syzbot
WARNING in usb_stor_msg_common/usb_submit_urb
Status:
upstream: reported syz repro on 2026/08/22 04:14
Reported-by: syzbot+74bbab8d889bb42fa835@syzkaller.appspotmail.com
First crash: 5d08h, last: 4d23h
Sample crash report:
------------[ cut here ]------------
URB ffff8881425bed00 submitted while active
WARNING: CPU: 0 PID: 4285 at drivers/usb/core/urb.c:378 usb_submit_urb+0xfba/0x18d0 drivers/usb/core/urb.c:378
Modules linked in:
CPU: 0 PID: 4285 Comm: kworker/0:4 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: events_freezable usb_stor_scan_dwork
RIP: 0010:usb_submit_urb+0xfba/0x18d0 drivers/usb/core/urb.c:378
Code: c5 8a 44 89 ea e8 a6 3e d7 03 e9 f3 fb ff ff e8 1c b0 96 fb c6 05 c9 13 95 07 01 48 c7 c7 80 39 c5 8a 48 89 de e8 46 5c d3 03 <0f> 0b e9 bc f0 ff ff e8 fa af 96 fb eb 1f e8 f3 af 96 fb 44 8b 64
RSP: 0018:ffffc9000306f9d8 EFLAGS: 00010246
RAX: 7284c5eb0ac6fa00 RBX: ffff8881425bed00 RCX: ffff88802a191dc0
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc9000306fb98 R08: ffffc9000306f507 R09: 1ffff9200060dea0
R10: dffffc0000000000 R11: fffff5200060dea1 R12: 0000000000000c00
R13: ffff88807a5fd0d8 R14: ffff8881425bed08 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002000 CR3: 000000007e34d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
usb_stor_msg_common+0x29f/0x500 drivers/usb/storage/transport.c:143
usb_stor_control_msg drivers/usb/storage/transport.c:205 [inline]
usb_stor_Bulk_max_lun+0x2f9/0x5b0 drivers/usb/storage/transport.c:1081
usb_stor_scan_dwork+0xf0/0x260 drivers/usb/storage/usb.c:906
process_one_work+0x867/0xff0 kernel/workqueue.c:2310
worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
kthread+0x42e/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
</TASK>
* Struck through repros no longer work on HEAD.