From: Arjan van de Ven <arjan@linux.intel.com>
To: Andy Lutomirski <luto@amacapital.net>, Pavel Machek <pavel@ucw.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Borislav Petkov <bp@alien8.de>,
kernel list <linux-kernel@vger.kernel.org>,
Stephen Smalley <sds@tycho.nsa.gov>,
Brian Gerst <brgerst@gmail.com>,
Denys Vlasenko <dvlasenk@redhat.com>, Peter Anvin <hpa@zytor.com>,
Mike Galbraith <efault@gmx.de>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: 4.4-rc5: ugly warn on: 5 W+X pages found
Date: Mon, 14 Dec 2015 13:24:08 -0800 [thread overview]
Message-ID: <566F3378.8070009@linux.intel.com> (raw)
In-Reply-To: <CALCETrX6DrW2AJz=WGjMW+nNTsq08+Cte0m=CF_Q9+uzsuR1vA@mail.gmail.com>
> That's weird. The only API to do that seems to be manually setting
> kmap_prot to _PAGE_KERNEL_EXEC, and nothing does that. (Why is
> kmap_prot a variable on x86 at all? It has exactly one writer, and
> that's the code that initializes it in the first place. Shouldn't we
> #define kmap_prot _PAGE_KERNEL?
iirc it changes based on runtime detection of NX capability
next prev parent reply other threads:[~2015-12-14 21:24 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-15 7:00 4.4-rc0: " Pavel Machek
2015-11-23 14:37 ` Mihai Donțu
2015-12-08 21:19 ` Kees Cook
2015-12-09 0:10 ` Dave Jones
2015-12-09 19:33 ` Mihai Donțu
2015-12-14 8:04 ` 4.4-rc5: ugly warn on: " Pavel Machek
2015-12-14 8:58 ` Borislav Petkov
2015-12-14 9:07 ` Pavel Machek
2015-12-14 9:15 ` Borislav Petkov
2015-12-14 19:18 ` Linus Torvalds
2015-12-14 20:26 ` Pavel Machek
2015-12-14 21:02 ` Andy Lutomirski
2015-12-14 21:24 ` Arjan van de Ven [this message]
2015-12-14 22:25 ` Andy Lutomirski
2015-12-15 9:40 ` Pavel Machek
2015-12-15 17:45 ` Linus Torvalds
2015-12-15 18:30 ` Borislav Petkov
2015-12-15 19:06 ` Linus Torvalds
2015-12-15 19:15 ` Borislav Petkov
2015-12-15 18:40 ` Andy Lutomirski
2015-12-15 19:08 ` Linus Torvalds
2015-12-15 20:58 ` Pavel Machek
2015-12-15 21:12 ` 4.4.-rc5: lguest causes " Pavel Machek
2015-12-16 2:24 ` Rusty Russell
2015-12-16 8:10 ` Pavel Machek
2015-12-15 21:33 ` 4.4-rc5: " Borislav Petkov
2015-12-15 22:07 ` Pavel Machek
2015-12-15 22:15 ` Borislav Petkov
2015-12-15 7:56 ` Pavel Machek
2015-12-15 8:09 ` [PATCH 0/2] x86/mm: A _PAGE_NX fixlet and a kmap cleanup Andy Lutomirski
2015-12-15 8:09 ` [PATCH 1/2] x86_32/mm: Set NX in __supported_pte_mask before enabling paging Andy Lutomirski
2015-12-15 8:09 ` [PATCH 2/2] x86/mm: Make kmap_prot into a #define Andy Lutomirski
2016-01-19 9:26 ` [PATCH 0/2] x86/mm: A _PAGE_NX fixlet and a kmap cleanup Ingo Molnar
2016-01-19 19:44 ` Andy Lutomirski
2015-12-15 13:26 ` 4.4-rc5: ugly warn on: 5 W+X pages found Arjan van de Ven
2015-12-15 14:08 ` Pavel Machek
2015-12-15 16:28 ` H. Peter Anvin
2015-12-15 17:45 ` Pavel Machek
2015-12-14 12:29 ` Pavel Machek
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=566F3378.8070009@linux.intel.com \
--to=arjan@linux.intel.com \
--cc=bp@alien8.de \
--cc=brgerst@gmail.com \
--cc=dvlasenk@redhat.com \
--cc=efault@gmx.de \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@amacapital.net \
--cc=pavel@ucw.cz \
--cc=peterz@infradead.org \
--cc=sds@tycho.nsa.gov \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.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
Powered by JetHome