------------[ cut here ]------------
memcpy: detected field-spanning write (size 125) of single field "&fh->fb" at fs/overlayfs/export.c:799 (size 21)
WARNING: CPU: 0 PID: 29846 at fs/overlayfs/export.c:799 ovl_fid_to_fh fs/overlayfs/export.c:799 [inline]
WARNING: CPU: 0 PID: 29846 at fs/overlayfs/export.c:799 ovl_fh_to_dentry+0x8c7/0x960 fs/overlayfs/export.c:812
Modules linked in:
CPU: 0 PID: 29846 Comm: syz-executor.5 Not tainted 6.1.0-rc5-syzkaller #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 8d 97 92 fe c6 05 40 fe 03 0b 01 b9 15 00 00 00 48 c7 c7 20 fc cb 8a 4c 89 fe 48 c7 c2 00 fe cb 8a 31 c0 e8 89 35 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:ffffc90008aefaa0 EFLAGS: 00010246
RAX: be826ebd7b760100 RBX: ffff888075399800 RCX: 0000000000040000
RDX: ffffc9000d725000 RSI: 000000000000553f RDI: 0000000000005540
RBP: ffffc90008aefbb0 R08: ffffffff816b9e3d R09: fffff5200115df0d
R10: fffff5200115df0d R11: 1ffff9200115df0c R12: 1ffff9200115df60
R13: 0000000000000080 R14: ffff888075399803 R15: 000000000000007d
FS:  00007f631e1df700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561e512da000 CR3: 0000000079995000 CR4: 00000000003506f0
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: 0033:0x7f631d48b639
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:00007f631e1df168 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007f631d5abf80 RCX: 00007f631d48b639
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 00007f631d4e6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc2e5c064f R14: 00007f631e1df300 R15: 0000000000022000
 </TASK>