From: Andy Lutomirski <luto@amacapital.net>
To: "kernel-hardening@lists.openwall.com"
<kernel-hardening@lists.openwall.com>,
Kees Cook <keescook@chromium.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
X86 ML <x86@kernel.org>, Borislav Petkov <bp@alien8.de>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Playing with virtually mapped stacks (with guard pages!)
Date: Tue, 14 Jun 2016 23:01:19 -0700 [thread overview]
Message-ID: <CALCETrWMh0+_RKV1OwwqE6s8P=fLFUYcAxvSNwDK_qB6BOBs9w@mail.gmail.com> (raw)
Hi all-
If you want to play with virtually mapped stacks, I have it more or
less working on x86 in a branch here:
https://git.kernel.org/cgit/linux/kernel/git/luto/linux.git/log/?h=x86/vmap_stack
The core bit (virtually map the stack and fix the accounting) is just
a config option, but it needs the arch to opt-in. I suspect that
every arch will have its own set of silly issues to address to make it
work well. For x86, the silly issues are getting the OOPS to work
right and handling some vmalloc_fault oddities to avoid panicing at
random.
--Andy
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next reply other threads:[~2016-06-15 6:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-15 6:01 Andy Lutomirski [this message]
2016-06-15 17:05 ` Kees Cook
2016-06-15 17:23 ` Andy Lutomirski
2016-06-15 17:49 ` Kees Cook
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CALCETrWMh0+_RKV1OwwqE6s8P=fLFUYcAxvSNwDK_qB6BOBs9w@mail.gmail.com' \
--to=luto@amacapital.net \
--cc=bp@alien8.de \
--cc=keescook@chromium.org \
--cc=kernel-hardening@lists.openwall.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox