[jira] [Created] (TS-1653) Crash report: HostDBContinuation::probeEvent MutexTryLock

["Zhao Yongming (JIRA)" <ji...@apache.org>]

Zhao Yongming created TS-1653:
---------------------------------

             Summary: Crash report: HostDBContinuation::probeEvent MutexTryLock
                 Key: TS-1653
                 URL: https://issues.apache.org/jira/browse/TS-1653
             Project: Traffic Server
          Issue Type: Bug
          Components: Core
            Reporter: Zhao Yongming


{code}
Core was generated by `/usr/bin/traffic_server -M --httpport 8080:fd=7'.
Program terminated with signal 11, Segmentation fault.
#0  Mutex_trylock (this=0x2b994a800ce0, am=0x0, t=0x2b9948fea010) at ../iocore/eventsystem/I_Lock.h:170
170	  if (m->thread_holding != t) {
Missing separate debuginfos, use: debuginfo-install expat-2.0.1-11.el6_2.x86_64 glibc-2.12-1.47.el6_2.9.x86_64 keyutils-libs-1.4-3.el6.x86_64 krb5-libs-1.9-22.el6_2.1.x86_64 libcom_err-1.41.12-11.el6.x86_64 libgcc-4.4.6-3.el6.x86_64 libselinux-2.0.94-5.2.el6.x86_64 libstdc++-4.4.6-3.el6.x86_64 openssl-1.0.0-20.el6_2.4.x86_64 pcre-7.8-3.1.el6.x86_64 tcl-8.5.7-6.el6.x86_64 xz-libs-4.999.9-0.3.beta.20091007git.el6.x86_64 zlib-1.2.3-27.el6.x86_64
(gdb) bt
#0  Mutex_trylock (this=0x2b994a800ce0, am=0x0, t=0x2b9948fea010) at ../iocore/eventsystem/I_Lock.h:170
#1  MutexTryLock::MutexTryLock (this=0x2b994a800ce0, am=0x0, t=0x2b9948fea010) at ../iocore/eventsystem/I_Lock.h:385
#2  0x00000000005b38dc in HostDBContinuation::probeEvent (this=0x2b997329df10, event=<value optimized out>, e=0x2b99b8050030) at HostDB.cc:1762
#3  0x000000000065a1b4 in handleEvent (this=0x2b9948fea010, e=0x2b99b8050030, calling_code=2) at I_Continuation.h:146
#4  EThread::process_event (this=0x2b9948fea010, e=0x2b99b8050030, calling_code=2) at UnixEThread.cc:142
#5  0x000000000065ad83 in EThread::execute (this=0x2b9948fea010) at UnixEThread.cc:221
#6  0x00000000006594d2 in spawn_thread_internal (a=0x2fb8350) at Thread.cc:88
#7  0x0000003e878077f1 in start_thread () from /lib64/libpthread.so.0
#8  0x0000003e86ce5ccd in clone () from /lib64/libc.so.6
(gdb) f 2
#2  0x00000000005b38dc in HostDBContinuation::probeEvent (this=0x2b997329df10, event=<value optimized out>, e=0x2b99b8050030) at HostDB.cc:1762
1762	  MUTEX_TRY_LOCK_FOR(lock, action.mutex, t, action.continuation);
(gdb) p action.mutex
$1 = {m_ptr = 0x0}
(gdb) p t
$2 = <value optimized out>
(gdb) p action
$3 = {_vptr.Action = 0x6601d0, continuation = 0x0, mutex = {m_ptr = 0x0}, cancelled = 1}
(gdb) 
{code}

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