[PATCH] D52505: [winasan] Pin the ASan DLL to prevent unloading

[David Major via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL343123: [winasan] Pin the ASan DLL to prevent unloading (authored by dmajor, committed by ).
Herald added subscribers: llvm-commits, delcypher.

Changed prior to commit:
  https://reviews.llvm.org/D52505?vs=167022&id=167154#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D52505

Files:
  compiler-rt/trunk/lib/asan/asan_win.cc


Index: compiler-rt/trunk/lib/asan/asan_win.cc
===================================================================
--- compiler-rt/trunk/lib/asan/asan_win.cc
+++ compiler-rt/trunk/lib/asan/asan_win.cc
@@ -167,6 +167,14 @@
 namespace __asan {
 
 void InitializePlatformInterceptors() {
+  // The interceptors were not designed to be removable, so we have to keep this
+  // module alive for the life of the process.
+  HMODULE pinned;
+  CHECK(GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
+                           GET_MODULE_HANDLE_EX_FLAG_PIN,
+                           (LPCWSTR)&InitializePlatformInterceptors,
+                           &pinned));
+
   ASAN_INTERCEPT_FUNC(CreateThread);
   ASAN_INTERCEPT_FUNC(SetUnhandledExceptionFilter);
   CHECK(::__interception::OverrideFunction("NtTerminateThread",


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D52505.167154.patch
Type: text/x-patch
Size: 828 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20180926/a9655d70/attachment.bin>