INFO: task kworker/u8:1:13 blocked  for more than 145 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:1    state:D stack:23384 pid:13    tgid:13    ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
 <TASK>
 __schedule+0x153e/0x5070
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7fe/0x1300
 addrconf_dad_work+0x11e/0x14c0
 process_one_work+0x949/0x1650
 worker_thread+0x9af/0xee0
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task dhcpcd:5550 blocked  for more than 146 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd          state:D stack:21248 pid:5550  tgid:5550  ppid:5549   task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x153e/0x5070
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7fe/0x1300
 inet_rtm_newaddr+0x404/0x1ad0
 rtnetlink_rcv_msg+0x7d5/0xbe0
 netlink_rcv_skb+0x232/0x4b0
 netlink_unicast+0x80f/0x9b0
 netlink_sendmsg+0x813/0xb40
 sock_sendmsg_nosec+0x18f/0x1d0
 ____sys_sendmsg+0x589/0x8c0
 ___sys_sendmsg+0x2a5/0x360
 __x64_sys_sendmsg+0x1bd/0x2a0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3aaad4ea4b
RSP: 002b:00007ffcee533bd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f3aaac766c0 RCX: 00007f3aaad4ea4b
RDX: 0000000000000000 RSI: 00007ffcee547d88 RDI: 0000000000000042
RBP: 0000000000000042 R08: 0000000000000000 R09: 00007ffcee547d88
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 00007ffcee547d88 R14: 0000000000000044 R15: 0000000000000001
 </TASK>
INFO: task kworker/u8:3:5835 blocked  for more than 146 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:3    state:D stack:22952 pid:5835  tgid:5835  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 __schedule+0x153e/0x5070
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7fe/0x1300
 ipmr_net_exit_batch+0x20/0x90
 ops_undo_list+0x52b/0x940
 cleanup_net+0x4df/0x7b0
 process_one_work+0x949/0x1650
 worker_thread+0x9af/0xee0
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task syz-executor:24692 blocked  for more than 146 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21480 pid:24692 tgid:24692 ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x153e/0x5070
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7fe/0x1300
 register_nexthop_notifier+0x88/0x290
 nsim_fib_create+0x813/0xa10
 nsim_drv_probe+0x803/0xc20
 really_probe+0x267/0xaf0
 __driver_probe_device+0x18c/0x320
 driver_probe_device+0x4f/0x240
 __device_attach_driver+0x2d4/0x4c0
 bus_for_each_drv+0x258/0x2f0
 __device_attach+0x2c5/0x450
 device_initial_probe+0xa1/0xd0
 bus_probe_device+0x12a/0x220
 device_add+0x7b6/0xb70
 new_device_store+0x37b/0x710
 kernfs_fop_write_iter+0x3af/0x540
 vfs_write+0x61d/0xb90
 ksys_write+0x150/0x270
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7aa855b58e
RSP: 002b:00007fffe267f6a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000555570094500 RCX: 00007f7aa855b58e
RDX: 0000000000000003 RSI: 00007fffe267f730 RDI: 0000000000000005
RBP: 00007f7aa8608a84 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 00007fffe267f730 R14: 00007f7aa9344620 R15: 0000000000000003
 </TASK>
INFO: task syz.7.4820:24739 blocked  for more than 146 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.4820      state:D stack:25760 pid:24739 tgid:24739 ppid:24125  task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x153e/0x5070
 schedule+0x164/0x360
 schedule_timeout+0xc3/0x2c0
 wait_for_completion+0x2cc/0x5e0
 __synchronize_srcu+0x329/0x3e0
 perf_event_detach_bpf_prog+0x2a5/0x330
 bpf_perf_link_release+0x5c/0x80
 bpf_link_free+0xed/0x330
 bpf_link_release+0x6b/0x80
 __fput+0x44f/0xa70
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0xed/0x480
 do_syscall_64+0x32d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f313719acb9
RSP: 002b:00007ffc808fc0d8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f3137417da0 RCX: 00007f313719acb9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f3137417da0 R08: 0000000000000006 R09: 0000000000000000
R10: 00007f3137417cb0 R11: 0000000000000246 R12: 00000000000db474
R13: 00007f3137415fac R14: 00000000000db1c5 R15: 00007f3137415fa0
 </TASK>
INFO: task syz-executor:24758 blocked  for more than 146 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:26864 pid:24758 tgid:24758 ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x153e/0x5070
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7fe/0x1300
 inet_rtm_newaddr+0x404/0x1ad0
 rtnetlink_rcv_msg+0x7d5/0xbe0
 netlink_rcv_skb+0x232/0x4b0
 netlink_unicast+0x80f/0x9b0
 netlink_sendmsg+0x813/0xb40
 sock_sendmsg_nosec+0x18f/0x1d0
 __sys_sendto+0x3ff/0x590
 __x64_sys_sendto+0xde/0x100
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0d36b5b58e
RSP: 002b:00007fffa64c5768 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000055558d773500 RCX: 00007f0d36b5b58e
RDX: 0000000000000028 RSI: 00007f0d37944670 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00007fffa64c57e4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f0d37944670 R15: 0000000000000000
 </TASK>
INFO: task syz-executor:24762 blocked  for more than 146 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:26248 pid:24762 tgid:24762 ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x153e/0x5070
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7fe/0x1300
 inet_rtm_newaddr+0x404/0x1ad0
 rtnetlink_rcv_msg+0x7d5/0xbe0
 netlink_rcv_skb+0x232/0x4b0
 netlink_unicast+0x80f/0x9b0
 netlink_sendmsg+0x813/0xb40
 sock_sendmsg_nosec+0x18f/0x1d0
 __sys_sendto+0x3ff/0x590
 __x64_sys_sendto+0xde/0x100
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0672d5b58e
RSP: 002b:00007fffda747c28 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000555560230500 RCX: 00007f0672d5b58e
RDX: 0000000000000028 RSI: 00007f0673b44670 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00007fffda747ca4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f0673b44670 R15: 0000000000000000
 </TASK>

Showing all locks held in the system:
3 locks held by kworker/u8:1/13:
 #0: ffff88816d4ce948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x855/0x1650
 #1: ffffc90000127c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x87c/0x1650
 #2: ffffffff8f9c3d08 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0x11e/0x14c0
1 lock held by khungtaskd/35:
 #0: ffffffff8e560120 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
6 locks held by kworker/u11:1/5196:
 #0: ffff88811119b948 ((wq_completion)hci0){+.+.}-{0:0}, at: process_one_work+0x855/0x1650
 #1: ffffc90004ab7c40 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x87c/0x1650
 #2: ffff888116b50ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400
 #3: ffff888116b500c0 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x8a3/0xed0
 #4: ffffffff8fb505c8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_failed+0x165/0x340
 #5: ffff8881bfbcb2f8 (&conn->lock#2){+.+.}-{4:4}, at: l2cap_conn_del+0x7b/0x5c0
1 lock held by dhcpcd/5550:
 #0: ffffffff8f9c3d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x404/0x1ad0
2 locks held by getty/5632:
 #0: ffff8881124250a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc90002a202f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
5 locks held by kworker/u11:4/5815:
 #0: ffff88811ef9c948 ((wq_completion)hci1){+.+.}-{0:0}, at: process_one_work+0x855/0x1650
 #1: ffffc90004ce7c40 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x87c/0x1650
 #2: ffff8881190bcec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400
 #3: ffff8881190bc0c0 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x8a3/0xed0
 #4: ffffffff8e5663b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770
4 locks held by kworker/u8:3/5835:
 #0: ffff8881012ae148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x855/0x1650
 #1: ffffc90004e07c40 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x87c/0x1650
 #2: ffffffff8f9b4df0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xfe/0x7b0
 #3: ffffffff8f9c3d08 (rtnl_mutex){+.+.}-{4:4}, at: ipmr_net_exit_batch+0x20/0x90
4 locks held by kworker/0:4/5836:
 #0: ffff888100069148 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x855/0x1650
 #1: ffffc90004e17c40 ((work_completion)(&(&ssp->srcu_sup->work)->work)){+.+.}-{0:0}, at: process_one_work+0x87c/0x1650
 #2: ffffffff8e560ff8 (&ssp->srcu_sup->srcu_gp_mutex){+.+.}-{4:4}, at: process_srcu+0x6e/0x1220
 #3: ffffffff8e5663b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770
3 locks held by kworker/1:5/7004:
 #0: ffff88810006a148 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x855/0x1650
 #1: ffffc90004717c40 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x87c/0x1650
 #2: ffffffff8f9c3d08 (rtnl_mutex){+.+.}-{4:4}, at: reg_check_chans_work+0xa5/0xfe0
2 locks held by kworker/0:8/11814:
 #0: ffff88810006b548 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x855/0x1650
 #1: ffffc9000ff07c40 ((work_completion)(&(&devlink->rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x87c/0x1650
5 locks held by kworker/u11:3/15719:
 #0: ffff8881057cc148 ((wq_completion)hci2){+.+.}-{0:0}, at: process_one_work+0x855/0x1650
 #1: ffffc90003857c40 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x87c/0x1650
 #2: ffff88801cdd4ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400
 #3: ffff88801cdd40c0 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x8a3/0xed0
 #4: ffffffff8fb505c8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_failed+0x165/0x340
3 locks held by kworker/u10:36/23426:
 #0: ffff8881000ac148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x855/0x1650
 #1: ffffc90003827c40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x87c/0x1650
 #2: ffffffff8f9c3d08 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
7 locks held by syz-executor/24692:
 #0: ffff88811195e420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb90
 #1: ffff88811e45ac88 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1de/0x540
 #2: ffff88816bf6b008 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x231/0x540
 #3: ffffffff8f238da8 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: new_device_store+0x13c/0x710
 #4: ffff88811de760e8 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x450
 #5: ffff88811de71250 (&devlink->lock_key#19){+.+.}-{4:4}, at: nsim_drv_probe+0xc9/0xc20
 #6: ffffffff8f9c3d08 (rtnl_mutex){+.+.}-{4:4}, at: register_nexthop_notifier+0x88/0x290
1 lock held by syz.1.4821/24744:
1 lock held by syz-executor/24758:
 #0: ffffffff8f9c3d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x404/0x1ad0
1 lock held by syz-executor/24762:
 #0: ffffffff8f9c3d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x404/0x1ad0
1 lock held by syz-executor/24765:
 #0: ffffffff8f9c3d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x404/0x1ad0
1 lock held by syz-executor/24771:
 #0: ffffffff8f9c3d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x404/0x1ad0
1 lock held by syz-executor/24772:
 #0: ffffffff8f9c3d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x404/0x1ad0
1 lock held by syz-executor/24780:
 #0: ffffffff8f9c3d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x404/0x1ad0
5 locks held by kworker/u11:0/24783:
 #0: ffff8881043d7148 ((wq_completion)hci3){+.+.}-{0:0}, at: process_one_work+0x855/0x1650
 #1: ffffc900085bfc40 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x87c/0x1650
 #2: ffff88801cdd8ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400
 #3: ffff88801cdd80c0 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x8a3/0xed0
 #4: ffffffff8fb505c8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_failed+0x165/0x340
1 lock held by syz-executor/24786:
 #0: ffffffff8f9c3d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x404/0x1ad0
1 lock held by syz-executor/24787:
 #0: ffffffff8f9c3d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x404/0x1ad0
4 locks held by kworker/u11:2/24788:
 #0: ffff888040c6b948 ((wq_completion)hci9#2){+.+.}-{0:0}, at: process_one_work+0x855/0x1650
 #1: ffffc900082afc40 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x87c/0x1650
 #2: ffff8881118100c0 (&hdev->lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x9b/0x950
 #3: ffffffff8fb505c8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x54c/0x950
5 locks held by kworker/u11:6/24793:
 #0: ffff88801e833148 ((wq_completion)hci5){+.+.}-{0:0}, at: process_one_work+0x855/0x1650
 #1: ffffc90007fafc40 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x87c/0x1650
 #2: ffff8881156b8ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400
 #3: ffff8881156b80c0 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x8a3/0xed0
 #4: ffffffff8fb505c8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_failed+0x165/0x340
4 locks held by kworker/u11:7/24794:
 #0: ffff88801b20e148 ((wq_completion)hci10#2){+.+.}-{0:0}, at: process_one_work+0x855/0x1650
 #1: ffffc90007e57c40 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x87c/0x1650
 #2: ffff88801eae80c0 (&hdev->lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x9b/0x950
 #3: ffffffff8fb505c8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x54c/0x950
4 locks held by kworker/u11:8/24797:
 #0: ffff888040c6e148 ((wq_completion)hci11#2){+.+.}-{0:0}, at: process_one_work+0x855/0x1650
 #1: ffffc9000811fc40 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x87c/0x1650
 #2: ffff888115f440c0 (&hdev->lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x9b/0x950
 #3: ffffffff8fb505c8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_remote_features_evt+0x54c/0x950
1 lock held by syz-executor/24799:
 #0: ffffffff8f9c3d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x404/0x1ad0
3 locks held by kworker/u11:9/24803:
 #0: ffff88803a5ed948 ((wq_completion)hci7){+.+.}-{0:0}, at: process_one_work+0x855/0x1650
 #1: ffffc90007cafc40 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x87c/0x1650
 #2: ffff88810bddcec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 35 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 nmi_cpu_backtrace+0x274/0x2d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 sys_info+0x135/0x170
 watchdog+0x103d/0x1090
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 24744 Comm: syz.1.4821 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:rcu_read_unlock_special+0x1d/0x480
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 41 55 41 54 53 48 83 ec 10 65 8b 2d 8b ad 4d 11 f7 c5 00 00 f0 00 74 14 <48> 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 49 89
RSP: 0018:ffffc90000a08580 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000246 RCX: 0000000000000101
RDX: 0000000000000002 RSI: ffffffff8dcf1fb8 RDI: ffffffff8c076d00
RBP: ffff8882a96a4000 R08: ffffffff8ff0e0b7 R09: 1ffffffff1fe1c16
R10: dffffc0000000000 R11: fffffbfff1fe1c17 R12: ffffffff8e565cb8
R13: dffffc0000000000 R14: ffff88823c63bd98 R15: 1ffff110478c77b3
FS:  00007f0cca4836c0(0000) GS:ffff8882a96a4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f570e945000 CR3: 000000017d2a8000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x83/0xe0
 unwind_next_frame+0x1aaf/0x23c0
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x384/0x690
 __alloc_skb+0x1d0/0x7d0
 ndisc_alloc_skb+0x9f/0x480
 ndisc_send_rs+0x2b5/0x630
 addrconf_rs_timer+0x395/0x6d0
 call_timer_fn+0x192/0x640
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0x48/0xa0
Code: 49 be 00 00 00 00 00 fc ff df eb 09 48 f7 03 10 00 00 00 74 53 bf 01 00 00 00 e8 93 90 03 f6 e8 ae 23 3c f6 fb bf 01 00 00 00 <e8> 23 a9 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 84 25 3c f6 bf 01
RSP: 0018:ffffc90004987ba0 EFLAGS: 00000202
RAX: 00000000005b4851 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8dcf1fb8 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff8ff0e0b7 R09: 1ffffffff1fe1c16
R10: dffffc0000000000 R11: fffffbfff1fe1c17 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 irqentry_exit+0x599/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:uprobe_deny_signal+0x0/0x220
Code: eb 0c e8 83 75 c8 ff 48 c7 c0 ff ff ff ff 5b 41 5e 41 5f e9 12 de 95 09 cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <0f> 1f 40 d6 55 41 57 41 56 41 55 41 54 53 49 bc 00 00 00 00 00 fc
RSP: 0018:ffffc90004987cc8 EFLAGS: 00000202
RAX: ffffffff8189b027 RBX: ffff88816ac2e900 RCX: ffff888173e15700
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90004987ed8 R08: ffff888173e15707 R09: 1ffff1102e7c2ae0
R10: dffffc0000000000 R11: ffffed102e7c2ae1 R12: 00000000ffffe000
R13: 1ffff92000930fbc R14: 0000000000000002 R15: ffff888173e15700
 get_signal+0x12e/0x1330
 arch_do_signal_or_restart+0xbc/0x830
 irqentry_exit+0x176/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0033:0x7f0cc9454ff9
Code: 08 c3 0f 1f 80 00 00 00 00 48 83 ec 08 48 89 f2 48 63 ff 4c 89 d6 41 51 31 c0 4d 89 c1 49 89 c8 4c 89 d9 e8 a9 5c 14 00 5a 59 <48> 83 c4 08 c3 66 90 66 0f ef c0 4c 63 c9 49 89 d0 0f 11 07 0f 11
RSP: 002b:00007f0cca483040 EFLAGS: 00000203
RAX: 0000000000000008 RBX: 00007f0cc9815fa0 RCX: 00007f0cc9608bf7
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000440
RBP: 00007f0cc9608bf7 R08: 0000000000000003 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0cc9816038 R14: 00007f0cc9815fa0 R15: 00007ffc3f363de8
 </TASK>
