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: 433 Comm: syz-executor.0 Not tainted 5.10.85-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:traverse_mounts fs/namei.c:1347 [inline]
RIP: 0010:handle_mounts fs/namei.c:1465 [inline]
RIP: 0010:step_into+0x19d/0xbe0 fs/namei.c:1770
Code: 0f 85 0a 08 00 00 44 8b 27 43 80 7c 35 00 00 74 0a 48 8b 7c 24 60 e8 02 16 f6 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 f8 07 00 00 8b 33 f7 c6 00 00 07 00 0f
RSP: 0018:ffffc90000877840 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: 0000000000877800
RDX: 1ffff9200010ef97 RSI: 0000000000000002 RDI: ffffc90000877cb8
RBP: ffffc90000877970 R08: 0000000000000000 R09: ffffed102397b645
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000011
R13: 1ffff9200010ef1f R14: dffffc0000000000 R15: ffffc90000877c80
FS:  00007f86dc892700(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f33c24b3ae0 CR3: 0000000109f97000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 walk_component+0x2f6/0x540 fs/namei.c:1946
 link_path_walk+0x50f/0xb70 fs/namei.c:2259
 path_lookupat+0xaf/0x350 fs/namei.c:2412
 filename_lookup+0x24d/0x6a0 fs/namei.c:2446
 user_path_at_empty+0x31/0x40 fs/namei.c:2726
 user_path_at include/linux/namei.h:59 [inline]
 do_mount fs/namespace.c:3239 [inline]
 __do_sys_mount fs/namespace.c:3450 [inline]
 __se_sys_mount+0x21f/0x2d0 fs/namespace.c:3427
 __x64_sys_mount+0xba/0xd0 fs/namespace.c:3427
 do_syscall_64+0x34/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f86dcd1f169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f86dc892168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f86dce3ef80 RCX: 00007f86dcd1f169
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f86dcd7aca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe4836bbef R14: 00007f86dc892300 R15: 0000000000022000
Modules linked in:
---[ end trace cde57eeeaea2bb76 ]---
RIP: 0010:traverse_mounts fs/namei.c:1347 [inline]
RIP: 0010:handle_mounts fs/namei.c:1465 [inline]
RIP: 0010:step_into+0x19d/0xbe0 fs/namei.c:1770
Code: 0f 85 0a 08 00 00 44 8b 27 43 80 7c 35 00 00 74 0a 48 8b 7c 24 60 e8 02 16 f6 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 f8 07 00 00 8b 33 f7 c6 00 00 07 00 0f
RSP: 0018:ffffc90000877840 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: 0000000000877800
RDX: 1ffff9200010ef97 RSI: 0000000000000002 RDI: ffffc90000877cb8
RBP: ffffc90000877970 R08: 0000000000000000 R09: ffffed102397b645
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000011
R13: 1ffff9200010ef1f R14: dffffc0000000000 R15: ffffc90000877c80
FS:  00007f86dc892700(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f86dc871718 CR3: 0000000109f97000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	0f 85 0a 08 00 00    	jne    0x810
   6:	44 8b 27             	mov    (%rdi),%r12d
   9:	43 80 7c 35 00 00    	cmpb   $0x0,0x0(%r13,%r14,1)
   f:	74 0a                	je     0x1b
  11:	48 8b 7c 24 60       	mov    0x60(%rsp),%rdi
  16:	e8 02 16 f6 ff       	callq  0xfff6161d
  1b:	48 8b 9c 24 b8 00 00 	mov    0xb8(%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 f8 07 00 00    	jne    0x82f
  37:	8b 33                	mov    (%rbx),%esi
  39:	f7 c6 00 00 07 00    	test   $0x70000,%esi
  3f:	0f                   	.byte 0xf