------------[ 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: 27917 at fs/overlayfs/export.c:799 ovl_fid_to_fh fs/overlayfs/export.c:799 [inline]
WARNING: CPU: 1 PID: 27917 at fs/overlayfs/export.c:799 ovl_fh_to_dentry+0x8c7/0x960 fs/overlayfs/export.c:812
Modules linked in:
CPU: 1 PID: 27917 Comm: syz-executor.1 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
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 4d b0 92 fe c6 05 41 26 04 0b 01 b9 15 00 00 00 48 c7 c7 60 03 cc 8a 4c 89 fe 48 c7 c2 40 05 cc 8a 31 c0 e8 89 4e 5a 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:ffffc90008117aa0 EFLAGS: 00010246
RAX: 39281f0656ea5500 RBX: ffff8880837b4e80 RCX: 0000000000040000
RDX: ffffc90012767000 RSI: 0000000000005499 RDI: 000000000000549a
RBP: ffffc90008117bb0 R08: ffffffff816b8dfd R09: fffff52001022f0d
R10: fffff52001022f0d R11: 1ffff92001022f0c R12: 1ffff92001022f60
R13: 0000000000000024 R14: ffff8880837b4e83 R15: 0000000000000021
FS:  00007fe6e13ff700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f795ada8000 CR3: 000000001777e000 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: 0033:0x7fe6e208b5a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe6e13ff168 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007fe6e21abf80 RCX: 00007fe6e208b5a9
RDX: 0000000000423840 RSI: 0000000020000100 RDI: 0000000000000003
RBP: 00007fe6e20e67b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffec994e14f R14: 00007fe6e13ff300 R15: 0000000000022000
 </TASK>