INFO: task kworker/0:0:7 blocked for more than 143 seconds. Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:18640 pid:7 tgid:7 ppid:2 flags:0x00004000 Workqueue: events nfc_urelease_event_work 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 nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa02/0x1770 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 INFO: task kworker/0:1:8 blocked for more than 143 seconds. Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:1 state:D stack:22512 pid:8 tgid:8 ppid:2 flags:0x00004000 Workqueue: events nfc_urelease_event_work 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 nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa02/0x1770 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 INFO: task kworker/1:0:24 blocked for more than 143 seconds. Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0 state:D stack:22352 pid:24 tgid:24 ppid:2 flags:0x00004000 Workqueue: events nfc_urelease_event_work 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 nci_request net/nfc/nci/core.c:149 [inline] nci_stop_poll+0x123/0x480 net/nfc/nci/core.c:873 nfc_stop_poll+0xf4/0x230 net/nfc/core.c:259 nfc_urelease_event_work+0x160/0x300 net/nfc/netlink.c:1852 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa02/0x1770 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 INFO: task kworker/1:1:44 blocked for more than 144 seconds. Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:23984 pid:44 tgid:44 ppid:2 flags:0x00004000 Workqueue: events nfc_urelease_event_work 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 nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa02/0x1770 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 INFO: task kworker/u8:4:60 blocked for more than 144 seconds. Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u8:4 state:D stack:22096 pid:60 tgid:60 ppid:2 flags:0x00004000 Workqueue: nfc2_nci_rx_wq nci_rx_work 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] nfc_targets_found+0x26f/0x590 net/nfc/core.c:778 nci_ntf_packet+0x4431/0x4f40 nci_rx_work+0x14c/0x2b0 net/nfc/nci/core.c:1526 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa02/0x1770 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 INFO: task kworker/0:3:5088 blocked for more than 144 seconds. Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:3 state:D stack:23256 pid:5088 tgid:5088 ppid:2 flags:0x00004000 Workqueue: events nfc_urelease_event_work 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 nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa02/0x1770 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 INFO: task kworker/0:4:5147 blocked for more than 144 seconds. Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:4 state:D stack:23888 pid:5147 tgid:5147 ppid:2 flags:0x00004000 Workqueue: events nfc_urelease_event_work 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 nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa02/0x1770 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 INFO: task kworker/1:3:5148 blocked for more than 145 seconds. Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:3 state:D stack:22928 pid:5148 tgid:5148 ppid:2 flags:0x00004000 Workqueue: events nfc_urelease_event_work 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 nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa02/0x1770 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 INFO: task kworker/0:5:5150 blocked for more than 145 seconds. Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:5 state:D stack:18872 pid:5150 tgid:5150 ppid:2 flags:0x00004000 Workqueue: events nfc_urelease_event_work 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 nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa02/0x1770 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 INFO: task kworker/1:4:5151 blocked for more than 145 seconds. Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:4 state:D stack:27344 pid:5151 tgid:5151 ppid:2 flags:0x00004000 Workqueue: events nfc_urelease_event_work 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 nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa02/0x1770 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings Showing all locks held in the system: 3 locks held by kworker/0:0/7: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc900000c7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900000c7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/0:1/8: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc900000d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900000d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 6 locks held by kworker/1:0/24: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc900001e7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900001e7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 #3: ffff88802b816508 (&genl_data->genl_data_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0x111/0x300 net/nfc/netlink.c:1849 #4: ffff88802b816100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #4: ffff88802b816100 (&dev->mutex){....}-{3:3}, at: nfc_stop_poll+0x3c/0x230 net/nfc/core.c:247 #5: ffff88802c4b9350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_request net/nfc/nci/core.c:149 [inline] #5: ffff88802c4b9350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_stop_poll+0x123/0x480 net/nfc/nci/core.c:873 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 3 locks held by kworker/u8:2/42: #0: ffff8880b953e358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559 #1: ffff8880b9528988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988 #2: ffff8880b9528988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_change+0xfd/0x280 kernel/sched/psi.c:912 3 locks held by kworker/1:1/44: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90000b47d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90000b47d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/u8:4/60: #0: ffff88807fed2948 ((wq_completion)nfc2_nci_rx_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff88807fed2948 ((wq_completion)nfc2_nci_rx_wq){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc900015b7d00 ((work_completion)(&ndev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900015b7d00 ((work_completion)(&ndev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffff88802b816100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #2: ffff88802b816100 (&dev->mutex){....}-{3:3}, at: nfc_targets_found+0x26f/0x590 net/nfc/core.c:778 3 locks held by kworker/1:2/924: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90003fe7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90003fe7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/0:2/1139: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90004907d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90004907d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 2 locks held by getty/4823: #0: ffff88802ad260a0 (&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 3 locks held by kworker/0:3/5088: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc900041b7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900041b7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/0:4/5147: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90004297d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90004297d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/1:3/5148: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90004567d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90004567d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/0:5/5150: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90004587d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90004587d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/1:4/5151: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90004597d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90004597d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/0:6/5152: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc900045a7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900045a7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/1:5/5153: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc900045b7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900045b7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/1:6/5156: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc900045e7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900045e7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/0:7/5169: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc900045f7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900045f7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/0:8/5172: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90004627d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90004627d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/0:9/5202: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc900046c7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900046c7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 1 lock held by syz-executor.5/6180: #0: ffff88802c4b9350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_close_device+0x10a/0x610 net/nfc/nci/core.c:561 3 locks held by kworker/1:7/6232: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc900031ffd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900031ffd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/1:8/6259: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc9000330fd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc9000330fd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/1:9/6260: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc9000328fd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc9000328fd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/1:10/6263: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc9000335fd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc9000335fd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/1:11/6282: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc900032afd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900032afd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/0:10/6283: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc9000349fd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc9000349fd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 1 lock held by udevd/6299: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 3 locks held by kworker/1:12/6324: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90003587d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90003587d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 1 lock held by syz-executor.5/6377: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 3 locks held by kworker/0:11/6396: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc900044a7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900044a7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/1:13/6404: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90004707d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90004707d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/1:14/6433: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90003e77d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90003e77d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/1:15/6459: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc900049e7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc900049e7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/0:12/6469: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90004acfd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90004acfd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/0:13/6472: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90004a87d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90004a87d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 3 locks held by kworker/1:18/6490: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90004cefd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90004cefd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 2 locks held by syz-executor.3/6499: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 #1: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_register_device+0x3c/0x320 net/nfc/core.c:1116 1 lock held by syz-executor.2/6509: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 3 locks held by kworker/1:19/6512: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90004717d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90004717d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 1 lock held by syz-executor.1/6570: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 2 locks held by kworker/0:19/6591: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90009317d00 ((work_completion)(&dev->recv_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90009317d00 ((work_completion)(&dev->recv_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 3 locks held by kworker/1:20/6592: #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] #0: ffff888014c74948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 #1: ffffc90009397d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] #1: ffffc90009397d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 #2: ffffffff8f6ab108 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 2 locks held by kworker/1:21/6606: 1 lock held by syz-executor.4/6630: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor.0/6632: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor.3/6636: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor.2/6638: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor.1/6640: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor.4/6642: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor.0/6644: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor.5/6646: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor.3/6654: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor.2/6656: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor.1/6658: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor.4/6660: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor.0/6662: #0: ffffffff8e905ee8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 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+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/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: 42 Comm: kworker/u8:2 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: bat_events batadv_nc_worker RIP: 0010:trace_lock_release include/trace/events/lock.h:69 [inline] RIP: 0010:lock_release+0xb8/0x9d0 kernel/locking/lockdep.c:5765 Code: 08 0f 83 cd 05 00 00 89 c3 48 89 d8 48 c1 e8 06 48 8d 3c c5 68 3a 87 8f be 08 00 00 00 e8 60 86 86 00 48 0f a3 1d e0 79 15 0e <73> 0d e8 71 a9 09 00 84 c0 0f 84 d4 05 00 00 48 c7 c0 9c 6d 87 8f RSP: 0018:ffffc90000b27a20 EFLAGS: 00000257 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8171c080 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8f873a68 RBP: ffffc90000b27b48 R08: ffffffff8f873a6f R09: 1ffffffff1f0e74d R10: dffffc0000000000 R11: fffffbfff1f0e74e R12: 1ffff92000164f50 R13: ffffffff8b408a1b R14: ffff888059e82d80 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb10afabf40 CR3: 000000000df32000 CR4: 0000000000350ef0 Call Trace: rcu_lock_release include/linux/rcupdate.h:308 [inline] rcu_read_unlock include/linux/rcupdate.h:783 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline] batadv_nc_worker+0x290/0x610 net/batman-adv/network-coding.c:719 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa02/0x1770 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243