linux-kernel - Re: Apparent serious progressive ext4 data corruption bug in 3.6.3 (and other stable branches?)

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] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 29 Oct 2012 01:04:32 +0000
From:	Nix <nix@...eri.org.uk>
To:	"Theodore Ts'o" <tytso@....edu>
Cc:	Eric Sandeen <sandeen@...hat.com>, linux-ext4@...r.kernel.org,
	linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org
Subject: Re: Apparent serious progressive ext4 data corruption bug in 3.6.3 (and other stable branches?)

On 29 Oct 2012, Theodore Ts'o spake thusly:

>     commit 119c0d4460b001e44b41dcf73dc6ee794b98bd31 modified this function
>     such that the inode bitmap was being modified outside a transaction,
>     which could lead to corruption, and was discovered when journal_checksum
>     found a bad checksum in the journal.

Hm. If this could have caused corruption for non-checksum users, it must
be a pretty rare case if nobody's hit it in six months -- or maybe, I
suppose, they hit it and never noticed. (But, hey, this makes me happier
to have reported this despite all the flap, if it's found a genuine bug
that could have hit people not using wierdo mount options.)

Thanks for spending so much time on this fix. Much appreciated.

-- 
NULL && (void)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/