general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 PID: 12884 Comm: syz-executor.3 Not tainted 6.1.68-syzkaller-00050-g09ca5740fbbe #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:traverse_mounts fs/namei.c:1428 [inline]
RIP: 0010:handle_mounts fs/namei.c:1540 [inline]
RIP: 0010:step_into+0x1c4/0x1090 fs/namei.c:1831
Code: c0 0f 85 bb 0b 00 00 44 8b 3b 43 80 3c 34 00 74 0a 48 8b 7c 24 10 e8 db fa 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:ffffc9000cb579a0 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000000000040000
RDX: ffffc90004562000 RSI: 00000000000001b3 RDI: 00000000000001b4
RBP: ffffc9000cb57af0 R08: ffffffff81c94309 R09: ffffed1023ec72bd
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200196af4f
R13: ffffc9000cb57c20 R14: dffffc0000000000 R15: 0000000000000001
FS:  00007f7968f9c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33824000 CR3: 0000000176bae000 CR4: 00000000003526a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 walk_component+0x234/0x410 fs/namei.c:1999
 lookup_last fs/namei.c:2450 [inline]
 path_lookupat+0x16d/0x450 fs/namei.c:2474
 filename_lookup+0x251/0x600 fs/namei.c:2503
 user_path_at_empty+0x43/0x1a0 fs/namei.c:2876
 user_path_at include/linux/namei.h:57 [inline]
 do_mount fs/namespace.c:3380 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount+0x285/0x3b0 fs/namespace.c:3568
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3568
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7969e7f4aa
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7968f9bef8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f7968f9bf80 RCX: 00007f7969e7f4aa
RDX: 0000000020006380 RSI: 00000000200063c0 RDI: 0000000000000000
RBP: 0000000020006380 R08: 00007f7968f9bf80 R09: 0000000000010000
R10: 0000000000010000 R11: 0000000000000206 R12: 00000000200063c0
R13: 00007f7968f9bf40 R14: 0000000000000000 R15: 0000000020006400
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:traverse_mounts fs/namei.c:1428 [inline]
RIP: 0010:handle_mounts fs/namei.c:1540 [inline]
RIP: 0010:step_into+0x1c4/0x1090 fs/namei.c:1831
Code: c0 0f 85 bb 0b 00 00 44 8b 3b 43 80 3c 34 00 74 0a 48 8b 7c 24 10 e8 db fa 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:ffffc9000cb579a0 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000000000040000
RDX: ffffc90004562000 RSI: 00000000000001b3 RDI: 00000000000001b4
RBP: ffffc9000cb57af0 R08: ffffffff81c94309 R09: ffffed1023ec72bd
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200196af4f
R13: ffffc9000cb57c20 R14: dffffc0000000000 R15: 0000000000000001
FS:  00007f7968f9c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000041 CR3: 0000000176bae000 CR4: 00000000003526a0
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 db fa f2 ff       	call   0xfff2faf6
  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)