From: Eric Dumazet <eric.dumazet@gmail.com>
To: Chris Boot <bootc@bootc.net>
Cc: lkml <linux-kernel@vger.kernel.org>, netdev <netdev@vger.kernel.org>
Subject: Re: BUG: unable to handle kernel NULL pointer dereference in ipv6_select_ident
Date: Wed, 21 Dec 2011 21:28:52 +0100 [thread overview]
Message-ID: <1324499332.2621.7.camel@edumazet-laptop> (raw)
In-Reply-To: <4EF23BF2.4000601@bootc.net>
Le mercredi 21 décembre 2011 à 20:05 +0000, Chris Boot a écrit :
> On 21/12/2011 18:00, Eric Dumazet wrote:
> > Le mercredi 21 décembre 2011 à 18:36 +0100, Eric Dumazet a écrit :
> >
> >> Good point, thats a different problem then, since 3.1 is not supposed to
> >> have this bug.
> >>
> >> It seems rt->rt6i_peer points to invalid memory in your crash.
> >>
> >> (RBX=00000000000001f4)
> >>
> >> 8b 83 a4 00 00 00 mov 0xa4(%rbx),%eax p->refcnt
> >> 1f4+a4 -> CR2=0000000000000298
> >>
> > It would help if you can confirm latest linux tree can reproduce the
> > bug.
>
> Hi Eric,
>
> I just built a v3.2-rc6-140-gb9e26df with the same config as the Debian
> 3.1.0 kernel. I can reproduce the bug just as easily with this kernel as
> with the Debian kernel. Unfortunately I wasn't able to get an entire
> trace, for some reason it didn't appear to be printed to the serial port
> and hung after the (long) list of loaded kernel modules. The crash
> happens at the same offset:
>
Thanks !
Oh well, br_netfilter fake_rtable strikes again.
I'll cook a patch in a couple of minutes...
next prev parent reply other threads:[~2011-12-21 20:29 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-21 15:52 Chris Boot
2011-12-21 16:29 ` Eric Dumazet
2011-12-21 17:03 ` Chris Boot
2011-12-21 17:36 ` Eric Dumazet
2011-12-21 18:00 ` Eric Dumazet
2011-12-21 20:05 ` Chris Boot
2011-12-21 20:28 ` Eric Dumazet [this message]
2011-12-21 20:52 ` Eric Dumazet
2011-12-21 21:58 ` Chris Boot
2011-12-21 23:12 ` Chris Boot
2011-12-22 4:37 ` Eric Dumazet
2011-12-22 6:00 ` [PATCH] bridge: provide a mtu() method for fake_dst_ops Eric Dumazet
2011-12-22 7:05 ` Steffen Klassert
2011-12-22 6:38 ` BUG: unable to handle kernel NULL pointer dereference in ipv6_select_ident Steffen Klassert
2011-12-22 7:51 ` Eric Dumazet
2011-12-22 7:58 ` Steffen Klassert
2011-12-22 8:05 ` Eric Dumazet
2011-12-22 10:01 ` Steffen Klassert
2011-12-22 10:04 ` Chris Boot
2011-12-22 14:15 ` Eric Dumazet
2011-12-22 15:54 ` Chris Boot
2011-12-22 17:41 ` Eric Dumazet
2011-12-22 18:29 ` David Miller
2011-12-23 3:38 ` David Miller
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