BUG: kernel NULL pointer dereference, address: 0000000000000740
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 173260067 P4D 173260067 PUD 0 
Oops: 0000 [#1] SMP
CPU: 1 PID: 4225 Comm: syz.4.95 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:ft260_i2c_xfer+0x2f/0x1f0 drivers/hid/hid-ft260.c:561
Code: 55 41 54 55 53 48 83 ec 30 4c 8b af a8 01 00 00 48 89 34 24 31 f6 89 54 24 0c 65 48 8b 04 25 28 00 00 00 48 89 44 24 28 31 c0 <49> 8b 9d 40 07 00 00 49 8d 85 a0 07 00 00 48 89 c7 48 89 44 24 10
RSP: 0018:ffffc900098afdc8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff8881781c4028
RBP: ffff8881781c4028 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000080000 R11: ffffffff83b52766 R12: 0000000000000001
R13: 0000000000000000 R14: ffff88817e65dea0 R15: 00000000ffffb0a7
FS:  00007fe605ea76c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000740 CR3: 0000000173209000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __i2c_transfer+0x17b/0x520 drivers/i2c/i2c-core-base.c:2274
 i2c_transfer drivers/i2c/i2c-core-base.c:2330 [inline]
 i2c_transfer+0x3a/0x70 drivers/i2c/i2c-core-base.c:2306
 i2cdev_ioctl_rdwr+0xf4/0x230 drivers/i2c/i2c-dev.c:297
 i2cdev_ioctl+0x15e/0x2a0 drivers/i2c/i2c-dev.c:458
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x7b/0xb0 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x33/0x80 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fe606837be9
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:00007fe605ea7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe606a5efa0 RCX: 00007fe606837be9
RDX: 0000200000002580 RSI: 0000000000000707 RDI: 0000000000000007
RBP: 00007fe6068bae19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe606a5f038 R14: 00007fe606a5efa0 R15: 00007ffe9a99b168
 </TASK>
Modules linked in:
CR2: 0000000000000740
---[ end trace 8fc16521c9d1e168 ]---
RIP: 0010:ft260_i2c_xfer+0x2f/0x1f0 drivers/hid/hid-ft260.c:561
Code: 55 41 54 55 53 48 83 ec 30 4c 8b af a8 01 00 00 48 89 34 24 31 f6 89 54 24 0c 65 48 8b 04 25 28 00 00 00 48 89 44 24 28 31 c0 <49> 8b 9d 40 07 00 00 49 8d 85 a0 07 00 00 48 89 c7 48 89 44 24 10
RSP: 0018:ffffc900098afdc8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff8881781c4028
RBP: ffff8881781c4028 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000080000 R11: ffffffff83b52766 R12: 0000000000000001
R13: 0000000000000000 R14: ffff88817e65dea0 R15: 00000000ffffb0a7
FS:  00007fe605ea76c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000740 CR3: 0000000173209000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	55                   	push   %rbp
   1:	41 54                	push   %r12
   3:	55                   	push   %rbp
   4:	53                   	push   %rbx
   5:	48 83 ec 30          	sub    $0x30,%rsp
   9:	4c 8b af a8 01 00 00 	mov    0x1a8(%rdi),%r13
  10:	48 89 34 24          	mov    %rsi,(%rsp)
  14:	31 f6                	xor    %esi,%esi
  16:	89 54 24 0c          	mov    %edx,0xc(%rsp)
  1a:	65 48 8b 04 25 28 00 	mov    %gs:0x28,%rax
  21:	00 00
  23:	48 89 44 24 28       	mov    %rax,0x28(%rsp)
  28:	31 c0                	xor    %eax,%eax
* 2a:	49 8b 9d 40 07 00 00 	mov    0x740(%r13),%rbx <-- trapping instruction
  31:	49 8d 85 a0 07 00 00 	lea    0x7a0(%r13),%rax
  38:	48 89 c7             	mov    %rax,%rdi
  3b:	48 89 44 24 10       	mov    %rax,0x10(%rsp)