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FreeBSD lock order reversal (LOR) #48

ID 48
state unknown
responsible
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LOR
lock order reversal
 1st 0xc1b07268 fxp1 (network driver) @ sys/dev/fxp/if_fxp.c:2389
 2nd 0xc19aae54 user map (user map) @ sys/vm/vm_map.c:2994
		
KDB: stack backtrace:
witness_checkorder(c19aae54,9,c08f78a5,bb2,3f5b8d74)
at witness_checkorder+0x5c6
_sx_xlock(c19aae54,c08f78a5,bb2,26602a4,0) at _sx_xlock+0x5d
vm_map_lookup(da8766f4,0,2,da8766f8,da8766e8) at vm_map_lookup+0x3a
vm_fault(c19aae10,0,2,8,c1dde000) at vm_fault+0x7a
trap_pfault(0,c08bcc89,c1b07268,da8767bc,0) at trap_pfault+0x166
trap(c09a0018,c1dd0010,10,c1b07000,c1b076b4) at trap+0x363
calltrap() at calltrap+0x5
--- trap 0xc, eip = 0xc05460fe, esp = 0xda87681c, ebp = 0xda876834 ---
		
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