| commit | 4dff5c7b7093b19c19d3a100f8a3ad87cb7cd9e7 | [log] [tgz] |
|---|---|---|
| author | Takashi Iwai <tiwai@suse.de> | Mon Feb 08 17:26:58 2016 +0100 |
| committer | Takashi Iwai <tiwai@suse.de> | Tue Feb 09 12:23:42 2016 +0100 |
| tree | f2b107d1d85650e5a9efb06f1f13da19e8644648 | |
| parent | ed8b1d6d2c741ab26d60d499d7fbb7ac801f0f51 [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>