INFO: task kworker/1:0:20 blocked for more than 143 seconds. Not tainted 5.15.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0 state:D stack:25808 pid: 20 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1857 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x176/0x280 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+0x8eb/0x1180 drivers/nfc/port100.c:1557 usb_probe_interface+0x274/0x6a0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x1c2/0xb60 drivers/base/dd.c:596 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:751 driver_probe_device+0x44/0x110 drivers/base/dd.c:781 __device_attach_driver+0x185/0x250 drivers/base/dd.c:898 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:969 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0xa57/0x1b90 drivers/base/core.c:3396 usb_set_configuration+0x9fc/0x1750 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x74/0xa0 drivers/usb/core/generic.c:238 usb_probe_device+0x95/0x240 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x1c2/0xb60 drivers/base/dd.c:596 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:751 driver_probe_device+0x44/0x110 drivers/base/dd.c:781 __device_attach_driver+0x185/0x250 drivers/base/dd.c:898 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:969 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0xa57/0x1b90 drivers/base/core.c:3396 usb_new_device.cold+0x5cf/0xedf drivers/usb/core/hub.c:2563 hub_port_connect drivers/usb/core/hub.c:5348 [inline] hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] port_event drivers/usb/core/hub.c:5634 [inline] hub_event+0x10a3/0x36c0 drivers/usb/core/hub.c:5716 process_one_work+0x87f/0x1450 kernel/workqueue.c:2297 process_scheduled_works kernel/workqueue.c:2360 [inline] worker_thread+0x74b/0x1040 kernel/workqueue.c:2446 kthread+0x38b/0x460 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task syz-executor.4:9110 blocked for more than 143 seconds. Not tainted 5.15.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:27608 pid: 9110 ppid: 7025 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 misc_open+0x50/0x410 drivers/char/misc.c:107 chrdev_open+0x20f/0x650 fs/char_dev.c:414 do_dentry_open+0x42a/0xfc0 fs/open.c:822 do_open fs/namei.c:3428 [inline] path_openat+0x12fb/0x2240 fs/namei.c:3561 do_filp_open+0x199/0x3d0 fs/namei.c:3588 do_sys_openat2+0x11e/0x400 fs/open.c:1200 do_sys_open fs/open.c:1216 [inline] __do_sys_openat fs/open.c:1232 [inline] __se_sys_openat fs/open.c:1227 [inline] __x64_sys_openat+0x11b/0x1d0 fs/open.c:1227 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665e9 RSP: 002b:00007fcfca29a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000000020601 RSI: 00000000200003c0 RDI: ffffffffffffff9c RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fffc37a6c7f R14: 00007fcfca29a300 R15: 0000000000022000 INFO: task syz-executor.4:9121 blocked for more than 144 seconds. Not tainted 5.15.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:27608 pid: 9121 ppid: 7025 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 misc_open+0x50/0x410 drivers/char/misc.c:107 chrdev_open+0x20f/0x650 fs/char_dev.c:414 do_dentry_open+0x42a/0xfc0 fs/open.c:822 do_open fs/namei.c:3428 [inline] path_openat+0x12fb/0x2240 fs/namei.c:3561 do_filp_open+0x199/0x3d0 fs/namei.c:3588 do_sys_openat2+0x11e/0x400 fs/open.c:1200 do_sys_open fs/open.c:1216 [inline] __do_sys_openat fs/open.c:1232 [inline] __se_sys_openat fs/open.c:1227 [inline] __x64_sys_openat+0x11b/0x1d0 fs/open.c:1227 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4196d4 RSP: 002b:00007fcfca277040 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004196d4 RDX: 0000000000000002 RSI: 00000000004beaa1 RDI: 00000000ffffff9c RBP: 00000000004beaa1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002 R13: 0000000000000000 R14: 0000000020000140 R15: 0000000000022000 INFO: task syz-executor.4:9236 blocked for more than 144 seconds. Not tainted 5.15.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:28536 pid: 9236 ppid: 7025 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 misc_open+0x50/0x410 drivers/char/misc.c:107 chrdev_open+0x20f/0x650 fs/char_dev.c:414 do_dentry_open+0x42a/0xfc0 fs/open.c:822 do_open fs/namei.c:3428 [inline] path_openat+0x12fb/0x2240 fs/namei.c:3561 do_filp_open+0x199/0x3d0 fs/namei.c:3588 do_sys_openat2+0x11e/0x400 fs/open.c:1200 do_sys_open fs/open.c:1216 [inline] __do_sys_openat fs/open.c:1232 [inline] __se_sys_openat fs/open.c:1227 [inline] __x64_sys_openat+0x11b/0x1d0 fs/open.c:1227 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4196d4 RSP: 002b:00007fcfca256040 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004196d4 RDX: 0000000000000002 RSI: 00000000004beaa1 RDI: 00000000ffffff9c RBP: 00000000004beaa1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002 R13: 0000000000000000 R14: 00000000200000c0 R15: 0000000000022000 INFO: task syz-executor.5:9151 blocked for more than 144 seconds. Not tainted 5.15.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:27608 pid: 9151 ppid: 7026 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 misc_open+0x50/0x410 drivers/char/misc.c:107 chrdev_open+0x20f/0x650 fs/char_dev.c:414 do_dentry_open+0x42a/0xfc0 fs/open.c:822 do_open fs/namei.c:3428 [inline] path_openat+0x12fb/0x2240 fs/namei.c:3561 do_filp_open+0x199/0x3d0 fs/namei.c:3588 do_sys_openat2+0x11e/0x400 fs/open.c:1200 do_sys_open fs/open.c:1216 [inline] __do_sys_openat fs/open.c:1232 [inline] __se_sys_openat fs/open.c:1227 [inline] __x64_sys_openat+0x11b/0x1d0 fs/open.c:1227 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4196d4 RSP: 002b:00007fd2c3f02040 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004196d4 RDX: 0000000000000002 RSI: 00000000004beaa1 RDI: 00000000ffffff9c RBP: 00000000004beaa1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002 R13: 0000000000000000 R14: 0000000020000140 R15: 0000000000022000 INFO: task syz-executor.5:9228 blocked for more than 145 seconds. Not tainted 5.15.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:28536 pid: 9228 ppid: 7026 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 misc_open+0x50/0x410 drivers/char/misc.c:107 chrdev_open+0x20f/0x650 fs/char_dev.c:414 do_dentry_open+0x42a/0xfc0 fs/open.c:822 do_open fs/namei.c:3428 [inline] path_openat+0x12fb/0x2240 fs/namei.c:3561 do_filp_open+0x199/0x3d0 fs/namei.c:3588 do_sys_openat2+0x11e/0x400 fs/open.c:1200 do_sys_open fs/open.c:1216 [inline] __do_sys_openat fs/open.c:1232 [inline] __se_sys_openat fs/open.c:1227 [inline] __x64_sys_openat+0x11b/0x1d0 fs/open.c:1227 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4196d4 RSP: 002b:00007fd2c3ee1040 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004196d4 RDX: 0000000000000002 RSI: 00000000004beaa1 RDI: 00000000ffffff9c RBP: 00000000004beaa1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002 R13: 0000000000000000 R14: 00000000200000c0 R15: 0000000000022000 INFO: task syz-executor.0:9162 blocked for more than 145 seconds. Not tainted 5.15.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:27536 pid: 9162 ppid: 7022 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 misc_open+0x50/0x410 drivers/char/misc.c:107 chrdev_open+0x20f/0x650 fs/char_dev.c:414 do_dentry_open+0x42a/0xfc0 fs/open.c:822 do_open fs/namei.c:3428 [inline] path_openat+0x12fb/0x2240 fs/namei.c:3561 do_filp_open+0x199/0x3d0 fs/namei.c:3588 do_sys_openat2+0x11e/0x400 fs/open.c:1200 do_sys_open fs/open.c:1216 [inline] __do_sys_openat fs/open.c:1232 [inline] __se_sys_openat fs/open.c:1227 [inline] __x64_sys_openat+0x11b/0x1d0 fs/open.c:1227 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665e9 RSP: 002b:00007fec6dec1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000000020601 RSI: 00000000200003c0 RDI: ffffffffffffff9c RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffd934f160f R14: 00007fec6dec1300 R15: 0000000000022000 INFO: task syz-executor.0:9243 blocked for more than 145 seconds. Not tainted 5.15.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:28536 pid: 9243 ppid: 7022 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 misc_open+0x50/0x410 drivers/char/misc.c:107 chrdev_open+0x20f/0x650 fs/char_dev.c:414 do_dentry_open+0x42a/0xfc0 fs/open.c:822 do_open fs/namei.c:3428 [inline] path_openat+0x12fb/0x2240 fs/namei.c:3561 do_filp_open+0x199/0x3d0 fs/namei.c:3588 do_sys_openat2+0x11e/0x400 fs/open.c:1200 do_sys_open fs/open.c:1216 [inline] __do_sys_openat fs/open.c:1232 [inline] __se_sys_openat fs/open.c:1227 [inline] __x64_sys_openat+0x11b/0x1d0 fs/open.c:1227 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4196d4 RSP: 002b:00007fec6de7d040 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004196d4 RDX: 0000000000000002 RSI: 00000000004beaa1 RDI: 00000000ffffff9c RBP: 00000000004beaa1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002 R13: 0000000000000000 R14: 0000000020000140 R15: 0000000000022000 INFO: task syz-executor.0:9244 blocked for more than 146 seconds. Not tainted 5.15.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:28536 pid: 9244 ppid: 7022 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 misc_open+0x50/0x410 drivers/char/misc.c:107 chrdev_open+0x20f/0x650 fs/char_dev.c:414 do_dentry_open+0x42a/0xfc0 fs/open.c:822 do_open fs/namei.c:3428 [inline] path_openat+0x12fb/0x2240 fs/namei.c:3561 do_filp_open+0x199/0x3d0 fs/namei.c:3588 do_sys_openat2+0x11e/0x400 fs/open.c:1200 do_sys_open fs/open.c:1216 [inline] __do_sys_openat fs/open.c:1232 [inline] __se_sys_openat fs/open.c:1227 [inline] __x64_sys_openat+0x11b/0x1d0 fs/open.c:1227 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4196d4 RSP: 002b:00007fec6de5c040 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056c1a8 RCX: 00000000004196d4 RDX: 0000000000000002 RSI: 00000000004beaa1 RDI: 00000000ffffff9c RBP: 00000000004beaa1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002 R13: 0000000000000000 R14: 00000000200000c0 R15: 0000000000022000 INFO: task syz-executor.3:9172 blocked for more than 146 seconds. Not tainted 5.15.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:26664 pid: 9172 ppid: 7021 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 misc_open+0x50/0x410 drivers/char/misc.c:107 chrdev_open+0x20f/0x650 fs/char_dev.c:414 do_dentry_open+0x42a/0xfc0 fs/open.c:822 do_open fs/namei.c:3428 [inline] path_openat+0x12fb/0x2240 fs/namei.c:3561 do_filp_open+0x199/0x3d0 fs/namei.c:3588 do_sys_openat2+0x11e/0x400 fs/open.c:1200 do_sys_open fs/open.c:1216 [inline] __do_sys_openat fs/open.c:1232 [inline] __se_sys_openat fs/open.c:1227 [inline] __x64_sys_openat+0x11b/0x1d0 fs/open.c:1227 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665e9 RSP: 002b:00007f655ff79188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000000020601 RSI: 00000000200003c0 RDI: ffffffffffffff9c RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffed252b36f R14: 00007f655ff79300 R15: 0000000000022000 Showing all locks held in the system: 2 locks held by kworker/u4:1/10: 5 locks held by kworker/1:0/20: #0: ffff888141789138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888141789138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888141789138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888141789138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff888141789138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff888141789138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7a4/0x1450 kernel/workqueue.c:2268 #1: ffffc90000da7db8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d1/0x1450 kernel/workqueue.c:2272 #2: ffff888146b09220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #2: ffff888146b09220 (&dev->mutex){....}-{3:3}, at: hub_event+0x127/0x36c0 drivers/usb/core/hub.c:5662 #3: ffff888061663220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #3: ffff888061663220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x74/0x410 drivers/base/dd.c:944 #4: ffff8880110871a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #4: ffff8880110871a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x74/0x410 drivers/base/dd.c:944 1 lock held by khungtaskd/26: #0: ffffffff8ab76880 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446 2 locks held by in:imklog/6234: #0: ffff88807eaafc70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x9c/0xb0 fs/file.c:990 #1: ffffffff8f58cb88 (&obj_hash[i].lock){-.-.}-{2:2}, at: is_bpf_text_address+0x0/0xe0 kernel/bpf/core.c:693 1 lock held by syz-executor.4/9110: #0: ffffffff8b583ca8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.4/9121: #0: ffffffff8b583ca8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.4/9236: #0: ffffffff8b583ca8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 2 locks held by syz-executor.5/9144: #0: ffffffff8b583ca8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 #1: ffffffff8aa47088 (system_transition_mutex){+.+.}-{3:3}, at: snapshot_open+0x1c/0x210 kernel/power/user.c:54 1 lock held by syz-executor.5/9151: #0: ffffffff8b583ca8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.5/9228: #0: ffffffff8b583ca8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.0/9162: #0: ffffffff8b583ca8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.0/9243: #0: ffffffff8b583ca8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.0/9244: #0: ffffffff8b583ca8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.3/9172: #0: ffffffff8b583ca8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.3/9247: #0: ffffffff8b583ca8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.3/9248: #0: ffffffff8b583ca8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.1/9173: #0: ffffffff8b583ca8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.1/9245: #0: ffffffff8b583ca8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.1/9246: #0: ffffffff8b583ca8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 1 lock held by syz-executor.2/9177: #0: ffffffff8b583ca8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x50/0x410 drivers/char/misc.c:107 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.15.0-rc7-syzkaller #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+0x57/0x7d lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x30/0xc0 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x11a/0x160 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0x88c/0xbf0 kernel/hung_task.c:295 kthread+0x38b/0x460 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 2963 Comm: systemd-journal Not tainted 5.15.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:91 [inline] RIP: 0010:lock_acquire kernel/locking/lockdep.c:5601 [inline] RIP: 0010:lock_acquire+0x13b/0x510 kernel/locking/lockdep.c:5590 Code: 85 14 01 00 00 65 48 8b 14 25 40 f0 01 00 48 8d ba f4 09 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 0f b6 0c 01 <48> 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 70 03 00 00 8b RSP: 0018:ffffc900012dfe10 EFLAGS: 00000807 RAX: dffffc0000000000 RBX: 1ffff9200025bfc4 RCX: 0000000000000000 RDX: ffff88807c07b880 RSI: ffffffff88cb4a80 RDI: ffff88807c07c274 RBP: 0000000000000001 R08: 0000000000000000 R09: ffff8880b9e329cb R10: ffffed10173c6539 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88807c07bf40 R15: 0000000000000000 FS: 00007fabc29658c0(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fabbfdea020 CR3: 000000007be59000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_write_seqcount_begin_nested include/linux/seqlock.h:520 [inline] do_write_seqcount_begin include/linux/seqlock.h:545 [inline] vtime_user_enter+0x9f/0x170 kernel/sched/cputime.c:709 __context_tracking_enter+0x93/0xa0 kernel/context_tracking.c:82 user_enter_irqoff include/linux/context_tracking.h:41 [inline] __exit_to_user_mode kernel/entry/common.c:130 [inline] syscall_exit_to_user_mode+0x48/0x60 kernel/entry/common.c:302 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fabc1bfdf17 Code: ff ff ff 48 8b 4d a0 0f b7 51 fe 48 8b 4d a8 66 89 54 08 fe e9 1a ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 b8 27 00 00 00 0f 05 0f 1f 84 00 00 00 00 00 b8 6e 00 00 00 0f 05 c3 0f 1f 84 00 00 RSP: 002b:00007ffd5c26a1b8 EFLAGS: 00000202 ORIG_RAX: 0000000000000027 RAX: 0000000000000b93 RBX: 000055a65ed461e0 RCX: 00007fabc1bfdf17 RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 000055a65ed461e0 RBP: 0000000000000b93 R08: 0000000061789579 R09: 00007ffd5c3f5080 R10: 00007ffd5c3f5080 R11: 0000000000000202 R12: ffffffffffffffff R13: 00007ffd5c26a248 R14: 000055a65ec15958 R15: 0005cf4a36cc66f1 ---------------- Code disassembly (best guess): 0: 85 14 01 test %edx,(%rcx,%rax,1) 3: 00 00 add %al,(%rax) 5: 65 48 8b 14 25 40 f0 mov %gs:0x1f040,%rdx c: 01 00 e: 48 8d ba f4 09 00 00 lea 0x9f4(%rdx),%rdi 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 48 89 f9 mov %rdi,%rcx 22: 48 c1 e9 03 shr $0x3,%rcx 26: 0f b6 0c 01 movzbl (%rcx,%rax,1),%ecx * 2a: 48 89 f8 mov %rdi,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 c8 cmp %cl,%al 35: 7c 08 jl 0x3f 37: 84 c9 test %cl,%cl 39: 0f 85 70 03 00 00 jne 0x3af 3f: 8b .byte 0x8b