3.3-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Catalin Marinas <[email protected]>

commit 100d13c3b5b9410f604b86f5e0a34da64b8cf659 upstream.

Kmemleak tracks the percpu allocations via a specific API and the
originally allocated areas must be removed from kmemleak (via
kmemleak_free). The code was already doing this for SMP systems.

Reported-by: Sami Liedes <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Christoph Lameter <[email protected]>
Signed-off-by: Catalin Marinas <[email protected]>
Signed-off-by: Tejun Heo <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 mm/percpu.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1895,6 +1895,8 @@ void __init setup_per_cpu_areas(void)
        fc = __alloc_bootmem(unit_size, PAGE_SIZE, __pa(MAX_DMA_ADDRESS));
        if (!ai || !fc)
                panic("Failed to allocate memory for percpu areas.");
+       /* kmemleak tracks the percpu allocations separately */
+       kmemleak_free(fc);
 
        ai->dyn_size = unit_size;
        ai->unit_size = unit_size;


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