lang: en

FreeBSD lock order reversal (LOR) #95

ID 95
state unknown
responsible
reported first
reported last
do you know more? submit update by email
LOR
lock order reversal
 1st 0xc0961fe0 Softdep Lock (Softdep Lock) @ ufs/ffs/ffs_softdep.c:3390
 2nd 0xc09053c4 user map (user map) @ vm/vm_map.c:2997
		
KDB: stack backtrace:
kdb_backtrace(0,ffffffff,c09179a0,c0917e00,...) at kdb_backtrace+0x29
witness_checkorder(c09053c4,9,c085a8da,bb5) at witness_checkorder+0x55c
_sx_xlock(c09053c4,c085a8d1,bb5) at _sx_xlock+0x50
_vm_map_lock_read(c0905380,c085a8d1,...) at _vm_map_lock_read+0x37
vm_map_lookup(cea73b5c,0,1,cea73b60,cea73b50) at vm_map_lookup+0x28
vm_fault(c0905380,0,1,0,c1751a80) at vm_fault+0x66
trap_pfault(cea73c24,0,20) at trap_pfault+0xf2
trap(cea70008,c0640028,c0950028,c1751a80,c219ea60) at trap+0x33d
calltrap() at calltrap+0x5
--- trap 0xc, eip = 0xc0755fd9, esp = 0xcea73c64, ebp = 0xcea73c94 ---
		
comments/references