os/keyvaluestore: fix valgrind warning on fsid read

Signed-off-by: Sage Weil <sage@redhat.com>

diff --git a/src/os/keyvaluestore/KeyValueStore.cc b/src/os/keyvaluestore/KeyValueStore.cc
index 35eb6f4489f6f86aabe4396255d020eca5975c2e..29ee9c8df33eb9edb4b1f9ee585cf77e019f5771 100644 (file)
--- a/src/os/keyvaluestore/KeyValueStore.cc
+++ b/src/os/keyvaluestore/KeyValueStore.cc
@@ -730,6 +730,7 @@ int KeyValueStore::mkfs()
 int KeyValueStore::read_fsid(int fd, uuid_d *uuid)
 {
   char fsid_str[40];
+  memset(fsid_str, 0, sizeof(fsid_str));
   int ret = safe_read(fd, fsid_str, sizeof(fsid_str));
   if (ret < 0)
     return ret;