INFO: task kworker/0:7:9656 blocked for more than 143 seconds. Not tainted 5.13.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:7 state:D stack:25936 pid: 9656 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_timeout+0x1db/0x250 kernel/time/timer.c:1868 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+0x168/0x270 kernel/sched/completion.c:138 port100_send_cmd_sync drivers/nfc/port100.c:923 [inline] port100_get_command_type_mask drivers/nfc/port100.c:1008 [inline] port100_probe+0x9e4/0x1340 drivers/nfc/port100.c:1554 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396 really_probe+0x291/0xf60 drivers/base/dd.c:576 driver_probe_device+0x298/0x410 drivers/base/dd.c:763 __device_attach_driver+0x203/0x2c0 drivers/base/dd.c:870 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431 __device_attach+0x228/0x4b0 drivers/base/dd.c:938 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0xbe0/0x2100 drivers/base/core.c:3324 usb_set_configuration+0x113f/0x1910 drivers/usb/core/message.c:2164 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293 really_probe+0x291/0xf60 drivers/base/dd.c:576 driver_probe_device+0x298/0x410 drivers/base/dd.c:763 __device_attach_driver+0x203/0x2c0 drivers/base/dd.c:870 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431 __device_attach+0x228/0x4b0 drivers/base/dd.c:938 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0xbe0/0x2100 drivers/base/core.c:3324 usb_new_device.cold+0x721/0x1058 drivers/usb/core/hub.c:2556 hub_port_connect drivers/usb/core/hub.c:5276 [inline] hub_port_connect_change drivers/usb/core/hub.c:5416 [inline] port_event drivers/usb/core/hub.c:5562 [inline] hub_event+0x2357/0x4330 drivers/usb/core/hub.c:5644 process_one_work+0x98d/0x1600 kernel/workqueue.c:2276 worker_thread+0x64c/0x1120 kernel/workqueue.c:2422 kthread+0x3b1/0x4a0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 INFO: task syz-executor.3:9965 blocked for more than 143 seconds. Not tainted 5.13.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:26848 pid: 9965 ppid: 8766 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7d4/0x10c0 kernel/locking/mutex.c:1104 misc_open+0x55/0x4a0 drivers/char/misc.c:107 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4b9/0x11b0 fs/open.c:826 do_open fs/namei.c:3361 [inline] path_openat+0x1c0e/0x27e0 fs/namei.c:3494 do_filp_open+0x190/0x3d0 fs/namei.c:3521 do_sys_openat2+0x16d/0x420 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1214 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007f4c8ce88188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665d9 RDX: 0000000000004800 RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 0000000000a9fb1f R14: 00007f4c8ce88300 R15: 0000000000022000 INFO: task syz-executor.0:10035 blocked for more than 144 seconds. Not tainted 5.13.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:27848 pid:10035 ppid: 8457 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7d4/0x10c0 kernel/locking/mutex.c:1104 misc_open+0x55/0x4a0 drivers/char/misc.c:107 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4b9/0x11b0 fs/open.c:826 do_open fs/namei.c:3361 [inline] path_openat+0x1c0e/0x27e0 fs/namei.c:3494 do_filp_open+0x190/0x3d0 fs/namei.c:3521 do_sys_openat2+0x16d/0x420 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1214 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4196c4 RSP: 002b:00007f48a7fbc040 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004196c4 RDX: 0000000000000002 RSI: 00000000004bea81 RDI: 00000000ffffff9c RBP: 00000000004bea81 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002 R13: 0000000000000000 R14: 00000000200000c0 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1642: #0: ffffffff8bf79620 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6333 2 locks held by kworker/u4:6/3111: #0: ffff8880b9d35658 (&rq->lock){-.-.}-{2:2}, at: newidle_balance+0x801/0xe60 kernel/sched/fair.c:10671 #1: ffff8880b9d1f988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x1b8/0x670 kernel/sched/psi.c:863 5 locks held by kworker/0:7/9656: #0: ffff8880193f6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8880193f6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff8880193f6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff8880193f6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff8880193f6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff8880193f6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2247 #1: ffffc9000449fda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2251 #2: ffff888020e08220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #2: ffff888020e08220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5590 #3: ffff8880784f8220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #3: ffff8880784f8220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4b0 drivers/base/dd.c:913 #4: ffff8880315eb1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #4: ffff8880315eb1a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4b0 drivers/base/dd.c:913 2 locks held by syz-executor.3/9961: #0: ffffffff8c99e6e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x55/0x4a0 drivers/char/misc.c:107 #1: ffffffff8be49fe8 (system_transition_mutex){+.+.}-{3:3}, at: snapshot_open+0x3b/0x2a0 kernel/power/user.c:54 1 lock held by syz-executor.3/9965: #0: ffffffff8c99e6e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x55/0x4a0 drivers/char/misc.c:107 1 lock held by syz-executor.0/10035: #0: ffffffff8c99e6e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x55/0x4a0 drivers/char/misc.c:107 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1642 Comm: khungtaskd Not tainted 5.13.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline] watchdog+0xd48/0xfb0 kernel/hung_task.c:294 kthread+0x3b1/0x4a0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4851 Comm: systemd-journal Not tainted 5.13.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:get_vtime_delta+0x2/0x420 kernel/sched/cputime.c:645 Code: 00 eb bc 48 89 04 24 e8 9c c3 68 00 48 8b 04 24 e9 70 ff ff ff e8 8e c3 68 00 e9 42 ff ff ff 66 0f 1f 84 00 00 00 00 00 41 57 <41> 56 41 55 41 54 55 53 48 89 fb 4c 8d 63 30 48 83 ec 08 e8 b6 05 RSP: 0018:ffffc9000159fec8 EFLAGS: 00000086 RAX: 0000000000000000 RBX: ffff888015bbd4c0 RCX: ffffffff815a3747 RDX: 1ffff11002b77bd6 RSI: 0000000000000000 RDI: ffff888015bbdb70 RBP: ffff888015bbdb70 R08: 0000000000000000 R09: ffffffff902278b7 R10: fffffbfff2044f16 R11: 0000000000000000 R12: ffff888015bbdb78 R13: ffff888015bbdbb0 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f495da938c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f495aeb8000 CR3: 000000001cdcb000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vtime_user_exit+0xb4/0x210 kernel/sched/cputime.c:720 __context_tracking_exit+0xb8/0xe0 kernel/context_tracking.c:160 user_exit_irqoff include/linux/context_tracking.h:47 [inline] __enter_from_user_mode kernel/entry/common.c:22 [inline] syscall_enter_from_user_mode+0x55/0x70 kernel/entry/common.c:104 do_syscall_64+0x1c/0xb0 arch/x86/entry/common.c:42 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f495cd2bf17 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:00007ffc134ff668 EFLAGS: 00000202 ORIG_RAX: 0000000000000027 RAX: ffffffffffffffda RBX: 00005640936da1e0 RCX: 00007f495cd2bf17 RDX: 00007ffc134ff720 RSI: 0000000000000000 RDI: 00005640936da1e0 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000069 R11: 0000000000000202 R12: 00007ffc134ff720 R13: 00000000000012f3 R14: 00007ffc13502510 R15: 00007ffc134ffb20