netdev - Re: linux-next: kernel panic in ipv6

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Message-ID: <567C9A22.7090300@oracle.com>
Date:	Fri, 25 Dec 2015 09:21:38 +0800
From:	Junxiao Bi <junxiao.bi@...cle.com>
To:	Florian Westphal <fw@...len.de>
Cc:	netdev@...r.kernel.org, davem@...emloft.net,
	linux-next@...r.kernel.org,
	Linux Kernel mailing list <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: kernel panic in ipv6_defrag

On 12/23/2015 04:59 PM, Florian Westphal wrote:
> Junxiao Bi <junxiao.bi@...cle.com> wrote:
>> The following panic happened when I run ocfs2-test on linux-next. Kernel
>> config is attached.
>>
>> [64910.905501] BUG: unable to handle kernel NULL pointer dereference at
>>           (null)
>> [64910.906466] IP: [<ffffffff8183cc8d>] nf_ct_frag6_gather+0x7ad/0x9c0
> [..]
>> ocfs2_stack_o2cb(O) ocfs2_dlm(O) ocfs2_nodemanager(O) ocfs2_stackglue(O)
>> iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi xen_kbdfront
>> xen_netfront xen_fbfront xen_blkfront [last unloaded: ocfs2_stackglue]
>> [64910.906466] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G           O
>> 4.4.0-rc5-next-20151217 #1
> 
> Seems like this snapshot still lacks
> 
> e97ac12859dbf4d3ee0eddb9798867541d1d1e1e
> ("netfilter: ipv6: nf_defrag: fix NULL deref panic"),
> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/net/ipv6/netfilter/nf_conntrack_reasm.c?id=e97ac12859dbf4d3ee0eddb9798867541d1d1e1e
> 
> Its included starting with next-20151221.
> 
> Please report back if it occurs with above commit present.
Looks issue resolved with this fix. Thank you.
> 
> Thanks.
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