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: <f37a111b-f5c5-4337-8eaf-46a2c28f01da@gmail.com>
Date: Wed, 3 Apr 2024 22:26:19 +0200
From: Klara Modin <klarasmodin@...il.com>
To: Borislav Petkov <bp@...en8.de>
Cc: Josh Poimboeuf <jpoimboe@...nel.org>, "Kaplan, David"
 <David.Kaplan@....com>, Ingo Molnar <mingo@...nel.org>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "linux-tip-commits@...r.kernel.org" <linux-tip-commits@...r.kernel.org>,
 "Peter Zijlstra (Intel)" <peterz@...radead.org>,
 "x86@...nel.org" <x86@...nel.org>, David Howells <dhowells@...hat.com>
Subject: Re: [PATCH -v2] x86/retpoline: Ensure default return thunk isn't used
 at runtime

On 2024-04-03 19:30, Borislav Petkov wrote:
> On Wed, Apr 03, 2024 at 07:10:17PM +0200, Klara Modin wrote:
>> With this patch/commit, one of my machines (older P4 Xeon, 32-bit only)
>> hangs on boot with CONFIG_RETHUNK=y / CONFIG_MITIGATION_RETHUNK=y.
> 
> I wanna say your old P4 heater :) is not even affected by the crap the
> return thunks are trying to address so perhaps we should make
> CONFIG_MITIGATION_RETHUNK depend on !X86_32...
> 

Probably, I don't have much knowledge about this stuff. The machine can 
at least be useful for testing still :)

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ