[mythtv-commits] Ticket #9590: SIGSEGV after starting second instance of mythtv

[MythTV]

#9590: SIGSEGV after starting second instance of mythtv
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 Reporter:  manuel.kampert@…               |          Owner:  dblain
     Type:  Bug Report                     |         Status:  new
 Priority:  minor                          |      Milestone:  unknown
Component:  MythTV - UPnP                  |        Version:  0.24-fixes
 Severity:  medium                         |     Resolution:
 Keywords:  SIGSEGV second instance        |  Ticket locked:  0
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Comment (by manuel.kampert@…):

 I don't know if this is at all supported but when I start a second
 instance of mythtv I always get a SIGSEGV from the frontend.

 I have tracked this down to a invalid call of m_mList.lock() in file
 threadpool.cpp

 Here ist the backtrace:
 gdb) backtrace
 #0  0xb372c179 in QMutex::lock() () from /usr/lib/qt4/libQtCore.so.4
 #1  0xb69e5af3 in ThreadPool::ThreadTerminating (this=0x8323ea0,
 pThread=0x831fe38) at threadpool.cpp:477
 #2  0xb69e3918 in WorkerThread::run (this=0x831fe38) at threadpool.cpp:271
 #3  0xb3732886 in ?? () from /usr/lib/qt4/libQtCore.so.4
 #4  0xb35bf97e in start_thread () from /lib/libpthread.so.0
 #5  0xb340969e in clone () from /lib/libc.so.6
 (gdb)

 To solve this issue I have disabled the call to g_pUpnp = new
 MediaRenderer() in main.cpp
 from file /mythtv/programs/mythfrontend

 What I have else tried:

 tried to start mythbackend with disable-upnp -> no success
 tried to start mythfrontedn with disable-autodiscover -> no success.

 Unfortunately I can not provide a complete patch here as I do not yet
 understand too much
 of the inner workings of mythtv.

 Best Regards,
   Manuel

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Ticket URL: <http://code.mythtv.org/trac/ticket/9590#comment:1>
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