general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 0 PID: 439 Comm: syz.0.15 Not tainted 6.1.134-syzkaller-1169264-ga0fa2316cce1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:traverse_mounts fs/namei.c:1430 [inline]
RIP: 0010:handle_mounts fs/namei.c:1542 [inline]
RIP: 0010:step_into+0x11d/0xf30 fs/namei.c:1835
Code: 74 24 08 c6 44 24 7f 00 43 0f b6 04 3c 84 c0 4d 89 fd 0f 85 08 0c 00 00 45 8b 36 4c 8b bc 24 a8 00 00 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 07 0c 00 00 45 8b 3f 44 89 fe 81 e6 00
RSP: 0018:ffffc9000075f8e0 EFLAGS: 00010202
RAX: 0000000000000002 RBX: ffffc9000075fc00 RCX: ffff888119d21440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000075f9f0 R08: dffffc0000000000 R09: ffffed10217694dd
R10: ffffed10217694dd R11: 1ffff110217694dc R12: 1ffff920000ebf87
R13: dffffc0000000000 R14: 0000000000000011 R15: 0000000000000010
FS:  00007fbe822176c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbe821d5d58 CR3: 0000000122f61000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 walk_component fs/namei.c:2003 [inline]
 link_path_walk+0x6be/0xe50 fs/namei.c:2324
 path_lookupat+0x95/0x490 fs/namei.c:2477
 filename_lookup+0x1f0/0x500 fs/namei.c:2507
 user_path_at_empty+0x47/0x1c0 fs/namei.c:2904
 user_path_at include/linux/namei.h:57 [inline]
 do_mount fs/namespace.c:3396 [inline]
 __do_sys_mount fs/namespace.c:3607 [inline]
 __se_sys_mount+0x2e3/0x380 fs/namespace.c:3584
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3584
 x64_sys_call+0x65d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fbe81375ae9
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:00007fbe82217048 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fbe81503fa0 RCX: 00007fbe81375ae9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000000
RBP: 00007fbe813f6746 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fbe81503fa0 R15: 00007ffecdcd91e8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:traverse_mounts fs/namei.c:1430 [inline]
RIP: 0010:handle_mounts fs/namei.c:1542 [inline]
RIP: 0010:step_into+0x11d/0xf30 fs/namei.c:1835
Code: 74 24 08 c6 44 24 7f 00 43 0f b6 04 3c 84 c0 4d 89 fd 0f 85 08 0c 00 00 45 8b 36 4c 8b bc 24 a8 00 00 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 07 0c 00 00 45 8b 3f 44 89 fe 81 e6 00
RSP: 0018:ffffc9000075f8e0 EFLAGS: 00010202
RAX: 0000000000000002 RBX: ffffc9000075fc00 RCX: ffff888119d21440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000075f9f0 R08: dffffc0000000000 R09: ffffed10217694dd
R10: ffffed10217694dd R11: 1ffff110217694dc R12: 1ffff920000ebf87
R13: dffffc0000000000 R14: 0000000000000011 R15: 0000000000000010
FS:  00007fbe822176c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbe821d5d58 CR3: 0000000122f61000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	74 24                	je     0x26
   2:	08 c6                	or     %al,%dh
   4:	44 24 7f             	rex.R and $0x7f,%al
   7:	00 43 0f             	add    %al,0xf(%rbx)
   a:	b6 04                	mov    $0x4,%dh
   c:	3c 84                	cmp    $0x84,%al
   e:	c0 4d 89 fd          	rorb   $0xfd,-0x77(%rbp)
  12:	0f 85 08 0c 00 00    	jne    0xc20
  18:	45 8b 36             	mov    (%r14),%r14d
  1b:	4c 8b bc 24 a8 00 00 	mov    0xa8(%rsp),%r15
  22:	00
  23:	4c 89 f8             	mov    %r15,%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 07 0c 00 00    	jne    0xc3e
  37:	45 8b 3f             	mov    (%r15),%r15d
  3a:	44 89 fe             	mov    %r15d,%esi
  3d:	81                   	.byte 0x81
  3e:	e6 00                	out    %al,$0x0