User large enough buffer to read /proc/litmus/release_masterpgm

The string 'NO_CPU' needs to fit into the buffer.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/migration.c b/src/migration.c
index 152d81b..5de81d5 100644
--- a/src/migration.c
+++ b/src/migration.c
@@ -11,7 +11,7 @@ extern ssize_t read_file(const char* fname, void* buf, size_t maxlen);
 int release_master()
 {
         static const char NO_CPU[] = "NO_CPU";
-        char buf[5] = {0}; /* up to 9999 CPUs */
+        char buf[7] = {0}; /* up to 999999 CPUs */
         int master = -1;
 
         int ret = read_file("/proc/litmus/release_master", &buf, sizeof(buf)-1);