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| author | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2015-10-08 21:35:34 +0000 |
|---|---|---|
| committer | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2015-10-08 21:35:34 +0000 |
| commit | 0bee2d927c97454e629b0789c7f4e3d509cf4178 (patch) | |
| tree | 059f7c7be0e3140acf62c6cf6765e196028696cc /test/msan/mmap.cc | |
| parent | 1d9c340a24ab792b27461b1f08601b33dd4e0c9d (diff) | |
New MSan mapping layout (compiler-rt part).
This is an implementation of
https://github.com/google/sanitizers/issues/579
It has a number of advantages over the current mapping:
* Works for non-PIE executables.
* Does not require ASLR; as a consequence, debugging MSan programs in
gdb no longer requires "set disable-randomization off".
* Supports linux kernels >=4.1.2.
* The code is marginally faster and smaller.
This is an ABI break. We never really promised ABI stability, but
this patch includes a courtesy escape hatch: a compile-time macro
that reverts back to the old mapping layout.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@249754 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/msan/mmap.cc')
| -rw-r--r-- | test/msan/mmap.cc | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/test/msan/mmap.cc b/test/msan/mmap.cc index 250ce343c..962836cd6 100644 --- a/test/msan/mmap.cc +++ b/test/msan/mmap.cc @@ -15,7 +15,9 @@ bool AddrIsApp(void *p) { #if defined(__FreeBSD__) && defined(__x86_64__) return addr < 0x010000000000ULL || addr >= 0x600000000000ULL; #elif defined(__x86_64__) - return addr >= 0x600000000000ULL; + return (addr >= 0x000000000000ULL && addr < 0x010000000000ULL) || + (addr >= 0x510000000000ULL && addr < 0x600000000000ULL) || + (addr >= 0x700000000000ULL && addr < 0x800000000000ULL); #elif defined(__mips64) return addr >= 0x00e000000000ULL; #elif defined(__powerpc64__) |