linux-kernel - Re: [PATCH 6/8 v2] x86, UV: remove cpumask

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] [day] [month] [year] [list]

Message-ID: <BANLkTi=Q+xg=yZHLg6frP61tk9MKfs0G8g@mail.gmail.com>
Date:	Wed, 15 Jun 2011 19:12:37 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	Cliff Wickman <cpw@....com>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu
Subject: Re: [PATCH 6/8 v2] x86, UV: remove cpumask_t from the stack

On Wed, Jun 15, 2011 at 6:47 PM, Cliff Wickman <cpw@....com> wrote:
> From: Cliff Wickman <cpw@....com>
>
> Remove the stack-resident cpumask_t from reset_with_ipi() by allocating
> one per uvhub.
>
> Due to the limited size of the stack the potentially huge cpumask_t may
> cause stack overrun.  We haven't seen it happen yet, but we need to make it
> a practice not to push such structures onto the stack.
>
> Diffed against 3.0.0-rc3
>
> Signed-off-by: Cliff Wickman <cpw@....com>

Reviewed-by: Pekka Enberg <penberg@...nel.org>
--
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/