linux-kernel - Re: [tip:x86/efi] x86/efi: Check for unsafe dealing with FPU state in irq ctxt

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <538FA332.4000602@zytor.com>
Date:	Wed, 04 Jun 2014 15:52:34 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Borislav Petkov <bp@...e.de>
CC:	linux-kernel@...r.kernel.org, mingo@...nel.org,
	ricardo.neri-calderon@...ux.intel.com, tglx@...utronix.de,
	matt.fleming@...el.com, linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/efi] x86/efi: Check for unsafe dealing with FPU state
 in irq ctxt

On 06/04/2014 03:49 PM, Borislav Petkov wrote:
> On Wed, Jun 04, 2014 at 03:17:30PM -0700, H. Peter Anvin wrote:
>> I seem to have lost track of this... does this actually solve
>> anything, or does it just mean we'll explode hard?
> 
> Not that hard - it'll warn once only.
> 
> AFAIR, the discussion stalled but we were going in the direction of not
> calling into efi from pstore in irq context.
> 
> I'd say we drop this until we have a proper solution.
> 

Works for me.

	-hpa

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/