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Commit a24e0237 authored by Shiraz Hashim's avatar Shiraz Hashim Committed by Patrick Daly
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drivers: dma-contiguous: remove cma regions from kmemleak scan 



cma regions can be allocated for secure use cases where
the virtual mapping is removed. kmemleak scan can try to
scan through this mapping causing mmu faults. Hence free
cma regions from kmemleak scan.

Change-Id: I2cc66423ec9ec539905cc8d07bbc40fa43e695bd
Signed-off-by: default avatarShiraz Hashim <shashim@codeaurora.org>
Signed-off-by: default avatarPatrick Daly <pdaly@codeaurora.org>
parent 23f8a2f5

mm/cma.c

+4 −0
Original line number Diff line number Diff line
@@ -134,6 +134,10 @@ static int __init cma_activate_area(struct cma *cma) 
	spin_lock_init(&cma->mem_head_lock);

#endif



	if (!PageHighMem(pfn_to_page(cma->base_pfn)))

		kmemleak_free_part(__va(cma->base_pfn << PAGE_SHIFT),

				cma->count << PAGE_SHIFT);



	return 0;



err: