llvm-svn: 177072

llvm-svn: 177071

llvm-svn: 177070

[asan] remove one redundant malloc stress test, unify the usage of ASAN_LOW_MEMORY macro in tests, slightly reduce test memory usage (all to make 32-bit runs consume less RAM)

llvm-svn: 177069

Patch by Sergey Matveev (earthdok@google.com)

llvm-svn: 177068

llvm-svn: 177067

llvm-svn: 177065

llvm-svn: 177064

Also, extended the test to check that ThreadLister::Reset() works as intended.

Patch by Sergey Matveev (earthdok@google.com)

llvm-svn: 177060

llvm-svn: 177059

[ASan] turn off checking initialization order in ASan runtime by default. Instead, it should be turned on by default in the compiler

llvm-svn: 177058

Does not change default behavior.

llvm-svn: 177057

llvm-svn: 177056

llvm-svn: 177054

llvm-svn: 177052

llvm-svn: 177051

llvm-svn: 177036

llvm-svn: 177013

llvm-svn: 177012

Otherwise debug DynamoRIO complains at us for leaking memory.

llvm-svn: 176947

llvm-svn: 176943

llvm-svn: 176940

Adjust stack size in pthread_attr_t when the app-requested size does not fit MSan TLS.

llvm-svn: 176939

llvm-svn: 176938

llvm-svn: 176937

llvm-svn: 176935

llvm-svn: 176932

[Sanitizer] Change MemoryMappingLayout methods to also report memory protection flags (for future use in leak checker). Patch by Sergey Matveev.

llvm-svn: 176931

[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

[sanitizer] use fewer size classes in the allocator to reduce the memory footprint. There is no all-size-fits-all constant here, but this change is positive or neutral on several large apps I've tested

llvm-svn: 176855

llvm-svn: 176854

[sanitizer] simplify the allocator's SizeClassMap: do not require an extra template parameter, instead compute it in flight. No functionality change

llvm-svn: 176853

Summary:
The loader does not call mmap() through the PLT because it has to
bootstrap the process before libc is present.  Hooking dlopen() isn't
enough either because the loader runs module initializers before
returning, and they could run arbitrary msan instrumented code.

If msandr is present, then we can intercept the mmaps from dlopen at the
syscall layer and clear the shadow there.  If msandr is missing, we
clear the shadow after dlopen() and hope any initializers are trivial.

Reviewers: eugenis

CC: kcc, llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D509

llvm-svn: 176818

llvm-svn: 176805

[ASan] Reduce the local buffer size in Report() not to fail the check enforced when building TSan runtime.

llvm-svn: 176804

[ASan] Try to use a small (512 bytes) stack-local buffer in Report() for short messages, fall back to MmapOrDie() in the case of a failure.
This shall eliminate most of the cryptic "ERROR: failed to mmap" messages caused by recursively calling MmapOrDie() from MmapOrDie().

llvm-svn: 176802

llvm-svn: 176800

llvm-svn: 176799

it. Fortunately, versions of gcov that predate the extra checksum also ignore 
any extra data, so this isn't a problem. This matches the API change made in
r176745.

llvm-svn: 176746

llvm-svn: 176618