<div dir="ltr"><div>this failure may also be related:<br><a href="http://lab.llvm.org:8011/builders/sanitizer-ppc64be-linux/builds/3510/steps/run%20msan%20unit%20tests/logs/stdio">http://lab.llvm.org:8011/builders/sanitizer-ppc64be-linux/builds/3510/steps/run%20msan%20unit%20tests/logs/stdio</a></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Aug 24, 2016 at 7:37 PM, Kostya Serebryany <span dir="ltr"><<a href="mailto:kcc@google.com" target="_blank">kcc@google.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><br></div>I afraid I may need some help now...<div><a href="http://lab.llvm.org:8011/builders/clang-ppc64be-linux-lnt/builds/7075/steps/ninja%20check%201/logs/FAIL%3A%20AddressSanitizer-Unit%3A%3AAddressSanitizerInterface.ManyThreadsWithStatsStressTest" target="_blank">http://lab.llvm.org:8011/<wbr>builders/clang-ppc64be-linux-<wbr>lnt/builds/7075/steps/ninja%<wbr>20check%201/logs/FAIL%3A%<wbr>20AddressSanitizer-Unit%3A%<wbr>3AAddressSanitizerInterface.<wbr>ManyThreadsWithStatsStressTest</a><br></div><div><pre style="font-family:"courier new",courier,monotype,monospace;color:rgb(0,0,0);font-size:medium"><span class="m_-7456147369121955005gmail-stdout">[ RUN ] AddressSanitizerInterface.<wbr>ManyThreadsWithStatsStressTest
==18839==AddressSanitizer CHECK failed: /home/buildbots/ppc64be-clang-<wbr>lnt-test/clang-ppc64be-lnt/<wbr>llvm/projects/compiler-rt/lib/<wbr>asan/asan_allocator.cc:484 "((m->free_tid)) == ((kInvalidTid))" (0x65, 0xffffff)
#0 0x10102680 (/home/buildbots/ppc64be-<wbr>clang-lnt-test/clang-ppc64be-<wbr>lnt/stage1/projects/compiler-<wbr>rt/lib/asan/tests/default/<wbr>Asan-powerpc64-inline-Test+<wbr>0x10102680)
#1 0x10123754 (/home/buildbots/ppc64be-<wbr>clang-lnt-test/clang-ppc64be-<wbr>lnt/stage1/projects/compiler-<wbr>rt/lib/asan/tests/default/<wbr>Asan-powerpc64-inline-Test+<wbr>0x10123754)
</span></pre></div><div><span class="m_-7456147369121955005gmail-stdout"><br></span></div><div><br></div><div>This is most likely due to <span style="font-size:12.8px">r279664, so please verify that by reverting it locally. </span></div><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">next, do you know why the stack traces on the bot are not symbolized? </span></div><div>is that because llvm-symbolizer is not supported on PPC? </div><div>I need the symbolized stack traces to get some clue... </div><div><br></div><div>finally, will you be able to make the test smaller to narrow down the cause of the failure? </div><div><br></div><div>If this is the only failure due to <span style="font-size:12.8px">r279664 I'd rather disable this test on PPC than revert </span><span style="font-size:12.8px">r279664. </span></div><div><span style="font-size:12.8px">WDYT? </span></div><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">--kcc </span></div><div><br></div><div><br></div><div><br></div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Aug 24, 2016 at 2:35 PM, Bill Seurer <span dir="ltr"><<a href="mailto:seurer@linux.vnet.ibm.com" target="_blank">seurer@linux.vnet.ibm.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span>On 08/24/16 13:22, Kostya Serebryany wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Did reverting help?<br>
If yes, I will need someone's help to debug this on PPC -- I really need<br>
this change back.<br>
</blockquote>
<br></span>
Reverting it did help. In the future if you (or anyone else) needs help with debugging a problem on power I can usually help. Just let me know what you need done.<span class="m_-7456147369121955005HOEnZb"><font color="#888888"><br>
-- <br>
<br>
-Bill Seurer<br>
<br>
</font></span></blockquote></div><br></div>
</div></div></blockquote></div><br></div>