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sound: Prevent uninitialized variable destruction in chn_init()
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Authored by christos on May 20 2024, 2:03 PM.

Details

Reviewers

markj
emaste

Commits

rGbca6f391aed9: sound: Prevent uninitialized variable destruction in chn_init()
rG5d1a5d6f1f59: sound: Prevent uninitialized variable destruction in chn_init()

Summary

If dsp_unit2name() fails, we'll get to out2 with b, bs and devinfo
uninitialized, which will result in a panic.

Reported by: Pierre Pronchery <pierre@freebsdfoundation.org>
Reported by: Coverity Scan
CID: 1545029, 1545025
Pull-request: https://github.com/freebsd/freebsd-src/pull/1240
Sponsored by: The FreeBSD Foundation
MFC after: 1 day

Diff Detail

Repository

rG FreeBSD src repository

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Lint Not Applicable

Unit

Tests Not Applicable

Event Timeline

christos created this revision.May 20 2024, 2:03 PM

Herald added a subscriber: imp. · View Herald TranscriptMay 20 2024, 2:03 PM

christos requested review of this revision.May 20 2024, 2:03 PM

Harbormaster completed remote builds in B57790: Diff 138784.May 20 2024, 2:03 PM

markj accepted this revision.May 20 2024, 2:08 PM

markj added inline comments.

sys/dev/sound/pcm/channel.c
1252	These assignments are redundant since `c` was allocated with M_ZERO. You could just get rid of them.

This revision is now accepted and ready to land.May 20 2024, 2:08 PM

christos marked an inline comment as done.May 20 2024, 2:12 PM

christos added inline comments.

sys/dev/sound/pcm/channel.c
1252	D45273

Address Mark's comment.

This revision now requires review to proceed.May 20 2024, 2:12 PM

Harbormaster completed remote builds in B57792: Diff 138786.May 20 2024, 2:12 PM

christos added a parent revision: D45273: sound: Get rid of redundant assignments in chn_init().May 20 2024, 2:12 PM

markj added inline comments.May 20 2024, 2:13 PM

sys/dev/sound/pcm/channel.c
1252	It should just be done in a single patch, IMHO, but ok.

emaste accepted this revision.May 20 2024, 2:15 PM

This revision is now accepted and ready to land.May 20 2024, 2:15 PM

Closed by commit rG5d1a5d6f1f59: sound: Prevent uninitialized variable destruction in chn_init() (authored by christos). · Explain WhyMay 20 2024, 2:15 PM

This revision was automatically updated to reflect the committed changes.

christos added a commit: rG5d1a5d6f1f59: sound: Prevent uninitialized variable destruction in chn_init().

christos added a commit: rGbca6f391aed9: sound: Prevent uninitialized variable destruction in chn_init().May 21 2024, 5:54 PM

Revision Contents
Changeset List

Path

Size

sys/

dev/

sound/

pcm/

channel.c

4 lines

Diff 138788

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sys/dev/sound/pcm/channel.c

sound: Prevent uninitialized variable destruction in chn_init()ClosedPublicActions