From: Michal Hocko <mhocko@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>,
Ben Hutchings <ben@decadent.org.uk>, Willy Tarreau <w@1wt.eu>,
Oleg Nesterov <oleg@redhat.com>, Rik van Riel <riel@redhat.com>,
LKML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>
Subject: Re: [PATCH] mm: mm, mmap: do not blow on PROT_NONE MAP_FIXED holes in the stack
Date: Wed, 5 Jul 2017 20:28:49 +0200 [thread overview]
Message-ID: <20170705182849.GA18027@dhcp22.suse.cz> (raw)
In-Reply-To: <CA+55aFxxeCtZ-PBqrZK5K2nDjCFBWRMKE09Bz650ZiR2h=b8dg@mail.gmail.com>
On Wed 05-07-17 10:43:27, Linus Torvalds wrote:
> On Wed, Jul 5, 2017 at 9:56 AM, Michal Hocko <mhocko@kernel.org> wrote:
> >
> > "mm: enlarge stack guard gap" has introduced a regression in some rust
> > and Java environments which are trying to implement their own stack
> > guard page. They are punching a new MAP_FIXED mapping inside the
> > existing stack Vma.
>
> Hmm. What version is this patch against? It doesn't seem to match my 4.12 tree.
Dohh, that was on mmotm which has a clean up by Oleg which reorganizes
the code a bit. This is on top of the current master
---
next prev parent reply other threads:[~2017-07-05 18:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-05 16:56 Michal Hocko
2017-07-05 17:43 ` Linus Torvalds
2017-07-05 18:28 ` Michal Hocko [this message]
2017-07-05 18:35 ` Linus Torvalds
2017-07-05 18:53 ` Michal Hocko
2017-07-05 19:10 ` Michal Hocko
2017-07-05 19:15 ` Linus Torvalds
2017-07-05 19:17 ` Willy Tarreau
2017-07-05 21:18 ` Andrew Morton
2017-07-05 21:41 ` Linus Torvalds
2017-07-06 6:47 ` Michal Hocko
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