------------[ 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: 21678 at fs/overlayfs/export.c:799 ovl_fid_to_fh fs/overlayfs/export.c:799 [inline] WARNING: CPU: 0 PID: 21678 at fs/overlayfs/export.c:799 ovl_fh_to_dentry+0x880/0x950 fs/overlayfs/export.c:812 Modules linked in: CPU: 0 PID: 21678 Comm: syz-executor.5 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+0x880/0x950 fs/overlayfs/export.c:812 Code: f9 ff ff e8 c2 0f ab fe b9 15 00 00 00 4c 89 f6 48 c7 c2 e0 26 28 8a 48 c7 c7 40 27 28 8a c6 05 77 db fa 0a 01 e8 0c 31 78 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:ffffc90003f7fb30 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 000000000000006c RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff81621b98 RDI: fffff520007eff58 RBP: ffff88805d722600 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 203a7970636d656d R12: 00000000000000fb R13: 1ffff920007eff6e R14: 0000000000000069 R15: ffff88805d722603 FS: 00007f1c098da700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1c08b14069 CR3: 0000000016fb7000 CR4: 0000000000350ef0 Call Trace: exportfs_decode_fh_raw+0x127/0x7d0 fs/exportfs/expfs.c:435 exportfs_decode_fh+0x38/0x90 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+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f1c08a8b5a9 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:00007f1c098da168 EFLAGS: 00000246 ORIG_RAX: 0000000000000130 RAX: ffffffffffffffda RBX: 00007f1c08babf80 RCX: 00007f1c08a8b5a9 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 00007f1c08ae67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc5cbffb1f R14: 00007f1c098da300 R15: 0000000000022000