Package: kdenlive
Version: 16.08.0-1
Severity: important

Hello,

Kdenlive crashed when I tried to delete an audio track. Backtrace:

```
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `kdenlive'.
Program terminated with signal SIGABRT, Aborted.
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58
58      ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
[Current thread is 1 (Thread 0x7f6c7cfe3700 (LWP 19333))]
#0  0x00007f6d17b55fdf in __GI_raise (sig=sig@entry=6) at 
../sysdeps/unix/sysv/linux/raise.c:58
        set = {__val = {0, 28, 140106639880561, 47244640257, 3432, 
140106639880563, 140105645387477, 47244640257, 140103930226672, 
140105645387479, 0, 0, 0, 206158430240, 140103930226720, 140103930226528}}
        pid = <optimized out>
        tid = <optimized out>
#1  0x00007f6d17b5740a in __GI_abort () at abort.c:89
        save_stage = 2
        act = 
          {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, 
sa_mask = {__val = {0 <repeats 11 times>, 140103930225520, 128, 
140103930225520, 85, 140103930226144}}, sa_flags = -11, sa_restorer = 
0x7f6c7cfe2380}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f6d17b93bd0 in __libc_message (do_abort=do_abort@entry=2, 
fmt=fmt@entry=0x7f6d17c88c10 "*** Error in `%s': %s: 0x%s ***\n") at 
../sysdeps/posix/libc_fatal.c:175
Python Exception <class 'gdb.error'> Attempt to dereference a generic pointer.: 
#3  0x00007f6d17b99fa6 in malloc_printerr (action=3, str=0x7f6d17c88d68 "double 
free or corruption (fasttop)", ptr=<optimized out>, ar_ptr=<optimized out>) at 
malloc.c:5046
        buf = "00007f6ca4007b10"
        cp = <optimized out>
        ar_ptr = <optimized out>
        ptr = <optimized out>
        str = 0x7f6d17c88d68 "double free or corruption (fasttop)"
        action = 3
#4  0x00007f6d17b9a79e in _int_free (av=0x7f6ca4000020, p=0x7f6ca4007b00, 
have_lock=0) at malloc.c:3902
        size = <optimized out>
        fb = <optimized out>
        nextchunk = <optimized out>
        nextsize = <optimized out>
        nextinuse = <optimized out>
        prevsize = <optimized out>
        bck = <optimized out>
        fwd = <optimized out>
        errstr = <optimized out>
        locked = <optimized out>
        __func__ = "_int_free"
#5  0x00007f6ce339546a in on_start_element (context=0x7f6c6800aa70, 
name=0x7f6c6800cdc7 "profile", atts=0x7f6c68006fa0) at producer_xml.c:346
        p = 0x55dd07336200
        xmlcontext = <optimized out>
        context = 0x7f6c6800aa70
#6  0x00007f6ce339546a in on_start_element (ctx=<optimized out>, 
name=0x7f6c6800cdc7 "profile", atts=0x7f6c68006fa0) at producer_xml.c:1240
        xmlcontext = <optimized out>
        context = 0x7f6c6800aa70
#7  0x00007f6cfaae8a01 in xmlParseStartTag__internal_alias 
(ctxt=ctxt@entry=0x7f6c68006c30) at ../../parser.c:8741
        name = 0x7f6c6800cdc7 "profile"
        attname = <optimized out>
        attvalue = 0x7f6c68006f80 "709"
        atts = 0x7f6c68006fa0
        nbatts = 22
        maxatts = 44
        i = <optimized out>
#8  0x00007f6cfaaf5eb0 in xmlParseElement__internal_alias 
(ctxt=ctxt@entry=0x7f6c68006c30) at ../../parser.c:10173
        name = <optimized out>
        prefix = 0x0
        URI = 0x0
        node_info = {node = 0x7f6c68007eb0, begin_pos = 140106038937697, 
begin_line = 0, end_pos = 140103930226704, end_line = 94489280526}
        line = 2
        tlen = 0
        ret = <optimized out>
        nsNr = 0
#9  0x00007f6cfaaf5412 in xmlParseContent__internal_alias (ctxt=0x7f6c68006c30) 
at ../../parser.c:10083
        test = <optimized out>
        cons = 0
        cur = <optimized out>
#10 0x00007f6cfaaf5d63 in xmlParseElement__internal_alias 
(ctxt=ctxt@entry=0x7f6c68006c30) at ../../parser.c:10256
        name = 0x7f6c6800cd97 "mlt"
        prefix = 0x0
        URI = 0x0
        node_info = {node = 0xfffffffe, begin_pos = 0, begin_line = 
140103578079688, end_pos = 140103578053680, end_line = 140103578059440}
        line = 2
        tlen = 0
        ret = 0x0
        nsNr = 0
#11 0x00007f6cfaaf66eb in xmlParseDocument__internal_alias 
(ctxt=ctxt@entry=0x7f6c68006c30) at ../../parser.c:10953
        start = "<?xm"
        enc = <optimized out>
#12 0x00007f6ce339650c in producer_xml_init (profile=0x55dd07336200, 
servtype=<optimized out>, id=<optimized out>, data=0x7f6c6800d1c8 "<?xml 
version=\"1.0\" encoding=\"utf-8\"?>\n<mlt LC_NUMERIC=\"en_GB.UTF-8\" 
version=\"6.2.0\" root=\"/home/borisov\" title=\"Anonymous Submission\" 
parent=\"25\" in=\"0\" out=\"1257\"><profile description=\"1920x1200 15."...) 
at producer_xml.c:1760
        sax = 0x7f6c6800abd0
        sax_orig = 0x7f6c680074a0
        context = 0x7f6c6800aa70
        properties = 0x0
        i = 0
        xmlcontext = 0x7f6c68006c30
        well_formed = 0
        filename = <optimized out>
        is_filename = 0
        type = 1744884168
        service = <optimized out>
#13 0x00007f6d1e7ff0ea in mlt_factory_producer (profile=0x55dd07336200, 
service=service@entry=0x55dd04dd8a5d "xml-string", 
resource=resource@entry=0x7f6c6800d1c8) at mlt_factory.c:315
        obj = 0x0
#14 0x00007f6d1e5cffb6 in Mlt::Producer::Producer(Mlt::Profile&, char const*, 
char const*) (this=0x7f6c68003610, profile=..., id=0x55dd04dd8a5d "xml-string", 
service=0x7f6c6800d1c8 "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<mlt 
LC_NUMERIC=\"en_GB.UTF-8\" version=\"6.2.0\" root=\"/home/borisov\" 
title=\"Anonymous Submission\" parent=\"25\" in=\"0\" out=\"1257\"><profile 
description=\"1920x1200 15."...)
    at MltProducer.cpp:39
#15 0x000055dd04a7a87f in Clip::clone() (this=this@entry=0x7f6c7cfe2a80) at 
./src/timeline/clip.cpp:177
#16 0x000055dd04d2d568 in ProjectClip::thumbProducer() 
(this=this@entry=0x55dd091ee7e0) at ./src/bin/projectclip.cpp:404
        locker = {val = 94407829153921}
        prod = {<Mlt::Service> = {<Mlt::Properties> = {_vptr.Properties = 
0x7f6d1e7daf78 <vtable for Mlt::Producer+16>, instance = 0x0}, instance = 
0x55dd0a0a0cb0}, instance = 0x55dd0a0a0cb0, parent_ = 0x0}
        clip = 
            {<QObject> = {<No data fields>}, static staticMetaObject = {d = 
{superdata = 0x7f6d18c25820 <QObject::staticMetaObject>, stringdata = 
0x55dd04e5cbc0 <qt_meta_stringdata_Clip>, data = 0x55dd04e5cb40 
<qt_meta_data_Clip>, static_metacall = 0x55dd04d90fe0 
<Clip::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, 
relatedMetaObjects = 0x0, extradata = 0x0}}, m_producer = {<Mlt::Service> = 
{<Mlt::Properties> = {_vptr.Properties = 0x7f6d1e7daf78 <vtable for 
Mlt::Producer+16>, instance = 0x0}, instance = 0x55dd0a0a0cb0}, instance = 
0x55dd0a0a0cb0, parent_ = 0x0}}
#17 0x000055dd04d2e7ac in ProjectClip::doExtractImage() (this=0x55dd091ee7e0) 
at ./src/bin/projectclip.cpp:881
        prod = <optimized out>
        fullWidth = <optimized out>
        ok = false
        thumbFolder = {d_ptr = {d = 0x1}}
        max = <optimized out>
#18 0x000055dd04a125dd in QtConcurrent::RunFunctionTask<void>::run() 
(this=0x55dd09220b50) at 
/usr/include/x86_64-linux-gnu/qt5/QtConcurrent/qtconcurrentrunbase.h:130
        this = 0x55dd09220b50
#19 0x00007f6d1880707f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f6d1880ad78 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f6d147cd464 in start_thread (arg=0x7f6c7cfe3700) at 
pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f6c7cfe3700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {140103930230528, 
3305652843185264943, 0, 140734007165471, 0, 140106661949504, 
-3226564960468248273, -3226229596302386897}, mask_was_saved = 0}}, priv = {pad 
= {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#22 0x00007f6d17c0b97f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
```


Best regards,

George


-- System Information:
Debian Release: stretch/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.7.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages kdenlive depends on:
ii  ffmpeg                       7:3.1.3-1+b3
ii  kded5                        5.25.0-1
ii  kdenlive-data                16.08.0-1
ii  kinit                        5.25.0-1
ii  kio                          5.25.0-1
ii  libc6                        2.24-2
ii  libgcc1                      1:6.2.0-3
ii  libgl1-mesa-glx [libgl1]     12.0.2-1
ii  libglu1-mesa [libglu1]       9.0.0-2.1
ii  libkf5archive5               5.25.0-1
ii  libkf5attica5                5.25.0-1
ii  libkf5auth5                  5.25.0-1
ii  libkf5bookmarks5             5.25.0-1
ii  libkf5codecs5                5.25.0-1
ii  libkf5completion5            5.25.0-1
ii  libkf5configcore5            5.25.0-1
ii  libkf5configgui5             5.25.0-1
ii  libkf5configwidgets5         5.25.0-1
ii  libkf5coreaddons5            5.25.0-1
ii  libkf5crash5                 5.25.0-1
ii  libkf5dbusaddons5            5.25.0-1
ii  libkf5filemetadata3          5.25.0-1
ii  libkf5guiaddons5             5.25.0-1
ii  libkf5i18n5                  5.25.0-1
ii  libkf5iconthemes5            5.25.0-1
ii  libkf5itemviews5             5.25.0-1
ii  libkf5jobwidgets5            5.25.0-1
ii  libkf5kiocore5               5.25.0-1
ii  libkf5kiofilewidgets5        5.25.0-1
ii  libkf5kiowidgets5            5.25.0-1
ii  libkf5newstuff5              5.25.0-1
ii  libkf5notifications5         5.25.0-1
ii  libkf5notifyconfig5          5.25.0-1
ii  libkf5service-bin            5.25.0-1
ii  libkf5service5               5.25.0-1
ii  libkf5solid5                 5.25.0-1
ii  libkf5sonnetui5              5.25.0-1
ii  libkf5textwidgets5           5.25.0-1
ii  libkf5widgetsaddons5         5.25.0-1
ii  libkf5xmlgui5                5.25.0-1
ii  libmlt++3                    6.2.0-1+b1
ii  libmlt6                      6.2.0-1+b1
ii  libqt5concurrent5            5.6.1+dfsg-3+b1
ii  libqt5core5a                 5.6.1+dfsg-3+b1
ii  libqt5dbus5                  5.6.1+dfsg-3+b1
ii  libqt5gui5                   5.6.1+dfsg-3+b1
ii  libqt5network5               5.6.1+dfsg-3+b1
ii  libqt5qml5                   5.6.1-7
ii  libqt5quick5                 5.6.1-7
ii  libqt5script5                5.6.1+dfsg-2
ii  libqt5svg5                   5.6.1-2
ii  libqt5widgets5               5.6.1+dfsg-3+b1
ii  libqt5xml5                   5.6.1+dfsg-3+b1
ii  libstdc++6                   6.2.0-3
ii  libv4l-0                     1.10.1-1
ii  melt                         6.2.0-1+b1
ii  oxygen-icon-theme            5:5.25.0-1
ii  qml-module-qtquick-controls  5.6.1-2
ii  qml-module-qtquick2          5.6.1-7

Versions of packages kdenlive recommends:
ii  dvdauthor        0.7.0-1.4+b1
ii  dvgrab           3.5+git20160707.1.e46042e-1
ii  frei0r-plugins   1.4-3+b2
ii  genisoimage      9:1.1.11-3
ii  recordmydesktop  0.3.8.1+svn602-1+b1
ii  swh-plugins      0.4.16+git20160602~repack1-2

Versions of packages kdenlive suggests:
pn  khelpcenter  <none>

-- no debconf information

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