INFO: task syz-executor.5:7637 blocked for more than 143 seconds.
      Tainted: G        W         5.13.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5  state:D stack:27888 pid: 7637 ppid:  9013 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:4683 [inline]
 __schedule+0x934/0x2710 kernel/sched/core.c:5940
 schedule+0xd3/0x270 kernel/sched/core.c:6019
 schedule_timeout+0x1db/0x2a0 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_timeout+0x171/0x280 kernel/sched/completion.c:157
 usb_start_wait_urb+0x144/0x4c0 drivers/usb/core/message.c:63
 usb_bulk_msg+0x226/0x550 drivers/usb/core/message.c:387
 do_proc_bulk+0x3a3/0x750 drivers/usb/core/devio.c:1236
 proc_bulk_compat drivers/usb/core/devio.c:2057 [inline]
 usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline]
 usbdev_ioctl+0x990/0x36c0 drivers/usb/core/devio.c:2713
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:1069 [inline]
 __se_sys_ioctl fs/ioctl.c:1055 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055
 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: 0033:0x4665d9
RSP: 002b:00007fd12a661188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 0000000020000040 RSI: 00000000c0105502 RDI: 0000000000000003
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 0000000000a9fb1f R14: 00007fd12a661300 R15: 0000000000022000
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 1613 Comm: khungtaskd Tainted: G        W         5.13.0-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_lvl+0xcd/0x134 lib/dump_stack.c:96
 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+0xd4b/0xfb0 kernel/hung_task.c:294
 kthread+0x3e5/0x4d0 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: 232 Comm: kworker/u4:5 Tainted: G        W         5.13.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue:  0x0 (bat_events)
RIP: 0010:rb_erase+0x62c/0x1210 lib/rbtree.c:444
Code: 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 51 0a 00 00 4c 89 73 08 4d 85 f6 0f 85 db 00 00 00 <41> 83 e4 01 0f 85 41 fc ff ff e9 0a fc ff ff 4c 89 e8 49 89 ee 4c
RSP: 0018:ffffc900019afc68 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: ffff88807f395590 RCX: 1ffff11017386b67
RDX: 1ffff1100fe72ab4 RSI: ffff8880b9c35b30 RDI: ffff88807f3955a0
RBP: ffff88807f395590 R08: ffff8880b9c35b00 R09: ffffffff8deb5217
R10: fffffbfff1bd6a42 R11: 0000000000000001 R12: ffff88807f395590
R13: ffff8880123c00d0 R14: 0000000000000000 R15: ffff8880b9c35b30
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd1cf9dd018 CR3: 000000001d5d1000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 rb_erase_cached include/linux/rbtree.h:153 [inline]
 __dequeue_entity kernel/sched/fair.c:553 [inline]
 set_next_entity+0x262/0x460 kernel/sched/fair.c:4458
 pick_next_task_fair+0x6cc/0xdb0 kernel/sched/fair.c:7274
 __pick_next_task kernel/sched/core.c:5304 [inline]
 pick_next_task kernel/sched/core.c:5774 [inline]
 __schedule+0x391/0x2710 kernel/sched/core.c:5904
 schedule+0xd3/0x270 kernel/sched/core.c:6019
 worker_thread+0x15c/0x11f0 kernel/workqueue.c:2443
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295