INFO: task kworker/u8:0:12 blocked for more than 143 seconds. Not tainted 6.15.0-rc2-syzkaller-gc72692105976 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u8:0 state:D stack:0 pid:12 tgid:12 ppid:2 task_flags:0x4208160 flags:0x00000008 Workqueue: netns cleanup_net Call trace: __switch_to+0x404/0x778 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6860 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:678 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 rfkill_unregister+0xb8/0x208 net/rfkill/core.c:1145 wiphy_unregister+0x1f0/0x9b0 net/wireless/core.c:1136 ieee80211_unregister_hw+0x1b8/0x29c net/mac80211/main.c:1704 mac80211_hwsim_del_radio+0x214/0x3b4 drivers/net/wireless/virtual/mac80211_hwsim.c:5665 hwsim_exit_net+0x49c/0x558 drivers/net/wireless/virtual/mac80211_hwsim.c:6545 ops_exit_list net/core/net_namespace.c:172 [inline] cleanup_net+0x5d0/0x9c0 net/core/net_namespace.c:654 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 INFO: task syz-executor:6490 blocked for more than 143 seconds. Not tainted 6.15.0-rc2-syzkaller-gc72692105976 #0 Blocked by coredump. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6490 tgid:6490 ppid:1 task_flags:0x40014c flags:0x00000004 Call trace: __switch_to+0x404/0x778 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6860 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:678 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 rfkill_unregister+0xb8/0x208 net/rfkill/core.c:1145 hci_unregister_dev+0x308/0x4a8 net/bluetooth/hci_core.c:2695 vhci_release+0x7c/0xd0 drivers/bluetooth/hci_vhci.c:665 __fput+0x340/0x75c fs/file_table.c:465 ____fput+0x20/0x58 fs/file_table.c:493 task_work_run+0x1dc/0x260 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x4e8/0x1998 kernel/exit.c:953 do_group_exit+0x194/0x22c kernel/exit.c:1102 __do_sys_exit_group kernel/exit.c:1113 [inline] __se_sys_exit_group kernel/exit.c:1111 [inline] pid_child_should_wake+0x0/0x1dc kernel/exit.c:1111 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task kworker/0:6:6571 blocked for more than 143 seconds. Not tainted 6.15.0-rc2-syzkaller-gc72692105976 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:6 state:D stack:0 pid:6571 tgid:6571 ppid:2 task_flags:0x4208060 flags:0x00000008 Workqueue: events rfkill_global_led_trigger_worker Call trace: __switch_to+0x404/0x778 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6860 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:678 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 rfkill_global_led_trigger_worker+0x30/0xe4 net/rfkill/core.c:182 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 INFO: task udevd:6626 blocked for more than 143 seconds. Not tainted 6.15.0-rc2-syzkaller-gc72692105976 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:0 pid:6626 tgid:6626 ppid:6104 task_flags:0x400140 flags:0x00000004 Call trace: __switch_to+0x404/0x778 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6860 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:678 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 misc_open+0x68/0x328 drivers/char/misc.c:143 chrdev_open+0x1b0/0x4b0 fs/char_dev.c:414 do_dentry_open+0xb7c/0x1544 fs/open.c:956 vfs_open+0x44/0x2d4 fs/open.c:1086 do_open fs/namei.c:3845 [inline] path_openat+0x2424/0x2c40 fs/namei.c:4004 do_filp_open+0x18c/0x36c fs/namei.c:4031 do_sys_openat2+0x11c/0x1b4 fs/open.c:1429 do_sys_open fs/open.c:1444 [inline] __do_sys_openat fs/open.c:1460 [inline] __se_sys_openat fs/open.c:1455 [inline] __arm64_sys_openat+0x120/0x158 fs/open.c:1455 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz-executor:6695 blocked for more than 143 seconds. Not tainted 6.15.0-rc2-syzkaller-gc72692105976 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6695 tgid:6695 ppid:1 task_flags:0x400140 flags:0x00000001 Call trace: __switch_to+0x404/0x778 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6860 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:678 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 rfkill_fop_open+0x110/0x744 net/rfkill/core.c:1178 misc_open+0x2b8/0x328 drivers/char/misc.c:179 chrdev_open+0x1b0/0x4b0 fs/char_dev.c:414 do_dentry_open+0xb7c/0x1544 fs/open.c:956 vfs_open+0x44/0x2d4 fs/open.c:1086 do_open fs/namei.c:3845 [inline] path_openat+0x2424/0x2c40 fs/namei.c:4004 do_filp_open+0x18c/0x36c fs/namei.c:4031 do_sys_openat2+0x11c/0x1b4 fs/open.c:1429 do_sys_open fs/open.c:1444 [inline] __do_sys_openat fs/open.c:1460 [inline] __se_sys_openat fs/open.c:1455 [inline] __arm64_sys_openat+0x120/0x158 fs/open.c:1455 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz.1.37:6754 blocked for more than 143 seconds. Not tainted 6.15.0-rc2-syzkaller-gc72692105976 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.37 state:D stack:0 pid:6754 tgid:6754 ppid:6494 task_flags:0x400040 flags:0x00000009 Call trace: __switch_to+0x404/0x778 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6860 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:678 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 rfkill_unregister+0xb8/0x208 net/rfkill/core.c:1145 nfc_unregister_device+0x94/0x288 net/nfc/core.c:1167 nci_unregister_device+0x1dc/0x21c net/nfc/nci/core.c:1323 virtual_ncidev_close+0x5c/0xa0 drivers/nfc/virtual_ncidev.c:172 __fput+0x340/0x75c fs/file_table.c:465 ____fput+0x20/0x58 fs/file_table.c:493 task_work_run+0x1dc/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f8 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xb0/0x150 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz.2.38:6763 blocked for more than 143 seconds. Not tainted 6.15.0-rc2-syzkaller-gc72692105976 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.38 state:D stack:0 pid:6763 tgid:6762 ppid:6489 task_flags:0x400040 flags:0x0000000d Call trace: __switch_to+0x404/0x778 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6860 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:678 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 device_lock include/linux/device.h:922 [inline] nfc_dev_down net/nfc/core.c:143 [inline] nfc_rfkill_set_block+0x4c/0x2a8 net/nfc/core.c:179 rfkill_set_block+0x18c/0x374 net/rfkill/core.c:346 rfkill_fop_write+0x4e0/0x628 net/rfkill/core.c:1301 vfs_write+0x2a0/0x97c fs/read_write.c:682 ksys_write+0x120/0x210 fs/read_write.c:736 __do_sys_write fs/read_write.c:747 [inline] __se_sys_write fs/read_write.c:744 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:744 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Showing all locks held in the system: 4 locks held by kworker/u8:0/12: #0: ffff0000c183a148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff800097617bc0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff800092439510 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x138/0x9c0 net/core/net_namespace.c:608 #3: ffff8000927222a8 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xb8/0x208 net/rfkill/core.c:1145 1 lock held by khungtaskd/32: #0: ffff80008f4c7c60 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 2 locks held by pr/ttyAMA0/46: 2 locks held by getty/6243: #0: ffff0000d27a60a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b58e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa0 drivers/tty/n_tty.c:2222 1 lock held by syz-executor/6475: 1 lock held by syz-executor/6490: #0: ffff8000927222a8 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xb8/0x208 net/rfkill/core.c:1145 3 locks held by kworker/0:6/6571: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff8000a0c87bc0 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff8000927222a8 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_global_led_trigger_worker+0x30/0xe4 net/rfkill/core.c:182 1 lock held by udevd/6626: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 2 locks held by syz-executor/6695: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 #1: ffff8000927222a8 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_fop_open+0x110/0x744 net/rfkill/core.c:1178 2 locks held by syz.1.37/6754: #0: ffff0000cc172100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:922 [inline] #0: ffff0000cc172100 (&dev->mutex){....}-{4:4}, at: nfc_unregister_device+0x68/0x288 net/nfc/core.c:1165 #1: ffff8000927222a8 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xb8/0x208 net/rfkill/core.c:1145 2 locks held by syz.2.38/6763: #0: ffff8000927222a8 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_fop_write+0x274/0x628 net/rfkill/core.c:1293 #1: ffff0000cc172100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:922 [inline] #1: ffff0000cc172100 (&dev->mutex){....}-{4:4}, at: nfc_dev_down net/nfc/core.c:143 [inline] #1: ffff0000cc172100 (&dev->mutex){....}-{4:4}, at: nfc_rfkill_set_block+0x4c/0x2a8 net/nfc/core.c:179 1 lock held by syz.4.88/7190: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/7205: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/7206: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/7323: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/7326: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/7332: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/7339: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/7340: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/7342: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/7344: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/7346: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/7349: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/7350: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/7352: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/7354: #0: ffff800090e28d88 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 =============================================