general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 0 PID: 2506 Comm: syz.0.634 Not tainted 6.1.115-syzkaller-00041-ga887a44ace2a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:traverse_mounts fs/namei.c:1430 [inline]
RIP: 0010:handle_mounts fs/namei.c:1542 [inline]
RIP: 0010:step_into+0x1c4/0x1090 fs/namei.c:1835
Code: c0 0f 85 bb 0b 00 00 44 8b 3b 43 80 3c 34 00 74 0a 48 8b 7c 24 10 e8 6b b1 f2 ff 48 8b 9c 24 d8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 a8 0b 00 00 8b 1b 89 de 81 e6 00 00 07
RSP: 0018:ffffc90000bc78a0 EFLAGS: 00010206
RAX: 0000000000000003 RBX: 000000000000001b RCX: 0000000000080000
RDX: ffffc90001319000 RSI: 00000000000001c2 RDI: 00000000000001c3
RBP: ffffc90000bc79f0 R08: ffffffff81ca43f9 R09: ffffed1022b70e75
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000178f2f
R13: ffffc90000bc7c20 R14: dffffc0000000000 R15: 0000000000000010
FS:  00007f99d4dc96c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000afe0 CR3: 000000014281e000 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+0x72c/0xee0 fs/namei.c:2324
 path_lookupat+0xa0/0x450 fs/namei.c:2477
 filename_lookup+0x251/0x600 fs/namei.c:2507
 user_path_at_empty+0x43/0x1a0 fs/namei.c:2904
 user_path_at include/linux/namei.h:57 [inline]
 path_setxattr+0xae/0x2a0 fs/xattr.c:631
 __do_sys_lsetxattr fs/xattr.c:659 [inline]
 __se_sys_lsetxattr fs/xattr.c:655 [inline]
 __x64_sys_lsetxattr+0xc2/0xe0 fs/xattr.c:655
 x64_sys_call+0x506/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:190
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f99d3f80849
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:00007f99d4dc9058 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007f99d4145fa0 RCX: 00007f99d3f80849
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000020000080
RBP: 00007f99d3ff3986 R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f99d4145fa0 R15: 00007ffe4e8448b8
 </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+0x1c4/0x1090 fs/namei.c:1835
Code: c0 0f 85 bb 0b 00 00 44 8b 3b 43 80 3c 34 00 74 0a 48 8b 7c 24 10 e8 6b b1 f2 ff 48 8b 9c 24 d8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 a8 0b 00 00 8b 1b 89 de 81 e6 00 00 07
RSP: 0018:ffffc90000bc78a0 EFLAGS: 00010206
RAX: 0000000000000003 RBX: 000000000000001b RCX: 0000000000080000
RDX: ffffc90001319000 RSI: 00000000000001c2 RDI: 00000000000001c3
RBP: ffffc90000bc79f0 R08: ffffffff81ca43f9 R09: ffffed1022b70e75
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000178f2f
R13: ffffc90000bc7c20 R14: dffffc0000000000 R15: 0000000000000010
FS:  00007f99d4dc96c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000afe0 CR3: 000000014281e000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	c0 0f 85             	rorb   $0x85,(%rdi)
   3:	bb 0b 00 00 44       	mov    $0x4400000b,%ebx
   8:	8b 3b                	mov    (%rbx),%edi
   a:	43 80 3c 34 00       	cmpb   $0x0,(%r12,%r14,1)
   f:	74 0a                	je     0x1b
  11:	48 8b 7c 24 10       	mov    0x10(%rsp),%rdi
  16:	e8 6b b1 f2 ff       	call   0xfff2b186
  1b:	48 8b 9c 24 d8 00 00 	mov    0xd8(%rsp),%rbx
  22:	00
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 30       	movzbl (%rax,%r14,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 a8 0b 00 00    	jne    0xbdf
  37:	8b 1b                	mov    (%rbx),%ebx
  39:	89 de                	mov    %ebx,%esi
  3b:	81                   	.byte 0x81
  3c:	e6 00                	out    %al,$0x0
  3e:	00 07                	add    %al,(%rdi)