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Subject[PATCH percpu#for-next] percpu: clear memory allocated with the km allocator
Percpu allocator should clear memory before returning it but the km
allocator forgot to do it. Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Spotted-by: Peter Zijlstra <peterz@infradead.org>
---
mm/percpu-km.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/mm/percpu-km.c b/mm/percpu-km.c
index 7037bc7..89633fe 100644
--- a/mm/percpu-km.c
+++ b/mm/percpu-km.c
@@ -35,7 +35,11 @@

static int pcpu_populate_chunk(struct pcpu_chunk *chunk, int off, int size)
{
- /* noop */
+ unsigned int cpu;
+
+ for_each_possible_cpu(cpu)
+ memset((void *)pcpu_chunk_addr(chunk, cpu, 0) + off, 0, size);
+
return 0;
}

--
1.7.1


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