Open-Mesh » batman-adv

Hello,

I'm running batman on 8 servers connected to each other with l2tp (mtu 1488) on Debian Jessie (3.16 kernel), batman-adv is compiled from git stable branch 2014.4.0 in debug mode:
make \
-C /usr/local/src/batman-adv \
CONFIG_BATMAN_ADV_DEBUG=y \
CONFIG_BATMAN_ADV_BLA=y \
CONFIG_BATMAN_ADV_DAT=y \
CONFIG_BATMAN_ADV_NC=n

1. batctl mm
   enabled
2. batctl b
   disabled
3. batctl ag
   enabled
4. batctl bl
   disabled
5. batctl f
   enabled

Today I got kernel panic:

[218686.064044] general protection fault: 0000 [#1] SMP
[218686.072077] Modules linked in: tun nfsd auth_rpcgss oid_registry nfs_acl nfs lockd fscache sunrpc 8021q garp mrp batman_adv(O) bonding nf_conntrack_ipv6 nf_defrag_ipv6 ip6t_rt ip6table_filter xt_NFQUEUE ip6table_mangle ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 xt_tcpudp xt_LOG xt_limit ipt_REJECT xt_recent xt_conntrack nf_conntrack xt_owner ebt_ip ebtable_broute ebtable_nat ebtable_filter ebtables iptable_filter ip_tables x_tables x86_pkg_temp_thermal intel_powerclamp intel_rapl coretemp crc32_pclmul ghash_clmulni_intel aesni_intel ipmi_devintf iTCO_wdt aes_x86_64 lrw gf128mul glue_helper ppdev iTCO_vendor_support ablk_helper cryptd evdev joydev ttm drm_kms_helper drm pcspkr parport_pc tpm_tis tpm i2c_i801 winbond_cir rc_core int3403_thermal battery shpchp lpc_ich parport video processor button
[218686.072836] mfd_core ac ipmi_si ipmi_msghandler sch_fq_codel l2tp_eth l2tp_netlink l2tp_core kvm_intel kvm bridge stp llc tcp_highspeed drbd lru_cache libcrc32c autofs4 ext4 crc16 mbcache jbd2 btrfs xor raid6_pq dm_mod raid1 md_mod hid_generic usbhid hid bcache sg sd_mod crc_t10dif crct10dif_generic ehci_pci ehci_hcd ahci xhci_hcd crct10dif_pclmul crct10dif_common libahci igb libata i2c_algo_bit crc32c_intel e1000e i2c_core dca scsi_mod ptp usbcore usb_common pps_core fan thermal thermal_sys
[218686.073380] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G O 3.16.0-4-amd64 #1 Debian 3.16.7-ckt7-1
[218686.073471] Hardware name: Intel Corporation S1200RP/S1200RP, BIOS S1200RP.86B.01.04.0002.011020141517 01/10/2014
[218686.073564] task: ffffffff8181a460 ti: ffffffff81800000 task.ti: ffffffff81800000
[218686.073647] RIP: 0010:[<ffffffffa07a5177>] [<ffffffffa07a5177>] batadv_tt_tvlv_ogm_handler_v1+0x367/0x500 [batman_adv]
[218686.073751] RSP: 0018:ffff88083fc03bb8 EFLAGS: 00010246
[218686.073802] RAX: dead000000200200 RBX: ffff880809113d7c RCX: 000000000000abe1
[218686.073884] RDX: dead000000100100 RSI: 00000000fffffe01 RDI: ffff880809113d7c
[218686.073966] RBP: ffff8808091138c0 R08: 0000000000000001 R09: 0000000000000000
[218686.074048] R10: ffff88081ba8a660 R11: ffff8808195136c0 R12: ffff8807d15028b4
[218686.074129] R13: ffff88081b012dc0 R14: ffff880807a6f0e0 R15: ffff8807d15028f8
[218686.074213] FS: 0000000000000000(0000) GS:ffff88083fc00000(0000) knlGS:0000000000000000
[218686.074298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[218686.074349] CR2: 00007fbb5add00a8 CR3: 0000000001813000 CR4: 00000000001427f0
[218686.074431] Stack:
[218686.074469] ffffffff00000044 ffff8808195136c0 ffff880809113d7c 0000000102000020
[218686.074564] ffff880800000044 0000000000000008 0000000000000044 0000000000000050
[218686.074659] ffff8807d15028b4 0000000000000000 ffff8808091138c0 ffff880809c22940
[218686.074754] Call Trace:
[218686.074794] <IRQ>
[218686.074805]
[218686.074852] [<ffffffffa079a860>] ? batadv_tvlv_containers_process+0x70/0x190 [batman_adv]
[218686.074940] [<ffffffffa079a9bd>] ? batadv_tvlv_ogm_receive+0x3d/0x50 [batman_adv]
[218686.075028] [<ffffffffa0790505>] ? batadv_iv_ogm_process_per_outif+0xc85/0x10c0 [batman_adv]
[218686.075121] [<ffffffff814b97a8>] ? ip6_input_finish+0xc8/0x410
[218686.075177] [<ffffffff8141bbcf>] ? netif_receive_skb_internal+0x1f/0x90
[218686.075243] [<ffffffffa038be82>] ? br_handle_frame_finish+0x1c2/0x3c0 [bridge]
[218686.075331] [<ffffffffa0790d92>] ? batadv_iv_ogm_receive+0x452/0x550 [batman_adv]
[218686.075416] [<ffffffff8141b5b4>] ? __netif_receive_skb_core+0x1b4/0x750
[218686.075475] [<ffffffff8101b4c5>] ? read_tsc+0x5/0x20
[218686.075531] [<ffffffffa079a300>] ? batadv_batman_skb_recv+0xf0/0x140 [batman_adv]
[218686.075616] [<ffffffff8141b933>] ? __netif_receive_skb_core+0x533/0x750
[218686.075673] [<ffffffff8141c775>] ? process_backlog+0x95/0x160
[218686.075726] [<ffffffff8141bf60>] ? net_rx_action+0x140/0x240
[218686.075781] [<ffffffff8106c5e1>] ? __do_softirq+0xf1/0x290
[218686.075834] [<ffffffff8106c9b5>] ? irq_exit+0x95/0xa0
[218686.075886] [<ffffffff81512d42>] ? do_IRQ+0x52/0xe0
[218686.075939] [<ffffffff81510bed>] ? common_interrupt+0x6d/0x6d
[218686.075990] <EOI>
[218686.075999]
[218686.076044] [<ffffffff8108ab8d>] ? __hrtimer_start_range_ns+0x1cd/0x390
[218686.076098] [<ffffffff813dcdc2>] ? cpuidle_enter_state+0x52/0xc0
[218686.076154] [<ffffffff813dcdb8>] ? cpuidle_enter_state+0x48/0xc0
[218686.076210] [<ffffffff810a7d58>] ? cpu_startup_entry+0x2f8/0x400
[218686.076264] [<ffffffff81902071>] ? start_kernel+0x492/0x49d
[218686.076318] [<ffffffff81901a04>] ? set_init_arg+0x4e/0x4e
[218686.076370] [<ffffffff81901120>] ? early_idt_handlers+0x120/0x120
[218686.076424] [<ffffffff8190171f>] ? x86_64_start_kernel+0x14d/0x15c
[218686.076476] Code: 41 ff 4d 30 0f 84 12 01 00 00 84 db 74 52 48 8b 5c 24 10 4c 89 5c 24 08 48 89 df e8 24 a9 d6 e0 49 8b 56 10 49 8b 46 18 48 89 df <48> 89 42 08 48 89 10 48 b8 00 01 10 00 00 00 ad de 49 89 46 10
[218686.076885] RIP [<ffffffffa07a5177>] batadv_tt_tvlv_ogm_handler_v1+0x367/0x500 [batman_adv]
[218686.076979] RSP <ffff88083fc03bb8>

Please ask if you need more info, I have whole memory dump done by kdump-tools using kexec.

Thanks!
Luka