executor: cope with mimmutable(2) on OpenBSD
Pages residing in the BSS section are by now flagged as immutable on OpenBSD.
Meaning that their corresponding permissions cannot change. The input_data
therefore needs to be explicitly marked as mutable. Should hopefully bring
syzbot on OpenBSD back.
diff --git a/executor/executor.cc b/executor/executor.cc
index 61e669f..47ecdad 100644
--- a/executor/executor.cc
+++ b/executor/executor.cc
@@ -37,6 +37,12 @@
#define __thread __declspec(thread)
#endif
+#if GOOS_openbsd
+#define MUTABLE __attribute__((section(".openbsd.mutable")))
+#else
+#define MUTABLE
+#endif
+
#ifndef GIT_REVISION
#define GIT_REVISION "unknown"
#endif
@@ -220,8 +226,7 @@
uint32 completed;
bool is_kernel_64_bit = true;
-ALIGNED(INPUT_DATA_ALIGNMENT)
-static char input_data[kMaxInput];
+MUTABLE ALIGNED(INPUT_DATA_ALIGNMENT) static char input_data[kMaxInput];
// Checksum kinds.
static const uint64 arg_csum_inet = 0;
