From 9099daed9c6991a512c1f74b92ec49daf9408cda Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Tue, 11 Oct 2016 13:55:11 -0700 Subject: mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping Some of the kmemleak_*() callbacks in memblock, bootmem, CMA convert a physical address to a virtual one using __va(). However, such physical addresses may sometimes be located in highmem and using __va() is incorrect, leading to inconsistent object tracking in kmemleak. The following functions have been added to the kmemleak API and they take a physical address as the object pointer. They only perform the corresponding action if the address has a lowmem mapping: kmemleak_alloc_phys kmemleak_free_part_phys kmemleak_not_leak_phys kmemleak_ignore_phys The affected calling places have been updated to use the new kmemleak API. Link: http://lkml.kernel.org/r/1471531432-16503-1-git-send-email-catalin.marinas@arm.com Signed-off-by: Catalin Marinas Reported-by: Vignesh R Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/nobootmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'mm/nobootmem.c') diff --git a/mm/nobootmem.c b/mm/nobootmem.c index ba609b684d7a..487dad610731 100644 --- a/mm/nobootmem.c +++ b/mm/nobootmem.c @@ -84,7 +84,7 @@ void __init free_bootmem_late(unsigned long addr, unsigned long size) { unsigned long cursor, end; - kmemleak_free_part(__va(addr), size); + kmemleak_free_part_phys(addr, size); cursor = PFN_UP(addr); end = PFN_DOWN(addr + size); -- cgit v1.2.3