llvm-svn: 183429

Leak annotation similar to HeapChecker's IgnoreObject().

llvm-svn: 183412

llvm-svn: 183390

Summary:
With this change, the user may safely call __asan_get_ownership()
from malloc/free hooks and assume it would return "true". If there is a
realloc/free race, free hook might be called twice, but I think it's acceptable,
as it's a data race and would later be reported anyway.

This change also fixes a bug when failing realloc incorrectly marked the
original memory as "quarantinned".

Reviewers: timurrrr, kcc, samsonov

Reviewed By: samsonov

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D913

llvm-svn: 183220

llvm-svn: 183218

Objects allocated after a call to __lsan_disable() will be treated as
live memory. Also add a ScopedDisabler.

llvm-svn: 183099

llvm-svn: 182994

In this CL all old tests are removed and one LIT test is added.

llvm-svn: 182730

llvm-svn: 182470

llvm-svn: 182465

llvm-svn: 182379

See https://code.google.com/p/address-sanitizer/issues/detail?id=187 for the details

llvm-svn: 182255

We need this to avoid races when ASan and LSan are used together.

llvm-svn: 182252

Also fix wrong alignment maths and an outdated comment

llvm-svn: 182238

[sanitizer] factor out ByteMap from SizeClassAllocator32 so that it can be later replaced with a more memory-efficient implementation on 64-bit.

llvm-svn: 182234

llvm-svn: 182198

llvm-svn: 181881

Some flags that are common to ASan/MSan/TSan/LSan have been moved to
sanitizer_common.

llvm-svn: 181193

llvm-svn: 178758

[asan] fill first 4K of malloc-ed memory with garbage, implement flags max_malloc_fill_size and malloc_fill_byte

llvm-svn: 178757

[ASan] Speed-up initialization-order checking: create and use fast versions of PoisonShadow functions, store copies of __asan_global descriptors in a vector instead of list of pointers. This gives 3x speedup on both benchmarks and real binaries with lots of globals.

llvm-svn: 178239

llvm-svn: 177746

Band-aid fix for the Windows build caused by r177710. Long-term, atomic_compare_exchange_strong should be a template on Windows too...

llvm-svn: 177745

[ASan] Fix an error on invalid deallocation in ASan allocator. When ASan checks if memory freed by user was indeed previously allocated, it first does an atomic write to presumed location of chunk header. This is wrong, as if the free is invalid, we may overwrite some valuable data (like other fields of the chunk header). Fix this by using atomic_compare_exchange instead.

llvm-svn: 177710

[ASan] Switch ASan to generic ThreadRegistry from sanitizer_common. Delete ASan-specific AsanThreadRegistry.

llvm-svn: 177634

llvm-svn: 177508

[ASan] Move GetCurrentThread/SetCurrentThread from AsanThreadRegistry class into plain functions: they don't actually use registry

llvm-svn: 177501

[asan] use 4Tb of address space for the asan allocator instead of 1Tb. This increases the memory available for a single size class from 16Gb to 64Gb. The total VM footprint becomes 20Tb

llvm-svn: 176857

[asan] if calloc returns a freshly-mmaped memory, don't clear it with memset. Speeds up calloc-intensive code

llvm-svn: 176185

llvm-svn: 176085

llvm-svn: 174707

Switch to allocator2 on Darwin.

llvm-svn: 174603

In case of partial right OOB, ASan was reporting
  X is located 0 bytes to the right of [A, B)
where X was actually inside [A, B).

With this change, ASan will report B as the error address in such case.

llvm-svn: 174373

[ASan] Split ASan interface header into private and public parts. Add a test that makes sure users can include interface header

llvm-svn: 174058

[ASan] fix deallocation hook in allocator2: according to specification, dealloc hook should be called before deallocating memory

llvm-svn: 173778

[ASan] Do allocate memory even for zero-size allocation requests. Explain why we have to do this in comments.

llvm-svn: 173776

llvm-svn: 173681

llvm-svn: 173676

llvm-svn: 173441

[asan] initialize kHighMemEnd at startup (instead of at compile time) to simplify further changes for various address space layouts. Fix asan_allocator2 for PowerPC (tested on 44-bit address space)

llvm-svn: 173260