INFO: task kworker/0:5:4339 blocked for more than 143 seconds. Not tainted 6.1.112-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:5 state:D stack:0 pid:4339 ppid:2 flags:0x00000008 Workqueue: events rfkill_global_led_trigger_worker Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5241 [inline] __schedule+0xef4/0x1d44 kernel/sched/core.c:6558 schedule+0xc4/0x170 kernel/sched/core.c:6634 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6693 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 rfkill_global_led_trigger_worker+0x30/0xe4 net/rfkill/core.c:181 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2292 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 INFO: task kworker/u4:11:5772 blocked for more than 143 seconds. Not tainted 6.1.112-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:11 state:D stack:0 pid:5772 ppid:2 flags:0x00000008 Workqueue: netns cleanup_net Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5241 [inline] __schedule+0xef4/0x1d44 kernel/sched/core.c:6558 schedule+0xc4/0x170 kernel/sched/core.c:6634 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6693 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 rfkill_unregister+0xb8/0x210 net/rfkill/core.c:1130 wiphy_unregister+0x1e8/0xa58 net/wireless/core.c:1089 ieee80211_unregister_hw+0x194/0x278 net/mac80211/main.c:1497 mac80211_hwsim_del_radio+0x21c/0x3d8 drivers/net/wireless/mac80211_hwsim.c:4683 hwsim_exit_net+0x518/0x5e0 drivers/net/wireless/mac80211_hwsim.c:5470 ops_exit_list net/core/net_namespace.c:172 [inline] cleanup_net+0x564/0x994 net/core/net_namespace.c:604 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2292 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 INFO: task syz-executor:7219 blocked for more than 143 seconds. Not tainted 6.1.112-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:7219 ppid:1 flags:0x00000001 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5241 [inline] __schedule+0xef4/0x1d44 kernel/sched/core.c:6558 schedule+0xc4/0x170 kernel/sched/core.c:6634 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6693 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 rfkill_fop_open+0x12c/0x5c8 net/rfkill/core.c:1163 misc_open+0x2f0/0x368 drivers/char/misc.c:143 chrdev_open+0x3e8/0x4fc fs/char_dev.c:414 do_dentry_open+0x734/0xfa0 fs/open.c:882 vfs_open+0x7c/0x90 fs/open.c:1013 do_open fs/namei.c:3628 [inline] path_openat+0x1e14/0x2548 fs/namei.c:3785 do_filp_open+0x1bc/0x3cc fs/namei.c:3812 do_sys_openat2+0x128/0x3e0 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1345 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 INFO: task syz.4.1056:7223 blocked for more than 143 seconds. Not tainted 6.1.112-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.1056 state:D stack:0 pid:7223 ppid:6869 flags:0x00000009 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5241 [inline] __schedule+0xef4/0x1d44 kernel/sched/core.c:6558 schedule+0xc4/0x170 kernel/sched/core.c:6634 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6693 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 rfkill_unregister+0xb8/0x210 net/rfkill/core.c:1130 nfc_unregister_device+0x98/0x290 net/nfc/core.c:1167 nci_unregister_device+0x1dc/0x21c net/nfc/nci/core.c:1311 virtual_ncidev_close+0x70/0xb0 drivers/nfc/virtual_ncidev.c:170 __fput+0x1c8/0x7c8 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x240/0x2f0 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2148/0x3474 arch/arm64/kernel/signal.c:1132 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 INFO: task syz.0.1099:7231 blocked for more than 143 seconds. Not tainted 6.1.112-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.1099 state:D stack:0 pid:7231 ppid:6877 flags:0x00000809 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5241 [inline] __schedule+0xef4/0x1d44 kernel/sched/core.c:6558 schedule+0xc4/0x170 kernel/sched/core.c:6634 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6693 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 device_lock include/linux/device.h:837 [inline] nfc_dev_down net/nfc/core.c:143 [inline] nfc_rfkill_set_block+0x50/0x2d0 net/nfc/core.c:179 rfkill_set_block+0x18c/0x37c net/rfkill/core.c:345 rfkill_fop_write+0x578/0x734 net/rfkill/core.c:1286 vfs_write+0x2a4/0x91c fs/read_write.c:582 ksys_write+0x15c/0x26c fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:646 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x1fc/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 INFO: task syz.2.1132:7317 blocked for more than 143 seconds. Not tainted 6.1.112-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.1132 state:D stack:0 pid:7317 ppid:6879 flags:0x00000001 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5241 [inline] __schedule+0xef4/0x1d44 kernel/sched/core.c:6558 schedule+0xc4/0x170 kernel/sched/core.c:6634 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6693 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 misc_open+0x6c/0x368 drivers/char/misc.c:107 chrdev_open+0x3e8/0x4fc fs/char_dev.c:414 do_dentry_open+0x734/0xfa0 fs/open.c:882 vfs_open+0x7c/0x90 fs/open.c:1013 do_open fs/namei.c:3628 [inline] path_openat+0x1e14/0x2548 fs/namei.c:3785 do_filp_open+0x1bc/0x3cc fs/namei.c:3812 do_sys_openat2+0x128/0x3e0 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1345 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffff800015ba50f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:517 1 lock held by rcu_tasks_trace/13: #0: ffff800015ba58f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:517 1 lock held by khungtaskd/28: #0: ffff800015ba4f20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:349 2 locks held by getty/4057: #0: ffff0000d61fe098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001efd02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2198 3 locks held by kworker/0:5/4339: #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2265 #1: ffff800021327c20 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2267 #2: ffff800018294568 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_global_led_trigger_worker+0x30/0xe4 net/rfkill/core.c:181 4 locks held by kworker/u4:11/5772: #0: ffff0000c0845138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2265 #1: ffff800022947c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2267 #2: ffff800017fe7150 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf4/0x994 net/core/net_namespace.c:566 #3: ffff800018294568 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xb8/0x210 net/rfkill/core.c:1130 2 locks held by syz-executor/7219: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 #1: ffff800018294568 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_open+0x12c/0x5c8 net/rfkill/core.c:1163 2 locks held by syz.4.1056/7223: #0: ffff0000c3b2f100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline] #0: ffff0000c3b2f100 (&dev->mutex){....}-{3:3}, at: nfc_unregister_device+0x6c/0x290 net/nfc/core.c:1165 #1: ffff800018294568 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xb8/0x210 net/rfkill/core.c:1130 2 locks held by syz.0.1099/7231: #0: ffff800018294568 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x234/0x734 net/rfkill/core.c:1278 #1: ffff0000c3b2f100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline] #1: ffff0000c3b2f100 (&dev->mutex){....}-{3:3}, at: nfc_dev_down net/nfc/core.c:143 [inline] #1: ffff0000c3b2f100 (&dev->mutex){....}-{3:3}, at: nfc_rfkill_set_block+0x50/0x2d0 net/nfc/core.c:179 1 lock held by syz.2.1132/7317: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 1 lock held by syz-executor/7353: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 1 lock held by syz-executor/7356: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 1 lock held by syz.3.1146/7364: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 1 lock held by syz.3.1146/7365: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 1 lock held by syz-executor/7368: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 1 lock held by syz-executor/7370: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 1 lock held by syz-executor/7376: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 1 lock held by syz-executor/7378: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 1 lock held by syz-executor/7380: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 1 lock held by syz-executor/7382: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 1 lock held by syz-executor/7384: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 1 lock held by syz-executor/7386: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 1 lock held by syz-executor/7388: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 1 lock held by syz-executor/7390: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 1 lock held by syz-executor/7392: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 1 lock held by syz-executor/7394: #0: ffff800016dcd1c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x6c/0x368 drivers/char/misc.c:107 =============================================