[mythtv-users] frontend crash after cycling though channels

David Lasker dave at altosdesign.com
Tue Sep 28 23:42:59 UTC 2010


I am running a combined BE/FE with Mythbuntu 0.23+fixes 24158.

I changed the splitter on my cable, so I wanted to make sure that I could
still receive all my channels.

I cycled through all the channels on my digital tuner card by hitting up
arrow followed by enter.

Then I attempted to switch to my analog card (connected to IR-controlled
cable box) by bringing up the EPG, selecting an analog channel, and hitting
enter.

At that point the FE crashed.

The FE log has the following:

2010-09-28 15:35:23.256 XMLParseBase: Loading window theme from
/usr/share/mythtv/themes/Mythbuntu/schedule-ui.xml
QMutex::lock: mutex lock failure: 
*** glibc detected *** /usr/bin/mythfrontend.real: malloc(): memory
corruption: 0xa12650a1 ***
======= Backtrace: =========
/lib/tls/i686/cmov/libc.so.6(+0x6b591)[0x735c591]
/lib/tls/i686/cmov/libc.so.6(+0x6e395)[0x735f395]
/lib/tls/i686/cmov/libc.so.6(+0x6edaa)[0x735fdaa]
/lib/tls/i686/cmov/libc.so.6(__libc_memalign+0xa6)[0x7361486]
/lib/tls/i686/cmov/libc.so.6(posix_memalign+0x49)[0x7361699]
/usr/lib/libmythavutil-0.23.so.0(av_malloc+0x31)[0x1ccfb1]
/lib/tls/i686/cmov/libc.so.6(clone+0x5e)[0x73bea4e]

There is also a very long memory map in the log, which I will be happy to
post if anyone thinks it will be useful.

I don't see anything in the backend log corresponding to the crash.

Unfortunately I am unable to reproduce the problem.

Does this ring a bell with anyone?

Is it worth submitting a non-reproducable bug report?

Thanks...

Dave



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