[PATCH] D52900: [PowerPC]Disable randomized address space on Linux ppc64le
Lei Huang via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Oct 9 11:59:22 PDT 2018
lei updated this revision to Diff 168850.
lei added a comment.
Warning message updated.
https://reviews.llvm.org/D52900
Files:
compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
Index: compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
===================================================================
--- compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
+++ compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
@@ -2013,6 +2013,17 @@
Printf("This sanitizer is not compatible with enabled ASLR\n");
Die();
}
+#elif SANITIZER_PPC64V2
+ // Disable ASLR for Linux PPC64LE.
+ int old_personality = personality(0xffffffff);
+ if (old_personality != -1 && (old_personality & ADDR_NO_RANDOMIZE) == 0) {
+ VReport(1, "WARNING: Program is being run with address space layout "
+ "randomization (ASLR) enabled which prevents the thread and "
+ "memory sanitizers from working on powerpc64le.\n"
+ "ASLR will be disabled and the program re-executed.\n");
+ CHECK_NE(personality(old_personality | ADDR_NO_RANDOMIZE), -1);
+ ReExec();
+ }
#else
// Do nothing
#endif
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