------------[ cut here ]------------
memcpy: detected field-spanning write (size 105) of single field "&fh->fb" at fs/overlayfs/export.c:799 (size 21)
WARNING: CPU: 0 PID: 23392 at fs/overlayfs/export.c:799 ovl_fid_to_fh fs/overlayfs/export.c:799 [inline]
WARNING: CPU: 0 PID: 23392 at fs/overlayfs/export.c:799 ovl_fh_to_dentry+0x884/0x960 fs/overlayfs/export.c:812
Modules linked in:
CPU: 0 PID: 23392 Comm: syz-executor.0 Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd #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+0x884/0x960 fs/overlayfs/export.c:812
Code: f9 ff ff e8 3e 86 a9 fe b9 15 00 00 00 4c 89 f6 48 c7 c2 a0 d7 86 8a 48 c7 c7 00 d8 86 8a c6 05 2f d4 65 0b 01 e8 ab 6d d0 06 <0f> 0b e9 ec f8 ff ff 49 c7 c6 ea ff ff ff bb ea ff ff ff c7 44 24
RSP: 0018:ffffc9000cb5fb30 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 000000000000006c RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff8165785c RDI: fffff5200196bf58
RBP: ffff8880273f5300 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: 00000000000000fb
R13: 1ffff9200196bf6e R14: 0000000000000069 R15: ffff8880273f5303
FS:  00007fc77b4b8700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020030030 CR3: 000000006902f000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 exportfs_decode_fh_raw+0x12b/0x7d0 fs/exportfs/expfs.c:435
 exportfs_decode_fh+0x3c/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+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc77a68c0d9
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:00007fc77b4b8168 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007fc77a7abf80 RCX: 00007fc77a68c0d9
RDX: 0000000000000000 RSI: 0000000020000640 RDI: 0000000000000003
RBP: 00007fc77a6e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff0d4dd23f R14: 00007fc77b4b8300 R15: 0000000000022000
 </TASK>