general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 1 PID: 351 Comm: syz-executor.0 Not tainted 5.15.78-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:traverse_mounts fs/namei.c:1376 [inline]
RIP: 0010:handle_mounts fs/namei.c:1496 [inline]
RIP: 0010:step_into+0x1a1/0xd00 fs/namei.c:1802
Code: 84 c0 0f 85 2c 09 00 00 45 8b 20 43 80 7c 35 00 00 74 08 48 89 df e8 8e 9f f5 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 20 09 00 00 8b 33 f7 c6 00 00 07 00 0f
RSP: 0018:ffffc900006e77c0 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: 00000000006e7800
RDX: 1ffff920000dcf8f RSI: 0000000000000002 RDI: 0000000000000010
RBP: ffffc900006e7910 R08: ffffc900006e7c78 R09: ffffed10237795ed
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000011
R13: 1ffff920000dcf13 R14: dffffc0000000000 R15: ffffc900006e7c40
FS:  00007fa04d369700(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa04d348718 CR3: 000000012161f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 walk_component+0x2f6/0x540 fs/namei.c:1978
 link_path_walk+0x5b9/0xd10
 path_lookupat+0xaf/0x340 fs/namei.c:2450
 filename_lookup+0x22b/0x550 fs/namei.c:2480
 user_path_at_empty+0x38/0x150 fs/namei.c:2853
 user_path_at include/linux/namei.h:57 [inline]
 do_mount fs/namespace.c:3334 [inline]
 __do_sys_mount fs/namespace.c:3545 [inline]
 __se_sys_mount+0x21f/0x2d0 fs/namespace.c:3522
 __x64_sys_mount+0xba/0xd0 fs/namespace.c:3522
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fa04d7f6169
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:00007fa04d369168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa04d915f80 RCX: 00007fa04d7f6169
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007fa04d851ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc5bc1731f R14: 00007fa04d369300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 48d69b979dfcdab3 ]---
RIP: 0010:traverse_mounts fs/namei.c:1376 [inline]
RIP: 0010:handle_mounts fs/namei.c:1496 [inline]
RIP: 0010:step_into+0x1a1/0xd00 fs/namei.c:1802
Code: 84 c0 0f 85 2c 09 00 00 45 8b 20 43 80 7c 35 00 00 74 08 48 89 df e8 8e 9f f5 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 20 09 00 00 8b 33 f7 c6 00 00 07 00 0f
RSP: 0018:ffffc900006e77c0 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: 00000000006e7800
RDX: 1ffff920000dcf8f RSI: 0000000000000002 RDI: 0000000000000010
RBP: ffffc900006e7910 R08: ffffc900006e7c78 R09: ffffed10237795ed
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000011
R13: 1ffff920000dcf13 R14: dffffc0000000000 R15: ffffc900006e7c40
FS:  00007fa04d369700(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa04d348718 CR3: 000000012161f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	84 c0                	test   %al,%al
   2:	0f 85 2c 09 00 00    	jne    0x934
   8:	45 8b 20             	mov    (%r8),%r12d
   b:	43 80 7c 35 00 00    	cmpb   $0x0,0x0(%r13,%r14,1)
  11:	74 08                	je     0x1b
  13:	48 89 df             	mov    %rbx,%rdi
  16:	e8 8e 9f f5 ff       	callq  0xfff59fa9
  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 20 09 00 00    	jne    0x957
  37:	8b 33                	mov    (%rbx),%esi
  39:	f7 c6 00 00 07 00    	test   $0x70000,%esi
  3f:	0f                   	.byte 0xf