diff --git a/debian/changelog b/debian/changelog
index 7869a327..2276d4c4 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,4 +1,4 @@
-llvm-toolchain-16 (1:16.0.6-24) UNRELEASED; urgency=medium
+llvm-toolchain-16 (1:16.0.6-24) unstable; urgency=medium
 
   [ Matthias Klose ]
   * Add a stage1 profile to disable curl, grpc and spirv.
diff --git a/debian/patches/asan-allocator.diff b/debian/patches/asan-allocator.diff
new file mode 100644
index 00000000..ff9a4ec1
--- /dev/null
+++ b/debian/patches/asan-allocator.diff
@@ -0,0 +1,22 @@
+diff --git a/compiler-rt/lib/asan/asan_allocator.h b/compiler-rt/lib/asan/asan_allocator.h
+index 0b4dbf03bb9d53..6a12a6c6025283 100644
+--- a/compiler-rt/lib/asan/asan_allocator.h
++++ b/compiler-rt/lib/asan/asan_allocator.h
+@@ -143,11 +143,15 @@ typedef DefaultSizeClassMap SizeClassMap;
+ const uptr kAllocatorSpace = ~(uptr)0;
+ const uptr kAllocatorSize  =  0x8000000000ULL;  // 500G
+ typedef DefaultSizeClassMap SizeClassMap;
+-# else
++#  elif SANITIZER_APPLE
+ const uptr kAllocatorSpace = 0x600000000000ULL;
+ const uptr kAllocatorSize  =  0x40000000000ULL;  // 4T.
+ typedef DefaultSizeClassMap SizeClassMap;
+-# endif
++#  else
++const uptr kAllocatorSpace = 0x500000000000ULL;
++const uptr kAllocatorSize = 0x40000000000ULL;  // 4T.
++typedef DefaultSizeClassMap SizeClassMap;
++#  endif
+ template <typename AddressSpaceViewTy>
+ struct AP64 {  // Allocator64 parameters. Deliberately using a short name.
+   static const uptr kSpaceBeg = kAllocatorSpace;