linux-kernel - Re: [PATCH linux-next 1/4] infiniband/ipoib: fix possible NULL pointer dereference in ipoib_get

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Message-ID: <20150414155307.GD21856@honli.nay.redhat.com>
Date:	Tue, 14 Apr 2015 23:53:07 +0800
From:	Honggang LI <honli@...hat.com>
To:	Nicolas Dichtel <nicolas.dichtel@...nd.com>
Cc:	Eric Dumazet <eric.dumazet@...il.com>, roland@...nel.org,
	sean.hefty@...el.com, hal.rosenstock@...il.com, kaber@...sh.net,
	davem@...emloft.net, alex.estrin@...el.com, dledford@...hat.com,
	edumazet@...gle.com, erezsh@...lanox.com, maheshb@...gle.com,
	jbenc@...hat.com, ebiederm@...ssion.com,
	elfring@...rs.sourceforge.net, f.fainelli@...il.com,
	linux@...ck-us.net, andrew@...n.ch, sfeldma@...il.com,
	alexander.h.duyck@...el.com, linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH linux-next 1/4] infiniband/ipoib: fix possible NULL
 pointer dereference in ipoib_get_iflink

On Tue, Apr 14, 2015 at 05:49:55PM +0200, Nicolas Dichtel wrote:
> Le 14/04/2015 17:44, Honggang LI a écrit :
> >On Tue, Apr 14, 2015 at 08:34:33AM -0700, Eric Dumazet wrote:
> >>On Tue, 2015-04-14 at 23:20 +0800, Honggang Li wrote:
> >>>Starting monitoring for VG vg_rdma01:   3 logical volume(s) in volume
> >>>group "vg_rdma01" monitored
> >>>[  OK  ]
> >>
> >>
> >>>CR2: 0000000000000120
> >>>---[ end trace a8610f6e9640eb85 ]---
> >>>
> >>>Signed-off-by: Honggang Li <honli@...hat.com>
> >>
> >>When was this bug added ?
> >>
> >
> >Sorry, I do not know. I ran into this bug today when I'm tracing a race
> >condition issue related qib. In order to check upstream linux-next fix
> >the race condition or not, I build linux-next-20150414 on two machines. Both
> >machines panic at modprobe ib_ipoib. Do you means I need to report a
> >bug? But I do not know report to who or where.
> 
> Here is the tag:
> Fixes: 5aa7add8f14b ("infiniband/ipoib: implement ndo_get_iflink")
>

thank you. 
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