Linus Torvalds [Thu, 16 Jan 2014 01:26:44 +0000 (08:26 +0700)]
Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fix from Guenter Roeck:
"Fix attribute length problem in coretemp driver"
* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (coretemp) Fix truncated name of alarm attributes
Linus Torvalds [Wed, 15 Jan 2014 08:42:11 +0000 (15:42 +0700)]
Merge branch 'akpm' (incoming from Andrew)
Merge patches from Andrew Morton:
"Six fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
lib/percpu_counter.c: fix __percpu_counter_add()
crash_dump: fix compilation error (on MIPS at least)
mm: fix crash when using XFS on loopback
MIPS: fix blast_icache32 on loongson2
MIPS: fix case mismatch in local_r4k_flush_icache_range()
nilfs2: fix segctor bug that causes file system corruption
Linus Torvalds [Wed, 15 Jan 2014 08:07:36 +0000 (15:07 +0700)]
Merge tag 'md/3.13-fixes' of git://neil.brown.name/md
Pull late md fixes from Neil Brown:
"Half a dozen md bug fixes.
All of these fix real bugs the people have hit, and are tagged for
-stable. Sorry they are late .... Christmas holidays and all that.
Hopefully they can still squeak into 3.13"
* tag 'md/3.13-fixes' of git://neil.brown.name/md:
md: fix problem when adding device to read-only array with bitmap.
md/raid10: fix bug when raid10 recovery fails to recover a block.
md/raid5: fix a recently broken BUG_ON().
md/raid1: fix request counting bug in new 'barrier' code.
md/raid10: fix two bugs in handling of known-bad-blocks.
md/raid5: Fix possible confusion when multiple write errors occur.
Linus Torvalds [Wed, 15 Jan 2014 08:06:14 +0000 (15:06 +0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"One nouveau regression fix on older cards, i915 black screen fixes,
and a revert for a strange G33 intel problem"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/nouveau: fix null ptr dereferences on some boards
Revert "drm: copy mode type in drm_mode_connector_list_update()"
drm/i915/bdw: make sure south port interrupts are enabled properly v2
drm/i915: Don't grab crtc mutexes in intel_modeset_gem_init()
drm/i915: fix DDI PLLs HW state readout code
Ming Lei [Wed, 15 Jan 2014 01:56:42 +0000 (17:56 -0800)]
lib/percpu_counter.c: fix __percpu_counter_add()
__percpu_counter_add() may be called in softirq/hardirq handler (such
as, blk_mq_queue_exit() is typically called in hardirq/softirq handler),
so we need to call this_cpu_add()(irq safe helper) to update percpu
counter, otherwise counts may be lost.
This fixes the problem that 'rmmod null_blk' hangs in blk_cleanup_queue()
because of miscounting of request_queue->mq_usage_counter.
This patch is the v1 of previous one of "lib/percpu_counter.c:
disable local irq when updating percpu couter", and takes Andrew's
approach which may be more efficient for ARCHs(x86, s390) that
have optimized this_cpu_add().
Signed-off-by: Ming Lei <tom.leiming@gmail.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Shaohua Li <shli@fusionio.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Fan Du <fan.du@windriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mikulas Patocka [Wed, 15 Jan 2014 01:56:40 +0000 (17:56 -0800)]
mm: fix crash when using XFS on loopback
Commit 8456a648cf44 ("slab: use struct page for slab management") causes
a crash in the LVM2 testsuite on PA-RISC (the crashing test is
fsadm.sh). The testsuite doesn't crash on 3.12, crashes on 3.13-rc1 and
later.
Kernel panic - not syncing: Bad Address (null pointer deref?)
Commit 8456a648cf44 changes the page structure so that the slab
subsystem reuses the page->mapping field.
The crash happens in the following way:
* XFS allocates some memory from slab and issues a bio to read data
into it.
* the bio is sent to the loopback device.
* lo_receive creates an actor and calls splice_direct_to_actor.
* lo_splice_actor copies data to the target page.
* lo_splice_actor calls flush_dcache_page because the page may be
mapped by userspace. In that case we need to flush the kernel cache.
* flush_dcache_page asks for the list of userspace mappings, however
that page->mapping field is reused by the slab subsystem for a
different purpose. This causes the crash.
Note that other architectures without coherent caches (sparc, arm, mips)
also call page_mapping from flush_dcache_page, so they may crash in the
same way.
This patch fixes this bug by testing if the page is a slab page in
page_mapping and returning NULL if it is.
The patch also fixes VM_BUG_ON(PageSlab(page)) that could happen in
earlier kernels in the same scenario on architectures without cache
coherence when CONFIG_DEBUG_VM is enabled - so it should be backported
to stable kernels.
In the old kernels, the function page_mapping is placed in
include/linux/mm.h, so you should modify the patch accordingly when
backporting it.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Cc: John David Anglin <dave.anglin@bell.net>] Cc: Andi Kleen <ak@linux.intel.com> Cc: Christoph Lameter <cl@linux.com> Acked-by: Pekka Enberg <penberg@kernel.org> Reviewed-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Helge Deller <deller@gmx.de> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Aaro Koskinen [Wed, 15 Jan 2014 01:56:38 +0000 (17:56 -0800)]
MIPS: fix blast_icache32 on loongson2
Commit 14bd8c082016 ("MIPS: Loongson: Get rid of Loongson 2 #ifdefery
all over arch/mips") failed to add Loongson2 specific blast_icache32
functions. Fix that.
The patch fixes the following crash seen with 3.13-rc1:
Huacai Chen [Wed, 15 Jan 2014 01:56:37 +0000 (17:56 -0800)]
MIPS: fix case mismatch in local_r4k_flush_icache_range()
Currently, Loongson-2 call protected_blast_icache_range() and others
call protected_loongson23_blast_icache_range(), but I think the correct
behavior should be the opposite. BTW, Loongson-3's cache-ops is
compatible with MIPS64, but not compatible with Loongson-2. So, rename
xxx_loongson23_yyy things to xxx_loongson2_yyy.
The patch fixes early boot hang with 3.13-rc1, introduced in commit 14bd8c082016 ("MIPS: Loongson: Get rid of Loongson 2 #ifdefery all over
arch/mips").
Signed-off-by: Huacai Chen <chenhc@lemote.com> Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Acked-by: John Crispin <blogic@openwrt.org> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andreas Rohner [Wed, 15 Jan 2014 01:56:36 +0000 (17:56 -0800)]
nilfs2: fix segctor bug that causes file system corruption
There is a bug in the function nilfs_segctor_collect, which results in
active data being written to a segment, that is marked as clean. It is
possible, that this segment is selected for a later segment
construction, whereby the old data is overwritten.
The problem shows itself with the following kernel log message:
nilfs_sufile_do_cancel_free: segment 6533 must be clean
Usually a few hours later the file system gets corrupted:
The issue can be reproduced with a file system that is nearly full and
with the cleaner running, while some IO intensive task is running.
Although it is quite hard to reproduce.
This is what happens:
1. The cleaner starts the segment construction
2. nilfs_segctor_collect is called
3. sc_stage is on NILFS_ST_SUFILE and segments are freed
4. sc_stage is on NILFS_ST_DAT current segment is full
5. nilfs_segctor_extend_segments is called, which
allocates a new segment
6. The new segment is one of the segments freed in step 3
7. nilfs_sufile_cancel_freev is called and produces an error message
8. Loop around and the collection starts again
9. sc_stage is on NILFS_ST_SUFILE and segments are freed
including the newly allocated segment, which will contain active
data and can be allocated at a later time
10. A few hours later another segment construction allocates the
segment and causes file system corruption
This can be prevented by simply reordering the statements. If
nilfs_sufile_cancel_freev is called before nilfs_segctor_extend_segments
the freed segments are marked as dirty and cannot be allocated any more.
Signed-off-by: Andreas Rohner <andreas.rohner@gmx.net> Reviewed-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Tested-by: Andreas Rohner <andreas.rohner@gmx.net> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jean Delvare [Tue, 14 Jan 2014 14:59:55 +0000 (15:59 +0100)]
hwmon: (coretemp) Fix truncated name of alarm attributes
When the core number exceeds 9, the size of the buffer storing the
alarm attribute name is insufficient and the attribute name is
truncated. This causes libsensors to skip these attributes as the
truncated name is not recognized.
Reported-by: Andreas Hollmann <hollmann@in.tum.de> Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: stable@vger.kernel.org Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Stephen Warren [Mon, 13 Jan 2014 21:29:04 +0000 (14:29 -0700)]
i2c: Re-instate body of i2c_parent_is_i2c_adapter()
The body of i2c_parent_is_i2c_adapter() is currently guarded by
I2C_MUX. It should be CONFIG_I2C_MUX instead.
Among potentially other problems, this resulted in i2c_lock_adapter()
only locking I2C mux child adapters, and not the parent adapter. In
turn, this could allow inter-mingling of mux child selection and I2C
transactions, which could result in I2C transactions being directed to
the wrong I2C bus, and possibly even switching between busses in the
middle of a transaction.
One concrete issue caused by this bug was corrupted HDMI EDID reads
during boot on the NVIDIA Tegra Seaboard system, although this only
became apparent in recent linux-next, when the boot timing was changed
just enough to trigger the race condition.
Fixes: 3923172b3d70 ("i2c: reduce parent checking to a NOOP in non-I2C_MUX case") Cc: Phil Carmody <phil.carmody@partner.samsung.com> Cc: <stable@vger.kernel.org> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
NeilBrown [Wed, 11 Dec 2013 23:13:33 +0000 (10:13 +1100)]
md: fix problem when adding device to read-only array with bitmap.
If an array is started degraded, and then the missing device
is found it can be re-added and a minimal bitmap-based recovery
will bring it fully up-to-date.
If the array is read-only a recovery would not be allowed.
But also if the array is read-only and the missing device was
present very recently, then there could be no need for any
recovery at all, so we simply include the device in the read-only
array without any recovery.
However... if the missing device was removed a little longer ago
it could be missing some updates, but if a bitmap is present it will
be conditionally accepted pending a bitmap-based update. We don't
currently detect this case properly and will include that old
device into the read-only array with no recovery even though it really
needs a recovery.
This patch keeps track of whether a bitmap-based-recovery is really
needed or not in the new Bitmap_sync rdev flag. If that is set,
then the device will not be added to a read-only array.
added code to the "cannot recover this block" path to record a bad
block rather than fail the whole recovery.
Unfortunately this new case was placed *after* r10bio was freed rather
than *before*, yet it still uses r10bio.
This is will crash with a null dereference.
So move the freeing of r10bio down where it is safe.
simplified a BUG_ON, but removed too much so now it sometimes fires
when it shouldn't.
When the STRIPE_EXPANDING flag is set, the stripe_head might be on a
special list while multiple stripe_heads are collected, or it might
not be on any list, even a 'free' list when the refcount is zero. As
long as STRIPE_EXPANDING is set, it will be found and added back to a
list eventually.
So both of the BUG_ONs which test for the ->lru being empty or not
need to avoid the case where STRIPE_EXPANDING is set.
The patch which broke this was marked for -stable, so this patch needs
to be applied to any branch that received 6d183de4
Fixes: 6d183de4077191d1201283a9035ce57a9b05254d Cc: stable@vger.kernel.org (any release to which above was applied) Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Tue, 14 Jan 2014 00:56:14 +0000 (11:56 +1100)]
md/raid1: fix request counting bug in new 'barrier' code.
The new iobarrier implementation in raid1 (which keeps normal writes
and resync activity separate) counts every request what is not before
the current resync point in either next_window_requests or
current_window_requests.
It flags that the request is counted by setting ->start_next_window.
allow_barrier follows this model exactly and decrements one of the
*_window_requests if and only if ->start_next_window is set.
However wait_barrier(), which increments *_window_requests uses a
slightly different test for setting -.start_next_window (which is set
from the return value of this function).
So there is a possibility of the counts getting out of sync, and this
leads to the resync hanging.
So change wait_barrier() to return a non-zero value in exactly the
same cases that it increments *_window_requests.
But was introduced in 3.13-rc1.
Reported-by: Bruno Wolff III <bruno@wolff.to>
URL: https://bugzilla.kernel.org/show_bug.cgi?id=68061 Fixes: 79ef3a8aa1cb1523cc231c9a90a278333c21f761 Cc: majianpeng <majianpeng@gmail.com> Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Mon, 13 Jan 2014 23:38:09 +0000 (10:38 +1100)]
md/raid10: fix two bugs in handling of known-bad-blocks.
If we discover a bad block when reading we split the request and
potentially read some of it from a different device.
The code path of this has two bugs in RAID10.
1/ we get a spin_lock with _irq, but unlock without _irq!!
2/ The calculation of 'sectors_handled' is wrong, as can be clearly
seen by comparison with raid1.c
This leads to at least 2 warnings and a probable crash is a RAID10
ever had known bad blocks.
Fixed a crash in an overly simplistic way which could leave
R5_WriteError or R5_MadeGood set in the stripe cache for devices
for which it is no longer relevant.
When those devices are removed and spares added the flags are still
set and can cause incorrect behaviour.
Fixed the same bug if a more effective way, so we can now revert
the original commit.
Reported-and-tested-by: Alexander Lyakas <alex.bolshoy@gmail.com> Cc: stable@vger.kernel.org (3.2+ - 3.2 will need a different fix though) Fixes: 5d8c71f9e5fbdd95650be00294d238e27a363b5c Signed-off-by: NeilBrown <neilb@suse.de>
This caused some strange booting lockup issues on an Intel G33
belonging to Daniel Vetter, very unusual, I was hoping Daniel
would track this down, but it looks like instead I'll have to hack
a different fix for -next.
Dave Airlie [Tue, 14 Jan 2014 02:44:48 +0000 (12:44 +1000)]
Merge tag 'drm-intel-fixes-2014-01-13' of git://people.freedesktop.org/~danvet/drm-intel into drm-fixes
Black screen fixes, one for hsw+bdw each and a regression fix for
locking+load detection.
* tag 'drm-intel-fixes-2014-01-13' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915/bdw: make sure south port interrupts are enabled properly v2
drm/i915: Don't grab crtc mutexes in intel_modeset_gem_init()
drm/i915: fix DDI PLLs HW state readout code
Linus Torvalds [Mon, 13 Jan 2014 03:59:05 +0000 (10:59 +0700)]
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc fix from Ben Herrenschmidt:
"Here's one regression fix for 3.13 that I would appreciate if you
could still pull in. It was an "interesting" one to debug, basically
it's an old bug that got somewhat "exposed" by new code breaking the
boot on PA Semi boards (yes, it does appear that some people are still
using these!)"
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc: Check return value of instance-to-package OF call
Linus Torvalds [Mon, 13 Jan 2014 00:28:49 +0000 (07:28 +0700)]
Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Peter Anvin:
"Sorry, meant to push out this batch earlier this weekend"
* 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, fpu, amd: Clear exceptions in AMD FXSAVE workaround
ftrace/x86: Load ftrace_ops in parameter not the variable holding it
powerpc: Check return value of instance-to-package OF call
On PA-Semi firmware, the instance-to-package callback doesn't seem
to be implemented. We didn't check for error, however, thus
subsequently passed the -1 value returned into stdout_node to
thins like prom_getprop etc...
Thus caused the firmware to load values around 0 (physical) internally
as node structures. It somewhat "worked" as long as we had a NULL in the
right place (address 8) at the beginning of the kernel, we didn't "see"
the bug. But commit 5c0484e25ec03243d4c2f2d4416d4a13efc77f6a
"powerpc: Endian safe trampoline" changed the kernel entry point causing
that old bug to now cause a crash early during boot.
This fixes booting on PA-Semi board by properly checking the return
value from instance-to-package.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Tested-by: Olof Johansson <olof@lixom.net>
---
Taras Kondratiuk [Fri, 10 Jan 2014 00:27:08 +0000 (01:27 +0100)]
ARM: 7938/1: OMAP4/highbank: Flush L2 cache before disabling
Kexec disables outer cache before jumping to reboot code, but it doesn't
flush it explicitly. Flush is done implicitly inside of l2x0_disable().
But some SoC's override default .disable handler and don't flush cache.
This may lead to a corrupted memory during Kexec reboot on these
platforms.
This patch adds cache flush inside of OMAP4 and Highbank outer_cache.disable()
handlers to make it consistent with default l2x0_disable().
Acked-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Note, the crash came from stressing the deletion and reading of debugfs
files. I was not able to recreate this via normal files. But I'm not
sure they are safe. It may just be that the race window is much harder
to hit.
What seems to have happened (and what I have traced), is the file is
being opened at the same time the file or directory is being deleted.
As the dentry and inode locks are not held during the path walk, nor is
the inodes ref counts being incremented, there is nothing saving these
structures from being discarded except for an rcu_read_lock().
The rcu_read_lock() protects against freeing of the inode, but it does
not protect freeing of the inode_security_struct. Now if the freeing of
the i_security happens with a call_rcu(), and the i_security field of
the inode is not changed (it gets freed as the inode gets freed) then
there will be no issue here. (Linus Torvalds suggested not setting the
field to NULL such that we do not need to check if it is NULL in the
permission check).
Note, this is a hack, but it fixes the problem at hand. A real fix is
to restructure the destroy_inode() to call all the destructor handlers
from the RCU callback. But that is a major job to do, and requires a
lot of work. For now, we just band-aid this bug with this fix (it
works), and work on a more maintainable solution in the future.
do_huge_pmd_wp_page() tests is_huge_zero_pmd(orig_pmd) four times: but
since shrink_huge_zero_page() can free the huge_zero_page, and we have
no hold of our own on it here (except where the fourth test holds
page_table_lock and has checked pmd_same), it's possible for it to
answer yes the first time, but no to the second or third test. Change
all those last three to tests for NULL page.
(Note: this is not the same issue as trinity's DEBUG_PAGEALLOC BUG
in copy_page_rep with RSI: ffff88009c422000, reported by Sasha Levin
in https://lkml.org/lkml/2013/3/29/103. I believe that one is due
to the source page being split, and a tail page freed, while copy
is in progress; and not a problem without DEBUG_PAGEALLOC, since
the pmd_same check will prevent a miscopy from being made visible.)
When queue_mode is NULL_Q_MQ and null_blk is being removed,
blk_cleanup_queue() isn't called to cleanup queue, so the queue
allocated won't be freed.
This patch calls blk_cleanup_queue() for MQ to drain all pending
requests first and release the reference counter of queue kobject, then
blk_mq_free_queue() will be called in queue kobject's release handler
when queue kobject's reference counter drops to zero.
Signed-off-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 12 Jan 2014 03:15:52 +0000 (19:15 -0800)]
x86, fpu, amd: Clear exceptions in AMD FXSAVE workaround
Before we do an EMMS in the AMD FXSAVE information leak workaround we
need to clear any pending exceptions, otherwise we trap with a
floating-point exception inside this code.
Taras Kondratiuk [Fri, 10 Jan 2014 00:36:00 +0000 (01:36 +0100)]
ARM: 7939/1: traps: fix opcode endianness when read from user memory
Currently code has an inverted logic: opcode from user memory
is swapped to a proper endianness only in case of read error.
While normally opcode should be swapped only if it was read
correctly from user memory.
Reviewed-by: Victor Kamensky <victor.kamensky@linaro.org> Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Stephen Boyd [Thu, 9 Jan 2014 23:57:06 +0000 (00:57 +0100)]
ARM: 7937/1: perf_event: Silence sparse warning
arch/arm/kernel/perf_event_cpu.c:274:25: warning: incorrect type in assignment (different modifiers)
arch/arm/kernel/perf_event_cpu.c:274:25: expected int ( *init_fn )( ... )
arch/arm/kernel/perf_event_cpu.c:274:25: got void const *const data
Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Sudeep Holla [Wed, 8 Jan 2014 17:24:21 +0000 (18:24 +0100)]
ARM: 7934/1: DT/kernel: fix arch_match_cpu_phys_id to avoid erroneous match
The MPIDR contains specific bitfields(MPIDR.Aff{2..0}) which uniquely
identify a CPU, in addition to some non-identifying information and
reserved bits. The ARM cpu binding defines the 'reg' property to only
contain the affinity bits, and any cpu nodes with other bits set in
their 'reg' entry are skipped.
As such it is not necessary to mask the phys_id with MPIDR_HWID_BITMASK,
and doing so could lead to matching erroneous CPU nodes in the device
tree. This patch removes the masking of the physical identifier.
Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Pull networking fixes from David Miller:
"Famouse last words: "final pull request" :-)
I'm sending this because Jason Wang's fixes are pretty important
1) Add missing per-cpu stats initialization to ip6_vti. Otherwise
lockdep spits out a call trace. From Li RongQing.
2) Fix NULL oops in wireless hwsim, from Javier Lopez
3) TIPC deferred packet queue unlink must NULL out skb->next to avoid
crashes. From Erik Hugne
4) Fix access to uninitialized buffer in nf_nat netfilter code, from
Daniel Borkmann
5) Fix lifetime of ipv6 loopback and SIT tunnel addresses, otherwise
they basically timeout immediately. From Hannes Frederic Sowa
6) Fix DMA unmapping of TSO packets in bnx2x driver, from Michal
Schmidt
7) Do not allow L2 forwarding offload via macvtap device, the way
things are now it will not end up being forwaded at all. From
Jason Wang
8) Fix transmit queue selection via ndo_dfwd_start_xmit(), fixing
things like applying NETIF_F_LLTX to the wrong device (!!) and
eliding the proper transmit watchdog handling
9) qlcnic driver was not updating tx statistics at all, from Manish
Chopra"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
qlcnic: Fix ethtool statistics length calculation
qlcnic: Fix bug in TX statistics
net: core: explicitly select a txq before doing l2 forwarding
macvlan: forbid L2 fowarding offload for macvtap
bnx2x: fix DMA unmapping of TSO split BDs
ipv6: add link-local, sit and loopback address with INFINITY_LIFE_TIME
bnx2x: prevent WARN during driver unload
tipc: correctly unlink packets from deferred packet queue
ipv6: pcpu_tstats.syncp should be initialised in ip6_vti.c
netfilter: only warn once on wrong seqadj usage
netfilter: nf_nat: fix access to uninitialized buffer in IRC NAT helper
NFC: Fix target mode p2p link establishment
iwlwifi: add new devices for 7265 series
mac80211: move "bufferable MMPDU" check to fix AP mode scan
mac80211_hwsim: Fix NULL pointer dereference
Linus Torvalds [Fri, 10 Jan 2014 23:33:03 +0000 (06:33 +0700)]
Merge tag 'xfs-for-linus-v3.13-rc8' of git://oss.sgi.com/xfs/xfs
Pull xfs bugfixes from Ben Myers:
"Here we have a bugfix for an off-by-one in the remote attribute
verifier that results in a forced shutdown which you can hit with v5
superblock by creating a 64k xattr, and a fix for a missing
destroy_work_on_stack() in the allocation worker.
It's a bit late, but they are both fairly straightforward"
* tag 'xfs-for-linus-v3.13-rc8' of git://oss.sgi.com/xfs/xfs:
xfs: Calling destroy_work_on_stack() to pair with INIT_WORK_ONSTACK()
xfs: fix off-by-one error in xfs_attr3_rmt_verify
Linus Torvalds [Fri, 10 Jan 2014 23:26:27 +0000 (06:26 +0700)]
Merge branch 'leds-fixes-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
Pull LED fix from Bryan Wu:
"Pali Rohár and Pavel Machek reported the LED of Nokia N900 doesn't
work with our latest 3.13-rc6 kernel. Milo fixed the regression here"
* 'leds-fixes-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds:
leds: lp5521/5523: Remove duplicate mutex
Linus Torvalds [Fri, 10 Jan 2014 23:25:02 +0000 (06:25 +0700)]
Merge tag 'pm+acpi-3.13-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes from Rafael Wysocki:
- Recent commits modifying the lists of C-states in the intel_idle
driver introduced bugs leading to crashes on some systems. Two fixes
from Jiang Liu.
- The ACPI AC driver should receive all types of notifications, but
recent change made it ignore some of them. Fix from Alexander Mezin.
- intel_pstate's validity checks for MSRs it depends on are not
sufficient to catch the lack of support in nested KVM setups, so they
are extended to cover that case. From Dirk Brandewie.
- NEC LZ750/LS has a botched up _BIX method in its ACPI tables, so our
ACPI battery driver needs a quirk for it. From Lan Tianyu.
- The tpm_ppi driver sometimes leaks memory allocated by
acpi_get_name(). Fix from Jiang Liu.
* tag 'pm+acpi-3.13-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
intel_idle: close avn_cstates array with correct marker
Revert "intel_idle: mark states tables with __initdata tag"
ACPI / Battery: Add a _BIX quirk for NEC LZ750/LS
intel_pstate: Add X86_FEATURE_APERFMPERF to cpu match parameters.
ACPI / TPM: fix memory leak when walking ACPI namespace
ACPI / AC: change notification handler type to ACPI_ALL_NOTIFY
Linus Torvalds [Fri, 10 Jan 2014 23:23:57 +0000 (06:23 +0700)]
Merge tag 'mfd-fixes-3.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-fixes
Pull MFD fix from Samuel Ortiz:
"This is the 2nd MFD pull request for 3.13
It only contains one fix for the rtsx_pcr driver. Without it we see a
kernel panic on some machines, when resuming from suspend to RAM"
* tag 'mfd-fixes-3.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-fixes:
mfd: rtsx_pcr: Disable interrupts before cancelling delayed works
Milo Kim [Tue, 3 Dec 2013 01:21:44 +0000 (17:21 -0800)]
leds: lp5521/5523: Remove duplicate mutex
It can be a problem when a pattern is loaded via the firmware interface.
LP55xx common driver has already locked the mutex in 'lp55xx_firmware_loaded()'.
So it should be deleted.
On the other hand, locks are required in store_engine_load()
on updating program memory.
Reported-by: Pali Rohár <pali.rohar@gmail.com> Reported-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Milo Kim <milo.kim@ti.com> Signed-off-by: Bryan Wu <cooloney@gmail.com> Cc: <stable@vger.kernel.org>
Jesse Barnes [Fri, 10 Jan 2014 21:13:09 +0000 (13:13 -0800)]
drm/i915/bdw: make sure south port interrupts are enabled properly v2
We were apparently relying on the defaults on BDW, which resulted in no
hotplug or AUX interrupts. So be sure to call the ibx_irq_preinstall to
enable all interrupts.
v2: use preinstall instead of redundant SDIER write
Chuansheng Liu [Tue, 7 Jan 2014 08:53:34 +0000 (16:53 +0800)]
xfs: Calling destroy_work_on_stack() to pair with INIT_WORK_ONSTACK()
In case CONFIG_DEBUG_OBJECTS_WORK is defined, it is needed to
call destroy_work_on_stack() which frees the debug object to pair
with INIT_WORK_ONSTACK().
Signed-off-by: Liu, Chuansheng <chuansheng.liu@intel.com> Reviewed-by: Ben Myers <bpm@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
(cherry picked from commit 6f96b3063cdd473c68664a190524ed966ac0cd92)
Jie Liu [Wed, 1 Jan 2014 11:28:03 +0000 (19:28 +0800)]
xfs: fix off-by-one error in xfs_attr3_rmt_verify
With CRC check is enabled, if trying to set an attributes value just
equal to the maximum size of XATTR_SIZE_MAX would cause the v3 remote
attr write verification procedure failure, which would yield the back
trace like below:
This patch fix it to check the remote EA size is greater than the
XATTR_SIZE_MAX rather than more than or equal to it, because it's
valid if the specified EA value size is equal to the limitation as
per VFS setxattr interface.
Signed-off-by: Jie Liu <jeff.liu@oracle.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
(cherry picked from commit 85dd0707f0cad26d60f2dc574d17a5ab948d10f7)
Shahed Shaikh [Thu, 9 Jan 2014 17:41:05 +0000 (12:41 -0500)]
qlcnic: Fix ethtool statistics length calculation
o Consider number of Tx queues while calculating the length of
Tx statistics as part of ethtool stats.
o Calculate statistics lenght properly for 82xx and 83xx adapter
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jason Wang [Fri, 10 Jan 2014 08:18:26 +0000 (16:18 +0800)]
net: core: explicitly select a txq before doing l2 forwarding
Currently, the tx queue were selected implicitly in ndo_dfwd_start_xmit(). The
will cause several issues:
- NETIF_F_LLTX were removed for macvlan, so txq lock were done for macvlan
instead of lower device which misses the necessary txq synchronization for
lower device such as txq stopping or frozen required by dev watchdog or
control path.
- dev_hard_start_xmit() was called with NULL txq which bypasses the net device
watchdog.
- dev_hard_start_xmit() does not check txq everywhere which will lead a crash
when tso is disabled for lower device.
Fix this by explicitly introducing a new param for .ndo_select_queue() for just
selecting queues in the case of l2 forwarding offload. netdev_pick_tx() was also
extended to accept this parameter and dev_queue_xmit_accel() was used to do l2
forwarding transmission.
With this fixes, NETIF_F_LLTX could be preserved for macvlan and there's no need
to check txq against NULL in dev_hard_start_xmit(). Also there's no need to keep
a dedicated ndo_dfwd_start_xmit() and we can just reuse the code of
dev_queue_xmit() to do the transmission.
In the future, it was also required for macvtap l2 forwarding support since it
provides a necessary synchronization method.
Cc: John Fastabend <john.r.fastabend@intel.com> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: e1000-devel@lists.sourceforge.net Signed-off-by: Jason Wang <jasowang@redhat.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jason Wang [Fri, 10 Jan 2014 08:18:25 +0000 (16:18 +0800)]
macvlan: forbid L2 fowarding offload for macvtap
L2 fowarding offload will bypass the rx handler of real device. This will make
the packet could not be forwarded to macvtap device. Another problem is the
dev_hard_start_xmit() called for macvtap does not have any synchronization.
Fix this by forbidding L2 forwarding for macvtap.
Cc: John Fastabend <john.r.fastabend@intel.com> Cc: Neil Horman <nhorman@tuxdriver.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Acked-by: John Fastabend <john.r.fastabend@intel.com.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 10 Jan 2014 18:21:22 +0000 (13:21 -0500)]
Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John W. Linville says:
====================
For the mac80211 bits, Johannes says:
"I have a fix from Javier for mac80211_hwsim when used with wmediumd
userspace, and a fix from Felix for buffering in AP mode."
For the NFC bits, Samuel says:
"This pull request only contains one fix for a regression introduced with
commit e29a9e2ae165620d. Without this fix, we can not establish a p2p link
in target mode. Only initiator mode works."
For the iwlwifi bits, Emmanuel says:
"It only includes new device IDs so it's not vital. If you have a pull
request to net.git anyway, I'd happy to have this in."
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Michal Schmidt [Thu, 9 Jan 2014 13:36:27 +0000 (14:36 +0100)]
bnx2x: fix DMA unmapping of TSO split BDs
bnx2x triggers warnings with CONFIG_DMA_API_DEBUG=y:
WARNING: CPU: 0 PID: 2253 at lib/dma-debug.c:887 check_unmap+0xf8/0x920()
bnx2x 0000:28:00.0: DMA-API: device driver frees DMA memory with
different size [device address=0x00000000da2b389e] [map size=1490 bytes]
[unmap size=66 bytes]
The reason is that bnx2x splits a TSO BD into two BDs (headers + data)
using one DMA mapping for both, but it uses only the length of the first
BD when unmapping.
This patch fixes the bug by unmapping the whole length of the two BDs.
Signed-off-by: Michal Schmidt <mschmidt@redhat.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Acked-by: Dmitry Kravkov <dmitry@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 10 Jan 2014 08:57:23 +0000 (15:57 +0700)]
Merge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux
Pull clock fixes from Mike Turquette:
"Late fixes for clock drivers. All of these fixes are for user-visible
regressions, typically boot failures or other unsafe system
configuration that causes badness"
* tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux:
clk: clk-divider: fix divisor > 255 bug
clk: exynos: File scope reg_save array should depend on PM_SLEEP
clk: samsung: exynos5250: Add CLK_IGNORE_UNUSED flag for the sysreg clock
ARM: dts: exynos5250: Fix MDMA0 clock number
clk: samsung: exynos5250: Add MDMA0 clocks
clk: samsung: exynos5250: Fix ACP gate register offset
clk: exynos5250: fix sysmmu_mfc{l,r} gate clocks
clk: samsung: exynos4: Correct SRC_MFC register
Linus Torvalds [Fri, 10 Jan 2014 08:54:49 +0000 (15:54 +0700)]
Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"A few fixes for Renesas platforms to fixup DMA masks (this started
causing errors once the DMA API added checks for valid masks in 3.13)"
Ville Syrjälä [Tue, 7 Jan 2014 14:15:36 +0000 (16:15 +0200)]
drm/i915: Don't grab crtc mutexes in intel_modeset_gem_init()
When the pipe A force quirk is applied the code will attempt to grab
a crtc mutex during intel_modeset_setup_hw_state(). If we're already
holding all crtc mutexes this will obviously deadlock every time.
So instead of using drm_modeset_lock_all() just grab the
mode_config.mutex. This is enough to avoid the unlocked mutex warnings
from certain lower level functions.
drm/i915: Take modeset locks around intel_modeset_setup_hw_state()
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: stable@vger.kernel.org
[danvet: Add cc: stable since the offending commit has that, too.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
ipv6: add link-local, sit and loopback address with INFINITY_LIFE_TIME
In the past the IFA_PERMANENT flag indicated, that the valid and preferred
lifetime where ignored. Since change fad8da3e085ddf ("ipv6 addrconf: fix
preferred lifetime state-changing behavior while valid_lft is infinity")
we honour at least the preferred lifetime on those addresses. As such
the valid lifetime gets recalculated and updated to 0.
If loopback address is added manually this problem does not occur.
Also if NetworkManager manages IPv6, those addresses will get added via
inet6_rtm_newaddr and thus will have a correct lifetime, too.
Reported-by: François-Xavier Le Bail <fx.lebail@yahoo.com> Reported-by: Damien Wyart <damien.wyart@gmail.com> Fixes: fad8da3e085ddf ("ipv6 addrconf: fix preferred lifetime state-changing behavior while valid_lft is infinity") Cc: Yasushi Asano <yasushi.asano@jp.fujitsu.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Tue, 7 Jan 2014 10:07:41 +0000 (12:07 +0200)]
bnx2x: prevent WARN during driver unload
Starting with commit 80c33dd "net: add might_sleep() call to napi_disable"
bnx2x fails the might_sleep tests causing a stack trace to appear whenever
the driver is unloaded, as local_bh_disable() is being called before
napi_disable().
This changes the locking schematics related to CONFIG_NET_RX_BUSY_POLL,
preventing the need for calling local_bh_disable() and thus eliminating
the issue.
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com> Signed-off-by: Ariel Elior <ariele@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jiang Liu [Thu, 9 Jan 2014 07:30:27 +0000 (15:30 +0800)]
intel_idle: close avn_cstates array with correct marker
Close avn_cstates array with correct marker to avoid overflow
in function intel_idle_cpu_init().
[rjw: The problem was introduced when commit 22e580d07f65 was merged
on top of eba682a5aeb6 (intel_idle: shrink states tables).]
Fixes: 22e580d07f65 (intel_idle: Fixed C6 state on Avoton/Rangeley processors) Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Steven Rostedt [Wed, 13 Nov 2013 20:20:04 +0000 (15:20 -0500)]
ftrace/x86: Load ftrace_ops in parameter not the variable holding it
Function tracing callbacks expect to have the ftrace_ops that registered it
passed to them, not the address of the variable that holds the ftrace_ops
that registered it.
Use a mov instead of a lea to store the ftrace_ops into the parameter
of the function tracing callback.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Link: http://lkml.kernel.org/r/20131113152004.459787f9@gandalf.local.home Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: <stable@vger.kernel.org> # v3.8+
Commit 9d046ccb98085 marks all state tables with __initdata, but
the state table may be accessed when doing CPU online, which then
causing system crash as below:
Fixes: 9d046ccb98085 (intel_idle: mark states tables with __initdata tag) Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Linus Torvalds [Thu, 9 Jan 2014 01:08:23 +0000 (09:08 +0800)]
Merge branch 'for-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata fixes from Tejun Heo:
"Late fixes for libata. Nothing too interesting. Adding missing PM
callbacks to satat_sis and an additional PCI ID for ahci"
* 'for-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
sata_sis: missing PM support
ahci: add PCI ID for Marvell 88SE9170 SATA controller
parisc: Ensure full cache coherency for kmap/kunmap
Helge Deller noted a few weeks ago problems with the AIO support on
parisc. This change is the result of numerous iterations on how best to
deal with this problem.
The solution adopted here is to provide full cache coherency in a
uniform manner on all parisc systems. This involves calling
flush_dcache_page() on kmap operations and flush_kernel_dcache_page() on
kunmap operations. As a result, the copy_user_page() and
clear_user_page() functions can be removed and the overall code is
simpler.
The change ensures that both userspace and kernel aliases to a mapped
page are invalidated and flushed. This is necessary for the correct
operation of PA8800 and PA8900 based systems which do not support
inequivalent aliases.
With this change, I have observed no cache related issues on c8000 and
rp3440. It is now possible for example to do kernel builds with "-j64"
on four way systems.
On systems using XFS file systems, the patch recently posted by Mikulas
Patocka to "fix crash using XFS on loopback" is needed to avoid a hang
caused by an uninitialized lock passed to flush_dcache_page() in the
page struct.
Signed-off-by: John David Anglin <dave.anglin@bell.net> Cc: stable@vger.kernel.org # v3.9+ Signed-off-by: Helge Deller <deller@gmx.de>
Merge tag 'nfc-fixes-3.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/nfc-fixes
Samuel Ortiz <sameo@linux.intel.com> says:
"This is the first NFC fixes pull request for 3.13.
It only contains one fix for a regression introduced with commit e29a9e2ae165620d. Without this fix, we can not establish a p2p link in
target mode. Only initiator mode works."
Signed-off-by: John W. Linville <linville@tuxdriver.com>
James Hogan [Mon, 16 Dec 2013 10:41:38 +0000 (10:41 +0000)]
clk: clk-divider: fix divisor > 255 bug
Commit 6d9252bd9a4bb (clk: Add support for power of two type dividers)
merged in v3.6 added the _get_val function to convert a divisor value to
a register field value depending on the flags. However it used the type
u8 for the div field, causing divisors larger than 255 to be masked
and the resultant clock rate to be too high.
E.g. in my case an 11bit divider was supposed to divide 24.576 MHz down
to 32.768KHz. The divisor was correctly calculated as 750 (0x2ee). This
was masked to 238 (0xee) resulting in a frequency of 103.26KHz.
Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Rajendra Nayak <rnayak@ti.com> Cc: linux-arm-kernel@lists.infradead.org Cc: stable@vger.kernel.org Signed-off-by: Mike Turquette <mturquette@linaro.org>
Dave Airlie [Wed, 8 Jan 2014 07:55:44 +0000 (17:55 +1000)]
Merge tag 'drm-intel-fixes-2014-01-08' of git://people.freedesktop.org/~danvet/drm-intel into drm-fixes
Just a revert (gen4 backlight seems a lost cause) and a tlb coherency fix
for bdw, plus the patch to sign up Jani for co-maintainer. Thanks to Ben
for taking care of -fixes while I've enjoyed a bit of vacation.
* tag 'drm-intel-fixes-2014-01-08' of git://people.freedesktop.org/~danvet/drm-intel:
MAINTAINERS: Updates for drm/i915
Revert "drm/i915: assume all GM45 Acer laptops use inverted backlight PWM"
drm/i915/bdw: Flush system agent on gen8 also
Ilia Mirkin [Tue, 7 Jan 2014 17:33:59 +0000 (12:33 -0500)]
drm/nouveau/bios: fix offset calculation for BMPv1 bioses
The only BIOS on record that needs the 14 offset has a bios major
version 2 but BMP version 1.01. Another bunch of BIOSes that need the 18
offset have BMP version 2.01 or 5.01 or higher. So instead of looking at the
bios major version, look at the BMP version. BIOSes with BMP version 0
do not contain a detectable script, so always return 0 for them.
See https://bugs.freedesktop.org/show_bug.cgi?id=68835
Reported-by: Mauro Molinari <mauromol@tiscali.it> Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
David S. Miller [Tue, 7 Jan 2014 23:38:03 +0000 (18:38 -0500)]
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:
====================
The following patchset contains two patches:
* fix the IRC NAT helper which was broken when adding (incomplete) IPv6
support, from Daniel Borkmann.
* Refine the previous bugtrap that Jesper added to catch problems for the
usage of the sequence adjustment extension in IPVs in Dec 16th, it may
spam messages in case of finding a real bug.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Erik Hugne [Tue, 7 Jan 2014 20:51:36 +0000 (15:51 -0500)]
tipc: correctly unlink packets from deferred packet queue
When we pull a received packet from a link's 'deferred packets' queue
for processing, its 'next' pointer is not cleared, and still refers to
the next packet in that queue, if any. This is incorrect, but caused
no harm before commit 40ba3cdf542a469aaa9083fa041656e59b109b90 ("tipc:
message reassembly using fragment chain") was introduced. After that
commit, it may sometimes lead to the following oops:
This happens when the last fragment of a message has passed through the
the receiving link's 'deferred packets' queue, and at least one other
packet was added to that queue while it was there. After the fragment
chain with the complete message has been successfully delivered to the
receiving socket, it is released. Since 'next' pointer of the last
fragment in the released chain now is non-NULL, we get the crash shown
above.
We fix this by clearing the 'next' pointer of all received packets,
including those being pulled from the 'deferred' queue, before they
undergo any further processing.
Fixes: 40ba3cdf542a4 ("tipc: message reassembly using fragment chain") Signed-off-by: Erik Hugne <erik.hugne@ericsson.com> Reported-by: Ying Xue <ying.xue@windriver.com> Reviewed-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Before 469bdcefdc ("ipv6: fix the use of pcpu_tstats in ip6_vti.c"),
the pcpu_tstats.syncp is not used to pretect the 64bit elements of
pcpu_tstats, so not appear this calltrace.
Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King [Tue, 7 Jan 2014 17:53:54 +0000 (17:53 +0000)]
Revert "ARM: 7908/1: mm: Fix the arm_dma_limit calculation"
This reverts commit 787b0d5c1ca7ff24feb6f92e4c7f4410ee7d81a8 since
it is no longer required after 7909/1 was applied, and it causes
build regressions when ARM_PATCH_PHYS_VIRT is disabled and DMA_ZONE
is enabled.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Daniel Vetter [Tue, 7 Jan 2014 08:24:31 +0000 (09:24 +0100)]
MAINTAINERS: Updates for drm/i915
Jani for co-maintainer!
Jani has been a really active bug-scrubber in the past few months.
I've asked him whether he wants to do this in a more official capacity
and he agreed. I've already chatted with Dave and Jesse and they
support this.
Note that everyone can't now just relax because "Jani will do all the
bug scrubbing" - au contraire expect more nagging and poking now that
we have more bandwidth.
Longer-term the plan is to share more of the maintainer duties, but we
need to fix up the infrastructure a bit first (like moving the git
repo to a common location).
While at it also add the newly set-up patchwork instance.
Cc: Dave Airlie <airlied@gmail.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Jani Nikula <jani.nikula@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Ilia Mirkin [Mon, 6 Jan 2014 01:07:02 +0000 (20:07 -0500)]
drm/nouveau/bios: make jump conditional
This fixes a hang in VBIOS scripts of the form "condition; jump".
The jump used to always be executed, while now it will only be
executed if the condition is true.
See https://bugs.freedesktop.org/show_bug.cgi?id=72943
Reported-by: Darcy Brás da Silva <dardevelin@cidadecool.com> Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu> Cc: stable@vger.kernel.org
Pull networking fixes from David Miller:
"I'm hoping this is the very last batch of networking fixes for 3.13,
here goes nothing:
1) Fix crashes in VLAN's header_ops passthru.
2) Bridge multicast code needs to use BH spinlocks to prevent
deadlocks with timers. From Curt Brune.
3) ipv6 tunnels lack proper synchornization when updating percpu
statistics. From Li RongQing.
4) Fixes to bnx2x driver from Yaniv Rosner, Dmitry Kravkov and Michal
Kalderon.
5) Avoid undefined operator evaluation order in llc code, from Daniel
Borkmann.
6) Error paths in various GSO offload paths do not unwind properly,
in particular they must undo any modifications they have made to
the SKB. From Wei-Chun Chao.
7) Fix RX refill races during restore in virtio-net, from Jason Wang.
8) Fix SKB use after free in LLC code, from Daniel Borkmann.
9) Missing unlock and OOPS in netpoll code when VLAN tag handling
fails.
10) Fix vxlan device attachment wrt ipv6, from Fan Du.
11) Don't allow creating infiniband links to non-infiniband devices,
from Hangbin Liu.
12) Revert FEC phy reset active low change, it breaks things. From
Fabio Estevam.
13) Fix header pointer handling in 6lowpan header building code, from
Daniel Borkmann.
14) Fix RSS handling in be2net driver, from Vasundhara Volam.
15) Fix modem port indexing in HSO driver, from Dan Williams"
* http://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (38 commits)
bridge: use spin_lock_bh() in br_multicast_set_hash_max
ipv6: don't install anycast address for /128 addresses on routers
hso: fix handling of modem port SERIAL_STATE notifications
isdn: Drop big endian cpp checks from telespci and hfc_pci drivers
be2net: fix max_evt_qs calculation for BE3 in SR-IOV config
be2net: increase the timeout value for loopback-test FW cmd
be2net: disable RSS when number of RXQs is reduced to 1 via set-channels
xen-netback: Include header for vmalloc
net: 6lowpan: fix lowpan_header_create non-compression memcpy call
fec: Revert "fec: Do not assume that PHY reset is active low"
bnx2x: fix VLAN configuration for VFs.
bnx2x: fix AFEX memory overflow
bnx2x: Clean before update RSS arrives
bnx2x: Correct number of MSI-X vectors for VFs
bnx2x: limit number of interrupt vectors for 57711
qlcnic: Fix bug in Tx completion path
infiniband: make sure the src net is infiniband when create new link
{vxlan, inet6} Mark vxlan_dev flags with VXLAN_F_IPV6 properly
cxgb4: allow large buffer size to have page size
netpoll: Fix missing TXQ unlock and and OOPS.
...
Curt Brune [Mon, 6 Jan 2014 19:00:32 +0000 (11:00 -0800)]
bridge: use spin_lock_bh() in br_multicast_set_hash_max
br_multicast_set_hash_max() is called from process context in
net/bridge/br_sysfs_br.c by the sysfs store_hash_max() function.
br_multicast_set_hash_max() calls spin_lock(&br->multicast_lock),
which can deadlock the CPU if a softirq that also tries to take the
same lock interrupts br_multicast_set_hash_max() while the lock is
held . This can happen quite easily when any of the bridge multicast
timers expire, which try to take the same lock.
The fix here is to use spin_lock_bh(), preventing other softirqs from
executing on this CPU.
Steps to reproduce:
1. Create a bridge with several interfaces (I used 4).
2. Set the "multicast query interval" to a low number, like 2.
3. Enable the bridge as a multicast querier.
4. Repeatedly set the bridge hash_max parameter via sysfs.
# while true ; do echo 4096 > /sys/class/net/br0/bridge/hash_max; done
Signed-off-by: Curt Brune <curt@cumulusnetworks.com> Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
ipv6: don't install anycast address for /128 addresses on routers
It does not make sense to create an anycast address for an /128-prefix.
Suppress it.
As 32019e651c6fce ("ipv6: Do not leave router anycast address for /127
prefixes.") shows we also may not leave them, because we could accidentally
remove an anycast address the user has allocated or got added via another
prefix.
Cc: François-Xavier Le Bail <fx.lebail@yahoo.com> Cc: Thomas Haller <thaller@redhat.com> Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Williams [Mon, 6 Jan 2014 16:07:29 +0000 (10:07 -0600)]
hso: fix handling of modem port SERIAL_STATE notifications
The existing serial state notification handling expected older Option
devices, having a hardcoded assumption that the Modem port was always
USB interface #2. That isn't true for devices from the past few years.
hso_serial_state_notification is a local cache of a USB Communications
Interface Class SERIAL_STATE notification from the device, and the
USB CDC specification (section 6.3, table 67 "Class-Specific Notifications")
defines wIndex as the USB interface the event applies to. For hso
devices this will always be the Modem port, as the Modem port is the
only port which is set up to receive them by the driver.
So instead of always expecting USB interface #2, instead validate the
notification with the actual USB interface number of the Modem port.
Signed-off-by: Dan Williams <dcbw@redhat.com> Tested-by: H. Nikolaus Schaller <hns@goldelico.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Dirk Brandewie [Mon, 6 Jan 2014 18:59:16 +0000 (10:59 -0800)]
intel_pstate: Add X86_FEATURE_APERFMPERF to cpu match parameters.
KVM environments do not support APERF/MPERF MSRs. intel_pstate cannot
operate without these registers.
The previous validity checks in intel_pstate_msrs_not_valid() are
insufficent in nested KVMs.
References: https://bugzilla.redhat.com/show_bug.cgi?id=1046317 Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com> Cc: All applicable <stable@vger.kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Eric Whitney [Mon, 6 Jan 2014 19:00:23 +0000 (14:00 -0500)]
ext4: fix bigalloc regression
Commit f5a44db5d2 introduced a regression on filesystems created with
the bigalloc feature (cluster size > blocksize). It causes xfstests
generic/006 and /013 to fail with an unexpected JBD2 failure and
transaction abort that leaves the test file system in a read only state.
Other xfstests run on bigalloc file systems are likely to fail as well.
The cause is the accidental use of a cluster mask where a cluster
offset was needed in ext4_ext_map_blocks().
Suresh Reddy [Mon, 6 Jan 2014 07:32:25 +0000 (13:02 +0530)]
be2net: fix max_evt_qs calculation for BE3 in SR-IOV config
The driver wrongly assumes 16 EQs/vectors are available for each BE3 PF.
When SR-IOV is enabled, a BE3 PF can support only a max of 8 EQs.
Signed-off-by: Suresh Reddy <suresh.reddy@emulex.com> Signed-off-by: Sathya Perla <sathya.perla@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Suresh Reddy [Mon, 6 Jan 2014 07:32:24 +0000 (13:02 +0530)]
be2net: increase the timeout value for loopback-test FW cmd
The loopback test FW cmd may need upto 15 seconds to complete on
certain PHYs. This patch also fixes the name of the completion variable
used to synchronize FW cmd completions as it not used by the flashing
cmd alone anymore.
Signed-off-by: Suresh Reddy <suresh.reddy@emulex.com> Signed-off-by: Sathya Perla <sathya.perla@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
be2net: disable RSS when number of RXQs is reduced to 1 via set-channels
When *only* the default RXQ is used, the RSS policy must be disabled so
that all IP and no-IP traffic is placed into the default RXQ. If not,
IP traffic is dropped.
Also, issue the RSS_CONFIG cmd only if FW advertises RSS capability for
the interface. Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com> Signed-off-by: Sathya Perla <sathya.perla@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Tue, 31 Dec 2013 15:28:39 +0000 (16:28 +0100)]
netfilter: nf_nat: fix access to uninitialized buffer in IRC NAT helper
Commit 5901b6be885e attempted to introduce IPv6 support into
IRC NAT helper. By doing so, the following code seemed to be removed
by accident:
ip = ntohl(exp->master->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip);
sprintf(buffer, "%u %u", ip, port);
pr_debug("nf_nat_irc: inserting '%s' == %pI4, port %u\n", buffer, &ip, port);
This leads to the fact that buffer[] was left uninitialized and
contained some stack value. When we call nf_nat_mangle_tcp_packet(),
we call strlen(buffer) on excatly this uninitialized buffer. If we
are unlucky and the skb has enough tailroom, we overwrite resp. leak
contents with values that sit on our stack into the packet and send
that out to the receiver.
Since the rather informal DCC spec [1] does not seem to specify
IPv6 support right now, we log such occurences so that admins can
act accordingly, and drop the packet. I've looked into XChat source,
and IPv6 is not supported there: addresses are in u32 and print
via %u format string.
Therefore, restore old behaviour as in IPv4, use snprintf(). The
IRC helper does not support IPv6 by now. By this, we can safely use
strlen(buffer) in nf_nat_mangle_tcp_packet() and prevent a buffer
overflow. Also simplify some code as we now have ct variable anyway.
Fixes: 5901b6be885e ("netfilter: nf_nat: support IPv6 in IRC NAT helper") Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Cc: Harald Welte <laforge@gnumonks.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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