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

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Date:	Tue, 14 Apr 2015 23:44:22 +0800
From:	Honggang LI <honli@...hat.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	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,
	nicolas.dichtel@...nd.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 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.

thanks

> Please add a proper Fixes: tag
> 
> 
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