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Posted to issues@trafficserver.apache.org by shinrich <gi...@git.apache.org> on 2017/02/26 03:59:31 UTC

[GitHub] trafficserver issue #1498: Problems with ASAN builds in 7.1

GitHub user shinrich opened an issue:

    https://github.com/apache/trafficserver/issues/1498

    Problems with ASAN builds in 7.1

    When running ASAN builds with the 7.1.x codebase I no longer see nice use-after-free reports (for the most part).  Instead I see repeats of the following pair of lines.
    
    {code}
    ==22259==ERROR: AddressSanitizer failed to deallocate 0x8000 (32768) bytes at address 0x7ffd87426000
    ==22259==AddressSanitizer CHECK failed: ../../../../libsanitizer/sanitizer_common/sanitizer_posix.cc:77 "(("unable to unmap" && 0)) != (0)" (0x0, 0x0)
    {code}
    
    Is anyone else seeing this?  Any ideas on how to fix?

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[GitHub] trafficserver issue #1498: Problems with ASAN builds in 7.1

Posted by shinrich <gi...@git.apache.org>.

Github user shinrich commented on the issue:

    https://github.com/apache/trafficserver/issues/1498
  
    The gcc in devtoolset-3 (gcc 4.9.2) and devtoolset-4 (gcc 5.3.1).


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[GitHub] trafficserver issue #1498: Problems with ASAN builds in 7.1

Posted by zwoop <gi...@git.apache.org>.

Github user zwoop commented on the issue:

    https://github.com/apache/trafficserver/issues/1498
  
    Is this with GCC? Which version?


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[GitHub] trafficserver issue #1498: Problems with ASAN builds in 7.1

Posted by shinrich <gi...@git.apache.org>.

Github user shinrich commented on the issue:

    https://github.com/apache/trafficserver/issues/1498
  
    Actually it looks like the issue is just tracking down the particular issue in #1476 / #1480.
    
    I enabled ASAN while merging in another issue, and it caught the double free in there just fine.  So I think we are good with the ASAN and I am just running into a flaw in ASAN.


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