[PATCH] D100911: scudo: Make prepareTaggedChunk() and resizeTaggedChunk() generic.

Vitaly Buka via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Tue Apr 20 16:31:30 PDT 2021


vitalybuka added a reviewer: vitalybuka.
vitalybuka added inline comments.


================
Comment at: compiler-rt/lib/scudo/standalone/combined.h:1146
+    uptr UntaggedNewPtr = untagPointer(RoundNewPtr);
+    if (UntaggedNewPtr != BlockEnd)
+      storeTag(UntaggedNewPtr);
----------------
Why we don't tag entire unused tail? It may detect UseAfterFree.


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https://reviews.llvm.org/D100911



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