Re: [syzbot] [ocfs2?] KASAN: slab-use-after-free Read in ocfs2_reserve_suballoc_bits

syzbot
2026-01-16T06:01:03Z

syzbot suspects this issue was fixed by commit:

commit e1c70505ee8158c1108340d9cd67182ade93af4a
Author: Dmitry Antipov <dmantipov@yandex.ru>
Date: Thu Oct 30 15:30:02 2025 +0000

ocfs2: add extra consistency checks for chain allocator dinodes

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=140a0852580000
start commit: 36c254515dc6 Merge tag 'powerpc-6.12-4' of git://git.kerne..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=7a3fccdd0bb995
dashboard link: https://syzkaller.appspot.com/bug?extid=af14efe17dfa46173239
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13444727980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11861440580000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: ocfs2: add extra consistency checks for chain allocator dinodes

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