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-rw-r--r--instrumentation/afl-compiler-rt.o.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/instrumentation/afl-compiler-rt.o.c b/instrumentation/afl-compiler-rt.o.c
index 723b946b..85ee9f71 100644
--- a/instrumentation/afl-compiler-rt.o.c
+++ b/instrumentation/afl-compiler-rt.o.c
@@ -666,8 +666,8 @@ static void __afl_map_shm(void) {
   }
 
   if (id_str) {
-
-    if ((__afl_dummy_fd[1] = open("/dev/null", O_WRONLY)) < 0) {
+    // /dev/null doesn't work so we use /dev/urandom
+    if ((__afl_dummy_fd[1] = open("/dev/urandom", O_WRONLY)) < 0) {
 
       if (pipe(__afl_dummy_fd) < 0) { __afl_dummy_fd[1] = 1; }