[mythtv-commits] Ticket #2820: mythbacked segfault from MythSocket::writeStringList

[MythTV]

#2820: mythbacked segfault from MythSocket::writeStringList
--------------------------------------+-------------------------------------
 Reporter:  mikerice1969 at hotmail.com  |       Owner:  ijr    
     Type:  defect                    |      Status:  new    
 Priority:  minor                     |   Milestone:  unknown
Component:  mythtv                    |     Version:  0.20   
 Severity:  high                      |  
--------------------------------------+-------------------------------------
 Backend is crashing on average once a day.  This time I started running
 (0.20-fixes/2.6.18-1.2239.fc5smp/ivtv0.8.2) at about 8:30am and it
 segfaulted at about 4:30pm.  See offending stack trace below.  Full trace
 is attached.  Also attached the last 30 minutes of the backend log.


 {{{
 Thread 19 (Thread -1370518624 (LWP 20382)):
 #0  0x012341ba in memcpy () from /lib/libc.so.6
 No symbol table info available.
 #1  0x02c1943d in QString::operator+= () from /usr/lib/qt-3.3/lib/libqt-
 mt.so.3
 No symbol table info available.
 #2  0x02c2c2d6 in QStringList::join () from /usr/lib/qt-3.3/lib/libqt-
 mt.so.3
 No symbol table info available.
 #3  0x074b22c2 in MythSocket::writeStringList (this=0xad5d3f30,
 list=@0xae4f7c5c) at mythsocket.cpp:251
         str = {static null = {static null = <same as static member of an
 already seen type>, d = 0x82c43f8, static shared_null = 0x82c43f8}, d =
 0xaa007020, static shared_null = 0x82c43f8}
         utf8 = <incomplete type>
         size = 19055219
         written = -1296271864
         payload = <incomplete type>
         errorcount = 2907710096
 #4  0x08094d27 in MainServer::SendResponse (this=0x8346170,
 socket=0xad5d3f30, commands=@0xae4f7c5c) at mainserver.cpp:990
 No locals.
 #5  0x080adc33 in MainServer::HandleQueryRecordings (this=0x8346170,
 type=@0xae4f8260, pbs=0xad697798) at mainserver.cpp:1291
         pbssock = (MythSocket *) 0xad5d3f30
         islocal = false
         playbackhost = {static null = {static null = <same as static
 member of an already seen type>, d = 0x82c43f8, static shared_null =
 0x82c43f8}, d = 0xad3be998, static shared_null = 0x82c43f8}
         fs_db_name = {static null = {static null = <same as static member
 of an already seen type>, d = 0x82c43f8, static shared_null = 0x82c43f8},
 d = 0xad669c28, static shared_null = 0x82c43f8}
         rectime = {d = {jd = 2454090}, t = {ds = 59333145}}
         ri = {_M_node = 0xae4f7c94}
         schedList =
 {<std::_List_base<ProgramInfo*,std::allocator<ProgramInfo*> >> = {_M_impl
 = {<std::allocator<std::_List_node<ProgramInfo*> >> =
 {<__gnu_cxx::new_allocator<std::_List_node<ProgramInfo*> >> = {<No data
 fields>}, <No data fields>}, _M_node = {_M_next = 0xb2ba53a8, _M_prev =
 0xad9254d8}}}, <No data fields>}
         ip = {static null = {static null = <same as static member of an
 already seen type>, d = 0x82c43f8, static shared_null = 0x82c43f8}, d =
 0x8304750, static shared_null = 0x82c43f8}
         port = {static null = {static null = <same as static member of an
 already seen type>, d = 0x82c43f8, static shared_null = 0x82c43f8}, d =
 0x8303b40, static shared_null = 0x82c43f8}
         inUseMap = {sh = 0xad32bae8}
         inUseKey = {static null = {static null = <same as static member of
 an already seen type>, d = 0x82c43f8, static shared_null = 0x82c43f8}, d =
 0xad805108, static shared_null = 0x82c43f8}
         inUseForWhat = {static null = {static null = <same as static
 member of an already seen type>, d = 0x82c43f8, static shared_null =
 0x82c43f8}, d = 0xad3408d8, static shared_null = 0x82c43f8}
         oneHourAgo = {d = {jd = 2454090}, t = {ds = 55737832}}
         query = {<> = {<No data fields>}, m_db = 0x89855c8, m_isConnected
 = true, m_returnConnection = true}
         thequery = {static null = {static null = <same as static member of
 an already seen type>, d = 0x82c43f8, static shared_null = 0x82c43f8}, d =
 0xad340b50, static shared_null = 0x82c43f8}
         chanorder = {static null = {static null = <same as static member
 of an already seen type>, d = 0x82c43f8, static shared_null = 0x82c43f8},
 d = 0x831c4d0, static shared_null = 0x82c43f8}
         outputlist = {<QValueList<QString>> = {sh = 0xad32bcc0}, <No data
 fields>}
         fileprefix = {static null = {static null = <same as static member
 of an already seen type>, d = 0x82c43f8, static shared_null = 0x82c43f8},
 d = 0x831c718, static shared_null = 0x82c43f8}
         backendIpMap = {sh = 0xad32beb8}
         backendPortMap = {sh = 0xad32bec8}
 #6  0x080b2b35 in MainServer::ProcessRequestWork (this=0x8346170,
 sock=0xad5d3f30) at mainserver.cpp:357
         listline = {<QValueList<QString>> = {sh = 0xad47a918}, <No data
 fields>}
         line = {static null = {static null = <same as static member of an
 already seen type>, d = 0x82c43f8, static shared_null = 0x82c43f8}, d =
 0xad5d3398, static shared_null = 0x82c43f8}
         tokens = {<QValueList<QString>> = {sh = 0xb2b8e858}, <No data
 fields>}
         command = {static null = {static null = <same as static member of
 an already seen type>, d = 0x82c43f8, static shared_null = 0x82c43f8}, d =
 0xad5fbce0, static shared_null = 0x82c43f8}
         pbs = (class PlaybackSock *) 0xad697798
 #7  0x080b6714 in MainServer::ProcessRequest (this=0x8346170,
 sock=0xad5d3f30) at mainserver.cpp:301
 No locals.
 #8  0x080bf4b9 in ProcessRequestThread::run (this=0xb2b02208) at
 mainserver.cpp:136
 No locals.
 #9  0x02888ccc in QThreadInstance::start () from /usr/lib/qt-3.3/lib
 /libqt-mt.so.3
 No symbol table info available.
 #10 0x010c1433 in start_thread () from /lib/libpthread.so.0
 No symbol table info available.
 #11 0x01291a1e in clone () from /lib/libc.so.6
 }}}

-- 
Ticket URL: <http://svn.mythtv.org/trac/ticket/2820>
MythTV <http://www.mythtv.org/>
MythTV