Re: [PATCH] powerpc: fix memory corruption by pnv_alloc_idle_core_states

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On Fri, 2015-04-10 at 12:11 +0530, Preeti U Murthy wrote:
> From: Jan Stancek <jstancek@xxxxxxxxxx>
> 
> commit d52356e7f48e400ca258c6763a232a92fa82ff68 upstream
> 
> Space allocated for paca is based off nr_cpu_ids,
> but pnv_alloc_idle_core_states() iterates paca with
> cpu_nr_cores()*threads_per_core, which is using NR_CPUS.
> 
> This causes pnv_alloc_idle_core_states() to write over memory,
> which is outside of paca array and may later lead to various panics.
> 
> Bugzilla: https://bugzilla.linux.ibm.com/show_bug.cgi?id=123238

Please don't include links to sites that aren't publically available.

cheers


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