt_count+0x9d/0xe0
[<
ffffffff8143de20>] ? _raw_spin_unlock+0x30/0x50
[<
ffffffff8116efe0>] ? sysfs_remove_dir+0x20/0xa0
[<
ffffffff8116eff4>] ? sysfs_remove_dir+0x34/0xa0
[<
ffffffff81224204>] elv_register_queue+0x34/0xa0
[<
ffffffff81224aad>] elevator_change+0xfd/0x250
[<
ffffffffa007e000>] ? t_init+0x0/0x361 [t]
[<
ffffffffa007e000>] ? t_init+0x0/0x361 [t]
[<
ffffffffa007e0a8>] t_init+0xa8/0x361 [t]
[<
ffffffff810001de>] do_one_initcall+0x3e/0x170
[<
ffffffff8108c3fd>] sys_init_module+0xbd/0x220
[<
ffffffff81002f2b>] system_call_fastpath+0x16/0x1b
Code: e5 41 56 41 55 41 54 49 89 fc 53 48 83 ec 10 48 85 ff 74 52 48 8b 47 18 49 c7 c5 00 46 61 81 48 85 c0 74 04 4c 8b 68 30 45 31 f6 <41> 80 7d 51 00 74 0e 49 8b 44 24 28 4c 89 e7 ff 50 20 49 89 c6
RIP [<
ffffffff8116f15e>] sysfs_create_dir+0x2e/0xc0
RSP <
ffff88027da25d08>
CR2:
0000000000000051
---[ end trace
a6541d3bf07945df ]---
Fix this by adding a registered bit to the elevator queue, which is
set when the sysfs kobjects have been registered.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Dave Airlie [Thu, 7 Oct 2010 04:01:17 +0000 (14:01 +1000)]
drm: don't drop handle reference on unload
since the handle references are all tied to a file_priv, and when it disappears
all the handle refs go with it.
The fbcon ones we'd only notice on unload, but the nouveau notifier one
would would happen on reboot.
nouveau: Reported-by: Marc Dionne <marc.c.dionne@gmail.com>
nouveau: Tested-by: Marc Dionne <marc.c.dionne@gmail.com>
i915 unload: Reported-by: Keith Packard <keithp@keithp.com>
Acked-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Johannes Weiner [Fri, 1 Oct 2010 07:43:54 +0000 (07:43 +0000)]
xfs: properly account for reclaimed inodes
When marking an inode reclaimable, a per-AG counter is increased, the
inode is tagged reclaimable in its per-AG tree, and, when this is the
first reclaimable inode in the AG, the AG entry in the per-mount tree
is also tagged.
When an inode is finally reclaimed, however, it is only deleted from
the per-AG tree. Neither the counter is decreased, nor is the parent
tree's AG entry untagged properly.
Since the tags in the per-mount tree are not cleared, the inode
shrinker iterates over all AGs that have had reclaimable inodes at one
point in time.
The counters on the other hand signal an increasing amount of slab
objects to reclaim. Since "
70e60ce xfs: convert inode shrinker to
per-filesystem context" this is not a real issue anymore because the
shrinker bails out after one iteration.
But the problem was observable on a machine running v2.6.34, where the
reclaimable work increased and each process going into direct reclaim
eventually got stuck on the xfs inode shrinking path, trying to scan
several million objects.
Fix this by properly unwinding the reclaimable-state tracking of an
inode when it is reclaimed.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: stable@kernel.org
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
David S. Miller [Thu, 7 Oct 2010 02:11:17 +0000 (19:11 -0700)]
Merge branch 'master' of /linux/kernel/git/torvalds/linux-2.6
Vasiliy Kulikov [Fri, 1 Oct 2010 21:18:12 +0000 (14:18 -0700)]
md: check return code of read_sb_page
Function read_sb_page may return ERR_PTR(...). Check for it.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 7 Oct 2010 01:00:50 +0000 (12:00 +1100)]
md/raid1: minor bio initialisation improvements.
When performing a resync we pre-allocate some bios and repeatedly use
them. This requires us to re-initialise them each time.
One field (bi_comp_cpu) and some flags weren't being initiaised
reliably.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 7 Oct 2010 00:54:46 +0000 (11:54 +1100)]
md/raid1: avoid overflow in raid1 resync when bitmap is in use.
bitmap_start_sync returns - via a pass-by-reference variable - the
number of sectors before we need to check with the bitmap again.
Since commit
ef4256733506f245 this number can be substantially larger,
2^27 is a common value.
Unfortunately it is an 'int' and so when raid1.c:sync_request shifts
it 9 places to the left it becomes 0. This results in a zero-length
read which the scsi layer justifiably complains about.
This patch just removes the shift so the common case becomes safe with
a trivially-correct patch.
In the next merge window we will convert this 'int' to a 'sector_t'
Reported-by: "George Spelvin" <linux@horizon.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Linus Torvalds [Wed, 6 Oct 2010 20:39:52 +0000 (13:39 -0700)]
Linux 2.6.36-rc7
Linus Torvalds [Wed, 6 Oct 2010 20:27:19 +0000 (13:27 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/upstream-linus
* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus:
MIPS: Octeon: Place cnmips_cu2_setup in __init memory.
MIPS: Don't place cu2 notifiers in __cpuinitdata
MIPS: Calculate VMLINUZ_LOAD_ADDRESS based on the length of vmlinux.bin
MIPS: Alchemy: Resolve prom section mismatches
MIPS: Fix syscall 64 bit number comments.
MIPS: Hookup fanotify_init, fanotify_mark, and prlimit64 syscalls.
MIPS: TX49xx: Rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGN
MIPS: N32: Fix getdents64 syscall for n32
MIPS: Remove pr_<level> uses of KERN_<level>
MIPS: PNX8550: Sort out machine halt, restart and powerdown functions.
MIPS: GIC: Remove dependencies from Malta files.
MIPS: Kconfig: Fix and clarify kconfig help text for VSMP and SMTC.
MIPS: DMA: Fix computation of DMA flags from device's coherent_dma_mask.
MIPS: Audit: Fix hang in entry.S.
MIPS: Document why RELOC_HIDE is there.
MIPS: Octeon: Determine if helper needs to be built
MIPS: Use generic atomic64 for 32-bit kernels
MIPS: RM7000: Symbol should be static
MIPS: kspd: Adjust confusing if indentation
MIPS: Fix a typo.
Johannes Berg [Tue, 5 Oct 2010 19:40:33 +0000 (21:40 +0200)]
mac80211: delete AddBA response timer
We never delete the addBA response timer, which
is typically fine, but if the station it belongs
to is deleted very quickly after starting the BA
session, before the peer had a chance to reply,
the timer may fire after the station struct has
been freed already. Therefore, we need to delete
the timer in a suitable spot -- best when the
session is being stopped (which will happen even
then) in which case the delete will be a no-op
most of the time.
I've reproduced the scenario and tested the fix.
This fixes the crash reported at
http://mid.gmane.org/
4CAB6F96.
6090701@candelatech.com
Cc: stable@kernel.org
Reported-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Felix Fietkau [Sun, 3 Oct 2010 17:07:19 +0000 (19:07 +0200)]
ath9k_hw: fix regression in ANI listen time calculation
wireless-testing
commit
37e5bf6535a4d697fb9fa6f268a8354a612cbc00
Author: Luis R. Rodriguez <lrodriguez@atheros.com>
Date: Sat Jun 12 00:33:40 2010 -0400
ath9k_hw: fix clock rate calculations for ANI
This commit accidentally broke clock rate calculation by doubling the
calculated clock rate
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Linus Torvalds [Wed, 6 Oct 2010 18:11:18 +0000 (11:11 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
writeback: always use sb->s_bdi for writeback purposes
Linus Torvalds [Wed, 6 Oct 2010 16:51:28 +0000 (09:51 -0700)]
Merge branch 'v2.6.36-rc6-urgent-fixes' of git://xenbits.xen.org/people/sstabellini/linux-pvhvm
* 'v2.6.36-rc6-urgent-fixes' of git://xenbits.xen.org/people/sstabellini/linux-pvhvm:
xen: do not initialize PV timers on HVM if !xen_have_vector_callback
xen: do not set xenstored_ready before xenbus_probe on hvm
Linus Torvalds [Wed, 6 Oct 2010 16:50:41 +0000 (09:50 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mszeredi/fuse
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: Initialize total_len in fuse_retrieve()
Eric Dumazet [Mon, 4 Oct 2010 22:42:08 +0000 (22:42 +0000)]
caif: fix two caif_connect() bugs
caif_connect() might dereference a netdevice after dev_put() it.
It also doesnt check dev_get_by_index() return value and could
dereference a NULL pointer.
Fix it, using RCU to avoid taking a reference.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Sjur Braendeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Neil Horman [Tue, 5 Oct 2010 03:39:21 +0000 (03:39 +0000)]
bonding: fix WARN_ON when writing to bond_master sysfs file
Fix a WARN_ON failure in bond_masters sysfs file
Got a report of this warning recently
bonding: bond0 is being created...
------------[ cut here ]------------
WARNING: at fs/proc/generic.c:590 proc_register+0x14d/0x185()
Hardware name: ProLiant BL465c G1
proc_dir_entry 'bonding/bond0' already registered
Modules linked in: bonding ipv6 tg3 bnx2 shpchp amd64_edac_mod edac_core
ipmi_si
ipmi_msghandler serio_raw i2c_piix4 k8temp edac_mce_amd hpwdt microcode hpsa
cc
iss radeon ttm drm_kms_helper drm i2c_algo_bit i2c_core [last unloaded:
scsi_wai
t_scan]
Pid: 935, comm: ifup-eth Not tainted 2.6.33.5-124.fc13.x86_64 #1
Call Trace:
[<
ffffffff8104b54c>] warn_slowpath_common+0x77/0x8f
[<
ffffffff8104b5b1>] warn_slowpath_fmt+0x3c/0x3e
[<
ffffffff8114bf0b>] proc_register+0x14d/0x185
[<
ffffffff8114c20c>] proc_create_data+0x87/0xa1
[<
ffffffffa0211e9b>] bond_create_proc_entry+0x55/0x95 [bonding]
[<
ffffffffa0215e5d>] bond_init+0x95/0xd0 [bonding]
[<
ffffffff8138cd97>] register_netdevice+0xdd/0x29e
[<
ffffffffa021240b>] bond_create+0x8e/0xb8 [bonding]
[<
ffffffffa021c4be>] bonding_store_bonds+0xb3/0x1c1 [bonding]
[<
ffffffff812aec85>] class_attr_store+0x27/0x29
[<
ffffffff8115423d>] sysfs_write_file+0x10f/0x14b
[<
ffffffff81101acf>] vfs_write+0xa9/0x106
[<
ffffffff81101be2>] sys_write+0x45/0x69
[<
ffffffff81009b02>] system_call_fastpath+0x16/0x1b
---[ end trace
a677c3f7f8b16b1e ]---
bonding: Bond creation failed.
It happens because a user space writer to bond_master can try to
register an already existing bond interface name. Fix it by teaching
bond_create to check for the existance of devices with that name first
in cases where a non-NULL name parameter has been passed in
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stephen Rothwell [Wed, 6 Oct 2010 00:06:44 +0000 (11:06 +1100)]
powerpc: remove unused variable
Since powerpc uses -Werror on arch powerpc, the build was broken like
this:
cc1: warnings being treated as errors
arch/powerpc/kernel/module.c: In function 'module_finalize':
arch/powerpc/kernel/module.c:66: error: unused variable 'err'
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas Hellstrom [Thu, 30 Sep 2010 10:36:45 +0000 (12:36 +0200)]
drm/ttm: Fix two race conditions + fix busy codepaths
This fixes a race pointed out by Dave Airlie where we don't take a buffer
object about to be destroyed off the LRU lists properly. It also fixes a rare
case where a buffer object could be destroyed in the middle of an
accelerated eviction.
The patch also adds a utility function that can be used to prematurely
release GPU memory space usage of an object waiting to be destroyed.
For example during eviction or swapout.
The above mentioned commit didn't queue the buffer on the delayed destroy
list under some rare circumstances. It also didn't completely honor the
remove_all parameter.
Fixes:
https://bugzilla.redhat.com/show_bug.cgi?id=615505
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=591061
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Stanislaw Gruszka [Tue, 5 Oct 2010 22:11:40 +0000 (15:11 -0700)]
skge: add quirk to limit DMA
Skge devices installed on some Gigabyte motherboards are not able to
perform 64 dma correctly due to board PCI implementation, so limit
DMA to 32bit if such boards are detected.
Bug was reported here:
https://bugzilla.redhat.com/show_bug.cgi?id=447489
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Tested-by: Luya Tshimbalanga <luya@fedoraproject.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jeff Kirsher [Tue, 5 Oct 2010 01:15:17 +0000 (01:15 +0000)]
MAINTAINERS: update Intel LAN Ethernet info
- Add ixgbevf and docs files to the maintainers file
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jeff Kirsher [Tue, 5 Oct 2010 01:17:27 +0000 (01:17 +0000)]
e1000e.txt: Add e1000e documentation
Adds documentation for the e1000e networking driver.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jeff Kirsher [Tue, 5 Oct 2010 01:17:05 +0000 (01:17 +0000)]
e1000.txt: Update e1000 documentation
Updated the e1000 networking driver documentation.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jeff Kirsher [Tue, 5 Oct 2010 01:16:44 +0000 (01:16 +0000)]
ixgbevf.txt: Update ixgbevf documentation
Update the documentation for the ixgbevf (ixgbe virtual
function driver).
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Tue, 5 Oct 2010 20:07:43 +0000 (13:07 -0700)]
Merge branch 'core-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
rcu: rcu_read_lock_bh_held(): disabling irqs also disables bh
generic-ipi: Fix deadlock in __smp_call_function_single
Linus Torvalds [Tue, 5 Oct 2010 18:57:37 +0000 (11:57 -0700)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf trace scripting: Fix extern struct definitions
perf ui hist browser: Fix segfault on 'a' for annotate
perf tools: Fix build breakage
perf, x86: Handle in flight NMIs on P4 platform
oprofile, ARM: Release resources on failure
oprofile: Add Support for Intel CPU Family 6 / Model 29
Evgeny Kuznetsov [Tue, 5 Oct 2010 08:47:57 +0000 (12:47 +0400)]
wait: using uninitialized member of wait queue
The "flags" member of "struct wait_queue_t" is used in several places in
the kernel code without beeing initialized by init_wait(). "flags" is
used in bitwise operations.
If "flags" not initialized then unexpected behaviour may take place.
Incorrect flags might used later in code.
Added initialization of "wait_queue_t.flags" with zero value into
"init_wait".
Signed-off-by: Evgeny Kuznetsov <EXT-Eugeny.Kuznetsov@nokia.com>
[ The bit we care about does end up being initialized by both
prepare_to_wait() and add_to_wait_queue(), so this doesn't seem to
cause actual bugs, but is definitely the right thing to do -Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Tue, 5 Oct 2010 18:29:27 +0000 (11:29 -0700)]
modules: Fix module_bug_list list corruption race
With all the recent module loading cleanups, we've minimized the code
that sits under module_mutex, fixing various deadlocks and making it
possible to do most of the module loading in parallel.
However, that whole conversion totally missed the rather obscure code
that adds a new module to the list for BUG() handling. That code was
doubly obscure because (a) the code itself lives in lib/bugs.c (for
dubious reasons) and (b) it gets called from the architecture-specific
"module_finalize()" rather than from generic code.
Calling it from arch-specific code makes no sense what-so-ever to begin
with, and is now actively wrong since that code isn't protected by the
module loading lock any more.
So this commit moves the "module_bug_{finalize,cleanup}()" calls away
from the arch-specific code, and into the generic code - and in the
process protects it with the module_mutex so that the list operations
are now safe.
Future fixups:
- move the module list handling code into kernel/module.c where it
belongs.
- get rid of 'module_bug_list' and just use the regular list of modules
(called 'modules' - imagine that) that we already create and maintain
for other reasons.
Reported-and-tested-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Adrian Bunk <bunk@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Stefano Stabellini [Fri, 1 Oct 2010 16:35:46 +0000 (17:35 +0100)]
xen: do not initialize PV timers on HVM if !xen_have_vector_callback
if !xen_have_vector_callback do not initialize PV timer unconditionally
because we still don't know how many cpus are available and if there is
more than one we won't be able to receive the timer interrupts on
cpu > 0.
This patch fixes an hang at boot when Xen does not support vector
callbacks and the guest has multiple vcpus.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy@goop.org>
Stefano Stabellini [Mon, 4 Oct 2010 15:10:06 +0000 (16:10 +0100)]
xen: do not set xenstored_ready before xenbus_probe on hvm
Register_xenstore_notifier should guarantee that the caller gets
notified even if xenstore is already up.
Therefore we revert "do not notify callers from
register_xenstore_notifier" and set xenstored_read at the right time for
PV on HVM guests too.
In fact in case of PV on HVM guests xenstored is ready only after the
platform pci driver has completed the initialization, so do not set
xenstored_ready before the call to xenbus_probe().
This patch fixes a shutdown_event watcher registration bug that causes
"xm shutdown" not to work properly.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy@goop.org>
Dan Carpenter [Mon, 4 Oct 2010 02:28:36 +0000 (02:28 +0000)]
cls_u32: signedness bug
skb_headroom() is unsigned so "skb_headroom(skb) + toff" is also
unsigned and can't be less than zero. This test was added in
66d50d25:
"u32: negative offset fix" It was supposed to fix a regression.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dmitry Torokhov [Tue, 5 Oct 2010 04:46:11 +0000 (21:46 -0700)]
Input: wacom - fix runtime PM related deadlock
When runtime PM is enabled by default for input devices, X hangs in
wacom open:
[<
ffffffff814a00ea>] mutex_lock+0x1a/0x40
[<
ffffffffa02bc94b>] wacom_resume+0x3b/0x90 [wacom]
[<
ffffffff81327a32>] usb_resume_interface+0xd2/0x190
[<
ffffffff81327b5d>] usb_resume_both+0x6d/0x110
[<
ffffffff81327c24>] usb_runtime_resume+0x24/0x40
[<
ffffffff8130a2cf>] __pm_runtime_resume+0x26f/0x450
[<
ffffffff8130a23a>] __pm_runtime_resume+0x1da/0x450
[<
ffffffff8130a53a>] pm_runtime_resume+0x2a/0x50
[<
ffffffff81328176>] usb_autopm_get_interface+0x26/0x60
[<
ffffffffa02bc626>] wacom_open+0x36/0x90 [wacom]
wacom_open() takes wacom->lock and calls usb_autopm_get_interface(),
which in turn calls wacom_resume() which tries to acquire the lock
again.
The fix is to call usb_autopm_get_interface() first, before we take
the lock.
Since we do not do usb_autopm_put_interface() until wacom_close()
is called runtime PM is effectively disabled for the driver, however
changing it now would risk regressions so the complete fix will
have to wait till the next merge window.
Reported-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Gustavo F. Padovan [Mon, 4 Oct 2010 22:28:52 +0000 (19:28 -0300)]
Bluetooth: Disallow to change L2CAP_OPTIONS values when connected
L2CAP doesn't permit change like MTU, FCS, TxWindow values while the
connection is alive, we can only set that before the
connection/configuration process. That can lead to bugs in the L2CAP
operation.
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Linus Torvalds [Mon, 4 Oct 2010 20:35:48 +0000 (13:35 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/lrg/voltage-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6:
regulator: max8649 - fix setting extclk_freq
regulator: fix typo in current units
regulator: fix device_register() error handling
Linus Torvalds [Mon, 4 Oct 2010 18:45:35 +0000 (11:45 -0700)]
Merge branch 'merge-powerpc' of git://git.secretlab.ca/git/linux-2.6
* 'merge-powerpc' of git://git.secretlab.ca/git/linux-2.6:
powerpc/5200: tighten up ac97 reset timing
powerpc/5200: efika.c: Add of_node_put to avoid memory leak
powerpc/512x: fix clk_get() return value
Linus Torvalds [Mon, 4 Oct 2010 18:15:59 +0000 (11:15 -0700)]
Merge branch 'fix/misc' of git://git./linux/kernel/git/tiwai/sound-2.6
* 'fix/misc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: i2c/other/ak4xx-adda: Fix a compile warning with CONFIG_PROCFS=n
ALSA: prevent heap corruption in snd_ctl_new()
Linus Torvalds [Mon, 4 Oct 2010 18:15:06 +0000 (11:15 -0700)]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/staging
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging:
hwmon: f71882fg: use a muxed resource lock for the Super I/O port
Linus Torvalds [Mon, 4 Oct 2010 18:14:21 +0000 (11:14 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/davej/cpufreq
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
[CPUFREQ] Fix memory leaks in pcc_cpufreq_do_osc
[CPUFREQ] acpi-cpufreq: add missing __percpu markup
Linus Torvalds [Mon, 4 Oct 2010 18:13:22 +0000 (11:13 -0700)]
Merge branch 'merge-spi' of git://git.secretlab.ca/git/linux-2.6
* 'merge-spi' of git://git.secretlab.ca/git/linux-2.6:
of/spi: Fix OF-style driver binding of spi devices
spi: spi-gpio.c tests SPI_MASTER_NO_RX bit twice, but not SPI_MASTER_NO_TX
spi/mpc8xxx: fix buffer overrun on large transfers
Linus Torvalds [Mon, 4 Oct 2010 18:11:01 +0000 (11:11 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
vlan: dont drop packets from unknown vlans in promiscuous mode
Phonet: Correct header retrieval after pskb_may_pull
um: Proper Fix for
f25c80a4: remove duplicate structure field initialization
ip_gre: Fix dependencies wrt. ipv6.
net-2.6: SYN retransmits: Add new parameter to retransmits_timed_out()
iwl3945: queue the right work if the scan needs to be aborted
mac80211: fix use-after-free
Linus Torvalds [Mon, 4 Oct 2010 18:10:26 +0000 (11:10 -0700)]
Merge branch 'drm-intel-fixes' of git://git./linux/kernel/git/ickle/drm-intel
* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel:
drm/i915: Rephrase pwrite bounds checking to avoid any potential overflow
drm/i915: Sanity check pread/pwrite
drm/i915: Use pipe state to tell when pipe is off
drm/i915: vblank status not valid while training display port
drivers/gpu/drm/i915/i915_gem.c: Add missing error handling code
drm/i915: Fix refleak during eviction.
drm/i915: fix GMCH power reporting
Hugh Dickins [Sun, 3 Oct 2010 00:49:08 +0000 (17:49 -0700)]
ksm: fix bad user data when swapping
Building under memory pressure, with KSM on 2.6.36-rc5, collapsed with
an internal compiler error: typically indicating an error in swapping.
Perhaps there's a timing issue which makes it now more likely, perhaps
it's just a long time since I tried for so long: this bug goes back to
KSM swapping in 2.6.33.
Notice how reuse_swap_page() allows an exclusive page to be reused, but
only does SetPageDirty if it can delete it from swap cache right then -
if it's currently under Writeback, it has to be left in cache and we
don't SetPageDirty, but the page can be reused. Fine, the dirty bit
will get set in the pte; but notice how zap_pte_range() does not bother
to transfer pte_dirty to page_dirty when unmapping a PageAnon.
If KSM chooses to share such a page, it will look like a clean copy of
swapcache, and not be written out to swap when its memory is needed;
then stale data read back from swap when it's needed again.
We could fix this in reuse_swap_page() (or even refuse to reuse a
page under writeback), but it's more honest to fix my oversight in
KSM's write_protect_page(). Several days of testing on three machines
confirms that this fixes the issue they showed.
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hugh Dickins [Sun, 3 Oct 2010 00:46:06 +0000 (17:46 -0700)]
ksm: fix page_address_in_vma anon_vma oops
2.6.36-rc1 commit
21d0d443cdc1658a8c1484fdcece4803f0f96d0e "rmap:
resurrect page_address_in_vma anon_vma check" was right to resurrect
that check; but now that it's comparing anon_vma->roots instead of
just anon_vmas, there's a danger of oopsing on a NULL anon_vma.
In most cases no NULL anon_vma ever gets here; but it turns out that
occasionally KSM, when enabled on a forked or forking process, will
itself call page_address_in_vma() on a "half-KSM" page left over from
an earlier failed attempt to merge - whose page_anon_vma() is NULL.
It's my bug that those should be getting here at all: I thought they
were already dealt with, this oops proves me wrong, I'll fix it in
the next release - such pages are effectively pinned until their
process exits, since rmap cannot find their ptes (though swapoff can).
For now just work around it by making page_address_in_vma() safe (and
add a comment on why that check is wanted anyway). A similar check
in __page_check_anon_rmap() is safe because do_page_add_anon_rmap()
already excluded KSM pages.
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Daney [Thu, 23 Sep 2010 18:24:09 +0000 (11:24 -0700)]
MIPS: Octeon: Place cnmips_cu2_setup in __init memory.
It is an early_initcall, so it should be in __init memory.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1593/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 23 Sep 2010 18:23:29 +0000 (11:23 -0700)]
MIPS: Don't place cu2 notifiers in __cpuinitdata
The notifiers may be called at any time, so the notifier_block cannot
be in init memory.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1592/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Shmulik Ladkani [Tue, 31 Aug 2010 10:24:19 +0000 (13:24 +0300)]
MIPS: Calculate VMLINUZ_LOAD_ADDRESS based on the length of vmlinux.bin
Fix VMLINUZ_LOAD_ADDRESS calculation to be based on the length of
vmlinux.bin, the actual uncompressed kernel binary.
Previously it was based on the length of KBUILD_IMAGE (the unstripped ELF
vmlinux), which is bigger than vmlinux.bin. As a result, vmlinuz was
loaded into a memory address higher then actually needed - a problem for
small memory platforms.
Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
To: linux-mips@linux-mips.org
Cc: alex@digriz.org.uk
Cc: manuel.lauss@googlemail.com
Cc: sam@ravnborg.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1564/
Acked-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Manuel Lauss [Thu, 19 Aug 2010 11:37:13 +0000 (13:37 +0200)]
MIPS: Alchemy: Resolve prom section mismatches
The function prom_init_cmdline() references the variable __initdata
arcs_cmdline.
The function prom_get_ethernet_addr() references the variable __initdata
arcs_cmdline.
Annotate prom_init_cmdline() as __init, unexport and annotate
prom_get_ethernet_addr() since it's no longer called from within
driver code.
Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/1547/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Mon, 20 Sep 2010 14:00:19 +0000 (15:00 +0100)]
MIPS: Fix syscall 64 bit number comments.
Noticed and original patch by Philby John <pjohn@mvista.com>.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Mon, 23 Aug 2010 21:10:37 +0000 (14:10 -0700)]
MIPS: Hookup fanotify_init, fanotify_mark, and prlimit64 syscalls.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1553/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
FUJITA Tomonori [Sat, 14 Aug 2010 07:02:37 +0000 (16:02 +0900)]
MIPS: TX49xx: Rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGN
Architectures need to set ARCH_DMA_MINALIGN to the minimum DMA
alignment (commit
a6eb9fe105d5de0053b261148cee56c94b4720ca). Defining
ARCH_KMALLOC_MINALIGN doesn't work anymore.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: anemo@mba.ocn.ne.jp
Patchwork: https://patchwork.linux-mips.org/patch/1544/
Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Bernhard Walle [Fri, 3 Sep 2010 08:15:34 +0000 (10:15 +0200)]
MIPS: N32: Fix getdents64 syscall for n32
Commit
31c984a5acabea5d8c7224dc226453022be46f33 introduced a new syscall
getdents64. However, in the syscall table, the new syscall still refers to
the old getdents which doesn't work.
The problem appeared with a system that uses the eglibc 2.12-r11187 (that
utilizes that new syscall) is very confused. The fix has been tested with
that eglibc version.
Signed-off-by: Bernhard Walle <walle@corscience.de>
To: linux-mips@linux-mips.org
Cc: ddaney@caviumnetworks.com
Cc: akpm@linux-foundation.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1567/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Joe Perches [Sun, 12 Sep 2010 05:10:52 +0000 (22:10 -0700)]
MIPS: Remove pr_<level> uses of KERN_<level>
These would result in KERN_<level> actually getting printed.
Signed-off-by: Joe Perches <joe@perches.com>
To: Jiri Kosina <trivial@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1581/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Sat, 18 Sep 2010 23:09:09 +0000 (00:09 +0100)]
MIPS: PNX8550: Sort out machine halt, restart and powerdown functions.
No rubbish printks - those belong to userspace. The halt function now
actually halts the system and the poweroff function was deleted because
it didn't actually power down the system.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Fri, 17 Sep 2010 16:07:48 +0000 (17:07 +0100)]
MIPS: GIC: Remove dependencies from Malta files.
This prevents the GIC code from being reusable sanely.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Thu, 16 Sep 2010 10:40:41 +0000 (11:40 +0100)]
MIPS: Kconfig: Fix and clarify kconfig help text for VSMP and SMTC.
Only VSMP was known as SMVP and generally the help text was too short to
be helpful.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Thu, 2 Sep 2010 21:22:23 +0000 (23:22 +0200)]
MIPS: DMA: Fix computation of DMA flags from device's coherent_dma_mask.
This only matters for ISA devices with a 24-bit DMA limit or for devices
with a 32-bit DMA limit on systems with ZONE_DMA32 enabled. The latter
currently only affects 32-bit PCI cards on Sibyte-based systems with more
than 1GB RAM installed.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>