os/bluestore:fixed bug for judging the return value in _open_alloc()

Signed-off-by: yonghengdexin735 <zhang.zezhu@zte.com.cn>

diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index d0039a34823f01b146666efa2b869dbe64e9d82c..d0ba78f7af6bb2effdff3d88d6bac1b058ddd51f 100644 (file)
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -3760,6 +3760,13 @@ int BlueStore::_open_alloc()
   alloc = Allocator::create(cct, cct->_conf->bluestore_allocator,
                             bdev->get_size(),
                             min_alloc_size);
+  if (!alloc) {
+    lderr(cct) << __func__ << " Allocator::unknown alloc type "
+               << cct->_conf->bluestore_allocator
+               << dendl;
+    return -EINVAL;
+  }
+
   uint64_t num = 0, bytes = 0;
 
   // initialize from freelist