In ss_execute_command(), we should check whether argp is null before 
accessing it,
otherwise the null potinter dereference error may occur.

Signed-off-by: zhanchengbin <redacted>
---
  lib/ss/execute_cmd.c | 2 ++
  1 file changed, 2 insertions(+)

diff --git a/lib/ss/execute_cmd.c b/lib/ss/execute_cmd.c
index d443a468..b6e4a5dc 100644
--- a/lib/ss/execute_cmd.c
+++ b/lib/ss/execute_cmd.c

@@ -171,6 +171,8 @@ int ss_execute_command(int sci_idx, register char 

*argv[])
  	for (argp = argv; *argp; argp++)
  		argc++;
  	argp = (char **)malloc((argc+1)*sizeof(char *));
+	if (argp == NULL)
+		return (SS_ET_COMMAND_NOT_FOUND);
  	for (i = 0; i <= argc; i++)
  		argp[i] = argv[i];
  	i = really_execute_command(sci_idx, argc, &argp);
-- 
2.27.0