bisecting cause commit starting from 7e0165b2f1a912a06e381e91f0f4e495f4ac3736
building syzkaller on e30cbdae48129d22c125435cb72fc20447c7a0e2
testing commit 7e0165b2f1a912a06e381e91f0f4e495f4ac3736 with gcc (GCC) 8.1.0
kernel signature: 9820ce585513549c9d1a24b18afb83c8bc0be454
run #0: crashed: INFO: rcu detected stall in br_handle_frame
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in br_handle_frame
run #4: crashed: INFO: rcu detected stall in br_handle_frame
run #5: crashed: INFO: rcu detected stall in netlink_sendmsg
run #6: crashed: INFO: rcu detected stall in br_handle_frame
run #7: crashed: INFO: rcu detected stall in br_handle_frame
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in br_handle_frame
testing release v5.4
testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.1.0
kernel signature: 42979d8a652d516d1137b4a55bf815375034daf4
run #0: crashed: INFO: rcu detected stall in br_handle_frame
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in br_handle_frame
run #4: crashed: INFO: rcu detected stall in br_handle_frame
run #5: crashed: INFO: rcu detected stall in br_handle_frame
run #6: crashed: INFO: rcu detected stall in br_handle_frame
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in br_handle_frame
testing release v5.3
testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.1.0
kernel signature: 69dbc20ad332101425d8549136fb606a1ee1d308
all runs: crashed: INFO: rcu detected stall in br_handle_frame
testing release v5.2
testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0
kernel signature: f1ec3e80496b4348b0ce1093adcd6dfb830c0915
run #0: crashed: INFO: rcu detected stall in br_handle_frame
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in br_handle_frame
run #4: crashed: INFO: rcu detected stall in br_handle_frame
run #5: crashed: INFO: rcu detected stall in br_handle_frame
run #6: crashed: INFO: rcu detected stall in br_handle_frame
run #7: crashed: INFO: rcu detected stall in netlink_sendmsg
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in br_handle_frame
testing release v5.1
testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0
kernel signature: 5b126e27fe94836259216086568e4ff2aaba3491
run #0: crashed: INFO: rcu detected stall in br_handle_frame
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in addrconf_dad_work
run #4: crashed: INFO: rcu detected stall in br_handle_frame
run #5: crashed: INFO: rcu detected stall in addrconf_dad_work
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in br_handle_frame
run #8: crashed: INFO: rcu detected stall in netlink_sendmsg
run #9: crashed: INFO: rcu detected stall in br_handle_frame
testing release v5.0
testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0
kernel signature: 093a5fb4919821408c22e487610dd1865e55b4b9
run #0: crashed: INFO: rcu detected stall in br_handle_frame
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in br_handle_frame
run #4: crashed: INFO: rcu detected stall in br_handle_frame
run #5: crashed: INFO: rcu detected stall in br_handle_frame
run #6: crashed: INFO: rcu detected stall in br_handle_frame
run #7: crashed: INFO: rcu detected stall in addrconf_dad_work
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in addrconf_dad_work
testing release v4.20
testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0
kernel signature: eb695db94716544837b6e9b97c708004940f0e0c
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in addrconf_rs_timer
run #2: crashed: INFO: rcu detected stall in addrconf_dad_work
run #3: crashed: INFO: rcu detected stall in netlink_sendmsg
run #4: crashed: INFO: rcu detected stall in addrconf_dad_work
run #5: crashed: INFO: rcu detected stall in addrconf_dad_work
run #6: crashed: INFO: rcu detected stall in addrconf_rs_timer
run #7: crashed: INFO: rcu detected stall in addrconf_dad_work
run #8: crashed: INFO: rcu detected stall in addrconf_dad_work
run #9: crashed: INFO: rcu detected stall in addrconf_rs_timer
testing release v4.19
testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0
kernel signature: f2349935927d598ba40c8f231d918c4117bdf905
run #0: crashed: INFO: rcu detected stall in br_handle_frame
run #1: crashed: INFO: rcu detected stall in sys_umount
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in br_handle_frame
run #4: crashed: INFO: rcu detected stall in mld_dad_timer_expire
run #5: crashed: INFO: rcu detected stall in br_handle_frame
run #6: crashed: INFO: rcu detected stall in br_handle_frame
run #7: crashed: INFO: rcu detected stall in br_handle_frame
run #8: crashed: INFO: rcu detected stall in addrconf_dad_work
run #9: crashed: INFO: rcu detected stall in br_handle_frame
testing release v4.18
testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0
kernel signature: eea2ad13fe8b3bdc41b7d699366bb49e50642612
run #0: crashed: INFO: rcu detected stall in br_handle_frame
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in br_handle_frame
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in br_handle_frame
testing release v4.17
testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0
kernel signature: da32c054ad8c259908eb78da6fee6393364e647a
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in br_handle_frame
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in corrupted
testing release v4.16
testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0
kernel signature: 006acda1aeaf5d68645d4ac5061acec503254fec
run #0: crashed: INFO: rcu detected stall in br_handle_frame
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in br_handle_frame
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in br_handle_frame
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in br_handle_frame
testing release v4.15
testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0
kernel signature: 62baa590a27fc1de4f1ea7e9ec51cea74844246f
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in br_handle_frame
run #4: crashed: INFO: rcu detected stall in br_handle_frame
run #5: crashed: INFO: rcu detected stall in br_handle_frame
run #6: crashed: INFO: rcu detected stall in br_handle_frame
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in corrupted
testing release v4.14
testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0
kernel signature: 71350935d985a242f4ed3788424cb950f410f2e1
run #0: crashed: INFO: rcu detected stall in br_handle_frame
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in br_handle_frame
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in br_handle_frame
testing release v4.13
testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.1.0
kernel signature: a3caaa8bd3ef4eb54ec7e86890cc9285dd633cc0
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in br_handle_frame
run #4: crashed: INFO: rcu detected stall in br_handle_frame
run #5: crashed: INFO: rcu detected stall in br_handle_frame
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in br_handle_frame
testing release v4.12
testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c with gcc (GCC) 8.1.0
kernel signature: 01ef8c721676f94c093662a5525da215789b92e0
run #0: crashed: INFO: rcu detected stall in br_handle_frame
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in br_handle_frame
run #7: crashed: INFO: rcu detected stall in br_handle_frame
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in netlink_sendmsg
testing release v4.11
testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 with gcc (GCC) 7.3.0
kernel signature: 29a9f4161c1452a39af561c3c90ee6b4d52d2b44
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in br_handle_frame
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in br_handle_frame
testing release v4.10
testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd with gcc (GCC) 5.5.0
kernel signature: 14bb14fe86f51d7fe4bcbb1f268a7049ee34f34d
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in addrconf_dad_work
run #3: crashed: INFO: rcu detected stall in addrconf_dad_work
run #4: crashed: INFO: rcu detected stall in addrconf_dad_work
run #5: crashed: INFO: rcu detected stall in br_handle_frame
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in br_handle_frame
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in netlink_sendmsg
testing release v4.9
testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 with gcc (GCC) 5.5.0
kernel signature: 4d619737c023de298542a01cdc91e28c964a4b3d
run #0: crashed: INFO: rcu detected stall in addrconf_dad_work
run #1: crashed: INFO: rcu detected stall in addrconf_dad_work
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in br_handle_frame
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in corrupted
testing release v4.8
testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 with gcc (GCC) 5.5.0
kernel signature: 7e9445799fad3b9e853bc03249e394906a235462
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in br_handle_frame
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in br_handle_frame
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in br_handle_frame
testing release v4.7
testing commit 523d939ef98fd712632d93a5a2b588e477a7565e with gcc (GCC) 5.5.0
kernel signature: 809e4b78f471111aabb6636360352e08416c3e9c
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in br_handle_frame
run #3: crashed: INFO: rcu detected stall in br_handle_frame
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in br_handle_frame
run #8: crashed: INFO: rcu detected stall in br_handle_frame
run #9: crashed: INFO: rcu detected stall in br_handle_frame
testing release v4.6
testing commit 2dcd0af568b0cf583645c8a317dd12e344b1c72a with gcc (GCC) 5.5.0
kernel signature: 8c56ddaddba5f4c0b49d4892dfad422f14e0970b
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in addrconf_rs_timer
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in corrupted
revisions tested: 21, total time: 3h37m49.662019208s (build: 1h42m47.065583283s, test: 1h52m24.147859488s)
the crash already happened on the oldest tested release
commit msg: Linux 4.6
crash: INFO: rcu detected stall in corrupted
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'.
sch_fq: defrate 0 ignored.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
sch_fq: defrate 0 ignored.
INFO: rcu_preempt self-detected stall on CPU[  174.277258] INFO: rcu_sched detected stalls on CPUs/tasks:
	0-...: (10501 ticks this GP) idle=b53/140000000000002/0 softirq=11935/11935 fqs=10501 
	(detected by 1, t=10502 jiffies, g=-8, c=-9, q=6)
Task dump for CPU 0:
kworker/u4:6    R  running task    28800  7608      2 0x00000008
Workqueue: bat_events batadv_nc_worker
 ffff8800ab992018 ffff880127dc2088 0000000041b58ab3 ffffffff868facd7
 ffffffff81391a70 ffff880000000000 ffffffff890091c0 ffffffff88065650
 0000000000000000 ffffffff865907a0 ffff88012b038a00 ffffed002560714a
Call Trace:
INFO: rcu_preempt detected stalls on CPUs/tasks:
	0-...: (10501 ticks this GP) idle=b53/140000000000002/0 softirq=11935/11935 fqs=0 
	(detected by 1, t=10502 jiffies, g=2119, c=2118, q=791)
Task dump for CPU 0:
kworker/u4:6    R  running task    28800  7608      2 0x00000008
Workqueue: bat_events batadv_nc_worker
 ffff8800ab992018 ffff880127dc2088 0000000041b58ab3 ffffffff868facd7
 ffffffff81391a70 ffff880000000000 ffffffff890091c0 ffffffff88065650
 0000000000000000 ffffffff865907a0 ffff88012b038a00 ffffed002560714a
Call Trace:
rcu_preempt kthread starved for 10502 jiffies! g2119 c2118 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x1
rcu_preempt     S ffff88012b06fac8 29392     7      2 0x00000000
 ffff88012b06fac8 ffff88012c020400 ffff88012c020d90 ffff88012c020d68
 ffff88012c020418 ffff88012b05a188 1ffff10000000000 ffff8800abb28480
 ffff88012b05a180 ffff88012b068000 ffffed002560d001 ffff88012b068008
Call Trace:
 [<ffffffff85b5b35a>] schedule+0x9a/0x1c0 kernel/sched/core.c:3250
 [<ffffffff85b67c85>] schedule_timeout+0x2e5/0x670 kernel/time/timer.c:1531
 [<ffffffff8148e182>] rcu_gp_kthread+0xee2/0x1f70 kernel/rcu/tree.c:2126
 [<ffffffff813a3a09>] kthread+0x209/0x2d0 kernel/kthread.c:209
 [<ffffffff85b6a152>] ret_from_fork+0x22/0x50 arch/x86/entry/entry_64.S:392

	0-...: (10501 ticks this GP) idle=b53/140000000000002/0 softirq=11935/11935 fqs=39 
	 (t=10541 jiffies g=2119 c=2118 q=791)
Task dump for CPU 0:
kworker/u4:6    R  running task    28800  7608      2 0x00000008
Workqueue: bat_events batadv_nc_worker
 0000000000000002 ffff88012c006700 ffffffff813d414c ffffffff81615a00
 0000000041b58ab3 ffffffff868f20bf ffffffff813d3ec0 ffff88012c0066c0
 ffffffff81483dd4 0000000000000000 ffffed0000000000 0000000000000317
Call Trace:
 <IRQ>  [<ffffffff813d414c>] sched_show_task+0x28c/0x400 kernel/sched/core.c:4976
 [<ffffffff813dc121>] dump_cpu_task+0x71/0x90 kernel/sched/core.c:8469
 [<ffffffff81483ee1>] rcu_dump_cpu_stacks+0x191/0x290 kernel/rcu/tree.c:1246
 [<ffffffff814915a1>] print_cpu_stall kernel/rcu/tree.c:1353 [inline]
 [<ffffffff814915a1>] check_cpu_stall kernel/rcu/tree.c:1417 [inline]
 [<ffffffff814915a1>] __rcu_pending kernel/rcu/tree.c:3883 [inline]
 [<ffffffff814915a1>] rcu_pending kernel/rcu/tree.c:3947 [inline]
 [<ffffffff814915a1>] rcu_check_callbacks+0xde1/0x2010 kernel/rcu/tree.c:2772
 [<ffffffff814a3be4>] update_process_times+0x34/0x60 kernel/time/timer.c:1420
 [<ffffffff814cc4d4>] tick_sched_handle.isra.19+0x44/0xe0 kernel/time/tick-sched.c:151
 [<ffffffff814ccc14>] tick_sched_timer+0x64/0xd0 kernel/time/tick-sched.c:1178
 [<ffffffff814a58d4>] __run_hrtimer kernel/time/hrtimer.c:1242 [inline]
 [<ffffffff814a58d4>] __hrtimer_run_queues+0x2d4/0xbf0 kernel/time/hrtimer.c:1306
 [<ffffffff814a7d3d>] hrtimer_interrupt+0x19d/0x470 kernel/time/hrtimer.c:1340
 [<ffffffff812409de>] local_apic_timer_interrupt+0x6e/0xf0 arch/x86/kernel/apic/apic.c:907
 [<ffffffff85b6c836>] smp_apic_timer_interrupt+0x76/0xa0 arch/x86/kernel/apic/apic.c:931
 [<ffffffff85b6ab7c>] apic_timer_interrupt+0x8c/0xa0 arch/x86/entry/entry_64.S:621
 [<ffffffff849f7d7e>] dequeue_skb net/sched/sch_generic.c:103 [inline]
 [<ffffffff849f7d7e>] qdisc_restart net/sched/sch_generic.c:223 [inline]
 [<ffffffff849f7d7e>] __qdisc_run+0x15e/0x760 net/sched/sch_generic.c:239
 [<ffffffff8494cebe>] __dev_xmit_skb net/core/dev.c:3073 [inline]
 [<ffffffff8494cebe>] __dev_queue_xmit+0xa0e/0x1f40 net/core/dev.c:3326
 [<ffffffff8494e3fb>] dev_queue_xmit+0xb/0x10 net/core/dev.c:3392
 [<ffffffff851955db>] br_dev_queue_push_xmit+0x16b/0x540 net/bridge/br_forward.c:59
 [<ffffffff851d949a>] br_nf_dev_queue_xmit+0x1da/0x1780 net/bridge/br_netfilter_hooks.c:790
 [<ffffffff851db3c1>] NF_HOOK_THRESH include/linux/netfilter.h:219 [inline]
 [<ffffffff851db3c1>] NF_HOOK include/linux/netfilter.h:242 [inline]
 [<ffffffff851db3c1>] br_nf_post_routing+0x981/0xe30 net/bridge/br_netfilter_hooks.c:836
 [<ffffffff84b0d11e>] nf_iterate+0x13e/0x220 net/netfilter/core.c:274
 [<ffffffff84b0d366>] nf_hook_slow+0x166/0x290 net/netfilter/core.c:306
 [<ffffffff85195ac0>] nf_hook_thresh include/linux/netfilter.h:180 [inline]
 [<ffffffff85195ac0>] NF_HOOK_THRESH include/linux/netfilter.h:217 [inline]
 [<ffffffff85195ac0>] NF_HOOK include/linux/netfilter.h:242 [inline]
 [<ffffffff85195ac0>] br_forward_finish+0x110/0x180 net/bridge/br_forward.c:71
 [<ffffffff851d4a0b>] NF_HOOK_THRESH include/linux/netfilter.h:219 [inline]
 [<ffffffff851d4a0b>] br_nf_forward_finish+0x1ab/0x960 net/bridge/br_netfilter_hooks.c:566
 [<ffffffff851d6a6c>] NF_HOOK_THRESH include/linux/netfilter.h:219 [inline]
 [<ffffffff851d6a6c>] NF_HOOK include/linux/netfilter.h:242 [inline]
 [<ffffffff851d6a6c>] br_nf_forward_ip+0x95c/0x1290 net/bridge/br_netfilter_hooks.c:633
 [<ffffffff84b0d11e>] nf_iterate+0x13e/0x220 net/netfilter/core.c:274
 [<ffffffff84b0d366>] nf_hook_slow+0x166/0x290 net/netfilter/core.c:306
 [<ffffffff851966bd>] nf_hook_thresh include/linux/netfilter.h:180 [inline]
 [<ffffffff851966bd>] NF_HOOK_THRESH include/linux/netfilter.h:217 [inline]
 [<ffffffff851966bd>] NF_HOOK include/linux/netfilter.h:242 [inline]
 [<ffffffff851966bd>] __br_forward+0x34d/0x4b0 net/bridge/br_forward.c:123
 [<ffffffff8519541e>] deliver_clone+0x4e/0xa0 net/bridge/br_forward.c:168
 [<ffffffff85195dbc>] br_flood+0x28c/0x350 net/bridge/br_forward.c:227
 [<ffffffff851970f4>] br_flood_forward+0x14/0x20 net/bridge/br_forward.c:248
 [<ffffffff8519adcb>] br_handle_frame_finish+0x79b/0x1e60 net/bridge/br_input.c:202
 [<ffffffff851dd29c>] NF_HOOK_THRESH include/linux/netfilter.h:219 [inline]
 [<ffffffff851dd29c>] br_nf_pre_routing_finish_ipv6+0x5ec/0xd30 net/bridge/br_netfilter_ipv6.c:210
 [<ffffffff851debfb>] NF_HOOK_THRESH include/linux/netfilter.h:219 [inline]
 [<ffffffff851debfb>] NF_HOOK include/linux/netfilter.h:242 [inline]
 [<ffffffff851debfb>] br_nf_pre_routing_ipv6+0x31b/0x4c0 net/bridge/br_netfilter_ipv6.c:239
 [<ffffffff851dc778>] br_nf_pre_routing+0x9e8/0xf20 net/bridge/br_netfilter_hooks.c:493
 [<ffffffff84b0d11e>] nf_iterate+0x13e/0x220 net/netfilter/core.c:274
 [<ffffffff84b0d366>] nf_hook_slow+0x166/0x290 net/netfilter/core.c:306
 [<ffffffff8519caca>] nf_hook_thresh include/linux/netfilter.h:180 [inline]
 [<ffffffff8519caca>] NF_HOOK_THRESH include/linux/netfilter.h:217 [inline]
 [<ffffffff8519caca>] NF_HOOK include/linux/netfilter.h:242 [inline]
 [<ffffffff8519caca>] br_handle_frame+0x63a/0xf40 net/bridge/br_input.c:311
 [<ffffffff8493eb3f>] __netif_receive_skb_core+0x5bf/0x2d90 net/core/dev.c:4114
 [<ffffffff8494132f>] __netif_receive_skb+0x1f/0x150 net/core/dev.c:4198
 [<ffffffff849416cb>] process_backlog+0x26b/0x790 net/core/dev.c:4783
 [<ffffffff84945d31>] napi_poll net/core/dev.c:5087 [inline]
 [<ffffffff84945d31>] net_rx_action+0x721/0xe70 net/core/dev.c:5152
 [<ffffffff85b6d0ac>] __do_softirq+0x2cc/0xa06 kernel/softirq.c:273
 [<ffffffff81355107>] invoke_softirq kernel/softirq.c:350 [inline]
 [<ffffffff81355107>] irq_exit+0x157/0x190 kernel/softirq.c:391
 [<ffffffff85b6c83b>] exiting_irq arch/x86/include/asm/apic.h:658 [inline]
 [<ffffffff85b6c83b>] smp_apic_timer_interrupt+0x7b/0xa0 arch/x86/kernel/apic/apic.c:932
 [<ffffffff85b6ab7c>] apic_timer_interrupt+0x8c/0xa0 arch/x86/entry/entry_64.S:621
 <EOI>  [<ffffffff8143e074>] ? arch_local_irq_restore arch/x86/include/asm/paravirt.h:791 [inline]
 <EOI>  [<ffffffff8143e074>] ? lock_release+0x7a4/0xd30 kernel/locking/lockdep.c:3730
 [<ffffffff85a683dc>] rcu_lock_release include/linux/rcupdate.h:491 [inline]
 [<ffffffff85a683dc>] rcu_read_unlock include/linux/rcupdate.h:926 [inline]
 [<ffffffff85a683dc>] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:413 [inline]
 [<ffffffff85a683dc>] batadv_nc_worker+0x19c/0x7e0 net/batman-adv/network-coding.c:721
 [<ffffffff8139210b>] process_one_work+0x69b/0x1570 kernel/workqueue.c:2122
 [<ffffffff813930b7>] worker_thread+0xd7/0xf10 kernel/workqueue.c:2256
 [<ffffffff813a3a09>] kthread+0x209/0x2d0 kernel/kthread.c:209
 [<ffffffff85b6a152>] ret_from_fork+0x22/0x50 arch/x86/entry/entry_64.S:392