linux/sound/drivers
Takashi Iwai 7ee96216c3 ALSA: dummy: Disable switching timer backend via sysfs
ALSA dummy driver can switch the timer backend between system timer
and hrtimer via its hrtimer module option.  This can be also switched
dynamically via sysfs, but it may lead to a memory corruption when
switching is done while a PCM stream is running; the stream instance
for the newly switched timer method tries to access the memory that
was allocated by another timer method although the sizes differ.

As the simplest fix, this patch just disables the switch via sysfs by
dropping the writable bit.

BugLink: http://lkml.kernel.org/r/CACT4Y+ZGEeEBntHW5WHn2GoeE0G_kRrCmUh6=dWyy-wfzvuJLg@mail.gmail.com
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-01-28 08:13:54 +01:00
..
mpu401 ALSA: Include linux/io.h instead of asm/io.h 2015-01-28 16:49:33 +01:00
opl3 Merge branch 'for-linus' into for-next 2015-03-09 08:42:00 +01:00
opl4 ALSA: opl4: Fix / cleanup ifdef CONFIG_PROC_FS 2015-05-29 07:49:55 +02:00
pcsp ALSA: drivers: pcsp: Fix printout of resolution 2015-05-12 09:14:51 +02:00
vx ALSA: Include linux/io.h instead of asm/io.h 2015-01-28 16:49:33 +01:00
Kconfig ALSA: sound kconfig typo 2013-04-24 14:02:36 +02:00
Makefile ALSA: introduce the snd-aloop module for the PCM loopback 2010-08-09 14:21:11 +02:00
aloop.c ALSA: aloop: Drop unnecessary ifdef CONFIG_PROC_FS 2015-05-29 07:46:05 +02:00
dummy.c ALSA: dummy: Disable switching timer backend via sysfs 2016-01-28 08:13:54 +01:00
ml403-ac97cr.c ALSA: Deletion of checks before the function call "iounmap" 2015-01-04 15:13:45 +01:00
mtpav.c ALSA: mtpav: Use setup_timer() and mod_timer() 2015-01-19 11:32:10 +01:00
mts64.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
pcm-indirect2.c treewide: Fix typos in printk 2015-12-08 14:59:19 +01:00
pcm-indirect2.h [ALSA] Xilinx ML403 AC97 Controller Reference device driver 2008-01-31 17:29:15 +01:00
portman2x4.c ALSA: drivers: drop owner assignment from platform_drivers 2014-10-20 16:21:59 +02:00
serial-u16550.c ALSA: Include linux/io.h instead of asm/io.h 2015-01-28 16:49:33 +01:00
virmidi.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00