[mythtv-commits] Ticket #4993: Mythbackend crashes frequently

[MythTV]

#4993: Mythbackend crashes frequently
-----------------------+----------------------------------------------------
 Reporter:  anonymous  |       Owner:  ijr    
     Type:  defect     |      Status:  new    
 Priority:  minor      |   Milestone:  unknown
Component:  mythtv     |     Version:  head   
 Severity:  high       |     Mlocked:  0      
-----------------------+----------------------------------------------------
 Running svn revision: 16554. Though this has happened for a while now.

 I have a DVB-C set-up (Technotrend card) and currently mythbackend just
 crashes every few hours. EPG data is updated via EIT.

 The logs show following errors just before the crash:
 --------
 2008-03-18 10:16:08.893 DB Error (Looking up chanID):
 Query was:

 No error type from QSqlError?  Strange...
 2008-03-18 10:16:08.907 DB Error (Looking up chanID):
 Query was:

 No error type from QSqlError?  Strange...
 QSqlQuery::exec: empty query
 2008-03-18 10:16:08.910 DB Error (Looking up chanID):
 Query was:
 --------

 This is repeated ~hundred times before mythbackend finally crashes with
 following backtrace:
 ----
 *** glibc detected *** /usr/local/bin/mythbackend: double free or
 corruption (fasttop): 0x082d5618 ***
 ======= Backtrace: =========
 /lib/tls/i686/cmov/libc.so.6[0xb597dd65]
 /lib/tls/i686/cmov/libc.so.6(cfree+0x90)[0xb5981800]
 /usr/lib/libstdc++.so.6(_ZdlPv+0x21)[0xb5b46d81]
 /usr/lib/libstdc++.so.6(_ZdaPv+0x1d)[0xb5b46ddd]
 /usr/lib/libqt-mt.so.3(_ZN11QStringDataD1Ev+0x34)[0xb642ed30]
 /usr/lib/libqt-mt.so.3(_ZN11QStringData10deleteSelfEv+0x23)[0xb64264b5]
 /usr/local/lib/libmyth-0.21.so.0(_ZN12MSqlDatabase12KickDatabaseEv+0x55)[0xb6ae4c67]
 /usr/local/lib/libmyth-0.21.so.0(_ZN9MSqlQuery7InitConEv+0x56)[0xb6ae96b2]
 ----

 This defect looks similar to the one in ticket #4695.

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Ticket URL: <http://svn.mythtv.org/trac/ticket/4993>
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