------------[ cut here ]------------
memcpy: detected field-spanning write (size 33) of single field "&fh->fb" at fs/overlayfs/export.c:799 (size 21)
WARNING: CPU: 1 PID: 21164 at fs/overlayfs/export.c:799 ovl_fid_to_fh fs/overlayfs/export.c:799 [inline]
WARNING: CPU: 1 PID: 21164 at fs/overlayfs/export.c:799 ovl_fh_to_dentry+0x8c7/0x960 fs/overlayfs/export.c:812
Modules linked in:
CPU: 1 PID: 21164 Comm: syz-executor.2 Not tainted 6.1.0-rc8-syzkaller-00164-g4cee37b3a4e6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:ovl_fid_to_fh fs/overlayfs/export.c:799 [inline]
RIP: 0010:ovl_fh_to_dentry+0x8c7/0x960 fs/overlayfs/export.c:812
Code: ff e8 dd 67 92 fe c6 05 cd cc 69 0b 01 b9 15 00 00 00 48 c7 c7 20 3b 2c 8b 4c 89 fe 48 c7 c2 00 3d 2c 8b 31 c0 e8 c9 fd 59 fe <0f> 0b e9 08 fa ff ff 89 d9 80 e1 07 38 c1 0f 8c 3f f9 ff ff 48 89
RSP: 0018:ffffc9000365faa0 EFLAGS: 00010246
RAX: f1dd972507c19700 RBX: ffff888022a5b500 RCX: 0000000000040000
RDX: ffffc9000601b000 RSI: 000000000000544d RDI: 000000000000544e
RBP: ffffc9000365fbb0 R08: ffffffff816e5c7d R09: fffff520006cbf0d
R10: fffff520006cbf0d R11: 1ffff920006cbf0c R12: 1ffff920006cbf60
R13: 0000000000000024 R14: ffff888022a5b503 R15: 0000000000000021
FS:  00007fa0db912700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8d25b85058 CR3: 000000001d1f4000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 exportfs_decode_fh_raw+0x115/0x600 fs/exportfs/expfs.c:435
 exportfs_decode_fh+0x38/0x70 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+0x485/0x950 fs/fhandle.c:223
 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+0x63/0xcd
RIP: 0033:0x7fa0dac8c0d9
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:00007fa0db912168 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007fa0dadabf80 RCX: 00007fa0dac8c0d9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007fa0dace7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffe60dccef R14: 00007fa0db912300 R15: 0000000000022000
 </TASK>