mm/memblock.c: call kmemleak directly from memblock_(alloc|free)
Kmemleak could ignore memory blocks allocated via memblock_alloc()
leading to false positives during scanning. This patch adds the
corresponding callbacks and removes kmemleak_free_* calls in
mm/nobootmem.c to avoid duplication.
The kmemleak_alloc() in mm/nobootmem.c is kept since
__alloc_memory_core_early() does not use memblock_alloc() directly.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/memblock.c b/mm/memblock.c
index 0aa0d2b..6d2f219 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -691,6 +691,7 @@
(unsigned long long)base + size - 1,
(void *)_RET_IP_);
+ kmemleak_free_part(__va(base), size);
return memblock_remove_range(&memblock.reserved, base, size);
}
@@ -1043,9 +1044,14 @@
align = SMP_CACHE_BYTES;
found = memblock_find_in_range_node(size, align, start, end, nid);
- if (found && !memblock_reserve(found, size))
+ if (found && !memblock_reserve(found, size)) {
+ /*
+ * The min_count is set to 0 so that memblock allocations are
+ * never reported as leaks.
+ */
+ kmemleak_alloc(__va(found), size, 0, 0);
return found;
-
+ }
return 0;
}
