[Bug 296682] uaudio: panic: _mtx_lock_sleep: recursed on non-recursive mutex uaudio mixer lock @ /usr/src/sys/dev/sound/usb/uaudio.c:5399

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From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 11 Jul 2026 01:05:59 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=296682

            Bug ID: 296682
           Summary: uaudio: panic: _mtx_lock_sleep: recursed on
                    non-recursive mutex uaudio mixer lock @
                    /usr/src/sys/dev/sound/usb/uaudio.c:5399
           Product: Base System
           Version: 16.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: fbsd@opal.com

16-current kernel of 20260710.

Boot system.
Insert USB snd_uaudio dongle Jabra 390a.

system panics.

panic: _mtx_lock_sleep: recursed on non-recursive mutex uaudio mixer lock @
/usr/src/sys/dev/sound/usb/uaudio.c:5399

Can send core.txt and other debug if needed.

Dongle/driver were fine on 16-cur kernel of 20260404.

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