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

[Pavel Skripkin]

On Mon, 17 May 2021 15:08:18 +0200
Jan Kara <jack@xxxxxxx> 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@xxxxxxxxxxxxxxxxxxxxxxxxx
> > Signed-off-by: Pavel Skripkin <paskripkin@xxxxxxxxx>
> 
> 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