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Re: TAKE 985525 - Fix use after free in xfs_log_done().

To: Martin Steigerwald <Martin@xxxxxxxxxxxx>
Subject: Re: TAKE 985525 - Fix use after free in xfs_log_done().
From: Lachlan McIlroy <lachlan@xxxxxxx>
Date: Thu, 14 Aug 2008 11:07:28 +1000
Cc: linux-xfs@xxxxxxxxxxx
In-reply-to: <200808131115.03350.Martin@xxxxxxxxxxxx>
References: <20080812044629.B2DE858C52A4@xxxxxxxxxxxxxxxxxxxxxxx> <200808122253.57666.Martin@xxxxxxxxxxxx> (sfid-20080812_225744_709880_4EB8AD8F) <200808131115.03350.Martin@xxxxxxxxxxxx>
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Martin Steigerwald wrote:
Am Dienstag 12 August 2008 schrieb Martin Steigerwald:
Am Dienstag 12 August 2008 schrieb Lachlan McIlroy:
Fix use after free in xfs_log_done().

The ticket allocation code got reworked in 2.6.26 and we now free
tickets whereas before we used to cache them so the use-after-free
went undetected.
Is this intended to go to stable tree?

How serious is this? I intend to update my laptops to 2.6.26.

Nevermind, I just applied the patch.


Okay.

We've only seen this bug once and I'm surprised it happened at all
so I wouldn't consider it a serious problem.


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