diff options
-rw-r--r-- | mm/mempolicy.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index adeb163cd661..68c46da82aac 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -2832,7 +2832,9 @@ int mpol_parse_str(char *str, struct mempolicy **mpol) switch (mode) { case MPOL_PREFERRED: /* - * Insist on a nodelist of one node only + * Insist on a nodelist of one node only, although later + * we use first_node(nodes) to grab a single node, so here + * nodelist (or nodes) cannot be empty. */ if (nodelist) { char *rest = nodelist; @@ -2840,6 +2842,8 @@ int mpol_parse_str(char *str, struct mempolicy **mpol) rest++; if (*rest) goto out; + if (nodes_empty(nodes)) + goto out; } break; case MPOL_INTERLEAVE: |