From: Gui Hecheng <guihecheng@cmss.chinamobile.com>
Date: Tue, 7 Feb 2017 03:16:11 +0000 (+0800)
Subject: librbd: fix segfault on EOPNOTSUPP returned while fetching snapshot timestamp
X-Git-Tag: v12.0.1~456^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=9a43a1205f1d69e1bc52bce791687d2ab6c01c2d;p=ceph.git

librbd: fix segfault on EOPNOTSUPP returned while fetching snapshot timestamp

Fixes: http://tracker.ceph.com/issues/18839

Signed-off-by: Gui Hecheng <guihecheng@cmss.chinamobile.com>
---

diff --git a/src/librbd/image/RefreshRequest.cc b/src/librbd/image/RefreshRequest.cc
index 16a76def4e3b..dabd094c6e94 100644
--- a/src/librbd/image/RefreshRequest.cc
+++ b/src/librbd/image/RefreshRequest.cc
@@ -474,6 +474,7 @@ Context *RefreshRequest<I>::handle_v2_get_snap_timestamps(int *result) {
     send_v2_get_mutable_metadata();
     return nullptr;
   } else if (*result == -EOPNOTSUPP) {
+    m_snap_timestamps = std::vector<utime_t>(m_snap_names.size(), utime_t());
     // Ignore it means no snap timestamps are available
   } else if (*result < 0) {
     lderr(cct) << "failed to retrieve snapshots: " << cpp_strerror(*result)