From: Kefu Chai <kchai@redhat.com>
Date: Fri, 3 Mar 2017 08:41:51 +0000 (+0800)
Subject: librados: rados_inconsistent_pg_list() check "buf" param for null before copying... 
X-Git-Tag: v12.0.1~161^2~1
X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=8209bf0f285b93960b3903be9aed7abb1eca62af;p=ceph-ci.git

librados: rados_inconsistent_pg_list() check "buf" param for null before copying to it

Signed-off-by: Kefu Chai <kchai@redhat.com>
---

diff --git a/src/librados/librados.cc b/src/librados/librados.cc
index b13118787f8..d2f7b280bd4 100644
--- a/src/librados/librados.cc
+++ b/src/librados/librados.cc
@@ -3002,7 +3002,7 @@ CEPH_RADOS_API int rados_inconsistent_pg_list(rados_t cluster, int64_t pool_id,
     ss << pg;
     auto s = ss.str();
     unsigned rl = s.length() + 1;
-    if (len >= rl) {
+    if (b && len >= rl) {
       tracepoint(librados, rados_inconsistent_pg_list_pg, s.c_str());
       strncat(b, s.c_str(), rl);
       b += rl;