dvb-usb: bulk message failed: -22 (1/0)
dw2102: i2c transfer failed.
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 0 UID: 0 PID: 16496 Comm: syz.7.2590 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:su3000_i2c_transfer+0x2e3/0x1040 drivers/media/usb/dvb-usb/dw2102.c:752
Code: 0f b6 18 49 83 c7 08 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 5a 1a 3c fa 4d 8b 37 49 ff c6 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 e6 08 00 00 41 88 1e 48 8b 44 24 48 42
RSP: 0018:ffffc9000c03f8e8 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: c54cc72e9a999300
RDX: ffffc9000c809000 RSI: 0000000000003d7f RDI: 0000000000003d80
RBP: 0000000000000000 R08: ffffc9000c03f607 R09: 1ffff92001807ec0
R10: dffffc0000000000 R11: fffff52001807ec1 R12: 0000000000000002
R13: dffffc0000000000 R14: 0000000000000011 R15: ffff88807f368cc8
FS:  0000000000000000(0000) GS:ffff888125c13000(0063) knlGS:00000000f5476b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000080086018 CR3: 0000000030514000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __i2c_transfer+0x871/0x2170 drivers/i2c/i2c-core-base.c:-1
 i2c_transfer+0x25b/0x3a0 drivers/i2c/i2c-core-base.c:2320
 i2cdev_ioctl_rdwr+0x460/0x740 drivers/i2c/i2c-dev.c:306
 compat_i2cdev_ioctl+0x5a8/0x5c0 drivers/i2c/i2c-dev.c:575
 __do_compat_sys_ioctl fs/ioctl.c:696 [inline]
 __se_compat_sys_ioctl fs/ioctl.c:639 [inline]
 __ia32_compat_sys_ioctl+0x540/0x840 fs/ioctl.c:639
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb6/0x2b0 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:331
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7f82539
Code: 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f547655c EFLAGS: 00000206 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000000707
RDX: 0000000080000080 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:su3000_i2c_transfer+0x2e3/0x1040 drivers/media/usb/dvb-usb/dw2102.c:752
Code: 0f b6 18 49 83 c7 08 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 5a 1a 3c fa 4d 8b 37 49 ff c6 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 e6 08 00 00 41 88 1e 48 8b 44 24 48 42
RSP: 0018:ffffc9000c03f8e8 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: c54cc72e9a999300
RDX: ffffc9000c809000 RSI: 0000000000003d7f RDI: 0000000000003d80
RBP: 0000000000000000 R08: ffffc9000c03f607 R09: 1ffff92001807ec0
R10: dffffc0000000000 R11: fffff52001807ec1 R12: 0000000000000002
R13: dffffc0000000000 R14: 0000000000000011 R15: ffff88807f368cc8
FS:  0000000000000000(0000) GS:ffff888125d13000(0063) knlGS:00000000f5476b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000350f4ff8 CR3: 0000000030514000 CR4: 00000000003526f0
DR0: 0000000000000006 DR1: 0000000000000000 DR2: 0000000000000080
DR3: 000000000f000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	0f b6 18             	movzbl (%rax),%ebx
   3:	49 83 c7 08          	add    $0x8,%r15
   7:	4c 89 f8             	mov    %r15,%rax
   a:	48 c1 e8 03          	shr    $0x3,%rax
   e:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  13:	74 08                	je     0x1d
  15:	4c 89 ff             	mov    %r15,%rdi
  18:	e8 5a 1a 3c fa       	call   0xfa3c1a77
  1d:	4d 8b 37             	mov    (%r15),%r14
  20:	49 ff c6             	inc    %r14
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 e6 08 00 00    	jne    0x91d
  37:	41 88 1e             	mov    %bl,(%r14)
  3a:	48 8b 44 24 48       	mov    0x48(%rsp),%rax
  3f:	42                   	rex.X