Bug#803325: vlc: "failed to create video output" with video memory output; SIGSEGV with other video output

Sebastian Ramacher sramacher at debian.org
Wed Oct 28 19:52:37 UTC 2015

Control: tags -1 + moreinfo

On 2015-10-28 15:46:11, User User wrote:
> Package: vlc
> Version: 2.2.1-4+b1
> Severity: normal
> Dear Maintainer,
>    * What led up to the situation?
> Any video played causes VLC to crash.
>    * What exactly did you do (or not do) that was effective (or
>      ineffective)?
> Launching from file manager, ommand line, or media library any video file crashes VLC on this up-to-date Debian testing system. I disabled VDPAU, window decoration, accelerated video output - but there was no change.
>    * What was the outcome of this action?
> Segmentation fault.
>    * What outcome did you expect instead?
> Video rendered.
> After installing vlc-dbg, and runing
> gdb --args vlc -vvvv /home/user/somefile.mp4
> I got:
> (gdb) run
> Starting program: /usr/bin/vlc -vvvv /home/user/somefile.mp4
> [Thread debugging using libthread_db enabled]
> Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
> VLC media player 2.2.1 Terry Pratchett (Weatherwax) (revision 2.2.1-0-ga425c42)
> [0000000000605148] core libvlc debug: VLC media player - 2.2.1 Terry Pratchett (Weatherwax)
> [0000000000605148] core libvlc debug: Copyright © 1996-2015 the VideoLAN team
> [0000000000605148] core libvlc debug: revision 2.2.1-0-ga425c42
> [0000000000605148] core libvlc debug: configured with ./configure  '--includedir=${prefix}/include' '--mandir=${prefix}/share/man' '--infodir=${prefix}/share/info' '--localstatedir=/var' '--libdir=${prefix}/lib/x86_64-linux-gnu' '--libexecdir=${prefix}/lib/x86_64-linux-gnu' '--disable-dependency-tracking' '--build=x86_64-linux-gnu' 'CPPFLAGS=-D_FORTIFY_SOURCE=2' 'LDFLAGS=-Wl,-z,relro -Wl,--as-needed' '--config-cache' '--disable-maintainer-mode' '--disable-silent-rules' '--disable-update-check' '--enable-fast-install' '--prefix=/usr' '--docdir=/usr/share/doc/vlc-nox' '--libdir=/usr/lib' '--sysconfdir=/etc' '--with-binary-version=4+b1' '--enable-a52' '--enable-aa' '--enable-bluray' '--enable-bonjour' '--enable-caca' '--enable-chromaprint' '--enable-dbus' '--enable-dca' '--enable-directfb' '--enable-dvbpsi' '--enable-dvdnav' '--enable-faad' '--enable-flac' '--enable-fluidsynth' '--enable-freerdp' '--enable-freetype' '--enable-fribidi' '--enable-gles1' '--enable-gles2' '--enable-gnutls' '--enable-jack' '--enable-kate' '--enable-libass' '--enable-libmpeg2' '--enable-libxml2' '--enable-lirc' '--enable-live555' '--enable-mad' '--enable-mkv' '--enable-mod' '--enable-mpc' '--enable-mtp' '--enable-mux_ogg' '--enable-ncurses' '--enable-notify' '--enable-ogg' '--enable-opus' '--enable-pulse' '--enable-qt' '--enable-realrtsp' '--enable-samplerate' '--enable-schroedinger' '--enable-sdl' '--enable-sdl-image' '--enable-sftp' '--enable-shine' '--enable-shout' '--enable-skins2' '--enable-speex' '--enable-svg' '--enable-svgdec' '--enable-taglib' '--enable-theora' '--enable-twolame' '--enable-upnp' '--enable-vcdx' '--enable-vdpau' '--enable-vnc' '--enable-vorbis' '--enable-x264' '--enable-x265' '--enable-zvbi' '--with-kde-solid=/usr/share/kde4/apps/solid/actions/' '--disable-decklink' '--disable-dxva2' '--disable-fdkaac' '--disable-gnomevfs' '--disable-goom' '--disable-libtar' '--disable-mfx' '--disable-opencv' '--disable-projectm' '--disable-sndio' '--disable-telx' '--disable-vpx' '--disable-vsxu' '--disable-wasapi' '--enable-alsa' '--enable-atmo' '--enable-dc1394' '--enable-dv1394' '--enable-linsys' '--enable-omxil' '--enable-udev' '--enable-v4l2' '--enable-libva' '--enable-vcd' '--enable-smbclient' '--disable-oss' '--enable-crystalhd' '--enable-mmx' '--enable-sse' '--disable-neon' '--disable-altivec' 'CFLAGS=-g -O2 -fstack-protector-strong -Wformat -Werror=format-security' 'CXXFLAGS=-g -O2 -fstack-protector-strong -Wformat -Werror=format-security' 'build_alias=x86_64-linux-gnu' 'OBJCFLAGS=-g -O2 -fstack-protector-strong -Wformat -Werror=format-security'
> [0000000000605148] core libvlc debug: searching plug-in modules
> [0000000000605148] core libvlc debug: loading plugins cache file /usr/lib/vlc/plugins/plugins.dat
> [0000000000605148] core libvlc debug: recursively browsing `/usr/lib/vlc/plugins'
> [0000000000605148] core libvlc debug: saving plugins cache /usr/lib/vlc/plugins/plugins.dat
> [0000000000605148] core libvlc debug: plug-ins loaded: 460 modules
> [0000000000605148] core libvlc debug: opening config file (/home/user/.config/vlc/vlcrc)
> [0000000000605148] core libvlc debug: translation test: code is "C"
> [0000000000605148] core libvlc debug: CPU has capabilities MMX MMXEXT SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX FPU 
> [00000000006d4f28] core input debug: Creating an input for 'Media Library'
> [00000000006d4f28] core input debug: Input is a meta file: disabling unneeded options
> [00000000006d4f28] core input debug: using timeshift granularity of 50 MiB, in path '/tmp'
> [00000000006d4f28] core input debug: `file/xspf-open:///home/user/.local/share/vlc/ml.xspf' gives access `file' demux `xspf-open' path `/home/user/.local/share/vlc/ml.xspf'
> [00000000006d4f28] core input debug: creating demux: access='file' demux='xspf-open' location='/home/user/.local/share/vlc/ml.xspf' file='/home/user/.local/share/vlc/ml.xspf'
> [00000000006d9b38] core demux debug: looking for access_demux module matching "file": 20 candidates
> [00000000006d9b38] core demux debug: no access_demux modules matched
> [00000000006d4f28] core input debug: creating access 'file' location='/home/user/.local/share/vlc/ml.xspf', path='/home/user/.local/share/vlc/ml.xspf'
> etc., ending with:
> [00007fffc4004ac8] core volume debug: using audio volume module "float_mixer"
> [0000000000700ab8] core audio output debug: input 'f32l' 44100 Hz Stereo frame=1 samples/8 bytes
> [00007fffc4008c78] core audio filter debug: looking for audio filter module matching "scaletempo": 14 candidates
> [00007fffc4008c78] scaletempo audio filter debug: format: 44100 rate, 2 nch, 4 bps, fl32
> [00007fffc4008c78] scaletempo audio filter debug: params: 30 stride, 0.200 overlap, 14 search
> [00007fffc4008c78] scaletempo audio filter debug: 1.000 scale, 1323.000 stride_in, 1323 stride_out, 1059 standing, 264 overlap, 617 search, 2204 queue, fl32 mode
> [00007fffc4008c78] core audio filter debug: using audio filter module "scaletempo"
> [0000000000700ab8] core audio output debug: conversion: 'f32l'->'f32l' 44100 Hz->44100 Hz Stereo->Stereo
> [0000000000700ab8] core audio output debug: conversion pipeline complete
> [00007fffc400ffe8] core audio filter debug: looking for audio filter module matching "equalizer": 14 candidates
> [00007fffa00103a8] swscale scale debug: 32x32 (32x32) chroma: YUVA -> 16x16 (16x16) chroma: RGBA with scaling using Bicubic (good quality)
> [00007fffa00103a8] core scale debug: using video filter2 module "swscale"
> [00007fffa00380c8] core scale debug: looking for video filter2 module matching "any": 63 candidates
> [00007fffc400ffe8] equalizer audio filter error: No preset selected
> [00007fffc400ffe8] core audio filter debug: no audio filter modules matched
> [0000000000700ab8] core audio output error: cannot add user audio filter "equalizer" (skipped)
> [0000000000700ab8] core audio output debug: conversion: 'f32l'->'f32l' 44100 Hz->44100 Hz Stereo->Stereo
> [0000000000700ab8] core audio output debug: conversion pipeline complete
> [00007fffc400ffe8] core audio resampler debug: looking for audio resampler module matching "any": 3 candidates
> [00007fffc400ffe8] core audio resampler debug: using audio resampler module "samplerate"
> [00007fffc0f77958] core decoder debug: End of audio preroll
> [00007fffa00380c8] yuvp scale debug: YUVP to YUVA converter
> [00007fffa00380c8] core scale debug: using video filter2 module "yuvp"
> [00007fffa000b7f8] core video output debug: Deinterlacing available
> [00007fffa000b7f8] core video output debug: deinterlace 0, mode blend, is_needed 0
> [New Thread 0x7fffac19f700 (LWP 16832)]
> [00007fffa000b7f8] core video output debug: Opening vout display wrapper
> [00007fff9c001268] core vout display debug: looking for vout display module matching "any": 15 candidates
> [00007fff9c0023f8] core window debug: looking for vout window xid module matching "qt4,any": 4 candidates
> [00007fff9c0023f8] qt4 window debug: requesting video window...
> [00000000007f67f8] qt4 interface debug: Video was requested 0, 0
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 0x7fffeefe7700 (LWP 16821)]
> 0x00007fffecfebf39 in XGetWindowAttributes () from /usr/lib/x86_64-linux-gnu/libX11.so.6
> For completion, here is the backtrace:
> (gdb) bt
> #0  0x00007fffecfebf39 in XGetWindowAttributes () from /usr/lib/x86_64-linux-gnu/libX11.so.6
> #1  0x00007fffe5aacd8d in VideoWidget::request (this=0x7fffcc106bf0, pi_x=<optimized out>, pi_y=<optimized out>, pi_width=<optimized out>, pi_height=<optimized out>, 
>     b_keep_size=<optimized out>) at components/interface_widgets.cpp:149
> #2  0x00007fffe59d041b in MainInterface::getVideoSlot (this=0x7fffcc0cd3d0, p_id=0x7fffac19e3d0, pi_x=0x7fffac19e3f4, pi_y=0x7fffac19e3f8, pi_width=0x7fffac19e3fc, pi_height=0x7fffac19e400)
>     at main_interface.cpp:741
> #3  0x00007fffe5b38b6b in MainInterface::qt_static_metacall (_o=0x7fffcc0cd3d0, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at main_interface.moc.cpp:288
> #4  0x00007fffe4b7f1c1 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #5  0x00007fffe545dedb in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #6  0x00007fffe556f37b in QMainWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #7  0x00007fffe541bb8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #8  0x00007fffe5421230 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #9  0x00007fffe4b4da8b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #10 0x00007fffe4b4fbc7 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #11 0x00007fffe4ba4a23 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #12 0x00007fffe43b3fe7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #13 0x00007fffe43b4240 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #14 0x00007fffe43b42ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #15 0x00007fffe4ba4e2f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #16 0x00007fffe4b4b2ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #17 0x00007fffe4b52e3c in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #18 0x00007fffe59be674 in Thread (obj=0x7f67f8) at qt4.cpp:585
> #19 0x00007ffff79a60a4 in start_thread (arg=0x7fffeefe7700) at pthread_create.c:309
> #20 0x00007ffff74d706d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
> Of note, this is a dual video card system, where Stretch currently detects only the Intel adapter.
> Yesterday, was compaining about failing to find VDPAU libraries, so I installed, uninstalled drivers, to no avail.
> -- System Information:
> Debian Release: stretch/sid
>   APT prefers testing-updates
>   APT policy: (500, 'testing-updates'), (500, 'testing')
> Architecture: amd64 (x86_64)
> Foreign Architectures: i386
> Kernel: Linux 4.2.0-1-amd64 (SMP w/4 CPU cores)
> Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8) (ignored: LC_ALL set to en_US.UTF-8)
> Shell: /bin/sh linked to /bin/dash
> Init: systemd (via /run/systemd/system)
> Versions of packages vlc depends on:
> ii  fonts-freefont-ttf          20120503-4
> ii  libaa1                      1.4p5-44
> ii  libavcodec-ffmpeg56         7:2.8.1-1
> ii  libavutil-ffmpeg54          7:2.8.1-1
> ii  libc6                       2.19-22
> ii  libcaca0                    0.99.beta19-2
> ii  libcairo2                   1.14.2-2
> ii  libegl1-mesa [libegl1-x11]  10.6.8-1
> ii  libfreerdp-client1.1        1.1.0~git20140921.1.440916e+dfsg1-5
> ii  libfreerdp-core1.1          1.1.0~git20140921.1.440916e+dfsg1-5
> ii  libfreerdp-gdi1.1           1.1.0~git20140921.1.440916e+dfsg1-5
> ii  libfreetype6                2.6-2
> ii  libfribidi0                 0.19.7-1
> ii  libgcc1                     1:5.2.1-22
> ii  libgl1-mesa-glx [libgl1]    10.6.8-1
> ii  libgles1-mesa [libgles1]    10.6.8-1
> ii  libgles2-mesa [libgles2]    10.6.8-1
> ii  libglib2.0-0                2.46.1-1
> ii  libpulse0                   7.0-1
> ii  libqt5core5a                5.4.2+dfsg-9
> ii  libqt5gui5                  5.4.2+dfsg-9
> ii  libqt5widgets5              5.4.2+dfsg-9
> ii  libqt5x11extras5            5.5.1-2

This smells like #802811. Does the problem disappear if you downgrade
libqt5x11extras5 to the last 5.4.x version?

Sebastian Ramacher
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