Re: [syzbot] [usb?] WARNING in cx231xx_send_vendor_cmd/usb_submit_urb

[syzbot]

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
WARNING in cx231xx_send_vendor_cmd/usb_submit_urb

------------[ cut here ]------------
usb 3-1: BOGUS control dir, pipe 80000380 doesn't match bRequestType c0
WARNING: drivers/usb/core/urb.c:413 at usb_submit_urb+0x1057/0x18b0 drivers/usb/core/urb.c:411, CPU#1: syz.0.17/6418
Modules linked in:
CPU: 1 UID: 0 PID: 6418 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:usb_submit_urb+0x1100/0x18b0 drivers/usb/core/urb.c:411
Code: b8 00 00 00 00 00 fc ff df 41 0f b6 04 04 84 c0 0f 85 b2 05 00 00 45 0f b6 45 00 48 8b 3c 24 48 8b 74 24 18 4c 89 f2 44 89 f9 <67> 48 0f b9 3a 48 bd 00 00 00 00 00 fc ff df e9 ba f2 ff ff 44 89
RSP: 0018:ffffc9000348f4f8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888034a58000 RCX: 0000000080000380
RDX: ffff88802a48a140 RSI: ffffffff8cc51920 RDI: ffffffff9087d200
RBP: dffffc0000000000 R08: 00000000000000c0 R09: 0000000000000000
R10: ffffc9000348f5e0 R11: fffff52000691ec8 R12: 1ffff1100694aef0
R13: ffff888034a57780 R14: ffff88802a48a140 R15: 0000000080000380
FS:  00007f7564cae6c0(0000) GS:ffff888124dd6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff16569d24 CR3: 0000000072d90000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 usb_start_wait_urb+0x13f/0x5b0 drivers/usb/core/message.c:62
 usb_internal_control_msg drivers/usb/core/message.c:117 [inline]
 usb_control_msg+0x234/0x3e0 drivers/usb/core/message.c:167
 __usb_control_msg+0xf9/0x3f0 drivers/media/usb/cx231xx/cx231xx-core.c:249
 cx231xx_send_vendor_cmd+0x553/0x760 drivers/media/usb/cx231xx/cx231xx-core.c:-1
 cx231xx_send_usb_command+0x2e2/0x500 drivers/media/usb/cx231xx/cx231xx-core.c:205
 cx231xx_i2c_recv_bytes drivers/media/usb/cx231xx/cx231xx-i2c.c:-1 [inline]
 cx231xx_i2c_xfer+0xd60/0x2a90 drivers/media/usb/cx231xx/cx231xx-i2c.c:386
 __i2c_transfer+0x7bf/0x1fe0 drivers/i2c/i2c-core-base.c:-1
 i2c_transfer+0x1cb/0x2d0 drivers/i2c/i2c-core-base.c:2350
 i2c_transfer_buffer_flags+0x10d/0x1a0 drivers/i2c/i2c-core-base.c:2378
 i2c_master_recv include/linux/i2c.h:79 [inline]
 i2cdev_read+0x10d/0x250 drivers/i2c/i2c-dev.c:155
 vfs_read+0x213/0xa80 fs/read_write.c:572
 ksys_read+0x150/0x270 fs/read_write.c:716
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7563d9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7564cae028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f7564025fa0 RCX: 00007f7563d9e159
RDX: 0000000000000700 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f7563e35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7564026038 R14: 00007f7564025fa0 R15: 00007ffe7bbdb788
 </TASK>
----------------
Code disassembly (best guess):
   0:	b8 00 00 00 00       	mov    $0x0,%eax
   5:	00 fc                	add    %bh,%ah
   7:	ff                   	lcall  (bad)
   8:	df 41 0f             	filds  0xf(%rcx)
   b:	b6 04                	mov    $0x4,%dh
   d:	04 84                	add    $0x84,%al
   f:	c0 0f 85             	rorb   $0x85,(%rdi)
  12:	b2 05                	mov    $0x5,%dl
  14:	00 00                	add    %al,(%rax)
  16:	45 0f b6 45 00       	movzbl 0x0(%r13),%r8d
  1b:	48 8b 3c 24          	mov    (%rsp),%rdi
  1f:	48 8b 74 24 18       	mov    0x18(%rsp),%rsi
  24:	4c 89 f2             	mov    %r14,%rdx
  27:	44 89 f9             	mov    %r15d,%ecx
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	48 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%rbp
  36:	fc ff df
  39:	e9 ba f2 ff ff       	jmp    0xfffff2f8
  3e:	44                   	rex.R
  3f:	89                   	.byte 0x89


Tested on:

commit:         df290809 Linux 7.3-rc2
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=1607e749580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=5e4e3a0e188a497e
dashboard link: https://syzkaller.appspot.com/bug?extid=ddccc0c0dbc0a38ffccb
compiler:       Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8

Note: no patches were applied.