[jira] [Created] (TS-4728) Null pointer error in LogHost.cc.

["Peter Chou (JIRA)" <ji...@apache.org>]

Peter Chou created TS-4728:
------------------------------

             Summary: Null pointer error in LogHost.cc.
                 Key: TS-4728
                 URL: https://issues.apache.org/jira/browse/TS-4728
             Project: Traffic Server
          Issue Type: Bug
          Components: Logging
            Reporter: Peter Chou


[~jpeach@apache.org] I am getting a null pointer access error with the following assertion at the time of traffic_server start-up with log collation enabled (client-side). I was able to get around it by just commenting it out, but perhaps a better fix is required.
{noformat}
LogHost::create_orphan_LogFile_object()
{
  // We expect that no-one else is holding any refcounts on the
  // orphan file so that is will be releases when we replace it
  // below.
  ink_assert(m_orphan_file->refcount() == 1);
{noformat}

Back-trace --
{noformat}
#0  0x000000000053e772 in RefCountObj::refcount (this=0x8) at ../lib/ts/Ptr.h:80
#1  0x0000000000692f9f in LogHost::create_orphan_LogFile_object (this=0x2268d80) at LogHost.cc:235
#2  0x0000000000692a45 in LogHost::set_ipstr_port (this=0x2268d80, ipstr=0x2265d40 "127.0.0.1", pt=8085) at LogHost.cc:135
#3  0x0000000000692b92 in LogHost::set_name_or_ipstr (this=0x2268d80, name_or_ip=0x2265d40 "127.0.0.1") at LogHost.cc:155
#4  0x0000000000684046 in LogConfig::read_xml_log_config (this=0x21e4110) at LogConfig.cc:1472
#5  0x000000000067ff73 in LogConfig::setup_log_objects (this=0x21e4110) at LogConfig.cc:510
#6  0x000000000067f858 in LogConfig::init (this=0x21e4110, prev_config=0x0) at LogConfig.cc:395
#7  0x00000000006721fe in Log::init (flags=0) at Log.cc:925
#8  0x0000000000542552 in main (argv=0x7ffcc853abd8) at Main.cc:1828
{noformat}

I made minimal changes to logs_xml.config to set as client --
{noformat}
<LogFormat>
    <Name = "minimal"/>
    <Format = "%<chi> : %<cqu> : %<pssc>"/>
</LogFormat>

<LogObject>
    <Format = "minimal"/>
    <Filename = "minimal_remote"/>
    <CollationHosts = "127.0.0.1:8085"/>
</LogObject>
{noformat}



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