INFO: task syz-executor.0:18471 blocked for more than 143 seconds. Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:26584 pid:18471 tgid:18471 ppid:5108 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5409 [inline] __schedule+0x17d3/0x4a20 kernel/sched/core.c:6736 __schedule_loop kernel/sched/core.c:6813 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6828 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 device_lock include/linux/device.h:990 [inline] usbdev_release+0x7a/0x7a0 drivers/usb/core/devio.c:1096 __fput+0x429/0x8a0 fs/file_table.c:422 __do_sys_close fs/open.c:1556 [inline] __se_sys_close fs/open.c:1541 [inline] __x64_sys_close+0x7f/0x110 fs/open.c:1541 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f4dc687cc9a RSP: 002b:00007f4dc6acfb10 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f4dc687cc9a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00007f4dc69ad980 R08: 0000001b32320000 R09: 0000000000000491 R10: 000000008136099b R11: 0000000000000293 R12: 0000000000096d38 R13: ffffffffffffffff R14: 00007f4dc6400000 R15: 00000000000969f7 INFO: task syz-executor.4:18478 blocked for more than 143 seconds. Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:27384 pid:18478 tgid:18473 ppid:10102 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5409 [inline] __schedule+0x17d3/0x4a20 kernel/sched/core.c:6736 __schedule_loop kernel/sched/core.c:6813 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6828 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 device_lock include/linux/device.h:990 [inline] usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 chrdev_open+0x5b0/0x630 fs/char_dev.c:414 do_dentry_open+0x907/0x15a0 fs/open.c:955 do_open fs/namei.c:3642 [inline] path_openat+0x2860/0x3240 fs/namei.c:3799 do_filp_open+0x235/0x490 fs/namei.c:3826 do_sys_openat2+0x13e/0x1d0 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1432 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f5f34a7c9a0 RSP: 002b:00007f5f35812c00 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000101a01 RCX: 00007f5f34a7c9a0 RDX: 0000000000101a01 RSI: 00007f5f35812ca0 RDI: 00000000ffffff9c RBP: 00007f5f35812ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 000000000000000b R14: 00007f5f34bac050 R15: 00007f5f34ccfa48 INFO: task syz-executor.3:18475 blocked for more than 144 seconds. Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27384 pid:18475 tgid:18474 ppid:11879 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5409 [inline] __schedule+0x17d3/0x4a20 kernel/sched/core.c:6736 __schedule_loop kernel/sched/core.c:6813 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6828 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 device_lock include/linux/device.h:990 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline] usbdev_ioctl+0x274/0x6100 drivers/usb/core/devio.c:2824 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:904 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:890 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7ff6fdc7dda9 RSP: 002b:00007ff6fe9540c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ff6fddabf80 RCX: 00007ff6fdc7dda9 RDX: 0000000020000000 RSI: 00000000802c550a RDI: 0000000000000003 RBP: 00007ff6fdcca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007ff6fddabf80 R15: 00007ff6fdecfa48 INFO: task syz-executor.1:18481 blocked for more than 144 seconds. Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:27384 pid:18481 tgid:18480 ppid:16419 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5409 [inline] __schedule+0x17d3/0x4a20 kernel/sched/core.c:6736 __schedule_loop kernel/sched/core.c:6813 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6828 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 device_lock include/linux/device.h:990 [inline] usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 chrdev_open+0x5b0/0x630 fs/char_dev.c:414 do_dentry_open+0x907/0x15a0 fs/open.c:955 do_open fs/namei.c:3642 [inline] path_openat+0x2860/0x3240 fs/namei.c:3799 do_filp_open+0x235/0x490 fs/namei.c:3826 do_sys_openat2+0x13e/0x1d0 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1432 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f826747c9a0 RSP: 002b:00007f82667fec00 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000101a01 RCX: 00007f826747c9a0 RDX: 0000000000101a01 RSI: 00007f82667feca0 RDI: 00000000ffffff9c RBP: 00007f82667feca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 000000000000000b R14: 00007f82675abf80 R15: 00007f82676cfa48 INFO: task syz-executor.2:18486 blocked for more than 145 seconds. Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:26960 pid:18486 tgid:18485 ppid:5115 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5409 [inline] __schedule+0x17d3/0x4a20 kernel/sched/core.c:6736 __schedule_loop kernel/sched/core.c:6813 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6828 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 device_lock include/linux/device.h:990 [inline] usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 chrdev_open+0x5b0/0x630 fs/char_dev.c:414 do_dentry_open+0x907/0x15a0 fs/open.c:955 do_open fs/namei.c:3642 [inline] path_openat+0x2860/0x3240 fs/namei.c:3799 do_filp_open+0x235/0x490 fs/namei.c:3826 do_sys_openat2+0x13e/0x1d0 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1432 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f706427c9a0 RSP: 002b:00007f7064f98c00 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000101a01 RCX: 00007f706427c9a0 RDX: 0000000000101a01 RSI: 00007f7064f98ca0 RDI: 00000000ffffff9c RBP: 00007f7064f98ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 000000000000000b R14: 00007f70643abf80 R15: 00007f70644cfa48 Showing all locks held in the system: 1 lock held by khungtaskd/29: #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline] #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline] #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614 5 locks held by kworker/1:2/56: #0: ffff88801c29f548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff88801c29f548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc9000131fd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc9000131fd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #2: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1fe/0x50f0 drivers/usb/core/hub.c:5811 #3: ffff888023d09510 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3169 [inline] #3: ffff888023d09510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5380 [inline] #3: ffff888023d09510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5623 [inline] #3: ffff888023d09510 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5783 [inline] #3: ffff888023d09510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x255f/0x50f0 drivers/usb/core/hub.c:5865 #4: ffff888023c07368 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5381 [inline] #4: ffff888023c07368 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5623 [inline] #4: ffff888023c07368 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5783 [inline] #4: ffff888023c07368 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x259d/0x50f0 drivers/usb/core/hub.c:5865 2 locks held by getty/4830: #0: ffff88802ab0d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201 2 locks held by kworker/u8:3/10855: 1 lock held by syz-executor.0/18471: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x7a/0x7a0 drivers/usb/core/devio.c:1096 1 lock held by syz-executor.4/18478: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.3/18475: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_ioctl+0x274/0x6100 drivers/usb/core/devio.c:2824 1 lock held by syz-executor.1/18481: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.2/18486: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.4/18706: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.2/18710: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.1/18718: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.0/18826: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.3/18831: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.4/18866: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.2/18879: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.1/18889: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.0/18931: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.3/18939: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.4/18972: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.2/18978: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.1/18981: #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #0: ffff8880238fd190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x156/0x780 drivers/usb/core/devio.c:1051 2 locks held by syz-executor.0/18993: #0: ffffffff8f38ce88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8f38ce88 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592 #1: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline] #1: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x39a/0x820 kernel/rcu/tree_exp.h:939 2 locks held by syz-executor.3/18999: #0: ffffffff8f380810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c8/0x7b0 net/core/net_namespace.c:501 #1: ffffffff8f38ce88 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3869 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xfb0/0xff0 kernel/hung_task.c:379 kthread+0x2f0/0x390 kernel/kthread.c:388 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 10855 Comm: kworker/u8:3 Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Workqueue: bat_events batadv_nc_worker RIP: 0010:__preempt_count_add arch/x86/include/asm/preempt.h:79 [inline] RIP: 0010:__local_bh_disable_ip+0xd5/0x220 kernel/softirq.c:317 Code: 9e 00 48 c7 44 24 60 00 00 00 00 9c 8f 44 24 60 42 80 3c 23 00 74 08 4c 89 f7 e8 96 d6 9e 00 48 8d 7c 24 40 4c 8b 74 24 60 fa <65> 44 01 3d 9b 62 aa 7e 65 8b 05 94 62 aa 7e 44 31 f8 a9 00 ff 00 RSP: 0018:ffffc90009e379c0 EFLAGS: 00000046 RAX: 0000000080000000 RBX: 1ffff920013c6f44 RCX: 0000000000000035 RDX: 1ffff11011356071 RSI: 0000000000000201 RDI: ffffc90009e37a00 RBP: ffffc90009e37a98 R08: ffffffff92ce15df R09: 1ffffffff259c2bb R10: dffffc0000000000 R11: fffffbfff259c2bc R12: dffffc0000000000 R13: 1ffff920013c6f3c R14: 0000000000000246 R15: 0000000000000201 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c000fecb70 CR3: 000000000df32000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_lock_bh include/linux/spinlock_api_smp.h:125 [inline] _raw_spin_lock_bh+0x1c/0x50 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] batadv_nc_purge_paths+0xe8/0x3b0 net/batman-adv/network-coding.c:442 batadv_nc_worker+0x328/0x610 net/batman-adv/network-coding.c:720 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f0/0x390 kernel/kthread.c:388 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243