Hello, I got the following OOPS with kernel 3.14.4 (debian backport for wheezy) on our internet gateway while trying to establish a new PPTP tunnel from a NAT-ed host. Seems it's 100% reproductible (reproduced 2 times, and probably a 3rd, but without backtrace. I didn't try more, since it's a production system). It seems that nat can sometimes be NULL here : https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/tree/net/ netfilter/nf_nat_core.c#n419 It looks a lot like this one : https://bugs.debian.org/741667 (2nd backtrace at the end) I have kdumps and kernel debug symbols for the second and third crashs, so let me known if you need more info (but please CC me). More info on the setup : - dual wan (multiple routing tables) with one tg3 and one e100 card - lan is a bridge between 2 vlans with another tg3 card (tg3 and br* in backtrace) - old hardware, but ECC memory, no known problems - lightly loaded - the last known good kernel was 3.11-0.bpo.2-amd64 (debian backport for wheezy) - using static conntrack helpers for PPTP and FTP only, as described by https://home.regit.org/netfilter-en/secure-use-of-helpers/ - known ctnetlink users running : ulogd2, collectd - some ipsec tunnels (xfrm in backtrace) I can try to reproduce it on a more lightweight configuration if needed. Thanks crash 7.0.6 ... KERNEL: /var/crash/201405261359/kernel_link DUMPFILE: /var/crash/201405261359/dump.201405261359 [PARTIAL DUMP] CPUS: 2 DATE: Mon May 26 13:59:14 2014 UPTIME: 00:49:24 LOAD AVERAGE: 0.03, 0.04, 0.05 TASKS: 141 NODENAME: XXXXXXXXXX RELEASE: 3.14-0.bpo.1-amd64 VERSION: #1 SMP Debian 3.14.4-1~bpo70+1 (2014-05-14) MACHINE: x86_64 (2659 Mhz) MEMORY: 3 GB PANIC: "Oops: 0002 [#1] SMP " (check log for details) PID: 0 COMMAND: "swapper/0" TASK: ffffffff81813480 (1 of 2) [THREAD_INFO: ffffffff81800000] CPU: 0 STATE: TASK_RUNNING (PANIC) crash> log ... [ 2963.801763] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 [ 2963.802147] IP: [<ffffffffa0411c41>] nf_nat_setup_info+0x471/0x890 [nf_nat] [ 2963.802475] PGD bb417067 PUD b9e94067 PMD 0 [ 2963.802720] Oops: 0002 [#1] SMP [ 2963.802892] Modules linked in: tun seqiv xfrm6_mode_tunnel xfrm4_mode_tunnel ghash_generic gcm tcp_diag inet_diag cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative xfrm_user xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 deflate ctr twofish_generic twofish_x86_64_3way twofish_x86_64 twofish_common camellia_generic camellia_x86_64 serpent_sse2_x86_64 xts serpent_generic lrw gf128mul glue_helper blowfish_generic blowfish_x86_64 blowfish_common cast5_generic cast_common ablk_helper cryptd des_generic cbc cmac xcbc rmd160 sha512_ssse3 sha512_generic sha256_ssse3 sha256_generic hmac crypto_null af_key xfrm_algo ip6table_raw ip6t_REJECT ip6t_rt ip6table_filter nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_mangle ip6_tables ipt_rpfilter xt_CT iptable_raw xt_LOG xt_helper xt_nfacct ipt_REJECT [ 2963.805701] xt_NFLOG nfnetlink_log xt_pkttype xt_addrtype sch_htb iptable_filter xt_REDIRECT xt_nat xt_state xt_policy iptable_nat nf_nat_ipv4 xt_CLASSIFY xt_limit xt_length xt_comment xt_HL xt_hl xt_statistic xt_physdev xt_TCPMSS xt_tcpudp ipt_ECN nf_conntrack_ipv4 nf_defrag_ipv4 xt_dscp xt_hashlimit xt_DSCP xt_multiport xt_mark xt_conntrack xt_connmark iptable_mangle ip_tables x_tables nfnetlink_acct nfnetlink pppoe pppox ppp_generic slhc bridge sch_fq_codel speedstep_lib 8021q garp stp mrp llc nf_nat_ftp nf_nat_pptp nf_nat_proto_gre nf_nat nf_conntrack_ftp nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack ohci_hcd iTCO_wdt acpi_cpufreq iTCO_vendor_support ttm parport_pc drm_kms_helper coretemp parport i3000_edac edac_core processor button drm lpc_ich dcdbas mfd_core psmouse serio_raw i2c_algo_bit [ 2963.805701] pcspkr thermal_sys i2c_i801 i2c_core rng_core kvm evdev ext4 crc16 mbcache jbd2 dm_mod raid1 md_mod hid_generic usbhid hid sd_mod crc_t10dif crct10dif_common sg sr_mod cdrom ata_generic ehci_pci uhci_hcd ehci_hcd ata_piix libata tg3 e1000e e100 mii scsi_mod usbcore ptp usb_common pps_core libphy [ 2963.805701] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.14-0.bpo.1-amd64 #1 Debian 3.14.4-1~bpo70+1 [ 2963.805701] Hardware name: Dell Inc. PowerEdge SC440 /0YH299, BIOS 1.5.0 09/04/2007 [ 2963.805701] task: ffffffff81813480 ti: ffffffff81800000 task.ti: ffffffff81800000 [ 2963.805701] RIP: 0010:[<ffffffffa0411c41>] [<ffffffffa0411c41>] nf_nat_setup_info+0x471/0x890 [nf_nat] [ 2963.805701] RSP: 0018:ffff8800bfa03658 EFLAGS: 00010246 [ 2963.805701] RAX: 0000000000000000 RBX: ffff880036eff758 RCX: 0000000000000000 [ 2963.805701] RDX: ffff88003689d040 RSI: 00000000de183e04 RDI: ffffffffa0414430 [ 2963.805701] RBP: 00000000000013bc R08: ffffffff81886f80 R09: ffff88003689d040 [ 2963.805701] R10: ffff8800bfa03638 R11: ffff8800b9b80000 R12: 0000000000000000 [ 2963.805701] R13: ffff8800bfa036b8 R14: 0000000000000000 R15: 0000000000000000 [ 2963.805701] FS: 0000000000000000(0000) GS:ffff8800bfa00000(0000) knlGS:0000000000000000 [ 2963.805701] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 2963.805701] CR2: 0000000000000010 CR3: 00000000bb41b000 CR4: 00000000000007f0 [ 2963.805701] Stack: [ 2963.805701] 000000000000ffff ffffffffa0413280 ffffffff81886f80 ffffffffa0512060 [ 2963.805701] ffffffffa0512068 ffffffffa0413290 ffffffff81886f80 00000000f040100a [ 2963.805701] 0000000000000000 968fa7c2000209d2 0000000000000000 0006bb0600000000 [ 2963.805701] Call Trace: [ 2963.805701] <IRQ> [ 2963.805701] [ 2963.805701] [<ffffffffa05250fd>] ? xt_snat_target_v0+0x2d/0x40 [xt_nat] [ 2963.805701] [<ffffffffa04a5260>] ? ipt_do_table+0x350/0x610 [ip_tables] [ 2963.805701] [<ffffffff81489a05>] ? xfrm_bundle_lookup+0x595/0x680 [ 2963.805701] [<ffffffffa0516214>] ? nf_nat_ipv4_fn+0x194/0x290 [iptable_nat] [ 2963.805701] [<ffffffff8143a1f0>] ? ip_fragment+0x830/0x830 [ 2963.805701] [<ffffffffa0516488>] ? nf_nat_ipv4_out+0x58/0x100 [iptable_nat] [ 2963.805701] [<ffffffff8142ebf6>] ? nf_iterate+0x86/0xc0 [ 2963.805701] [<ffffffff81436e40>] ? ip_frag_mem+0x40/0x40 [ 2963.805701] [<ffffffff8143a1f0>] ? ip_fragment+0x830/0x830 [ 2963.805701] [<ffffffff8142eca7>] ? nf_hook_slow+0x77/0x150 [ 2963.805701] [<ffffffff8143a1f0>] ? ip_fragment+0x830/0x830 [ 2963.805701] [<ffffffff8143af2a>] ? ip_output+0x7a/0x90 [ 2963.805701] [<ffffffff813fe293>] ? __netif_receive_skb_core+0x643/0x7c0 [ 2963.805701] [<ffffffff813fe510>] ? netif_receive_skb_internal+0x80/0x80 [ 2963.805701] [<ffffffff813fe4aa>] ? netif_receive_skb_internal+0x1a/0x80 [ 2963.805701] [<ffffffffa045d760>] ? br_handle_frame_finish+0x1d0/0x3f0 [bridge] [ 2963.805701] [<ffffffffa0464060>] ? br_nf_post_routing+0x310/0x310 [bridge] [ 2963.805701] [<ffffffffa045d590>] ? br_handle_local_finish+0x60/0x60 [bridge] [ 2963.805701] [<ffffffffa04641a6>] ? br_nf_pre_routing_finish+0x146/0x380 [bridge] [ 2963.805701] [<ffffffffa045d590>] ? br_handle_local_finish+0x60/0x60 [bridge] [ 2963.805701] [<ffffffffa04649df>] ? br_nf_pre_routing+0x3ff/0x650 [bridge] [ 2963.805701] [<ffffffffa045d590>] ? br_handle_local_finish+0x60/0x60 [bridge] [ 2963.805701] [<ffffffff8142ebf6>] ? nf_iterate+0x86/0xc0 [ 2963.805701] [<ffffffffa045d590>] ? br_handle_local_finish+0x60/0x60 [bridge] [ 2963.805701] [<ffffffff8142eca7>] ? nf_hook_slow+0x77/0x150 [ 2963.805701] [<ffffffffa045d590>] ? br_handle_local_finish+0x60/0x60 [bridge] [ 2963.805701] [<ffffffffa045db18>] ? br_handle_frame+0x198/0x240 [bridge] [ 2963.805701] [<ffffffffa045d980>] ? br_handle_frame_finish+0x3f0/0x3f0 [bridge] [ 2963.805701] [<ffffffff813fdfbd>] ? __netif_receive_skb_core+0x36d/0x7c0 [ 2963.805701] [<ffffffff8101d2a5>] ? read_tsc+0x5/0x20 [ 2963.805701] [<ffffffff813fe4aa>] ? netif_receive_skb_internal+0x1a/0x80 [ 2963.805701] [<ffffffff813fecb5>] ? napi_gro_receive+0xb5/0x120 [ 2963.805701] [<ffffffffa021349f>] ? tg3_poll_work+0xc8f/0xea0 [tg3] [ 2963.805701] [<ffffffff810a605f>] ? __wake_up_common+0x4f/0x80 [ 2963.805701] [<ffffffffa021c124>] ? tg3_poll+0x84/0x3c0 [tg3] [ 2963.805701] [<ffffffff813ff9a9>] ? net_rx_action+0x119/0x230 [ 2963.805701] [<ffffffff814f0f49>] ? _raw_spin_unlock_irqrestore+0x9/0x10 [ 2963.805701] [<ffffffff81069a9e>] ? __do_softirq+0xee/0x2f0 [ 2963.805701] [<ffffffff81069ebe>] ? irq_exit+0x7e/0xa0 [ 2963.805701] [<ffffffff81017211>] ? do_IRQ+0x61/0x110 [ 2963.805701] [<ffffffff814f162d>] ? common_interrupt+0x6d/0x6d [ 2963.805701] <EOI> [ 2963.805701] [ 2963.805701] [<ffffffff8101e7f0>] ? idle_notifier_register+0x10/0x10 [ 2963.805701] [<ffffffff810512c2>] ? native_safe_halt+0x2/0x10 [ 2963.805701] [<ffffffff8101e80d>] ? default_idle+0x1d/0xf0 [ 2963.805701] [<ffffffff810b7dc3>] ? cpu_startup_entry+0x93/0x270 [ 2963.805701] [<ffffffff818c6f11>] ? start_kernel+0x419/0x424 [ 2963.805701] [<ffffffff818c6911>] ? repair_env_string+0x58/0x58 [ 2963.805701] [<ffffffff818c6120>] ? early_idt_handlers+0x120/0x120 [ 2963.805701] [<ffffffff818c6120>] ? early_idt_handlers+0x120/0x120 [ 2963.805701] [<ffffffff818c672b>] ? x86_64_start_kernel+0x150/0x15f [ 2963.805701] Code: 66 f4 0d e1 48 8b 93 e0 00 00 00 31 c0 48 c1 ed 20 48 85 d2 74 0e 0f b6 4a 11 84 c9 74 06 0f b6 c1 48 01 d0 4c 8b 44 24 10 89 ed <48> 89 58 10 48 c1 e5 03 49 03 a8 88 0b 00 00 48 8b 55 00 48 89 [ 2963.805701] RIP [<ffffffffa0411c41>] nf_nat_setup_info+0x471/0x890 [nf_nat] [ 2963.805701] RSP <ffff8800bfa03658> [ 2963.805701] CR2: 0000000000000010 Note : 0x471 = 1137 crash> bt PID: 0 TASK: ffffffff81813480 CPU: 0 COMMAND: "swapper/0" #0 [ffff8800bfa032f0] machine_kexec at ffffffff8104d1e7 #1 [ffff8800bfa03350] crash_kexec at ffffffff810dc815 #2 [ffff8800bfa03420] oops_end at ffffffff814f2538 #3 [ffff8800bfa03440] no_context at ffffffff814e7e94 #4 [ffff8800bfa03490] __do_page_fault at ffffffff814f4f16 #5 [ffff8800bfa035a0] page_fault at ffffffff814f1948 [exception RIP: nf_nat_setup_info+1137] RIP: ffffffffa0411c41 RSP: ffff8800bfa03658 RFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff880036eff758 RCX: 0000000000000000 RDX: ffff88003689d040 RSI: 00000000de183e04 RDI: ffffffffa0414430 RBP: 00000000000013bc R8: ffffffff81886f80 R9: ffff88003689d040 R10: ffff8800bfa03638 R11: ffff8800b9b80000 R12: 0000000000000000 R13: ffff8800bfa036b8 R14: 0000000000000000 R15: 0000000000000000 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #6 [ffff8800bfa03740] xt_snat_target_v0 at ffffffffa05250fd [xt_nat] #7 [ffff8800bfa03780] ipt_do_table at ffffffffa04a5260 [ip_tables] #8 [ffff8800bfa038b0] nf_nat_ipv4_fn at ffffffffa0516214 [iptable_nat] #9 [ffff8800bfa03930] nf_nat_ipv4_out at ffffffffa0516488 [iptable_nat] #10 [ffff8800bfa03950] nf_iterate at ffffffff8142ebf6 #11 [ffff8800bfa039a0] nf_hook_slow at ffffffff8142eca7 #12 [ffff8800bfa03a10] ip_output at ffffffff8143af2a #13 [ffff8800bfa03a30] __netif_receive_skb_core at ffffffff813fe293 #14 [ffff8800bfa03ab0] br_handle_frame_finish at ffffffffa045d760 [bridge] #15 [ffff8800bfa03b00] br_nf_pre_routing_finish at ffffffffa04641a6 [bridge] #16 [ffff8800bfa03b60] br_nf_pre_routing at ffffffffa04649df [bridge] #17 [ffff8800bfa03bb0] nf_iterate at ffffffff8142ebf6 #18 [ffff8800bfa03c00] nf_hook_slow at ffffffff8142eca7 #19 [ffff8800bfa03c70] br_handle_frame at ffffffffa045db18 [bridge] #20 [ffff8800bfa03cb0] __netif_receive_skb_core at ffffffff813fdfbd #21 [ffff8800bfa03d30] napi_gro_receive at ffffffff813fecb5 #22 [ffff8800bfa03d60] tg3_poll_work at ffffffffa021349f [tg3] #23 [ffff8800bfa03e30] tg3_poll at ffffffffa021c124 [tg3] #24 [ffff8800bfa03e90] net_rx_action at ffffffff813ff9a9 #25 [ffff8800bfa03e98] _raw_spin_unlock_irqrestore at ffffffff814f0f49 #26 [ffff8800bfa03f00] __do_softirq at ffffffff81069a9e #27 [ffff8800bfa03f70] irq_exit at ffffffff81069ebe #28 [ffff8800bfa03f80] do_IRQ at ffffffff81017211 --- <IRQ stack> --- #29 [ffffffff81801df8] ret_from_intr at ffffffff814f162d [exception RIP: native_safe_halt+2] RIP: ffffffff810512c2 RSP: ffffffff81801ea0 RFLAGS: 00000292 RAX: ffffffff8101e7f0 RBX: ffff8800bfa0ec80 RCX: ffffffff81840d60 RDX: ffff8800bfa00000 RSI: 0000000000000000 RDI: 0000000000000096 RBP: ffffffff818a6980 R8: 0000000000000000 R9: 0000000000000000 R10: 0000000000000000 R11: 00000001000a295f R12: 0000000000000082 R13: ffffffff8101d8c5 R14: 000000018101d86d R15: ffff8800bfa143b8 ORIG_RAX: ffffffffffffffad CS: 0010 SS: 0018 #30 [ffffffff81801ea0] default_idle at ffffffff8101e80d #31 [ffffffff81801ed0] cpu_startup_entry at ffffffff810b7dc3 #32 [ffffffff81801f30] start_kernel at ffffffff818c6f11 #33 [ffffffff81801f80] x86_64_start_kernel at ffffffff818c672b crash> bt -f ... #5 [ffff8800bfa035a0] page_fault at ffffffff814f1948 [exception RIP: nf_nat_setup_info+1137] RIP: ffffffffa0411c41 RSP: ffff8800bfa03658 RFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff880036eff758 RCX: 0000000000000000 RDX: ffff88003689d040 RSI: 00000000de183e04 RDI: ffffffffa0414430 RBP: 00000000000013bc R8: ffffffff81886f80 R9: ffff88003689d040 R10: ffff8800bfa03638 R11: ffff8800b9b80000 R12: 0000000000000000 R13: ffff8800bfa036b8 R14: 0000000000000000 R15: 0000000000000000 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 ffff8800bfa035a8: 0000000000000000 0000000000000000 ffff8800bfa035b8: ffff8800bfa036b8 0000000000000000 ffff8800bfa035c8: 00000000000013bc ffff880036eff758 ffff8800bfa035d8: ffff8800b9b80000 ffff8800bfa03638 ffff8800bfa035e8: ffff88003689d040 ffffffff81886f80 ffff8800bfa035f8: 0000000000000000 0000000000000000 ffff8800bfa03608: ffff88003689d040 00000000de183e04 ffff8800bfa03618: ffffffffa0414430 ffffffffffffffff ffff8800bfa03628: ffffffffa0411c41 0000000000000010 ffff8800bfa03638: 0000000000010246 ffff8800bfa03658 ffff8800bfa03648: 0000000000000018 ffffffffa0411c1a ffff8800bfa03658: 000000000000ffff ffffffffa0413280 ffff8800bfa03668: ffffffff81886f80 ffffffffa0512060 ffff8800bfa03678: ffffffffa0512068 ffffffffa0413290 ffff8800bfa03688: ffffffff81886f80 00000000f040100a ffff8800bfa03698: 0000000000000000 968fa7c2000209d2 ffff8800bfa036a8: 0000000000000000 0006bb0600000000 ffff8800bfa036b8: 00000000f499e952 0000000000000000 ffff8800bfa036c8: 968fa7c2000209d2 0000000000000000 ffff8800bfa036d8: 0006bb0600000000 00000000968fa7c2 ffff8800bfa036e8: 0000000000000000 f499e9520002bb06 ffff8800bfa036f8: 0000000000000000 010609d200000000 ffff8800bfa03708: 000000000000ffff ffff880036eff758 ffff8800bfa03718: ffff8800ba75fd50 ffff8800b928d640 ffff8800bfa03728: ffffc900049f1ef0 ffffffffa04a94a0 ffff8800bfa03738: ffffe8ffffc01b04 ffffffffa05250fd #6 [ffff8800bfa03740] xt_snat_target_v0 at ffffffffa05250fd [xt_nat] ... crash> dis -l nf_nat_setup_info 0xffffffffa0411c15 <nf_nat_setup_info+1093>: callq 0xffffffff814f1080 <_raw_spin_lock_bh> /build/linux-v1L7fI/linux-3.14.4/net/netfilter/nf_nat_core.c: 857 0xffffffffa0411c1a <nf_nat_setup_info+1098>: mov 0xe0(%rbx),%rdx /build/linux-v1L7fI/linux-3.14.4/include/net/netfilter/nf_conntrack_extend.h: 68 0xffffffffa0411c21 <nf_nat_setup_info+1105>: xor %eax,%eax /build/linux-v1L7fI/linux-3.14.4/net/netfilter/nf_nat_core.c: 129 0xffffffffa0411c23 <nf_nat_setup_info+1107>: shr $0x20,%rbp /build/linux-v1L7fI/linux-3.14.4/include/net/netfilter/nf_conntrack_extend.h: 62 0xffffffffa0411c27 <nf_nat_setup_info+1111>: test %rdx,%rdx 0xffffffffa0411c2a <nf_nat_setup_info+1114>: je 0xffffffffa0411c3a <nf_nat_setup_info+1130> /build/linux-v1L7fI/linux-3.14.4/include/net/netfilter/nf_conntrack_extend.h: 57 0xffffffffa0411c2c <nf_nat_setup_info+1116>: movzbl 0x11(%rdx),%ecx /build/linux-v1L7fI/linux-3.14.4/include/net/netfilter/nf_conntrack_extend.h: 62 0xffffffffa0411c30 <nf_nat_setup_info+1120>: test %cl,%cl 0xffffffffa0411c32 <nf_nat_setup_info+1122>: je 0xffffffffa0411c3a <nf_nat_setup_info+1130> /build/linux-v1L7fI/linux-3.14.4/include/net/netfilter/nf_conntrack_extend.h: 70 0xffffffffa0411c34 <nf_nat_setup_info+1124>: movzbl %cl,%eax 0xffffffffa0411c37 <nf_nat_setup_info+1127>: add %rdx,%rax /build/linux-v1L7fI/linux-3.14.4/net/netfilter/nf_nat_core.c: 420 0xffffffffa0411c3a <nf_nat_setup_info+1130>: mov 0x10(%rsp),%r8 0xffffffffa0411c3f <nf_nat_setup_info+1135>: mov %ebp,%ebp /build/linux-v1L7fI/linux-3.14.4/net/netfilter/nf_nat_core.c: 419 0xffffffffa0411c41 <nf_nat_setup_info+1137>: mov %rbx,0x10(%rax) /build/linux-v1L7fI/linux-3.14.4/net/netfilter/nf_nat_core.c: 421 0xffffffffa0411c45 <nf_nat_setup_info+1141>: shl $0x3,%rbp /build/linux-v1L7fI/linux-3.14.4/net/netfilter/nf_nat_core.c: 420 0xffffffffa0411c49 <nf_nat_setup_info+1145>: add 0xb88(%r8),%rbp /build/linux-v1L7fI/linux-3.14.4/include/linux/rculist.h: 397 0xffffffffa0411c50 <nf_nat_setup_info+1152>: mov 0x0(%rbp),%rdx /build/linux-v1L7fI/linux-3.14.4/include/linux/rculist.h: 400 0xffffffffa0411c54 <nf_nat_setup_info+1156>: mov %rbp,0x8(%rax) /build/linux-v1L7fI/linux-3.14.4/include/linux/rculist.h: 399 0xffffffffa0411c58 <nf_nat_setup_info+1160>: mov %rdx,(%rax) /build/linux-v1L7fI/linux-3.14.4/include/linux/rculist.h: 402 0xffffffffa0411c5b <nf_nat_setup_info+1163>: test %rdx,%rdx /build/linux-v1L7fI/linux-3.14.4/include/linux/rculist.h: 401 0xffffffffa0411c5e <nf_nat_setup_info+1166>: mov %rax,0x0(%rbp) /build/linux-v1L7fI/linux-3.14.4/include/linux/rculist.h: 402 0xffffffffa0411c62 <nf_nat_setup_info+1170>: je 0xffffffffa0411c68 <nf_nat_setup_info+1176> /build/linux-v1L7fI/linux-3.14.4/include/linux/rculist.h: 403 0xffffffffa0411c64 <nf_nat_setup_info+1172>: mov %rax,0x8(%rdx) /build/linux-v1L7fI/linux-3.14.4/include/linux/spinlock.h: 348 0xffffffffa0411c68 <nf_nat_setup_info+1176>: mov $0xffffffffa0414430,%rdi 0xffffffffa0411c6f <nf_nat_setup_info+1183>: callq 0xffffffff814f1060 <_raw_spin_unlock_bh> Relevant gdb disassemble on module nf_nat.ko : 411 if (maniptype == NF_NAT_MANIP_SRC) { 0x0000000000000b32 <+866>: test %r12d,%r12d 0x0000000000000b35 <+869>: jne 0x1000 <nf_nat_setup_info+2096> 412 unsigned int srchash; 413 414 srchash = hash_by_src(net, nf_ct_zone(ct), 415 &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple); 416 spin_lock_bh(&nf_nat_lock); 417 /* nf_conntrack_alter_reply might re-allocate extension aera */ 418 nat = nfct_nat(ct); 419 nat->ct = ct; 0x0000000000000c41 <+1137>: mov %rbx,0x10(%rax) 420 hlist_add_head_rcu(&nat->bysource, 0x0000000000000c3a <+1130>: mov 0x10(%rsp),%r8 0x0000000000000c3f <+1135>: mov %ebp,%ebp 0x0000000000000c49 <+1145>: add 0xb88(%r8),%rbp 421 &net->ct.nat_bysource[srchash]); 0x0000000000000c45 <+1141>: shl $0x3,%rbp 422 spin_unlock_bh(&nf_nat_lock); 423 } -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
