LOR+PANIC in 7.0-CURRENT
Goran Gajic
ggajic at afrodita.rcub.bg.ac.yu
Tue Dec 27 13:44:05 PST 2005
FreeBSD 7.0-CURRENT FreeBSD 7.0-CURRENT #16: Mon Dec 26 19:39:26 CET 2005
root@:/usr/src/sys/i386/compile/TEST i386
lock order reversal: (sleepable after non-sleepable)
1st 0xc2b77498 inp (tcpinp) @ netinet/tcp_input.c:743
2nd 0xc0967ec4 user map (user map) @ vm/vm_map.c:2993
KDB: stack backtrace:
kdb_backtrace(0,ffffffff,c0977848,c0977488,c092ad8c) at kdb_backtrace+0x29
witness_checkorder(c0967ec4,9,c08b631d,bb1) at witness_checkorder+0x580
_sx_xlock(c0967ec4,c08b6314,bb1) at _sx_xlock+0x50
_vm_map_lock_read(c0967e80,c08b6314,bb1,216da80,c216c6ec) at _vm_map_lock_read+0x33
vm_map_lookup(cbfd9888,0,2,cbfd988c,cbfd987c) at vm_map_lookup+0x28
vm_fault(c0967e80,0,2,8,c216da80) at vm_fault+0x65
trap_pfault(cbfd99a4,0,44) at trap_pfault+0xee
trap(c2160008,cbfd0028,c0690028,44,c28baa63) at trap+0x3cd
calltrap() at calltrap+0x5
--- trap 0xc, eip = 0xc0829b36, esp = 0xcbfd99e4, ebp = 0xcbfd9a14 ---
generic_bcopy(c28baa63,6d,c228a438,c228a438,c0929784) at generic_bcopy+0x1a
pppasyncstart(c243a600,c227210c,0,c08a5fee,3af) at pppasyncstart+0x108
pppoutput(c2272000,c2a52500,c2846330,c2437ba0,c2849c00) at pppoutput+0x2b2
ip_output(c2a52500,0,cbfd9ac8,0,0) at ip_output+0x7b6
tcp_output(c2b74c94) at tcp_output+0xff6
tcp_input(c2a52400,14,138,16055b93,0) at tcp_input+0x2bff
ip_input(c2a52400) at ip_input+0x5a1
netisr_processqueue(c09b5098) at netisr_processqueue+0x6e
swi_net(0) at swi_net+0xc2
ithread_execute_handlers(c216c684,c216a400) at ithread_execute_handlers+0xe6
ithread_loop(c21566f0,cbfd9d38,c21566f0,c0659f00,0) at ithread_loop+0x66
fork_exit(c0659f00,c21566f0,cbfd9d38) at fork_exit+0xa4
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcbfd9d6c, ebp = 0 ---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x0
fault code = supervisor read, page not present
instruction pointer = 0x20:0xc0829b36
stack pointer = 0x28:0xcca66c5c
frame pointer = 0x28:0xcca66c88
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 28 (swi0: sio)
For some reason I couldn't use kgdb to do bactrace:
# kgdb /usr/src/sys/i386/compile/TEST/kernel.debug /var/crash/vmcore.0
kgdb: cannot read PTD
#
Regards,
gg.
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