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IDProjectCategoryView StatusDate SubmittedLast Update
0001759KdenliveMLTpublic2010-08-23 15:072010-10-09 15:30
ReporterGranjow 
Assigned To 
PrioritynormalSeveritycrashReproducibilityN/A
StatusnewResolutionopen 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
Summary0001759: Segfault in utils.c when loading project
DescriptionCrash on the last line here from utils.c. ic is 0x0.

int av_find_stream_info(AVFormatContext *ic)
{
    int i, count, ret, read_size, j;
    AVStream *st;
    AVPacket pkt1, *pkt;
    int64_t last_dts[MAX_STREAMS];
    int64_t duration_gcd[MAX_STREAMS]={0};
    int duration_count[MAX_STREAMS]={0};
    double (*duration_error)[MAX_STD_TIMEBASES];
    int64_t old_offset = url_ftell(ic->pb);


Called from producer_avformat.c where context is 0x0:
            // Check if we're seekable (something funny about mpeg here :-/)
            if ( strncmp( file, "pipe:", 5 ) &&
                 strncmp( file, "/dev/", 5 ) &&
                 strncmp( file, "http:", 5 ) &&
                 strncmp( file, "udp:", 4 ) &&
                 strncmp( file, "tcp:", 4 ) &&
                 strncmp( file, "rtsp:", 5 ) &&
                 strncmp( file, "rtp:", 4 ) )
            {
                this->seekable = av_seek_frame( context, -1, this->start_time, AVSEEK_FLAG_BACKWARD ) >= 0;
                mlt_properties_set_int( properties, "seekable", this->seekable );
                this->dummy_context = context;
                av_open_input_file( &context, file, NULL, 0, NULL );
                av_find_stream_info( context );



Called from producer_avformat.c where producer is not null:
    // Fetch the video format context
    AVFormatContext *context = this->video_format;

    // Get the video_index
    int index = mlt_properties_get_int( properties, "video_index" );

    // Reopen the file if necessary
    if ( !context && index > -1 )
    {
        mlt_events_block( properties, producer );
        producer_open( this, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
Additional InformationThis crash does not happen every time. Perhaps every 2nd time I open a project in kdenlive. Only every 10th time when debugging.

MLT commit 7b61770bec40c702f5688622c3036ec37c689574
TagsNo tags attached.
Build/Install MethodManual build from SVN
Attached Files

- Relationships

-  Notes
(0005659)
Granjow (developer)
2010-08-23 15:24

 Updated ffmpeg/mlt/kdenlive to current svn/git, still exists.
(0005770)
Granjow (developer)
2010-09-04 12:16

 Happened again today. Kdenlive shows «(i) Loading Clips» at the bottom left, 45% in the progress bar. Backtrace:

75:
0 av_find_stream_info utils.c 2168 0x00007fffe3bd9dc4
1 producer_open producer_avformat.c 544 0x00007fffe3e14077
2 producer_set_up_video producer_avformat.c 1419 0x00007fffe3e151d8
3 producer_get_frame producer_avformat.c 2022 0x00007fffe3e151d8
4 producer_get_frame mlt_producer.c 578 0x00007ffff78b4c4f
5 mlt_service_get_frame mlt_service.c 457 0x00007ffff78b3405
6 Mlt::Service::get_frame(int) /usr/lib/libmlt++.so.3 0 0x00007ffff7698efd
7 MyThread::run kthumb.cpp 90 0x0000000000511440
8 ?? /usr/lib/libQtCore.so.4 0 0x00007ffff421fe35
9 start_thread pthread_create.c 300 0x00007ffff25398ba
10 clone clone.S 112 0x00007ffff281e01d
11 ?? 0 0x0000000000000000


Backtrace of other threads:
86:
0 __lll_lock_wait lowlevellock.S 136 0x00007ffff2540be4
1 _L_lock_953 /lib/libpthread.so.0 0 0x00007ffff253c0e9
2 __pthread_mutex_lock pthread_mutex_lock.c 61 0x00007ffff253bf0b
3 mlt_cache_item_close mlt_cache.c 173 0x00007ffff78bd908
4 mlt_property_clear mlt_property.c 107 0x00007ffff78ae41a
5 mlt_property_close mlt_property.c 475 0x00007ffff78ae41a
6 mlt_properties_close mlt_properties.c 1161 0x00007ffff78aef34
7 mlt_frame_close mlt_frame.c 785 0x00007ffff78ab6d0
8 Mlt::Frame::~Frame() /usr/lib/libmlt++.so.3 0 0x00007ffff7691fad
9 MyThread::run kthumb.cpp 109 0x00000000005115cf
10 ?? /usr/lib/libQtCore.so.4 0 0x00007ffff421fe35
11 start_thread pthread_create.c 300 0x00007ffff25398ba
12 clone clone.S 112 0x00007ffff281e01d
13 ?? 0 0x0000000000000000

85/82/79-76:
0 __lll_lock_wait lowlevellock.S 136 0x00007ffff2540be4
1 _L_lock_953 /lib/libpthread.so.0 0 0x00007ffff253c0e9
2 __pthread_mutex_lock pthread_mutex_lock.c 61 0x00007ffff253bf0b
3 mlt_cache_get mlt_cache.c 442 0x00007ffff78bd692
4 producer_get_frame producer_avformat.c 1989 0x00007fffe3e14bf0
5 producer_get_frame mlt_producer.c 578 0x00007ffff78b4c4f
6 mlt_service_get_frame mlt_service.c 481 0x00007ffff78b34d2
7 Mlt::Service::get_frame(int) /usr/lib/libmlt++.so.3 0 0x00007ffff7698efd
8 MyThread::run kthumb.cpp 90 0x0000000000511440
9 ?? /usr/lib/libQtCore.so.4 0 0x00007ffff421fe35
10 start_thread pthread_create.c 300 0x00007ffff25398ba
11 clone clone.S 112 0x00007ffff281e01d
12 ?? 0 0x0000000000000000

84/83/80:
0 __lll_lock_wait lowlevellock.S 136 0x00007ffff2540be4
1 _L_lock_953 /lib/libpthread.so.0 0 0x00007ffff253c0e9
2 __pthread_mutex_lock pthread_mutex_lock.c 61 0x00007ffff253bf0b
3 mlt_cache_item_close mlt_cache.c 173 0x00007ffff78bd908
4 mlt_property_clear mlt_property.c 107 0x00007ffff78ae41a
5 mlt_property_close mlt_property.c 475 0x00007ffff78ae41a
6 mlt_properties_close mlt_properties.c 1161 0x00007ffff78aef34
7 mlt_frame_close mlt_frame.c 785 0x00007ffff78ab6d0
8 mlt_property_clear mlt_property.c 107 0x00007ffff78ae41a
9 mlt_property_close mlt_property.c 475 0x00007ffff78ae41a
10 mlt_properties_close mlt_properties.c 1161 0x00007ffff78aef34
11 mlt_frame_close mlt_frame.c 785 0x00007ffff78ab6d0
12 Mlt::Frame::~Frame() /usr/lib/libmlt++.so.3 0 0x00007ffff7691fad
13 MyThread::run kthumb.cpp 109 0x00000000005115cf
14 ?? /usr/lib/libQtCore.so.4 0 0x00007ffff421fe35
15 start_thread pthread_create.c 300 0x00007ffff25398ba
16 clone clone.S 112 0x00007ffff281e01d
17 ?? 0 0x0000000000000000

81:
0 __lll_lock_wait lowlevellock.S 136 0x00007ffff2540be4
1 _L_lock_953 /lib/libpthread.so.0 0 0x00007ffff253c0e9
2 __pthread_mutex_lock pthread_mutex_lock.c 61 0x00007ffff253bf0b
3 video_codec_init producer_avformat.c 1349 0x00007fffe3e1543f
4 producer_set_up_video producer_avformat.c 1471 0x00007fffe3e1543f
5 producer_get_frame producer_avformat.c 2022 0x00007fffe3e1543f
6 producer_get_frame mlt_producer.c 578 0x00007ffff78b4c4f
7 mlt_service_get_frame mlt_service.c 457 0x00007ffff78b3405
8 Mlt::Service::get_frame(int) /usr/lib/libmlt++.so.3 0 0x00007ffff7698efd
9 MyThread::run kthumb.cpp 90 0x0000000000511440
10 ?? /usr/lib/libQtCore.so.4 0 0x00007ffff421fe35
11 start_thread pthread_create.c 300 0x00007ffff25398ba
12 clone clone.S 112 0x00007ffff281e01d
13 ?? 0 0x0000000000000000


and so on.

19:
0 pthread_cond_wait@@GLIBC_2.3.2 pthread_cond_wait.S 162 0x00007ffff253e16c
1 consumer_thread consumer_sdl_preview.c 428 0x00007fffdecfa3d5
2 start_thread pthread_create.c 300 0x00007ffff25398ba
3 clone clone.S 112 0x00007ffff281e01d
4 ?? 0 0x0000000000000000

18:
0 pthread_cond_timedwait@@GLIBC_2.3.2 pthread_cond_timedwait.S 211 0x00007ffff253e4d9
1 mlt_consumer_get_frame mlt_consumer.c 502 0x00007ffff78b86ea
2 mlt_consumer_rt_frame mlt_consumer.c 900 0x00007ffff78b8825
3 consumer_thread consumer_sdl_still.c 563 0x00007fffdecfaa9c
4 start_thread pthread_create.c 300 0x00007ffff25398ba
5 clone clone.S 112 0x00007ffff281e01d
6 ?? 0 0x0000000000000000

11/10:
0 pthread_cond_timedwait@@GLIBC_2.3.2 pthread_cond_timedwait.S 211 0x00007ffff253e4d9
1 QWaitCondition::wait(QMutex*, unsigned long) /usr/lib/libQtCore.so.4 0 0x00007ffff4220df2
2 ?? /usr/lib/libQtCore.so.4 0 0x00007ffff4215e21
3 ?? /usr/lib/libQtCore.so.4 0 0x00007ffff421fe35
4 start_thread pthread_create.c 300 0x00007ffff25398ba
5 clone clone.S 112 0x00007ffff281e01d
6 ?? 0 0x0000000000000000

1:
0 __lll_lock_wait lowlevellock.S 136 0x00007ffff2540be4
1 _L_lock_953 /lib/libpthread.so.0 0 0x00007ffff253c0e9
2 __pthread_mutex_lock pthread_mutex_lock.c 61 0x00007ffff253bf0b
3 mlt_cache_put mlt_cache.c 362 0x00007ffff78bd98f
4 producer_avformat_init producer_avformat.c 223 0x00007fffe3e1470b
5 mlt_factory_producer mlt_factory.c 242 0x00007ffff78bba4a
6 create_from producer_loader.c 43 0x00007fffddd05545
7 create_producer producer_loader.c 94 0x00007fffddd05545
8 producer_loader_init producer_loader.c 168 0x00007fffddd05898
9 mlt_factory_producer mlt_factory.c 242 0x00007ffff78bba4a
10 Mlt::Producer::Producer(Mlt::Profile&, char const*, char const*) /usr/lib/libmlt++.so.3 0 0x00007ffff76958ae
11 Render::getFileProperties renderer.cpp 643 0x000000000049bd93
12 Render::qt_metacall renderer.moc 148 0x000000000049e625
13 QMetaObject::activate(QObject*, QMetaObject const*, int, void**) /usr/lib/libQtCore.so.4 0 0x00007ffff4322346
14 ProjectList::getFileProperties projectlist.moc 268 0x0000000000473f28
15 ProjectList::slotProcessNextClipInQueue projectlist.cpp 987 0x0000000000478e81
16 ProjectList::qt_metacall projectlist.moc 243 0x000000000047ddca
17 QMetaObject::activate(QObject*, QMetaObject const*, int, void**) /usr/lib/libQtCore.so.4 0 0x00007ffff4322346
18 ?? /usr/lib/libQtCore.so.4 0 0x00007ffff432984f
19 QObject::event(QEvent*) /usr/lib/libQtCore.so.4 0 0x00007ffff431eba3
20 QApplicationPrivate::notify_helper(QObject*, QEvent*) /usr/lib/libQtGui.so.4 0 0x00007ffff345432c
21 QApplication::notify(QObject*, QEvent*) /usr/lib/libQtGui.so.4 0 0x00007ffff345a80b
22 KApplication::notify(QObject*, QEvent*) /usr/lib/libkdeui.so.5 0 0x00007ffff6fd9836
23 QCoreApplication::notifyInternal(QObject*, QEvent*) /usr/lib/libQtCore.so.4 0 0x00007ffff430f15c
24 ?? /usr/lib/libQtCore.so.4 0 0x00007ffff433bed2
25 ?? /usr/lib/libQtCore.so.4 0 0x00007ffff4338a48
26 g_main_context_dispatch /lib/libglib-2.0.so.0 0 0x00007fffeeb9f6c2
27 ?? /lib/libglib-2.0.so.0 0 0x00007fffeeba3538
28 g_main_context_iteration /lib/libglib-2.0.so.0 0 0x00007fffeeba36ec
29 QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) /usr/lib/libQtCore.so.4 0 0x00007ffff4338713
30 ?? /usr/lib/libQtGui.so.4 0 0x00007ffff350414e
31 QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) /usr/lib/libQtCore.so.4 0 0x00007ffff430da82
32 QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) /usr/lib/libQtCore.so.4 0 0x00007ffff430de5c
33 QCoreApplication::exec() /usr/lib/libQtCore.so.4 0 0x00007ffff4312aeb
34 main main.cpp 88 0x000000000044fa74
(0005772)
Granjow (developer)
2010-09-04 12:28

 Actually I could just post the backtraces of all threads that are not locked:

88:
0 __lll_lock_wait lowlevellock.S 136 0x00007ffff2540be4
1 _L_lock_953 /lib/libpthread.so.0 0 0x00007ffff253c0e9
2 __pthread_mutex_lock pthread_mutex_lock.c 61 0x00007ffff253bf0b
3 producer_avformat_close producer_avformat.c 2038 0x00007fffe3e14740
4 cache_object_close mlt_cache.c 131 0x00007ffff78bd8cf
5 mlt_cache_item_close mlt_cache.c 174 0x00007ffff78bd918
6 mlt_property_clear mlt_property.c 107 0x00007ffff78ae41a
7 mlt_property_close mlt_property.c 475 0x00007ffff78ae41a
8 mlt_properties_close mlt_properties.c 1161 0x00007ffff78aef34
9 mlt_frame_close mlt_frame.c 785 0x00007ffff78ab6d0
10 mlt_property_clear mlt_property.c 107 0x00007ffff78ae41a
11 mlt_property_close mlt_property.c 475 0x00007ffff78ae41a
12 mlt_properties_close mlt_properties.c 1161 0x00007ffff78aef34
13 mlt_frame_close mlt_frame.c 785 0x00007ffff78ab6d0
14 Mlt::Frame::~Frame() /usr/lib/libmlt++.so.3 0 0x00007ffff7691fad
15 MyThread::run kthumb.cpp 109 0x00000000005115cf
16 ?? /usr/lib/libQtCore.so.4 0 0x00007ffff421fe35
17 start_thread pthread_create.c 300 0x00007ffff25398ba
18 clone clone.S 112 0x00007ffff281e01d
19 ?? 0 0x0000000000000000

67:
0 decode_block mjpegdec.c 431 0x00007fffe30651f9
1 mjpeg_decode_scan mjpegdec.c 813 0x00007fffe30651f9
2 ff_mjpeg_decode_sos mjpegdec.c 998 0x00007fffe30651f9
3 ff_mjpeg_decode_frame mjpegdec.c 1465 0x00007fffe3066ed6
4 avcodec_decode_video2 utils.c 610 0x00007fffe319b9e0
5 try_decode_frame utils.c 2049 0x00007fffe3bda926
6 av_find_stream_info utils.c 2326 0x00007fffe3bda926
7 producer_open producer_avformat.c 507 0x00007fffe3e13b5d
8 producer_set_up_video producer_avformat.c 1419 0x00007fffe3e151d8
9 producer_get_frame producer_avformat.c 2022 0x00007fffe3e151d8
10 producer_get_frame mlt_producer.c 578 0x00007ffff78b4c4f
11 mlt_service_get_frame mlt_service.c 457 0x00007ffff78b3405
12 Mlt::Service::get_frame(int) /usr/lib/libmlt++.so.3 0 0x00007ffff7698efd
13 MyThread::run kthumb.cpp 90 0x0000000000511440
14 ?? /usr/lib/libQtCore.so.4 0 0x00007ffff421fe35
15 start_thread pthread_create.c 300 0x00007ffff25398ba
16 clone clone.S 112 0x00007ffff281e01d
17 ?? 0 0x0000000000000000

58: (crash here)
0 mlt_properties_find mlt_properties.c 348 0x00007ffff78aecd6
1 mlt_properties_get_int mlt_properties.c 720 0x00007ffff78aecd6
2 producer_set_up_video producer_avformat.c 1413 0x00007fffe3e14c88
3 producer_get_frame producer_avformat.c 2022 0x00007fffe3e14c88
4 producer_get_frame mlt_producer.c 578 0x00007ffff78b4c4f
5 mlt_service_get_frame mlt_service.c 489 0x00007ffff78b34f7
6 Mlt::Service::get_frame(int) /usr/lib/libmlt++.so.3 0 0x00007ffff7698efd
7 MyThread::run kthumb.cpp 90 0x0000000000511440
8 ?? /usr/lib/libQtCore.so.4 0 0x00007ffff421fe35
9 start_thread pthread_create.c 300 0x00007ffff25398ba
10 clone clone.S 112 0x00007ffff281e01d
11 ?? 0 0x0000000000000000

57:
0 __lll_lock_wait lowlevellock.S 136 0x00007ffff2540be4
1 _L_lock_953 /lib/libpthread.so.0 0 0x00007ffff253c0e9
2 __pthread_mutex_lock pthread_mutex_lock.c 61 0x00007ffff253bf0b
3 producer_set_up_video producer_avformat.c 1424 0x00007fffe3e151ef
4 producer_get_frame producer_avformat.c 2022 0x00007fffe3e151ef
5 producer_get_frame mlt_producer.c 578 0x00007ffff78b4c4f
6 mlt_service_get_frame mlt_service.c 481 0x00007ffff78b34d2
7 Mlt::Service::get_frame(int) /usr/lib/libmlt++.so.3 0 0x00007ffff7698efd
8 MyThread::run kthumb.cpp 90 0x0000000000511440
9 ?? /usr/lib/libQtCore.so.4 0 0x00007ffff421fe35
10 start_thread pthread_create.c 300 0x00007ffff25398ba
11 clone clone.S 112 0x00007ffff281e01d
12 ?? 0 0x0000000000000000

39:
0 __lll_lock_wait lowlevellock.S 136 0x00007ffff2540be4
1 _L_lock_953 /lib/libpthread.so.0 0 0x00007ffff253c0e9
2 __pthread_mutex_lock pthread_mutex_lock.c 61 0x00007ffff253bf0b
3 producer_set_up_video producer_avformat.c 1424 0x00007fffe3e151ef
4 producer_get_frame producer_avformat.c 2022 0x00007fffe3e151ef
5 producer_get_frame mlt_producer.c 578 0x00007ffff78b4c4f
6 mlt_service_get_frame mlt_service.c 489 0x00007ffff78b34f7
7 Mlt::Service::get_frame(int) /usr/lib/libmlt++.so.3 0 0x00007ffff7698efd
8 MyThread::run kthumb.cpp 90 0x0000000000511440
9 ?? /usr/lib/libQtCore.so.4 0 0x00007ffff421fe35
10 start_thread pthread_create.c 300 0x00007ffff25398ba
11 clone clone.S 112 0x00007ffff281e01d
12 ?? 0 0x0000000000000000
(0005954)
Granjow (developer)
2010-10-09 15:30
edited on: 2010-10-09 15:31

 Got this error again when loading a project.
thumbs/ directory cleaned before.

ffmpeg/MLT/kdenlive all clean builds (make clean or rm -rf build/) from current svn.

- Issue History
Date Modified Username Field Change
2010-08-23 15:07 Granjow New Issue
2010-08-23 15:24 Granjow Note Added: 0005659
2010-08-23 15:27 Granjow Summary Crash when loading project => Segfault in utils.c when loading project
2010-09-04 12:16 Granjow Note Added: 0005770
2010-09-04 12:28 Granjow Note Added: 0005772
2010-10-09 15:30 Granjow Note Added: 0005954
2010-10-09 15:31 Granjow Note Edited: 0005954 View Revisions

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