linux-kernel - Re: [PATCH] iov_iter: fix the uaccess area in copy_compat_iovec_from

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Message-ID: <20210111175003.GA3579531@ZenIV.linux.org.uk>
Date:   Mon, 11 Jan 2021 17:50:03 +0000
From:   Al Viro <viro@...iv.linux.org.uk>
To:     Christoph Hellwig <hch@....de>
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        David Laight <David.Laight@...lab.com>
Subject: Re: [PATCH] iov_iter: fix the uaccess area in
 copy_compat_iovec_from_user

On Mon, Jan 11, 2021 at 06:19:26PM +0100, Christoph Hellwig wrote:
> sizeof needs to be called on the compat pointer, not the native one.
> 
> Fixes: 89cd35c58bc2 ("iov_iter: transparently handle compat iovecs in import_iovec")
> Reported-by: David Laight <David.Laight@...LAB.COM>
> Signed-off-by: Christoph Hellwig <hch@....de>

Applied.