diff options
| author | Wenkai Du <wenkai.du@intel.com> | 2014-04-23 13:29:30 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-04-23 12:11:20 +0100 |
| commit | d132cb0a162fa55c82e06b771fcaa871d30c9398 (patch) | |
| tree | 73bb32ad7e94188caf7ecbc992a3eb6b12eefdba /sound/soc/intel/sst-dsp.c | |
| parent | 95e9ee92e20162681e9f65c25962e0606db9d149 (diff) | |
ASoC: Intel: Fix audio crash due to race condition in stream deletion
There is a race between sst_byt_stream_free() and sst_byt_get_stream()
if sst_byt_get_stream() called from sst_byt_irq_thread() context is
accessing the byt->stream_list while a stream is deleted from the list.
A stream is added to byt->stream_list in sst_byt_stream_new() and deleted in
sst_byt_stream_free(). sst_byt_get_stream() is always protected by
sst->spinlock, but the stream addition and deletion are not protected.
The patch adds spinlock to both stream addition and deletion.
[Jarkko: Same fix added to sst-haswell-ipc.c too]
Signed-off-by: Wenkai Du <wenkai.du@intel.com>
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound/soc/intel/sst-dsp.c')
0 files changed, 0 insertions, 0 deletions