1 files changed, 4 insertions, 0 deletions

diff --git a/mm/percpu.c b/mm/percpu.c
index e5c4cbda6026..a64133f8af45 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1347,6 +1347,10 @@ struct pcpu_alloc_info * __init pcpu_build_alloc_info(
         struct pcpu_alloc_info *ai;
         unsigned int *cpu_map;
 
+        /* this function may be called multiple times */
+        memset(group_map, 0, sizeof(group_map));
+        memset(group_cnt, 0, sizeof(group_map));
+
         /*
          * Determine min_unit_size, alloc_size and max_upa such that
          * alloc_size is multiple of atom_size and is the smallest