Re: [RFC NEXT] mm: Fix suspicious RCU usage at kernel/sched/core.c:7318

From: Martin KaFai Lau
Date: Tue Jun 16 2015 - 17:07:54 EST

On Mon, Jun 15, 2015 at 04:25:18PM -0500, Larry Finger wrote:
> Additional backtrace lines are truncated. In addition, the above splat is
> followed by several "BUG: sleeping function called from invalid context
> at mm/slub.c:1268" outputs. As suggested by Martin KaFai Lau, these are the
> clue to the fix. Routine kmemleak_alloc_percpu() always uses GFP_KERNEL
> for its allocations, whereas it should use the value input to pcpu_alloc().
Just a minor nit, 'kmemleak_alloc_percpu() should follow the gfp from
per_alloc()' may be a more accurate title to describe the patch.

Acked-by: Martin KaFai Lau <kafai@xxxxxx>
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