udc-core: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_probe_driver returned -16
general protection fault, probably for non-canonical address 0xdffffc0000000019: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000000c8-0x00000000000000cf]
CPU: 0 PID: 26030 Comm: syz.0.4709 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__mutex_lock_common+0x10c/0x2400 kernel/locking/mutex.c:575
Code: 03 42 0f b6 04 28 84 c0 0f 85 50 1c 00 00 4c 8d b4 24 e0 00 00 00 83 3d 81 d2 65 0c 00 75 29 48 8d 7b 60 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 48 9b f4 f7 48 39 5b 60 4c 8d b4 24 e0 00
RSP: 0018:ffffc90002ebf380 EFLAGS: 00010202
RAX: 0000000000000019 RBX: 0000000000000068 RCX: ffffffff962f7f03
RDX: ffff888027a91dc0 RSI: ffffffff8a2b3e80 RDI: 00000000000000c8
RBP: ffffc90002ebf508 R08: ffffffff8696cbf2 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100f3c562c R12: 0000000000000000
R13: dffffc0000000000 R14: ffffc90002ebf460 R15: 0000000000000000
FS:  00007f59723946c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c412cb2 CR3: 0000000073a3f000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 dvb_usbv2_generic_write+0x22/0x50 drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c:77
 mxl111sf_ctrl_msg+0x12a/0x260 drivers/media/usb/dvb-usb-v2/mxl111sf.c:73
 mxl111sf_write_reg+0xa6/0x180 drivers/media/usb/dvb-usb-v2/mxl111sf.c:123
 mxl111sf_i2c_start drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:130 [inline]
 mxl111sf_i2c_sw_xfer_msg drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:-1 [inline]
 mxl111sf_i2c_xfer+0x460/0x5030 drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:813
 __i2c_transfer+0x88d/0x2090 drivers/i2c/i2c-core-base.c:-1
 i2c_transfer+0x25d/0x3a0 drivers/i2c/i2c-core-base.c:2363
 i2cdev_ioctl_rdwr+0x3dc/0x6c0 drivers/i2c/i2c-dev.c:297
 i2cdev_ioctl+0x610/0x7b0 drivers/i2c/i2c-dev.c:458
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f597413c159
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:00007f5972394028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f59743c3fa0 RCX: 00007f597413c159
RDX: 0000200000000080 RSI: 0000000000000707 RDI: 0000000000000009
RBP: 00007f59741d306b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f59743c4038 R14: 00007f59743c3fa0 R15: 00007fffd05a3558
 </TASK>
Modules linked in:
---[ end trace 44bd3271efcb2a57 ]---
RIP: 0010:__mutex_lock_common+0x10c/0x2400 kernel/locking/mutex.c:575
Code: 03 42 0f b6 04 28 84 c0 0f 85 50 1c 00 00 4c 8d b4 24 e0 00 00 00 83 3d 81 d2 65 0c 00 75 29 48 8d 7b 60 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 48 9b f4 f7 48 39 5b 60 4c 8d b4 24 e0 00
RSP: 0018:ffffc90002ebf380 EFLAGS: 00010202
RAX: 0000000000000019 RBX: 0000000000000068 RCX: ffffffff962f7f03
RDX: ffff888027a91dc0 RSI: ffffffff8a2b3e80 RDI: 00000000000000c8
RBP: ffffc90002ebf508 R08: ffffffff8696cbf2 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100f3c562c R12: 0000000000000000
R13: dffffc0000000000 R14: ffffc90002ebf460 R15: 0000000000000000
FS:  00007f59723946c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005626f8bc9138 CR3: 0000000073a3f000 CR4: 00000000003506f0
----------------
Code disassembly (best guess):
   0:	03 42 0f             	add    0xf(%rdx),%eax
   3:	b6 04                	mov    $0x4,%dh
   5:	28 84 c0 0f 85 50 1c 	sub    %al,0x1c50850f(%rax,%rax,8)
   c:	00 00                	add    %al,(%rax)
   e:	4c 8d b4 24 e0 00 00 	lea    0xe0(%rsp),%r14
  15:	00
  16:	83 3d 81 d2 65 0c 00 	cmpl   $0x0,0xc65d281(%rip)        # 0xc65d29e
  1d:	75 29                	jne    0x48
  1f:	48 8d 7b 60          	lea    0x60(%rbx),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 05                	je     0x36
  31:	e8 48 9b f4 f7       	call   0xf7f49b7e
  36:	48 39 5b 60          	cmp    %rbx,0x60(%rbx)
  3a:	4c                   	rex.WR
  3b:	8d                   	.byte 0x8d
  3c:	b4 24                	mov    $0x24,%ah
  3e:	e0 00                	loopne 0x40