Date: Mon, 21 Jul 2008 12:47:58 -0700 (PDT)
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Larry Finger <Larry.Finger@lwfinger.net>
cc: Ingo Molnar <mingo@elte.hu>, Ian Schram <ischram@telenet.be>,
       David Miller <davem@davemloft.net>, akpm@linux-foundation.org,
       netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
       wireless <linux-wireless@vger.kernel.org>, j@w1.fi
Subject: Re: [crash] BUG: unable to handle kernel NULL pointer dereference
 at 0000000000000370
In-Reply-To: <4884E6E6.7010800@lwfinger.net>
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References: <20080721134506.GA27598@elte.hu> <20080721143023.GA32451@elte.hu> <20080721150446.GA17746@elte.hu> <20080721.082419.70392960.davem@davemloft.net> <4884D2F1.2030704@telenet.be> <20080721190646.GA19044@elte.hu> <4884DFEE.4060003@lwfinger.net>
 <20080721193425.GA29287@elte.hu> <4884E6E6.7010800@lwfinger.net>
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On Mon, 21 Jul 2008, Larry Finger wrote:
> 
> Yes, I'm chasing a distinct bug. The header for mine is
> 
> Jul 21 12:19:37 larrylap kernel: kernel BUG at net/core/dev.c:1328!

Ok, that one is fixed now in my tree. Or at least it's turned into a 
warning, so the machine should work.

> With an invalid opcode, mine is likely due to stack corruption.

No, invalid opcode is because we use the "ud2" instruction for BUG(), 
which causes an invalid op exception. So any BUG[_ON]() will always cause 
that on x86.

		Linus
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