[llvm-dev] Asan self host problems: Failed to deallocate

[Kostya Serebryany via llvm-dev]

Looks weird.

1. Is LLD involved here somehow? Peter has just fixed an
asan-unfriendliness in LLD: https://reviews.llvm.org/rL294977, although
this reports does not look related.
2. Could you provide the exact repro steps? (cmake, etc for both host and
bootstrap build)?

--kcc

On Fri, Feb 10, 2017 at 9:41 PM, David Blaikie <dblaikie at gmail.com> wrote:

> Trying to run a self host "ninja check-clang" with ASan enabled I hit a
> /lot/ of errors like this (strangely I hit none of these in check-llvm,
> only in check-clang):
>
> Any ideas?
>
> ==10525==ERROR: AddressSanitizer failed to deallocate 0x10800 (67584)
> bytes at address 0x631000014800
>
> ==10525==AddressSanitizer CHECK failed: /usr/local/google/home/
> blaikie/dev/llvm/src/projects/compiler-rt/lib/sanitizer_common/sanitizer_posix.cc:143
> "(("unable to unmap" && 0)) != (0)" (0x0, 0x0)
>
>     #0 0x51f42f in __asan::AsanCheckFailed(char const*, int, char const*,
> unsigned long long, unsigned long long) /usr/local/google/home/
> blaikie/dev/llvm/src/projects/compiler-rt/lib/asan/asan_rtl.cc:69:3
>
>     #1 0x532eff in __sanitizer::CheckFailed(char const*, int, char
> const*, unsigned long long, unsigned long long) /usr/local/google/home/
> blaikie/dev/llvm/src/projects/compiler-rt/lib/sanitizer_
> common/sanitizer_termination.cc:79:5
>
>     #2 0x52cf61 in __sanitizer::UnmapOrDie(void*, unsigned long)
> /usr/local/google/home/blaikie/dev/llvm/src/projects/
> compiler-rt/lib/sanitizer_common/sanitizer_posix.cc:143:5
>
>     #3 0x53877f in __sanitizer::UnsetAlternateSignalStack()
> /usr/local/google/home/blaikie/dev/llvm/src/projects/
> compiler-rt/lib/sanitizer_common/sanitizer_posix_libcdep.cc:186:3
>
>     #4 0x5209f5 in __asan::AsanThread::Destroy() /usr/local/google/home/
> blaikie/dev/llvm/src/projects/compiler-rt/lib/asan/asan_thread.cc:110:40
>
>     #5 0x7fd75802df81 in __nptl_deallocate_tsd
> /build/eglibc-oGUzwX/eglibc-2.19/nptl/pthread_create.c:158
>
>     #6 0x7fd75802e196 in start_thread /build/eglibc-oGUzwX/eglibc-2.
> 19/nptl/pthread_create.c:325
>
>     #7 0x7fd744ee337c in clone /build/eglibc-oGUzwX/eglibc-2.
> 19/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>
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