kmemleak: Do not report alloc_bootmem blocks as leaks

This patch sets the min_count for alloc_bootmem objects to 0 so that
they are never reported as leaks. This is because many of these blocks
are only referred via the physical address which is not looked up by
kmemleak.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>

1 files changed, 5 insertions, 1 deletions

diff --git a/mm/bootmem.c b/mm/bootmem.c
index 701740c9e81b..555d5d2731c6 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -521,7 +521,11 @@ find_block:
                 region = phys_to_virt(PFN_PHYS(bdata->node_min_pfn) +
                                 start_off);
                 memset(region, 0, size);
-                kmemleak_alloc(region, size, 1, 0);
+                /*
+                 * The min_count is set to 0 so that bootmem allocated blocks
+                 * are never reported as leaks.
+                 */
+                kmemleak_alloc(region, size, 0, 0);
                 return region;
         }