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

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Message-ID: <87lieqdr6n.fsf@spindle.srvr.nix>
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)
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