linux-kernel - Re: [vs-plain] Re: [PATCH] mm: larger stack guard gap, between vmas

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Date:   Thu, 22 Jun 2017 23:23:28 +0200
From:   Helge Deller <deller@....de>
To:     Ben Hutchings <ben@...adent.org.uk>, Willy Tarreau <w@....eu>,
        Levente Polyak <anthraxx@...hlinux.org>
Cc:     Hugh Dickins <hughd@...gle.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Michal Hocko <mhocko@...nel.org>,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        Rik van Riel <riel@...hat.com>,
        Larry Woodman <lwoodman@...hat.com>,
        "Kirill A. Shutemov" <kirill@...temov.name>,
        Tony Luck <tony.luck@...el.com>,
        "James E.J. Bottomley" <jejb@...isc-linux.org>,
        James Hogan <james.hogan@...tec.com>,
        Laura Abbott <labbott@...hat.com>, Greg KH <greg@...ah.com>,
        security@...nel.org, linux-distros@...openwall.org, qsa@...lys.com,
        stable <stable@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [vs-plain] Re: [PATCH] mm: larger stack guard gap, between vmas

On 22.06.2017 16:14, Ben Hutchings wrote:
> On Thu, 2017-06-22 at 15:59 +0200, Willy Tarreau wrote:
>>> -- Allow stack to grow up to address space limit
>>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
>>> commit/?id=bd726c90b6b8ce87602208701b208a208e6d5600
>>
>> This one cleanly applies after, but I think Ben is currently looking
>> for feedback on the validity of his backport which was a difficult
>> task.
> 
> Right.

Ben,
I might be able to give it a try, but I'm not sure if I'm able to boot
that kernel on my parisc box. Kernel 3.9 was basically the first one
which was run basically stable on parisc, but since then we had
some ABI changes in userspace (reduced SIGRTMIN, made
EWOULDBLOCK == EAGAIN) which might prevent me to boot that
kernel with current glibc.
Anyway, can you point me to your patches ?

Helge