INFO: task kworker/1:0:20 blocked for more than 143 seconds. Not tainted 5.17.0-rc5-syzkaller-00306-g2293be58d6a1 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0 state:D stack:21008 pid: 20 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4995 [inline] __schedule+0x926/0x1080 kernel/sched/core.c:6304 schedule+0x12b/0x1f0 kernel/sched/core.c:6377 schedule_timeout+0xac/0x300 kernel/time/timer.c:1857 do_wait_for_common+0x2da/0x480 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x46/0x60 kernel/sched/completion.c:138 port100_send_cmd_sync drivers/nfc/port100.c:926 [inline] port100_get_command_type_mask drivers/nfc/port100.c:1011 [inline] port100_probe+0xb2e/0x1640 drivers/nfc/port100.c:1557 usb_probe_interface+0x633/0xb40 drivers/usb/core/driver.c:396 call_driver_probe+0x96/0x250 really_probe+0x222/0x9f0 drivers/base/dd.c:596 __driver_probe_device+0x1f8/0x3e0 drivers/base/dd.c:755 driver_probe_device+0x50/0x240 drivers/base/dd.c:785 __device_attach_driver+0x1e1/0x3b0 drivers/base/dd.c:902 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427 __device_attach+0x310/0x560 drivers/base/dd.c:973 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487 device_add+0x11c8/0x16d0 drivers/base/core.c:3405 usb_set_configuration+0x1a86/0x2100 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x83/0x140 drivers/usb/core/generic.c:238 usb_probe_device+0x13a/0x260 drivers/usb/core/driver.c:293 call_driver_probe+0x96/0x250 really_probe+0x222/0x9f0 drivers/base/dd.c:596 __driver_probe_device+0x1f8/0x3e0 drivers/base/dd.c:755 driver_probe_device+0x50/0x240 drivers/base/dd.c:785 __device_attach_driver+0x1e1/0x3b0 drivers/base/dd.c:902 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427 __device_attach+0x310/0x560 drivers/base/dd.c:973 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487 device_add+0x11c8/0x16d0 drivers/base/core.c:3405 usb_new_device+0x108a/0x1940 drivers/usb/core/hub.c:2566 hub_port_connect+0x100b/0x2910 drivers/usb/core/hub.c:5358 hub_port_connect_change+0x5f9/0xc20 drivers/usb/core/hub.c:5502 port_event+0xca0/0x13e0 drivers/usb/core/hub.c:5660 hub_event+0x4ed/0xe40 drivers/usb/core/hub.c:5742 process_one_work+0x86c/0x1190 kernel/workqueue.c:2307 process_scheduled_works kernel/workqueue.c:2370 [inline] worker_thread+0xe18/0x1300 kernel/workqueue.c:2456 kthread+0x2a3/0x2d0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 INFO: task kworker/0:2:142 blocked for more than 143 seconds. Not tainted 5.17.0-rc5-syzkaller-00306-g2293be58d6a1 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:2 state:D stack:20376 pid: 142 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4995 [inline] __schedule+0x926/0x1080 kernel/sched/core.c:6304 schedule+0x12b/0x1f0 kernel/sched/core.c:6377 schedule_timeout+0xac/0x300 kernel/time/timer.c:1857 do_wait_for_common+0x2da/0x480 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x46/0x60 kernel/sched/completion.c:138 port100_send_cmd_sync drivers/nfc/port100.c:926 [inline] port100_get_command_type_mask drivers/nfc/port100.c:1011 [inline] port100_probe+0xb2e/0x1640 drivers/nfc/port100.c:1557 usb_probe_interface+0x633/0xb40 drivers/usb/core/driver.c:396 call_driver_probe+0x96/0x250 really_probe+0x222/0x9f0 drivers/base/dd.c:596 __driver_probe_device+0x1f8/0x3e0 drivers/base/dd.c:755 driver_probe_device+0x50/0x240 drivers/base/dd.c:785 __device_attach_driver+0x1e1/0x3b0 drivers/base/dd.c:902 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427 __device_attach+0x310/0x560 drivers/base/dd.c:973 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487 device_add+0x11c8/0x16d0 drivers/base/core.c:3405 usb_set_configuration+0x1a86/0x2100 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x83/0x140 drivers/usb/core/generic.c:238 usb_probe_device+0x13a/0x260 drivers/usb/core/driver.c:293 call_driver_probe+0x96/0x250 really_probe+0x222/0x9f0 drivers/base/dd.c:596 __driver_probe_device+0x1f8/0x3e0 drivers/base/dd.c:755 driver_probe_device+0x50/0x240 drivers/base/dd.c:785 __device_attach_driver+0x1e1/0x3b0 drivers/base/dd.c:902 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427 __device_attach+0x310/0x560 drivers/base/dd.c:973 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487 device_add+0x11c8/0x16d0 drivers/base/core.c:3405 usb_new_device+0x108a/0x1940 drivers/usb/core/hub.c:2566 hub_port_connect+0x100b/0x2910 drivers/usb/core/hub.c:5358 hub_port_connect_change+0x5f9/0xc20 drivers/usb/core/hub.c:5502 port_event+0xca0/0x13e0 drivers/usb/core/hub.c:5660 hub_event+0x4ed/0xe40 drivers/usb/core/hub.c:5742 process_one_work+0x86c/0x1190 kernel/workqueue.c:2307 process_scheduled_works kernel/workqueue.c:2370 [inline] worker_thread+0xe18/0x1300 kernel/workqueue.c:2456 kthread+0x2a3/0x2d0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 INFO: task kworker/1:1:3638 blocked for more than 144 seconds. Not tainted 5.17.0-rc5-syzkaller-00306-g2293be58d6a1 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:22152 pid: 3638 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4995 [inline] __schedule+0x926/0x1080 kernel/sched/core.c:6304 schedule+0x12b/0x1f0 kernel/sched/core.c:6377 schedule_timeout+0xac/0x300 kernel/time/timer.c:1857 do_wait_for_common+0x2da/0x480 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x46/0x60 kernel/sched/completion.c:138 port100_send_cmd_sync drivers/nfc/port100.c:926 [inline] port100_get_command_type_mask drivers/nfc/port100.c:1011 [inline] port100_probe+0xb2e/0x1640 drivers/nfc/port100.c:1557 usb_probe_interface+0x633/0xb40 drivers/usb/core/driver.c:396 call_driver_probe+0x96/0x250 really_probe+0x222/0x9f0 drivers/base/dd.c:596 __driver_probe_device+0x1f8/0x3e0 drivers/base/dd.c:755 driver_probe_device+0x50/0x240 drivers/base/dd.c:785 __device_attach_driver+0x1e1/0x3b0 drivers/base/dd.c:902 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427 __device_attach+0x310/0x560 drivers/base/dd.c:973 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487 device_add+0x11c8/0x16d0 drivers/base/core.c:3405 usb_set_configuration+0x1a86/0x2100 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x83/0x140 drivers/usb/core/generic.c:238 usb_probe_device+0x13a/0x260 drivers/usb/core/driver.c:293 call_driver_probe+0x96/0x250 really_probe+0x222/0x9f0 drivers/base/dd.c:596 __driver_probe_device+0x1f8/0x3e0 drivers/base/dd.c:755 driver_probe_device+0x50/0x240 drivers/base/dd.c:785 __device_attach_driver+0x1e1/0x3b0 drivers/base/dd.c:902 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427 __device_attach+0x310/0x560 drivers/base/dd.c:973 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487 device_add+0x11c8/0x16d0 drivers/base/core.c:3405 usb_new_device+0x108a/0x1940 drivers/usb/core/hub.c:2566 hub_port_connect+0x100b/0x2910 drivers/usb/core/hub.c:5358 hub_port_connect_change+0x5f9/0xc20 drivers/usb/core/hub.c:5502 port_event+0xca0/0x13e0 drivers/usb/core/hub.c:5660 hub_event+0x4ed/0xe40 drivers/usb/core/hub.c:5742 process_one_work+0x86c/0x1190 kernel/workqueue.c:2307 process_scheduled_works kernel/workqueue.c:2370 [inline] worker_thread+0xe18/0x1300 kernel/workqueue.c:2456 kthread+0x2a3/0x2d0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 INFO: task kworker/1:3:3641 blocked for more than 145 seconds. Not tainted 5.17.0-rc5-syzkaller-00306-g2293be58d6a1 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:3 state:D stack:20952 pid: 3641 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4995 [inline] __schedule+0x926/0x1080 kernel/sched/core.c:6304 schedule+0x12b/0x1f0 kernel/sched/core.c:6377 schedule_timeout+0xac/0x300 kernel/time/timer.c:1857 do_wait_for_common+0x2da/0x480 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x46/0x60 kernel/sched/completion.c:138 port100_send_cmd_sync drivers/nfc/port100.c:926 [inline] port100_get_command_type_mask drivers/nfc/port100.c:1011 [inline] port100_probe+0xb2e/0x1640 drivers/nfc/port100.c:1557 usb_probe_interface+0x633/0xb40 drivers/usb/core/driver.c:396 call_driver_probe+0x96/0x250 really_probe+0x222/0x9f0 drivers/base/dd.c:596 __driver_probe_device+0x1f8/0x3e0 drivers/base/dd.c:755 driver_probe_device+0x50/0x240 drivers/base/dd.c:785 __device_attach_driver+0x1e1/0x3b0 drivers/base/dd.c:902 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427 __device_attach+0x310/0x560 drivers/base/dd.c:973 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487 device_add+0x11c8/0x16d0 drivers/base/core.c:3405 usb_set_configuration+0x1a86/0x2100 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x83/0x140 drivers/usb/core/generic.c:238 usb_probe_device+0x13a/0x260 drivers/usb/core/driver.c:293 call_driver_probe+0x96/0x250 really_probe+0x222/0x9f0 drivers/base/dd.c:596 __driver_probe_device+0x1f8/0x3e0 drivers/base/dd.c:755 driver_probe_device+0x50/0x240 drivers/base/dd.c:785 __device_attach_driver+0x1e1/0x3b0 drivers/base/dd.c:902 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427 __device_attach+0x310/0x560 drivers/base/dd.c:973 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487 device_add+0x11c8/0x16d0 drivers/base/core.c:3405 usb_new_device+0x108a/0x1940 drivers/usb/core/hub.c:2566 hub_port_connect+0x100b/0x2910 drivers/usb/core/hub.c:5358 hub_port_connect_change+0x5f9/0xc20 drivers/usb/core/hub.c:5502 port_event+0xca0/0x13e0 drivers/usb/core/hub.c:5660 hub_event+0x4ed/0xe40 drivers/usb/core/hub.c:5742 process_one_work+0x86c/0x1190 kernel/workqueue.c:2307 process_scheduled_works kernel/workqueue.c:2370 [inline] worker_thread+0xe18/0x1300 kernel/workqueue.c:2456 kthread+0x2a3/0x2d0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 INFO: task kworker/1:4:3643 blocked for more than 145 seconds. Not tainted 5.17.0-rc5-syzkaller-00306-g2293be58d6a1 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:4 state:D stack:20688 pid: 3643 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4995 [inline] __schedule+0x926/0x1080 kernel/sched/core.c:6304 schedule+0x12b/0x1f0 kernel/sched/core.c:6377 schedule_timeout+0xac/0x300 kernel/time/timer.c:1857 do_wait_for_common+0x2da/0x480 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x46/0x60 kernel/sched/completion.c:138 port100_send_cmd_sync drivers/nfc/port100.c:926 [inline] port100_get_command_type_mask drivers/nfc/port100.c:1011 [inline] port100_probe+0xb2e/0x1640 drivers/nfc/port100.c:1557 usb_probe_interface+0x633/0xb40 drivers/usb/core/driver.c:396 call_driver_probe+0x96/0x250 really_probe+0x222/0x9f0 drivers/base/dd.c:596 __driver_probe_device+0x1f8/0x3e0 drivers/base/dd.c:755 driver_probe_device+0x50/0x240 drivers/base/dd.c:785 __device_attach_driver+0x1e1/0x3b0 drivers/base/dd.c:902 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427 __device_attach+0x310/0x560 drivers/base/dd.c:973 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487 device_add+0x11c8/0x16d0 drivers/base/core.c:3405 usb_set_configuration+0x1a86/0x2100 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x83/0x140 drivers/usb/core/generic.c:238 usb_probe_device+0x13a/0x260 drivers/usb/core/driver.c:293 call_driver_probe+0x96/0x250 really_probe+0x222/0x9f0 drivers/base/dd.c:596 __driver_probe_device+0x1f8/0x3e0 drivers/base/dd.c:755 driver_probe_device+0x50/0x240 drivers/base/dd.c:785 __device_attach_driver+0x1e1/0x3b0 drivers/base/dd.c:902 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427 __device_attach+0x310/0x560 drivers/base/dd.c:973 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487 device_add+0x11c8/0x16d0 drivers/base/core.c:3405 usb_new_device+0x108a/0x1940 drivers/usb/core/hub.c:2566 hub_port_connect+0x100b/0x2910 drivers/usb/core/hub.c:5358 hub_port_connect_change+0x5f9/0xc20 drivers/usb/core/hub.c:5502 port_event+0xca0/0x13e0 drivers/usb/core/hub.c:5660 hub_event+0x4ed/0xe40 drivers/usb/core/hub.c:5742 process_one_work+0x86c/0x1190 kernel/workqueue.c:2307 process_scheduled_works kernel/workqueue.c:2370 [inline] worker_thread+0xe18/0x1300 kernel/workqueue.c:2456 kthread+0x2a3/0x2d0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 INFO: task syz-executor275:3663 blocked for more than 146 seconds. Not tainted 5.17.0-rc5-syzkaller-00306-g2293be58d6a1 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor275 state:D stack:26576 pid: 3663 ppid: 3627 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4995 [inline] __schedule+0x926/0x1080 kernel/sched/core.c:6304 schedule+0x12b/0x1f0 kernel/sched/core.c:6377 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6436 __mutex_lock_common+0xd1f/0x2590 kernel/locking/mutex.c:673 __mutex_lock kernel/locking/mutex.c:733 [inline] mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:785 misc_open+0x57/0x3c0 drivers/char/misc.c:107 chrdev_open+0x5fb/0x680 fs/char_dev.c:414 do_dentry_open+0x78b/0x1020 fs/open.c:824 do_open fs/namei.c:3476 [inline] path_openat+0x273b/0x36a0 fs/namei.c:3609 do_filp_open+0x277/0x4f0 fs/namei.c:3636 do_sys_openat2+0x13b/0x500 fs/open.c:1214 do_sys_open fs/open.c:1230 [inline] __do_sys_openat fs/open.c:1246 [inline] __se_sys_openat fs/open.c:1241 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1241 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f3e041ffc97 RSP: 002b:00007fff87cc4780 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00000000200000c0 RCX: 00007f3e041ffc97 RDX: 0000000000000002 RSI: 00007f3e0428503b RDI: 00000000ffffff9c RBP: 00007f3e0428503b R08: 00007fff87cc4868 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fff87cc68dc R14: 0000000000000036 R15: 00007fff87cc68e0 INFO: task syz-executor275:3664 blocked for more than 146 seconds. Not tainted 5.17.0-rc5-syzkaller-00306-g2293be58d6a1 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor275 state:D stack:26128 pid: 3664 ppid: 3631 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4995 [inline] __schedule+0x926/0x1080 kernel/sched/core.c:6304 schedule+0x12b/0x1f0 kernel/sched/core.c:6377 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6436 __mutex_lock_common+0xd1f/0x2590 kernel/locking/mutex.c:673 __mutex_lock kernel/locking/mutex.c:733 [inline] mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:785 misc_open+0x57/0x3c0 drivers/char/misc.c:107 chrdev_open+0x5fb/0x680 fs/char_dev.c:414 do_dentry_open+0x78b/0x1020 fs/open.c:824 do_open fs/namei.c:3476 [inline] path_openat+0x273b/0x36a0 fs/namei.c:3609 do_filp_open+0x277/0x4f0 fs/namei.c:3636 do_sys_openat2+0x13b/0x500 fs/open.c:1214 do_sys_open fs/open.c:1230 [inline] __do_sys_openat fs/open.c:1246 [inline] __se_sys_openat fs/open.c:1241 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1241 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f3e041ffc97 RSP: 002b:00007fff87cc4780 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00000000200000c0 RCX: 00007f3e041ffc97 RDX: 0000000000000002 RSI: 00007f3e0428503b RDI: 00000000ffffff9c RBP: 00007f3e0428503b R08: 00007fff87cc4868 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fff87cc68dc R14: 0000000000000036 R15: 00007fff87cc68e0 INFO: task syz-executor275:3665 blocked for more than 146 seconds. Not tainted 5.17.0-rc5-syzkaller-00306-g2293be58d6a1 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor275 state:D stack:26768 pid: 3665 ppid: 3630 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4995 [inline] __schedule+0x926/0x1080 kernel/sched/core.c:6304 schedule+0x12b/0x1f0 kernel/sched/core.c:6377 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6436 __mutex_lock_common+0xd1f/0x2590 kernel/locking/mutex.c:673 __mutex_lock kernel/locking/mutex.c:733 [inline] mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:785 misc_open+0x57/0x3c0 drivers/char/misc.c:107 chrdev_open+0x5fb/0x680 fs/char_dev.c:414 do_dentry_open+0x78b/0x1020 fs/open.c:824 do_open fs/namei.c:3476 [inline] path_openat+0x273b/0x36a0 fs/namei.c:3609 do_filp_open+0x277/0x4f0 fs/namei.c:3636 do_sys_openat2+0x13b/0x500 fs/open.c:1214 do_sys_open fs/open.c:1230 [inline] __do_sys_openat fs/open.c:1246 [inline] __se_sys_openat fs/open.c:1241 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1241 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f3e041ffc97 RSP: 002b:00007fff87cc4780 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00000000200000c0 RCX: 00007f3e041ffc97 RDX: 0000000000000002 RSI: 00007f3e0428503b RDI: 00000000ffffff9c RBP: 00007f3e0428503b R08: 00007fff87cc4868 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fff87cc68dc R14: 0000000000000036 R15: 00007fff87cc68e0 INFO: task syz-executor275:3666 blocked for more than 146 seconds. Not tainted 5.17.0-rc5-syzkaller-00306-g2293be58d6a1 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor275 state:D stack:26224 pid: 3666 ppid: 3632 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4995 [inline] __schedule+0x926/0x1080 kernel/sched/core.c:6304 schedule+0x12b/0x1f0 kernel/sched/core.c:6377 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6436 __mutex_lock_common+0xd1f/0x2590 kernel/locking/mutex.c:673 __mutex_lock kernel/locking/mutex.c:733 [inline] mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:785 misc_open+0x57/0x3c0 drivers/char/misc.c:107 chrdev_open+0x5fb/0x680 fs/char_dev.c:414 do_dentry_open+0x78b/0x1020 fs/open.c:824 do_open fs/namei.c:3476 [inline] path_openat+0x273b/0x36a0 fs/namei.c:3609 do_filp_open+0x277/0x4f0 fs/namei.c:3636 do_sys_openat2+0x13b/0x500 fs/open.c:1214 do_sys_open fs/open.c:1230 [inline] __do_sys_openat fs/open.c:1246 [inline] __se_sys_openat fs/open.c:1241 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1241 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f3e041ffc97 RSP: 002b:00007fff87cc4780 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00000000200000c0 RCX: 00007f3e041ffc97 RDX: 0000000000000002 RSI: 00007f3e0428503b RDI: 00000000ffffff9c RBP: 00007f3e0428503b R08: 00007fff87cc4868 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fff87cc68dc R14: 0000000000000036 R15: 00007fff87cc68e0 INFO: task syz-executor275:3667 blocked for more than 147 seconds. Not tainted 5.17.0-rc5-syzkaller-00306-g2293be58d6a1 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor275 state:D stack:25168 pid: 3667 ppid: 3626 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4995 [inline] __schedule+0x926/0x1080 kernel/sched/core.c:6304 schedule+0x12b/0x1f0 kernel/sched/core.c:6377 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6436 __mutex_lock_common+0xd1f/0x2590 kernel/locking/mutex.c:673 __mutex_lock kernel/locking/mutex.c:733 [inline] mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:785 misc_open+0x57/0x3c0 drivers/char/misc.c:107 chrdev_open+0x5fb/0x680 fs/char_dev.c:414 do_dentry_open+0x78b/0x1020 fs/open.c:824 do_open fs/namei.c:3476 [inline] path_openat+0x273b/0x36a0 fs/namei.c:3609 do_filp_open+0x277/0x4f0 fs/namei.c:3636 do_sys_openat2+0x13b/0x500 fs/open.c:1214 do_sys_open fs/open.c:1230 [inline] __do_sys_openat fs/open.c:1246 [inline] __se_sys_openat fs/open.c:1241 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1241 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f3e041ffc97 RSP: 002b:00007fff87cc4780 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00000000200000c0 RCX: 00007f3e041ffc97 RDX: 0000000000000002 RSI: 00007f3e0428503b RDI: 00000000ffffff9c RBP: 00007f3e0428503b R08: 00007fff87cc4868 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fff87cc68dc R14: 0000000000000036 R15: 00007fff87cc68e0 Showing all locks held in the system: 2 locks held by kworker/u4:0/8: 5 locks held by kworker/1:0/20: #0: ffff888141db5d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7db/0x1190 kernel/workqueue.c:2280 #1: ffffc90000da7d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x81b/0x1190 kernel/workqueue.c:2282 #2: ffff888147bf8220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #2: ffff888147bf8220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1b2/0xe40 drivers/usb/core/hub.c:5688 #3: ffff8880236e5220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #3: ffff8880236e5220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x560 drivers/base/dd.c:948 #4: ffff8880238521a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #4: ffff8880238521a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x560 drivers/base/dd.c:948 1 lock held by khungtaskd/26: #0: ffffffff8cb1d460 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 5 locks held by kworker/0:2/142: #0: ffff888141db5d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7db/0x1190 kernel/workqueue.c:2280 #1: ffffc900027cfd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x81b/0x1190 kernel/workqueue.c:2282 #2: ffff88801df95220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #2: ffff88801df95220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1b2/0xe40 drivers/usb/core/hub.c:5688 #3: ffff88807ede3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #3: ffff88807ede3220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x560 drivers/base/dd.c:948 #4: ffff88807ede41a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #4: ffff88807ede41a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x560 drivers/base/dd.c:948 2 locks held by getty/3283: #0: ffff88814b221098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc90002b662e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6c5/0x1c60 drivers/tty/n_tty.c:2075 5 locks held by kworker/1:1/3638: #0: ffff888141db5d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7db/0x1190 kernel/workqueue.c:2280 #1: ffffc9000281fd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x81b/0x1190 kernel/workqueue.c:2282 #2: ffff888147c98220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #2: ffff888147c98220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1b2/0xe40 drivers/usb/core/hub.c:5688 #3: ffff88802313a220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #3: ffff88802313a220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x560 drivers/base/dd.c:948 #4: ffff88802396a1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #4: ffff88802396a1a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x560 drivers/base/dd.c:948 5 locks held by kworker/1:3/3641: #0: ffff888141db5d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7db/0x1190 kernel/workqueue.c:2280 #1: ffffc9000284fd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x81b/0x1190 kernel/workqueue.c:2282 #2: ffff88801e6a8220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #2: ffff88801e6a8220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1b2/0xe40 drivers/usb/core/hub.c:5688 #3: ffff88801c52a220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #3: ffff88801c52a220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x560 drivers/base/dd.c:948 #4: ffff8880236e21a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #4: ffff8880236e21a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x560 drivers/base/dd.c:948 5 locks held by kworker/1:4/3643: #0: ffff888141db5d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7db/0x1190 kernel/workqueue.c:2280 #1: ffffc9000286fd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x81b/0x1190 kernel/workqueue.c:2282 #2: ffff88801e858220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #2: ffff88801e858220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1b2/0xe40 drivers/usb/core/hub.c:5688 #3: ffff88801805f220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #3: ffff88801805f220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x560 drivers/base/dd.c:948 #4: ffff88802396d1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #4: ffff88802396d1a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x560 drivers/base/dd.c:948 1 lock held by syz-executor275/3663: #0: ffffffff8d225d28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x57/0x3c0 drivers/char/misc.c:107 1 lock held by syz-executor275/3664: #0: ffffffff8d225d28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x57/0x3c0 drivers/char/misc.c:107 1 lock held by syz-executor275/3665: #0: ffffffff8d225d28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x57/0x3c0 drivers/char/misc.c:107 1 lock held by syz-executor275/3666: #0: ffffffff8d225d28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x57/0x3c0 drivers/char/misc.c:107 1 lock held by syz-executor275/3667: #0: ffffffff8d225d28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x57/0x3c0 drivers/char/misc.c:107 2 locks held by syz-executor275/3668: #0: ffffffff8d225d28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x57/0x3c0 drivers/char/misc.c:107 #1: ffffffff8c9d5148 (system_transition_mutex){+.+.}-{3:3}, at: snapshot_open+0x23/0x260 kernel/power/user.c:54 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.17.0-rc5-syzkaller-00306-g2293be58d6a1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106 nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0xc82/0xcd0 kernel/hung_task.c:369 kthread+0x2a3/0x2d0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.17.0-rc5-syzkaller-00306-g2293be58d6a1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:22 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:116 [inline] RIP: 0010:acpi_idle_do_entry drivers/acpi/processor_idle.c:556 [inline] RIP: 0010:acpi_idle_enter+0x42d/0x790 drivers/acpi/processor_idle.c:692 Code: fd 48 83 e3 08 44 8b 7c 24 04 0f 85 22 01 00 00 4c 8d 74 24 40 e8 03 a2 0d fd eb 0c e8 ec fb 06 fd 0f 00 2d 75 74 64 06 fb f4 <4c> 89 f3 48 c1 eb 03 42 80 3c 23 00 74 08 4c 89 f7 e8 ad b6 53 fd RSP: 0018:ffffffff8c807ba0 EFLAGS: 00000286 RAX: 1ecaf199d5787700 RBX: 0000000000000000 RCX: ffffffff90bf5803 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff8c807c50 R08: ffffffff818c3c10 R09: fffffbfff19176d9 R10: fffffbfff19176d9 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff888015bd5064 R14: ffffffff8c807be0 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056215df5eba8 CR3: 000000007f360000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: cpuidle_enter_state+0x507/0xea0 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x59/0x90 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:158 [inline] cpuidle_idle_call kernel/sched/idle.c:239 [inline] do_idle+0x3e8/0x670 kernel/sched/idle.c:306 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:403 start_kernel+0x4bf/0x56e init/main.c:1138 secondary_startup_64_no_verify+0xc4/0xcb ---------------- Code disassembly (best guess): 0: fd std 1: 48 83 e3 08 and $0x8,%rbx 5: 44 8b 7c 24 04 mov 0x4(%rsp),%r15d a: 0f 85 22 01 00 00 jne 0x132 10: 4c 8d 74 24 40 lea 0x40(%rsp),%r14 15: e8 03 a2 0d fd callq 0xfd0da21d 1a: eb 0c jmp 0x28 1c: e8 ec fb 06 fd callq 0xfd06fc0d 21: 0f 00 2d 75 74 64 06 verw 0x6647475(%rip) # 0x664749d 28: fb sti 29: f4 hlt * 2a: 4c 89 f3 mov %r14,%rbx <-- trapping instruction 2d: 48 c1 eb 03 shr $0x3,%rbx 31: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1) 36: 74 08 je 0x40 38: 4c 89 f7 mov %r14,%rdi 3b: e8 ad b6 53 fd callq 0xfd53b6ed