------------[ cut here ]------------
memcpy: detected field-spanning write (size 105) of single field "&fh->fb" at fs/overlayfs/export.c:799 (size 21)
WARNING: CPU: 1 PID: 7845 at fs/overlayfs/export.c:799 ovl_fid_to_fh fs/overlayfs/export.c:799 [inline]
WARNING: CPU: 1 PID: 7845 at fs/overlayfs/export.c:799 ovl_fh_to_dentry+0x880/0x950 fs/overlayfs/export.c:812
Modules linked in:
CPU: 1 PID: 7845 Comm: syz-executor.3 Not tainted 6.0.0-syzkaller-02734-g0326074ff465 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:ovl_fid_to_fh fs/overlayfs/export.c:799 [inline]
RIP: 0010:ovl_fh_to_dentry+0x880/0x950 fs/overlayfs/export.c:812
Code: f9 ff ff e8 32 bb ac fe b9 15 00 00 00 4c 89 f6 48 c7 c2 20 b9 27 8a 48 c7 c7 80 b9 27 8a c6 05 0b e4 fc 0a 01 e8 8c 42 70 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:ffffc9000301fb30 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 000000000000006c RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff81601e78 RDI: fffff52000603f58
RBP: ffff88801eb30400 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: 00000000000000fb
R13: 1ffff92000603f6e R14: 0000000000000069 R15: ffff88801eb30403
FS:  00007f8ea88af700(0000) GS:ffff88802c900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffa7ebb0000 CR3: 0000000045237000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 exportfs_decode_fh_raw+0x127/0x7d0 fs/exportfs/expfs.c:436
 exportfs_decode_fh+0x38/0x90 fs/exportfs/expfs.c:576
 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: 0033:0x7f8ea768a5a9
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:00007f8ea88af168 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007f8ea77abf80 RCX: 00007f8ea768a5a9
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 00007f8ea76e5580 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdeb24cb9f R14: 00007f8ea88af300 R15: 0000000000022000
 </TASK>