[mythtv-commits] Ticket #7438: Backend crashing in DB query

[MythTV]

#7438: Backend crashing in DB query
---------------------------+------------------------------------------------
 Reporter:  nigel          |       Owner:  dblain 
     Type:  defect         |      Status:  new    
 Priority:  minor          |   Milestone:  unknown
Component:  MythTV - UPnP  |     Version:  unknown
 Severity:  medium         |     Mlocked:  0      
---------------------------+------------------------------------------------
 No real trace yet, but this doesn't seem to be lying:
 {{{
 (gdb) run -v most
 Starting program: /usr/bin/mythbackend -v most
 Failed to read a valid object file image from memory.
 [Thread debugging using libthread_db enabled]
 [New Thread -1284311312 (LWP 1207)]
 2009-10-27 12:14:24.189 mythbackend version: trunk [22600M] www.mythtv.org
 ...
 2009-10-27 12:14:34.694 JobQueue: GetJobsInQueue: Ignore 'Flag
 Commercials' Job for chanid 1039 @ 20091026192800 in Finished state.

 Program received signal SIGSEGV, Segmentation fault.
 [Switching to Thread -1345324144 (LWP 1217)]
 0xb5dd905c in QSqlDatabase::isValid (this=0x81b054c)
     at kernel/qsqldatabase.cpp:1384
 1384        return d->driver && d->driver != d->shared_null()->driver;
 (gdb) where
 #0  0xb5dd905c in QSqlDatabase::isValid (this=0x81b054c)
     at kernel/qsqldatabase.cpp:1384
 #1  0xb618436a in MSqlDatabase::isOpen (this=0x81b0548) at
 mythdbcon.cpp:50
 #2  0xb61844b3 in MSqlQuery (this=0xafcff214, qi=@0xafcff224)
     at mythdbcon.cpp:337
 #3  0x0816e0c7 in UPnpMedia::BuildMediaMap (this=0xb0d029b0)
     at upnpmedia.cpp:223
 #4  0x0816ffe3 in UPnpMedia::RunRebuildLoop (this=0xb0d029b0)
     at upnpmedia.cpp:57
 #5  0x08170023 in UPnpMedia::doUPnpMediaThread (param=0xb0d029b0)
     at upnpmedia.cpp:66
 #6  0xb4ced183 in start_thread () from /lib/libpthread.so.0
 #7  0xb4b59a7e in clone () from /lib/libc.so.6
 }}}
 because running with noupnp prevents crash.
 [[BR]]
 Could be hairy bug in shared DB code, but I'm investigating the DB first,
 because of:
 {{{
 2009-10-27 00:20:02.644 mythbackend version: trunk [22555M] www.mythtv.org
 ...
 2009-10-27 00:33:06.122 UPnpMedia: BuildMediaMap VIDEO scan starting in
 :/myth/video:
 2009-10-27 00:33:06.125 DB Error (UPnpMedia::buildFileList):
 Query was:
 INSERT INTO upnpmedia (intid, class, itemtype, parentid, itemproperties,
 filepath, filename, title, coverart) VALUES (?, ?, 'FOLDER', ?, '', ?, ?,
 ?, ?)
 Bindings were:
 :COVERART=, :FILENAME=KOIR, :FILEPATH=/myth/video/KOIR, :ITEMCLASS=VIDEO,
 :ITEMID=100001, :PARENTID=100000, :TITLE=KOIR
 Driver error was [2/1062]:
 QMYSQL3: Unable to execute statement
 Database error was:
 Duplicate entry '100001' for key 1

 2009-10-27 00:33:06.127 DB Error (UPnpMedia::buildFileList):
 Query was:
 INSERT INTO upnpmedia (intid, class, itemtype, parentid, itemproperties,
 filepath, filename, title, coverart) VALUES (?, ?, 'FOLDER', ?, '', ?, ?,
 ?, ?)
 Bindings were:
 :COVERART=, :FILENAME=AUDIO_TS, :FILEPATH=/myth/video/KOIR/AUDIO_TS,
 :ITEMCLASS=VIDEO, :ITEMID=100002, :PARENTID=100001, :TITLE=AUDIO_TS
 Driver error was [2/1062]:
 QMYSQL3: Unable to execute statement
 Database error was:
 Duplicate entry '100002' for key 1
 }}}
 ''et c.''

-- 
Ticket URL: <http://svn.mythtv.org/trac/ticket/7438>
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