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| author | Takashi Iwai <tiwai@suse.de> | 2017-02-06 15:09:48 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-14 15:22:52 -0800 |
| commit | a44ca389a7363b2160b2dd9b81f0175eab78e858 (patch) | |
| tree | 85ced8c298925a0d3d19396640d70ad46675b8f7 /drivers/pcmcia/sa11xx_base.c | |
| parent | e5f20a3fd6dbdc3db409aa786899e60754562e1a (diff) | |
ALSA: seq: Don't handle loop timeout at snd_seq_pool_done()
commit 37a7ea4a9b81f6a864c10a7cb0b96458df5310a3 upstream.
snd_seq_pool_done() syncs with closing of all opened threads, but it
aborts the wait loop with a timeout, and proceeds to the release
resource even if not all threads have been closed. The timeout was 5
seconds, and if you run a crazy stuff, it can exceed easily, and may
result in the access of the invalid memory address -- this is what
syzkaller detected in a bug report.
As a fix, let the code graduate from naiveness, simply remove the loop
timeout.
BugLink: http://lkml.kernel.org/r/CACT4Y+YdhDV2H5LLzDTJDVF-qiYHUHhtRaW4rbb4gUhTCQB81w@mail.gmail.com
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/pcmcia/sa11xx_base.c')
0 files changed, 0 insertions, 0 deletions