linux-kernel - Re: [PATCH] vfs: fix vmplice_to

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Message-ID: <20140527175157.GU18016@ZenIV.linux.org.uk>
Date:	Tue, 27 May 2014 18:51:57 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Miklos Szeredi <miklos@...redi.hu>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH] vfs: fix vmplice_to_user()

On Tue, May 27, 2014 at 04:41:16PM +0200, Miklos Szeredi wrote:
> From: Miklos Szeredi <mszeredi@...e.cz>
> 
> Commit 6130f5315ee8 "switch vmsplice_to_user() to copy_page_to_iter()" in
> v3.15-rc1 broke vmsplice(2).
> 
> This patch fixes two bugs:
> 
>  - count is not initialized to a proper value, which resulted in no data
>    being copied
> 
>  - if rw_copy_check_uvector() returns negative then the iov might be leaked.
> 
> Tested OK.

Applied, will push tonight.
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