[syzbot] [usb?] WARNING in usb_start_wait_urb

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 7d31f578f323 Add linux-next specific files for 20251128
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=119c8192580000
kernel config: https://syzkaller.appspot.com/x/.config?x=ec890b8333fce099
dashboard link: https://syzkaller.appspot.com/bug?extid=e6a50a2e7cbb4f775d04
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17bdbcb4580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1413b0c2580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/9bcc6eb60940/disk-7d31f578.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/895bc1bfae48/vmlinux-7d31f578.xz
kernel image: https://storage.googleapis.com/syzbot-assets/48f15e4679f3/bzImage-7d31f578.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e6a50a...@syzkaller.appspotmail.com

------------[ cut here ]------------
usb 1-1: BOGUS control dir, pipe 80000280 doesn't match bRequestType c0
WARNING: drivers/usb/core/urb.c:414 at 0x0, CPU#0: syz.0.17/6025
Modules linked in:
CPU: 0 UID: 0 PID: 6025 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:usb_submit_urb+0x111c/0x18d0 drivers/usb/core/urb.c:412
Code: b8 00 00 00 00 00 fc ff df 0f b6 44 05 00 84 c0 0f 85 a7 05 00 00 45 0f b6 45 00 48 8b 3c 24 48 8b 74 24 20 4c 89 fa 44 89 f1 <67> 48 0f b9 3a 49 bf 00 00 00 00 00 fc ff df e9 b7 f2 ff ff 89 e9
RSP: 0018:ffffc90003487820 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8880726bb700 RCX: 0000000080000280
RDX: ffff888071228200 RSI: ffffffff8c3575e0 RDI: ffffffff8fcf8fd0
RBP: 1ffff1100e666078 R08: 00000000000000c0 R09: 0000000000000000
R10: ffffc90003487920 R11: fffff52000690f30 R12: ffff888076835100
R13: ffff8880733303c0 R14: 0000000080000280 R15: ffff888071228200
FS: 00007fe073fd66c0(0000) GS:ffff888125a03000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001480 CR3: 000000007ecd2000 CR4: 00000000003526f0
Call Trace:
<TASK>
usb_start_wait_urb+0x115/0x4f0 drivers/usb/core/message.c:59
usb_internal_control_msg drivers/usb/core/message.c:103 [inline]
usb_control_msg+0x232/0x3e0 drivers/usb/core/message.c:154
dib0700_ctrl_rd drivers/media/usb/dvb-usb/dib0700_core.c:95 [inline]
dib0700_i2c_xfer_legacy drivers/media/usb/dvb-usb/dib0700_core.c:315 [inline]
dib0700_i2c_xfer+0xba7/0xf70 drivers/media/usb/dvb-usb/dib0700_core.c:361
__i2c_transfer+0x871/0x2110 drivers/i2c/i2c-core-base.c:-1
i2c_transfer+0x25b/0x3a0 drivers/i2c/i2c-core-base.c:2317
i2cdev_ioctl_rdwr+0x460/0x740 drivers/i2c/i2c-dev.c:306
i2cdev_ioctl+0x64b/0x820 drivers/i2c/i2c-dev.c:467
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe07318f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe073fd6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe0733e5fa0 RCX: 00007fe07318f749
RDX: 0000200000000200 RSI: 0000000000000707 RDI: 0000000000000004
RBP: 00007fe073213f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe0733e6038 R14: 00007fe0733e5fa0 R15: 00007ffe02ef2178
</TASK>
----------------
Code disassembly (best guess):
0: b8 00 00 00 00 mov $0x0,%eax
5: 00 fc add %bh,%ah
7: ff (bad)
8: df 0f fisttps (%rdi)
a: b6 44 mov $0x44,%dh
c: 05 00 84 c0 0f add $0xfc08400,%eax
11: 85 a7 05 00 00 45 test %esp,0x45000005(%rdi)
17: 0f b6 45 00 movzbl 0x0(%rbp),%eax
1b: 48 8b 3c 24 mov (%rsp),%rdi
1f: 48 8b 74 24 20 mov 0x20(%rsp),%rsi
24: 4c 89 fa mov %r15,%rdx
27: 44 89 f1 mov %r14d,%ecx
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15
36: fc ff df
39: e9 b7 f2 ff ff jmp 0xfffff2f5
3e: 89 e9 mov %ebp,%ecx


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup