mds: MDSMap: adjust buffer size for uint64 values with more than 5 chars

Fixes: #6620
Signed-off-by: Joao Eduardo Luis <joao.luis@inktank.com>
(cherry picked from commit 0e8182edd850f061421777988974efbaa3575b9f)

diff --git a/src/mds/MDSMap.cc b/src/mds/MDSMap.cc
index 1646a134ad58e740b15c0a49fec6e1b9c0e027d8..cd6ff346fd6db5a1144deba01bb0ea8feaba8b71 100644 (file)
--- a/src/mds/MDSMap.cc
+++ b/src/mds/MDSMap.cc
@@ -114,7 +114,7 @@ void MDSMap::dump(Formatter *f) const
   f->close_section();
   f->open_object_section("info");
   for (map<uint64_t,mds_info_t>::const_iterator p = mds_info.begin(); p != mds_info.end(); ++p) {
-    char s[10];
+    char s[25]; // 'gid_' + len(str(ULLONG_MAX)) + '\0'
     sprintf(s, "gid_%llu", (long long unsigned)p->first);
     f->open_object_section(s);
     p->second.dump(f);