[asan] asan_allocator2: do less work under the quarantine lock; make the strcasecmp test more resistant to the contents of unaddressable memory 

llvm-svn: 172048

llvm-svn: 172045

Fixes using ubsan on shared libraries in linux, for example.

llvm-svn: 172041

llvm-svn: 171981

[asan] make the slow unwinder a bit more robust. The unittests pass with fast_unwind_on_fatal=0, but I still observe some differences between the two unwinders

llvm-svn: 171973

llvm-svn: 171970

llvm-svn: 171968

llvm-svn: 171967

llvm-svn: 171958

Need a more reliable way to check for support of this intrinsic.

llvm-svn: 171955

llvm-svn: 171948

llvm-svn: 171802

llvm-svn: 171342

Fixed version of r171273.

llvm-svn: 171278

Original commit message:
[ubsan] Don't suggest casting to unsigned for unsigned unary minus overflow.

llvm-svn: 171277

llvm-svn: 171273

llvm-svn: 171265

llvm-svn: 171223

[asan] add a new interface function __asan_describe_address, useful for running asan-ified binary under a debugger (e.g. gdb)

llvm-svn: 171217

llvm-svn: 171200

llvm-svn: 171199

[asan] implement more strict checking for memset/etc parameters. Instead of checking the first and the last byte, we check the entire shadow region. This costs ~10 slowdown for the instrumented functions. Motivated by a nasty memset-buffer-overflow-by-140-bytes in chrome which was reported as a use-after-free or not at all

llvm-svn: 171198

llvm-svn: 171188

[TSan] Blacklist test: Rename blacklisted function. Make this test work for custom TSan testing script.

llvm-svn: 171186

llvm-svn: 171185

llvm-svn: 171181

llvm-svn: 171161

Define COMPILER_RT_CAN_EXECUTE_TESTS variable on platforms where we can produce working binaries and use it in build rules for sanitizers tests

llvm-svn: 171160

llvm-svn: 171151

llvm-svn: 171147

[asan] relax asan/lit_tests/malloc_delete_mismatch.cc to make it pass on Mac 10.7 (where extra frames creep in between malloc and main)

llvm-svn: 171145

[asan/tsan] when unmapping a chunk of user memory, apply madvise(MADV_DONTNEED) to the corresponding chunk of shadow memory. Also update sanitizer_allocator64_testlib.cc

llvm-svn: 171144

llvm-svn: 171112

[asan] asan_allocator2: do not align the requested size to the redzone size (saves a bit more memory)

llvm-svn: 171111

[asan] asan_allocator2: implement adaptive redzones. Now with asan_allocator2 allocations <= 48 bytes have 16 byte redzone, allocations of 48-96 bytes -- have 32 bytes redzone, etc (max redzone is 2048). If ASAN_OPTIONS=redzone=n is set, it changes the minimal redzone size

llvm-svn: 171107

llvm-svn: 171106

llvm-svn: 171105

llvm-svn: 171104

Check for conflicting memory mappings before attempting to map shadow.
Helps avoid segfault on Linux with disabled ASLR.

llvm-svn: 171100

[asan] asan_allocator2: by default use the StackDepot to store the stack traces instead of storing them in the redzones

llvm-svn: 171099