From 28878c69e0c275e42b40bc2ab17bdca7dd1a989e Mon Sep 17 00:00:00 2001
From: Jiangen Jiao <joeyjiaojg@qq.com>
Date: Wed, 7 Apr 2021 11:28:19 +0800
Subject: android: disable sigaction inside debuggerd

check https://github.com/google/AFL/blob/master/docs/INSTALL#L173
---
 instrumentation/afl-compiler-rt.o.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'instrumentation/afl-compiler-rt.o.c')

diff --git a/instrumentation/afl-compiler-rt.o.c b/instrumentation/afl-compiler-rt.o.c
index 1f003c1e..552bbea8 100644
--- a/instrumentation/afl-compiler-rt.o.c
+++ b/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;
-- 
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