From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: [Bugme-new] [Bug 16120] New: Oops: 0000 [#1] SMP, unable to handle kernel NULL pointer dereference at (null) Date: Sat, 05 Jun 2010 11:17:06 +0200 Message-ID: <1275729426.5238.6.camel@edumazet-laptop> References: <20100604161737.25c7940a.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: netdev@vger.kernel.org, bugzilla-daemon@bugzilla.kernel.org, bugme-daemon@bugzilla.kernel.org, alex.vizor@gmail.com, Patrick McHardy To: Andrew Morton , David Miller Return-path: Received: from mail-ww0-f46.google.com ([74.125.82.46]:65468 "EHLO mail-ww0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932626Ab0FEJRY (ORCPT ); Sat, 5 Jun 2010 05:17:24 -0400 Received: by wwc33 with SMTP id 33so84139wwc.19 for ; Sat, 05 Jun 2010 02:17:22 -0700 (PDT) In-Reply-To: <20100604161737.25c7940a.akpm@linux-foundation.org> Sender: netdev-owner@vger.kernel.org List-ID: Le vendredi 04 juin 2010 =C3=A0 16:17 -0700, Andrew Morton a =C3=A9crit= : > (switched to email. Please respond via emailed reply-to-all, not via= the > bugzilla web interface). >=20 > On Fri, 4 Jun 2010 09:25:58 GMT > bugzilla-daemon@bugzilla.kernel.org wrote: >=20 > > https://bugzilla.kernel.org/show_bug.cgi?id=3D16120 > >=20 > > Summary: Oops: 0000 [#1] SMP, unable to handle kernel NU= LL > > pointer dereference at (null) > > Product: Platform Specific/Hardware > > Version: 2.5 > > Kernel Version: 2.6.35-rc1 > > Platform: All > > OS/Version: Linux > > Tree: Mainline > > Status: NEW > > Severity: high > > Priority: P1 > > Component: x86-64 > > AssignedTo: platform_x86_64@kernel-bugs.osdl.org > > ReportedBy: alex.vizor@gmail.com > > Regression: Yes > >=20 > >=20 > > Created an attachment (id=3D26647) > > --> (https://bugzilla.kernel.org/attachment.cgi?id=3D26647) id) > > 2.6.35-rc1 kernel log > >=20 > > It happens randomly, almost a week I used 2.6.35-rc1 and don't have= any > > problems. But since last day it happened twice. > >=20 > > I attached kernel log, please inform me if I can help in investigat= ion. > >=20 >=20 > ip6mr_sk_done() oopsed. Only thing I found a first glance is a typo but this should not be the root of the problem. [PATCH] ip6mr: fix a typo in ip6mr_for_each_table() Signed-off-by: Eric Dumazet --- diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index 073071f..89c0b07 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -120,7 +120,7 @@ static void mroute_clean_tables(struct mr6_table *m= rt); static void ipmr_expire_process(unsigned long arg); =20 #ifdef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES -#define ip6mr_for_each_table(mrt, met) \ +#define ip6mr_for_each_table(mrt, net) \ list_for_each_entry_rcu(mrt, &net->ipv6.mr6_tables, list) =20 static struct mr6_table *ip6mr_get_table(struct net *net, u32 id)