[PATCH] D37366: Fix check-llvm on kernel 4.9+ with asan or msan

[Vitaly Buka via Phabricator via llvm-commits]

vitalybuka created this revision.

Before https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?h=v4.9.46&id=84638335900f1995495838fe1bd4870c43ec1f67
test worked because memory allocated with mmap was not counted against RLIMIT_DATA.


https://reviews.llvm.org/D37366

Files:
  tools/bugpoint/bugpoint.cpp


Index: tools/bugpoint/bugpoint.cpp
===================================================================
--- tools/bugpoint/bugpoint.cpp
+++ tools/bugpoint/bugpoint.cpp
@@ -169,6 +169,11 @@
       MemoryLimit = 800;
     else
       MemoryLimit = 400;
+#if LLVM_ADDRESS_SANITIZER_BUILD || LLVM_MEMORY_SANITIZER_BUILD
+    // Starting from kernel 4.9 memory allocated with mmap is counted against
+    // RLIMIT_DATA. Sanitizers need to allocate tens of terabytes for shadow.
+    MemoryLimit = 0;
+#endif
   }
 
   BugDriver D(argv[0], FindBugs, TimeoutValue, MemoryLimit, UseValgrind,


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