redonkable/alistair23-linux
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alistair23-linux/sound/core
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Takashi Iwai af368027a4 ALSA: timer: Fix race among timer ioctls 
ALSA timer ioctls have an open race and this may lead to a
use-after-free of timer instance object.  A simplistic fix is to make
each ioctl exclusive.  We have already tread_sem for controlling the
tread, and extend this as a global mutex to be applied to each ioctl.

The downside is, of course, the worse concurrency.  But these ioctls
aren't to be parallel accessible, in anyway, so it should be fine to
serialize there.

Reported-by: Dmitry Vyukov <dvyukov@google.com>
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-01-14 14:07:21 +01:00
..
oss ALSA: oss: consolidate kmalloc/memset 0 call to kzalloc 2015-12-20 22:31:02 +01:00
seq ALSA: seq: Fix race at timer setup and close 2016-01-12 17:50:41 +01:00
compress_offload.c ALSA: compress: add support for 32bit calls in a 64bit kernel 2015-12-07 10:44:48 +01:00
control.c ALSA: ctl: fix to handle several elements added by one operation for userspace element 2015-04-13 10:31:49 +02:00
control_compat.c
ctljack.c ALSA: jack: Fix endless loop at unique index detection 2015-06-26 06:59:57 +02:00
device.c Merge branch 'topic/hda-unbind' into for-next 2015-03-16 14:48:20 +01:00
hrtimer.c sound: Use hrtimer_resolution instead of hrtimer_get_res() 2015-04-22 17:06:48 +02:00
hwdep.c ALSA: replace CONFIG_PROC_FS with CONFIG_SND_PROC_FS 2015-05-27 21:25:19 +02:00
hwdep_compat.c
info.c ALSA: info: Drop kerneldoc comment from snd_info_create_entry() 2015-05-18 09:45:11 +02:00
info_oss.c ALSA: core: Clean up OSS proc file management 2015-04-24 17:31:08 +02:00
init.c ALSA: hda_intel: add card number to irq description 2016-01-12 21:05:16 +01:00
isadma.c
jack.c ALSA: jack: Remove MODULE_*() macros 2015-05-21 11:32:51 +02:00
Kconfig ALSA: timer: add config item to export PCM timer disabling for expert 2015-10-16 14:31:38 +02:00
Makefile ALSA: timer: add config item to export PCM timer disabling for expert 2015-10-16 14:31:38 +02:00
memalloc.c genalloc: rename of_get_named_gen_pool() to of_gen_pool_get() 2015-06-30 19:45:01 -07:00
memory.c
misc.c
pcm.c ALSA: pcm: remove structure member of 'struct snd_pcm_hwptr_log *' type because this structure had been removed 2015-09-13 12:03:15 +02:00
pcm_compat.c ALSA: core: pass audio tstamp config from userspace in compat mode 2015-02-20 17:30:05 +01:00
pcm_dmaengine.c ALSA: Fix spelling typo in Documentation/DocBook/alsa-driver-api.xml 2015-03-04 12:12:59 +01:00
pcm_drm_eld.c ALSA: pcm: add DRM ELD helper 2015-05-22 16:01:44 +02:00
pcm_iec958.c ALSA: pcm: add IEC958 channel status helper 2015-05-22 16:01:47 +02:00
pcm_lib.c ALSA: Constify ratden/ratnum constraints 2015-10-28 11:42:22 +01:00
pcm_memory.c
pcm_misc.c
pcm_native.c ALSA: pcm: constify action_ops structures 2015-11-30 11:39:13 +01:00
pcm_timer.c
pcm_trace.h
rawmidi.c ALSA: core: Drop superfluous error/debug messages after malloc failures 2015-03-10 15:42:14 +01:00
rawmidi_compat.c
rtctimer.c
sgbuf.c
sound.c ALSA: replace CONFIG_PROC_FS with CONFIG_SND_PROC_FS 2015-05-27 21:25:19 +02:00
sound_oss.c ALSA: replace CONFIG_PROC_FS with CONFIG_SND_PROC_FS 2015-05-27 21:25:19 +02:00
timer.c ALSA: timer: Fix race among timer ioctls 2016-01-14 14:07:21 +01:00
timer_compat.c
vmaster.c