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| author | Takashi Iwai <tiwai@suse.de> | 2016-02-08 17:26:58 +0100 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-12-08 17:52:01 +0100 |
| commit | f230e8d0341012b9a41072abd14c0facaf24dff2 (patch) | |
| tree | b447d29f9be7edf0a611a4d56ca52e8b33287a23 /include/linux/err.h | |
| parent | 6b26d90d9a53b6829a2d742210d77c1c4dc7386b (diff) | |
BACKPORT: 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.
Bug: 37240993
Change-Id: I7358a57638ef23eb7f97341eaee1f0dd4ba2795a
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Siqi Lin <siqilin@google.com>
(cherry picked from commit 4dff5c7b7093b19c19d3a100f8a3ad87cb7cd9e7)
Diffstat (limited to 'include/linux/err.h')
0 files changed, 0 insertions, 0 deletions