[PATCH 25/29] mds: check null context in CDir::fetch()

["Yan, Zheng" <zheng.z.yan@xxxxxxxxx>]

From: "Yan, Zheng" <zheng.z.yan@xxxxxxxxx>

Signed-off-by: Yan, Zheng <zheng.z.yan@xxxxxxxxx>
---
 src/mds/CDir.cc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/mds/CDir.cc b/src/mds/CDir.cc
index 91636cc..22cdf48 100644
--- a/src/mds/CDir.cc
+++ b/src/mds/CDir.cc
@@ -1351,8 +1351,11 @@ void CDir::fetch(Context *c, const string& want_dn, bool ignore_authpinnability)
   assert(!is_complete());
 
   if (!can_auth_pin() && !ignore_authpinnability) {
-    dout(7) << "fetch waiting for authpinnable" << dendl;
-    add_waiter(WAIT_UNFREEZE, c);
+    if (c) {
+      dout(7) << "fetch waiting for authpinnable" << dendl;
+      add_waiter(WAIT_UNFREEZE, c);
+    } else
+      dout(7) << "fetch not authpinnable and no context" << dendl;
     return;
   }
 
-- 
1.7.11.7

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