From owner-freebsd-current@FreeBSD.ORG Fri Sep 10 10:45:09 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B971A16A4CE for ; Fri, 10 Sep 2004 10:45:09 +0000 (GMT) Received: from transport.cksoft.de (transport.cksoft.de [62.111.66.27]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2D06D43D1F for ; Fri, 10 Sep 2004 10:45:09 +0000 (GMT) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from transport.cksoft.de (localhost [127.0.0.1]) by transport.cksoft.de (Postfix) with ESMTP id 5FA561FFDD9; Fri, 10 Sep 2004 12:45:07 +0200 (CEST) Received: by transport.cksoft.de (Postfix, from userid 66) id 50FC21FFDD8; Fri, 10 Sep 2004 12:45:05 +0200 (CEST) Received: by mail.int.zabbadoz.net (Postfix, from userid 1060) id 1A5641567C; Fri, 10 Sep 2004 10:40:49 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mail.int.zabbadoz.net (Postfix) with ESMTP id 16C7215329; Fri, 10 Sep 2004 10:40:50 +0000 (UTC) Date: Fri, 10 Sep 2004 10:40:50 +0000 (UTC) From: "Bjoern A. Zeeb" X-X-Sender: bz@e0-0.zab2.int.zabbadoz.net To: Marian Cerny In-Reply-To: <20040910102211.GA15808@artax.karlin.mff.cuni.cz> Message-ID: References: <20040907163133.GA24426@artax.karlin.mff.cuni.cz> <20040908133452.GA11639@artax.karlin.mff.cuni.cz> <20040910102211.GA15808@artax.karlin.mff.cuni.cz> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Virus-Scanned: by AMaViS cksoft-s20020300-20031204bz on transport.cksoft.de cc: freebsd-current@freebsd.org Subject: Re: LOR (re0 and user map) + PANIC X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Sep 2004 10:45:09 -0000 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