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linux/sound
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Takashi Iwai 094fd3be87 ALSA: timer: Fix leftover link at closing 
In ALSA timer core, the active timer instance is managed in
active_list linked list.  Each element is added / removed dynamically
at timer start, stop and in timer interrupt.  The problem is that
snd_timer_interrupt() has a thinko and leaves the element in
active_list when it's the last opened element.  This eventually leads
to list corruption or use-after-free error.

This hasn't been revealed because we used to delete the list forcibly
in snd_timer_stop() in the past.  However, the recent fix avoids the
double-stop behavior (in commit [f784beb75c: ALSA: timer: Fix link
corruption due to double start or stop]), and this leak hits reality.

This patch fixes the link management in snd_timer_interrupt().  Now it
simply unlinks no matter which stream is.

BugLink: http://lkml.kernel.org/r/CACT4Y+Yy2aukHP-EDp8-ziNqNNmb-NTf=jDWXMP7jB8HDa2vng@mail.gmail.com
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-02-04 17:19:09 +01:00
..
aoa
arm
atmel
core ALSA: timer: Fix leftover link at closing 2016-02-04 17:19:09 +01:00
drivers ALSA: dummy: Disable switching timer backend via sysfs 2016-01-28 08:13:54 +01:00
firewire ALSA: bebob: Use a signed return type for get_formation_index 2016-01-26 11:38:53 +01:00
hda ALSA: hda - Degrade i915 binding failure message 2016-01-20 15:00:26 +01:00
i2c
isa ALSA: Add missing dependency on CONFIG_SND_TIMER 2016-01-27 07:10:38 +01:00
mips
oss
parisc
pci ALSA: hda - Add fixup for Mac Mini 7,1 model 2016-02-03 12:32:51 +01:00
pcmcia
ppc
sh
soc ARM: SoC multiplatform code changes for v4.5 2016-01-20 18:03:56 -08:00
sparc ALSA: Add missing dependency on CONFIG_SND_TIMER 2016-01-27 07:10:38 +01:00
spi ALSA: at73c213: manage SSC clock 2016-01-20 09:59:27 +01:00
synth ALSA: emux: constify nrpn_conv_table structures 2016-01-06 10:19:49 +01:00
usb ALSA: usb-audio: Add quirk for Microsoft LifeCam HD-6000 2016-01-29 17:25:39 +01:00
ac97_bus.c
Kconfig
last.c
Makefile
sound_core.c
sound_firmware.c