Hello, sorry for asking you about an old version of kernel and netfilter, but now i'm not able to upgrade our server : We have a debian lenny with asterisk 1.4 serving about 30 simultaneous calls and 100 peers. Linux pbx1 2.6.26-2-686 #1 SMP Sun Mar 4 22:19:19 UTC 2012 i686 GNU/Linux iptables v1.4.2 asterisk 1.4.43 Modules loaded : nf_conntrack nf_conntrack_sip,xt_state,nf_conntrack_ipv6,xt_conntrack,nf_conntrack_h323,nf_conntrack_amanda,nf_conntrack_pptp,nf_conntrack_netlink,nf_nat,nf_conntrack_ipv4,nf_conntrack_netbios_ns,nf_conntrack_proto_gre,nf_conntrack_proto_udplite,nf_conntrack_proto_sctp,nf_conntrack_ftp,nf_conntrack_proto_dccp,nf_conntrack_tftp,nf_conntrack_sane,nf_conntrack_irc It was very stable but last saturday with low traffic, we had our first kernel oops since two years (see below) I'd like ask to experts : do you recognize this kernel oops ? (sip_help, ipv4_confirm ..) What could be the cause ? (i repeat : there was very low traffic) My debian box has an public ip. Can i unload safely nf_conntrack_sip module without any problem in order to avoid this oops in the future ? Thanks a lot for you replies.. !! Here the oops : Jun 16 12:49:25 pbx kernel: [6659154.690478] BUG: unable to handle kernel NULL pointer dereference at 00000000 Jun 16 12:49:25 pbx kernel: [6659154.690478] IP: [<00000000>] Jun 16 12:49:25 pbx kernel: [6659154.690478] *pde = 00000000 Jun 16 12:49:25 pbx kernel: [6659154.690478] Oops: 0000 [#1] SMP Jun 16 12:49:25 pbx kernel: [6659154.690478] Modules linked in: ipt_LOG xt_DSCP iptable_mangle nf_conntrack_ipv6 xt_tcpudp xt_multiport xt_state ip6table_filter ip6_tables iptable_filter ip_tables ipv6 nf_conntrack_sip xt_conntrack x_tables nf_conntrack_h323 ts_kmp nf_conntrack_amanda nf_conntrack_pptp nf_conntrack_netlink nfnetlink nf_nat nf_conntrack_ipv4 nf_conntrack_netbios_ns nf_conntrack_proto_gre nf_conntrack_proto_udplite nf_conntrack_proto_sctp nf_conntrack_ftp nf_conntrack_proto_dccp nf_conntrack_tftp nf_conntrack_sane nf_conntrack_irc nf_conntrack crc_ccitt loop serio_raw evdev snd_pcm psmouse snd_timer snd soundcore snd_page_alloc button pcspkr dcdbas ext3 jbd mbcache sg sr_mod cdrom ide_pci_generic ide_core ata_piix ses enclosure sd_mod ata_generic ehci_hcd libata uhci_hcd megaraid_sas dock usbcore scsi_mod bnx2 firmware_class thermal processor fan thermal_sys [last unloaded: nf_conntrack_ipv6] Jun 16 12:49:25 pbx kernel: [6659154.690478] Jun 16 12:49:25 pbx kernel: [6659154.690478] Pid: 19655, comm: asterisk Not tainted (2.6.26-2-686 #1) Jun 16 12:49:25 pbx kernel: [6659154.690478] EIP: 0060:[<00000000>] EFLAGS: 00010246 CPU: 0 Jun 16 12:49:25 pbx kernel: [6659154.690478] EIP is at 0x0 Jun 16 12:49:25 pbx kernel: [6659154.690478] EAX: d505c080 EBX: f8bd38e0 ECX: f7d89c5c EDX: f7d89c58 Jun 16 12:49:25 pbx kernel: [6659154.690478] ESI: 0000016b EDI: d505c080 EBP: 00001902 ESP: f7d89c3c Jun 16 12:49:25 pbx kernel: [6659154.690478] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 Jun 16 12:49:25 pbx kernel: [6659154.690478] Process asterisk (pid: 19655, ti=f7d88000 task=f79a48c0 task.ti=f7d88000) Jun 16 12:49:25 pbx kernel: [6659154.690478] Stack: f8bd24d3 00001902 000000c8 f7cd87fc 000000c8 00000004 00000166 f7e9102c Jun 16 12:49:25 pbx kernel: [6659154.690478] 0000027c f8bd5720 d505c080 f7cd87fc 00000003 f89f133e 00000003 f89f3cf0 Jun 16 12:49:25 pbx kernel: [6659154.690478] f7d89cc0 00000004 d505c080 c026e9b0 f7b20000 c0276c22 c0375ac0 00000004 Jun 16 12:49:25 pbx kernel: [6659154.690478] Call Trace: Jun 16 12:49:25 pbx kernel: [6659154.690478] [<f8bd24d3>] sip_help+0x206/0x247 [nf_conntrack_sip] Jun 16 12:49:25 pbx kernel: [6659154.690478] [<f89f133e>] ipv4_confirm+0x58/0xb4 [nf_conntrack_ipv4] Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c026e9b0>] nf_iterate+0x30/0x61 Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c0276c22>] ip_finish_output+0x0/0x1fc Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c026ea3f>] nf_hook_slow+0x3a/0x90 Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c0276c22>] ip_finish_output+0x0/0x1fc Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c027709e>] ip_output+0x6c/0x7e Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c0276c22>] ip_finish_output+0x0/0x1fc Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c027696e>] ip_local_out+0x15/0x17 Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c0276bc8>] ip_push_pending_frames+0x258/0x2b2 Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c028e272>] udp_push_pending_frames+0x2b0/0x315 Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c028f252>] udp_sendmsg+0x43a/0x51b Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c028e272>] udp_push_pending_frames+0x2b0/0x315 Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c028f252>] udp_sendmsg+0x43a/0x51b Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c02940b4>] inet_sendmsg+0x35/0x3f Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c024f863>] sock_sendmsg+0xc7/0xe1 Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c0131ab0>] autoremove_wake_function+0x0/0x2d Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c0182bfa>] dput+0x15/0xbb Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c017cb6d>] __link_path_walk+0xb0b/0xb26 Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c0119cd9>] __dequeue_entity+0x1f/0x71 Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c0102973>] __switch_to+0xa5/0x125 Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c0187010>] mntput_no_expire+0x13/0xd9 Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c0250147>] sys_sendto+0x105/0x130 Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c017ce6e>] do_path_lookup+0x122/0x184 Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c01771f1>] cp_new_stat64+0xfc/0x10e Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c0250a3c>] sys_socketcall+0x106/0x19e Jun 16 12:49:25 pbx kernel: [6659154.690478] [<c0103857>] sysenter_past_esp+0x78/0xb1 Jun 16 12:49:25 pbx kernel: [6659154.690478] ======================= Jun 16 12:49:25 pbx kernel: [6659154.690478] Code: Bad EIP value. Jun 16 12:49:25 pbx kernel: [6659154.690478] EIP: [<00000000>] 0x0 SS:ESP 0068:f7d89c3c Jun 16 12:49:25 pbx kernel: [6659154.691249] ---[ end trace aadebb1841a14c44 ]--- Jun 16 17:23:02 pbx kernel: [6675785.324578] php invoked oom-killer: gfp_mask=0x84d0, order=0, oomkilladj=0 Jun 16 17:23:02 pbx kernel: [6675785.324614] Pid: 2193, comm: php Tainted: G D 2.6.26-2-686 #1 Jun 16 17:23:02 pbx kernel: [6675785.324653] [<c0159252>] oom_kill_process+0x4f/0x195 Jun 16 17:23:02 pbx kernel: [6675785.324694] [<c015967c>] out_of_memory+0x14e/0x17f Jun 16 17:23:02 pbx kernel: [6675785.324730] [<c015b5e4>] __alloc_pages_internal+0x2b8/0x34e Jun 16 17:23:02 pbx kernel: [6675785.324768] [<c015b686>] __alloc_pages+0x7/0x9 Jun 16 17:23:02 pbx kernel: [6675785.324798] [<c01173c9>] pte_alloc_one+0x12/0x2d Jun 16 17:23:02 pbx kernel: [6675785.324830] [<c016337e>] __pte_alloc+0x11/0x82 Jun 16 17:23:02 pbx kernel: [6675785.324864] [<c01638a7>] copy_page_range+0x102/0x3d4 Jun 16 17:23:02 pbx kernel: [6675785.324899] [<c011731d>] pgd_alloc+0xb5/0xd6 Jun 16 17:23:02 pbx kernel: [6675785.324933] [<c0120a34>] dup_mm+0x226/0x2f8 Jun 16 17:23:02 pbx kernel: [6675785.324969] [<c01213e3>] copy_process+0x8ba/0xf73 Jun 16 17:23:02 pbx kernel: [6675785.325004] [<c0121bb5>] do_fork+0xab/0x1dc Jun 16 17:23:02 pbx kernel: [6675785.325036] [<c0179dea>] do_pipe+0x7e/0xbd Jun 16 17:23:02 pbx kernel: [6675785.325070] [<c0102199>] sys_clone+0x22/0x26 Jun 16 17:23:02 pbx kernel: [6675785.325101] [<c0103857>] sysenter_past_esp+0x78/0xb1 Jun 16 17:23:02 pbx kernel: [6675785.325136] [<c02b0000>] quirk_nopciamd+0x10/0x4a Jun 16 17:23:02 pbx kernel: [6675785.325170] ======================= Jun 16 17:23:02 pbx kernel: [6675785.325195] Mem-info: Jun 16 17:23:02 pbx kernel: [6675785.325216] DMA per-cpu: Jun 16 17:23:02 pbx kernel: [6675785.325239] CPU 0: hi: 0, btch: 1 usd: 0 Jun 16 17:23:02 pbx kernel: [6675785.325266] CPU 1: hi: 0, btch: 1 usd: 0 Jun 16 17:23:02 pbx kernel: [6675785.325293] CPU 2: hi: 0, btch: 1 usd: 0 Jun 16 17:23:02 pbx kernel: [6675785.325321] CPU 3: hi: 0, btch: 1 usd: 0 -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
