From mboxrd@z Thu Jan 1 00:00:00 1970 From: Larry Finger Subject: Re: [crash] BUG: unable to handle kernel NULL pointer dereference at 0000000000000370 Date: Mon, 21 Jul 2008 15:28:29 -0500 Message-ID: <4884F16D.7010709@lwfinger.net> 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> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Ingo Molnar , Ian Schram , David Miller , akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org, netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, wireless , j@w1.fi To: Linus Torvalds Return-path: In-Reply-To: Sender: linux-wireless-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org Linus Torvalds wrote: > > 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. Thanks for the explanation. With your latest tree, I do get the warning. Unfortunately, it still breaks my wireless and I still need to do the bisection. That is complicated by getting a kernel that won't build after the first try. I think I now have a workaround. Larry -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html