linux-kernel - Re: 4.4-rc5: ugly warn on: 5 W+X pages found

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Message-ID: <20151214122856.GA3598@amd>
Date:	Mon, 14 Dec 2015 13:29:23 +0100
From:	Pavel Machek <pavel@....cz>
To:	kernel list <linux-kernel@...r.kernel.org>, sds@...ho.nsa.gov,
	luto@...capital.net, arjan@...ux.intel.com, bp@...en8.de,
	brgerst@...il.com, dvlasenk@...hat.com, hpa@...or.com,
	torvalds@...ux-foundation.org, efault@....de, peterz@...radead.org,
	tglx@...utronix.de
Subject: Re: 4.4-rc5: ugly warn on: 5 W+X pages found

On Mon 2015-12-14 09:04:03, Pavel Machek wrote:
> Hi!
> 
> > Kernel complains:
> 
> And now, we are at -rc5, and kernel still complains...
> 
> ...with a back trace, which is clearly completely useless, and just
> there to make it scary and make people report.
> 
> Problem is... noone cares for the reports. (-rc0 version below).
> 
> Can we get rid of that WARN_ON? If you do care about reports, please
> add email address those can be reported to. If you don't... just drop
> it.
> 
> Hardware is thinkpad x60.

> [    3.285993] x86/mm: Found insecure W+X mapping at address
> ffe69000/0xffe69000


---[ Persisent kmap() Area ]---
0xffc00000-0xffd28000        1184K                               pte
0xffd28000-0xffddd000         724K     RW                 GLB NX pte
0xffddd000-0xffe69000         560K                               pte
0xffe69000-0xffe6e000          20K     RW                 GLB x  pte
0xffe6e000-0xffe6f000           4K                               pte
---[ Fixmap Area ]---

Any other info that would be useful?
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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