Date: Sun, 17 Oct 2004 09:24:31 +0000 (UTC) From: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> To: Volker <volker@vwsoft.com> Cc: freebsd-current@freebsd.org Subject: Re: LOR ath Message-ID: <Pine.BSF.4.53.0410170923490.59402@e0-0.zab2.int.zabbadoz.net> In-Reply-To: <4171D04C.8070601@vwsoft.com> References: <4171D04C.8070601@vwsoft.com>
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On Sun, 17 Oct 2004, Volker wrote: > Whenever if_ath is loaded or unloaded, the ahc0 driver enters the game. > > After that (kldload), my kernel told me about a LOR: > > lock order reversal > 1st 0xc1a1bc58 ath0 (network driver) @ > /usr/src/sys/modules/ath/../../dev/ath/i > f_ath.c:893 > 2nd 0xc184f620 user map (user map) @ /usr/src/sys/vm/vm_map.c:2997 > KDB: stack backtrace: > kdb_backtrace(0,ffffffff,c0728ee8,c072a388,c06d17ec) at kdb_backtrace+0x29 > witness_checkorder(c184f620,9,c06a7966,bb5) at witness_checkorder+0x540 > _sx_xlock(c184f620,c06a7966,bb5) at _sx_xlock+0x50 > _vm_map_lock_read(c184f5dc,c06a7966,bb5,2000000,c16f3e8c) at > _vm_map_lock_read+0 > x3b > vm_map_lookup(cc7a29dc,8055000,2,cc7a29e0,cc7a29d0) at vm_map_lookup+0x26 > vm_fault(c184f5dc,8055000,2,8,c15907d0) at vm_fault+0x69 > trap_pfault(cc7a2aa4,0,8055000) at trap_pfault+0xf2 > trap(18,10,10,8055000,c16cae00) at trap+0x351 > calltrap() at calltrap+0x5 for the archives. I added this as LOR 042: http://sources.zabbadoz.net/freebsd/lor.html#042 -- Bjoern A. Zeeb bzeeb at Zabbadoz dot NeT
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