INFO: task syz-executor.3:13848 blocked for more than 143 seconds.
      Not tainted 5.9.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:28496 pid:13848 ppid:  7048 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3778 [inline]
 __schedule+0xea9/0x2230 kernel/sched/core.c:4527
 schedule+0xd0/0x2a0 kernel/sched/core.c:4602
 schedule_timeout+0x1d8/0x250 kernel/time/timer.c:1855
 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+0x15e/0x270 kernel/sched/completion.c:157
 usb_start_wait_urb+0x144/0x2b0 drivers/usb/core/message.c:63
 usb_bulk_msg+0x226/0x550 drivers/usb/core/message.c:254
 do_proc_bulk+0x39b/0x710 drivers/usb/core/devio.c:1231
 proc_bulk drivers/usb/core/devio.c:1268 [inline]
 usbdev_do_ioctl drivers/usb/core/devio.c:2542 [inline]
 usbdev_ioctl+0x586/0x3360 drivers/usb/core/devio.c:2708
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl fs/ioctl.c:739 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45d5b9
Code: Bad RIP value.
RSP: 002b:00007fbe5055ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000001aa40 RCX: 000000000045d5b9
RDX: 0000000020000140 RSI: 00000000c0185502 RDI: 0000000000000003
RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
R13: 000000000169fb6f R14: 00007fbe5055b9c0 R15: 000000000118cf4c

Showing all locks held in the system:
1 lock held by khungtaskd/1164:
 #0: ffffffff89bd6a40 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:5829
1 lock held by systemd-journal/3897:
1 lock held by in:imklog/6532:
 #0: ffff888094b4a630 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:930

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

NMI backtrace for cpu 1
CPU: 1 PID: 1164 Comm: khungtaskd Not tainted 5.9.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x198/0x1fd lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x70/0xb1 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1b3/0x223 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+0xd7d/0x1000 kernel/hung_task.c:295
 kthread+0x3b5/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6837 Comm: syz-fuzzer Not tainted 5.9.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0033:0x775bd7
Code: a8 00 00 00 48 8d 05 e8 2f 15 00 48 89 04 24 e8 af 71 c9 ff 48 8b 44 24 08 48 89 44 24 78 48 8b 8c 24 a8 00 00 00 48 8b 51 08 <0f> b6 59 04 8b 31 48 8b 79 18 4c 8b 41 10 89 30 88 58 04 4c 89 40
RSP: 002b:000000c010786de8 EFLAGS: 00000212
RAX: 000000c01962eea0 RBX: 0000000000000000 RCX: 000000c00d98d2e0
RDX: 000000c00d79f400 RSI: 0000000000000020 RDI: 0000000000000020
RBP: 000000c010786ed8 R08: 00007f3757d0a775 R09: 0000000000203006
R10: 0000000000000004 R11: 0000000000000012 R12: 0000000000000020
R13: 0000000000000000 R14: 0000000000ade49d R15: 0000000000000000
FS:  000000c00003e790 GS:  0000000000000000