[llvm-dev] Some ASan and TSan tests go into an infinite loop on Debian/sid x86_64

[Adhemerval Zanella via llvm-dev]

On 28-01-2016 05:20, Dmitri Gribenko via llvm-dev wrote:
> Hi,
> 
> I was just building the top-of-trunk of LLVM/Clang/compiler-rt on
> Debian/sid x86_64 (with gcc (Debian 5.3.1-7) 5.3.1 20160121) and for
> me Asan-x86_64-inline-Test/AddressSanitizer.ManyThreadsTest does not
> finish running:
> 
> Note: Google Test filter = AddressSanitizer.ManyThreadsTest
> [==========] Running 1 test from 1 test case.
> [----------] Global test environment set-up.
> [----------] 1 test from AddressSanitizer
> [ RUN      ] AddressSanitizer.ManyThreadsTest
> <just keeps going for minutes>
> 
> Same for 'ThreadSanitizer :: mmap_stress.cc', but it doesn't produce any output.
> 
> The tests seem to be multithreaded, so I want to mention that this is
> an 18-core VM.  Maybe the tests are not scaling well?
> 
> Is this a known issue?
> 
> Dmitri
> 

We noted on AArch64 buildbot constantly [1] so we disabled it on aarch64 for
further investigation (I haven't check it yet). Failing on x86_64 makes me
believe this is not an architecture specific issue.

[1] https://llvm.org/bugs/show_bug.cgi?id=24389