linux-kernel - Re: kernel panic in skb_copy

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Message-ID: <1372489497.3301.293.camel@edumazet-glaptop>
Date:	Sat, 29 Jun 2013 00:04:57 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Joe Jin <joe.jin@...cle.com>
Cc:	Frank Blaschka <frank.blaschka@...ibm.com>,
	"David S. Miller" <davem@...emloft.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"zheng.x.li@...cle.com" <zheng.x.li@...cle.com>,
	Xen Devel <xen-devel@...ts.xen.org>,
	Ian Campbell <Ian.Campbell@...rix.com>,
	Jan Beulich <JBeulich@...e.com>,
	Stefano Stabellini <stefano.stabellini@...citrix.com>
Subject: Re: kernel panic in skb_copy_bits

On Sat, 2013-06-29 at 07:36 +0800, Joe Jin wrote:
> Hi Eric,
> 
> The patch not fix the issue and panic as same as early I posted:


At least it fixes my own panics ;)

My test bed was :

Launch 24 concurrent "netperf -t UDP_STREAM -H destination -- -m 128"

Then on "destination" disconnect the ethernet port.

While the link flaps, I got panic in a few seconds.

Thanks



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