Re: [syzbot] [mm?] WARNING in move_to_new_folio

[syzbot]

syzbot has bisected this issue to:

commit 7ee3647243e5c4a9d74d4c7ec621eac75c6d37ea
Author: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Date:   Wed Apr 2 14:59:57 2025 +0000

    migrate: Remove call to ->writepage

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15be8fe4580000
start commit:   01c6df60d5d4 Add linux-next specific files for 20250411
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=17be8fe4580000
console output: https://syzkaller.appspot.com/x/log.txt?x=13be8fe4580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=db03cefa26ecf825
dashboard link: https://syzkaller.appspot.com/bug?extid=8bb6fd945af4e0ad9299
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10afca3f980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=116f5c04580000

Reported-by: syzbot+8bb6fd945af4e0ad9299@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 7ee3647243e5 ("migrate: Remove call to ->writepage")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection