ffs_blkfree panic + lockmgr panic

["Simon 'corecode' Schubert" <corecode@xxxxxxxxxxxx>]

hey,

this is the Nth time now i'm running into free frag or free block panics.  either vinum is doing something very wrong or it is just interacting with ffs on a bad way.  anyways, here it comes:

Unread portion of the kernel message buffer:
dev = #ad/0x20003, block = 12332, fs = /var
panic: ffs_blkfree: freeing free frag

syncing disks... Warning: vfsync_bp skipping dirty buffer 0xc244b200
13 Warning: vfsync_bp skipping dirty buffer 0xc244b200
1 Warning: vfsync_bp skipping dirty buffer 0xc244b200
1 Warning: vfsync_bp skipping dirty buffer 0xc244b200
1 Warning: vfsync_bp skipping dirty buffer 0xc244b200
1 Warning: vfsync_bp skipping dirty buffer 0xc244b200
1 Warning: vfsync_bp skipping dirty buffer 0xc244b200
1 Warning: vfsync_bp skipping dirty buffer 0xc244b200
1 panic: lockmgr: locking against myself

#2  0xc0178de5 in panic (fmt=0xc02cb0e8 "lockmgr: locking against myself")
   at /usr/build/src/sys/kern/kern_shutdown.c:684
#3  0xc016ef15 in lockmgr (lkp=0xc244b318, flags=33554466)
   at /usr/build/src/sys/kern/kern_lock.c:353
#4  0xc01b1b29 in getblk (vp=0xce304600, loffset=Unhandled dwarf expression opcode 0x93
) at buf2.h:92
#5  0xc01af720 in bread (vp=0xce304600, loffset=Unhandled dwarf expression opcode 0x93
) at /usr/build/src/sys/kern/vfs_bio.c:617
#6  0xc022540c in ffs_freefile (pvp=0x0, ino=21339, mode=33188)
   at /usr/build/src/sys/vfs/ufs/ffs_alloc.c:1686
#7  0xc022ba7f in handle_workitem_freefile (freefile=0xc21e29c0)
   at /usr/build/src/sys/vfs/ufs/ffs_softdep.c:3039
#8  0xc0228454 in process_worklist_item (matchmnt=0x0, flags=0)
   at /usr/build/src/sys/vfs/ufs/ffs_softdep.c:741
#9  0xc022821b in softdep_process_worklist (matchmnt=0x0)
   at /usr/build/src/sys/vfs/ufs/ffs_softdep.c:626
#10 0xc017869e in boot (howto=256) at /usr/build/src/sys/kern/kern_shutdown.c:295
#11 0xc0178de5 in panic (fmt=0xc02d5fe8 "ffs_blkfree: freeing free frag")
   at /usr/build/src/sys/kern/kern_shutdown.c:684
#12 0xc0224ea6 in ffs_blkfree (ip=0xd2557c00, bno=12328, size=4)
   at /usr/build/src/sys/vfs/ufs/ffs_alloc.c:1572
#13 0xc022a87f in handle_workitem_freeblocks (freeblks=0xc2327308)
   at /usr/build/src/sys/vfs/ufs/ffs_softdep.c:2268
#14 0xc0228422 in process_worklist_item (matchmnt=0x0, flags=0)
   at /usr/build/src/sys/vfs/ufs/ffs_softdep.c:727
#15 0xc022821b in softdep_process_worklist (matchmnt=0x0)
   at /usr/build/src/sys/vfs/ufs/ffs_softdep.c:626
#16 0xc01c441c in sched_sync () at /usr/build/src/sys/kern/vfs_sync.c:244
#17 0xc016dd55 in kthread_create_stk (func=0, arg=0x0, tdp=0xce2ec500, stksize=0, fmt=0x0)
   at /usr/build/src/sys/kern/kern_kthread.c:102

for some reason it is *always* /dev

cheers
 simon

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