From: Kefu Chai <tchaikov@gmail.com>
Date: Fri, 26 Dec 2014 08:28:22 +0000 (+0800)
Subject: AsyncMessenger: reset newly allocated file_events
X-Git-Tag: v0.92~91^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=25cf82e2c89c34d11b4c9d8f8c44c2ac5e4bf039;p=ceph.git

AsyncMessenger: reset newly allocated file_events

* otherwise there is chance that Event could take them as already
  initialized ones even they are filled with random bits from heap.
---

diff --git a/src/msg/async/Event.cc b/src/msg/async/Event.cc
index 75676267b6fc..2aea4ba0303f 100644
--- a/src/msg/async/Event.cc
+++ b/src/msg/async/Event.cc
@@ -120,6 +120,7 @@ int EventCenter::create_file_event(int fd, int mask, EventCallbackRef ctxt)
       lderr(cct) << __func__ << " failed to realloc file_events" << cpp_strerror(errno) << dendl;
       return -errno;
     }
+    memset(file_events+sizeof(FileEvent)*nevent, 0, sizeof(FileEvent)*(new_size-nevent));
     file_events = new_events;
     nevent = new_size;
   }