Re: [PATCH] kernel/time: Make /proc/timer_list mode 0400

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From: Peter Zijlstra

Subject: Re: [PATCH] kernel/time: Make /proc/timer_list mode 0400

Date: Wednesday, November 17, 2010 - 10:18 am

On Wed, 2010-11-17 at 18:08 +0100, Marcus Meissner wrote:
quoted text> Hi,
> 
> /proc/timer_list contains kernel addresses, like e.g.:
>  #0: <c000000001404158>, tick_sched_timer, S:01, .tick_nohz_restart_sched_tick, swapper/0
>  ...
> 
> Avoid leaking them to user space to make writing kernel exploits a bit harder.
> 
> (I currently cannot think of a userland tool that uses this, this is
> likely pretty much root-only.)

iirc powertop parses this..
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Messages in current thread:

[PATCH] kernel/time: Make /proc/timer_list mode 0400, Marcus Meissner, (Wed Nov 17, 10:08 am)

Re: [PATCH] kernel/time: Make /proc/timer_list mode 0400, Peter Zijlstra, (Wed Nov 17, 10:18 am)

Re: [PATCH] kernel/time: Make /proc/timer_list mode 0400, Marcus Meissner, (Wed Nov 17, 10:21 am)

Re: [PATCH] kernel/time: Make /proc/timer_list mode 0400, Peter Zijlstra, (Wed Nov 17, 10:33 am)

Re: [PATCH] kernel/time: Make /proc/timer_list mode 0400, Andrew Morton, (Wed Nov 17, 1:30 pm)

Re: [PATCH] kernel/time: Make /proc/timer_list mode 0400, Thomas Gleixner, (Wed Nov 17, 1:37 pm)

Re: [PATCH] kernel/time: Make /proc/timer_list mode 0400, Ingo Molnar, (Thu Nov 18, 1:12 am)

Re: [PATCH] kernel/time: Make /proc/timer_list mode 0400, Eric Dumazet, (Thu Nov 18, 1:28 am)

Re: [PATCH] kernel/time: Make /proc/timer_list mode 0400, Pavel Machek, (Tue Nov 30, 12:21 pm)

Re: [PATCH] kernel/time: Make /proc/timer_list mode 0400, Pavel Machek, (Tue Nov 30, 12:22 pm)


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