netdev - Re: [Bugme-new] [Bug 16120] New: Oops: 0000 [#1] SMP, unable to handle kernel NULL pointer dereference at (null)

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Date:	Sat, 05 Jun 2010 11:17:06 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, bugzilla-daemon@...zilla.kernel.org,
	bugme-daemon@...zilla.kernel.org, alex.vizor@...il.com,
	Patrick McHardy <kaber@...sh.net>
Subject: Re: [Bugme-new] [Bug 16120] New: Oops: 0000 [#1] SMP, unable to
 handle kernel NULL pointer dereference at (null)

Le vendredi 04 juin 2010 à 16:17 -0700, Andrew Morton a écrit :
> (switched to email.  Please respond via emailed reply-to-all, not via the
> bugzilla web interface).
> 
> On Fri, 4 Jun 2010 09:25:58 GMT
> bugzilla-daemon@...zilla.kernel.org wrote:
> 
> > https://bugzilla.kernel.org/show_bug.cgi?id=16120
> > 
> >            Summary: Oops: 0000 [#1] SMP, unable to handle kernel NULL
> >                     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@...nel-bugs.osdl.org
> >         ReportedBy: alex.vizor@...il.com
> >         Regression: Yes
> > 
> > 
> > Created an attachment (id=26647)
> >  --> (https://bugzilla.kernel.org/attachment.cgi?id=26647) id)

> > 2.6.35-rc1 kernel log
> > 
> > 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.
> > 
> > I attached kernel log, please inform me if I can help in investigation.
> > 
> 
> 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 <eric.dumazet@...il.com>
---

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 *mrt);
 static void ipmr_expire_process(unsigned long arg);
 
 #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)
 
 static struct mr6_table *ip6mr_get_table(struct net *net, u32 id)


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