linux-kernel - Re: [PATCH v6 10/18] x86/power/64: Remove VLA usage

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1782361.6NaZWiq7ky@aspire.rjw.lan>
Date:   Mon, 06 Aug 2018 12:28:28 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Kees Cook <keescook@...omium.org>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Arnd Bergmann <arnd@...db.de>,
        Eric Biggers <ebiggers@...gle.com>,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Alasdair Kergon <agk@...hat.com>,
        Rabin Vincent <rabinv@...s.com>,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        Pavel Machek <pavel@....cz>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        the arch/x86 maintainers <x86@...nel.org>,
        Philipp Reisner <philipp.reisner@...bit.com>,
        Lars Ellenberg <lars.ellenberg@...bit.com>,
        Jens Axboe <axboe@...nel.dk>,
        Giovanni Cabiddu <giovanni.cabiddu@...el.com>,
        Mike Snitzer <snitzer@...hat.com>,
        Paul Mackerras <paulus@...ba.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        David Howells <dhowells@...hat.com>,
        Johannes Berg <johannes@...solutions.net>,
        Tudor-Dan Ambarus <tudor.ambarus@...rochip.com>,
        Jia-Ju Bai <baijiaju1990@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        David Woodhouse <dwmw@...zon.co.uk>,
        Will Deacon <will.deacon@....com>,
        device-mapper development <dm-devel@...hat.com>,
        Linux PM <linux-pm@...r.kernel.org>,
        linux-crypto <linux-crypto@...r.kernel.org>,
        drbd-dev@...ts.linbit.com,
        linux-block <linux-block@...r.kernel.org>, qat-linux@...el.com,
        linux-ppp@...r.kernel.org, netdev <netdev@...r.kernel.org>,
        "open list:ANDROID DRIVERS" <devel@...verdev.osuosl.org>,
        linux-afs@...ts.infradead.org,
        "open list:NETWORKING DRIVERS (WIRELESS)" 
        <linux-wireless@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v6 10/18] x86/power/64: Remove VLA usage

On Wednesday, July 25, 2018 8:01:47 PM CEST Kees Cook wrote:
> On Wed, Jul 25, 2018 at 4:32 AM, Rafael J. Wysocki <rafael@...nel.org> wrote:
> > On Tue, Jul 24, 2018 at 6:49 PM, Kees Cook <keescook@...omium.org> wrote:
> >> In the quest to remove all stack VLA usage from the kernel[1], this
> >> removes the discouraged use of AHASH_REQUEST_ON_STACK by switching to
> >> shash directly and allocating the descriptor in heap memory (which should
> >> be fine: the tfm has already been allocated there too).
> >>
> >> [1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com
> >>
> >> Signed-off-by: Kees Cook <keescook@...omium.org>
> >> Acked-by: Pavel Machek <pavel@....cz>
> >
> > I think I can queue this up if there are no objections from others.
> >
> > Do you want me to do that?
> 
> Sure thing. It looks like the other stand-alone patches like this one
> are getting taken into the non-crypto trees, so that's fine.
> 

Applied now, thanks!