lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:	Thu, 20 Sep 2012 11:54:49 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Tao Ma <tm@....ma>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [PATCH] ext4: Don't calc checksum in update_backups in online
 resize.

On Thu, Sep 20, 2012 at 02:33:43PM +0800, Tao Ma wrote:
> From: Tao Ma <boyu.mt@...bao.com>
> 
> update_backups is used to backup all the metadata blocks, so we should
> not take it for granted that 'data' is pointed to a super block and use
> ext4_superblock_csum_set to calculate the checksum there. In case
> the data is a group descriptor block, it will corrupt the last group
> descriptor. And e2fsck will complain it.
> 
> As all the metadata checksum should already be OK when we do the backup,
> remove the wrong ext4_superblock_csum_set and it should be just fine.
> 
> Reported-by: "Theodore Ts'o" <tytso@....edu>
> Signed-off-by: Tao Ma <boyu.mt@...bao.com>

Applied.  Thanks for finding the fix!!

					- Ted
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists