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FreeBSD lock order reversal (LOR) #164

ID 164
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LOR
lock order reversal
 1st 0xc07586c0 cdev (cdev) @ sys/kern/kern_conf.c:79
 2nd 0xc579f68c process lock (process lock) @ sys/i386/i386/trap.c:724
		
KDB: stack backtrace:
kdb_backtrace(0,ffffffff,c076b068,c076b540,c07320a4) at 0xc054f309 = kdb_backtrace+0x29
witness_checkorder(c579f68c,9,c0710496,2d4) at 0xc055917c = witness_checkorder+0x564
_mtx_lock_flags(c579f68c,0,c0710496,2d4,c5734180) at 0xc052f7bf = _mtx_lock_flags+0x5b
trap_pfault(e99dc7e4,0,30) at 0xc06aedda = trap_pfault+0x92
trap(c0750008,c0760028,c0750028,c59c3000,c573a400) at 0xc06aeb19 = trap+0x319
calltrap() at 0xc069d04a = calltrap+0x5
--- trap 0xc, eip = 0xc0513625, esp = 0xe99dc824, ebp = 0xe99dc848 ---
		
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