GitHub/mt8127/android_kernel_alcatel_ttab.git
6 years agoMerge tag 'v3.10.92' into update
Stricted [Wed, 21 Mar 2018 21:49:35 +0000 (22:49 +0100)]
Merge tag 'v3.10.92' into update

This is the 3.10.92 stable release

6 years agoMerge tag 'v3.10.91' into update
Stricted [Wed, 21 Mar 2018 21:48:36 +0000 (22:48 +0100)]
Merge tag 'v3.10.91' into update

This is the 3.10.91 stable release

6 years agoMerge tag 'v3.10.90' into update
Stricted [Wed, 21 Mar 2018 21:47:31 +0000 (22:47 +0100)]
Merge tag 'v3.10.90' into update

This is the 3.10.90 stable release

6 years agoMerge tag 'v3.10.89' into update
Stricted [Wed, 21 Mar 2018 21:47:28 +0000 (22:47 +0100)]
Merge tag 'v3.10.89' into update

This is the 3.10.89 stable release

6 years agoMerge tag 'v3.10.88' into update
Stricted [Wed, 21 Mar 2018 21:47:25 +0000 (22:47 +0100)]
Merge tag 'v3.10.88' into update

This is the 3.10.88 stable release

6 years agoMerge tag 'v3.10.87' into update
Stricted [Wed, 21 Mar 2018 21:47:22 +0000 (22:47 +0100)]
Merge tag 'v3.10.87' into update

This is the 3.10.87 stable release

6 years agoMerge tag 'v3.10.86' into update
Stricted [Wed, 21 Mar 2018 21:47:17 +0000 (22:47 +0100)]
Merge tag 'v3.10.86' into update

This is the 3.10.86 stable release

6 years agoMerge tag 'v3.10.85' into update
Stricted [Wed, 21 Mar 2018 21:46:39 +0000 (22:46 +0100)]
Merge tag 'v3.10.85' into update

This is the 3.10.85 stable release

6 years agoMerge tag 'v3.10.84' into update
Stricted [Wed, 21 Mar 2018 21:46:36 +0000 (22:46 +0100)]
Merge tag 'v3.10.84' into update

This is the 3.10.84 stable release

6 years agoMerge tag 'v3.10.83' into update
Stricted [Wed, 21 Mar 2018 21:46:32 +0000 (22:46 +0100)]
Merge tag 'v3.10.83' into update

This is the 3.10.83 stable release

6 years agoMerge tag 'v3.10.82' into update
Stricted [Wed, 21 Mar 2018 21:45:38 +0000 (22:45 +0100)]
Merge tag 'v3.10.82' into update

This is the 3.10.82 stable release

6 years agoMerge tag 'v3.10.81' into update
Stricted [Wed, 21 Mar 2018 21:45:35 +0000 (22:45 +0100)]
Merge tag 'v3.10.81' into update

This is the 3.10.81 stable release

6 years agoMerge tag 'v3.10.80' into update
Stricted [Wed, 21 Mar 2018 21:45:22 +0000 (22:45 +0100)]
Merge tag 'v3.10.80' into update

This is the 3.10.80 stable release

6 years agoMerge tag 'v3.10.79' into update
Stricted [Wed, 21 Mar 2018 21:44:42 +0000 (22:44 +0100)]
Merge tag 'v3.10.79' into update

This is the 3.10.79 stable release

6 years agoMerge tag 'v3.10.78' into update
Stricted [Wed, 21 Mar 2018 21:44:38 +0000 (22:44 +0100)]
Merge tag 'v3.10.78' into update

This is the 3.10.78 stable release

6 years agoMerge tag 'v3.10.77' into update
Stricted [Wed, 21 Mar 2018 21:44:34 +0000 (22:44 +0100)]
Merge tag 'v3.10.77' into update

This is the 3.10.77 stable release

6 years agoMerge tag 'v3.10.76' into update
Stricted [Wed, 21 Mar 2018 21:42:30 +0000 (22:42 +0100)]
Merge tag 'v3.10.76' into update

This is the 3.10.76 stable release

6 years agoMerge tag 'v3.10.75' into update
Stricted [Wed, 21 Mar 2018 21:41:10 +0000 (22:41 +0100)]
Merge tag 'v3.10.75' into update

This is the 3.10.75 stable release

6 years agoMerge tag 'v3.10.74' into update
Stricted [Wed, 21 Mar 2018 21:41:07 +0000 (22:41 +0100)]
Merge tag 'v3.10.74' into update

This is the 3.10.74 stable release

6 years agoMerge tag 'v3.10.73' into update
Stricted [Wed, 21 Mar 2018 21:41:03 +0000 (22:41 +0100)]
Merge tag 'v3.10.73' into update

This is the 3.10.73 stable release

6 years agoMerge tag 'v3.10.72' into update
Stricted [Wed, 21 Mar 2018 21:40:54 +0000 (22:40 +0100)]
Merge tag 'v3.10.72' into update

This is the 3.10.72 stable release

6 years agoMerge tag 'v3.10.71' into update
Stricted [Wed, 21 Mar 2018 21:40:50 +0000 (22:40 +0100)]
Merge tag 'v3.10.71' into update

This is the 3.10.71 stable release

6 years agoMerge tag 'v3.10.70' into update
Stricted [Wed, 21 Mar 2018 21:40:47 +0000 (22:40 +0100)]
Merge tag 'v3.10.70' into update

This is the 3.10.70 stable release

6 years agoMerge tag 'v3.10.69' into update
Stricted [Wed, 21 Mar 2018 21:39:46 +0000 (22:39 +0100)]
Merge tag 'v3.10.69' into update

This is the 3.10.69 stable release

6 years agoMerge tag 'v3.10.68' into update
Stricted [Wed, 21 Mar 2018 21:38:24 +0000 (22:38 +0100)]
Merge tag 'v3.10.68' into update

This is the 3.10.68 stable release

6 years agoMerge tag 'v3.10.67' into update
Stricted [Wed, 21 Mar 2018 21:36:30 +0000 (22:36 +0100)]
Merge tag 'v3.10.67' into update

This is the 3.10.67 stable release

6 years agoMerge tag 'v3.10.66' into update
Stricted [Wed, 21 Mar 2018 21:36:27 +0000 (22:36 +0100)]
Merge tag 'v3.10.66' into update

This is the 3.10.66 stable release

6 years agoMerge tag 'v3.10.65' into update
Stricted [Wed, 21 Mar 2018 21:36:23 +0000 (22:36 +0100)]
Merge tag 'v3.10.65' into update

This is the 3.10.65 stable release

6 years agoMerge tag 'v3.10.64' into update
Stricted [Wed, 21 Mar 2018 21:33:51 +0000 (22:33 +0100)]
Merge tag 'v3.10.64' into update

This is the 3.10.64 stable release

6 years agoMerge tag 'v3.10.63' into update
Stricted [Wed, 21 Mar 2018 21:33:47 +0000 (22:33 +0100)]
Merge tag 'v3.10.63' into update

This is the 3.10.63 stable release

6 years agoMerge tag 'v3.10.62' into update
Stricted [Wed, 21 Mar 2018 21:31:45 +0000 (22:31 +0100)]
Merge tag 'v3.10.62' into update

This is the 3.10.62 stable release

6 years agoMerge tag 'v3.10.61' into update
Stricted [Wed, 21 Mar 2018 21:31:40 +0000 (22:31 +0100)]
Merge tag 'v3.10.61' into update

This is the 3.10.61 stable release

6 years agoMerge tag 'v3.10.60' into update
Stricted [Wed, 21 Mar 2018 21:31:34 +0000 (22:31 +0100)]
Merge tag 'v3.10.60' into update

This is the 3.10.60 stable release

6 years agoMerge tag 'v3.10.59' into update
Stricted [Wed, 21 Mar 2018 21:31:29 +0000 (22:31 +0100)]
Merge tag 'v3.10.59' into update

This is the 3.10.59 stable release

6 years agoMerge tag 'v3.10.58' into update
Stricted [Wed, 21 Mar 2018 21:31:25 +0000 (22:31 +0100)]
Merge tag 'v3.10.58' into update

This is the 3.10.58 stable release

6 years agoMerge tag 'v3.10.57' into update
Stricted [Wed, 21 Mar 2018 21:28:46 +0000 (22:28 +0100)]
Merge tag 'v3.10.57' into update

This is the 3.10.57 stable release

6 years agoMerge tag 'v3.10.56' into update
Stricted [Wed, 21 Mar 2018 21:22:19 +0000 (22:22 +0100)]
Merge tag 'v3.10.56' into update

This is the 3.10.56 stable release

6 years agoMerge tag 'v3.10.55' into update
Stricted [Wed, 21 Mar 2018 21:13:57 +0000 (22:13 +0100)]
Merge tag 'v3.10.55' into update

This is the 3.10.55 stable release

6 years agodisable some mediatekl custom warnings
Stricted [Wed, 21 Mar 2018 14:41:24 +0000 (15:41 +0100)]
disable some mediatekl custom warnings

6 years agoscripts: kconfig: fix jump initialization
Stricted [Fri, 16 Mar 2018 11:36:42 +0000 (12:36 +0100)]
scripts: kconfig: fix jump initialization

6 years agoscripts: sortextable: fix relocs_size initialization
Stricted [Fri, 16 Mar 2018 11:43:09 +0000 (12:43 +0100)]
scripts: sortextable: fix relocs_size initialization

6 years agocleanup Makefile
Stricted [Mon, 19 Mar 2018 16:45:11 +0000 (17:45 +0100)]
cleanup Makefile

6 years agoremove useless makefiles and build script
Stricted [Mon, 19 Mar 2018 16:33:56 +0000 (17:33 +0100)]
remove useless makefiles and build script

6 years agoAdd an option to multiplex AP and STA on wlan0
Diogo Ferreira [Fri, 15 Apr 2016 17:34:08 +0000 (18:34 +0100)]
Add an option to multiplex AP and STA on wlan0

This adds CONFIG_MTK_COMBO_AOSP_TETHERING_SUPPORT which, when enabled,
allows ap and wlan to co-exist in the same interface, as Android
expects.

Most of this functionality is also available (albeit not compilable broken)
under CFG_TC1_FEATURE but that has larger implications around the radio
and usb stack that we do not want to adopt.

Change-Id: Ib1d1be40566f1bb9ccc7be45b49ec8d1f3b3ba58
Ticket: PORRIDGE-30

6 years agoignore all warning
Stricted [Mon, 19 Mar 2018 13:51:56 +0000 (14:51 +0100)]
ignore all warning

i dont really want fix this mess that mediatek did here to get a clean build log
so lets disable the warning for now instead

6 years agoARM: add seccomp syscall
Kees Cook [Tue, 10 Jun 2014 22:40:23 +0000 (15:40 -0700)]
ARM: add seccomp syscall

Wires up the new seccomp syscall.

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Change-Id: I31a2d38b892e2cd81bf3998a916c7bb539a37767

6 years agoreplace lcm_mdelay with mdelay
Stricted [Fri, 16 Mar 2018 11:30:43 +0000 (12:30 +0100)]
replace lcm_mdelay with mdelay

6 years agoimport PULS_20180308
Stricted [Tue, 13 Mar 2018 19:30:12 +0000 (20:30 +0100)]
import PULS_20180308

6 years agoimport PULS_20160108
Stricted [Tue, 13 Mar 2018 19:29:02 +0000 (20:29 +0100)]
import PULS_20160108

9 years agoLinux 3.10.92
Greg Kroah-Hartman [Tue, 27 Oct 2015 00:45:05 +0000 (09:45 +0900)]
Linux 3.10.92

9 years agorbd: fix double free on rbd_dev->header_name
Ilya Dryomov [Mon, 31 Aug 2015 12:21:39 +0000 (15:21 +0300)]
rbd: fix double free on rbd_dev->header_name

commit 3ebe138ac642a195c7f2efdb918f464734421fd6 upstream.

If rbd_dev_image_probe() in rbd_dev_probe_parent() fails, header_name
is freed twice: once in rbd_dev_probe_parent() and then in its caller
rbd_dev_image_probe() (rbd_dev_image_probe() is called recursively to
handle parent images).

rbd_dev_probe_parent() is responsible for probing the parent, so it
shouldn't muck with clone's fields.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodm thin: fix missing pool reference count decrement in pool_ctr error path
Mike Snitzer [Tue, 13 Oct 2015 16:04:28 +0000 (12:04 -0400)]
dm thin: fix missing pool reference count decrement in pool_ctr error path

commit ba30670f4d5292c4e7f7980bbd5071f7c4794cdd upstream.

Fixes: ac8c3f3df ("dm thin: generate event when metadata threshold passed")
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoworkqueue: make sure delayed work run in local cpu
Shaohua Li [Wed, 30 Sep 2015 16:05:30 +0000 (09:05 -0700)]
workqueue: make sure delayed work run in local cpu

commit 874bbfe600a660cba9c776b3957b1ce393151b76 upstream.

My system keeps crashing with below message. vmstat_update() schedules a delayed
work in current cpu and expects the work runs in the cpu.
schedule_delayed_work() is expected to make delayed work run in local cpu. The
problem is timer can be migrated with NO_HZ. __queue_work() queues work in
timer handler, which could run in a different cpu other than where the delayed
work is scheduled. The end result is the delayed work runs in different cpu.
The patch makes __queue_delayed_work records local cpu earlier. Where the timer
runs doesn't change where the work runs with the change.

[   28.010131] ------------[ cut here ]------------
[   28.010609] kernel BUG at ../mm/vmstat.c:1392!
[   28.011099] invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC KASAN
[   28.011860] Modules linked in:
[   28.012245] CPU: 0 PID: 289 Comm: kworker/0:3 Tainted: G        W4.3.0-rc3+ #634
[   28.013065] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140709_153802- 04/01/2014
[   28.014160] Workqueue: events vmstat_update
[   28.014571] task: ffff880117682580 ti: ffff8800ba428000 task.ti: ffff8800ba428000
[   28.015445] RIP: 0010:[<ffffffff8115f921>]  [<ffffffff8115f921>]vmstat_update+0x31/0x80
[   28.016282] RSP: 0018:ffff8800ba42fd80  EFLAGS: 00010297
[   28.016812] RAX: 0000000000000000 RBX: ffff88011a858dc0 RCX:0000000000000000
[   28.017585] RDX: ffff880117682580 RSI: ffffffff81f14d8c RDI:ffffffff81f4df8d
[   28.018366] RBP: ffff8800ba42fd90 R08: 0000000000000001 R09:0000000000000000
[   28.019169] R10: 0000000000000000 R11: 0000000000000121 R12:ffff8800baa9f640
[   28.019947] R13: ffff88011a81e340 R14: ffff88011a823700 R15:0000000000000000
[   28.020071] FS:  0000000000000000(0000) GS:ffff88011a800000(0000)knlGS:0000000000000000
[   28.020071] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[   28.020071] CR2: 00007ff6144b01d0 CR3: 00000000b8e93000 CR4:00000000000006f0
[   28.020071] Stack:
[   28.020071]  ffff88011a858dc0 ffff8800baa9f640 ffff8800ba42fe00ffffffff8106bd88
[   28.020071]  ffffffff8106bd0b 0000000000000096 0000000000000000ffffffff82f9b1e8
[   28.020071]  ffffffff829f0b10 0000000000000000 ffffffff81f18460ffff88011a81e340
[   28.020071] Call Trace:
[   28.020071]  [<ffffffff8106bd88>] process_one_work+0x1c8/0x540
[   28.020071]  [<ffffffff8106bd0b>] ? process_one_work+0x14b/0x540
[   28.020071]  [<ffffffff8106c214>] worker_thread+0x114/0x460
[   28.020071]  [<ffffffff8106c100>] ? process_one_work+0x540/0x540
[   28.020071]  [<ffffffff81071bf8>] kthread+0xf8/0x110
[   28.020071]  [<ffffffff81071b00>] ?kthread_create_on_node+0x200/0x200
[   28.020071]  [<ffffffff81a6522f>] ret_from_fork+0x3f/0x70
[   28.020071]  [<ffffffff81071b00>] ?kthread_create_on_node+0x200/0x200

Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoi2c: rcar: enable RuntimePM before registering to the core
Wolfram Sang [Fri, 9 Oct 2015 09:39:25 +0000 (10:39 +0100)]
i2c: rcar: enable RuntimePM before registering to the core

commit 4f7effddf4549d57114289f273710f077c4c330a upstream.

The core may register clients attached to this master which may use
funtionality from the master. So, RuntimePM must be enabled before, otherwise
this will fail. While here, move drvdata, too.

Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agocrypto: ahash - ensure statesize is non-zero
Russell King [Fri, 9 Oct 2015 19:43:33 +0000 (20:43 +0100)]
crypto: ahash - ensure statesize is non-zero

commit 8996eafdcbad149ac0f772fb1649fbb75c482a6a upstream.

Unlike shash algorithms, ahash drivers must implement export
and import as their descriptors may contain hardware state and
cannot be exported as is.  Unfortunately some ahash drivers did
not provide them and end up causing crashes with algif_hash.

This patch adds a check to prevent these drivers from registering
ahash algorithms until they are fixed.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agocrypto: sparc - initialize blkcipher.ivsize
Dave Kleikamp [Mon, 5 Oct 2015 15:08:51 +0000 (10:08 -0500)]
crypto: sparc - initialize blkcipher.ivsize

commit a66d7f724a96d6fd279bfbd2ee488def6b081bea upstream.

Some of the crypto algorithms write to the initialization vector,
but no space has been allocated for it. This clobbers adjacent memory.

Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agom68k/uaccess: Fix asm constraints for userspace access
Geert Uytterhoeven [Sun, 9 Jun 2013 18:12:42 +0000 (20:12 +0200)]
m68k/uaccess: Fix asm constraints for userspace access

commit 631d8b674f5f8235e9cb7e628b0fe9e5200e3158 upstream.

When compiling a MMU kernel with CPU_HAS_ADDRESS_SPACES=n (e.g. "MMU=y
allnoconfig": "echo CONFIG_MMU=y > allno.config && make KCONFIG_ALLCONFIG=1
allnoconfig"), we use plain "move" instead of "moves", and I got:

  CC      arch/m68k/lib/uaccess.o
{standard input}: Assembler messages:
{standard input}:47: Error: operands mismatch -- statement `move.b %a0,(%a1)' ignored

This happens because plain "move" doesn't support byte transfers between
memory and address registers, while "moves" does.

Fix the asm constraints for __generic_copy_from_user(),
__generic_copy_to_user(), and __clear_user() to only use data registers
when accessing userspace.

Also, relax the asm constraints for 16-bit userspace accesses in
__put_user() and __get_user(), as both "move" and "moves" do support
such transfers between memory and address registers.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoasix: Do full reset during ax88772_bind
Charles Keepax [Thu, 6 Nov 2014 15:49:41 +0000 (15:49 +0000)]
asix: Do full reset during ax88772_bind

[ Upstream commit 436c2a5036b6ffe813310df2cf327d3b69be0734 ]

commit 3cc81d85ee01 ("asix: Don't reset PHY on if_up for ASIX 88772")
causes the ethernet on Arndale to no longer function. This appears to
be because the Arndale ethernet requires a full reset before it will
function correctly, however simply reverting the above patch causes
problems with ethtool settings getting reset.

It seems the problem is that the ethernet is not properly reset during
bind, and indeed the code in ax88772_bind that resets the device is a
very small subset of the actual ax88772_reset function. This patch uses
ax88772_reset in place of the existing reset code in ax88772_bind which
removes some code duplication and fixes the ethernet on Arndale.

It is still possible that the original patch causes some issues with
suspend and resume but that seems like a separate issue and I haven't
had a chance to test that yet.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Tested-by: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoasix: Don't reset PHY on if_up for ASIX 88772
Michel Stam [Thu, 2 Oct 2014 08:22:02 +0000 (10:22 +0200)]
asix: Don't reset PHY on if_up for ASIX 88772

[ Upstream commit 3cc81d85ee01e5a0b7ea2f4190e2ed1165f53c31 ]

I've noticed every time the interface is set to 'up,', the kernel
reports that the link speed is set to 100 Mbps/Full Duplex, even
when ethtool is used to set autonegotiation to 'off', half
duplex, 10 Mbps.
It can be tested by:
 ifconfig eth0 down
 ethtool -s eth0 autoneg off speed 10 duplex half
 ifconfig eth0 up

Then checking 'dmesg' for the link speed.

Signed-off-by: Michel Stam <m.stam@fugro.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoethtool: Use kcalloc instead of kmalloc for ethtool_get_strings
Joe Perches [Wed, 14 Oct 2015 08:09:40 +0000 (01:09 -0700)]
ethtool: Use kcalloc instead of kmalloc for ethtool_get_strings

[ Upstream commit 077cb37fcf6f00a45f375161200b5ee0cd4e937b ]

It seems that kernel memory can leak into userspace by a
kmalloc, ethtool_get_strings, then copy_to_user sequence.

Avoid this by using kcalloc to zero fill the copied buffer.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoppp: don't override sk->sk_state in pppoe_flush_dev()
Guillaume Nault [Wed, 30 Sep 2015 09:45:33 +0000 (11:45 +0200)]
ppp: don't override sk->sk_state in pppoe_flush_dev()

[ Upstream commit e6740165b8f7f06d8caee0fceab3fb9d790a6fed ]

Since commit 2b018d57ff18 ("pppoe: drop PPPOX_ZOMBIEs in pppoe_release"),
pppoe_release() calls dev_put(po->pppoe_dev) if sk is in the
PPPOX_ZOMBIE state. But pppoe_flush_dev() can set sk->sk_state to
PPPOX_ZOMBIE _and_ reset po->pppoe_dev to NULL. This leads to the
following oops:

[  570.140800] BUG: unable to handle kernel NULL pointer dereference at 00000000000004e0
[  570.142931] IP: [<ffffffffa018c701>] pppoe_release+0x50/0x101 [pppoe]
[  570.144601] PGD 3d119067 PUD 3dbc1067 PMD 0
[  570.144601] Oops: 0000 [#1] SMP
[  570.144601] Modules linked in: l2tp_ppp l2tp_netlink l2tp_core ip6_udp_tunnel udp_tunnel pppoe pppox ppp_generic slhc loop crc32c_intel ghash_clmulni_intel jitterentropy_rng sha256_generic hmac drbg ansi_cprng aesni_intel aes_x86_64 ablk_helper cryptd lrw gf128mul glue_helper acpi_cpufreq evdev serio_raw processor button ext4 crc16 mbcache jbd2 virtio_net virtio_blk virtio_pci virtio_ring virtio
[  570.144601] CPU: 1 PID: 15738 Comm: ppp-apitest Not tainted 4.2.0 #1
[  570.144601] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[  570.144601] task: ffff88003d30d600 ti: ffff880036b60000 task.ti: ffff880036b60000
[  570.144601] RIP: 0010:[<ffffffffa018c701>]  [<ffffffffa018c701>] pppoe_release+0x50/0x101 [pppoe]
[  570.144601] RSP: 0018:ffff880036b63e08  EFLAGS: 00010202
[  570.144601] RAX: 0000000000000000 RBX: ffff880034340000 RCX: 0000000000000206
[  570.144601] RDX: 0000000000000006 RSI: ffff88003d30dd20 RDI: ffff88003d30dd20
[  570.144601] RBP: ffff880036b63e28 R08: 0000000000000001 R09: 0000000000000000
[  570.144601] R10: 00007ffee9b50420 R11: ffff880034340078 R12: ffff8800387ec780
[  570.144601] R13: ffff8800387ec7b0 R14: ffff88003e222aa0 R15: ffff8800387ec7b0
[  570.144601] FS:  00007f5672f48700(0000) GS:ffff88003fc80000(0000) knlGS:0000000000000000
[  570.144601] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  570.144601] CR2: 00000000000004e0 CR3: 0000000037f7e000 CR4: 00000000000406a0
[  570.144601] Stack:
[  570.144601]  ffffffffa018f240 ffff8800387ec780 ffffffffa018f240 ffff8800387ec7b0
[  570.144601]  ffff880036b63e48 ffffffff812caabe ffff880039e4e000 0000000000000008
[  570.144601]  ffff880036b63e58 ffffffff812cabad ffff880036b63ea8 ffffffff811347f5
[  570.144601] Call Trace:
[  570.144601]  [<ffffffff812caabe>] sock_release+0x1a/0x75
[  570.144601]  [<ffffffff812cabad>] sock_close+0xd/0x11
[  570.144601]  [<ffffffff811347f5>] __fput+0xff/0x1a5
[  570.144601]  [<ffffffff811348cb>] ____fput+0x9/0xb
[  570.144601]  [<ffffffff81056682>] task_work_run+0x66/0x90
[  570.144601]  [<ffffffff8100189e>] prepare_exit_to_usermode+0x8c/0xa7
[  570.144601]  [<ffffffff81001a26>] syscall_return_slowpath+0x16d/0x19b
[  570.144601]  [<ffffffff813babb1>] int_ret_from_sys_call+0x25/0x9f
[  570.144601] Code: 48 8b 83 c8 01 00 00 a8 01 74 12 48 89 df e8 8b 27 14 e1 b8 f7 ff ff ff e9 b7 00 00 00 8a 43 12 a8 0b 74 1c 48 8b 83 a8 04 00 00 <48> 8b 80 e0 04 00 00 65 ff 08 48 c7 83 a8 04 00 00 00 00 00 00
[  570.144601] RIP  [<ffffffffa018c701>] pppoe_release+0x50/0x101 [pppoe]
[  570.144601]  RSP <ffff880036b63e08>
[  570.144601] CR2: 00000000000004e0
[  570.200518] ---[ end trace 46956baf17349563 ]---

pppoe_flush_dev() has no reason to override sk->sk_state with
PPPOX_ZOMBIE. pppox_unbind_sock() already sets sk->sk_state to
PPPOX_DEAD, which is the correct state given that sk is unbound and
po->pppoe_dev is NULL.

Fixes: 2b018d57ff18 ("pppoe: drop PPPOX_ZOMBIEs in pppoe_release")
Tested-by: Oleksii Berezhniak <core@irc.lg.ua>
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agonet: add pfmemalloc check in sk_add_backlog()
Eric Dumazet [Wed, 30 Sep 2015 01:52:25 +0000 (18:52 -0700)]
net: add pfmemalloc check in sk_add_backlog()

[ Upstream commit c7c49b8fde26b74277188bdc6c9dca38db6fa35b ]

Greg reported crashes hitting the following check in __sk_backlog_rcv()

BUG_ON(!sock_flag(sk, SOCK_MEMALLOC));

The pfmemalloc bit is currently checked in sk_filter().

This works correctly for TCP, because sk_filter() is ran in
tcp_v[46]_rcv() before hitting the prequeue or backlog checks.

For UDP or other protocols, this does not work, because the sk_filter()
is ran from sock_queue_rcv_skb(), which might be called _after_ backlog
queuing if socket is owned by user by the time packet is processed by
softirq handler.

Fixes: b4b9e35585089 ("netvm: set PF_MEMALLOC as appropriate during SKB processing")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Greg Thelen <gthelen@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoskbuff: Fix skb checksum partial check.
Pravin B Shelar [Tue, 29 Sep 2015 00:24:25 +0000 (17:24 -0700)]
skbuff: Fix skb checksum partial check.

[ Upstream commit 31b33dfb0a144469dd805514c9e63f4993729a48 ]

Earlier patch 6ae459bda tried to detect void ckecksum partial
skb by comparing pull length to checksum offset. But it does
not work for all cases since checksum-offset depends on
updates to skb->data.

Following patch fixes it by validating checksum start offset
after skb-data pointer is updated. Negative value of checksum
offset start means there is no need to checksum.

Fixes: 6ae459bda ("skbuff: Fix skb checksum flag on skb pull")
Reported-by: Andrew Vagin <avagin@odin.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoskbuff: Fix skb checksum flag on skb pull
Pravin B Shelar [Tue, 22 Sep 2015 19:57:53 +0000 (12:57 -0700)]
skbuff: Fix skb checksum flag on skb pull

[ Upstream commit 6ae459bdaaeebc632b16e54dcbabb490c6931d61 ]

VXLAN device can receive skb with checksum partial. But the checksum
offset could be in outer header which is pulled on receive. This results
in negative checksum offset for the skb. Such skb can cause the assert
failure in skb_checksum_help(). Following patch fixes the bug by setting
checksum-none while pulling outer header.

Following is the kernel panic msg from old kernel hitting the bug.

------------[ cut here ]------------
kernel BUG at net/core/dev.c:1906!
RIP: 0010:[<ffffffff81518034>] skb_checksum_help+0x144/0x150
Call Trace:
<IRQ>
[<ffffffffa0164c28>] queue_userspace_packet+0x408/0x470 [openvswitch]
[<ffffffffa016614d>] ovs_dp_upcall+0x5d/0x60 [openvswitch]
[<ffffffffa0166236>] ovs_dp_process_packet_with_key+0xe6/0x100 [openvswitch]
[<ffffffffa016629b>] ovs_dp_process_received_packet+0x4b/0x80 [openvswitch]
[<ffffffffa016c51a>] ovs_vport_receive+0x2a/0x30 [openvswitch]
[<ffffffffa0171383>] vxlan_rcv+0x53/0x60 [openvswitch]
[<ffffffffa01734cb>] vxlan_udp_encap_recv+0x8b/0xf0 [openvswitch]
[<ffffffff8157addc>] udp_queue_rcv_skb+0x2dc/0x3b0
[<ffffffff8157b56f>] __udp4_lib_rcv+0x1cf/0x6c0
[<ffffffff8157ba7a>] udp_rcv+0x1a/0x20
[<ffffffff8154fdbd>] ip_local_deliver_finish+0xdd/0x280
[<ffffffff81550128>] ip_local_deliver+0x88/0x90
[<ffffffff8154fa7d>] ip_rcv_finish+0x10d/0x370
[<ffffffff81550365>] ip_rcv+0x235/0x300
[<ffffffff8151ba1d>] __netif_receive_skb+0x55d/0x620
[<ffffffff8151c360>] netif_receive_skb+0x80/0x90
[<ffffffff81459935>] virtnet_poll+0x555/0x6f0
[<ffffffff8151cd04>] net_rx_action+0x134/0x290
[<ffffffff810683d8>] __do_softirq+0xa8/0x210
[<ffffffff8162fe6c>] call_softirq+0x1c/0x30
[<ffffffff810161a5>] do_softirq+0x65/0xa0
[<ffffffff810687be>] irq_exit+0x8e/0xb0
[<ffffffff81630733>] do_IRQ+0x63/0xe0
[<ffffffff81625f2e>] common_interrupt+0x6e/0x6e

Reported-by: Anupam Chanda <achanda@vmware.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoaf_unix: return data from multiple SKBs on recv() with MSG_PEEK flag
Aaron Conole [Sat, 26 Sep 2015 22:50:43 +0000 (18:50 -0400)]
af_unix: return data from multiple SKBs on recv() with MSG_PEEK flag

[ Upstream commit 9f389e35674f5b086edd70ed524ca0f287259725 ]

AF_UNIX sockets now return multiple skbs from recv() when MSG_PEEK flag
is set.

This is referenced in kernel bugzilla #12323 @
https://bugzilla.kernel.org/show_bug.cgi?id=12323

As described both in the BZ and lkml thread @
http://lkml.org/lkml/2008/1/8/444 calling recv() with MSG_PEEK on an
AF_UNIX socket only reads a single skb, where the desired effect is
to return as much skb data has been queued, until hitting the recv
buffer size (whichever comes first).

The modified MSG_PEEK path will now move to the next skb in the tree
and jump to the again: label, rather than following the natural loop
structure. This requires duplicating some of the loop head actions.

This was tested using the python socketpair python code attached to
the bugzilla issue.

Signed-off-by: Aaron Conole <aconole@bytheb.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoaf_unix: Convert the unix_sk macro to an inline function for type safety
Aaron Conole [Sat, 26 Sep 2015 22:50:42 +0000 (18:50 -0400)]
af_unix: Convert the unix_sk macro to an inline function for type safety

[ Upstream commit 4613012db1d911f80897f9446a49de817b2c4c47 ]

As suggested by Eric Dumazet this change replaces the
#define with a static inline function to enjoy
complaints by the compiler when misusing the API.

Signed-off-by: Aaron Conole <aconole@bytheb.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agol2tp: protect tunnel->del_work by ref_count
Alexander Couzens [Mon, 28 Sep 2015 09:32:42 +0000 (11:32 +0200)]
l2tp: protect tunnel->del_work by ref_count

[ Upstream commit 06a15f51cf3618e32a73871ee6a547ef7fd902b5 ]

There is a small chance that tunnel_free() is called before tunnel->del_work scheduled
resulting in a zero pointer dereference.

Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
Acked-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoLinux 3.10.91
Greg Kroah-Hartman [Thu, 22 Oct 2015 21:38:04 +0000 (14:38 -0700)]
Linux 3.10.91

9 years ago3w-9xxx: don't unmap bounce buffered commands
Christoph Hellwig [Sat, 3 Oct 2015 17:16:07 +0000 (19:16 +0200)]
3w-9xxx: don't unmap bounce buffered commands

commit 15e3d5a285ab9283136dba34bbf72886d9146706 upstream.

3w controller don't dma map small single SGL entry commands but instead
bounce buffer them.  Add a helper to identify these commands and don't
call scsi_dma_unmap for them.

Based on an earlier patch from James Bottomley.

Fixes: 118c85 ("3w-9xxx: fix command completion race")
Reported-by: Tóth Attila <atoth@atoth.sote.hu>
Tested-by: Tóth Attila <atoth@atoth.sote.hu>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agostaging: speakup: fix speakup-r regression
covici@ccs.covici.com [Wed, 20 May 2015 09:44:11 +0000 (05:44 -0400)]
staging: speakup: fix speakup-r regression

commit b1d562acc78f0af46de0dfe447410bc40bdb7ece upstream.

Here is a patch to make speakup-r work again.

It broke in 3.6 due to commit 4369c64c79a22b98d3b7eff9d089196cd878a10a
"Input: Send events one packet at a time)

The problem was that the fakekey.c routine to fake a down arrow no
longer functioned properly and putting the input_sync fixed it.

Fixes: 4369c64c79a22b98d3b7eff9d089196cd878a10a
Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: John Covici <covici@ccs.covici.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodm cache: fix NULL pointer when switching from cleaner policy
Joe Thornber [Fri, 9 Oct 2015 13:03:38 +0000 (14:03 +0100)]
dm cache: fix NULL pointer when switching from cleaner policy

commit 2bffa1503c5c06192eb1459180fac4416575a966 upstream.

The cleaner policy doesn't make use of the per cache block hint space in
the metadata (unlike the other policies).  When switching from the
cleaner policy to mq or smq a NULL pointer crash (in dm_tm_new_block)
was observed.  The crash was caused by bugs in dm-cache-metadata.c
when trying to skip creation of the hint btree.

The minimal fix is to change hint size for the cleaner policy to 4 bytes
(only hint size supported).

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agox86: Add 1/2/4/8 byte optimization to 64bit __copy_{from,to}_user_inatomic
Andi Kleen [Fri, 16 Aug 2013 21:17:19 +0000 (14:17 -0700)]
x86: Add 1/2/4/8 byte optimization to 64bit __copy_{from,to}_user_inatomic

commit ff47ab4ff3cddfa7bc1b25b990e24abe2ae474ff upstream.

The 64bit __copy_{from,to}_user_inatomic always called
copy_from_user_generic, but skipped the special optimizations for 1/2/4/8
byte accesses.

This especially hurts the futex call, which accesses the 4 byte futex
user value with a complicated fast string operation in a function call,
instead of a single movl.

Use __copy_{from,to}_user for _inatomic instead to get the same
optimizations. The only problem was the might_fault() in those functions.
So move that to new wrapper and call __copy_{f,t}_user_nocheck()
from *_inatomic directly.

32bit already did this correctly by duplicating the code.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1376687844-19857-2-git-send-email-andi@firstfloor.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agogenirq: Fix race in register_irq_proc()
Ben Hutchings [Sat, 26 Sep 2015 11:23:56 +0000 (12:23 +0100)]
genirq: Fix race in register_irq_proc()

commit 95c2b17534654829db428f11bcf4297c059a2a7e upstream.

Per-IRQ directories in procfs are created only when a handler is first
added to the irqdesc, not when the irqdesc is created.  In the case of
a shared IRQ, multiple tasks can race to create a directory.  This
race condition seems to have been present forever, but is easier to
hit with async probing.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Link: http://lkml.kernel.org/r/1443266636.2004.2.camel@decadent.org.uk
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agofib_rules: Fix dump_rules() not to exit early
Roland Dreier [Mon, 5 Oct 2015 17:29:28 +0000 (10:29 -0700)]
fib_rules: Fix dump_rules() not to exit early

Backports of 41fc014332d9 ("fib_rules: fix fib rule dumps across
multiple skbs") introduced a regression in "ip rule show" - it ends up
dumping the first rule over and over and never exiting, because 3.19
and earlier are missing commit 053c095a82cf ("netlink: make
nlmsg_end() and genlmsg_end() void"), so fib_nl_fill_rule() ends up
returning skb->len (i.e. > 0) in the success case.

Fix this by checking the return code for < 0 instead of != 0.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agobonding: correct the MAC address for "follow" fail_over_mac policy
dingtianhong [Thu, 16 Jul 2015 08:30:02 +0000 (16:30 +0800)]
bonding: correct the MAC address for "follow" fail_over_mac policy

[ Upstream commit a951bc1e6ba58f11df5ed5ddc41311e10f5fd20b ]

The "follow" fail_over_mac policy is useful for multiport devices that
either become confused or incur a performance penalty when multiple
ports are programmed with the same MAC address, but the same MAC
address still may happened by this steps for this policy:

1) echo +eth0 > /sys/class/net/bond0/bonding/slaves
   bond0 has the same mac address with eth0, it is MAC1.

2) echo +eth1 > /sys/class/net/bond0/bonding/slaves
   eth1 is backup, eth1 has MAC2.

3) ifconfig eth0 down
   eth1 became active slave, bond will swap MAC for eth0 and eth1,
   so eth1 has MAC1, and eth0 has MAC2.

4) ifconfig eth1 down
   there is no active slave, and eth1 still has MAC1, eth2 has MAC2.

5) ifconfig eth0 up
   the eth0 became active slave again, the bond set eth0 to MAC1.

Something wrong here, then if you set eth1 up, the eth0 and eth1 will have the same
MAC address, it will break this policy for ACTIVE_BACKUP mode.

This patch will fix this problem by finding the old active slave and
swap them MAC address before change active slave.

Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Tested-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to 3.10: bond_for_each_slave() takes an extra int paramter]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agom68k: Define asmlinkage_protect
Andreas Schwab [Wed, 23 Sep 2015 21:12:09 +0000 (23:12 +0200)]
m68k: Define asmlinkage_protect

commit 8474ba74193d302e8340dddd1e16c85cc4b98caf upstream.

Make sure the compiler does not modify arguments of syscall functions.
This can happen if the compiler generates a tailcall to another
function.  For example, without asmlinkage_protect sys_openat is compiled
into this function:

sys_openat:
clr.l %d0
move.w 18(%sp),%d0
move.l %d0,16(%sp)
jbra do_sys_open

Note how the fourth argument is modified in place, modifying the register
%d4 that gets restored from this stack slot when the function returns to
user-space.  The caller may expect the register to be unmodified across
system calls.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoarm64: readahead: fault retry breaks mmap file read random detection
Mark Salyzyn [Mon, 21 Sep 2015 20:39:50 +0000 (21:39 +0100)]
arm64: readahead: fault retry breaks mmap file read random detection

commit 569ba74a7ba69f46ce2950bf085b37fea2408385 upstream.

This is the arm64 portion of commit 45cac65b0fcd ("readahead: fault
retry breaks mmap file read random detection"), which was absent from
the initial port and has since gone unnoticed. The original commit says:

> .fault now can retry.  The retry can break state machine of .fault.  In
> filemap_fault, if page is miss, ra->mmap_miss is increased.  In the second
> try, since the page is in page cache now, ra->mmap_miss is decreased.  And
> these are done in one fault, so we can't detect random mmap file access.
>
> Add a new flag to indicate .fault is tried once.  In the second try, skip
> ra->mmap_miss decreasing.  The filemap_fault state machine is ok with it.

With this change, Mark reports that:

> Random read improves by 250%, sequential read improves by 40%, and
> random write by 400% to an eMMC device with dm crypto wrapped around it.

Cc: Shaohua Li <shli@kernel.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Mark Salyzyn <salyzyn@android.com>
Signed-off-by: Riley Andrews <riandrews@android.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agovfs: Test for and handle paths that are unreachable from their mnt_root
Eric W. Biederman [Sun, 16 Aug 2015 01:27:13 +0000 (20:27 -0500)]
vfs: Test for and handle paths that are unreachable from their mnt_root

commit 397d425dc26da728396e66d392d5dcb8dac30c37 upstream.

In rare cases a directory can be renamed out from under a bind mount.
In those cases without special handling it becomes possible to walk up
the directory tree to the root dentry of the filesystem and down
from the root dentry to every other file or directory on the filesystem.

Like division by zero .. from an unconnected path can not be given
a useful semantic as there is no predicting at which path component
the code will realize it is unconnected.  We certainly can not match
the current behavior as the current behavior is a security hole.

Therefore when encounting .. when following an unconnected path
return -ENOENT.

- Add a function path_connected to verify path->dentry is reachable
  from path->mnt.mnt_root.  AKA to validate that rename did not do
  something nasty to the bind mount.

  To avoid races path_connected must be called after following a path
  component to it's next path component.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodcache: Handle escaped paths in prepend_path
Eric W. Biederman [Sat, 15 Aug 2015 18:36:12 +0000 (13:36 -0500)]
dcache: Handle escaped paths in prepend_path

commit cde93be45a8a90d8c264c776fab63487b5038a65 upstream.

A rename can result in a dentry that by walking up d_parent
will never reach it's mnt_root.  For lack of a better term
I call this an escaped path.

prepend_path is called by four different functions __d_path,
d_absolute_path, d_path, and getcwd.

__d_path only wants to see paths are connected to the root it passes
in.  So __d_path needs prepend_path to return an error.

d_absolute_path similarly wants to see paths that are connected to
some root.  Escaped paths are not connected to any mnt_root so
d_absolute_path needs prepend_path to return an error greater
than 1.  So escaped paths will be treated like paths on lazily
unmounted mounts.

getcwd needs to prepend "(unreachable)" so getcwd also needs
prepend_path to return an error.

d_path is the interesting hold out.  d_path just wants to print
something, and does not care about the weird cases.  Which raises
the question what should be printed?

Given that <escaped_path>/<anything> should result in -ENOENT I
believe it is desirable for escaped paths to be printed as empty
paths.  As there are not really any meaninful path components when
considered from the perspective of a mount tree.

So tweak prepend_path to return an empty path with an new error
code of 3 when it encounters an escaped path.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoIB/qib: Change lkey table allocation to support more MRs
Mike Marciniszyn [Tue, 21 Jul 2015 12:36:07 +0000 (08:36 -0400)]
IB/qib: Change lkey table allocation to support more MRs

commit d6f1c17e162b2a11e708f28fa93f2f79c164b442 upstream.

The lkey table is allocated with with a get_user_pages() with an
order based on a number of index bits from a module parameter.

The underlying kernel code cannot allocate that many contiguous pages.

There is no reason the underlying memory needs to be physically
contiguous.

This patch:
- switches the allocation/deallocation to vmalloc/vfree
- caps the number of bits to 23 to insure at least 1 generation bit
  o this matches the module parameter description

Reviewed-by: Vinit Agnihotri <vinit.abhay.agnihotri@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoUBI: return ENOSPC if no enough space available
shengyong [Mon, 28 Sep 2015 17:57:19 +0000 (17:57 +0000)]
UBI: return ENOSPC if no enough space available

commit 7c7feb2ebfc9c0552c51f0c050db1d1a004faac5 upstream.

UBI: attaching mtd1 to ubi0
UBI: scanning is finished
UBI error: init_volumes: not enough PEBs, required 706, available 686
UBI error: ubi_wl_init: no enough physical eraseblocks (-20, need 1)
UBI error: ubi_attach_mtd_dev: failed to attach mtd1, error -12 <= NOT ENOMEM
UBI error: ubi_init: cannot attach mtd1

If available PEBs are not enough when initializing volumes, return -ENOSPC
directly. If available PEBs are not enough when initializing WL, return
-ENOSPC instead of -ENOMEM.

Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: David Gstir <david@sigma-star.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoUBI: Validate data_size
Richard Weinberger [Tue, 22 Sep 2015 21:58:07 +0000 (23:58 +0200)]
UBI: Validate data_size

commit 281fda27673f833a01d516658a64d22a32c8e072 upstream.

Make sure that data_size is less than LEB size.
Otherwise a handcrafted UBI image is able to trigger
an out of bounds memory access in ubi_compare_lebs().

Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: David Gstir <david@sigma-star.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agopowerpc/MSI: Fix race condition in tearing down MSI interrupts
Paul Mackerras [Thu, 10 Sep 2015 04:36:21 +0000 (14:36 +1000)]
powerpc/MSI: Fix race condition in tearing down MSI interrupts

commit e297c939b745e420ef0b9dc989cb87bda617b399 upstream.

This fixes a race which can result in the same virtual IRQ number
being assigned to two different MSI interrupts.  The most visible
consequence of that is usually a warning and stack trace from the
sysfs code about an attempt to create a duplicate entry in sysfs.

The race happens when one CPU (say CPU 0) is disposing of an MSI
while another CPU (say CPU 1) is setting up an MSI.  CPU 0 calls
(for example) pnv_teardown_msi_irqs(), which calls
msi_bitmap_free_hwirqs() to indicate that the MSI (i.e. its
hardware IRQ number) is no longer in use.  Then, before CPU 0 gets
to calling irq_dispose_mapping() to free up the virtal IRQ number,
CPU 1 comes in and calls msi_bitmap_alloc_hwirqs() to allocate an
MSI, and gets the same hardware IRQ number that CPU 0 just freed.
CPU 1 then calls irq_create_mapping() to get a virtual IRQ number,
which sees that there is currently a mapping for that hardware IRQ
number and returns the corresponding virtual IRQ number (which is
the same virtual IRQ number that CPU 0 was using).  CPU 0 then
calls irq_dispose_mapping() and frees that virtual IRQ number.
Now, if another CPU comes along and calls irq_create_mapping(), it
is likely to get the virtual IRQ number that was just freed,
resulting in the same virtual IRQ number apparently being used for
two different hardware interrupts.

To fix this race, we just move the call to msi_bitmap_free_hwirqs()
to after the call to irq_dispose_mapping().  Since virq_to_hw()
doesn't work for the virtual IRQ number after irq_dispose_mapping()
has been called, we need to call it before irq_dispose_mapping() and
remember the result for the msi_bitmap_free_hwirqs() call.

The pattern of calling msi_bitmap_free_hwirqs() before
irq_dispose_mapping() appears in 5 places under arch/powerpc, and
appears to have originated in commit 05af7bd2d75e ("[POWERPC] MPIC
U3/U4 MSI backend") from 2007.

Fixes: 05af7bd2d75e ("[POWERPC] MPIC U3/U4 MSI backend")
Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agomd: flush ->event_work before stopping array.
NeilBrown [Wed, 22 Jul 2015 00:20:07 +0000 (10:20 +1000)]
md: flush ->event_work before stopping array.

commit ee5d004fd0591536a061451eba2b187092e9127c upstream.

The 'event_work' worker used by dm-raid may still be running
when the array is stopped.  This can result in an oops.

So flush the workqueue on which it is run after detaching
and before destroying the device.

Reported-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Fixes: 9d09e663d550 ("dm: raid456 basic support")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoMIPS: dma-default: Fix 32-bit fall back to GFP_DMA
James Hogan [Fri, 27 Mar 2015 08:33:43 +0000 (08:33 +0000)]
MIPS: dma-default: Fix 32-bit fall back to GFP_DMA

commit 53960059d56ecef67d4ddd546731623641a3d2d1 upstream.

If there is a DMA zone (usually 24bit = 16MB I believe), but no DMA32
zone, as is the case for some 32-bit kernels, then massage_gfp_flags()
will cause DMA memory allocated for devices with a 32..63-bit
coherent_dma_mask to fall back to using __GFP_DMA, even though there may
only be 32-bits of physical address available anyway.

Correct that case to compare against a mask the size of phys_addr_t
instead of always using a 64-bit mask.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Fixes: a2e715a86c6d ("MIPS: DMA: Fix computation of DMA flags from device's coherent_dma_mask.")
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9610/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoUSB: Add reset-resume quirk for two Plantronics usb headphones.
Yao-Wen Mao [Mon, 31 Aug 2015 06:24:09 +0000 (14:24 +0800)]
USB: Add reset-resume quirk for two Plantronics usb headphones.

commit 8484bf2981b3d006426ac052a3642c9ce1d8d980 upstream.

These two headphones need a reset-resume quirk to properly resume to
original volume level.

Signed-off-by: Yao-Wen Mao <yaowen@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: Add device quirk for Logitech PTZ cameras
Vincent Palatin [Thu, 1 Oct 2015 21:10:22 +0000 (14:10 -0700)]
usb: Add device quirk for Logitech PTZ cameras

commit 72194739f54607bbf8cfded159627a2015381557 upstream.

Add a device quirk for the Logitech PTZ Pro Camera and its sibling the
ConferenceCam CC3000e Camera.
This fixes the failed camera enumeration on some boot, particularly on
machines with fast CPU.

Tested by connecting a Logitech PTZ Pro Camera to a machine with a
Haswell Core i7-4600U CPU @ 2.10GHz, and doing thousands of reboot cycles
while recording the kernel logs and taking camera picture after each boot.
Before the patch, more than 7% of the boots show some enumeration transfer
failures and in a few of them, the kernel is giving up before actually
enumerating the webcam. After the patch, the enumeration has been correct
on every reboot.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: Use the USB_SS_MULT() macro to get the burst multiplier.
Mathias Nyman [Mon, 21 Sep 2015 14:46:09 +0000 (17:46 +0300)]
usb: Use the USB_SS_MULT() macro to get the burst multiplier.

commit ff30cbc8da425754e8ab96904db1d295bd034f27 upstream.

Bits 1:0 of the bmAttributes are used for the burst multiplier.
The rest of the bits used to be reserved (zero), but USB3.1 takes bit 7
into use.

Use the existing USB_SS_MULT() macro instead to make sure the mult value
and hence max packet calculations are correct for USB3.1 devices.

Note that burst multiplier in bmAttributes is zero based and that
the USB_SS_MULT() macro adds one.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agosecurity: fix typo in security_task_prctl
Jann Horn [Fri, 18 Sep 2015 21:41:23 +0000 (23:41 +0200)]
security: fix typo in security_task_prctl

commit b7f76ea2ef6739ee484a165ffbac98deb855d3d3 upstream.

Signed-off-by: Jann Horn <jann@thejh.net>
Reviewed-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoregmap: debugfs: Don't bother actually printing when calculating max length
Mark Brown [Sat, 19 Sep 2015 14:12:34 +0000 (07:12 -0700)]
regmap: debugfs: Don't bother actually printing when calculating max length

commit 176fc2d5770a0990eebff903ba680d2edd32e718 upstream.

The in kernel snprintf() will conveniently return the actual length of
the printed string even if not given an output beffer at all so just do
that rather than relying on the user to pass in a suitable buffer,
ensuring that we don't need to worry if the buffer was truncated due to
the size of the buffer passed in.

Reported-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoregmap: debugfs: Ensure we don't underflow when printing access masks
Mark Brown [Sat, 19 Sep 2015 14:00:18 +0000 (07:00 -0700)]
regmap: debugfs: Ensure we don't underflow when printing access masks

commit b763ec17ac762470eec5be8ebcc43e4f8b2c2b82 upstream.

If a read is attempted which is smaller than the line length then we may
underflow the subtraction we're doing with the unsigned size_t type so
move some of the calculation to be additions on the right hand side
instead in order to avoid this.

Reported-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoudf: Check length of extended attributes and allocation descriptors
Jan Kara [Wed, 7 Jan 2015 12:49:08 +0000 (13:49 +0100)]
udf: Check length of extended attributes and allocation descriptors

commit 23b133bdc452aa441fcb9b82cbf6dd05cfd342d0 upstream.

Check length of extended attributes and allocation descriptors when
loading inodes from disk. Otherwise corrupted filesystems could confuse
the code and make the kernel oops.

Reported-by: Carl Henrik Lunde <chlunde@ping.uio.no>
Cc: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
[Jan and Jiri fixed it in 3.12 stable, i ported it to 3.10 stable,
 replaced bs by inode->i_sb->s_blocksize]
Signed-off-by: Zhang Zhen <zhenzhang.zhang@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoipvs: fix crash with sync protocol v0 and FTP
Julian Anastasov [Wed, 8 Jul 2015 05:31:33 +0000 (08:31 +0300)]
ipvs: fix crash with sync protocol v0 and FTP

commit 56184858d1fc95c46723436b455cb7261cd8be6f upstream.

Fix crash in 3.5+ if FTP is used after switching
sync_version to 0.

Fixes: 749c42b620a9 ("ipvs: reduce sync rate with time thresholds")
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoipvs: do not use random local source address for tunnels
Julian Anastasov [Sat, 27 Jun 2015 11:39:30 +0000 (14:39 +0300)]
ipvs: do not use random local source address for tunnels

commit 4754957f04f5f368792a0eb7dab0ae89fb93dcfd upstream.

Michael Vallaly reports about wrong source address used
in rare cases for tunneled traffic. Looks like
__ip_vs_get_out_rt in 3.10+ is providing uninitialized
dest_dst->dst_saddr.ip because ip_vs_dest_dst_alloc uses
kmalloc. While we retry after seeing EINVAL from routing
for data that does not look like valid local address, it
still succeeded when this memory was previously used from
other dests and with different local addresses. As result,
we can use valid local address that is not suitable for
our real server.

Fix it by providing 0.0.0.0 every time our cache is refreshed.
By this way we will get preferred source address from routing.

Reported-by: Michael Vallaly <lvs@nolatency.com>
Fixes: 026ace060dfe ("ipvs: optimize dst usage for real server")
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoInitialize msg/shm IPC objects before doing ipc_addid()
Linus Torvalds [Wed, 30 Sep 2015 16:48:40 +0000 (12:48 -0400)]
Initialize msg/shm IPC objects before doing ipc_addid()

commit b9a532277938798b53178d5a66af6e2915cb27cf upstream.

As reported by Dmitry Vyukov, we really shouldn't do ipc_addid() before
having initialized the IPC object state.  Yes, we initialize the IPC
object in a locked state, but with all the lockless RCU lookup work,
that IPC object lock no longer means that the state cannot be seen.

We already did this for the IPC semaphore code (see commit e8577d1f0329:
"ipc/sem.c: fully initialize sem_array before making it visible") but we
clearly forgot about msg and shm.

Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: xhci: Add support for URB_ZERO_PACKET to bulk/sg transfers
Reyad Attiyat [Thu, 6 Aug 2015 16:23:58 +0000 (19:23 +0300)]
usb: xhci: Add support for URB_ZERO_PACKET to bulk/sg transfers

commit 4758dcd19a7d9ba9610b38fecb93f65f56f86346 upstream.

This commit checks for the URB_ZERO_PACKET flag and creates an extra
zero-length td if the urb transfer length is a multiple of the endpoint's
max packet length.

Signed-off-by: Reyad Attiyat <reyad.attiyat@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Cc: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoxhci: change xhci 1.0 only restrictions to support xhci 1.1
Mathias Nyman [Mon, 21 Sep 2015 14:46:16 +0000 (17:46 +0300)]
xhci: change xhci 1.0 only restrictions to support xhci 1.1

commit dca7794539eff04b786fb6907186989e5eaaa9c2 upstream.

Some changes between xhci 0.96 and xhci 1.0 specifications forced us to
check the hci version in code, some of these checks were implemented as
hci_version == 1.0, which will not work with new xhci 1.1 controllers.

xhci 1.1 behaves similar to xhci 1.0 in these cases, so change these
checks to hci_version >= 1.0

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agousb: xhci: Clear XHCI_STATE_DYING on start
Roger Quadros [Mon, 21 Sep 2015 14:46:13 +0000 (17:46 +0300)]
usb: xhci: Clear XHCI_STATE_DYING on start

commit e5bfeab0ad515b4f6df39fe716603e9dc6d3dfd0 upstream.

For whatever reason if XHCI died in the previous instant
then it will never recover on the next xhci_start unless we
clear the DYING flag.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoUSB: whiteheat: fix potential null-deref at probe
Johan Hovold [Wed, 23 Sep 2015 18:41:42 +0000 (11:41 -0700)]
USB: whiteheat: fix potential null-deref at probe

commit cbb4be652d374f64661137756b8f357a1827d6a4 upstream.

Fix potential null-pointer dereference at probe by making sure that the
required endpoints are present.

The whiteheat driver assumes there are at least five pairs of bulk
endpoints, of which the final pair is used for the "command port". An
attempt to bind to an interface with fewer bulk endpoints would
currently lead to an oops.

Fixes CVE-2015-5257.

Reported-by: Moein Ghasemzadeh <moein@istuary.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agodrm: Reject DRI1 hw lock ioctl functions for kms drivers
Daniel Vetter [Tue, 23 Jun 2015 09:34:21 +0000 (11:34 +0200)]
drm: Reject DRI1 hw lock ioctl functions for kms drivers

commit da168d81b44898404d281d5dbe70154ab5f117c1 upstream.

I've done some extensive history digging across libdrm, mesa and
xf86-video-{intel,nouveau,ati}. The only potential user of this with
kms drivers I could find was ttmtest, which once used drmGetLock
still. But that mistake was quickly fixed up. Even the intel xvmc
library (which otherwise was really good with using dri1 stuff in kms
mode) managed to never take the hw lock for dri2 (and hence kms).

Hence it should be save to unconditionally disallow this.

Cc: Peter Antoine <peter.antoine@intel.com>
Reviewed-by: Peter Antoine <peter.antoine@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>