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Differential D45898

sound: Add missing CHN_[UN]LOCKs in sndstat
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Authored by christos on Jul 6 2024, 3:05 PM.
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markj
emaste
dev_submerge.ch
Commits
rGfab137d23462: sound: Add missing CHN_[UN]LOCKs in sndstat
rGe850bd36dfda: sound: Add missing CHN_[UN]LOCKs in sndstat
Summary

For sndstat_build_sound4_nvlist(), if we have INVARIANTS or
SND_DIAGNOSTIC enabled, we will hit an lock assertion panic when we call
CHN_GETVOLUME(). Also lock the channel in the sndstat_prepare_pcm() loop
for good measure.

Fixes: bbca3a75bb41 ("sound: Include sound(4) channel information in sndstat nvlist")
Sponsored by: The FreeBSD Foundation
MFC after: 2 days

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rG FreeBSD src repository
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sys/
dev/
sound/
pcm/
8 lines

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sys/dev/sound/pcm/sndstat.c

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