general protection fault, probably for non-canonical address 0xdffffc0000000009: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000048-0x000000000000004f]
CPU: 1 PID: 1632 Comm: syz.0.348 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:dummy_queue+0x1b7/0x870 drivers/usb/gadget/udc/dummy_hcd.c:712
Code: fc ff df 80 3c 08 00 74 08 4c 89 e7 e8 42 39 92 fe 4d 8b 24 24 49 83 c4 48 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 80 05 00 00 45 8b 24 24 44 89 e6 83 e6 02
RSP: 0018:ffffc90000e979c0 EFLAGS: 00010206
RAX: 0000000000000009 RBX: ffff88810bc8de10 RCX: dffffc0000000000
RDX: ffff888110f30000 RSI: 0000000000000003 RDI: 0000000000000005
RBP: ffffc90000e97a38 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520001d2f3c R12: 0000000000000048
R13: ffff88810bc8de00 R14: 1ffff11021791bc0 R15: ffff888100bccc90
FS:  00007f9e9aad86c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34610ff8 CR3: 000000012564b000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 usb_ep_queue+0xce/0x210 drivers/usb/gadget/udc/core.c:290
 raw_process_ep_io+0x5cc/0xa00 drivers/usb/gadget/legacy/raw_gadget.c:1060
 raw_ioctl_ep_write drivers/usb/gadget/legacy/raw_gadget.c:1100 [inline]
 raw_ioctl+0x2057/0x3040 drivers/usb/gadget/legacy/raw_gadget.c:1273
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x121/0x1a0 fs/ioctl.c:739
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:739
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f9e9c07ecab
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007f9e9aad6f60 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f9e9c07ecab
RDX: 00007f9e9aad6fe0 RSI: 0000000040085507 RDI: 0000000000000006
RBP: 0000000000000006 R08: 00007f9e9c431320 R09: 0000000000000000
R10: 0000000000000006 R11: 0000000000000246 R12: 00002000000000c0
R13: 000000000000000c R14: 00007f9e9c306fa0 R15: 00007ffd23442d38
Modules linked in:
---[ end trace 46429ccdb61cc64b ]---
RIP: 0010:dummy_queue+0x1b7/0x870 drivers/usb/gadget/udc/dummy_hcd.c:712
Code: fc ff df 80 3c 08 00 74 08 4c 89 e7 e8 42 39 92 fe 4d 8b 24 24 49 83 c4 48 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 80 05 00 00 45 8b 24 24 44 89 e6 83 e6 02
RSP: 0018:ffffc90000e979c0 EFLAGS: 00010206
RAX: 0000000000000009 RBX: ffff88810bc8de10 RCX: dffffc0000000000
RDX: ffff888110f30000 RSI: 0000000000000003 RDI: 0000000000000005
RBP: ffffc90000e97a38 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520001d2f3c R12: 0000000000000048
R13: ffff88810bc8de00 R14: 1ffff11021791bc0 R15: ffff888100bccc90
FS:  00007f9e9aad86c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000102030 CR3: 000000012564b000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	fc                   	cld
   1:	ff                   	lcall  (bad)
   2:	df 80 3c 08 00 74    	filds  0x7400083c(%rax)
   8:	08 4c 89 e7          	or     %cl,-0x19(%rcx,%rcx,4)
   c:	e8 42 39 92 fe       	call   0xfe923953
  11:	4d 8b 24 24          	mov    (%r12),%r12
  15:	49 83 c4 48          	add    $0x48,%r12
  19:	4c 89 e0             	mov    %r12,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 80 05 00 00    	jne    0x5b6
  36:	45 8b 24 24          	mov    (%r12),%r12d
  3a:	44 89 e6             	mov    %r12d,%esi
  3d:	83 e6 02             	and    $0x2,%esi