Re: [a-users] Re: ITP: fmit -- free music instrument tuner

[Junichi Uekawa <dancer@netfort.gr.jp>]

Hi,

I'm trying to debug why 'fmit' is so unstable on my unstable amd64
box.  Backtrace is looking suspiciously too qt to be application
specific.  Anyone seen this kind of backtrace recently? At first sight
it looks like some allocator bug.


[21:53:00]dancer64:trunk> gdb /usr/bin/fmit
GNU gdb 6.4-debian
Copyright 2005 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu"...Using host libthread_db library "/lib/libthread_db.so.1".

(gdb) run
Starting program: /usr/bin/fmit
[Thread debugging using libthread_db enabled]
[New Thread 47596280818048 (LWP 16294)]
Free Music Instrument Tuner version 0.96.4 built at Jan 27 2006 21:51:28
Install directory '/usr'
Qt: gdb: -nograb added to command-line options.
         Use the -dograb option to enforce grabbing.
CaptureThread: INFO: Built in transports
CaptureThread: INFO:    JACK   unavailable
CaptureThread: INFO:    ALSA   available
CaptureThread: INFO: Auto detecting a working transport ... using ALSA
CaptureThread: INFO: ALSA: try to set format to Signed 16 bit Little Endian success
CaptureThread: WARNING: ALSA: cannot set channel count to one. channels will be mixed
CaptureThread: INFO: ALSA: try to set sampling rate to 96000 failed
CaptureThread: INFO: ALSA: try to set sampling rate to 48000 success
[New Thread 1082132832 (LWP 16297)]
CaptureThread: WARNING: ALSA: cannot set channel count to one. channels will be mixed
*** glibc detected *** free(): invalid next size (normal): 0x00000000008c66b0 ***

Program received signal SIGABRT, Aborted.
[Switching to Thread 47596280818048 (LWP 16294)]
0x00002b49de5fcdf0 in raise () from /lib/libc.so.6
(gdb) bt
#0  0x00002b49de5fcdf0 in raise () from /lib/libc.so.6
#1  0x00002b49de5fe2a0 in abort () from /lib/libc.so.6
#2  0x00002b49de6329ae in __libc_message () from /lib/libc.so.6
#3  0x00002b49de63870b in _int_free () from /lib/libc.so.6
#4  0x00002b49de6389ee in free () from /lib/libc.so.6
#5  0x00002b49de629823 in fclose@@GLIBC_2.2.5 () from /lib/libc.so.6
#6  0x00002b49de6a9743 in __nss_database_lookup () from /lib/libc.so.6
#7  0x00002b49de6aaa37 in __nss_passwd_lookup () from /lib/libc.so.6
#8  0x00002b49de65f4cc in getpwuid_r@@GLIBC_2.2.5 () from /lib/libc.so.6
#9  0x00002b49de65ed3f in getpwuid () from /lib/libc.so.6
#10 0x00002b49dd9814b9 in QSessionManager::setRestartCommand () from /usr/lib/libqt-mt.so.3
#11 0x00002b49dd981990 in QSessionManager::setRestartCommand () from /usr/lib/libqt-mt.so.3
#12 0x00002b49dc8ba43a in _SmcProcessMessage () from /usr/X11R6/lib/libSM.so.6
#13 0x00002b49dc9c784d in IceProcessMessages () from /usr/X11R6/lib/libICE.so.6
#14 0x00002b49dd97bb9f in QSmSocketReceiver::socketActivated () from /usr/lib/libqt-mt.so.3
#15 0x00002b49dd97bddc in QSmSocketReceiver::qt_invoke () from /usr/lib/libqt-mt.so.3
#16 0x00002b49dda613a2 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#17 0x00002b49dda61d8b in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#18 0x00002b49dddca052 in QSocketNotifier::activated () from /usr/lib/libqt-mt.so.3
#19 0x00002b49dda805aa in QSocketNotifier::event () from /usr/lib/libqt-mt.so.3
#20 0x00002b49dd9fb000 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#21 0x00002b49dd9fb264 in QApplication::notify () from /usr/lib/libqt-mt.so.3
#22 0x00002b49dd98bc6a in QApplication::sendEvent () from /usr/lib/libqt-mt.so.3
#23 0x00002b49dd9ed711 in QEventLoop::activateSocketNotifiers () from /usr/lib/libqt-mt.so.3
#24 0x00002b49dd99f45f in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#25 0x00002b49dda12cde in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#26 0x00002b49dda12be7 in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#27 0x00002b49dd9f9de6 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#28 0x0000000000421435 in main ()


regards,
	junichi
-- 
dancer@{debian.org,netfort.gr.jp}   Debian Project