Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 3 UID: 0 PID: 11463 Comm: syz.1.1268 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:usb_endpoint_xfer_isoc include/uapi/linux/usb/ch9.h:571 [inline]
RIP: 0010:uvc_video_prep_requests drivers/usb/gadget/function/uvc_video.c:508 [inline]
RIP: 0010:uvc_video_alloc_requests drivers/usb/gadget/function/uvc_video.c:559 [inline]
RIP: 0010:uvcg_video_enable+0x12d/0xf80 drivers/usb/gadget/function/uvc_video.c:784
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b7 0d 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 18 48 8d 7d 03 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 e5 0d 00 00
RSP: 0018:ffffc9000574fb08 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff888025b46200 RCX: ffffc9000c402000
RDX: 0000000000000000 RSI: ffffffff87e17955 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffff888013cee8f0 R15: ffff888013cee840
FS:  0000000000000000(0000) GS:ffff888096ef3000(0063) knlGS:00000000f540db40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7390050 CR3: 0000000075784000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 uvc_v4l2_streamon+0x9f/0x130 drivers/usb/gadget/function/uvc_v4l2.c:531
 __video_do_ioctl+0xb2a/0xdf0 drivers/media/v4l2-core/v4l2-ioctl.c:3133
 video_usercopy+0x3d3/0x14c0 drivers/media/v4l2-core/v4l2-ioctl.c:3475
 v4l2_ioctl+0x1bd/0x250 drivers/media/v4l2-core/v4l2-dev.c:366
 v4l2_compat_ioctl32+0x20f/0x2d0 drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1197
 __do_compat_sys_ioctl fs/ioctl.c:695 [inline]
 __se_compat_sys_ioctl fs/ioctl.c:638 [inline]
 __ia32_compat_sys_ioctl+0x2cf/0x360 fs/ioctl.c:638
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xe7/0x970 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:332
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf701efec
Code: Unable to access opcode bytes at 0xf701efc2.
RSP: 002b:00000000f540d50c EFLAGS: 00000292 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 0000000040045612
RDX: 0000000080000080 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:usb_endpoint_xfer_isoc include/uapi/linux/usb/ch9.h:571 [inline]
RIP: 0010:uvc_video_prep_requests drivers/usb/gadget/function/uvc_video.c:508 [inline]
RIP: 0010:uvc_video_alloc_requests drivers/usb/gadget/function/uvc_video.c:559 [inline]
RIP: 0010:uvcg_video_enable+0x12d/0xf80 drivers/usb/gadget/function/uvc_video.c:784
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b7 0d 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 18 48 8d 7d 03 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 e5 0d 00 00
RSP: 0018:ffffc9000574fb08 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff888025b46200 RCX: ffffc9000c402000
RDX: 0000000000000000 RSI: ffffffff87e17955 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffff888013cee8f0 R15: ffff888013cee840
FS:  0000000000000000(0000) GS:ffff888096df3000(0063) knlGS:00000000f540db40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00005650acc57000 CR3: 0000000075784000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	48 89 fa             	mov    %rdi,%rdx
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   b:	0f 85 b7 0d 00 00    	jne    0xdc8
  11:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  18:	fc ff df
  1b:	48 8b 6b 18          	mov    0x18(%rbx),%rbp
  1f:	48 8d 7d 03          	lea    0x3(%rbp),%rdi
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax <-- trapping instruction
  2e:	48 89 fa             	mov    %rdi,%rdx
  31:	83 e2 07             	and    $0x7,%edx
  34:	38 d0                	cmp    %dl,%al
  36:	7f 08                	jg     0x40
  38:	84 c0                	test   %al,%al
  3a:	0f 85 e5 0d 00 00    	jne    0xe25