From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: Kernel panic in fib_rules_lookup (kernel 2.6.32) Date: Tue, 09 Mar 2010 18:09:28 +0100 Message-ID: <1268154568.3113.19.camel@edumazet-laptop> References: <119601268120674@webmail87.yandex.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: netdev@vger.kernel.org To: "\"Oleg A. Arkhangelsky\"" Return-path: Received: from mail-bw0-f209.google.com ([209.85.218.209]:64152 "EHLO mail-bw0-f209.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755103Ab0CIRJd (ORCPT ); Tue, 9 Mar 2010 12:09:33 -0500 Received: by bwz1 with SMTP id 1so4100131bwz.21 for ; Tue, 09 Mar 2010 09:09:32 -0800 (PST) In-Reply-To: <119601268120674@webmail87.yandex.ru> Sender: netdev-owner@vger.kernel.org List-ID: Le mardi 09 mars 2010 =C3=A0 10:44 +0300, "Oleg A. Arkhangelsky" a =C3=A9= crit : > Hello, >=20 > Got this kernel panic tomorrow. This PC is rather heavy loaded router= with BGP full view (> 300K routes). > We're using FIB_TRIE. Last time we got similar panic about 1 month ag= o. Please, let me know if you > need additional information to debug (e.g. objdump). Thanks! >=20 > Mar 9 10:08:55 bras-1 kernel: BUG: unable to handle kernel NULL poin= ter dereference at (null) > Mar 9 10:08:55 bras-1 kernel: IP: [] fib_rules_lookup+0xa2= /0xd0 > Mar 9 10:08:55 bras-1 kernel: *pde =3D 00000000 > Mar 9 10:08:55 bras-1 kernel: Thread overran stack, or stack corrupt= ed Hmm... > Mar 9 10:08:55 bras-1 kernel: Oops: 0000 [#1] SMP > Mar 9 10:08:55 bras-1 kernel: Modules linked in: ipt_NETFLOW iTCO_wd= t xt_tcpudp iptable_filter iptable_nat ip_tables ipt_ISG x_tables ipmi_= watchdog ipmi_msghandler nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_= ipv4 nf_conntrack_ftp nf_conntrack 8021q e1000 e1000e > Mar 9 10:08:55 bras-1 kernel: > Mar 9 10:08:55 bras-1 kernel: Pid: 0, comm: swapper Not tainted (2.6= =2E32 #3) Is it an unpatched kernel ? Could you send us your .config ? gcc -v ?