linux-kernel - Re: [syzbot] kernel BUG in ext4_do

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Message-ID: <20240621160942.4bfi56fgy6ycvtl4@quack3>
Date: Fri, 21 Jun 2024 18:09:42 +0200
From: Jan Kara <jack@...e.cz>
To: syzbot <syzbot+d1da16f03614058fdc48@...kaller.appspotmail.com>
Cc: adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org,
	linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com,
	tytso@....edu
Subject: Re: [syzbot] kernel BUG in ext4_do_writepages

On Thu 20-06-24 17:16:16, syzbot wrote:
> This bug is marked as fixed by commit:
> ext4: fix race condition between buffer write and page_mkwrite
> 
> But I can't find it in the tested trees[1] for more than 90 days.
> Is it a correct commit? Please update it by replying:
> 
> #syz fix: exact-commit-title
> 
> Until then the bug is still considered open and new crashes with
> the same signature are ignored.
> 
> Kernel: Linux
> Dashboard link: https://syzkaller.appspot.com/bug?extid=d1da16f03614058fdc48

This bug is still unfixed AFAIK as we realized the fixing commit is buggy
and there's no easy fix (inline_data feature has some difficult to address
problems). So can we 'syz unfix' this? :)

								Honza

-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR