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| author | Takashi Iwai <tiwai@suse.de> | 2016-02-08 17:26:58 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2016-02-09 12:23:42 +0100 |
| commit | 4dff5c7b7093b19c19d3a100f8a3ad87cb7cd9e7 (patch) | |
| tree | f2b107d1d85650e5a9efb06f1f13da19e8644648 /sound/core/pcm_timer.c | |
| parent | ed8b1d6d2c741ab26d60d499d7fbb7ac801f0f51 (diff) | |
| download | linux-4dff5c7b7093b19c19d3a100f8a3ad87cb7cd9e7.tar.bz2 | |
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>
Diffstat (limited to 'sound/core/pcm_timer.c')
0 files changed, 0 insertions, 0 deletions