linux-kernel - Re: [PATCH] xtensa: fix access check in csum_and_copy_from

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Message-ID: <CAMo8BfJeM0_MHcZWc4aZs0XVv9XH3vXwpiU0xjmU1G24fXV4tw@mail.gmail.com>
Date:   Tue, 21 Jul 2020 20:53:57 -0700
From:   Max Filippov <jcmvbkbc@...il.com>
To:     Al Viro <viro@...iv.linux.org.uk>
Cc:     "open list:TENSILICA XTENSA PORT (xtensa)" 
        <linux-xtensa@...ux-xtensa.org>, Chris Zankel <chris@...kel.net>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] xtensa: fix access check in csum_and_copy_from_user

On Tue, Jul 21, 2020 at 4:04 PM Al Viro <viro@...iv.linux.org.uk> wrote:
>
> On Tue, Jul 21, 2020 at 03:00:35PM -0700, Max Filippov wrote:
> > Commit d341659f470b ("xtensa: switch to providing
> > csum_and_copy_from_user()") introduced access check, but incorrectly
> > tested dst instead of src.
> > Fix access_ok argument in csum_and_copy_from_user.
>
> Applied, with apologies...  Which tree do you want it to go through?
> I'm dropping it into vfs.git#fixes, will send to Linus unless you
> prefer it to go some other way...

NP. Anything that will go into 5.8 is good.

-- 
Thanks.
-- Max