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 PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Fri, 20 Nov 2020 14:53:15 +0000 From: James Morse <james.morse@....com> To: Valentin Schneider <valentin.schneider@....com> Cc: linux-kernel@...r.kernel.org, x86@...nel.org, Fenghua Yu <fenghua.yu@...el.com>, Reinette Chatre <reinette.chatre@...el.com>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, "H. Peter Anvin" <hpa@...or.com> Subject: Re: [PATCH 1/2] x86/intel_rdt: Check monitor group vs control group membership earlier Hi Valentin, On 18/11/2020 18:00, Valentin Schneider wrote: > A task can only be moved between monitor groups if both groups belong to > the same control group. This is checked fairly late however: by that time > we already have appended a task_work() callback. (is that a problem? It's needed to do the kfree()) > Check the validity of the move before getting anywhere near task_work > callbacks. This saves the kzalloc()/task_work_add() if it wasn't going to be necessary. Reviewed-by: James Morse <james.morse@....com> Thanks, James
Powered by blists - more mailing lists