[compiler-rt] 32adf10 - [scudo] Add GWP-ASan state/metadata pointer proxies.

[Mitch Phillips via llvm-commits]

Author: Mitch Phillips
Date: 2021-08-11T09:21:48-07:00
New Revision: 32adf108c8edd989caf9392131a5ebaf9de762f2

URL: https://github.com/llvm/llvm-project/commit/32adf108c8edd989caf9392131a5ebaf9de762f2
DIFF: https://github.com/llvm/llvm-project/commit/32adf108c8edd989caf9392131a5ebaf9de762f2.diff

LOG: [scudo] Add GWP-ASan state/metadata pointer proxies.

Provide accessor proxies for the gwp-asan regions that are useful in
symbolizing dumps offline. Should be useful for Fuchsia to be able to
locate these internal pointers to stash the data in a minidump.

Reviewed By: cryptoad

Differential Revision: https://reviews.llvm.org/D107909

Added: 
    

Modified: 
    compiler-rt/lib/scudo/standalone/combined.h

Removed: 
    


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diff  --git a/compiler-rt/lib/scudo/standalone/combined.h b/compiler-rt/lib/scudo/standalone/combined.h
index fd5360ce0f55a..922c2e50bb0b4 100644
--- a/compiler-rt/lib/scudo/standalone/combined.h
+++ b/compiler-rt/lib/scudo/standalone/combined.h
@@ -205,6 +205,16 @@ class Allocator {
 #endif // GWP_ASAN_HOOKS
   }
 
+#ifdef GWP_ASAN_HOOKS
+  const gwp_asan::AllocationMetadata *getGwpAsanAllocationMetadata() {
+    return GuardedAlloc.getMetadataRegion();
+  }
+
+  const gwp_asan::AllocatorState *getGwpAsanAllocatorState() {
+    return GuardedAlloc.getAllocatorState();
+  }
+#endif // GWP_ASAN_HOOKS
+
   ALWAYS_INLINE void initThreadMaybe(bool MinimalInit = false) {
     TSDRegistry.initThreadMaybe(this, MinimalInit);
   }