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Re: Review: Fix use after free on forced shutdown

To: David Chinner <dgc@xxxxxxx>
Subject: Re: Review: Fix use after free on forced shutdown
From: Lachlan McIlroy <lachlan@xxxxxxx>
Date: Wed, 20 Dec 2006 08:49:01 +0000
Cc: xfs-dev@xxxxxxx, xfs@xxxxxxxxxxx
In-reply-to: <20061219053012.GY33919298@xxxxxxxxxxxxxxxxx>
Organization: SGI
References: <20061219053012.GY33919298@xxxxxxxxxxxxxxxxx>
Reply-to: lachlan@xxxxxxx
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Fix looks good to me.

David Chinner wrote:
As found earlier today trying to reproduce a different use
after free, a machine with CONFIG_SLAB_DEBUG will panic on
a forced shutdown if the inode has an assocaited item
in the AIL.

Trivial fix is to remove the item from the AIL before
freeing it.

Cheers,

Dave.


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