INFO: task kworker/1:5:5188 blocked for more than 143 seconds. Not tainted 6.10.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:5 state:D stack:23096 pid:5188 tgid:5188 ppid:2 flags:0x00004000 Workqueue: events rfkill_global_led_trigger_worker Call Trace: context_switch kernel/sched/core.c:5407 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6748 __schedule_loop kernel/sched/core.c:6825 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6840 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6897 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rfkill_global_led_trigger_worker+0x27/0xd0 net/rfkill/core.c:182 process_one_work kernel/workqueue.c:3248 [inline] process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3329 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INFO: task kworker/1:9:6294 blocked for more than 143 seconds. Not tainted 6.10.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:9 state:D stack:21104 pid:6294 tgid:6294 ppid:2 flags:0x00004000 Workqueue: events rfkill_op_handler Call Trace: context_switch kernel/sched/core.c:5407 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6748 __schedule_loop kernel/sched/core.c:6825 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6840 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6897 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 device_lock include/linux/device.h:1009 [inline] nfc_dev_down net/nfc/core.c:143 [inline] nfc_rfkill_set_block+0x50/0x310 net/nfc/core.c:179 rfkill_set_block+0x1f3/0x440 net/rfkill/core.c:346 rfkill_epo+0x84/0x180 net/rfkill/core.c:466 __rfkill_handle_global_op net/rfkill/input.c:60 [inline] rfkill_op_handler+0x121/0x280 net/rfkill/input.c:108 process_one_work kernel/workqueue.c:3248 [inline] process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3329 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INFO: task kworker/u8:19:6395 blocked for more than 143 seconds. Not tainted 6.10.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u8:19 state:D stack:22944 pid:6395 tgid:6395 ppid:2 flags:0x00004000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:5407 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6748 __schedule_loop kernel/sched/core.c:6825 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6840 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6897 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rfkill_unregister+0xd0/0x230 net/rfkill/core.c:1149 wiphy_unregister+0x22a/0xaa0 net/wireless/core.c:1094 ieee80211_unregister_hw+0x1e2/0x2c0 net/mac80211/main.c:1682 mac80211_hwsim_del_radio+0x2c2/0x4c0 drivers/net/wireless/virtual/mac80211_hwsim.c:5576 hwsim_exit_net+0x5c1/0x670 drivers/net/wireless/virtual/mac80211_hwsim.c:6453 ops_exit_list net/core/net_namespace.c:173 [inline] cleanup_net+0x804/0xcc0 net/core/net_namespace.c:640 process_one_work kernel/workqueue.c:3248 [inline] process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3329 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INFO: task syz-executor:7596 blocked for more than 144 seconds. Not tainted 6.10.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:19824 pid:7596 tgid:7596 ppid:1 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5407 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6748 __schedule_loop kernel/sched/core.c:6825 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6840 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6897 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rfkill_unregister+0xd0/0x230 net/rfkill/core.c:1149 hci_unregister_dev+0x366/0x510 net/bluetooth/hci_core.c:2745 vhci_release+0x83/0xd0 drivers/bluetooth/hci_vhci.c:666 __fput+0x24c/0x8a0 fs/file_table.c:422 task_work_run+0x251/0x310 kernel/task_work.c:180 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa27/0x27e0 kernel/exit.c:876 do_group_exit+0x207/0x2c0 kernel/exit.c:1025 __do_sys_exit_group kernel/exit.c:1036 [inline] __se_sys_exit_group kernel/exit.c:1034 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1034 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8799775bd9 RSP: 002b:00007ffdb56b3ff8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f87997e3587 RCX: 00007f8799775bd9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000016 R08: 00007ffdb56b1d96 R09: 00007ffdb56b52b0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdb56b52b0 R13: 00007f87997e3515 R14: 000055555bba64a8 R15: 0000000000051a59 INFO: task syz.0.403:7859 blocked for more than 144 seconds. Not tainted 6.10.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.403 state:D stack:24672 pid:7859 tgid:7859 ppid:7459 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5407 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6748 __schedule_loop kernel/sched/core.c:6825 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6840 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6897 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rfkill_unregister+0xd0/0x230 net/rfkill/core.c:1149 nfc_unregister_device+0x96/0x2a0 net/nfc/core.c:1167 virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:172 __fput+0x24c/0x8a0 fs/file_table.c:422 task_work_run+0x251/0x310 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x168/0x360 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7efe39b75bd9 RSP: 002b:00007ffca5860848 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007efe39d05a60 RCX: 00007efe39b75bd9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007efe39d05a60 R08: 0000000000000006 R09: 0000001ca5860b6f R10: 00000000005ea2f8 R11: 0000000000000246 R12: 000000000004f080 R13: 0000000000000032 R14: 00007efe39d05a60 R15: 00007efe39d04038 INFO: task syz-executor:7882 blocked for more than 144 seconds. Not tainted 6.10.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:26784 pid:7882 tgid:7882 ppid:1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5407 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6748 __schedule_loop kernel/sched/core.c:6825 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6840 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6897 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rfkill_register+0x34/0x8c0 net/rfkill/core.c:1075 hci_register_dev+0x407/0x8b0 net/bluetooth/hci_core.c:2647 __vhci_create_device drivers/bluetooth/hci_vhci.c:430 [inline] vhci_create_device+0x389/0x6d0 drivers/bluetooth/hci_vhci.c:472 vhci_get_user drivers/bluetooth/hci_vhci.c:529 [inline] vhci_write+0x3cb/0x480 drivers/bluetooth/hci_vhci.c:609 new_sync_write fs/read_write.c:497 [inline] vfs_write+0xa74/0xc90 fs/read_write.c:590 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2133f74720 RSP: 002b:00007ffe2565e5c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f2133f74720 RDX: 0000000000000002 RSI: 00007ffe2565e5da RDI: 00000000000000ca RBP: 00007f2134104a18 R08: 0000000000000000 R09: 00007f2134c3d6c0 R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000c R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000009 INFO: task syz-executor:8013 blocked for more than 144 seconds. Not tainted 6.10.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:26784 pid:8013 tgid:8013 ppid:1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5407 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6748 __schedule_loop kernel/sched/core.c:6825 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6840 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6897 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rfkill_register+0x34/0x8c0 net/rfkill/core.c:1075 hci_register_dev+0x407/0x8b0 net/bluetooth/hci_core.c:2647 __vhci_create_device drivers/bluetooth/hci_vhci.c:430 [inline] vhci_create_device+0x389/0x6d0 drivers/bluetooth/hci_vhci.c:472 vhci_get_user drivers/bluetooth/hci_vhci.c:529 [inline] vhci_write+0x3cb/0x480 drivers/bluetooth/hci_vhci.c:609 new_sync_write fs/read_write.c:497 [inline] vfs_write+0xa74/0xc90 fs/read_write.c:590 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7efdc6174720 RSP: 002b:00007fff423a6348 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007efdc6174720 RDX: 0000000000000002 RSI: 00007fff423a635a RDI: 00000000000000ca RBP: 00007efdc6304a18 R08: 0000000000000000 R09: 00007efdc6e3d6c0 R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000c R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000009 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #0: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #0: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614 2 locks held by getty/4850: #0: ffff88802a9310a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc9000312b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211 3 locks held by kworker/1:5/5188: #0: ffff888015078948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] #0: ffff888015078948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc90002f47d00 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc90002f47d00 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffffffff8f8bf068 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_global_led_trigger_worker+0x27/0xd0 net/rfkill/core.c:182 4 locks held by kworker/1:9/6294: #0: ffff888015078948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] #0: ffff888015078948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc90002ee7d00 ((rfkill_op_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc90002ee7d00 ((rfkill_op_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffffffff8f8bf068 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_epo+0x4f/0x180 net/rfkill/core.c:462 #3: ffff88802b9dd100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] #3: ffff88802b9dd100 (&dev->mutex){....}-{3:3}, at: nfc_dev_down net/nfc/core.c:143 [inline] #3: ffff88802b9dd100 (&dev->mutex){....}-{3:3}, at: nfc_rfkill_set_block+0x50/0x310 net/nfc/core.c:179 7 locks held by kworker/u8:9/6365: #0: ffff888015081148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] #0: ffff888015081148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc9000410fd00 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc9000410fd00 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffffffff8e1ce5b0 (cpu_hotplug_lock){++++}-{0:0}, at: static_key_disable+0x12/0x20 kernel/jump_label.c:242 #3: ffffffff8e3e1908 (jump_label_mutex){+.+.}-{3:3}, at: jump_label_lock kernel/jump_label.c:27 [inline] #3: ffffffff8e3e1908 (jump_label_mutex){+.+.}-{3:3}, at: static_key_disable_cpuslocked+0x9b/0x1c0 kernel/jump_label.c:233 #4: ffffffff8e1e3688 (text_mutex){+.+.}-{3:3}, at: arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:145 #5: ffff8880b943e798 (&rq->__lock){-.-.}-{2:2}, at: finish_lock_switch kernel/sched/core.c:5159 [inline] #5: ffff8880b943e798 (&rq->__lock){-.-.}-{2:2}, at: finish_task_switch+0x1b2/0x870 kernel/sched/core.c:5279 #6: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #6: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #6: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: __queue_work+0x198/0xee0 kernel/workqueue.c:2284 4 locks held by kworker/u8:19/6395: #0: ffff888015ed5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] #0: ffff888015ed5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc9000428fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc9000428fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffffffff8f5ddfd0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594 #3: ffffffff8f8bf068 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xd0/0x230 net/rfkill/core.c:1149 1 lock held by syz-executor/7526: #0: ffffffff8f8bf068 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xd0/0x230 net/rfkill/core.c:1149 1 lock held by syz-executor/7596: #0: ffffffff8f8bf068 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xd0/0x230 net/rfkill/core.c:1149 2 locks held by syz-executor/7786: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 #1: ffffffff8f8bf068 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_open+0x131/0x850 net/rfkill/core.c:1182 2 locks held by syz.0.403/7859: #0: ffff88802b9dd100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] #0: ffff88802b9dd100 (&dev->mutex){....}-{3:3}, at: nfc_unregister_device+0x63/0x2a0 net/nfc/core.c:1165 #1: ffffffff8f8bf068 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xd0/0x230 net/rfkill/core.c:1149 2 locks held by syz-executor/7882: #0: ffff88807a594118 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x34/0x6d0 drivers/bluetooth/hci_vhci.c:471 #1: ffffffff8f8bf068 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x34/0x8c0 net/rfkill/core.c:1075 2 locks held by syz-executor/8013: #0: ffff88805dd3a918 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x34/0x6d0 drivers/bluetooth/hci_vhci.c:471 #1: ffffffff8f8bf068 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x34/0x8c0 net/rfkill/core.c:1075 1 lock held by syz.1.438/8092: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor/8197: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor/8314: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor/8316: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor/8442: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor/8448: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor/8450: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor/8452: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor/8458: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor/8460: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor/8462: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor/8464: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor/8466: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor/8468: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor/8470: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 1 lock held by syz-executor/8472: #0: ffffffff8eb32fe8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 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:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0xfde/0x1020 kernel/hung_task.c:379 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 6365 Comm: kworker/u8:9 Not tainted 6.10.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:__text_poke+0x2ca/0xd30 arch/x86/kernel/alternative.c:1888 Code: 5c 24 68 4c 8b 2d 76 77 78 0e 48 8b 3d 17 68 a6 0c 48 8b 35 18 68 a6 0c 48 8d 94 24 60 01 00 00 e8 db 3e ad 00 48 89 44 24 18 <48> 85 c0 0f 84 e2 09 00 00 4c 8d b4 24 40 01 00 00 4c 89 f3 48 c1 RSP: 0018:ffffc9000410f740 EFLAGS: 00000246 RAX: ffff88801506f558 RBX: 0000000000000000 RCX: b1763d0695e85a00 RDX: 0000000000000000 RSI: 000000001506f067 RDI: 000000001506f067 RBP: ffffc9000410f910 R08: ffffffff81ea40e8 R09: fffff52000821eb8 R10: dffffc0000000000 R11: fffff52000821eb8 R12: ffffea000007c180 R13: ffffffffffffffff R14: 00fff00000002000 R15: ffffffff81f068df FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055cc2ac43220 CR3: 000000000e132000 CR4: 0000000000350ef0 Call Trace: text_poke arch/x86/kernel/alternative.c:1968 [inline] text_poke_bp_batch+0x8cd/0xb30 arch/x86/kernel/alternative.c:2357 text_poke_flush arch/x86/kernel/alternative.c:2470 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2477 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:205 static_key_enable+0x1a/0x20 kernel/jump_label.c:218 toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:826 process_one_work kernel/workqueue.c:3248 [inline] process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3329 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244