Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 2 UID: 0 PID: 19098 Comm: syz.4.3520 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:su3000_i2c_transfer+0x607/0xd90 drivers/media/usb/dvb-usb/dw2102.c:740
Code: ed 06 fa 48 8d 7b 08 48 89 f8 48 c1 e8 03 42 80 3c 20 00 0f 85 23 06 00 00 48 8b 5b 08 48 89 d8 48 89 da 48 c1 e8 03 83 e2 07 <42> 0f b6 04 20 38 d0 7f 08 84 c0 0f 85 f4 05 00 00 48 8b 44 24 10
RSP: 0000:ffffc90003f87bc0 EFLAGS: 00010246
RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffffc90025671000
RDX: 0000000000000000 RSI: ffffffff88013320 RDI: ffff888025fe12c8
RBP: 0000000000001900 R08: 0000000000000003 R09: 0000000000001a00
R10: 0000000000001900 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff88802ae8b502 R14: 0000000000000000 R15: ffff88802ae8b500
FS:  0000000000000000(0000) GS:ffff888097301000(0063) knlGS:00000000f5486b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f53f4da4 CR3: 000000004f7af000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __i2c_transfer+0x5e9/0x1780 drivers/i2c/i2c-core-base.c:2261
 i2c_transfer+0x15f/0x380 drivers/i2c/i2c-core-base.c:2317
 i2cdev_ioctl_rdwr+0x3ec/0x700 drivers/i2c/i2c-dev.c:306
 compat_i2cdev_ioctl+0x469/0x540 drivers/i2c/i2c-dev.c:574
 __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+0xe7/0x950 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: 0023:0xf7fc5fcc
Code: d2 74 05 c1 e8 0c 89 02 8b 5d fc 31 c0 c9 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 2e 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 58 b8
RSP: 002b:00000000f548650c EFLAGS: 00000292 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000000707
RDX: 0000000080000300 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:su3000_i2c_transfer+0x607/0xd90 drivers/media/usb/dvb-usb/dw2102.c:740
Code: ed 06 fa 48 8d 7b 08 48 89 f8 48 c1 e8 03 42 80 3c 20 00 0f 85 23 06 00 00 48 8b 5b 08 48 89 d8 48 89 da 48 c1 e8 03 83 e2 07 <42> 0f b6 04 20 38 d0 7f 08 84 c0 0f 85 f4 05 00 00 48 8b 44 24 10
RSP: 0000:ffffc90003f87bc0 EFLAGS: 00010246
RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffffc90025671000
RDX: 0000000000000000 RSI: ffffffff88013320 RDI: ffff888025fe12c8
RBP: 0000000000001900 R08: 0000000000000003 R09: 0000000000001a00
R10: 0000000000001900 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff88802ae8b502 R14: 0000000000000000 R15: ffff88802ae8b500
FS:  0000000000000000(0000) GS:ffff888097401000(0063) knlGS:00000000f5486b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000080177000 CR3: 000000004f7af000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	fa                   	cli
   1:	48 8d 7b 08          	lea    0x8(%rbx),%rdi
   5:	48 89 f8             	mov    %rdi,%rax
   8:	48 c1 e8 03          	shr    $0x3,%rax
   c:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  11:	0f 85 23 06 00 00    	jne    0x63a
  17:	48 8b 5b 08          	mov    0x8(%rbx),%rbx
  1b:	48 89 d8             	mov    %rbx,%rax
  1e:	48 89 da             	mov    %rbx,%rdx
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	83 e2 07             	and    $0x7,%edx
* 28:	42 0f b6 04 20       	movzbl (%rax,%r12,1),%eax <-- trapping instruction
  2d:	38 d0                	cmp    %dl,%al
  2f:	7f 08                	jg     0x39
  31:	84 c0                	test   %al,%al
  33:	0f 85 f4 05 00 00    	jne    0x62d
  39:	48 8b 44 24 10       	mov    0x10(%rsp),%rax