Oops: general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 0 UID: 0 PID: 6018 Comm: kworker/0:6 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: events __usb_queue_reset_device
RIP: 0010:usb_gadget_udc_reset+0x29/0xb0 drivers/usb/gadget/udc/core.c:1191
Code: 90 f3 0f 1e fa 41 57 41 56 53 49 89 f6 48 89 fb 49 bf 00 00 00 00 00 fc ff df e8 02 f0 c2 fa 49 83 c6 40 4c 89 f0 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 f7 e8 f8 29 22 fb 4d 8b 1e 48 89 df 41
RSP: 0018:ffffc900056b7338 EFLAGS: 00010202
RAX: 0000000000000008 RBX: ffff888145b90c40 RCX: ffff88802e2d0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88803a390164 R08: ffffffff8f1d5137 R09: 1ffffffff1e3aa26
R10: dffffc0000000000 R11: fffffbfff1e3aa27 R12: ffff888145b90c40
R13: 1ffff11028be6ea1 R14: 0000000000000040 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881268c1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555593a6b608 CR3: 000000003b08e000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 set_link_state+0x80b/0x1220 drivers/usb/gadget/udc/dummy_hcd.c:469
 dummy_hub_control+0xcc0/0x1760 drivers/usb/gadget/udc/dummy_hcd.c:2327
 rh_call_control drivers/usb/core/hcd.c:656 [inline]
 rh_urb_enqueue drivers/usb/core/hcd.c:821 [inline]
 usb_hcd_submit_urb+0xde9/0x1a80 drivers/usb/core/hcd.c:1542
 usb_start_wait_urb+0x114/0x4c0 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
 set_port_feature drivers/usb/core/hub.c:470 [inline]
 hub_port_reset+0x390/0x1740 drivers/usb/core/hub.c:3082
 hub_port_init+0x2b0/0x2800 drivers/usb/core/hub.c:4938
 usb_reset_and_verify_device+0x4cd/0x1a80 drivers/usb/core/hub.c:6214
 usb_reset_device+0x552/0xae0 drivers/usb/core/hub.c:6409
 __usb_queue_reset_device+0x73/0xa0 drivers/usb/core/message.c:1904
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:usb_gadget_udc_reset+0x29/0xb0 drivers/usb/gadget/udc/core.c:1191
Code: 90 f3 0f 1e fa 41 57 41 56 53 49 89 f6 48 89 fb 49 bf 00 00 00 00 00 fc ff df e8 02 f0 c2 fa 49 83 c6 40 4c 89 f0 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 f7 e8 f8 29 22 fb 4d 8b 1e 48 89 df 41
RSP: 0018:ffffc900056b7338 EFLAGS: 00010202
RAX: 0000000000000008 RBX: ffff888145b90c40 RCX: ffff88802e2d0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88803a390164 R08: ffffffff8f1d5137 R09: 1ffffffff1e3aa26
R10: dffffc0000000000 R11: fffffbfff1e3aa27 R12: ffff888145b90c40
R13: 1ffff11028be6ea1 R14: 0000000000000040 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881268c1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555593a6b608 CR3: 000000003b08e000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	f3 0f 1e fa          	endbr64
   5:	41 57                	push   %r15
   7:	41 56                	push   %r14
   9:	53                   	push   %rbx
   a:	49 89 f6             	mov    %rsi,%r14
   d:	48 89 fb             	mov    %rdi,%rbx
  10:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
  17:	fc ff df
  1a:	e8 02 f0 c2 fa       	call   0xfac2f021
  1f:	49 83 c6 40          	add    $0x40,%r14
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 f7             	mov    %r14,%rdi
  34:	e8 f8 29 22 fb       	call   0xfb222a31
  39:	4d 8b 1e             	mov    (%r14),%r11
  3c:	48 89 df             	mov    %rbx,%rdi
  3f:	41                   	rex.B