Bluetooth: hci11: command 0x040f tx timeout
Bluetooth: hci10: command 0x0419 tx timeout
Bluetooth: hci12: command 0x040f tx timeout
Bluetooth: hci11: command 0x0419 tx timeout
Bluetooth: hci12: command 0x0419 tx timeout
INFO: task kworker/0:1:14 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/0:1     D26224    14      2 0x80000000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
 __mutex_lock_common kernel/locking/mutex.c:1016 [inline]
 __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078
 addrconf_dad_work+0x9c/0x10a0 net/ipv6/addrconf.c:3989
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
INFO: task kworker/u4:3:225 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:3    D27168   225      2 0x80000000
Workqueue: events_unbound fsnotify_connector_destroy_workfn
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794
 do_wait_for_common kernel/sched/completion.c:83 [inline]
 __wait_for_common kernel/sched/completion.c:104 [inline]
 wait_for_common+0x29c/0x470 kernel/sched/completion.c:115
 __synchronize_srcu+0x124/0x210 kernel/rcu/srcutree.c:936
 fsnotify_connector_destroy_workfn+0x49/0xa0 fs/notify/mark.c:174
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
INFO: task kworker/u4:7:9468 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:7    D27168  9468      2 0x80000000
Workqueue: events_unbound fsnotify_mark_destroy_workfn
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794
 do_wait_for_common kernel/sched/completion.c:83 [inline]
 __wait_for_common kernel/sched/completion.c:104 [inline]
 wait_for_common+0x29c/0x470 kernel/sched/completion.c:115
 __synchronize_srcu+0x124/0x210 kernel/rcu/srcutree.c:936
 fsnotify_mark_destroy_workfn+0xfd/0x340 fs/notify/mark.c:795
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
INFO: task syz-executor.1:10091 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D28536 10091   8141 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
 __mutex_lock_common kernel/locking/mutex.c:1016 [inline]
 __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078
 exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
 _synchronize_rcu_expedited+0x256/0x6f0 kernel/rcu/tree_exp.h:667
 synchronize_net+0x37/0x50 net/core/dev.c:9279
 __tun_detach+0x433/0x1320 drivers/net/tun.c:729
 tun_detach drivers/net/tun.c:762 [inline]
 tun_chr_close+0xd9/0x180 drivers/net/tun.c:3323
 __fput+0x2ce/0x890 fs/file_table.c:278
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f06c573140b
Code: Bad RIP value.
RSP: 002b:00007fff2920bfc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f06c573140b
RDX: 0000001b2fd20000 RSI: 00007f06c5120ff8 RDI: 0000000000000003
RBP: 00007f06c58a1980 R08: 0000000000000000 R09: 000000003253460c
R10: 00056961275a6a3e R11: 0000000000000293 R12: 000000000002e2fa
R13: 00007fff2920c0c0 R14: 00007f06c58a0050 R15: 0000000000000032
INFO: task syz-executor.2:10092 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2  D28648 10092   8161 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 _synchronize_rcu_expedited+0x419/0x6f0 kernel/rcu/tree_exp.h:686
 synchronize_rcu+0xc6/0x160 kernel/rcu/tree_plugin.h:818
 bcm_release+0x527/0x950 net/can/bcm.c:1590
 __sock_release+0xcd/0x2a0 net/socket.c:599
 sock_close+0x15/0x20 net/socket.c:1214
 __fput+0x2ce/0x890 fs/file_table.c:278
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f3956ff440b
Code: Bad RIP value.
RSP: 002b:00007ffd85e3f620 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007f3956ff440b
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000004
RBP: 00007f3957164980 R08: 0000000000000000 R09: 00007f3956bb7970
R10: 0000000000000000 R11: 0000000000000293 R12: 000000000002e2fd
R13: 00007ffd85e3f720 R14: 00007f3957162f80 R15: 0000000000000032
INFO: task syz-executor.0:10150 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0  D28016 10150   8138 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
 __mutex_lock_common kernel/locking/mutex.c:1016 [inline]
 __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078
 gtp_net_exit+0x1ba/0x380 drivers/net/gtp.c:1360
 ops_exit_list+0xa5/0x150 net/core/net_namespace.c:153
 setup_net+0x3d1/0x720 net/core/net_namespace.c:333
 copy_net_ns+0x1f7/0x340 net/core/net_namespace.c:439
 create_new_namespaces+0x3f6/0x7b0 kernel/nsproxy.c:107
 copy_namespaces+0x325/0x3c0 kernel/nsproxy.c:165
 copy_process.part.0+0x3a59/0x8260 kernel/fork.c:1916
 copy_process kernel/fork.c:1710 [inline]
 _do_fork+0x22f/0xf30 kernel/fork.c:2219
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f90b73e3639
Code: Bad RIP value.
RSP: 002b:00007f90b5935118 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f90b7504050 RCX: 00007f90b73e3639
RDX: 0000000020000240 RSI: 0000000000000000 RDI: 0000000042020000
RBP: 00007f90b743eae9 R08: 0000000020000540 R09: 0000000020000540
R10: 0000000020000280 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffdc07079df R14: 00007f90b5935300 R15: 0000000000022000
INFO: task syz-executor.0:10154 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0  D25528 10154  10150 0x80000002
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 exp_funnel_lock kernel/rcu/tree_exp.h:320 [inline]
 _synchronize_rcu_expedited+0x60c/0x6f0 kernel/rcu/tree_exp.h:667
 synchronize_rcu+0xc6/0x160 kernel/rcu/tree_plugin.h:818
 namespace_unlock fs/namespace.c:1363 [inline]
 drop_collected_mounts+0x178/0x1a0 fs/namespace.c:1808
 put_mnt_ns fs/namespace.c:3271 [inline]
 put_mnt_ns+0x5f/0x80 fs/namespace.c:3267
 free_nsproxy+0x41/0x220 kernel/nsproxy.c:176
 switch_task_namespaces+0xaa/0xc0 kernel/nsproxy.c:229
 do_exit+0xbee/0x2be0 kernel/exit.c:869
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode+0x277/0x2d0 arch/x86/entry/common.c:198
 retint_user+0x8/0x18
RIP: 0033:          (null)
Code: Bad RIP value.
RSP: 002b:00000000200003a8 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f90b7504050 RCX: 00007f90b73e3639
RDX: 0000000020000040 RSI: 00000000200003a0 RDI: 0000000084020000
RBP: 00007f90b743eae9 R08: 0000000020000540 R09: 0000000020000540
R10: 0000000020000080 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffdc07079df R14: 00007f90b5935300 R15: 0000000000022000

Showing all locks held in the system:
3 locks held by kworker/0:1/14:
 #0: 00000000828e7621 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 00000000caa3bead ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
 #2: 0000000021d27df7 (rtnl_mutex){+.+.}, at: addrconf_dad_work+0x9c/0x10a0 net/ipv6/addrconf.c:3989
2 locks held by kworker/u4:3/225:
 #0: 000000003b2544b4 ((wq_completion)"events_unbound"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 0000000090776f2c (connector_reaper_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
1 lock held by khungtaskd/1571:
 #0: 00000000ac237a48 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
1 lock held by khugepaged/1578:
1 lock held by in:imklog/7811:
 #0: 000000001542211e (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
1 lock held by syz-fuzzer/8105:
 #0: 00000000e9d729ef (&mm->mmap_sem){++++}, at: __do_page_fault+0x97f/0xd60 arch/x86/mm/fault.c:1348
2 locks held by kworker/u4:7/9468:
 #0: 000000003b2544b4 ((wq_completion)"events_unbound"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 0000000012fb05f8 ((reaper_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
2 locks held by kworker/1:10/9940:
2 locks held by syz-executor.1/10091:
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: tun_detach drivers/net/tun.c:759 [inline]
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: tun_chr_close+0x3a/0x180 drivers/net/tun.c:3323
 #1: 000000006522e42b (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
 #1: 000000006522e42b (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x256/0x6f0 kernel/rcu/tree_exp.h:667
3 locks held by syz-executor.2/10092:
 #0: 00000000775092a3 (&sb->s_type->i_mutex_key#13){+.+.}, at: inode_lock include/linux/fs.h:748 [inline]
 #0: 00000000775092a3 (&sb->s_type->i_mutex_key#13){+.+.}, at: __sock_release+0x86/0x2a0 net/socket.c:598
 #1: 000000004b1a59b2 (sk_lock-AF_CAN){+.+.}, at: lock_sock include/net/sock.h:1512 [inline]
 #1: 000000004b1a59b2 (sk_lock-AF_CAN){+.+.}, at: bcm_release+0x1ff/0x950 net/can/bcm.c:1558
 #2: 000000006522e42b (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
 #2: 000000006522e42b (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667
2 locks held by syz-executor.0/10150:
 #0: 000000000b048d4b (pernet_ops_rwsem){++++}, at: copy_net_ns+0x1d8/0x340 net/core/net_namespace.c:435
 #1: 0000000021d27df7 (rtnl_mutex){+.+.}, at: gtp_net_exit+0x1ba/0x380 drivers/net/gtp.c:1360
1 lock held by syz-executor.5/10184:
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779
1 lock held by syz-executor.5/10194:
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779
1 lock held by syz-executor.3/10236:
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779
1 lock held by syz-executor.1/10249:
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779
1 lock held by syz-executor.0/10261:
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779
1 lock held by syz-executor.2/10262:
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779
1 lock held by syz-executor.5/10279:
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779
1 lock held by syz-executor.1/10291:
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779
1 lock held by syz-executor.2/10302:
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779
1 lock held by syz-executor.0/10312:
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
 #0: 0000000021d27df7 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
 watchdog+0x991/0xe60 kernel/hung_task.c:287
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9940 Comm: kworker/1:10 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: events iterate_cleanup_work
RIP: 0010:rdtsc arch/x86/include/asm/msr.h:207 [inline]
RIP: 0010:rdtsc_ordered arch/x86/include/asm/msr.h:232 [inline]
RIP: 0010:pvclock_clocksource_read+0xc0/0x520 arch/x86/kernel/pvclock.c:87
Code: c1 e8 03 49 01 ed 4c 8d 5b 1b 48 01 e8 4c 8d 7b 10 48 89 44 24 20 4c 8d 53 17 4c 8d 73 1d 83 e2 fe 89 54 24 04 0f ae e8 0f 31 <48> c1 e2 20 48 8b 74 24 08 4c 89 c9 48 09 d0 41 0f b6 55 00 48 c1
RSP: 0018:ffff8880ba107d38 EFLAGS: 00000206
RAX: 000000003cbb07e2 RBX: ffffffff8c665040 RCX: 0000000000000001
RDX: 00000000000000b1 RSI: ffffffff8154936f RDI: ffffffff8c66505c
RBP: dffffc0000000000 R08: ffffffff8c665058 R09: ffffffff8c66504f
R10: ffffffff8c665057 R11: ffffffff8c66505b R12: ffffffff8c665043
R13: fffffbfff18cca09 R14: ffffffff8c66505d R15: ffffffff8c665050
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000069e80 CR3: 0000000009e6d000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 kvm_clock_read arch/x86/kernel/kvmclock.c:94 [inline]
 kvm_clock_get_cycles+0x14/0x30 arch/x86/kernel/kvmclock.c:101
 tk_clock_read kernel/time/timekeeping.c:172 [inline]
 timekeeping_get_delta kernel/time/timekeeping.c:266 [inline]
 timekeeping_get_ns kernel/time/timekeeping.c:373 [inline]
 ktime_get+0x188/0x2f0 kernel/time/timekeeping.c:758
 bcm_tx_start_timer+0xe0/0x1b0 net/can/bcm.c:385
 bcm_tx_timeout_tsklet+0x13c/0x3a0 net/can/bcm.c:416
 tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092
 </IRQ>
 do_softirq.part.0+0x160/0x1c0 kernel/softirq.c:336
 do_softirq kernel/softirq.c:328 [inline]
 __local_bh_enable_ip+0x20e/0x270 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 get_next_corpse net/netfilter/nf_conntrack_core.c:1907 [inline]
 nf_ct_iterate_cleanup+0x239/0x520 net/netfilter/nf_conntrack_core.c:1930
 nf_ct_iterate_cleanup_net net/netfilter/nf_conntrack_core.c:2015 [inline]
 nf_ct_iterate_cleanup_net+0x113/0x170 net/netfilter/nf_conntrack_core.c:2000
 iterate_cleanup_work+0x43/0xd0 net/ipv6/netfilter/nf_nat_masquerade_ipv6.c:113
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415