audio: mux: Fix use of incorrect macro#10838
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Pull request overview
This PR fixes a logic error in the DEMUX pre-start trigger path where the wrong buffer-component accessor prevented the cross-pipeline comparison from ever succeeding, making audio_stream_set_overrun() unreachable.
Changes:
- Replace
comp_buffer_get_sink_component()withcomp_buffer_get_source_component()when checking pipeline ownership for producer buffers indemux_trigger().
Comment on lines
294
to
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| comp_dev_for_each_producer(mod->dev, b) { | ||
| if (comp_buffer_get_sink_component(b)->pipeline != mod->dev->pipeline) | ||
| if (comp_buffer_get_source_component(b)->pipeline != mod->dev->pipeline) | ||
| audio_stream_set_overrun(&b->stream, true); |
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I'm developing (with the help of AI) custom semgrep rules that will detect incorrect use of macros (mostly related to sink/source api). This PR is fixing one (and only) finding in current code. Here is scan result: ┌────────────────┐
│ 1 Code Finding │
└────────────────┘
src/audio/mux/mux.c
❯❯❱ scripts.scan.semgrep.sof-producer-loop-wrong-component-getter
❰❰ Blocking ❱❱
comp_buffer_get_sink_component() called on producer buffer 'b' inside a comp_dev_for_each_producer
loop. In this loop, dev is buf->source, so get_sink_component(b) returns dev itself — not the
upstream neighbour. Use comp_buffer_get_source_component(b) instead.
295┆ if (comp_buffer_get_sink_component(b)->pipeline != mod->dev->pipeline)@lyakh @softwarecki can you help review and verify that scan is working correctly. |
tmleman
requested review from
abonislawski,
kv2019i,
lyakh,
serhiy-katsyuba-intel,
softwarecki and
wjablon1
serhiy-katsyuba-intel
approved these changes
Jun 3, 2026
kv2019i
approved these changes
Jun 3, 2026
comp_buffer_get_sink_component(b) inside a for_each_producer loop returns mux itself, making the pipeline comparison always false and audio_stream_set_overrun() unreachable. Issue found using semgrep with custom rules. Signed-off-by: Tomasz Leman <tomasz.m.leman@intel.com>
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comp_buffer_get_sink_component(b) inside a for_each_producer loop returns mux itself, making the pipeline comparison always false and audio_stream_set_overrun() unreachable.
Issue found using semgrep with custom rules.