[llvm-branch-commits] [clang-tools-extra] [lld] [libcxx] [compiler-rt] [llvm] [test][hwasan] Implement sanitizer_specific for HWASAN (PR #75280)
Thurston Dang via llvm-branch-commits
llvm-branch-commits at lists.llvm.org
Wed Dec 13 09:19:12 PST 2023
================
@@ -31,6 +31,19 @@ static void make_mem_good(void *p, size_t s) {
static void make_mem_bad(void *p, size_t s) {
__asan_poison_memory_region(p, s);
}
+#elif __has_feature(hwaddress_sanitizer)
+# include <sanitizer/hwasan_interface.h>
+# include <stdlib.h>
+static void check_mem_is_good(void *p, size_t s) {
+ if (__hwasan_test_shadow(p, s) != -1)
+ abort();
+}
+static void make_mem_good(void *p, size_t s) {
+ __hwasan_tag_memory(p, __hwasan_get_tag_from_pointer(p), s);
+}
+static void make_mem_bad(void *p, size_t s) {
+ __hwasan_tag_memory(p, ~__hwasan_get_tag_from_pointer(p), s);
----------------
thurstond wrote:
Is this guaranteed to make memory bad if it's a short granule?
Also, in the rare case where the tag was 255, bitwise NOT results in the confusing tag value of zero.
https://github.com/llvm/llvm-project/pull/75280
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