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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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