[compiler-rt] lsan: fix allocator on arm64 Android (PR #165656)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-compiler-rt-sanitizer

Author: None (quic-likaid)

<details>
<summary>Changes</summary>

The default config is too large for arm64 Android devices, which are typically configured with 39-bit address space. This change brings it inline with sanitizer_allocator_test.cpp.

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Full diff: https://github.com/llvm/llvm-project/pull/165656.diff


1 Files Affected:

- (modified) compiler-rt/lib/lsan/lsan_allocator.h (+4) 


``````````diff
diff --git a/compiler-rt/lib/lsan/lsan_allocator.h b/compiler-rt/lib/lsan/lsan_allocator.h
index 556b9f56a4a4a..3a358cb4505c1 100644
--- a/compiler-rt/lib/lsan/lsan_allocator.h
+++ b/compiler-rt/lib/lsan/lsan_allocator.h
@@ -93,6 +93,10 @@ using LSanSizeClassMap = DefaultSizeClassMap;
 const uptr kAllocatorSpace = 0x600000000000ULL;
 const uptr kAllocatorSize  = 0x40000000000ULL;  // 4T.
 using LSanSizeClassMap = DefaultSizeClassMap;
+#  elif SANITIZER_ANDROID && defined(__aarch64__)
+const uptr kAllocatorSpace = 0x3000000000ULL;
+const uptr kAllocatorSize  = 0x2000000000ULL;
+using LSanSizeClassMap = VeryCompactSizeClassMap;
 #  else
 const uptr kAllocatorSpace = 0x500000000000ULL;
 const uptr kAllocatorSize = 0x40000000000ULL;  // 4T.

``````````

</details>


https://github.com/llvm/llvm-project/pull/165656