Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757134AbYGXL5q (ORCPT ); Thu, 24 Jul 2008 07:57:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756823AbYGXL5b (ORCPT ); Thu, 24 Jul 2008 07:57:31 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:36852 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756719AbYGXL53 (ORCPT ); Thu, 24 Jul 2008 07:57:29 -0400 Date: Thu, 24 Jul 2008 13:56:25 +0200 From: Ingo Molnar To: David Miller Cc: herbert@gondor.apana.org.au, w@1wt.eu, davidn@davidnewall.com, torvalds@linux-foundation.org, akpm@linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, stefanr@s5r6.in-berlin.de, rjw@sisk.pl, ilpo.jarvinen@helsinki.fi, Dave Jones Subject: [regression] nf_iterate(), BUG: unable to handle kernel NULL pointer dereference Message-ID: <20080724115625.GA23994@elte.hu> References: <20080724060448.GA10203@elte.hu> <20080724.022259.113079007.davem@davemloft.net> <20080724093411.GA12001@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080724093411.GA12001@elte.hu> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2705 Lines: 61 here's a new type of crash a -tip testbox triggered today: BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 IP: [<0000000000000000>] 0x0 PGD 0 Oops: 0010 [1] PREEMPT CPU 0 Pid: 5331, comm: ssh Not tainted 2.6.26 #21613 RIP: 0010:[<0000000000000000>] [<0000000000000000>] 0x0 RSP: 0018:ffff88003b959a70 EFLAGS: 00010217 RAX: ffff88003b9ba91c RBX: ffff88003b9baac0 RCX: 0000000000000002 RDX: ffff88003b9baac0 RSI: 0000000000000014 RDI: ffff88003b9ba3d8 RBP: ffff88003b959a98 R08: ffff88003e434130 R09: ffff88003b9598b8 R10: 0000000000002000 R11: 00000000d85507ac R12: ffff88003b9ba3d8 R13: 0000000000000002 R14: ffff88003e06a020 R15: 0000000000000000 FS: 00007fb2b7806780(0000) GS:ffffffff80c1c180(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000000 CR3: 000000003b9e8000 CR4: 00000000000006a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process ssh (pid: 5331, threadinfo ffff88003b958000, task ffff88003b99a000) Stack: ffffffff80777f25 ffff88003b959a98 ffffffff80c24170 ffff88003b959b28 0000000000000004 ffff88003b959ae8 ffffffff80733107 ffff88003b959ab8 ffff88003b9ba3d8 ffffffff80c1ed60 0000000000000004 ffff88003b9ba3d8 Call Trace: [] ? ipv4_confirm+0x8d/0x122 [] nf_iterate+0x43/0xa5 [] ? ip_finish_output+0x0/0x62 [] nf_hook_slow+0x64/0xcb [] ? ip_finish_output+0x0/0x62 [] nf_hook_thresh+0x1e/0x20 [] ip_output+0xb3/0xc9 [] dst_output+0xb/0xd [] ip_local_out+0x1e/0x22 [] ip_queue_xmit+0x2a6/0x321 [] ? sub_preempt_count+0x2d/0x40 [] ? slob_alloc+0x11b/0x248 [] tcp_transmit_skb+0x5ec/0x61b [] ? kmalloc+0xc/0xe [] tcp_connect+0x2a4/0x344 [] tcp_v4_connect+0x3cd/0x425 [] inet_stream_connect+0x9a/0x24d [] ? fget_light+0x38/0x85 [] sys_connect+0x68/0x8b [] ? up_read+0x9/0xb [] ? do_page_fault+0x55f/0x92f [] system_call_fastpath+0x16/0x1b with this config: http://redhat.com/~mingo/misc/config-Thu_Jul_24_13_23_34_CEST_2008.bad i'll try a bisection. Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/