From bd1648e707b85b79d816fd8737909789d7d2a09c Mon Sep 17 00:00:00 2001
From: mark0 <757410129@qq.com>
Date: Fri, 28 Jul 2023 17:32:59 +0800
Subject: fix the file descriptor without determining null

---
 src/afl-showmap.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/afl-showmap.c')

diff --git a/src/afl-showmap.c b/src/afl-showmap.c
index b82bcd72..7a639cf6 100644
--- a/src/afl-showmap.c
+++ b/src/afl-showmap.c
@@ -1611,6 +1611,7 @@ int main(int argc, char **argv_orig, char **envp) {
   if (in_dir || in_filelist) {
 
     afl->fsrv.dev_urandom_fd = open("/dev/urandom", O_RDONLY);
+    if (afl->fsrv.dev_urandom_fd < 0) { PFATAL("Unable to open /dev/urandom"); }
     afl->afl_env.afl_custom_mutator_library =
         getenv("AFL_CUSTOM_MUTATOR_LIBRARY");
     afl->afl_env.afl_python_module = getenv("AFL_PYTHON_MODULE");
-- 
cgit 1.4.1