[mythtv-commits] Ticket #13194: Interactive TV crash

MythTV noreply at mythtv.org
Thu Dec 14 23:21:47 UTC 2017


#13194: Interactive TV crash
----------------------------------+-----------------------------
 Reporter:  stuarta               |          Owner:
     Type:  Bug Report - General  |         Status:  new
 Priority:  minor                 |      Milestone:  30.0
Component:  MythTV - General      |        Version:  Master Head
 Severity:  medium                |     Resolution:
 Keywords:                        |  Ticket locked:  0
----------------------------------+-----------------------------

Comment (by stuarta):

 Same issue without the patches applied.

 Backtrace:
 {{{
 Thread 40 "MHEG" received signal SIGSEGV, Segmentation fault.
 [Switching to Thread 0x7ffe893c6700 (LWP 12163)]
 (gdb) bt
 #0  0x00007ffff28b96a8 in vtable for MHOctetString () at /usr/local/myth-
 git/lib/libmythfreemheg-30.so.30
 #1  0x00007ffff2668765 in MHEngine::TransitionToScene(MHObjectRef const&)
 (this=0x5547910, target=...) at Engine.cpp:498
 #2  0x00007ffff26753b9 in MHTransitionTo::Perform(MHEngine*)
 (this=0x7ffe744bb7a0, engine=0x5547910) at Groups.cpp:1045
 #3  0x00007ffff266932f in MHEngine::RunActions() (this=0x5547910) at
 Engine.cpp:645
 #4  0x00007ffff2667141 in MHEngine::RunAll() (this=0x5547910) at
 Engine.cpp:143
 #5  0x00007ffff499a5c8 in MHIContext::run() (this=0x5503050) at
 mhi.cpp:269
 #6  0x00007ffff3bc5e08 in MThread::run() (this=0x28340f0) at
 mthread.cpp:319
 #7  0x00007ffff3bc6743 in MThreadInternal::run() (this=0x54fdda0) at
 mthread.cpp:79
 #8  0x00007fffea0c4c72 in QThreadPrivate::start(void*) () at
 /lib64/libQt5Core.so.5
 #9  0x00007fffee48536d in start_thread () at /lib64/libpthread.so.0
 #10 0x00007fffe94a5e1f in clone () at /lib64/libc.so.6
 }}}

 This bit here is causing the problem
 {{{
 (gdb) up
 #1  0x00007ffff2668765 in MHEngine::TransitionToScene (this=0x5547910,
 target=...) at Engine.cpp:498
 498             if (!pEvent->pEventSource->IsShared())
 }}}
 When IsShared() is called it blows up as it is NULL as per the backtrace.

--
Ticket URL: <https://code.mythtv.org/trac/ticket/13194#comment:1>
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