LOR+PANIC in 7.0-CURRENT

Bjoern A. Zeeb bzeeb-lists at lists.zabbadoz.net
Wed Dec 28 16:35:11 PST 2005


On Tue, 27 Dec 2005, Goran Gajic wrote:

Hi,

> 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 ---

the LOR seems to be a result of the trap. Nonetheless I have added
it with ID 175
 	http://sources.zabbadoz.net/freebsd/lor.html#175
to the LOR page.

-- 
Bjoern A. Zeeb				bzeeb at Zabbadoz dot NeT


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