LU-5751 libcfs: check mask returned by cpumask_of_node

[fs/lustre-release.git] / libcfs / libcfs / linux / linux-cpu.c

diff --git a/libcfs/libcfs/linux/linux-cpu.c b/libcfs/libcfs/linux/linux-cpu.c
index 2da255e..ea0b087 100644 (file)
--- a/libcfs/libcfs/linux/linux-cpu.c
+++ b/libcfs/libcfs/linux/linux-cpu.c
@@ -130,7 +130,12 @@ EXPORT_SYMBOL(cfs_cpu_ht_nsiblings);
 void
 cfs_node_to_cpumask(int node, cpumask_t *mask)
 {
-       cpumask_copy(mask, cpumask_of_node(node));
+       const cpumask_t *tmp = cpumask_of_node(node);
+
+       if (tmp != NULL)
+               cpumask_copy(mask, tmp);
+       else
+               cpumask_clear(mask);
 }
 EXPORT_SYMBOL(cfs_node_to_cpumask);