------------[ cut here ]------------
URB ffff88816ff9c700 submitted while active
WARNING: drivers/usb/core/urb.c:379 at usb_submit_urb+0x79/0x18b0, CPU#1: kworker/1:7/11304
Modules linked in:
CPU: 1 UID: 0 PID: 11304 Comm: kworker/1:7 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: events_freezable usb_stor_scan_dwork
RIP: 0010:usb_submit_urb+0x7c/0x18b0
Code: 4c 89 f0 48 c1 e8 03 80 3c 28 00 74 08 4c 89 f7 e8 59 a0 d4 fa 49 83 3e 00 74 40 e8 de a3 66 fa 48 8d 3d e7 cd 04 09 48 89 de <67> 48 0f b9 3a b8 f0 ff ff ff eb 11 e8 c3 a3 66 fa eb 05 e8 bc a3
RSP: 0018:ffffc900086a7898 EFLAGS: 00010293
RAX: ffffffff87604762 RBX: ffff88816ff9c700 RCX: ffff888169723c00
RDX: 0000000000000000 RSI: ffff88816ff9c700 RDI: ffffffff90651550
RBP: dffffc0000000000 R08: 0000000000000002 R09: 0000000000000000
R10: ffffc900086a7980 R11: fffff520010d4f3b R12: ffff88816ff9c768
R13: ffff8881bd26d0a0 R14: ffff88816ff9c708 R15: 0000000000000c00
FS:  0000000000000000(0000) GS:ffff8882a8f5c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f74377eb7c0 CR3: 00000001725bc000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 usb_stor_msg_common+0x2a2/0x500
 usb_stor_Bulk_max_lun+0x2fd/0x5b0
 usb_stor_scan_dwork+0xf4/0x2c0
 process_scheduled_works+0xa8e/0x14e0
 worker_thread+0xa47/0xfb0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
