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Message-ID: <4DA8723A.8090606@simon.arlott.org.uk> Date: Fri, 15 Apr 2011 17:28:42 +0100 From: Simon Arlott <simon@...e.lp0.eu> To: Eric Dumazet <eric.dumazet@...il.com> CC: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, netdev <netdev@...r.kernel.org>, Netfilter Development Mailinglist <netfilter-devel@...r.kernel.org> Subject: Re: BUG: unable to handle kernel NULL pointer dereference at 000002c0 / IP: [<c04c70f2>] in6_dev_finish_destroy+0x35/0x8c and again with the patch reverted... [ 470.965098] BUG: unable to handle kernel paging request at a1fd3e8b [ 470.966008] IP: [<c04d89a7>] icmpv6_send+0x5c3/0x6e2 [ 470.966008] *pdpt = 00000000318f2001 *pde = 0000000000000000 [ 470.966008] Oops: 0002 [#1] PREEMPT SMP [ 470.966008] last sysfs file: /sys/devices/platform/it87.552/cpu0_vid [ 470.966008] Modules linked in: nf_conntrack_ipv6 xt_tcpmss xt_length xt_TCPMSS ppp_synctty sch_sfq xt_u32 xt_CLASSIFY sch_htb ppp_async rfcomm bnep l2cap crc16 nfsd lockd sunrpc exportfs xt_state ip6t_LOG ip] [ 470.966008] [ 470.966008] Pid: 3, comm: ksoftirqd/0 Not tainted 2.6.35.4-git+ #git+ GA-MA69VM-S2/GA-MA69VM-S2 [ 470.966008] EIP: 0060:[<c04d89a7>] EFLAGS: 00010286 CPU: 0 [ 470.966008] EIP is at icmpv6_send+0x5c3/0x6e2 [ 470.966008] EAX: 00000000 EBX: a1fd3daf ECX: 00000000 EDX: 00000001 [ 470.966008] ESI: f6f1adb4 EDI: 00000000 EBP: f7483c4c ESP: f7483b48 [ 470.966008] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 [ 470.966008] Process ksoftirqd/0 (pid: 3, ti=f7482000 task=f74800a0 task.ti=f7482000) [ 470.966008] Stack: [ 470.966008] f493fec0 f7483b5c c0513fe0 00033acf 00033ab5 f7483b7c c022e74d 00000046 [ 470.966008] <0> fffffd8a 00033acf 00000001 0101001a f1a2984c 00000500 f6f1aac0 f6f1adb4 [ 470.966008] <0> f1a2985c 00000000 00000040 f6f1aaf0 00000000 00000000 00000000 b0060120 [ 470.966008] Call Trace: [ 470.966008] [<c0513fe0>] ? _raw_spin_unlock_irqrestore+0x42/0x58 [ 470.966008] [<c022e74d>] ? release_console_sem+0x197/0x1c4 [ 470.966008] [<fa73c0b5>] ? reject_tg6+0x70/0x43f [ip6t_REJECT] [ 470.966008] [<fa7619b1>] ? ip6t_log_packet+0x15d/0x167 [ip6t_LOG] [ 470.966008] [<c024e201>] ? trace_hardirqs_on+0xb/0xd [ 470.966008] [<c0232a72>] ? local_bh_enable_ip+0x97/0xad [ 470.966008] [<c0513f59>] ? _raw_spin_unlock_bh+0x2f/0x32 [ 470.966008] [<fa7619b1>] ? ip6t_log_packet+0x15d/0x167 [ip6t_LOG] [ 470.966008] [<fa6290f0>] ? ipv6_find_hdr+0x48/0x164 [ip6_tables] [ 470.966008] [<fa6297c1>] ? ip6t_do_table+0x4c8/0x53e [ip6_tables] [ 470.966008] [<fa6cf0f0>] ? ip6table_mangle_hook+0xf0/0x100 [ip6table_mangle] [ 470.966008] [<fa634018>] ? ip6table_filter_hook+0x18/0x20 [ip6table_filter] [ 470.966008] [<c046ee87>] ? nf_iterate+0x2f/0x62 [ 470.966008] [<c04c40c8>] ? ip6_input_finish+0x0/0x3db [ 470.966008] [<c046f088>] ? nf_hook_slow+0x63/0xeb [ 470.966008] [<c04c40c8>] ? ip6_input_finish+0x0/0x3db [ 470.966008] [<c04c44d6>] ? ip6_input+0x33/0x47 [ 470.966008] [<c04c40c8>] ? ip6_input_finish+0x0/0x3db [ 470.966008] [<c04c4775>] ? ip6_rcv_finish+0x8b/0x8e [ 470.966008] [<fc81ea3a>] ? nf_ct_frag6_output+0x7c/0x95 [nf_conntrack_ipv6] [ 470.966008] [<fc81e45c>] ? ipv6_defrag+0x87/0x9f [nf_conntrack_ipv6] [ 470.966008] [<c04c46ea>] ? ip6_rcv_finish+0x0/0x8e [ 470.966008] [<c046ee87>] ? nf_iterate+0x2f/0x62 [ 470.966008] [<c04c46ea>] ? ip6_rcv_finish+0x0/0x8e [ 470.966008] [<c046f088>] ? nf_hook_slow+0x63/0xeb [ 470.966008] [<c04c46ea>] ? ip6_rcv_finish+0x0/0x8e [ 470.966008] [<c04c4aff>] ? ipv6_rcv+0x387/0x47c [ 470.966008] [<c04c46ea>] ? ip6_rcv_finish+0x0/0x8e [ 470.966008] [<c0455065>] ? __netif_receive_skb+0x367/0x3b6 [ 470.966008] [<c0455142>] ? process_backlog+0x8e/0x146 [ 470.966008] [<c0455c3b>] ? net_rx_action+0x62/0x119 [ 470.966008] [<c0232750>] ? __do_softirq+0x8b/0x10a [ 470.966008] [<c02327fa>] ? do_softirq+0x2b/0x43 [ 470.966008] [<c0232885>] ? run_ksoftirqd+0x73/0x155 [ 470.966008] [<c0232812>] ? run_ksoftirqd+0x0/0x155 [ 470.966008] [<c023fdbd>] ? kthread+0x61/0x66 [ 470.966008] [<c023fd5c>] ? kthread+0x0/0x66 [ 470.966008] [<c0202c7a>] ? kernel_thread_helper+0x6/0x1a [ 470.966008] Code: e8 1b da d4 ff 68 48 89 4d c0 31 c9 31 d2 b8 58 11 68 c0 6a 00 6a 01 6a 02 e8 37 76 d7 ff 8b 9b 60 01 00 00 83 c4 10 85 db 74 07 <f0> ff 83 dc 00 00 00 b9 ae 89 4d c0 ba 01 00 00 00 b8 58 1 [ 470.966008] EIP: [<c04d89a7>] icmpv6_send+0x5c3/0x6e2 SS:ESP 0068:f7483b48 [ 470.966008] CR2: 00000000a1fd3e8b [ 471.387732] ---[ end trace a325ca681eff783c ]--- [ 471.388770] __iptables__: l2tp_2 IN=aaisp3 OUT= MAC= SRC=2001:0678:0001:0000:0000:0000:0000:0001 DST=2001:08b0:ffea:0000:0053:4150:5841:0001 LEN=430 TC=0 HOPLIMIT=60 FLOWLBL=0 PROTO=UDP SPT=53 DPT=22008 LEN= [ 471.388833] __iptables__: l2tp_2 IN=aaisp3 OUT= MAC= SRC=80.68.89.159 DST=81.2.80.67 LEN=143 TOS=0x00 PREC=0x00 TTL=59 ID=12462 PROTO=UDP SPT=53 DPT=36911 LEN=123 [ 471.388874] __iptables__: l2tp_2 IN=aaisp3 OUT= MAC= SRC=208.94.149.2 DST=81.2.80.67 LEN=116 TOS=0x00 PREC=0x00 TTL=58 ID=22935 PROTO=UDP SPT=53 DPT=10068 LEN=96 [ 471.443611] Kernel panic - not syncing: Fatal exception in interrupt [ 471.444704] __iptables__: l2tp_2 IN=aaisp3 OUT= MAC= SRC=208.94.148.2 DST=81.2.80.67 LEN=120 TOS=0x00 PREC=0x00 TTL=58 ID=41552 PROTO=UDP SPT=53 DPT=27444 LEN=100 [ 471.444739] __iptables__: l2tp_2 IN=aaisp3 OUT= MAC= SRC=2a01:06d0:0001:0000:0000:0000:0000:0002 DST=2001:08b0:ffea:0000:0053:4150:5841:0001 LEN=109 TC=0 HOPLIMIT=56 FLOWLBL=0 PROTO=UDP SPT=53 DPT=31279 LEN= [ 471.484694] Pid: 3, comm: ksoftirqd/0 Tainted: G D 2.6.35.4-git+ #git+ [ 471.492318] Call Trace: [ 471.494885] [<c0511194>] ? printk+0xf/0x13 [ 471.499161] [<c0511116>] panic+0x55/0xc4 [ 471.503331] [<c02050ed>] oops_end+0x6e/0x7c [ 471.507768] [<c021a514>] no_context+0x13f/0x149 [ 471.512534] [<c021a657>] __bad_area_nosemaphore+0x139/0x141 [ 471.518341] [<c04cef8d>] ? fib6_lookup+0x48/0x5c [ 471.523203] [<c04cdd75>] ? ip6_pol_route+0x208/0x223 [ 471.528422] [<c024e201>] ? trace_hardirqs_on+0xb/0xd [ 471.533608] [<c0232a72>] ? local_bh_enable_ip+0x97/0xad [ 471.539055] [<c0513d08>] ? _raw_read_unlock_bh+0x2f/0x32 [ 471.544620] [<c04cdd75>] ? ip6_pol_route+0x208/0x223 [ 471.549821] [<c021a66c>] bad_area_nosemaphore+0xd/0x10 [ 471.555192] [<c021a910>] do_page_fault+0x14e/0x302 [ 471.560145] [<c04b3486>] ? __xfrm_lookup+0x32d/0x38b [ 471.565396] [<c04e8bbe>] ? fib6_rule_lookup+0x35/0x77 [ 471.570720] [<c021a7c2>] ? do_page_fault+0x0/0x302 [ 471.575807] [<c051499b>] error_code+0x6b/0x70 [ 471.580443] [<c021a7c2>] ? do_page_fault+0x0/0x302 [ 471.585476] [<c04d89a7>] ? icmpv6_send+0x5c3/0x6e2 [ 471.590527] [<c0513fe0>] ? _raw_spin_unlock_irqrestore+0x42/0x58 [ 471.596755] [<c022e74d>] ? release_console_sem+0x197/0x1c4 [ 471.602547] [<fa73c0b5>] reject_tg6+0x70/0x43f [ip6t_REJECT] [ 471.608472] [<fa7619b1>] ? ip6t_log_packet+0x15d/0x167 [ip6t_LOG] [ 471.614834] [<c024e201>] ? trace_hardirqs_on+0xb/0xd [ 471.620120] [<c0232a72>] ? local_bh_enable_ip+0x97/0xad [ 471.625575] [<c0513f59>] ? _raw_spin_unlock_bh+0x2f/0x32 [ 471.631145] [<fa7619b1>] ? ip6t_log_packet+0x15d/0x167 [ip6t_LOG] [ 471.637519] [<fa6290f0>] ? ipv6_find_hdr+0x48/0x164 [ip6_tables] [ 471.643794] [<fa6297c1>] ip6t_do_table+0x4c8/0x53e [ip6_tables] [ 471.650014] [<fa6cf0f0>] ? ip6table_mangle_hook+0xf0/0x100 [ip6table_mangle] [ 471.657364] [<fa634018>] ip6table_filter_hook+0x18/0x20 [ip6table_filter] [ 471.664419] [<c046ee87>] nf_iterate+0x2f/0x62 [ 471.668935] [<c04c40c8>] ? ip6_input_finish+0x0/0x3db [ 471.674231] [<c046f088>] nf_hook_slow+0x63/0xeb [ 471.678999] [<c04c40c8>] ? ip6_input_finish+0x0/0x3db [ 471.684321] [<c04c44d6>] ip6_input+0x33/0x47 [ 471.688851] [<c04c40c8>] ? ip6_input_finish+0x0/0x3db [ 471.694097] [<c04c4775>] ip6_rcv_finish+0x8b/0x8e [ 471.699002] [<fc81ea3a>] nf_ct_frag6_output+0x7c/0x95 [nf_conntrack_ipv6] [ 471.706039] [<fc81e45c>] ipv6_defrag+0x87/0x9f [nf_conntrack_ipv6] [ 471.712470] [<c04c46ea>] ? ip6_rcv_finish+0x0/0x8e [ 471.717471] [<c046ee87>] nf_iterate+0x2f/0x62 [ 471.722013] [<c04c46ea>] ? ip6_rcv_finish+0x0/0x8e [ 471.727013] [<c046f088>] nf_hook_slow+0x63/0xeb [ 471.731703] [<c04c46ea>] ? ip6_rcv_finish+0x0/0x8e [ 471.736764] [<c04c4aff>] ipv6_rcv+0x387/0x47c [ 471.741384] [<c04c46ea>] ? ip6_rcv_finish+0x0/0x8e [ 471.746438] [<c0455065>] __netif_receive_skb+0x367/0x3b6 [ 471.752011] [<c0455142>] process_backlog+0x8e/0x146 [ 471.757063] [<c0455c3b>] net_rx_action+0x62/0x119 [ 471.761994] [<c0232750>] __do_softirq+0x8b/0x10a [ 471.766822] [<c02327fa>] do_softirq+0x2b/0x43 [ 471.771354] [<c0232885>] run_ksoftirqd+0x73/0x155 [ 471.776252] [<c0232812>] ? run_ksoftirqd+0x0/0x155 [ 471.781253] [<c023fdbd>] kthread+0x61/0x66 [ 471.785544] [<c023fd5c>] ? kthread+0x0/0x66 [ 471.789957] [<c0202c7a>] kernel_thread_helper+0x6/0x1a [ 471.795306] Rebooting in 10 seconds.. -- Simon Arlott -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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