syzbot
WARNING in usb_stor_msg_common/usb_submit_urb
Status:
upstream: reported on 2026/08/19 13:19
Reported-by: syzbot+22ea20ef3afb6785b122@syzkaller.appspotmail.com
First crash: 7d00h, last: 5d16h
Sample crash report:
------------[ cut here ]------------
URB ffff88802f6a1200 submitted while active
WARNING: CPU: 1 PID: 4734 at drivers/usb/core/urb.c:379 usb_submit_urb+0xfb8/0x18d0 drivers/usb/core/urb.c:379
Modules linked in:
CPU: 1 PID: 4734 Comm: kworker/1:14 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+0xfb8/0x18d0 drivers/usb/core/urb.c:379
Code: 2e 8b 44 89 ea e8 29 6d fe 03 e9 bb fb ff ff e8 1e e4 56 fb c6 05 18 65 e1 07 01 48 c7 c7 a0 ec 2e 8b 48 89 de e8 68 6d 22 fb <0f> 0b e9 be f0 ff ff e8 fc e3 56 fb eb 1f e8 f5 e3 56 fb 44 8b 64
RSP: 0018:ffffc9000563f9d8 EFLAGS: 00010246
RAX: d84f070f8d7b8100 RBX: ffff88802f6a1200 RCX: ffff888054aa5a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc9000563fb98 R08: ffffc9000563f667 R09: 1ffff92000ac7ecc
R10: dffffc0000000000 R11: fffff52000ac7ecd R12: 0000000000000c00
R13: ffff888029cf8ee0 R14: ffff88802f6a1208 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555581903a38 CR3: 000000005cfbb000 CR4: 00000000003506e0
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+0x8ab/0x1160 kernel/workqueue.c:2292
worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439
kthread+0x29d/0x330 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
* Struck through repros no longer work on HEAD.