linux-kernel - Re: [syzbot] [ocfs2?] [ext4?] WARNING in __jbd2_log_wait_for

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Message-ID: <694b3481.050a0220.35954c.0009.GAE@google.com>
Date: Tue, 23 Dec 2025 16:32:01 -0800
From: syzbot <syzbot+04ae2c9e709a347f1a81@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, dmantipov@...dex.ru, jack@...e.com, 
	jlbec@...lplan.org, joseph.qi@...ux.alibaba.com, kartikey406@...il.com, 
	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org, mark@...heh.com, 
	ocfs2-devel@...ts.linux.dev, syzkaller-bugs@...glegroups.com, tytso@....edu
Subject: Re: [syzbot] [ocfs2?] [ext4?] WARNING in __jbd2_log_wait_for_space

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=11b4ef1a580000
start commit:   63676eefb7a0 Merge tag 'sched_ext-for-6.13-rc5-fixes' of g..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=ba7cde9482d6bb6
dashboard link: https://syzkaller.appspot.com/bug?extid=04ae2c9e709a347f1a81
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15c678b0580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=112bcedf980000

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