Date: Fri, 10 Sep 2004 10:40:50 +0000 (UTC) From: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> To: Marian Cerny <jojo@matfyz.cz> Cc: freebsd-current@freebsd.org Subject: Re: LOR (re0 and user map) + PANIC Message-ID: <Pine.BSF.4.53.0409101040030.51837@e0-0.zab2.int.zabbadoz.net> In-Reply-To: <20040910102211.GA15808@artax.karlin.mff.cuni.cz> References: <20040907163133.GA24426@artax.karlin.mff.cuni.cz> <Pine.BSF.4.53.0409081203020.51837@e0-0.zab2.int.zabbadoz.net> <20040908133452.GA11639@artax.karlin.mff.cuni.cz> <Pine.BSF.4.53.0409081429070.51837@e0-0.zab2.int.zabbadoz.net> <20040910102211.GA15808@artax.karlin.mff.cuni.cz>
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On Fri, 10 Sep 2004, Marian Cerny wrote: > lock order reversal > 1st 0xc177b6e8 re0 (network driver) @ /usr/src/sys/dev/re/if_re.c:1752 > 2nd 0xc08adee4 user map (user map) @ /usr/src/sys/vm/vm_map.c:2997 > KDB: stack backtrace: > kdb_backtrace(0,ffffffff,c08bde68,c08beb88,c084ddac) at kdb_backtrace+0x29 > withness_checkorder(c08adee4,9,c0808137,bb5) at witness_checkorder+0x544 > _sx_xlock(c08adee4,c0808137,bb5) at _sx_xlock+0x50 > _vm_map_lock_read(c08adea0,c0808137,bb5,20000004,c16bae6c) at _vm_map_lock_read+0x37 > vm_map_lookup(ceef9bb8,0,2,ceef9bbc,ceef9bac) at vm_map_lookup+0x28 > vm_fault(c08adea0,0,2,8,c16b5b00) at vm_fault+0x66 > trap_pfault(ceef9c80,0,c) at trap_pgault+0xf2 > trap(18,10,10,0,3b) at trap+0x335 > calltrap() at calltrap+0x5 this first half looks pretty much the same as http://sources.zabbadoz.net/freebsd/lor.html#031 1st 0xc08ec200 ifnet (ifnet) @ sys/net/if.c:1489 2nd 0xc46703c8 user map (user map) @ sys/vm/vm_map.c:2994 > --- trap 0xc, eip = 0xc0575b76, esp = 0xceef9cc0, ebp = 0xceef9cdc --- > re_rxeof(c177b000) at re_rxeof+0x2ae > re_intr(c177b000) at re_intr+0xb3 > ithread_loop(c16bf400,ceef9d48,c16bf400,c05ed66c,0) at ithread_loop+0x124 > fork_exit(c05ed66c,c16bf400,ceef9d48) at fork_exit+0xa4 > fork_trampoline() at fork_trampoline+0x8 > --- trap 0x1, eip = 0, esp = exceef9d7c, ebp = 0 --- -- Bjoern A. Zeeb bzeeb at Zabbadoz dot NeT
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