syzbot

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WARNING: CPU: 1 PID: 3613 at fs/kernfs/dir.c:36 kernfs_active+0x119/0x150 fs/kernfs/dir.c:36
Modules linked in:
CPU: 1 PID: 3613 Comm: syz-executor187 Not tainted 6.1.0-rc4-syzkaller-00356-g8f2975c2bb4c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:kernfs_active+0x119/0x150 fs/kernfs/dir.c:36
Code: e8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 1f 8b 5b 04 31 ff 89 de e8 e6 6d 7e ff 89 d8 5b f7 d0 5d c1 e8 1f c3 e8 07 71 7e ff <0f> 0b eb a5 48 89 ef e8 5b c7 ca ff eb d7 48 c7 c7 4c 65 e2 8d e8
RSP: 0018:ffffc90003c7fbc0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8881400f3570 RCX: 0000000000000000
RDX: ffff888020a6ba80 RSI: ffffffff81fe3b79 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881400f3570
R13: ffff888079626000 R14: 0000000000000000 R15: 0000000000000002
FS:  00005555572c8300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 000000001d099000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 kernfs_find_and_get_node_by_id+0x84/0x170 fs/kernfs/dir.c:708
 __kernfs_fh_to_dentry+0xdb/0x270 fs/kernfs/mount.c:102
 exportfs_decode_fh_raw+0x127/0x7d0 fs/exportfs/expfs.c:435
 exportfs_decode_fh+0x38/0x90 fs/exportfs/expfs.c:575
 do_handle_to_path fs/fhandle.c:152 [inline]
 handle_to_path fs/fhandle.c:207 [inline]
 do_handle_open+0x2b6/0x8b0 fs/fhandle.c:223
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8dc5726be9
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe9cd315d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8dc5726be9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 00007f8dc56ead90 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8dc56eae20
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>