From mboxrd@z Thu Jan 1 00:00:00 1970 From: Reuben Farrelly Subject: Re: 2.6.18-rc2-mm1 Date: Fri, 28 Jul 2006 20:09:35 +1200 Message-ID: <44C9C63F.7010801@reub.net> References: <20060727015639.9c89db57.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, Linux Netdev List , herbert@gondor.apana.org.au Return-path: Received: from tornado.reub.net ([202.89.145.182]:52926 "EHLO tornado.reub.net") by vger.kernel.org with ESMTP id S1161091AbWG1IJi (ORCPT ); Fri, 28 Jul 2006 04:09:38 -0400 To: Andrew Morton In-Reply-To: <20060727015639.9c89db57.akpm@osdl.org> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On 27/07/2006 8:56 p.m., Andrew Morton wrote: > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc2/2.6.18-rc2-mm1/ > > - git-klibc has been dropped due to very bad parallel-make problems. > > - Added a new line to the boilerplate, below! > > - Added Sam's lxdialog tree, as git-lxdialog.patch. You no longer need > x-ray spectacles to read the menuconfig screens. > > - Lots of random patches. Many of them are bugfixes and I shall, as usual, > go through them all identifying 2.6.18 material. But I can miss things, so > please don't be afraid to point 2.6.18 candidates out to me. > > I also have, as usual, a number of bugfixes agains the git trees. I'll > send these to the maintainers until they stick and then I lose track of > them. So don't be afraid to send reminders to the subsystem maintainers > either. Still seeing breakage with the e1000/NAT. Now the problem isn't so much that the bug exists, but that unlike in -rc1-mm2, the trace scrolls over and over and over (with some variation down into it) until the kernel completely panics and the box has to be rebooted. http://www.ussg.iu.edu/hypermail/linux/kernel/0607.1/2689.html from Herbert Xu talks about the original problem. It's a regression from the previous -mm whereby the trace would print out just once. Starting Dovecot Imap: [ OK ] Starting clamd: [ OK ] Starting amavisd: BUG: warning at net/core/dev.c:1168/skb_checksum_help() Call Trace: [] show_trace+0xb5/0x324 [] dump_stack+0x15/0x1c [] skb_checksum_help+0x63/0x13b [] :iptable_nat:ip_nat_fn+0x5f/0x1d2 [] :iptable_nat:ip_nat_local_fn+0x33/0xbc [] nf_iterate+0x5a/0x9b [] nf_hook_slow+0x60/0xcd [] ip_queue_xmit+0x444/0x4c0 [] tcp_transmit_skb+0x68f/0x6cf [] __tcp_push_pending_frames+0x867/0x95a [] tcp_rcv_established+0x72c/0x7c4 [] tcp_v4_do_rcv+0x2e/0x317 [] tcp_v4_rcv+0x9fc/0xa79 [] ip_local_deliver+0x199/0x270 [] ip_rcv+0x4d3/0x52b [] netif_receive_skb+0x1eb/0x27b [] e1000_clean_rx_irq_ps+0x5c1/0x6a0 [] e1000_clean+0x325/0x45b [] net_rx_action+0x8e/0x147 [] __do_softirq+0x78/0x105 [] call_softirq+0x1e/0x28 DWARF2 unwinder stuck at call_softirq+0x1e/0x28 Leftover inexact backtrace: [] do_softirq+0x39/0xa4 [] irq_exit+0x58/0x5a [] do_IRQ+0xb4/0xbe [] ret_from_intr+0x0/0xf <1>Unable to handle kernel paging request at ffffffff82800000 RIP: [] show_trace+0x2bf/0x324 PGD 203027 PUD 205027 PMD 0 Oops: 0000 [1] SMP last sysfs file: /class/net/sit0/address CPU 0 Modules linked in: hidp rfcomm l2cap bluetooth ipv6 ip_gre iptable_filter iptable_nat ip_nat ip_conntrack nfnetlink iptable_mangle ip_tables binfmt_misc iTCO_wdt i2c_i801 serio_raw Pid: 2127, comm: imap Not tainted 2.6.18-rc2-mm1 #1 RIP: 0010:[] [] show_trace+0x2bf/0x324 RSP: 0000:ffffffff806366f0 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000004 RDX: 0000000000000010 RSI: ffff81003d95c840 RDI: ffff81003d95c140 RBP: ffffffff806367f0 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000002 R11: 0000000000000001 R12: ffffffff827ffff9 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff80907000 FS: 00002ab5ab544860(0000) GS:ffffffff808b2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: ffffffff82800000 CR3: 0000000029dea000 CR4: 00000000000006e0 Process imap (pid: 2127, threadinfo ffff810029e62000, task ffff81003d95c140) Stack: ffffffff806cec48 ffffffff80636fc0 0000000000000001 ffff81002c9d78f8 0000000000000000 0000000000000000 00007fffff571020 ffff810029e63f58 ffffffff80636f80 0000000000000046 0000000000000000 0000000000000000 Call Trace: [] dump_stack+0x15/0x1c [] skb_checksum_help+0x63/0x13b [] :iptable_nat:ip_nat_fn+0x5f/0x1d2 [] :iptable_nat:ip_nat_local_fn+0x33/0xbc [] nf_iterate+0x5a/0x9b [] nf_hook_slow+0x60/0xcd [] ip_queue_xmit+0x444/0x4c0 [] tcp_transmit_skb+0x68f/0x6cf [] __tcp_push_pending_frames+0x867/0x95a [] tcp_rcv_established+0x72c/0x7c4 [] tcp_v4_do_rcv+0x2e/0x317 [] tcp_v4_rcv+0x9fc/0xa79 [] ip_local_deliver+0x199/0x270 [] ip_rcv+0x4d3/0x52b [] netif_receive_skb+0x1eb/0x27b [] e1000_clean_rx_irq_ps+0x5c1/0x6a0 [] e1000_clean+0x325/0x45b [] net_rx_action+0x8e/0x147 [] __do_softirq+0x78/0x105 [] call_softirq+0x1e/0x28 DWARF2 unwinder stuck at call_softirq+0x1e/0x28 Leftover inexact backtrace: [] do_softirq+0x39/0xa4 [] irq_exit+0x58/0x5a [] do_IRQ+0xb4/0xbe [] ret_from_intr+0x0/0xf <1>Unable to handle kernel paging request at ffffffff82800000 RIP: [] show_trace+0x2bf/0x324 PGD 203027 PUD 205027 PMD 0 Oops: 0000 [2] SMP last sysfs file: /class/net/sit0/address CPU 0 Modules linked in: hidp rfcomm l2cap bluetooth ipv6 ip_gre iptable_filter iptable_nat ip_nat ip_conntrack nfnetlink iptable_mangle ip_tables binfmt_misc iTCO_wdt i2c_i801 serio_raw Pid: 2127, comm: imap Not tainted 2.6.18-rc2-mm1 #1 RIP: 0010:[] [] show_trace+0x2bf/0x324 RSP: 0000:ffffffff80636378 EFLAGS: 00010006 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff880a3808 RDX: ffff81003d95c140 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff80636478 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff8029fae0 R11: 0000000000000000 R12: ffffffff827ffff9 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff80907000 FS: 00002ab5ab544860(0000) GS:ffffffff808b2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: ffffffff82800000 CR3: 0000000029dea000 CR4: 00000000000006e0 Process imap (pid: 2127, threadinfo ffff810029e62000, task ffff81003d95c140) Stack: 000000000000000b ffffffff80636fc0 0000000080632fc0 0000000000000000 0000000000000000 0000000000000000 00007fffff571020 ffff810029e63f58 ffffffff80636f80 0000000000000046 0000000000000001 0000000000000002 Call Trace: [] _show_stack+0xef/0xfe [] show_registers+0x8c/0x101 [] __die+0xa0/0xe3 [] do_page_fault+0x785/0x89d [] error_exit+0x0/0x96 DWARF2 unwinder stuck at error_exit+0x0/0x96 Leftover inexact backtrace: [] show_trace+0x2bf/0x324 [] call_softirq+0x1e/0x28 [] dump_stack+0x15/0x1c [] skb_checksum_help+0x63/0x13b [] :iptable_nat:ip_nat_fn+0x5f/0x1d2 [] :iptable_nat:ip_nat_local_fn+0x33/0xbc [] nf_iterate+0x5a/0x9b [] dst_output+0x0/0x10 [] nf_hook_slow+0x60/0xcd [] dst_output+0x0/0x10 [] _spin_unlock_irqrestore+0x3f/0x47 [] ip_queue_xmit+0x444/0x4c0 [] tso_fragment+0x5d/0x20e [] __kmalloc_track_caller+0x109/0x11b [] tcp_transmit_skb+0x68f/0x6cf [] tso_fragment+0x1a6/0x20e [] __tcp_push_pending_frames+0x867/0x95a [] __kfree_skb+0xfc/0x101 [] tcp_data_queue+0x651/0xc39 [] tcp_rcv_established+0x72c/0x7c4 [] tcp_v4_do_rcv+0x2e/0x317 [] tcp_v4_rcv+0x9fc/0xa79 [] nf_hook_slow+0x60/0xcd [] ip_local_deliver_finish+0x0/0x1fb [] ip_local_deliver+0x199/0x270 [] ip_rcv+0x4d3/0x52b [] kfree_skb+0x2c/0x31 [] netif_receive_skb+0x1eb/0x27b [] e1000_clean_rx_irq_ps+0x5c1/0x6a0 [] e1000_clean+0x325/0x45b [] net_rx_action+0x8e/0x147 [] __do_softirq+0x64/0x105 [] __do_softirq+0x78/0x105 [] call_softirq+0x1e/0x28 [] do_softirq+0x39/0xa4 [] irq_exit+0x58/0x5a [] do_IRQ+0xb4/0xbe [] ret_from_intr+0x0/0xf <1>Unable to handle kernel paging request at ffffffff82800000 RIP: [] show_trace+0x2bf/0x324 PGD 203027 PUD 205027 PMD 0 Oops: 0000 [3] SMP last sysfs file: /class/net/sit0/address CPU 0 Modules linked in: hidp rfcomm l2cap bluetooth ipv6 ip_gre iptable_filter iptable_nat ip_nat ip_conntrack nfnetlink iptable_mangle ip_tables binfmt_misc iTCO_wdt i2c_i801 serio_raw Pid: 2127, comm: imap Not tainted 2.6.18-rc2-mm1 #1 RIP: 0010:[] [] show_trace+0x2bf/0x324 RSP: 0000:ffffffff80635ff8 EFLAGS: 00010006 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff880a3808 RDX: ffff81003d95c140 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff806360f8 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff8029fae0 R11: 0000000000000000 R12: ffffffff827ffff9 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff80907000 FS: 00002ab5ab544860(0000) GS:ffffffff808b2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: ffffffff82800000 CR3: 0000000029dea000 CR4: 00000000000006e0 Process imap (pid: 2127, threadinfo ffff810029e62000, task ffff81003d95c140) Stack: 000000000000000b ffffffff80636fc0 0000000080632fc0 0000000000000000 ffffffff80907000 0000000000000000 0000000000000000 ffffffff827ffff9 000000008025fa27 0000000000000001 0000000000000000 ffffffff8029fae0 Call Trace: [] _show_stack+0xef/0xfe [] show_registers+0x8c/0x101 [] __die+0xa0/0xe3 [] do_page_fault+0x785/0x89d [] error_exit+0x0/0x96 DWARF2 unwinder stuck at error_exit+0x0/0x96 Leftover inexact backtrace: [] module_text_address+0x16/0x46 [] show_trace+0x2bf/0x324 [] show_trace+0x2cb/0x324 [] call_softirq+0x1e/0x28 [] _show_stack+0xef/0xfe [] show_registers+0x8c/0x101 [] __die+0xa0/0xe3 [] do_page_fault+0x785/0x89d [] mark_held_locks+0x5d/0x96 [] trace_hardirqs_on+0xec/0x12c [] error_exit+0x0/0x96 [] show_trace+0x2bf/0x324 [] call_softirq+0x1e/0x28 [] dump_stack+0x15/0x1c [] skb_checksum_help+0x63/0x13b [] :iptable_nat:ip_nat_fn+0x5f/0x1d2 [] :iptable_nat:ip_nat_local_fn+0x33/0xbc [] nf_iterate+0x5a/0x9b [] dst_output+0x0/0x10 [] nf_hook_slow+0x60/0xcd [] dst_output+0x0/0x10 [] _spin_unlock_irqrestore+0x3f/0x47 [] ip_queue_xmit+0x444/0x4c0 [] tso_fragment+0x5d/0x20e [] __kmalloc_track_caller+0x109/0x11b [] tcp_transmit_skb+0x68f/0x6cf [] tso_fragment+0x1a6/0x20e [] __tcp_push_pending_frames+0x867/0x95a [] __kfree_skb+0xfc/0x101 [] tcp_data_queue+0x651/0xc39 [] tcp_rcv_established+0x72c/0x7c4 [] tcp_v4_do_rcv+0x2e/0x317 [] tcp_v4_rcv+0x9fc/0xa79 [] nf_hook_slow+0x60/0xcd [] ip_local_deliver_finish+0x0/0x1fb [] ip_local_deliver+0x199/0x270 [] ip_rcv+0x4d3/0x52b [] kfree_skb+0x2c/0x31 [] netif_receive_skb+0x1eb/0x27b [] e1000_clean_rx_irq_ps+0x5c1/0x6a0 [] e1000_clean+0x325/0x45b [] net_rx_action+0x8e/0x147 [] __do_softirq+0x64/0x105 [] __do_softirq+0x78/0x105 [] call_softirq+0x1e/0x28 [] do_softirq+0x39/0xa4 [] irq_exit+0x58/0x5a [] do_IRQ+0xb4/0xbe [] ret_from_intr+0x0/0xf <1>Unable to handle kernel paging request at ffffffff82800000 RIP: [] show_trace+0x2bf/0x324 PGD 203027 PUD 205027 PMD 0 Oops: 0000 [4] SMP last sysfs file: /class/net/sit0/address CPU 0 Modules linked in: hidp rfcomm l2cap bluetooth ipv6 ip_gre iptable_filter iptable_nat ip_nat ip_conntrack nfnetlink iptable_mangle ip_tables binfmt_misc iTCO_wdt i2c_i801 serio_raw Pid: 2127, comm: imap Not tainted 2.6.18-rc2-mm1 #1 RIP: 0010:[] [] show_trace+0x2bf/0x324 RSP: 0000:ffffffff80635c78 EFLAGS: 00010006 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff880a3808 RDX: ffff81003d95c140 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff80635d78 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff8029fae0 R11: 0000000000000000 R12: ffffffff827ffff9 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff80907000 FS: 00002ab5ab544860(0000) GS:ffffffff808b2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: ffffffff82800000 CR3: 0000000029dea000 CR4: 00000000000006e0 Process imap (pid: 2127, threadinfo ffff810029e62000, task ffff81003d95c140) Stack: 000000000000000b ffffffff80636fc0 0000000080632fc0 0000000000000000 ffffffff80907000 0000000000000000 0000000000000000 ffffffff827ffff9 000000008025fa27 0000000000000001 0000000000000000 ffffffff8029fae0 Call Trace: [] _show_stack+0xef/0xfe [] show_registers+0x8c/0x101 [] __die+0xa0/0xe3 [] do_page_fault+0x785/0x89d [] error_exit+0x0/0x96 DWARF2 unwinder stuck at error_exit+0x0/0x96 Leftover inexact backtrace: [] module_text_address+0x16/0x46 [] show_trace+0x2bf/0x324 [] show_trace+0x2cb/0x324 [] module_text_address+0x16/0x46 [] error_exit+0x0/0x96 [] _show_stack+0xef/0xfe [] show_registers+0x8c/0x101 [] __die+0xa0/0xe3 [] do_page_fault+0x785/0x89d [] vprintk+0x30f/0x35d [] kallsyms_lookup+0xea/0x1b5 [] call_softirq+0x1e/0x28 [] ret_from_intr+0x0/0xf [] ret_from_intr+0x0/0xf [] error_exit+0x0/0x96 [] module_text_address+0x16/0x46 [] show_trace+0x2bf/0x324 [] show_trace+0x2cb/0x324 [] call_softirq+0x1e/0x28 [] _show_stack+0xef/0xfe [] show_registers+0x8c/0x101 [] __die+0xa0/0xe3 [] do_page_fault+0x785/0x89d [] mark_held_locks+0x5d/0x96 [] trace_hardirqs_on+0xec/0x12c [] error_exit+0x0/0x96 [] show_trace+0x2bf/0x324 [] call_softirq+0x1e/0x28 [] dump_stack+0x15/0x1c [] skb_checksum_help+0x63/0x13b [] :iptable_nat:ip_nat_fn+0x5f/0x1d2 [] :iptable_nat:ip_nat_local_fn+0x33/0xbc [] nf_iterate+0x5a/0x9b [] dst_output+0x0/0x10 [] nf_hook_slow+0x60/0xcd [] dst_output+0x0/0x10 [] _spin_unlock_irqrestore+0x3f/0x47 [] ip_queue_xmit+0x444/0x4c0 [] tso_fragment+0x5d/0x20e [] __kmalloc_track_caller+0x109/0x11b [] tcp_transmit_skb+0x68f/0x6cf [] tso_fragment+0x1a6/0x20e [] __tcp_push_pending_frames+0x867/0x95a [] __kfree_skb+0xfc/0x101 [] tcp_data_queue+0x651/0xc39 [] tcp_rcv_established+0x72c/0x7c4 [] tcp_v4_do_rcv+0x2e/0x317 [] tcp_v4_rcv+0x9fc/0xa79 [] nf_hook_slow+0x60/0xcd [] ip_local_deliver_finish+0x0/0x1fb [] ip_local_deliver+0x199/0x270 [] ip_rcv+0x4d3/0x52b [] kfree_skb+0x2c/0x31 [] netif_receive_skb+0x1eb/0x27b [] e1000_clean_rx_irq_ps+0x5c1/0x6a0 [] e1000_clean+0x325/0x45b [] net_rx_action+0x8e/0x147 [] __do_softirq+0x64/0x105 [] __do_softirq+0x78/0x105 [] call_softirq+0x1e/0x28 [] do_softirq+0x39/0xa4 [] irq_exit+0x58/0x5a [] do_IRQ+0xb4/0xbe [] ret_from_intr+0x0/0xf <1>Unable to handle kernel paging request at ffffffff82800000 RIP: [] show_trace+0x2bf/0x324 PGD 203027 PUD 205027 PMD 0 Oops: 0000 [5] SMP last sysfs file: /class/net/sit0/address CPU 0 Modules linked in: hidp rfcomm l2cap bluetooth ipv6 ip_gre iptable_filter iptable_nat ip_nat ip_conntrack nfnetlink iptable_mangle ip_tables binfmt_misc iTCO_wdt i2c_i801 serio_raw Pid: 2127, comm: imap Not tainted 2.6.18-rc2-mm1 #1 RIP: 0010:[] [] show_trace+0x2bf/0x324 RSP: 0000:ffffffff806358f8 EFLAGS: 00010006 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff880a3808 RDX: ffff81003d95c140 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff806359f8 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff8029fae0 R11: 0000000000000000 R12: ffffffff827ffff9 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff80907000 FS: 00002ab5ab544860(0000) GS:ffffffff808b2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: ffffffff82800000 CR3: 0000000029dea000 CR4: 00000000000006e0 Process imap (pid: 2127, threadinfo ffff810029e62000, task ffff81003d95c140) Stack: 000000000000000b ffffffff80636fc0 0000000080632fc0 0000000000000000 ffffffff80907000 0000000000000000 0000000000000000 ffffffff827ffff9 000000008025fa27 0000000000000001 0000000000000000 ffffffff8029fae0 Call Trace: [] _show_stack+0xef/0xfe [] show_registers+0x8c/0x101 [] __die+0xa0/0xe3 [] do_page_fault+0x785/0x89d [] error_exit+0x0/0x96 DWARF2 unwinder stuck at error_exit+0x0/0x96 Leftover inexact backtrace: [] module_text_address+0x16/0x46 [] show_trace+0x2bf/0x324 [] show_trace+0x2cb/0x324 [] module_text_address+0x16/0x46 [] error_exit+0x0/0x96 [] _show_stack+0xef/0xfe [] show_registers+0x8c/0x101 [] __die+0xa0/0xe3 [] do_page_fault+0x785/0x89d [] vprintk+0x30f/0x35d [] :iptable_nat:ip_nat_local_fn+0x33/0xbc [] ret_from_intr+0x0/0xf [] ret_from_intr+0x0/0xf [] error_exit+0x0/0x96 [] module_text_address+0x16/0x46 [] show_trace+0x2bf/0x324 [] show_trace+0x2cb/0x324 [] module_text_address+0x16/0x46 [] error_exit+0x0/0x96 [] _show_stack+0xef/0xfe [] show_registers+0x8c/0x101 [] __die+0xa0/0xe3 [] do_page_fault+0x785/0x89d [] vprintk+0x30f/0x35d [] kallsyms_lookup+0xea/0x1b5 [] call_softirq+0x1e/0x28 [] ret_from_intr+0x0/0xf [] ret_from_intr+0x0/0xf [] error_exit+0x0/0x96 [] module_text_address+0x16/0x46 [] show_trace+0x2bf/0x324 [] show_trace+0x2cb/0x324 [] call_softirq+0x1e/0x28 [] _show_stack+0xef/0xfe [] show_registers+0x8c/0x101 [] __die+0xa0/0xe3 [] do_page_fault+0x785/0x89d [] mark_held_locks+0x5d/0x96 [] trace_hardirqs_on+0xec/0x12c [] error_exit+0x0/0x96 [] show_trace+0x2bf/0x324 [] call_softirq+0x1e/0x28 [] dump_stack+0x15/0x1c [] skb_checksum_help+0x63/0x13b [] :iptable_nat:ip_nat_fn+0x5f/0x1d2 [] :iptable_nat:ip_nat_local_fn+0x33/0xbc [] nf_iterate+0x5a/0x9b [] dst_output+0x0/0x10 [] nf_hook_slow+0x60/0xcd [] dst_output+0x0/0x10 [] _spin_unlock_irqrestore+0x3f/0x47 [] ip_queue_xmit+0x444/0x4c0 [] tso_fragment+0x5d/0x20e [] __kmalloc_track_caller+0x109/0x11b [] tcp_transmit_skb+0x68f/0x6cf [] tso_fragment+0x1a6/0x20e [] __tcp_push_pending_frames+0x867/0x95a [] __kfree_skb+0xfc/0x101 [] tcp_data_queue+0x651/0xc39 [] tcp_rcv_established+0x72c/0x7c4 [] tcp_v4_do_rcv+0x2e/0x317 [] tcp_v4_rcv+0x9fc/0xa79 [] nf_hook_slow+0x60/0xcd [] ip_local_deliver_finish+0x0/0x1fb [] ip_local_deliver+0x199/0x270 [] ip_rcv+0x4d3/0x52b [] kfree_skb+0x2c/0x31 [] netif_receive_skb+0x1eb/0x27b [] e1000_clean_rx_irq_ps+0x5c1/0x6a0 [] e1000_clean+0x325/0x45b [] net_rx_action+0x8e/0x147 [] __do_softirq+0x64/0x105 [] __do_softirq+0x78/0x105 [] call_softirq+0x1e/0x28 [] do_softirq+0x39/0xa4 [] irq_exit+0x58/0x5a [] do_IRQ+0xb4/0xbe [] ret_from_intr+0x0/0xf <1>Unable to handle kernel paging request at ffffffff82800000 RIP: [] show_trace+0x2bf/0x324 PGD 203027 PUD 205027 PMD 0 Oops: 0000 [6] SMP last sysfs file: /class/net/sit0/address CPU 0 Modules linked in: hidp rfcomm l2cap bluetooth ipv6 ip_gre iptable_filter iptable_nat ip_nat ip_conntrack nfnetlink iptable_mangle ip_tables binfmt_misc iTCO_wdt i2c_i801 serio_raw Pid: 2127, comm: imap Not tainted 2.6.18-rc2-mm1 #1 RIP: 0010:[] [] show_trace+0x2bf/0x324 RSP: 0000:ffffffff80635578 EFLAGS: 00010006 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff880a3808 RDX: ffff81003d95c140 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff80635678 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff8029fae0 R11: 0000000000000000 R12: ffffffff827ffff9 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff80907000 FS: 00002ab5ab544860(0000) GS:ffffffff808b2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: ffffffff82800000 CR3: 0000000029dea000 CR4: 00000000000006e0 Process imap (pid: 2127, threadinfo ffff810029e62000, task ffff81003d95c140) Stack: 000000000000000b ffffffff80636fc0 0000000080632fc0 0000000000000000 ffffffff80907000 0000000000000000 0000000000000000 ffffffff827ffff9 000000008025fa27 0000000000000001 0000000000000000 ffffffff8029fae0 Call Trace: [] _show_stack+0xef/0xfe [] show_registers+0x8c/0x101 [] __die+0xa0/0xe3 [] do_page_fault+0x785/0x89d [] error_exit+0x0/0x96 DWARF2 unwinder stuck at error_exit+0x0/0x96 Leftover inexact backtrace: [] module_text_address+0x16/0x46 [] show_trace+0x2bf/0x324 [] show_trace+0x2cb/0x324 [] module_text_address+0x16/0x46 [] error_exit+0x0/0x96 [] _show_stack+0xef/0xfe [] show_registers+0x8c/0x101 [] __die+0xa0/0xe3 [] do_page_fault+0x785/0x89d [] vprintk+0x30f/0x35d [] :iptable_nat:ip_nat_local_fn+0x33/0xbc [] ret_from_intr+0x0/0xf [] ret_from_intr+0x0/0xf [] error_exit+0x0/0x96 [] module_text_address+0x16/0x46 [] show_trace+0x2bf/0x324 [] show_trace+0x2cb/0x324 [] module_text_address+0x16/0x46 [] error_exit+0x0/0x96 [] _show_stack+0xef/0xfe [] show_registers+0x8c/0x101 [] __die+0xa0/0xe3 [] do_page_fault+0x785/0x89d [] vprintk+0x30f/0x35d [] :iptable_nat:ip_nat_local_fn+0x33/0xbc [] ret_from_intr+0x0/0xf [] ret_from_intr+0x0/0xf [] error_exit+0x0/0x96 [] module_text_address+0x16/0x46 [] show_trace+0x2bf/0x324 [] show_trace+0x2cb/0x324 [] module_text_address+0x16/0x46 [] error_exit+0x0/0x96 [] _show_stack+0xef/0xfe [] show_registers+0x8c/0x101 [] __die+0xa0/0xe3 [] do_page_fault+0x785/0x89d [] vprintk+0x30f/0x35d [] kallsyms_lookup+0xea/0x1b5 [] call_softirq+0x1e/0x28 [] ret_from_intr+0x0/0xf [] ret_from_intr+0x0/0xf [] error_exit+0x0/0x96 [] module_text_address+0x16/0x46 [] show_trace+0x2bf/0x324 [] show_trace+0x2cb/0x324 [] call_softirq+0x1e/0x28 [] _show_stack+0xef/0xfe [] show_registers+0x8c/0x101 [] __die+0xa0/0xe3 [] do_page_fault+0x785/0x89d [] mark_held_locks+0x5d/0x96 [] trace_hardirqs_on+0xec/0x12c [] error_exit+0x0/0x96 [] show_trace+0x2bf/0x324 [] call_softirq+0x1e/0x28 [] dump_stack+0x15/0x1c [] skb_checksum_help+0x63/0x13b [] :iptable_nat:ip_nat_fn+0x5f/0x1d2 [] :iptable_nat:ip_nat_local_fn+0x33/0xbc [] nf_iterate+0x5a/0x9b [] dst_output+0x0/0x10 [] nf_hook_slow+0x60/0xcd [] dst_output+0x0/0x10 [] _spin_unlock_irqrestore+0x3f/0x47 [] ip_queue_xmit+0x444/0x4c0 [] tso_fragment+0x5d/0x20e [] __kmalloc_track_caller+0x109/0x11b [] tcp_transmit_skb+0x68f/0x6cf [] tso_fragment+0x1a6/0x20e [] __tcp_push_pending_frames+0x867/0x95a [] __kfree_skb+0xfc/0x101 [] tcp_data_queue+0x651/0xc39 [] tcp_rcv_established+0x72c/0x7c4 [] tcp_v4_do_rcv+0x2e/0x317 [] tcp_v4_rcv+0x9fc/0xa79 [] nf_hook_slow+0x60/0xcd [] ip_local_deliver_finish+0x0/0x1fb [] ip_local_deliver+0x199/0x270 [] ip_rcv+0x4d3/0x52b [] kfree_skb+0x2c/0x31 [] netif_receive_skb+0x1eb/0x27b [] e1000_clean_rx_irq_ps+0x5c1/0x6a0 [] e1000_clean+0x325/0x45b [] net_rx_action+0x8e/0x147 [] __do_softirq+0x64/0x105 [] __do_softirq+0x78/0x105 [] call_softirq+0x1e/0x28 [] do_softirq+0x39/0xa4 [] irq_exit+0x58/0x5a [] do_IRQ+0xb4/0xbe [] ret_from_intr+0x0/0xf Thanks, Reuben