> Retain references to the pages backing ALSA's vmalloc buffer until its
> queued I/O messages are freed. On NOMMU systems, use driver-owned memory
> for DMA and copy playback data before submission and capture data after
> completion, so ALSA buffer release cannot invalidate an active request.
>
> Validate the PCM buffer and each period before building scatterlists.
> Clamp device-reported capture lengths to the message capacity before
> advancing the hardware pointer, preventing an oversized completion from
> accounting bytes beyond the buffer actually submitted.
>
> Fixes: f40a28679e0b ("ALSA: virtio: handling control and I/O messages for the
> PCM device")
> Assisted-by: LLM
> Signed-off-by: Joonho Lee <[email protected]>
Sashiko has reviewed this patch and found no issues. It looks great!
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Sashiko AI review ยท
https://sashiko.dev/#/patchset/[email protected]?part=4
