Oops: general protection fault, probably for non-canonical address 0xdffffc0000000019: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x00000000000000c8-0x00000000000000cf]
CPU: 0 UID: 0 PID: 8579 Comm: syz.0.505 Not tainted 6.16.0-rc4-syzkaller-00049-gb4911fb0b060 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:581 [inline]
RIP: 0010:__mutex_lock+0x14f/0xb90 kernel/locking/mutex.c:747
Code: d0 7c 08 84 d2 0f 85 ab 07 00 00 8b 35 fa 19 5a 0f 85 f6 75 29 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 60 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 93 07 00 00 48 3b 5b 60 0f 85 e0 01 00 00 bf 01
RSP: 0018:ffffc90005807800 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000068 RCX: 1ffffffff35b8a08
RDX: 0000000000000019 RSI: 0000000000000000 RDI: 00000000000000c8
RBP: ffffc90005807940 R08: ffffffff87f12d85 R09: 0000000000000000
R10: ffffc90005807958 R11: 0000000000000001 R12: dffffc0000000000
R13: ffffc90005807880 R14: 0000000000000000 R15: 1ffff92000b00f0a
FS:  00007f57193e26c0(0000) GS:ffff888124752000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c34f704 CR3: 0000000012738000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 dvb_usbv2_generic_write+0x25/0x50 drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c:77
 mxl111sf_ctrl_msg+0x215/0x300 drivers/media/usb/dvb-usb-v2/mxl111sf.c:73
 mxl111sf_write_reg+0x95/0x170 drivers/media/usb/dvb-usb-v2/mxl111sf.c:123
 mxl111sf_i2c_start+0x6e/0x280 drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:130
 mxl111sf_i2c_sw_xfer_msg drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:265 [inline]
 mxl111sf_i2c_xfer+0x1e9d/0x3be0 drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:813
 __i2c_transfer+0x6b3/0x2190 drivers/i2c/i2c-core-base.c:2258
 i2c_transfer drivers/i2c/i2c-core-base.c:2314 [inline]
 i2c_transfer+0x1da/0x380 drivers/i2c/i2c-core-base.c:2290
 i2cdev_ioctl_rdwr+0x373/0x710 drivers/i2c/i2c-dev.c:306
 i2cdev_ioctl+0x5ff/0x820 drivers/i2c/i2c-dev.c:467
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl fs/ioctl.c:893 [inline]
 __x64_sys_ioctl+0x18b/0x210 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f571858e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f57193e2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f57187b5fa0 RCX: 00007f571858e929
RDX: 0000200000000080 RSI: 0000000000000707 RDI: 0000000000000003
RBP: 00007f5718610b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f57187b5fa0 R15: 00007ffd1a001838
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:581 [inline]
RIP: 0010:__mutex_lock+0x14f/0xb90 kernel/locking/mutex.c:747
Code: d0 7c 08 84 d2 0f 85 ab 07 00 00 8b 35 fa 19 5a 0f 85 f6 75 29 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 60 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 93 07 00 00 48 3b 5b 60 0f 85 e0 01 00 00 bf 01
RSP: 0018:ffffc90005807800 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000068 RCX: 1ffffffff35b8a08
RDX: 0000000000000019 RSI: 0000000000000000 RDI: 00000000000000c8
RBP: ffffc90005807940 R08: ffffffff87f12d85 R09: 0000000000000000
R10: ffffc90005807958 R11: 0000000000000001 R12: dffffc0000000000
R13: ffffc90005807880 R14: 0000000000000000 R15: 1ffff92000b00f0a
FS:  00007f57193e26c0(0000) GS:ffff888124752000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200001000000 CR3: 0000000012738000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	d0 7c 08 84          	sarb   -0x7c(%rax,%rcx,1)
   4:	d2 0f                	rorb   %cl,(%rdi)
   6:	85 ab 07 00 00 8b    	test   %ebp,-0x74fffff9(%rbx)
   c:	35 fa 19 5a 0f       	xor    $0xf5a19fa,%eax
  11:	85 f6                	test   %esi,%esi
  13:	75 29                	jne    0x3e
  15:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1c:	fc ff df
  1f:	48 8d 7b 60          	lea    0x60(%rbx),%rdi
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 93 07 00 00    	jne    0x7c7
  34:	48 3b 5b 60          	cmp    0x60(%rbx),%rbx
  38:	0f 85 e0 01 00 00    	jne    0x21e
  3e:	bf                   	.byte 0xbf
  3f:	01                   	.byte 0x1