linux-kernel - Re: [PATCH v2] reiserfs: add check for invalid 1st journal block

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Message-ID: <20210608134443.022b3389@gmail.com>
Date:   Tue, 8 Jun 2021 13:44:43 +0300
From:   Pavel Skripkin <paskripkin@...il.com>
To:     Jan Kara <jack@...e.cz>
Cc:     tiantao6@...ilicon.com, rdunlap@...radead.org,
        reiserfs-devel@...r.kernel.org, linux-kernel@...r.kernel.org,
        syzbot+0ba9909df31c6a36974d@...kaller.appspotmail.com
Subject: Re: [PATCH v2] reiserfs: add check for invalid 1st journal block

On Mon, 17 May 2021 15:08:18 +0200
Jan Kara <jack@...e.cz> wrote:

> On Mon 17-05-21 15:15:45, Pavel Skripkin wrote:
> > syzbot reported divide error in reiserfs.
> > The problem was in incorrect journal 1st block.
> > 
> > Syzbot's reproducer manualy generated wrong superblock
> > with incorrect 1st block. In journal_init() wasn't
> > any checks about this particular case.
> > 
> > For example, if 1st journal block is before superblock
> > 1st block, it can cause zeroing important superblock members
> > in do_journal_end().
> > 
> > Reported-by: syzbot+0ba9909df31c6a36974d@...kaller.appspotmail.com
> > Signed-off-by: Pavel Skripkin <paskripkin@...il.com>
> 
> Thanks! I've added the patch to my tree.
> 
> 								Honza
> 

Hi, Jan!

Is this patched got lost somehow? I did't find it in your tree here
https://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs.git/.

Sorry to bother you, maybe Im missing something :)



With regards,
Pavel Skripkin