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-rw-r--r--src/afl-common.c7
-rw-r--r--src/afl-fuzz-init.c1
2 files changed, 8 insertions, 0 deletions
diff --git a/src/afl-common.c b/src/afl-common.c
index 9f6eb564..58fbf765 100644
--- a/src/afl-common.c
+++ b/src/afl-common.c
@@ -149,6 +149,13 @@ void argv_cpy_free(char **argv) {
 
 char **get_qemu_argv(u8 *own_loc, u8 **target_path_p, int argc, char **argv) {
 
+  if (unlikely(getenv("AFL_QEMU_CUSTOM_BIN"))) {
+    WARNF(
+      "AFL_QEMU_CUSTOM_BIN is enabled. "
+      "You must run your target under afl-qemu-trace on your own!");
+    return argv;
+  }
+
   if (!unlikely(own_loc)) { FATAL("BUG: param own_loc is NULL"); }
 
   u8 *tmp, *cp = NULL, *rsl, *own_copy;
diff --git a/src/afl-fuzz-init.c b/src/afl-fuzz-init.c
index ca2f75f1..82c1799e 100644
--- a/src/afl-fuzz-init.c
+++ b/src/afl-fuzz-init.c
@@ -2592,6 +2592,7 @@ void check_binary(afl_state_t *afl, u8 *fname) {
   }
 
   if (afl->afl_env.afl_skip_bin_check || afl->use_wine || afl->unicorn_mode ||
+      (afl->fsrv.qemu_mode && getenv("AFL_QEMU_CUSTOM_BIN")) ||
       afl->non_instrumented_mode) {
 
     return;