[scudo] Don't enabled MTE for small alignment

Differential Revision: https://reviews.llvm.org/D105954
2021-07-13 18:11:57 -07:00 · 2021-07-13 18:11:57 -07:00 · 14362bf1b2
parent fbab8e6f10
commit 14362bf1b2
1 changed files with 2 additions and 1 deletions
--- a/compiler-rt/lib/scudo/standalone/memtag.h
+++ b/compiler-rt/lib/scudo/standalone/memtag.h
@ -319,7 +319,8 @@ inline void *addFixedTag(void *Ptr, uptr Tag) {

 template <typename Config>
 inline constexpr bool allocatorSupportsMemoryTagging() {
-  return archSupportsMemoryTagging() && Config::MaySupportMemoryTagging;
+  return archSupportsMemoryTagging() && Config::MaySupportMemoryTagging &&
+         (1 << SCUDO_MIN_ALIGNMENT_LOG) >= archMemoryTagGranuleSize();
 }

 } // namespace scudo