Re: [syzbot] [mm?] KASAN: slab-use-after-free Read in mas_next_slot (2)

[syzbot]

syzbot has bisected this issue to:

commit ef69a41567549aa8ba7deb350ab1f3f55011591d
Author: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
Date:   Fri Jul 11 11:38:23 2025 +0000

    mm/mremap: permit mremap() move of multiple VMAs

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=170f458c580000
start commit:   0be23810e32e Add linux-next specific files for 20250714
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=148f458c580000
console output: https://syzkaller.appspot.com/x/log.txt?x=108f458c580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=adc3ea2bfe31343b
dashboard link: https://syzkaller.appspot.com/bug?extid=ebfd0e44b5c11034e1eb
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11d0658c580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15dd858c580000

Reported-by: syzbot+ebfd0e44b5c11034e1eb@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: ef69a4156754 ("mm/mremap: permit mremap() move of multiple VMAs")

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