general protection fault, probably for non-canonical address 0xdffffc00000000da: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000006d0-0x00000000000006d7]
CPU: 0 PID: 4424 Comm: syz.1.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:ucsi_acpi_probe+0x68/0x500 drivers/usb/typec/ucsi/ucsi_acpi.c:223
Code: 89 74 24 08 4c 8b 23 4c 89 e7 e8 03 4b ba fd 49 83 c4 f0 45 31 f6 84 c0 4d 0f 45 f4 49 81 c6 d4 06 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 47 04 00 00 41 8b 2e 31 ff 89 ee e8 7f
RSP: 0018:ffffc90004c2fa70 EFLAGS: 00010203
RAX: 00000000000000da RBX: ffff8880185a13d8 RCX: 0000000000080000
RDX: ffffc90005559000 RSI: 0000000000002b16 RDI: 0000000000002b17
RBP: 0000000000000000 R08: ffff8880288ddbcb R09: 1ffff1100511bb79
R10: dffffc0000000000 R11: ffffed100511bb7a R12: fffffffffffffff0
R13: dffffc0000000000 R14: 00000000000006d4 R15: 1ffff110030b427b
FS:  00007f5bb06f16c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe667516b8 CR3: 00000000580d9000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 platform_probe+0x137/0x1c0 drivers/base/platform.c:1400
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x24a/0xb40 drivers/base/dd.c:638
 __driver_probe_device+0x1f5/0x390 drivers/base/dd.c:804
 device_driver_attach+0xd9/0x1c0 drivers/base/dd.c:1131
 bind_store+0x33b/0x380 drivers/base/bus.c:216
 kernfs_fop_write_iter+0x3a0/0x520 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2271 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x482/0x9a0 fs/read_write.c:584
 ksys_write+0x14d/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f5baf79e159
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:00007f5bb06f1028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f5bafa25fa0 RCX: 00007f5baf79e159
RDX: 0000000000000007 RSI: 0000200000000600 RDI: 0000000000000005
RBP: 00007f5baf83503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5bafa26038 R14: 00007f5bafa25fa0 R15: 00007ffdf4757678
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ucsi_acpi_probe+0x68/0x500 drivers/usb/typec/ucsi/ucsi_acpi.c:223
Code: 89 74 24 08 4c 8b 23 4c 89 e7 e8 03 4b ba fd 49 83 c4 f0 45 31 f6 84 c0 4d 0f 45 f4 49 81 c6 d4 06 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 47 04 00 00 41 8b 2e 31 ff 89 ee e8 7f
RSP: 0018:ffffc90004c2fa70 EFLAGS: 00010203
RAX: 00000000000000da RBX: ffff8880185a13d8 RCX: 0000000000080000
RDX: ffffc90005559000 RSI: 0000000000002b16 RDI: 0000000000002b17
RBP: 0000000000000000 R08: ffff8880288ddbcb R09: 1ffff1100511bb79
R10: dffffc0000000000 R11: ffffed100511bb7a R12: fffffffffffffff0
R13: dffffc0000000000 R14: 00000000000006d4 R15: 1ffff110030b427b
FS:  00007f5bb06f16c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005626b0709a90 CR3: 00000000580d9000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	89 74 24 08          	mov    %esi,0x8(%rsp)
   4:	4c 8b 23             	mov    (%rbx),%r12
   7:	4c 89 e7             	mov    %r12,%rdi
   a:	e8 03 4b ba fd       	call   0xfdba4b12
   f:	49 83 c4 f0          	add    $0xfffffffffffffff0,%r12
  13:	45 31 f6             	xor    %r14d,%r14d
  16:	84 c0                	test   %al,%al
  18:	4d 0f 45 f4          	cmovne %r12,%r14
  1c:	49 81 c6 d4 06 00 00 	add    $0x6d4,%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 47 04 00 00    	jne    0x47e
  37:	41 8b 2e             	mov    (%r14),%ebp
  3a:	31 ff                	xor    %edi,%edi
  3c:	89 ee                	mov    %ebp,%esi
  3e:	e8                   	.byte 0xe8
  3f:	7f                   	.byte 0x7f