mds/Server.cc: fix possible NULL pointer dereference

CID 1019555 (#1 of 1): Dereference after null check (FORWARD_NULL)
  var_deref_model: Passing null pointer "in" to function
  "Server::_need_force_journal(CInode *, bool)", which dereferences it.

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>

diff --git a/src/mds/Server.cc b/src/mds/Server.cc
index d97047d6d49baa8193b3d96b1f1966e71657fead..c9fac424f6f80d44ddb33f477d7198b80339f3b4 100644 (file)
--- a/src/mds/Server.cc
+++ b/src/mds/Server.cc
@@ -6943,7 +6943,7 @@ void Server::do_rename_rollback(bufferlist &rbl, int master, MDRequest *mdr)
   bool force_journal_dest = false;
   if (in && in->is_dir() && srcdn->authority().first != whoami)
     force_journal_src = _need_force_journal(in, false);
-  if (target && target->is_dir())
+  if (in && target && target->is_dir())
     force_journal_dest = _need_force_journal(in, true);
   
   version_t srcdnpv = 0;