[syzbot] WARNING in usb_composite_setup_continue

[syzbot] WARNING in usb_composite_setup_continue

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit:    3d6d817622b0 Merge tag 'scsi-fixes' of git://git.kernel.or..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1053f479580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c44651ea7dd2f307
dashboard link: https://syzkaller.appspot.com/bug?extid=a83a5a1ba9ff57935171
compiler:       gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16415149580000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a83a5a1ba9ff57935171@syzkaller.appspotmail.com

------------[ cut here ]------------
usb_composite_setup_continue: Unexpected call
WARNING: drivers/usb/gadget/composite.c:2743 at usb_composite_setup_continue+0x2be/0x3a0 drivers/usb/gadget/composite.c:2743, CPU#1: file-storage/5932
Modules linked in:
CPU: 1 UID: 0 PID: 5932 Comm: file-storage Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:usb_composite_setup_continue+0x2c5/0x3a0 drivers/usb/gadget/composite.c:2743
Code: e5 40 89 ee e8 7c fa 3d fa 40 84 ed 0f 84 35 fe ff ff e9 ec 74 87 f9 e8 59 00 3e fa 48 8d 3d c2 b9 62 09 48 c7 c6 a0 27 b7 8c <67> 48 0f b9 3a e9 d6 fd ff ff e8 3c 00 3e fa 48 89 da 48 b8 00 00
RSP: 0018:ffffc9000204fc88 EFLAGS: 00010093
RAX: 0000000000000000 RBX: ffff888021bce528 RCX: ffffffff87cc7103
RDX: ffff888079b50000 RSI: ffffffff8cb727a0 RDI: ffffffff912f2cf0
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000293
R13: ffff888021bce6c8 R14: ffff88801e31c610 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888123eec000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4279cc4ff8 CR3: 000000007215b000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 handle_exception drivers/usb/gadget/function/f_mass_storage.c:2551 [inline]
 fsg_main_thread+0x16ec/0x88e0 drivers/usb/gadget/function/f_mass_storage.c:2589
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess):
   0:	e5 40                	in     $0x40,%eax
   2:	89 ee                	mov    %ebp,%esi
   4:	e8 7c fa 3d fa       	call   0xfa3dfa85
   9:	40 84 ed             	test   %bpl,%bpl
   c:	0f 84 35 fe ff ff    	je     0xfffffe47
  12:	e9 ec 74 87 f9       	jmp    0xf9877503
  17:	e8 59 00 3e fa       	call   0xfa3e0075
  1c:	48 8d 3d c2 b9 62 09 	lea    0x962b9c2(%rip),%rdi        # 0x962b9e5
  23:	48 c7 c6 a0 27 b7 8c 	mov    $0xffffffff8cb727a0,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 d6 fd ff ff       	jmp    0xfffffe0a
  34:	e8 3c 00 3e fa       	call   0xfa3e0075
  39:	48 89 da             	mov    %rbx,%rdx
  3c:	48                   	rex.W
  3d:	b8                   	.byte 0xb8


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