[mythtv] Backtrace of segfault when starting a recording in live-tv
Oscar Carlsson
oscar.carlsson at home.se
Mon Jan 26 07:37:54 EST 2004
Hello Development,
Using latest CVS as of this email.
LiveTV, press R to start a recording, and I got this segfault on the frontend.
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This GDB was configured as "i686-pc-linux-gnu"...
(gdb) run
Starting program: /usr/local/bin/mythfrontend
2004-01-26 13:31:53 mythfrontend version: 0.14.20040123-1 www.mythtv.org
2004-01-26 13:31:53 Enabled verbose msgs : important general
2004-01-26 13:31:53 Registering Internal as a media playback plugin.
2004-01-26 13:31:57 Registering MythMusic Media Handler as a media handler
2004-01-26 13:32:04 Connecting to backend server: 127.0.0.1:6543 (try 1 of 5)
2004-01-26 13:32:09 Opening OSS audio device '/dev/dsp'.
2004-01-26 13:32:09 Using XV port 111
2004-01-26 13:32:09 Changing from None to WatchingLiveTV
[New Thread 16384 (LWP 10815)]
[New Thread 32769 (LWP 10819)]
[New Thread 16386 (LWP 10820)]
[New Thread 32771 (LWP 10823)]
[New Thread 49156 (LWP 10824)]
[New Thread 65541 (LWP 10825)]
[New Thread 81926 (LWP 10826)]
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 16386 (LWP 10820)]
0x401cc9ed in ProgramInfo::GetProgramRecordingStatus(QSqlDatabase*) (this=0x0,
db=0x81f9038) at programinfo.cpp:603
603 if (record == NULL)
(gdb) thread apply all bt full
Thread 7 (Thread 81926 (LWP 10826)):
#0 0x41267677 in poll () from /lib/libc.so.6
No symbol table info available.
#1 0x402dd94c in vsync_wait_for_retrace () at vsync.c:223
polldata = {fd = 23, events = 255, revents = 0}
#2 0x40198f4d in NuppelVideoPlayer::ExAVSync() (this=0x822af50)
at NuppelVideoPlayer.cpp:1274
buffer = (VideoFrame *) 0x8554ea0
#3 0x4019a1cd in NuppelVideoPlayer::OutputVideoLoop() (this=0x822af50)
at NuppelVideoPlayer.cpp:1594
frame = (VideoFrame *) 0x8554ea0
#4 0x4019a49a in NuppelVideoPlayer::kickoffOutputVideoLoop(void*) (
player=0x822af50) at NuppelVideoPlayer.cpp:1666
nvp = (NuppelVideoPlayer *) 0x822af50
#5 0x4106dd40 in pthread_start_thread () from /lib/libpthread.so.0
No symbol table info available.
#6 0x4106de42 in pthread_start_thread_event () from /lib/libpthread.so.0
No symbol table info available.
Thread 6 (Thread 65541 (LWP 10825)):
#0 0x412418f6 in nanosleep () from /lib/libc.so.6
No symbol table info available.
#1 0x00000000 in ?? ()
No symbol table info available.
Thread 5 (Thread 49156 (LWP 10824)):
#0 0x41268f61 in select () from /lib/libc.so.6
No symbol table info available.
#1 0x4105acb4 in __JCR_LIST__ () from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#2 0x406c307d in RemoteFile::Read(void*, int) (this=0x84655d8,
data=0x44070808, size=256000) at remotefile.cpp:234
recv = 0
sent = 256000
zerocnt = 3
error = false
response = false
strlist = {<QValueList<QString>> = {sh = 0x821df10}, <No data fields>}
#3 0x402074ab in RingBuffer::safe_read(RemoteFile*, void*, unsigned) (
this=0x822d280, rf=0x84655d8, data=0x44070808, sz=256000)
at RingBuffer.cpp:493
ret = 0
#4 0x40207f24 in RingBuffer::ReadAheadThread() (this=0x822d280)
at RingBuffer.cpp:711
totfree = 256000
ret = 256000
used = 1112065
#5 0x40207c69 in RingBuffer::startReader(void*) (type=0x822d280)
at RingBuffer.cpp:650
rbuffer = (RingBuffer *) 0x822d280
#6 0x4106dd40 in pthread_start_thread () from /lib/libpthread.so.0
No symbol table info available.
#7 0x4106de42 in pthread_start_thread_event () from /lib/libpthread.so.0
No symbol table info available.
Thread 4 (Thread 32771 (LWP 10823)):
#0 0x41073a46 in nanosleep () from /lib/libpthread.so.0
No symbol table info available.
#1 0x00000001 in ?? ()
No symbol table info available.
#2 0x4106cec9 in pthread_cond_timedwait_relative () from /lib/libpthread.so.0
No symbol table info available.
#3 0x40e9e919 in QWaitCondition::wait(unsigned long) ()
from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#4 0x40196f0c in NuppelVideoPlayer::GetFrame(int, bool) (this=0x822af50,
onlyvideo=0, unsafe=false) at NuppelVideoPlayer.cpp:645
No locals.
#5 0x4019b128 in NuppelVideoPlayer::StartPlaying() (this=0x822af50)
at NuppelVideoPlayer.cpp:1900
output_video = 81926
pausecheck = 0
#6 0x40225b17 in SpawnDecode(void*) (param=0x822af50) at tv_play.cpp:140
nvp = (NuppelVideoPlayer *) 0x822af50
#7 0x4106dd40 in pthread_start_thread () from /lib/libpthread.so.0
No symbol table info available.
#8 0x4106de42 in pthread_start_thread_event () from /lib/libpthread.so.0
No symbol table info available.
Thread 3 (Thread 16386 (LWP 10820)):
#0 0x401cc9ed in ProgramInfo::GetProgramRecordingStatus(QSqlDatabase*) (
this=0x0, db=0x81f9038) at programinfo.cpp:603
No locals.
#1 0x401cd4c6 in ProgramInfo::ToggleRecord(QSqlDatabase*) (this=0x0,
db=0x81f9038) at programinfo.cpp:725
curType = 1075631266
#2 0x402360f4 in TV::ToggleRecord() (this=0x822cf30) at tv_play.cpp:2780
desc = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x822cd50,
static shared_null = 0x817c930}
starttime = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x842d9d0,
static shared_null = 0x817c930}
iconpath = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x857c9f8,
static shared_null = 0x817c930}
program_info = (ProgramInfo *) 0x0
category = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x822cd68,
static shared_null = 0x817c930}
endtime = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x842d9e8,
static shared_null = 0x817c930}
channum = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x822ccf0,
static shared_null = 0x817c930}
startts = {d = {jd = 0}, t = {ds = 0}}
msg = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x8207ad8,
static shared_null = 0x817c930}
title = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x8231a08,
static shared_null = 0x817c930}
subtitle = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x881bbc0,
static shared_null = 0x817c930}
callsign = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x857c990,
static shared_null = 0x817c930}
chanid = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x822cd28,
static shared_null = 0x817c930}
infoMap = {sh = 0x400574a8}
startts = {d = {jd = 0}, t = {ds = 0}}
program_info = (ProgramInfo *) 0x0
#3 0x4022cde9 in TV::ProcessKeypress(QKeyEvent*) (this=0x822cf30, e=0x82319c8)
at tv_play.cpp:1370
i = 0
was_doing_ff_rew = false
actions = {<QValueList<QString>> = {sh = 0x8239708}, <No data fields>}
action = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x8203f98,
static shared_null = 0x817c930}
handled = true
#4 0x4022aade in TV::RunTV() (this=0x822cf30) at tv_play.cpp:884
keypressed = (QKeyEvent *) 0x82319c8
updatecheck = 16
#5 0x4022a715 in TV::EventThread(void*) (param=0x822cf30) at tv_play.cpp:821
thetv = (class TV *) 0x822cf30
#6 0x4106dd40 in pthread_start_thread () from /lib/libpthread.so.0
No symbol table info available.
#7 0x4106de42 in pthread_start_thread_event () from /lib/libpthread.so.0
No symbol table info available.
Thread 2 (Thread 32769 (LWP 10819)):
#0 0x41267677 in poll () from /lib/libc.so.6
No symbol table info available.
#1 0x4106d94e in __pthread_manager () from /lib/libpthread.so.0
No symbol table info available.
#2 0x4106db9a in __pthread_manager_event () from /lib/libpthread.so.0
No symbol table info available.
Thread 1 (Thread 16384 (LWP 10815)):
#0 0x412418f6 in nanosleep () from /lib/libc.so.6
No symbol table info available.
#1 0xffffffa0 in ?? ()
No symbol table info available.
#2 0x0806849d in startTV() () at main.cpp:259
db = (struct QSqlDatabase *) 0x81f9038
tv = (class TV *) 0x822cf30
timer = {ds = 48724668}
tryTV = false
tryRecorder = false
quitAll = false
showDialogs = true
#3 0x0806957f in TVMenuCallback(void*, QString&) (data=0x81e62a0,
selection=@0x821e354) at main.cpp:362
sel = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x823a5f0,
static shared_null = 0x817c930}
#4 0x406e2b3a in ThemedMenuPrivate::handleAction(QString const&) (
this=0x821e258, action=@0x822803c) at themedmenu.cpp:2044
No locals.
#5 0x406e1385 in ThemedMenuPrivate::keyPressHandler(QKeyEvent*) (
this=0x821e258, e=0xbffff250) at themedmenu.cpp:1874
action = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x82038b0,
static shared_null = 0x817c930}
i = 0
lastbutton = (ThemedButton *) 0x8228000
oldrow = 0
handled = true
actions = {<QValueList<QString>> = {sh = 0x823ae48}, <No data fields>}
#6 0x406e3f46 in ThemedMenu::keyPressEvent(QKeyEvent*) (this=0x8212af8,
e=0xbffff250) at themedmenu.cpp:2230
No locals.
#7 0x40c4da0c in QWidget::event(QEvent*) () from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#8 0x40bbe3a5 in QApplication::internalNotify(QObject*, QEvent*) ()
from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#9 0x40bbdc51 in QApplication::notify(QObject*, QEvent*) ()
from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#10 0x4073b021 in MythMainWindow::keyPressEvent(QKeyEvent*) (this=0x8208d00,
e=0xbffff250) at mythdialogs.cpp:518
current = (struct QWidget *) 0x8212af8
#11 0x40c4da0c in QWidget::event(QEvent*) () from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#12 0x40bbe3a5 in QApplication::internalNotify(QObject*, QEvent*) ()
from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#13 0x40bbdc51 in QApplication::notify(QObject*, QEvent*) ()
from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#14 0x40b589c1 in QETWidget::translateKeyEvent(_XEvent const*, bool) ()
from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#15 0x40b545df in QApplication::x11ProcessEvent(_XEvent*) ()
from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#16 0x40b6ae77 in QEventLoop::processEvents(unsigned) ()
from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#17 0x40bd1606 in QEventLoop::enterLoop() () from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#18 0x40bbe651 in QApplication::enter_loop() ()
from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#19 0x4073bdc9 in MythDialog::exec() (this=0x8212af8) at mythdialogs.cpp:717
res = 1081326930
#20 0x0806a676 in RunMenu(QString) (themedir=
{static null = {static null = <same as static member of an already seen type>, d = 0x817c930, static shared_null = 0x817c930}, d = 0x8215748, static shared_null = 0x817c930}) at main.cpp:503
exitstatus = 0
#21 0x0806e402 in main (argc=1, argv=0xbffff984) at main.cpp:906
lcd_host = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x82126a8,
static shared_null = 0x817c930}
lcd_port = 13666
a = <incomplete type>
translator = <incomplete type>
logfile = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x81e61e8,
static shared_null = 0x817c930}
verboseString = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x81e6200,
static shared_null = 0x817c930}
pluginname = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x81e6218,
static shared_null = 0x817c930}
finfo = {fn = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x81e6270,
static shared_null = 0x817c930}, fic = 0x0, cache = true, symLink = false}
binname = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x81e6288,
static shared_null = 0x817c930}
logfd = -1
db = (struct QSqlDatabase *) 0x81f9038
themename = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x8217d38,
static shared_null = 0x817c930}
randomtheme = false
themedir = {static null = {
static null = <same as static member of an already seen type>,
d = 0x817c930, static shared_null = 0x817c930}, d = 0x8215748,
static shared_null = 0x817c930}
mainWindow = (class MythMainWindow *) 0x8208d00
pmanager = (MythPluginManager *) 0x8212ab0
mon = (class MediaMonitor *) 0x0
exitstatus = 1073775063
#22 0x411aa90c in __libc_start_main () from /lib/libc.so.6
No symbol table info available.
0x401cc9ed 603 if (record == NULL)
(gdb) (gdb) quit
The program is running. Exit anyway? (y or n)
The backend doesn't die, and only says:
2004-01-26 13:32:06 Changing from None to WatchingLiveTV
2004-01-26 13:32:06 Using profile 'Live TV' to record
2004-01-26 13:32:14 WriteBlock(): Aborting WriteBlock, write to socket failed!
2004-01-26 13:33:20 Changing from WatchingLiveTV to None
I'll leave it up to the experts.
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