panic: sound mutex assertion failure

panic: _mtx_lock_sleep: recursed on non-recursive mutex pcm0 
_at_ ../../../dev/sound/pcm/sound.c:395

at line 436 in file ../../../kern/kern_mutex.c

syncing disks, buffers remaining... 2169 panic: bremfree: removing a buffer 
not on a queue
at line 647 in file ../../../kern/vfs_bio.cUptime: 3m31s
Dumping 1023 MB
 16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 256 272 288 304 320 336 
352 368 384 400 416 432 448 464 480 496 512 528 544 560 576 592 608 624 640 
656 672 688 704 720 736 752 768 784 800 816 832 848 864 880 896 912 928 944 
960 976 992 1008
---
(kgdb) where
#0  doadump () at ../../../kern/kern_shutdown.c:240
#1  0xc0581e1c in boot (howto=260) at ../../../kern/kern_shutdown.c:374
#2  0xc0582186 in poweroff_wait (junk=0xc074a317, howto=647)
    at ../../../kern/kern_shutdown.c:552
#3  0xc05c450c in bremfreel (bp=0xe7a83748) at ../../../kern/vfs_bio.c:647
#4  0xc05c43cc in bremfree (bp=0x0) at ../../../kern/vfs_bio.c:629
#5  0xc05c7f45 in getblk (vp=0x0, blkno=12000, size=4096, slpflag=0,
    slptimeo=0, flags=0) at ../../../kern/vfs_bio.c:2466
#6  0xc0687ff4 in ffs_sbupdate (mp=0xc6541500, waitfor=2)
    at ../../../ufs/ffs/ffs_vfsops.c:1499
#7  0xc0687990 in ffs_sync (mp=0xc654dc00, waitfor=2, cred=0xc2272e80,
    td=0xc07c0800) at ../../../ufs/ffs/ffs_vfsops.c:1224
#8  0xc05d9a09 in sync (td=0xc07c0800, uap=0x0)
    at ../../../kern/vfs_syscalls.c:141
#9  0xc0581a4b in boot (howto=256) at ../../../kern/kern_shutdown.c:306
#10 0xc0582186 in poweroff_wait (junk=0xc0744aa9, howto=436)
    at ../../../kern/kern_shutdown.c:552
#11 0xc0578a3e in _mtx_lock_sleep (m=0xe7a83904, opts=0, file=0x0, line=0)
    at ../../../kern/kern_mutex.c:479
#12 0xc0578658 in _mtx_lock_flags (m=0x0, opts=0,
    file=0xc0739490 "../../../dev/sound/pcm/sound.c", line=395)
    at ../../../kern/kern_mutex.c:251
#13 0xc051983d in pcm_chn_create (d=0xc6319800, parent=0x0, cls=0x0,
    dir=-1066167152, devinfo=0x0) at ../../../dev/sound/pcm/sound.c:395
#14 0xc051b26c in vchan_create (parent=0xc6300a80)
    at ../../../dev/sound/pcm/vchan.c:265
#15 0xc0519259 in pcm_chnalloc (d=0xc6319800, direction=1, pid=720, chnum=-1)
    at ../../../dev/sound/pcm/sound.c:209
#16 0xc051482c in dsp_open (i_dev=0xc07c2eb0, flags=7, mode=8192,
    td=0xc68653f0) at ../../../dev/sound/pcm/dsp.c:274
#17 0xc054871d in spec_open (ap=0xe7a83a64)
    at ../../../fs/specfs/spec_vnops.c:207
#18 0xc0548470 in spec_vnoperate (ap=0x0)
    at ../../../fs/specfs/spec_vnops.c:122
#19 0xc05e1a4e in vn_open_cred (ndp=0xe7a83bdc, flagp=0xe7a83cdc, cmode=0,
    cred=0xc68cd580, fdidx=0) at vnode_if.h:228
#20 0xc05e1623 in vn_open (ndp=0x0, flagp=0x0, cmode=0, fdidx=0)
    at ../../../kern/vfs_vnops.c:93
#21 0xc05dae8b in kern_open (td=0xc68653f0, path=0x0, pathseg=UIO_USERSPACE,
    flags=7, mode=0) at ../../../kern/vfs_syscalls.c:963
#22 0xc05dadb7 in open (td=0x0, uap=0x0) at ../../../kern/vfs_syscalls.c:933

FreeBSD slimer.baldwin.cx 5.2-CURRENT FreeBSD 5.2-CURRENT #10: Thu Feb 12 
16:00:40 EST 2004     root_at_slimer.baldwin.cx:/usr/src/sys/i386/compile/SLIMER  
i386

-- 
John Baldwin <jhb_at_FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org