]> git.baikalelectronics.ru Git - kernel.git/commit
projects / kernel.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 5b491a0) | patch
ALSA: timer: Fix race at concurrent reads
authorTakashi Iwai <tiwai@suse.de>
Mon, 8 Feb 2016 16:26:58 +0000 (17:26 +0100)
committerTakashi Iwai <tiwai@suse.de>
Tue, 9 Feb 2016 11:23:42 +0000 (12:23 +0100)
commit3d820103abefc9f07713a05e474b99885ae7b539
treef2b107d1d85650e5a9efb06f1f13da19e8644648tree | snapshot
parent5b491a08fcff74e85d814ab2007433a929fface6commit | diff
ALSA: timer: Fix race at concurrent reads

snd_timer_user_read() has a potential race among parallel reads, as
qhead and qused are updated outside the critical section due to
copy_to_user() calls.  Move them into the critical section, and also
sanitize the relevant code a bit.

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/core/timer.c diff | blob | history
Linux Kernel Source Tree.