linux-kernel - Re: [PATCH] aio: fix potential leak in aio_run

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Message-ID: <20140501062406.GB1806@mguzik.redhat.com>
Date:	Thu, 1 May 2014 08:24:06 +0200
From:	Mateusz Guzik <mguzik@...hat.com>
To:	Leon Yu <chianglungyu@...il.com>
Cc:	Benjamin LaHaise <bcrl@...ck.org>,
	Alexander Viro <viro@...iv.linux.org.uk>, linux-aio@...ck.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] aio: fix potential leak in aio_run_iocb().

On Thu, May 01, 2014 at 03:31:28AM +0000, Leon Yu wrote:
> iovec should be reclaimed whenever caller of rw_copy_check_uvector() returns,
> but it doesn't hold when failure happens right after aio_setup_vectored_rw().
> 

There is a proposal (wich a patch) to modify semantics of rw_copy_check_uvector
so that it frees stuff on error, taking care of this case as well:

https://lkml.org/lkml/2014/4/25/778

-- 
Mateusz Guzik
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