WARNING in usb_stor_msg_common/usb_submit_urb

Status: upstream: reported C repro on 2026/08/22 04:14
Reported-by: syzbot+74bbab8d889bb42fa835@syzkaller.appspotmail.com
First crash: 52d, last: 30d
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2026/10/04 linux-5.15.y (ToT) [unknown] syz Failed due to an error; will retry later
2026/10/04 upstream (ToT) a74306e2e676 syz Didn't crash
▶ ▼ Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in usb_stor_msg_common/usb_submit_urb -1 22 31d 55d 3/3 fixed on 2026/09/14 13:08
linux-6.6 WARNING in usb_stor_msg_common/usb_submit_urb origin:upstream -1 syz, C error 22 31d 295d 0/2 upstream: reported C repro on 2025/12/22 11:12
upstream WARNING in usb_stor_msg_common/usb_submit_urb prio:high usb usb-storage -1 syz, C error 3349 22d 653d 27/29 upstream: reported C repro on 2024/12/29 09:01
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2026/10/04 05:12 22m retest repro linux-5.15.y no crash job log log

Sample crash report:
------------[ cut here ]------------
URB ffff8881433ffe00 submitted while active
WARNING: CPU: 1 PID: 21 at drivers/usb/core/urb.c:378 usb_submit_urb+0xfba/0x18d0 drivers/usb/core/urb.c:378
Modules linked in:
CPU: 1 PID: 21 Comm: kworker/1:0 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:ffffc90000db79d8 EFLAGS: 00010246
RAX: c96bbad556379300 RBX: ffff8881433ffe00 RCX: ffff8880179c1dc0
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90000db7b98 R08: ffff8880b9133d7f R09: 1ffff110172267af
R10: dffffc0000000000 R11: ffffed10172267b0 R12: 0000000000000c00
R13: ffff88807db8d0d8 R14: ffff8881433ffe08 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002000 CR3: 000000002b4e8000 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+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>

Crashes (17):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/22 08:29 linux-5.15.y 0eb903b5b519 1e72964b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
2026/09/13 00:31 linux-5.15.y 0996e0926f6b 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
2026/09/11 04:48 linux-5.15.y 0996e0926f6b 1fe56c0a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
2026/09/09 23:48 linux-5.15.y 0996e0926f6b 4e8b1cc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
2026/09/09 05:25 linux-5.15.y 0996e0926f6b 8387c273 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
2026/09/07 22:02 linux-5.15.y 0996e0926f6b 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
2026/08/31 17:34 linux-5.15.y 28c35638ec51 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
2026/08/30 16:54 linux-5.15.y 28c35638ec51 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
2026/08/30 14:39 linux-5.15.y 28c35638ec51 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
2026/08/30 13:51 linux-5.15.y 28c35638ec51 2f52988a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
2026/08/30 12:53 linux-5.15.y 28c35638ec51 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
2026/08/22 13:51 linux-5.15.y 0eb903b5b519 1e72964b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
2026/08/22 12:16 linux-5.15.y 0eb903b5b519 1e72964b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
2026/08/22 11:13 linux-5.15.y 0eb903b5b519 1e72964b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
2026/08/22 10:09 linux-5.15.y 0eb903b5b519 1e72964b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
2026/08/22 07:13 linux-5.15.y 0eb903b5b519 1e72964b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
2026/08/22 04:13 linux-5.15.y 0eb903b5b519 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in usb_stor_msg_common/usb_submit_urb
* Struck through repros no longer work on HEAD.