android: disable sigaction inside debuggerd
check
MODIFY
instrumentation/afl-compiler-rt.o.c
instrumentation/afl-compiler-rt.o.c
@@ -1144,6 +1144,18 @@ void __afl_manual_init(void) {
__attribute__((constructor())) void __afl_auto_init(void) {
+#ifdef __ANDROID__
+ // Disable handlers in linker/debuggerd, check include/debuggerd/handler.h
+ signal(SIGABRT, SIG_DFL);
+ signal(SIGBUS, SIG_DFL);
+ signal(SIGFPE, SIG_DFL);
+ signal(SIGILL, SIG_DFL);
+ signal(SIGSEGV, SIG_DFL);
+ signal(SIGSTKFLT, SIG_DFL);
+ signal(SIGSYS, SIG_DFL);
+ signal(SIGTRAP, SIG_DFL);
+#endif
+
if (getenv("AFL_DISABLE_LLVM_INSTRUMENTATION")) return;
if (getenv(DEFER_ENV_VAR)) return;

android: disable sigaction inside debuggerd

check https://github.com/google/AFL/blob/master/docs/INSTALL#L173