virtiofsd: check whether strdup lo.source return NULL in main func

In main func, strdup lo.source may fail. So check whether strdup
lo.source return NULL before using it.

Signed-off-by: Haotian Li <lihaotian9@huawei.com>
Signed-off-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>
Message-Id: <f1e48ca8-d6de-d901-63c8-4f4024bda518@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c
index 9545a0d174d3af49953b0a9220b9712b2658c3ae..97485b22b4114228e622a0b256d9a9bfedd0ca9e 100644 (file)
--- a/tools/virtiofsd/passthrough_ll.c
+++ b/tools/virtiofsd/passthrough_ll.c
@@ -3517,6 +3517,10 @@ int main(int argc, char *argv[])
         }
     } else {
         lo.source = strdup("/");
+        if (!lo.source) {
+            fuse_log(FUSE_LOG_ERR, "failed to strdup source\n");
+            goto err_out1;
+        }
     }
 
     if (lo.xattrmap) {