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git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
ASoC: SOF: Don't allow pointer operations on unconfigured streams
When reporting the pointer for a compressed stream we report the current
I/O frame position by dividing the position by the number of channels
multiplied by the number of container bytes. These values default to 0 and
are only configured as part of setting the stream parameters so this allows
a divide by zero to be configured. Validate that they are non zero,
returning an error if not
Fixes: c1a731c71359 ("ASoC: SOF: compress: Add support for computing timestamps")
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260326-asoc-compress-tstamp-params-v1-1-3dc735b3d599@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
+3
+3
sound/soc/sof/compress.c
+3
sound/soc/sof/compress.c
···
381
381
if (!spcm)
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return -EINVAL;
383
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384
+
if (!sstream->channels || !sstream->sample_container_bytes)
385
+
return -EBUSY;
386
+
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tstamp->sampling_rate = sstream->sampling_rate;
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tstamp->copied_total = sstream->copied_total;
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tstamp->pcm_io_frames = div_u64(spcm->stream[cstream->direction].posn.dai_posn,