linux-kernel - Re: [syzbot] [ocfs2?] kernel BUG in ocfs2_set_new_buffer

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Message-ID: <696862fa.050a0220.58bed.000b.GAE@google.com>
Date: Wed, 14 Jan 2026 19:46:02 -0800
From: syzbot <syzbot+7aef76bdb53b83d62a9e@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, dmantipov@...dex.ru, jlbec@...lplan.org, 
	joseph.qi@...ux.alibaba.com, kartikey406@...il.com, 
	linux-kernel@...r.kernel.org, lvc-project@...uxtesting.org, mark@...heh.com, 
	ocfs2-devel@...ts.linux.dev, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [ocfs2?] kernel BUG in ocfs2_set_new_buffer_uptodate (2)

syzbot suspects this issue was fixed by commit:

commit 93ce0ff117b0c468961d7c296a03ad57e1e8da9f
Author: Deepanshu Kartikey <kartikey406@...il.com>
Date:   Thu Oct 30 15:30:03 2025 +0000

    ocfs2: validate cl_bpc in allocator inodes to prevent divide-by-zero

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=143ebd9a580000
start commit:   499551201b5f Merge tag 'arm64-fixes' of git://git.kernel.o..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=6a2b862bf4a5409f
dashboard link: https://syzkaller.appspot.com/bug?extid=7aef76bdb53b83d62a9e
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=136ab2df980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=124f6f30580000

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

#syz fix: ocfs2: validate cl_bpc in allocator inodes to prevent divide-by-zero

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