lkml.org 
[lkml]   [2011]   [May]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH] vsprintf: Turn kptr_restrict off by default
From
From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 12 May 2011 23:00:28 +0200

> Subject: vsprintf: Turn kptr_restrict off by default
>
> kptr_restrict has been triggering bugs in apps such as perf, and it also makes
> the system less useful by default, so turn it off by default.
>
> This is how we generally handle security features that remove functionality,
> such as firewall code or SELinux - they have to be configured and activated
> from user-space.
>
> Distributions can turn kptr_restrict on again via this line in
> /etc/sysctrl.conf:
>
> kernel.kptr_restrict = 1
>
> ( Also mark the variable __read_mostly while at it, as it's typically modified
> only once per bootup, or not at all. )
>
> Signed-off-by: Ingo Molnar <mingo@elte.hu>

Acked-by: David S. Miller <davem@davemloft.net>


\
 
 \ /
  Last update: 2011-05-12 23:11    [W:0.074 / U:1.272 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site