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| author | Christos Margiolis <christos@FreeBSD.org> | 2024-04-28 19:40:29 +0000 |
|---|---|---|
| committer | Christos Margiolis <christos@FreeBSD.org> | 2024-04-28 19:48:24 +0000 |
| commit | b18b990d8e7b15d25243d85ea22374dfdde8a18b (patch) | |
| tree | 015d4a4143b6057c1271851f5eced3ed4b973ff9 /sys/dev/sound/pcm/dsp.c | |
| parent | 074d6fbebc160222cde6b726adcc7350881d7824 (diff) | |
| download | src-b18b990d8e7b15d25243d85ea22374dfdde8a18b.tar.gz src-b18b990d8e7b15d25243d85ea22374dfdde8a18b.zip | |
sound: Wrap dsp_clone() and mixer_clone() with bus_topo_lock()
Make sure that the softc isn't freed in between the checks.
Sponsored by: The FreeBSD Foundation
MFC after; 1 day
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D44991
Diffstat (limited to 'sys/dev/sound/pcm/dsp.c')
| -rw-r--r-- | sys/dev/sound/pcm/dsp.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/dev/sound/pcm/dsp.c b/sys/dev/sound/pcm/dsp.c index c5bb27530d2b..df1482d6a97a 100644 --- a/sys/dev/sound/pcm/dsp.c +++ b/sys/dev/sound/pcm/dsp.c @@ -2085,6 +2085,7 @@ dsp_clone(void *arg, struct ucred *cred, char *name, int namelen, } return; found: + bus_topo_lock(); d = devclass_get_softc(pcm_devclass, snd_unit); /* * If we only have a single soundcard attached and we detach it right @@ -2096,6 +2097,7 @@ found: *dev = d->dsp_dev; dev_ref(*dev); } + bus_topo_unlock(); } static void |