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

From: Larry Finger
Date: Tue Jun 16 2015 - 22:43:43 EST

On 06/16/2015 04:07 PM, Martin KaFai Lau wrote:
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.

Do you mean that the subject should be changed?


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