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-rw-r--r--mm/memory_hotplug.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 78dba9f04b5b..c46887b5a11e 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -498,7 +498,9 @@ static pg_data_t __ref *hotadd_new_pgdat(int nid, u64 start)
 	 * The node we allocated has no zone fallback lists. For avoiding
 	 * to access not-initialized zonelist, build here.
 	 */
+	mutex_lock(&zonelists_mutex);
 	build_all_zonelists(NULL);
+	mutex_unlock(&zonelists_mutex);
 
 	return pgdat;
 }