git: 64f4e2db6d19 - main - sound: Correctly check nvlist_unpack() error

[Christos Margiolis]

The branch main has been updated by christos:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=64f4e2db6d19d8ab520903a197fcaa8cc7ab9f9a

commit 64f4e2db6d19d8ab520903a197fcaa8cc7ab9f9a
Author:     Christos Margiolis <chris...@freebsd.org>
AuthorDate: 2024-05-20 14:18:33 +0000
Commit:     Christos Margiolis <chris...@freebsd.org>
CommitDate: 2024-05-20 14:18:33 +0000

    sound: Correctly check nvlist_unpack() error
    
    The current check is never false and if nvlist_unpack() fails, we might
    panic later down the road.
    
    PR:             266144
    Sponsored by:   The FreeBSD Foundation
    MFC after:      1 day
    Reviewed by:    dev_submerge.ch, emaste
    Differential Revision:  https://reviews.freebsd.org/D45237
---
 sys/dev/sound/pcm/sndstat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/dev/sound/pcm/sndstat.c b/sys/dev/sound/pcm/sndstat.c
index f310d8f3bff3..bbcb2fda7c29 100644
--- a/sys/dev/sound/pcm/sndstat.c
+++ b/sys/dev/sound/pcm/sndstat.c
@@ -705,7 +705,7 @@ sndstat_unpack_user_nvlbuf(const void *unvlbuf, size_t 
nbytes, nvlist_t **nvl)
        }
        *nvl = nvlist_unpack(nvlbuf, nbytes, 0);
        free(nvlbuf, M_DEVBUF);
-       if (nvl == NULL) {
+       if (*nvl == NULL) {
                return (EINVAL);
        }