From 7632b56c8f880a8f86cf049a3785069e1ffd2997 Mon Sep 17 00:00:00 2001
From: Haotian Li <lihaotian9@huawei.com>
Date: Wed, 11 Nov 2020 09:10:38 +0800
Subject: [PATCH] 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>
---
 tools/virtiofsd/passthrough_ll.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c
index 9545a0d174..97485b22b4 100644
--- 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) {