general protection fault, probably for non-canonical address 0xdffffc00000000fa: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000007d0-0x00000000000007d7]
CPU: 0 PID: 4694 Comm: syz.1.153 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:ft260_i2c_xfer+0xa7/0x650 drivers/hid/hid-ft260.c:561
Code: d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 4f 20 6c fa 48 8b 03 48 89 44 24 20 48 8d 98 d0 07 00 00 49 89 dd 49 c1 ed 03 <43> 80 7c 25 00 00 74 08 48 89 df e8 29 20 6c fa 48 89 5c 24 28 48
RSP: 0018:ffffc9000c5bfa80 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 00000000000007d0 RCX: ffff888029768000
RDX: 0000000000000000 RSI: ffff88801b908fa0 RDI: ffff88805e180028
RBP: ffffc9000c5bfb70 R08: dffffc0000000000 R09: ffffed100bc300d2
R10: ffffed100bc300d2 R11: 1ffff1100bc300d1 R12: dffffc0000000000
R13: 00000000000000fa R14: ffff88801b908fa0 R15: 1ffff920018b7f5c
FS: 000055555e70b500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002580 CR3: 00000000723cb000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__i2c_transfer+0x864/0x2060 drivers/i2c/i2c-core-base.c:-1
i2c_transfer+0x24c/0x390 drivers/i2c/i2c-core-base.c:2330
i2cdev_ioctl_rdwr+0x3da/0x6c0 drivers/i2c/i2c-dev.c:297
i2cdev_ioctl+0x5ba/0x750 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: 0033:0x7f442222bbe9
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:00007fff8b151a08 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4422452fa0 RCX: 00007f442222bbe9
RDX: 0000200000002580 RSI: 0000000000000707 RDI: 0000000000000007
RBP: 00007f44222aee19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4422452fa0 R14: 00007f4422452fa0 R15: 0000000000000003
</TASK>
Modules linked in:
---[ end trace cffa0638f1ed5d15 ]---
RIP: 0010:ft260_i2c_xfer+0xa7/0x650 drivers/hid/hid-ft260.c:561
Code: d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 4f 20 6c fa 48 8b 03 48 89 44 24 20 48 8d 98 d0 07 00 00 49 89 dd 49 c1 ed 03 <43> 80 7c 25 00 00 74 08 48 89 df e8 29 20 6c fa 48 89 5c 24 28 48
RSP: 0018:ffffc9000c5bfa80 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 00000000000007d0 RCX: ffff888029768000
RDX: 0000000000000000 RSI: ffff88801b908fa0 RDI: ffff88805e180028
RBP: ffffc9000c5bfb70 R08: dffffc0000000000 R09: ffffed100bc300d2
R10: ffffed100bc300d2 R11: 1ffff1100bc300d1 R12: dffffc0000000000
R13: 00000000000000fa R14: ffff88801b908fa0 R15: 1ffff920018b7f5c
FS: 000055555e70b500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002580 CR3: 00000000723cb000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: d8 48 c1 fmuls -0x3f(%rax)
3: e8 03 42 80 3c call 0x3c80420b
8: 20 00 and %al,(%rax)
a: 74 08 je 0x14
c: 48 89 df mov %rbx,%rdi
f: e8 4f 20 6c fa call 0xfa6c2063
14: 48 8b 03 mov (%rbx),%rax
17: 48 89 44 24 20 mov %rax,0x20(%rsp)
1c: 48 8d 98 d0 07 00 00 lea 0x7d0(%rax),%rbx
23: 49 89 dd mov %rbx,%r13
26: 49 c1 ed 03 shr $0x3,%r13
* 2a: 43 80 7c 25 00 00 cmpb $0x0,0x0(%r13,%r12,1) <-- trapping instruction
30: 74 08 je 0x3a
32: 48 89 df mov %rbx,%rdi
35: e8 29 20 6c fa call 0xfa6c2063
3a: 48 89 5c 24 28 mov %rbx,0x28(%rsp)
3f: 48 rex.W