block nbd0: Device being setup by another task
REISERFS (device loop2): Using r5 hash to sort names
REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage.
INFO: task kworker/0:5:11295 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/0:5     D25712 11295      2 0x80000000
Workqueue: usb_hub_wq hub_event
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 usb_kill_urb.part.0+0x197/0x220 drivers/usb/core/urb.c:697
 usb_kill_urb+0x7c/0x90 drivers/usb/core/urb.c:692
 usb_start_wait_urb+0x252/0x4c0 drivers/usb/core/message.c:63
 usb_internal_control_msg drivers/usb/core/message.c:101 [inline]
 usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:152
 hub_port_init+0x12dc/0x3120 drivers/usb/core/hub.c:4704
 hub_port_connect drivers/usb/core/hub.c:5070 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5253 [inline]
 port_event drivers/usb/core/hub.c:5361 [inline]
 hub_event+0x1ccd/0x44a0 drivers/usb/core/hub.c:5441
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

Showing all locks held in the system:
1 lock held by khungtaskd/1570:
 #0: 00000000de3329be (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
1 lock held by in:imklog/7800:
 #0: 000000000b3ca047 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
1 lock held by syz-executor.2/8155:
3 locks held by kworker/u4:7/8862:
5 locks held by kworker/0:5/11295:
 #0: 0000000061396be2 ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 00000000804917dd ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
 #2: 0000000039d5d048 (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline]
 #2: 0000000039d5d048 (&dev->mutex){....}, at: hub_event+0x11e/0x44a0 drivers/usb/core/hub.c:5387
 #3: 000000003ec2158f (&port_dev->status_lock){+.+.}, at: usb_lock_port drivers/usb/core/hub.c:2983 [inline]
 #3: 000000003ec2158f (&port_dev->status_lock){+.+.}, at: hub_port_connect drivers/usb/core/hub.c:5069 [inline]
 #3: 000000003ec2158f (&port_dev->status_lock){+.+.}, at: hub_port_connect_change drivers/usb/core/hub.c:5253 [inline]
 #3: 000000003ec2158f (&port_dev->status_lock){+.+.}, at: port_event drivers/usb/core/hub.c:5361 [inline]
 #3: 000000003ec2158f (&port_dev->status_lock){+.+.}, at: hub_event+0x1cb8/0x44a0 drivers/usb/core/hub.c:5441
 #4: 000000005522714b (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b9/0x3120 drivers/usb/core/hub.c:4578
5 locks held by syz-executor.1/10580:

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
 watchdog+0x991/0xe60 kernel/hung_task.c:287
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10610 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:__next_base kernel/time/hrtimer.c:486 [inline]
RIP: 0010:__hrtimer_run_queues+0xdc/0xe60 kernel/time/hrtimer.c:1501
Code: 89 ee e8 87 5a 0e 00 85 ed 0f 84 75 0a 00 00 e8 0a 59 0e 00 89 e8 f3 48 0f bc c0 0f b3 c5 89 c3 89 c0 48 83 c0 01 89 6c 24 64 <48> c1 e0 07 48 03 04 24 49 89 c6 0f 84 49 0a 00 00 48 c7 c0 60 f1
RSP: 0018:ffff8880ba007e00 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff81542c59
RDX: 0000000000010000 RSI: ffffffff81542c66 RDI: 0000000000000005
RBP: 0000000000000002 R08: ffffffff8c665018 R09: 0000000000000000
R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000086
R13: 0000000000000002 R14: ffff8880ba024cc0 R15: 7fffffffffffffff
FS:  00007f832119f700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b235b1e8c8 CR3: 00000000936c4000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 hrtimer_interrupt+0x326/0x9e0 kernel/time/hrtimer.c:1585
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1071 [inline]
 smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1096
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:write_comp_data+0x23/0x70 kernel/kcov.c:122
Code: 1f 84 00 00 00 00 00 49 89 f1 49 89 fa 65 48 8b 34 25 c0 df 01 00 65 8b 05 7a 59 9f 7e a9 00 01 1f 00 75 4f 8b 86 60 13 00 00 <83> f8 03 75 44 48 8b 86 68 13 00 00 8b b6 64 13 00 00 48 8b 38 48
RSP: 0018:ffff88823401f868 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff83771e23
RDX: 0000000000000002 RSI: ffff8880b2c42280 RDI: 0000000000000005
RBP: ffffffff88b3e120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff88b3e0e0 R14: ffff8880914b6ac0 R15: ffff8880914b6ac0
 check_preemption_disabled+0x33/0x280 lib/smp_processor_id.c:15
 rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1078 [inline]
 rcu_lockdep_current_cpu_online+0xb2/0x1b0 kernel/rcu/tree.c:1068
 rcu_read_lock_sched_held+0xd3/0x1d0 kernel/rcu/update.c:115
 trace_mm_page_free include/trace/events/kmem.h:151 [inline]
 free_pages_prepare mm/page_alloc.c:1016 [inline]
 free_pcp_prepare mm/page_alloc.c:1070 [inline]
 free_unref_page_prepare+0x4af/0x5d0 mm/page_alloc.c:2763
 free_unref_page+0x20/0x170 mm/page_alloc.c:2812
 arch_tlb_finish_mmu mm/memory.c:292 [inline]
 tlb_finish_mmu+0x162/0x200 mm/memory.c:444
 exit_mmap+0x2d9/0x530 mm/mmap.c:3095
 __mmput kernel/fork.c:1016 [inline]
 mmput+0x14e/0x4a0 kernel/fork.c:1037
 exit_mm kernel/exit.c:549 [inline]
 do_exit+0xaec/0x2be0 kernel/exit.c:857
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f8322c2d0f9
Code: Bad RIP value.
RSP: 002b:00007f832119f218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f8322d4cf88 RCX: 00007f8322c2d0f9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f8322d4cf88
RBP: 00007f8322d4cf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8322d4cf8c
R13: 00007ffe11be548f R14: 00007f832119f300 R15: 0000000000022000