| LOR |
lock order reversal
1st 0xc076cbc0 vm page queue mutex (vm page queue mutex) @ sys/kern/vfs_bio.c:1485
2nd 0xc1cabc58 vnode interlock (vnode interlock) @ sys/kern/vfs_subr.c:1993
KDB: stack backtrace:
kdb_backtrace(0,ffffffff,c0722088,c0720ad0,c06e75e8) at kdb_backtrace+0x29
witness_checkorder(c1cabc58,9,c06b564a,7c9) at witness_checkorder+0x550
_mtx_lock_flags(c1cabc58,0,c06b564a,7c9,c1c7c18c) at _mtx_lock_flags+0x5b
vdrop(c1cabbdc) at vdrop+0x1d
vm_page_remove(c173f1a0,c173f1a0) at vm_page_remove+0xd4
vm_page_free_toq(c173f1a0,c173f1a0,40,c173f1a0,dab40860) at vm_page_free_toq+0x90
vm_page_free(c173f1a0,c173f1a0) at vm_page_free+0x15
vfs_vmio_release(cbec8ae8) at vfs_vmio_release+0x9b
brelse(cbec8ae8,2,0,25a,2) at brelse+0x485
softdep_setup_freeblocks(c1c6c108,0,0,800,c075ec88) at softdep_setup_freeblocks+0x7e4
ffs_truncate(c1cabbdc,0,0,800,c199c780,c1c13d80) at ffs_truncate+0x54e
ufs_setattr(dab40b7c) at ufs_setattr+0x25d
VOP_SETATTR_APV(c06f93a0,dab40b7c) at VOP_SETATTR_APV+0x7e
kern_open(c1c13d80,8049756,0,402,1b6) at kern_open+0x662
open(c1c13d80,dab40d04,3,4,202) at open+0x1a
syscall(3b,3b,3b,8,28149880) at syscall+0x213
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (5, FreeBSD ELF32, open), eip = 0x280b7953, esp = 0xbfbfed3c, ebp = 0xbfbfed68 ---
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