# DF-2591 trigger A -- device_shutdown(dev) via rig worker (hw.panasim.cmd=9)
# baseline kernel #4, 2026-10-19; extracted from the serial console log
# before the QEMU serial file was recycled by the next boot
# (full trigger-B capture with backtrace survives in panic_reboot.txt)

panic: assertion "lockstatus(&panasonic_serial, curthread) == LK_EXCLUSIVE" failed in hkey_sound_mute at /usr/src/sys/dev/acpica/panasim/acpi_panasonic_verbatim.c:374
Debugger("panic")
Stopped at      Debugger+0x7c:  movb    $0,0xbdd659(%rip)