MDCache::handle_discover: fix null pointer deref

CID 716990 (#1 of 1): Dereference null return value (NULL_RETURNS)
 dereference: Dereferencing a pointer that might be null "cur" when calling
 "MDCache::replicate_inode(CInode *, int, ceph::bufferlist &)"

Add assert to check for return value from get_inode() as done in other places.

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

diff --git a/src/mds/MDCache.cc b/src/mds/MDCache.cc
index f90df94efb2f8a57de3982325ac5e5043ebfa68d..14416c62986c9c4afce92bf6a2d010331b8555a7 100644 (file)
--- a/src/mds/MDCache.cc
+++ b/src/mds/MDCache.cc
@@ -10112,6 +10112,7 @@ void MDCache::handle_discover(MDiscover *dis)
            << dendl;
 
     cur = get_inode(dis->get_base_ino());
+    assert(cur);
 
     // add root
     reply->starts_with = MDiscoverReply::INODE;