linux-kernel - Re: auxv stuff (Re: [PATCH] prctl: fix PR_SET_MM

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Message-ID: <YFD9+0BEvMtwMqVi@localhost.localdomain>
Date:   Tue, 16 Mar 2021 21:50:35 +0300
From:   Alexey Dobriyan <adobriyan@...il.com>
To:     Cyrill Gorcunov <gorcunov@...il.com>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: auxv stuff (Re: [PATCH] prctl: fix PR_SET_MM_AUXV kernel stack
 leak)

On Mon, Mar 15, 2021 at 09:42:47AM +0300, Cyrill Gorcunov wrote:
> On Mon, Mar 15, 2021 at 09:00:00AM +0300, Alexey Dobriyan wrote:
> > On Sun, Mar 14, 2021 at 02:40:05PM -0700, Linus Torvalds wrote:
> > > [mm->saved_auxv]
> > > 
> > > That's a separate issue, and I can't find it in myself to care (and
> > > nobody has ever complained), but I thought I'd mention it.
> > 
> > There is another (non-security) one. Compat 32-bit process will report
> > 2 longs too many:
> 
> Good catch! Alexey, should I address it? Or you have fixed it already?

I didn't and I don't know how frankly.
Something I've noticed during more important auxv rewrite.