Linus Torvalds [Wed, 21 Jul 2010 16:31:15 +0000 (09:31 -0700)]
Merge branch 'urgent' of git://git./linux/kernel/git/brodo/pcmcia-2.6
* 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6:
pcmcia: fix 'driver ... did not release config properly' warning
Linus Torvalds [Wed, 21 Jul 2010 16:30:59 +0000 (09:30 -0700)]
Merge branch 'shrinker' of git://git./linux/kernel/git/dgc/xfsdev
* 'shrinker' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/xfsdev:
mm: add context argument to shrinker callback to remaining shrinkers
Linus Torvalds [Wed, 21 Jul 2010 16:29:39 +0000 (09:29 -0700)]
Merge branch 'fix/asoc' of git://git./linux/kernel/git/tiwai/sound-2.6
* 'fix/asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ASoC: Select wm_hubs automatically for WM8994
ASoC: Remove duplicate AUX definition from WM8776
ASoC:: remove a redundant snd_soc_unregister_codec call in wm8988_register
ASoC: wm8727: add a missing return in wm8727_platform_probe
ASoC: fsi: fixup wrong value setting order of TDM
ASoC: fsi: fixup clock inversion operation
Linus Torvalds [Wed, 21 Jul 2010 16:28:50 +0000 (09:28 -0700)]
Merge git://git./linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
math-emu: correct test for downshifting fraction in _FP_FROM_INT()
perf: Add DWARF register lookup for sparc
MAINTAINERS: Add SBUS driver path to sparc entry.
drivers/sbus: Remove unnecessary casts of private_data
sparc: remove homegrown L1_CACHE_ALIGN macro
sparc64: fix the build error due to smp_kgdb_capture_client()
sparc64: Fix maybe_change_configuration() PCR setting.
arch/sparc/kernel: Eliminate what looks like a NULL pointer dereference
sparc64: Update defconfig.
sunsu: Fix use after free in su_remove().
sunserial: Don't call add_preferred_console() when console= is specified.
sparc32: Kill none_mask, it's bogus.
Linus Torvalds [Wed, 21 Jul 2010 16:25:42 +0000 (09:25 -0700)]
Fix up trivial spelling errors ('taht' -> 'that')
Pointed out by Lucas who found the new one in a comment in
setup_percpu.c. And then I fixed the others that I grepped
for.
Reported-by: Lucas <canolucas@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Patrick McHardy [Tue, 20 Jul 2010 22:21:42 +0000 (15:21 -0700)]
pcmcia: fix 'driver ... did not release config properly' warning
Up to 2.6.34 pcmcia_release_irq() reset p_dev->_irq to 0 after releasing
the irq. The IRQ is now released in pcmcia_disable_device(), however
p_dev->_irq is not reset, triggering a warning in pcmcia_device_remove().
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Dave Chinner [Wed, 21 Jul 2010 05:33:01 +0000 (15:33 +1000)]
mm: add context argument to shrinker callback to remaining shrinkers
Add the shrinkers missed in the first conversion of the API in
commit
7f8275d0d660c146de6ee3017e1e2e594c49e820 ("mm: add context argument to
shrinker callback").
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Mikael Pettersson [Wed, 21 Jul 2010 01:45:14 +0000 (18:45 -0700)]
math-emu: correct test for downshifting fraction in _FP_FROM_INT()
The kernel's math-emu code contains a macro _FP_FROM_INT() which is
used to convert an integer to a raw normalized floating-point value.
It does this basically in three steps:
1. Compute the exponent from the number of leading zero bits.
2. Downshift large fractions to put the MSB in the right position
for normalized fractions.
3. Upshift small fractions to put the MSB in the right position.
There is an boundary error in step 2, causing a fraction with its
MSB exactly one bit above the normalized MSB position to not be
downshifted. This results in a non-normalized raw float, which when
packed becomes a massively inaccurate representation for that input.
The impact of this depends on a number of arch-specific factors,
but it is known to have broken emulation of FXTOD instructions
on UltraSPARC III, which was originally reported as GCC bug 44631
<http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44631>.
Any arch which uses math-emu to emulate conversions from integers to
same-size floats may be affected.
The fix is simple: the exponent comparison used to determine if the
fraction should be downshifted must be "<=" not "<".
I'm sending a kernel module to test this as a reply to this message.
There are also SPARC user-space test cases in the GCC bug entry.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 21 Jul 2010 01:29:25 +0000 (18:29 -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/r600: fix possible NULL pointer derefernce
drm/radeon/kms: add quirk for ASUS HD 3600 board
include/linux/vgaarb.h: add missing part of include guard
drm/nouveau: Fix crashes during fbcon init on single head cards.
drm/nouveau: fix pcirom vbios shadow breakage from acpi rom patch
drm/radeon/kms: fix shared ddc harder
drm/i915: enable low power render writes on GEN3 hardware.
drm/i915: Define MI_ARB_STATE bits
vmwgfx: return -EFAULT if copy_to_user fails
fb: handle allocation failure in alloc_apertures()
drm: radeon: check kzalloc() result
drm/ttm: Fix build on architectures without AGP
drm/radeon/kms: fix gtt MC base alignment on rs4xx/rs690/rs740 asics
drm/radeon/kms: fix possible mis-detection of sideport on rs690/rs740
drm/radeon/kms: fix legacy tv-out pal mode
Alex Deucher [Wed, 21 Jul 2010 00:29:32 +0000 (10:29 +1000)]
drm/r600: fix possible NULL pointer derefernce
Reported-by: Alexander Y. Fomichev <git.user@gmail.com>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Tue, 20 Jul 2010 22:07:22 +0000 (18:07 -0400)]
drm/radeon/kms: add quirk for ASUS HD 3600 board
Connector is actually DVI rather than HDMI.
Reported-by: trapDoor <trapdoor6@gmail.com>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Doug Goldstein [Tue, 20 Jul 2010 22:22:25 +0000 (15:22 -0700)]
include/linux/vgaarb.h: add missing part of include guard
vgaarb.h was missing the #define of the #ifndef at the top for the guard
to prevent multiple #include's from causing re-define errors
Signed-off-by: Doug Goldstein <cardoe@gentoo.org>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Linus Torvalds [Tue, 20 Jul 2010 23:27:58 +0000 (16:27 -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: do not include cap/dentry releases in replayed messages
ceph: reuse request message when replaying against recovering mds
ceph: fix creation of ipv6 sockets
ceph: fix parsing of ipv6 addresses
ceph: fix printing of ipv6 addrs
ceph: add kfree() to error path
ceph: fix leak of mon authorizer
ceph: fix message revocation
Linus Torvalds [Tue, 20 Jul 2010 23:27:34 +0000 (16:27 -0700)]
Merge branch 'linuxdocs' of git://git./linux/kernel/git/rdunlap/linux-docs
* 'linuxdocs' of git://git.kernel.org/pub/scm/linux/kernel/git/rdunlap/linux-docs:
documentation: fix almost duplicate filenames (IO/io-mapping.txt)
Linus Torvalds [Tue, 20 Jul 2010 23:26:42 +0000 (16:26 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (24 commits)
bridge: Partially disable netpoll support
tcp: fix crash in tcp_xmit_retransmit_queue
IPv6: fix CoA check in RH2 input handler (mip6_rthdr_input())
ibmveth: lost IRQ while closing/opening device leads to service loss
rt2x00: Fix lockdep warning in rt2x00lib_probe_dev()
vhost: avoid pr_err on condition guest can trigger
ipmr: Don't leak memory if fib lookup fails.
vhost-net: avoid flush under lock
net: fix problem in reading sock TX queue
net/core: neighbour update Oops
net: skb_tx_hash() fix relative to skb_orphan_try()
rfs: call sock_rps_record_flow() in tcp_splice_read()
xfrm: do not assume that template resolving always returns xfrms
hostap_pci: set dev->base_addr during probe
axnet_cs: use spin_lock_irqsave in ax_interrupt
dsa: Fix Kconfig dependencies.
act_nat: not all of the ICMP packets need an IP header payload
r8169: incorrect identifier for a 8168dp
Phonet: fix skb leak in pipe endpoint accept()
Bluetooth: Update sec_level/auth_type for already existing connections
...
Paul E. McKenney [Tue, 20 Jul 2010 20:24:34 +0000 (13:24 -0700)]
vfs: fix RCU-lockdep false positive due to /proc
If a single-threaded process does a file-descriptor operation, and some
other process accesses that same file descriptor via /proc, the current
rcu_dereference_check_fdtable() can give a false-positive RCU-lockdep
splat due to the reference count being increased by the /proc access after
the reference-count check in fget_light() but before the check in
rcu_dereference_check_fdtable().
This commit prevents this false positive by checking for a single-threaded
process. To avoid #include hell, this commit uses the wrapper for
thread_group_empty(current) defined by rcu_my_thread_group_empty()
provided in a separate commit.
Located-by: Miles Lane <miles.lane@gmail.com>
Located-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Marek Szyprowski [Tue, 20 Jul 2010 20:24:33 +0000 (13:24 -0700)]
sdhci-s3c: add missing remove function
System will crash sooner or later once the memory with the code of the
s3c-sdhci.ko module is reused for something else. I really have no idea
how the lack of remove function went unnoticed into the mainline code.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andres Salomon [Tue, 20 Jul 2010 20:24:32 +0000 (13:24 -0700)]
Andres has moved
My Collabora address is no longer enabled - update the MODULE_AUTHOR
fields of drivers to my current email address.
Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Yinghai Lu [Tue, 20 Jul 2010 20:24:31 +0000 (13:24 -0700)]
x86,nobootmem: make alloc_bootmem_node fall back to other node when 32bit numa is used
Borislav Petkov reported his 32bit numa system has problem:
[ 0.000000] Reserving total of 4c00 pages for numa KVA remap
[ 0.000000] kva_start_pfn ~ 32800 max_low_pfn ~ 375fe
[ 0.000000] max_pfn = 238000
[ 0.000000] 8202MB HIGHMEM available.
[ 0.000000] 885MB LOWMEM available.
[ 0.000000] mapped low ram: 0 -
375fe000
[ 0.000000] low ram: 0 -
375fe000
[ 0.000000] alloc (nid=8 100000 -
7ee00000) (1000000 -
ffffffff) 1000 1000 => 34e7000
[ 0.000000] alloc (nid=8 100000 -
7ee00000) (1000000 -
ffffffff) 200 40 => 34c9d80
[ 0.000000] alloc (nid=0 100000 -
7ee00000) (1000000 -
ffffffffffffffff) 180 40 => 34e6140
[ 0.000000] alloc (nid=1
80000000 -
c7e60000) (1000000 -
ffffffffffffffff) 240 40 =>
80000000
[ 0.000000] BUG: unable to handle kernel paging request at
40000000
[ 0.000000] IP: [<
c2c8cff1>] __alloc_memory_core_early+0x147/0x1d6
[ 0.000000] *pdpt =
0000000000000000 *pde =
f000ff53f000ff00
...
[ 0.000000] Call Trace:
[ 0.000000] [<
c2c8b4f8>] ? __alloc_bootmem_node+0x216/0x22f
[ 0.000000] [<
c2c90c9b>] ? sparse_early_usemaps_alloc_node+0x5a/0x10b
[ 0.000000] [<
c2c9149e>] ? sparse_init+0x1dc/0x499
[ 0.000000] [<
c2c79118>] ? paging_init+0x168/0x1df
[ 0.000000] [<
c2c780ff>] ? native_pagetable_setup_start+0xef/0x1bb
looks like it allocates too much high address for bootmem.
Try to cut limit with get_max_mapped()
Reported-by: Borislav Petkov <borislav.petkov@amd.com>
Tested-by: Conny Seidel <conny.seidel@amd.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: <stable@kernel.org> [2.6.34.x]
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Yinghai Lu [Tue, 20 Jul 2010 20:24:30 +0000 (13:24 -0700)]
x86, numa: fix boot without RAM on node0 again
Commit
e534c7c5f8d6 ("numa: x86_64: use generic percpu var
numa_node_id() implementation") broke numa systems that don't have ram
on node0 when MEMORY_HOTPLUG is enabled, because cpu_up() will call
cpu_to_node() before per_cpu(numa_node) is setup for APs.
When Node0 doesn't have RAM, on x86, cpus already round it to nearest
node with RAM in x86_cpu_to_node_map. and per_cpu(numa_node) is not set
up until in c_init for APs.
When later cpu_up() calling cpu_to_node() will get 0 again, and make it
online even there is no RAM on node0. so later all APs can not booted up,
and later will have panic.
[ 1.611101] On node 0 totalpages: 0
.........
[ 2.608558] On node 0 totalpages: 0
[ 2.612065] Brought up 1 CPUs
[ 2.615199] Total of 1 processors activated (3990.31 BogoMIPS).
...
93.225341] calling loop_init+0x0/0x1a4 @ 1
[ 93.229314] PERCPU: allocation failed, size=80 align=8, failed to populate
[ 93.246539] Pid: 1, comm: swapper Tainted: G W 2.6.35-rc4-tip-yh-04371-gd64e6c4-dirty #354
[ 93.264621] Call Trace:
[ 93.266533] [<
ffffffff81125e43>] pcpu_alloc+0x83a/0x8e7
[ 93.270710] [<
ffffffff81125f15>] __alloc_percpu+0x10/0x12
[ 93.285849] [<
ffffffff8140786c>] alloc_disk_node+0x94/0x16d
[ 93.291811] [<
ffffffff81407956>] alloc_disk+0x11/0x13
[ 93.306157] [<
ffffffff81503e51>] loop_alloc+0xa7/0x180
[ 93.310538] [<
ffffffff8277ef48>] loop_init+0x9b/0x1a4
[ 93.324909] [<
ffffffff8277eead>] ? loop_init+0x0/0x1a4
[ 93.329650] [<
ffffffff810001f2>] do_one_initcall+0x57/0x136
[ 93.345197] [<
ffffffff827486d0>] kernel_init+0x184/0x20e
[ 93.348146] [<
ffffffff81034954>] kernel_thread_helper+0x4/0x10
[ 93.365194] [<
ffffffff81c7cc3c>] ? restore_args+0x0/0x30
[ 93.369305] [<
ffffffff8274854c>] ? kernel_init+0x0/0x20e
[ 93.386011] [<
ffffffff81034950>] ? kernel_thread_helper+0x0/0x10
[ 93.392047] loop: out of memory
...
Try to assign per_cpu(numa_node) early
[akpm@linux-foundation.org: tidy up code comment]
Signed-off-by: Yinghai <yinghai@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Denys Vlasenko <vda.linux@googlemail.com>
Acked-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anton Vorontsov [Tue, 20 Jul 2010 20:24:28 +0000 (13:24 -0700)]
edac: mpc85xx: add support for MPC8569 EDAC controllers
Simply add a proper ID into the device table.
Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Dave Jiang <djiang@mvista.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anton Vorontsov [Tue, 20 Jul 2010 20:24:27 +0000 (13:24 -0700)]
edac: mpc85xx: fix MPC85xx dependency
Since commit
5753c082f66eca5be81f6bda85c1718c5eea6ada ("powerpc/85xx:
Kconfig cleanup"), there is no MPC85xx Kconfig symbol anymore, so the
driver became non-selectable.
This patch fixes the issue by switching to PPC_85xx symbol.
Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Dave Jiang <djiang@mvista.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Nick Piggin [Tue, 20 Jul 2010 20:24:25 +0000 (13:24 -0700)]
mm/vmscan.c: fix mapping use after free
We need lock_page_nosync() here because we have no reference to the
mapping when taking the page lock.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Manfred Spraul [Tue, 20 Jul 2010 20:24:23 +0000 (13:24 -0700)]
ipc/sem.c: bugfix for semop() not reporting successful operation
The last change to improve the scalability moved the actual wake-up out of
the section that is protected by spin_lock(sma->sem_perm.lock).
This means that IN_WAKEUP can be in queue.status even when the spinlock is
acquired by the current task. Thus the same loop that is performed when
queue.status is read without the spinlock acquired must be performed when
the spinlock is acquired.
Thanks to kamezawa.hiroyu@jp.fujitsu.com for noticing lack of the memory
barrier.
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=16255
[akpm@linux-foundation.org: clean up kerneldoc, checkpatch warning and whitespace]
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Reported-by: Luca Tettamanti <kronos.it@gmail.com>
Tested-by: Luca Tettamanti <kronos.it@gmail.com>
Reported-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Maciej Rutecki <maciej.rutecki@gmail.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>
Francisco Jerez [Sat, 10 Jul 2010 15:37:00 +0000 (17:37 +0200)]
drm/nouveau: Fix crashes during fbcon init on single head cards.
this fixes a regression since the fbcon rework.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Ben Skeggs [Mon, 12 Jul 2010 03:15:44 +0000 (13:15 +1000)]
drm/nouveau: fix pcirom vbios shadow breakage from acpi rom patch
On nv50 it became impossible to attempt a PCI ROM shadow of the VBIOS,
which will break some setups.
This patch also removes the different ordering of shadow methods for
pre-nv50 chipsets. The reason for the different ordering was paranoia,
but it should hopefully be OK to try shadowing PRAMIN first.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Tue, 20 Jul 2010 15:27:54 +0000 (11:27 -0400)]
drm/radeon/kms: fix shared ddc harder
This fixes a regression caused by
b2ea4aa67bfd084834edd070e0a4a47857d6db59
due to the way shared ddc with multiple digital connectors was handled.
You generally have two cases where DDC lines are shared:
- HDMI + VGA
- HDMI + DVI-D
HDMI + VGA is easy to deal with because you can check the EDID for the
to see if the attached monitor is digital. A shared DDC line with two
digital connectors is more complex. You can't use the hdmi bits in the
EDID since they may not be there with DVI<->HDMI adapters. In this case
all we can do is check the HPD pins to see which is connected as we have
no way of knowing using the EDID.
Reported-by: trapdoor6@gmail.com
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Randy Dunlap [Mon, 19 Jul 2010 22:20:27 +0000 (22:20 +0000)]
documentation: fix almost duplicate filenames (IO/io-mapping.txt)
Having both IO-mapping.txt and io-mapping.txt in Documentation/
was confusing and/or bothersome to some people, so rename
IO-mapping.txt to bus-virt-phys-mapping.txt. Also update
Documentation/00-INDEX for both of these files.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Kees Bakker <kees.bakker@xs4all.nl>
Cc: Keith Packard <keithp@keithp.com>
Linus Torvalds [Tue, 20 Jul 2010 15:22:15 +0000 (08:22 -0700)]
Merge git://git.infradead.org/users/cbou/battery-2.6.35
* git://git.infradead.org/users/cbou/battery-2.6.35:
ds2782_battery: Fix ds2782_get_capacity return value
Chanwoo Choi [Tue, 20 Jul 2010 05:28:33 +0000 (14:28 +0900)]
ASoC: Select wm_hubs automatically for WM8994
Otherwise all machine drivers need to do so.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Herbert Xu [Mon, 19 Jul 2010 19:26:45 +0000 (19:26 +0000)]
bridge: Partially disable netpoll support
The new netpoll code in bridging contains use-after-free bugs
that are non-trivial to fix.
This patch fixes this by removing the code that uses skbs after
they're freed.
As a consequence, this means that we can no longer call bridge
from the netpoll path, so this patch also removes the controller
function in order to disable netpoll.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Thanks,
Signed-off-by: David S. Miller <davem@davemloft.net>
Dave Airlie [Tue, 20 Jul 2010 03:15:31 +0000 (13:15 +1000)]
drm/i915: enable low power render writes on GEN3 hardware.
A lot of 945GMs have had stability issues for a long time, this manifested as X hangs, blitter engine hangs, and lots of crashes.
one such report is at:
https://bugs.freedesktop.org/show_bug.cgi?id=20560
along with numerous distro bugzillas.
This only took a week of digging and hair ripping to figure out.
Tracked down and tested on a 945GM Lenovo T60,
previously running
x11perf -copypixwin500
or
x11perf -copywinpix500
repeatedly would cause the GPU to wedge within 4 or 5 tries, with random busy bits set.
After this patch no hangs were observed.
cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Keith Packard [Tue, 20 Jul 2010 04:12:35 +0000 (21:12 -0700)]
drm/i915: Define MI_ARB_STATE bits
The i915 memory arbiter has a register full of configuration
bits which are currently not defined in the driver header file.
Signed-off-by: Keith Packard <keithp@keithp.com>
cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Dan Carpenter [Sat, 10 Jul 2010 14:30:04 +0000 (16:30 +0200)]
vmwgfx: return -EFAULT if copy_to_user fails
copy_to_user() returns the number of bytes remaining to be copied, but
we want to return a negative error code. This gets copied to user
space.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Dan Carpenter [Thu, 15 Jul 2010 08:39:47 +0000 (10:39 +0200)]
fb: handle allocation failure in alloc_apertures()
If the kzalloc() fails we should return NULL. All the places that call
alloc_apertures() check for this already.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: James Simmons <jsimmons@infradead.org>
Acked-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Kulikov Vasiliy [Fri, 16 Jul 2010 16:13:33 +0000 (20:13 +0400)]
drm: radeon: check kzalloc() result
If kzalloc() fails exit with -ENOMEM.
Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Ben Hutchings [Sun, 18 Jul 2010 20:51:42 +0000 (21:51 +0100)]
drm/ttm: Fix build on architectures without AGP
Make inclusion of <asm/agp.h> conditional on TTM_HAS_AGP. The use
of the functions declared in it is already conditional.
Reported-by: Geert Stappers <stappers@stappers.nl>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Tested-by: Geert Stappers <stappers@stappers.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Linus Torvalds [Tue, 20 Jul 2010 03:18:24 +0000 (20:18 -0700)]
Merge branch 'shrinker' of git://git./linux/kernel/git/dgc/xfsdev
* 'shrinker' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/xfsdev:
xfs: track AGs with reclaimable inodes in per-ag radix tree
xfs: convert inode shrinker to per-filesystem contexts
mm: add context argument to shrinker callback
Linus Torvalds [Tue, 20 Jul 2010 02:33:02 +0000 (19:33 -0700)]
Merge git://git./linux/kernel/git/mason/btrfs-unstable
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
Btrfs: fix checks in BTRFS_IOC_CLONE_RANGE
Btrfs: fix CLONE ioctl destination file size expansion to block boundary
Btrfs: fix split_leaf double split corner case
Dave Chinner [Mon, 19 Jul 2010 23:43:39 +0000 (09:43 +1000)]
xfs: track AGs with reclaimable inodes in per-ag radix tree
https://bugzilla.kernel.org/show_bug.cgi?id=16348
When the filesystem grows to a large number of allocation groups,
the summing of recalimable inodes gets expensive. In many cases,
most AGs won't have any reclaimable inodes and so we are wasting CPU
time aggregating over these AGs. This is particularly important for
the inode shrinker that gets called frequently under memory
pressure.
To avoid the overhead, track AGs with reclaimable inodes in the
per-ag radix tree so that we can find all the AGs with reclaimable
inodes via a simple gang tag lookup. This involves setting the tag
when the first reclaimable inode is tracked in the AG, and removing
the tag when the last reclaimable inode is removed from the tree.
Then the summation process becomes a loop walking the radix tree
summing AGs with the reclaim tag set.
This significantly reduces the overhead of scanning - a 6400 AG
filesystea now only uses about 25% of a cpu in kswapd while slab
reclaim progresses instead of being permanently stuck at 100% CPU
and making little progress. Clean filesystems filesystems will see
no overhead and the overhead only increases linearly with the number
of dirty AGs.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Dave Chinner [Mon, 19 Jul 2010 22:07:02 +0000 (08:07 +1000)]
xfs: convert inode shrinker to per-filesystem contexts
Now the shrinker passes us a context, wire up a shrinker context per
filesystem. This allows us to remove the global mount list and the
locking problems that introduced. It also means that a shrinker call
does not need to traverse clean filesystems before finding a
filesystem with reclaimable inodes. This significantly reduces
scanning overhead when lots of filesystems are present.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Dan Rosenberg [Mon, 19 Jul 2010 20:58:20 +0000 (16:58 -0400)]
Btrfs: fix checks in BTRFS_IOC_CLONE_RANGE
1. The BTRFS_IOC_CLONE and BTRFS_IOC_CLONE_RANGE ioctls should check
whether the donor file is append-only before writing to it.
2. The BTRFS_IOC_CLONE_RANGE ioctl appears to have an integer
overflow that allows a user to specify an out-of-bounds range to copy
from the source file (if off + len wraps around). I haven't been able
to successfully exploit this, but I'd imagine that a clever attacker
could use this to read things he shouldn't. Even if it's not
exploitable, it couldn't hurt to be safe.
Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com>
cc: stable@kernel.org
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Linus Torvalds [Mon, 19 Jul 2010 20:19:32 +0000 (13:19 -0700)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, pci, mrst: Add extra sanity check in walking the PCI extended cap chain
x86: Fix x2apic preenabled system with kexec
x86: Force HPET readback_cmp for all ATI chipsets
Linus Torvalds [Mon, 19 Jul 2010 20:18:34 +0000 (13:18 -0700)]
Merge branch 'kmemleak' of git://git./linux/kernel/git/cmarinas/linux-2.6-cm
* 'kmemleak' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-2.6-cm:
kmemleak: Add support for NO_BOOTMEM configurations
kmemleak: Annotate false positive in init_section_page_cgroup()
Linus Torvalds [Mon, 19 Jul 2010 20:18:05 +0000 (13:18 -0700)]
Merge branch 'for-linus' of git://git390.marist.edu/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] cio: fix potential overflow in chpid descriptor
[S390] add missing device put
[S390] dasd: use correct label location for diag fba disks
Sreedhara DS [Mon, 19 Jul 2010 08:37:42 +0000 (09:37 +0100)]
intel_scu_ipc: Oops/crash fixes
- fix reversing of command/sub arguments
- fix a crash if the i2c interface is called before the device is found
Signed-off-by: Sreedhara DS <sreedhara.ds@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Sage Weil [Sat, 12 Jun 2010 22:31:14 +0000 (22:31 +0000)]
Btrfs: fix CLONE ioctl destination file size expansion to block boundary
The CLONE and CLONE_RANGE ioctls round up the range of extents being
cloned to the block size when the range to clone extends to the end of file
(this is always the case with CLONE). It was then using that offset when
extending the destination file's i_size. Fix this by not setting i_size
beyond the originally requested ending offset.
This bug was introduced by
a22285a6 (2.6.35-rc1).
Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 7 Jul 2010 14:51:48 +0000 (10:51 -0400)]
Btrfs: fix split_leaf double split corner case
split_leaf was not properly balancing leaves when it was forced to
split a leaf twice. This commit adds an extra push left and right
before forcing the double split in hopes of getting the slot where
we want to insert at either the start or end of the leaf.
If the extra pushes do work, then we are able to avoid splitting twice
and we keep the tree properly balanced.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Ilpo Järvinen [Mon, 19 Jul 2010 01:16:18 +0000 (01:16 +0000)]
tcp: fix crash in tcp_xmit_retransmit_queue
It can happen that there are no packets in queue while calling
tcp_xmit_retransmit_queue(). tcp_write_queue_head() then returns
NULL and that gets deref'ed to get sacked into a local var.
There is no work to do if no packets are outstanding so we just
exit early.
This oops was introduced by
08ebd1721ab8fd (tcp: remove tp->lost_out
guard to make joining diff nicer).
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Reported-by: Lennart Schulte <lennart.schulte@nets.rwth-aachen.de>
Tested-by: Lennart Schulte <lennart.schulte@nets.rwth-aachen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 19 Jul 2010 19:38:51 +0000 (12:38 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6
Catalin Marinas [Mon, 19 Jul 2010 10:54:15 +0000 (11:54 +0100)]
kmemleak: Add support for NO_BOOTMEM configurations
With commits
08677214 and
59be5a8e, alloc_bootmem()/free_bootmem() and
friends use the early_res functions for memory management when
NO_BOOTMEM is enabled. This patch adds the kmemleak calls in the
corresponding code paths for bootmem allocations.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: stable@kernel.org
Catalin Marinas [Mon, 19 Jul 2010 10:54:14 +0000 (11:54 +0100)]
kmemleak: Annotate false positive in init_section_page_cgroup()
The pointer to the page_cgroup table allocated in
init_section_page_cgroup() is stored in section->page_cgroup as (base -
pfn). Since this value does not point to the beginning or inside the
allocated memory block, kmemleak reports a false positive.
This was reported in bugzilla.kernel.org as #16297.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Adrien Dessemond <adrien.dessemond@gmail.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Andrew Morton <akpm@linux-foundation.org>
Sebastian Ott [Mon, 19 Jul 2010 07:22:37 +0000 (09:22 +0200)]
[S390] cio: fix potential overflow in chpid descriptor
The length filed in the chsc response block (if valid)
has a value of n*(sizeof(chp_desc))+8 (for the response
block header). When we memcopied from the response block
to the actual descriptor we copied 8 bytes too much.
The bug was not revealed since the descriptor is embedded
in struct channel_path.
Since we only write one descriptor at a time ignore the
length value and use sizeof(*desc).
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Stefan Haberland [Mon, 19 Jul 2010 07:22:36 +0000 (09:22 +0200)]
[S390] add missing device put
The dasd_alias_show function does not return a device reference
in case the device is an alias.
Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Peter Oberparleiter [Mon, 19 Jul 2010 07:22:35 +0000 (09:22 +0200)]
[S390] dasd: use correct label location for diag fba disks
Partition boundary calculation fails for DASD FBA disks under the
following conditions:
- disk is formatted with CMS FORMAT with a blocksize of more than
512 bytes
- all of the disk is reserved to a single CMS file using CMS RESERVE
- the disk is accessed using the DIAG mode of the DASD driver
Under these circumstances, the partition detection code tries to
read the CMS label block containing partition-relevant information
from logical block offset 1, while it is in fact located at physical
block offset 1.
Fix this problem by using the correct CMS label block location
depending on the device type as determined by the DASD SENSE ID
information.
Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Dave Chinner [Mon, 19 Jul 2010 04:56:17 +0000 (14:56 +1000)]
mm: add context argument to shrinker callback
The current shrinker implementation requires the registered callback
to have global state to work from. This makes it difficult to shrink
caches that are not global (e.g. per-filesystem caches). Pass the shrinker
structure to the callback so that users can embed the shrinker structure
in the context the shrinker needs to operate on and get back to it in the
callback via container_of().
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Linus Torvalds [Sun, 18 Jul 2010 22:13:30 +0000 (15:13 -0700)]
Merge branch 'x86/kprobes' of git://git./linux/kernel/git/frob/linux-2.6-roland
* 'x86/kprobes' of git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-roland:
x86: kprobes: fix swapped segment registers in kretprobe
Roland McGrath [Sat, 17 Jul 2010 01:17:12 +0000 (18:17 -0700)]
x86: kprobes: fix swapped segment registers in kretprobe
In commit
f007ea26, the order of the %es and %ds segment registers
got accidentally swapped, so synthesized 'struct pt_regs' frames
have the two values inverted. It's almost sure that these values
never matter, and that they also never differ. But wrong is wrong.
Signed-off-by: Roland McGrath <roland@redhat.com>
Linus Torvalds [Sun, 18 Jul 2010 22:05:22 +0000 (15:05 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
PCI: fall back to original BIOS BAR addresses
Arnaud Ebalard [Fri, 16 Jul 2010 00:38:44 +0000 (00:38 +0000)]
IPv6: fix CoA check in RH2 input handler (mip6_rthdr_input())
The input handler for Type 2 Routing Header (mip6_rthdr_input())
checks if the CoA in the packet matches the CoA in the XFRM state.
Current check is buggy: it compares the adddress in the Type 2
Routing Header, i.e. the HoA, against the expected CoA in the state.
The comparison should be made against the address in the destination
field of the IPv6 header.
The bug remained unnoticed because the main (and possibly only current)
user of the code (UMIP MIPv6 Daemon) initializes the XFRM state with the
unspecified address, i.e. explicitly allows everything.
Yoshifuji-san, can you ack that one?
Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sun, 18 Jul 2010 17:09:25 +0000 (10:09 -0700)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jlbec/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
ocfs2: Silence gcc warning in ocfs2_write_zero_page().
jbd2/ocfs2: Fix block checksumming when a buffer is used in several transactions
ocfs2/dlm: Remove BUG_ON from migration in the rare case of a down node
ocfs2: Don't duplicate pages past i_size during CoW.
ocfs2: tighten up strlen() checking
ocfs2: Make xattr reflink work with new local alloc reservation.
ocfs2: make xattr extension work with new local alloc reservation.
ocfs2: Remove the redundant cpu_to_le64.
ocfs2/dlm: don't access beyond bitmap size
ocfs2: No need to zero pages past i_size.
ocfs2: Zero the tail cluster when extending past i_size.
ocfs2: When zero extending, do it by page.
ocfs2: Limit default local alloc size within bitmap range.
ocfs2: Move orphan scan work to ocfs2_wq.
fs/ocfs2/dlm: Add missing spin_unlock
Linus Torvalds [Sun, 18 Jul 2010 16:44:37 +0000 (09:44 -0700)]
drm/i915: add 'reclaimable' to i915 self-reclaimable page allocations
The hibernate issues that got fixed in commit
985b823b9192 ("drm/i915:
fix hibernation since i915 self-reclaim fixes") turn out to have been
incomplete. Vefa Bicakci tested lots of hibernate cycles, and without
the __GFP_RECLAIMABLE flag the system eventually fails to resume.
With the flag added, Vefa can apparently hibernate forever (or until he
gets bored running his automated scripts, whichever comes first).
The reclaimable flag was there originally, and was one of the flags that
were dropped (unintentionally) by commit
4bdadb978569 ("drm/i915:
Selectively enable self-reclaim") that introduced all these problems,
but I didn't want to just blindly add back all the flags in commit
985b823b9192, and it looked like __GFP_RECLAIM wasn't necessary. It
clearly was.
I still suspect that there is some subtle reason we're missing that
causes the problems, but __GFP_RECLAIMABLE is certainly not wrong to use
in this context, and is what the code historically used. And we have no
idea what the causes the corruption without it.
Reported-and-tested-by: M. Vefa Bicakci <bicave@superonline.com>
Cc: Dave Airlie <airlied@gmail.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Brown [Sat, 17 Jul 2010 13:20:17 +0000 (14:20 +0100)]
ASoC: Remove duplicate AUX definition from WM8776
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Cc: stable@kernel.org
Jacob Pan [Fri, 16 Jul 2010 18:58:26 +0000 (11:58 -0700)]
x86, pci, mrst: Add extra sanity check in walking the PCI extended cap chain
The fixed bar capability structure is searched in PCI extended
configuration space. We need to make sure there is a valid capability
ID to begin with otherwise, the search code may stuck in a infinite
loop which results in boot hang. This patch adds additional check for
cap ID 0, which is also invalid, and indicates end of chain.
End of chain is supposed to have all fields zero, but that doesn't
seem to always be the case in the field.
Suggested-by: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
LKML-Reference: <
1279306706-27087-1-git-send-email-jacob.jun.pan@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Yinghai Lu [Thu, 15 Jul 2010 07:00:59 +0000 (00:00 -0700)]
x86: Fix x2apic preenabled system with kexec
Found one x2apic system kexec loop test failed
when CONFIG_NMI_WATCHDOG=y (old) or CONFIG_LOCKUP_DETECTOR=y (current tip)
first kernel can kexec second kernel, but second kernel can not kexec third one.
it can be duplicated on another system with BIOS preenabled x2apic.
First kernel can not kexec second kernel.
It turns out, when kernel boot with pre-enabled x2apic, it will not execute
disable_local_APIC on shutdown path.
when init_apic_mappings() is called in setup_arch, it will skip setting of
apic_phys when x2apic_mode is set. ( x2apic_mode is much early check_x2apic())
Then later, disable_local_APIC() will bail out early because !apic_phys.
So check !x2apic_mode in x2apic_mode in disable_local_APIC with !apic_phys.
another solution could be updating init_apic_mappings() to set apic_phys even
for preenabled x2apic system. Actually even for x2apic system, that lapic
address is mapped already in early stage.
BTW: is there any x2apic preenabled system with apicid of boot cpu > 255?
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
4C3EB22B.3000701@kernel.org>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: stable@kernel.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Joel Becker [Fri, 16 Jul 2010 20:32:33 +0000 (13:32 -0700)]
ocfs2: Silence gcc warning in ocfs2_write_zero_page().
ocfs2_write_zero_page() has a loop that won't ever be skipped, but gcc
doesn't know that. Set ret=0 just to make gcc happy.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Robert Jennings [Fri, 16 Jul 2010 04:57:25 +0000 (04:57 +0000)]
ibmveth: lost IRQ while closing/opening device leads to service loss
The order of freeing the IRQ and freeing the device in firmware
in ibmveth_close can cause the adapter to become unusable after a
subsequent ibmveth_open. Only a reboot of the OS will make the
network device usable again. This is seen when cycling the adapter
up and down while there is network activity.
There is a window where an IRQ will be left unserviced (H_EOI will not
be called). The solution is to make a VIO_IRQ_DISABLE h_call, free the
device with firmware, and then call free_irq.
Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 16 Jul 2010 19:41:44 +0000 (12:41 -0700)]
Merge branch 'vhost-net' of git://git./linux/kernel/git/mst/vhost
Bjorn Helgaas [Thu, 15 Jul 2010 15:41:42 +0000 (09:41 -0600)]
PCI: fall back to original BIOS BAR addresses
If we fail to assign resources to a PCI BAR, this patch makes us try the
original address from BIOS rather than leaving it disabled.
Linux tries to make sure all PCI device BARs are inside the upstream
PCI host bridge or P2P bridge apertures, reassigning BARs if necessary.
Windows does similar reassignment.
Before this patch, if we could not move a BAR into an aperture, we left
the resource unassigned, i.e., at address zero. Windows leaves such BARs
at the original BIOS addresses, and this patch makes Linux do the same.
This is a bit ugly because we disable the resource long before we try to
reassign it, so we have to keep track of the BIOS BAR address somewhere.
For lack of a better place, I put it in the struct pci_dev.
I think it would be cleaner to attempt the assignment immediately when the
claim fails, so we could easily remember the original address. But we
currently claim motherboard resources in the middle, after attempting to
claim PCI resources and before assigning new PCI resources, and changing
that is a fairly big job.
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=16263
Reported-by: Andrew <nitr0@seti.kr.ua>
Tested-by: Andrew <nitr0@seti.kr.ua>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Linus Torvalds [Fri, 16 Jul 2010 18:26:33 +0000 (11:26 -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:
tracing: Add alignment to syscall metadata declarations
perf: Sync callchains with period based hits
perf: Resurrect flat callchains
perf: Version String fix, for fallback if not from git
perf: Version String fix, using kernel version
Stephen Boyd [Fri, 16 Jul 2010 16:50:10 +0000 (09:50 -0700)]
rt2x00: Fix lockdep warning in rt2x00lib_probe_dev()
The rt2x00dev->intf_work workqueue is never initialized when a driver is
probed for a non-existent device (in this case rt2500usb). On such a
path we call rt2x00lib_remove_dev() to free any resources initialized
during the probe before we use INIT_WORK to initialize the workqueue.
This causes lockdep to get confused since the lock used in the workqueue
hasn't been initialized yet but is now being acquired during
cancel_work_sync() called by rt2x00lib_remove_dev().
Fix this by initializing the workqueue first before we attempt to probe
the device. This should make lockdep happy and avoid breaking any
assumptions about how the library cleans up after a probe fails.
phy0 -> rt2x00lib_probe_dev: Error - Failed to allocate device.
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
Pid: 2027, comm: modprobe Not tainted 2.6.35-rc5+ #60
Call Trace:
[<
ffffffff8105fe59>] register_lock_class+0x152/0x31f
[<
ffffffff81344a00>] ? usb_control_msg+0xd5/0x111
[<
ffffffff81061bde>] __lock_acquire+0xce/0xcf4
[<
ffffffff8105f6fd>] ? trace_hardirqs_off+0xd/0xf
[<
ffffffff81492aef>] ? _raw_spin_unlock_irqrestore+0x33/0x41
[<
ffffffff810628d5>] lock_acquire+0xd1/0xf7
[<
ffffffff8104f037>] ? __cancel_work_timer+0x99/0x17e
[<
ffffffff8104f06e>] __cancel_work_timer+0xd0/0x17e
[<
ffffffff8104f037>] ? __cancel_work_timer+0x99/0x17e
[<
ffffffff8104f136>] cancel_work_sync+0xb/0xd
[<
ffffffffa0096675>] rt2x00lib_remove_dev+0x25/0xb0 [rt2x00lib]
[<
ffffffffa0096bf7>] rt2x00lib_probe_dev+0x380/0x3ed [rt2x00lib]
[<
ffffffff811d78a7>] ? __raw_spin_lock_init+0x31/0x52
[<
ffffffffa00bbd2c>] ? T.676+0xe/0x10 [rt2x00usb]
[<
ffffffffa00bbe4f>] rt2x00usb_probe+0x121/0x15e [rt2x00usb]
[<
ffffffff813468bd>] usb_probe_interface+0x151/0x19e
[<
ffffffff812ea08e>] driver_probe_device+0xa7/0x136
[<
ffffffff812ea167>] __driver_attach+0x4a/0x66
[<
ffffffff812ea11d>] ? __driver_attach+0x0/0x66
[<
ffffffff812e96ca>] bus_for_each_dev+0x54/0x89
[<
ffffffff812e9efd>] driver_attach+0x19/0x1b
[<
ffffffff812e9b64>] bus_add_driver+0xb4/0x204
[<
ffffffff812ea41b>] driver_register+0x98/0x109
[<
ffffffff813465dd>] usb_register_driver+0xb2/0x173
[<
ffffffffa00ca000>] ? rt2500usb_init+0x0/0x20 [rt2500usb]
[<
ffffffffa00ca01e>] rt2500usb_init+0x1e/0x20 [rt2500usb]
[<
ffffffff81000203>] do_one_initcall+0x6d/0x17a
[<
ffffffff8106cae8>] sys_init_module+0x9c/0x1e0
[<
ffffffff8100296b>] system_call_fastpath+0x16/0x1b
Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Sage Weil [Thu, 15 Jul 2010 21:58:39 +0000 (14:58 -0700)]
ceph: do not include cap/dentry releases in replayed messages
Strip the cap and dentry releases from replayed messages. They can
cause the shared state to get out of sync because they were generated
(with the request message) earlier, and no longer reflect the current
client state.
Signed-off-by: Sage Weil <sage@newdream.net>
Sage Weil [Thu, 15 Jul 2010 20:24:32 +0000 (13:24 -0700)]
ceph: reuse request message when replaying against recovering mds
Replayed rename operations (after an mds failure/recovery) were broken
because the request paths were regenerated from the dentry names, which
get mangled when d_move() is called.
Instead, resend the previous request message when replaying completed
operations. Just make sure the REPLAY flag is set and the target ino is
filled in.
This fixes problems with workloads doing renames when the MDS restarts,
where the rename operation appears to succeed, but on mds restart then
fails (leading to client confusion, app breakage, etc.).
Signed-off-by: Sage Weil <sage@newdream.net>
Linus Torvalds [Fri, 16 Jul 2010 15:23:10 +0000 (08:23 -0700)]
Merge git://git./linux/kernel/git/steve/gfs2-2.6-fixes
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
GFS2: rename causes kernel Oops
GFS2: BUG in gfs2_adjust_quota
GFS2: Fix kernel NULL pointer dereference by dlm_astd
GFS2: recovery stuck on transaction lock
GFS2: O_TRUNC not working on stuffed files across cluster
Linus Torvalds [Fri, 16 Jul 2010 15:22:40 +0000 (08:22 -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: w90p910_ts - fix call to setup_timer()
Input: synaptics - fix wrong dimensions check
Input: i8042 - mark stubs in i8042.h "static inline"
Michael S. Tsirkin [Thu, 24 Jun 2010 14:10:25 +0000 (17:10 +0300)]
vhost: avoid pr_err on condition guest can trigger
Guest can trigger packet truncation by posting
a very short buffer and disabling buffer merging.
Convert pr_err to pr_debug to avoid log from filling
up when this happens.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Wan ZongShun [Fri, 16 Jul 2010 06:28:57 +0000 (23:28 -0700)]
Input: w90p910_ts - fix call to setup_timer()
No need to take address, w90p910_ts is already a pointer.
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Ben Greear [Thu, 15 Jul 2010 13:22:33 +0000 (13:22 +0000)]
ipmr: Don't leak memory if fib lookup fails.
This was detected using two mcast router tables. The
pimreg for the second interface did not have a specific
mrule, so packets received by it were handled by the
default table, which had nothing configured.
This caused the ipmr_fib_lookup to fail, causing
the memory leak.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 16 Jul 2010 03:25:44 +0000 (20:25 -0700)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: skcipher - avoid NULL dereference
Alex Deucher [Thu, 15 Jul 2010 14:51:10 +0000 (10:51 -0400)]
drm/radeon/kms: fix gtt MC base alignment on rs4xx/rs690/rs740 asics
The asics in question have the following requirements with regard to
their gart setups:
1. The GART aperture size has to be in the form of 2^X bytes, where X is from 25 to 31
2. The GART aperture MC base has to be aligned to a boundary equal to the size of the
aperture.
3. The GART page table has to be aligned to the boundary equal to the size of the table.
4. The GART page table size is: table_entry_size * (aperture_size / page_size)
5. The GART page table has to be allocated in non-paged, non-cached, contiguous system
memory.
This patch takes care 2. The rest should already be handled properly.
This fixes a regression noticed by: Torsten Kaiser <just.for.lkml@googlemail.com>
Tested-by: Torsten Kaiser <just.for.lkml@googlemail.com>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Jan Kara [Wed, 14 Jul 2010 05:56:33 +0000 (07:56 +0200)]
jbd2/ocfs2: Fix block checksumming when a buffer is used in several transactions
OCFS2 uses t_commit trigger to compute and store checksum of the just
committed blocks. When a buffer has b_frozen_data, checksum is computed
for it instead of b_data but this can result in an old checksum being
written to the filesystem in the following scenario:
1) transaction1 is opened
2) handle1 is opened
3) journal_access(handle1, bh)
- This sets jh->b_transaction to transaction1
4) modify(bh)
5) journal_dirty(handle1, bh)
6) handle1 is closed
7) start committing transaction1, opening transaction2
8) handle2 is opened
9) journal_access(handle2, bh)
- This copies off b_frozen_data to make it safe for transaction1 to commit.
jh->b_next_transaction is set to transaction2.
10) jbd2_journal_write_metadata() checksums b_frozen_data
11) the journal correctly writes b_frozen_data to the disk journal
12) handle2 is closed
- There was no dirty call for the bh on handle2, so it is never queued for
any more journal operation
13) Checkpointing finally happens, and it just spools the bh via normal buffer
writeback. This will write b_data, which was never triggered on and thus
contains a wrong (old) checksum.
This patch fixes the problem by calling the trigger at the moment data is
frozen for journal commit - i.e., either when b_frozen_data is created by
do_get_write_access or just before we write a buffer to the log if
b_frozen_data does not exist. We also rename the trigger to t_frozen as
that better describes when it is called.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Wengang Wang [Wed, 14 Jul 2010 14:38:21 +0000 (22:38 +0800)]
ocfs2/dlm: Remove BUG_ON from migration in the rare case of a down node
For migration, we are waiting for DLM_LOCK_RES_MIGRATING flag to be set
before sending DLM_MIG_LOCKRES_MSG message to the target. We are using
dlm_migration_can_proceed() for that purpose. However, if the node is
down, dlm_migration_can_proceed() will also return "go ahead". In this
rare case, the DLM_LOCK_RES_MIGRATING flag might not be set yet. Remove
the BUG_ON() that trips over this condition.
Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Tao Ma [Wed, 14 Jul 2010 03:19:32 +0000 (11:19 +0800)]
ocfs2: Don't duplicate pages past i_size during CoW.
During CoW, the pages after i_size don't contain valid data, so there's
no need to read and duplicate them.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Thomas Gleixner [Wed, 14 Jul 2010 19:36:27 +0000 (21:36 +0200)]
x86: Force HPET readback_cmp for all ATI chipsets
commit
30a564be (x86, hpet: Restrict read back to affected ATI
chipset) restricted the workaround for the HPET bug to SMX00
chipsets. This was reasonable as those were the only ones against
which we ever got a bug report.
Stephan Wolf reported now that this patch breaks his IXP400 based
machine. Though it's confirmed to work on other IXP400 based systems.
To error out on the safe side, we force the HPET readback workaround
for all ATI SMbus class chipsets.
Reported-by: Stephan Wolf <stephan@letzte-bankreihe.de>
LKML-Reference: <alpine.LFD.2.00.
1007142134140.3321@localhost.localdomain>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Stephan Wolf <stephan@letzte-bankreihe.de>
Acked-by: Borislav Petkov <borislav.petkov@amd.com>
Michael S. Tsirkin [Thu, 15 Jul 2010 12:19:12 +0000 (15:19 +0300)]
vhost-net: avoid flush under lock
We flush under vq mutex when changing backends.
This creates a deadlock as workqueue being flushed
needs this lock as well.
https://bugzilla.redhat.com/show_bug.cgi?id=612421
Drop the vq mutex before flush: we have the device mutex
which is sufficient to prevent another ioctl from touching
the vq.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Bob Peterson [Wed, 14 Jul 2010 22:12:26 +0000 (18:12 -0400)]
GFS2: rename causes kernel Oops
This patch fixes a kernel Oops in the GFS2 rename code.
The problem was in the way the gfs2 directory code was trying
to re-use sentinel directory entries.
In the failing case, gfs2's rename function was renaming a
file to another name that had the same non-trivial length.
The file being renamed happened to be the first directory
entry on the leaf block.
First, the rename code (gfs2_rename in ops_inode.c) found the
original directory entry and decided it could do its job by
simply replacing the directory entry with another. Therefore
it determined correctly that no block allocations were needed.
Next, the rename code deleted the old directory entry prior to
replacing it with the new name. Therefore, the soon-to-be
replaced directory entry was temporarily made into a directory
entry "sentinel" or a place holder at the start of a leaf block.
Lastly, it went to re-add the replacement directory entry in
that leaf block. However, when gfs2_dirent_find_space was
looking for space in the leaf block, it used the wrong value
for the sentinel. That threw off its calculations so later
it decides it can't really re-use the sentinel and therefore
must allocate a new leaf block. But because it previously decided
to re-use the directory entry, it didn't waste the time to
grab a new block allocation for the inode. Therefore, the
inode's i_alloc pointer was still NULL and it crashes trying to
reference it.
In the case of sentinel directory entries, the entire dirent is
reused, not just the "free space" portion of it, and therefore
the function gfs2_dirent_find_space should use the value 0
rather than GFS2_DIRENT_SIZE(0) for the actual dirent size.
Fixing this calculation enables the reproducer programs to work
properly.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Abhijith Das [Sun, 4 Jul 2010 05:33:24 +0000 (01:33 -0400)]
GFS2: BUG in gfs2_adjust_quota
HighMem pages on i686 do not get mapped to the buffer_heads and this was
causing a NULL pointer dereference when we were trying to memset page buffers
to zero.
We now use zero_user() that kmaps the page and directly manipulates page data.
This patch also fixes a boundary condition that was incorrect.
Signed-off-by: Abhi Das <adas@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Bob Peterson [Thu, 17 Jun 2010 20:45:37 +0000 (16:45 -0400)]
GFS2: Fix kernel NULL pointer dereference by dlm_astd
This patch fixes a problem in an error path when looking
up dinodes. There are two sister-functions, gfs2_inode_lookup
and gfs2_process_unlinked_inode. Both functions acquire and
hold the i_iopen glock for the dinode being looked up. The last
thing they try to do is hold the i_gl glock for the dinode.
If that glock fails for some reason, the error path was
incorrectly calling gfs2_glock_put for the i_iopen glock twice.
This resulted in the glock being prematurely freed. The
"minimum hold time" usually kept the glock in memory, but the
lock interface to dlm (aka lock_dlm) freed its memory for the
glock. In some circumstances, it would cause dlm's dlm_astd daemon
to try to call the bast function for the freed lock_dlm memory,
which resulted in a NULL pointer dereference.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Bob Peterson [Wed, 23 Jun 2010 15:44:47 +0000 (11:44 -0400)]
GFS2: recovery stuck on transaction lock
This patch fixes bugzilla bug #590878: GFS2: recovery stuck on
transaction lock. We set the frozen flag on the glock when we receive
a completion that cannot be delivered due to blocked locks. At that
point we check to see whether the first waiting holder has the noexp
flag set. If the noexp lock is queued later, then we need to unfreeze
the glock at that point in time, namely, in the glock work function.
This patch was originally written by Steve Whitehouse, but since
he's on holiday, I'm submitting it. It's been well tested with a
complex recovery test called revolver.
Signed-off-by: Steve Whitehouse <swhiteho@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Bob Peterson [Thu, 24 Jun 2010 23:15:09 +0000 (19:15 -0400)]
GFS2: O_TRUNC not working on stuffed files across cluster
This patch replaces a statement that got dropped out by accident.
Without the patch, truncates on stuffed (very small) files cause
those files to have an unpredictable size.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
David S. Miller [Thu, 15 Jul 2010 05:59:00 +0000 (22:59 -0700)]
perf: Add DWARF register lookup for sparc
Signed-off-by: David S. Miller <davem@davemloft.net>
Tom Herbert [Thu, 15 Jul 2010 03:50:29 +0000 (20:50 -0700)]
net: fix problem in reading sock TX queue
Fix problem in reading the tx_queue recorded in a socket. In
dev_pick_tx, the TX queue is read by doing a check with
sk_tx_queue_recorded on the socket, followed by a sk_tx_queue_get.
The problem is that there is not mutual exclusion across these
calls in the socket so it it is possible that the queue in the
sock can be invalidated after sk_tx_queue_recorded is called so
that sk_tx_queue get returns -1, which sets 65535 in queue_index
and thus dev_pick_tx returns 65536 which is a bogus queue and
can cause crash in dev_queue_xmit.
We fix this by only calling sk_tx_queue_get which does the proper
checks. The interface is that sk_tx_queue_get returns the TX queue
if the sock argument is non-NULL and TX queue is recorded, else it
returns -1. sk_tx_queue_recorded is no longer used so it can be
completely removed.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Doug Kehn [Thu, 15 Jul 2010 01:02:16 +0000 (18:02 -0700)]
net/core: neighbour update Oops
When configuring DMVPN (GRE + openNHRP) and a GRE remote
address is configured a kernel Oops is observed. The
obserseved Oops is caused by a NULL header_ops pointer
(neigh->dev->header_ops) in neigh_update_hhs() when
void (*update)(struct hh_cache*, const struct net_device*, const unsigned char *)
= neigh->dev->header_ops->cache_update;
is executed. The dev associated with the NULL header_ops is
the GRE interface. This patch guards against the
possibility that header_ops is NULL.
This Oops was first observed in kernel version 2.6.26.8.
Signed-off-by: Doug Kehn <rdkehn@yahoo.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 15 Jul 2010 00:28:13 +0000 (17:28 -0700)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: 6226/1: fix kprobe bug in ldr instruction emulation
ARM: Update mach-types
ARM: lockdep: fix unannotated irqs-on
ARM: 6184/2: ux500: use neutral PRCMU base
ARM: 6212/1: atomic ops: add memory constraints to inline asm
ARM: 6211/1: atomic ops: fix register constraints for atomic64_add_unless
ARM: 6210/1: Do not rely on reset defaults of L2X0_AUX_CTRL
Linus Torvalds [Thu, 15 Jul 2010 00:27:44 +0000 (17:27 -0700)]
Merge branch 'lmb-to-memblock' of git://git./linux/kernel/git/benh/powerpc
* 'lmb-to-memblock' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
lmb: rename to memblock
Linus Torvalds [Thu, 15 Jul 2010 00:27:29 +0000 (17:27 -0700)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/fsl-booke: Fix address issue when using relocatable kernels
powerpc/cpm1: Mark micropatch code/data static and __init
powerpc/cpm1: Fix build with various CONFIG_*_UCODE_PATCH combinations
powerpc/cpm: Reintroduce global spi_pram struct (fixes build issue)
Eric Dumazet [Tue, 13 Jul 2010 05:24:20 +0000 (05:24 +0000)]
net: skb_tx_hash() fix relative to skb_orphan_try()
commit
fc6055a5ba31e2 (net: Introduce skb_orphan_try()) added early
orphaning of skbs.
This unfortunately added a performance regression in skb_tx_hash() in
case of stacked devices (bonding, vlans, ...)
Since skb->sk is now NULL, we cannot access sk->sk_hash anymore to
spread tx packets to multiple NIC queues on multiqueue devices.
skb_tx_hash() in this case only uses skb->protocol, same value for all
flows.
skb_orphan_try() can copy sk->sk_hash into skb->rxhash and skb_tx_hash()
can use this saved sk_hash value to compute its internal hash value.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nicolas Pitre [Wed, 14 Jul 2010 04:21:22 +0000 (05:21 +0100)]
ARM: 6226/1: fix kprobe bug in ldr instruction emulation
From: Bin Yang <bin.yang@marvell.com>
Cc: stable@kernel.org
Signed-off-by: Bin Yang <bin.yang@marvell.com>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Changli Gao [Mon, 12 Jul 2010 21:00:12 +0000 (21:00 +0000)]
rfs: call sock_rps_record_flow() in tcp_splice_read()
rfs: call sock_rps_record_flow() in tcp_splice_read()
call sock_rps_record_flow() in tcp_splice_read(), so the applications using
splice(2) or sendfile(2) can utilize RFS.
Signed-off-by: Changli Gao <xiaosuo@gmail.com>
----
net/ipv4/tcp.c | 1 +
1 file changed, 1 insertion(+)
Signed-off-by: David S. Miller <davem@davemloft.net>
Timo Teräs [Mon, 12 Jul 2010 21:29:42 +0000 (21:29 +0000)]
xfrm: do not assume that template resolving always returns xfrms
xfrm_resolve_and_create_bundle() assumed that, if policies indicated
presence of xfrms, bundle template resolution would always return
some xfrms. This is not true for 'use' level policies which can
result in no xfrm's being applied if there is no suitable xfrm states.
This fixes a crash by this incorrect assumption.
Reported-by: George Spelvin <linux@horizon.com>
Bisected-by: George Spelvin <linux@horizon.com>
Tested-by: George Spelvin <linux@horizon.com>
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>