general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 5209 Comm: syz.2.253 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:mcp_i2c_xfer+0x58/0x420 drivers/hid/hid-mcp2221.c:341
Code: 01 00 00 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 19 d5 55 fa 48 8b 1b 48 89 d8 48 c1 e8 03 4d 89 f4 48 89 04 24 <42> 80 3c 30 00 74 08 48 89 df e8 f9 d4 55 fa 4c 8b 33 4d 8d ae 70
RSP: 0018:ffffc9000328f970 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90005491000 RSI: 0000000000001263 RDI: 0000000000001264
RBP: 0000000000000001 R08: ffff8880557c8697 R09: 1ffff1100aaf90d2
R10: dffffc0000000000 R11: ffffed100aaf90d3 R12: dffffc0000000000
R13: 1ffff1100aaf902b R14: dffffc0000000000 R15: ffffc9000328fc00
FS:  00007fe2dc9506c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3c3ac9 CR3: 0000000067d18000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __i2c_transfer+0x880/0x20b0 drivers/i2c/i2c-core-base.c:-1
 i2c_transfer+0x25d/0x3a0 drivers/i2c/i2c-core-base.c:2330
 i2c_transfer_buffer_flags+0x10a/0x1a0 drivers/i2c/i2c-core-base.c:2358
 i2c_master_recv include/linux/i2c.h:79 [inline]
 i2cdev_read+0x84/0x170 drivers/i2c/i2c-dev.c:151
 vfs_read+0x301/0xd60 fs/read_write.c:483
 ksys_read+0x152/0x260 fs/read_write.c:623
 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: 0033:0x7fe2de6f4eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe2dc950028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fe2de96ffa0 RCX: 00007fe2de6f4eb9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fe2de762c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe2de970038 R14: 00007fe2de96ffa0 R15: 00007ffe9bdd10a8
 </TASK>
Modules linked in:
---[ end trace 2c2dcd5b352dff19 ]---
RIP: 0010:mcp_i2c_xfer+0x58/0x420 drivers/hid/hid-mcp2221.c:341
Code: 01 00 00 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 19 d5 55 fa 48 8b 1b 48 89 d8 48 c1 e8 03 4d 89 f4 48 89 04 24 <42> 80 3c 30 00 74 08 48 89 df e8 f9 d4 55 fa 4c 8b 33 4d 8d ae 70
RSP: 0018:ffffc9000328f970 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90005491000 RSI: 0000000000001263 RDI: 0000000000001264
RBP: 0000000000000001 R08: ffff8880557c8697 R09: 1ffff1100aaf90d2
R10: dffffc0000000000 R11: ffffed100aaf90d3 R12: dffffc0000000000
R13: 1ffff1100aaf902b R14: dffffc0000000000 R15: ffffc9000328fc00
FS:  00007fe2dc9506c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa7bd306e9c CR3: 0000000067d18000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	01 00                	add    %eax,(%rax)
   2:	00 48 89             	add    %cl,-0x77(%rax)
   5:	d8 48 c1             	fmuls  -0x3f(%rax)
   8:	e8 03 42 80 3c       	call   0x3c804210
   d:	30 00                	xor    %al,(%rax)
   f:	74 08                	je     0x19
  11:	48 89 df             	mov    %rbx,%rdi
  14:	e8 19 d5 55 fa       	call   0xfa55d532
  19:	48 8b 1b             	mov    (%rbx),%rbx
  1c:	48 89 d8             	mov    %rbx,%rax
  1f:	48 c1 e8 03          	shr    $0x3,%rax
  23:	4d 89 f4             	mov    %r14,%r12
  26:	48 89 04 24          	mov    %rax,(%rsp)
* 2a:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 f9 d4 55 fa       	call   0xfa55d532
  39:	4c 8b 33             	mov    (%rbx),%r14
  3c:	4d                   	rex.WRB
  3d:	8d                   	.byte 0x8d
  3e:	ae                   	scas   %es:(%rdi),%al
  3f:	70                   	.byte 0x70