mux: validation fixes#10885
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Pull request overview
This PR tightens validation for the mux component configuration in both IPC4 and IPC3 paths to prevent out-of-bounds indexing and to fail fast on unsupported “mixing” configurations.
Changes:
- IPC4: add validation for host-supplied channel counts and source queue IDs; propagate validation failures via return codes.
- IPC3: make
mux_mix_check()failure return-EINVALinstead of only logging an error.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.
| File | Description |
|---|---|
src/audio/mux/mux_ipc4.c |
Adds IPC4 config/param validation and error propagation for invalid channel counts and queue IDs. |
src/audio/mux/mux_ipc3.c |
Ensures mux channel-mixing validation failures abort parameter setup with -EINVAL. |
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kv2019i
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Added one more IPC4 check for copilot & validated all possible formats in IPC4 tests |
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lgirdwood
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Jun 12, 2026
build_config() looped over host-supplied channels_count writing streams[].mask[] (size PLATFORM_MAX_CHANNELS), overflowing it. Reject counts above the max. Signed-off-by: Adrian Bonislawski <adrian.bonislawski@intel.com>
set_mux_params() indexed streams[] with the host-supplied bind queue ID without bounds, allowing an OOB write. Validate against MUX_MAX_STREAMS and propagate the error. Signed-off-by: Adrian Bonislawski <adrian.bonislawski@intel.com>
mux_set_values() logged a mux_mix_check() failure but still returned success, applying an invalid routing matrix. Return -EINVAL, matching the IPC4 path. Signed-off-by: Adrian Bonislawski <adrian.bonislawski@intel.com>
tmleman
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Jun 12, 2026
lyakh
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Jun 12, 2026
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Cosmetic changes only |
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