[issue1590] DFBSD 2.5.x pkgsrc -current / VLC crashes after closing

Antonio Huete Jimenez <[e-mail]> added the comment:

Hi,

I've been playing around a bit with VLC (after compiling world, and all my
pkgsrc with debugging symbols).
The testing machine is a  VM so I access to it via ssh. I've installed all =
the
needed packages to be able to forward X to my local display.

So, I've run VLC in my local display and it does segfault after closing, ju=
st
like always. As I got a non-meaningful backtrace, I decided to run it from =
my
gdb. It segfaults again! It doesn't even show any window and this is the ba=
cktrace:

(gdb) bt
#0  0x28179c5c in _umtx_sleep_err ()
at/home/source/dfbsd/lib/libthread_xu/arch/i386/i386/_umtx_sleep_wakeup_err=
..S:12
#1  0x2817998c in _thr_umtx_wait (mtx=3D0x282f6adc, exp=3D0, timeout=3D0x0,=
 clockid=3D0)
   at /home/source/dfbsd/lib/libthread_xu/thread/thr_umtx.c:131
#2  0x281748c3 in cond_wait_common (cond=3D<value optimized out>,
mutex=3D0x282a7df0, abstime=3D0x0, cancel=3D1)
   at /home/source/dfbsd/lib/libthread_xu/thread/thr_cond.c:230
#3  0x28174a41 in __pthread_cond_wait (cond=3D0x282a7df4, mutex=3D0x282a7df=
0)
   at /home/source/dfbsd/lib/libthread_xu/thread/thr_cond.c:264
#4  0x2911dfd9 in QWaitConditionPrivate::wait (this=3D0x288ad6a0,
mutex=3D0x288ad69c, time=3D4294967295)
   at thread/qwaitcondition_unix.cpp:87
#5  QWaitCondition::wait (this=3D0x288ad6a0, mutex=3D0x288ad69c,time=3D4294=
967295) at
thread/qwaitcondition_unix.cpp:159
#6  0x2870a50e in Open (p_this=3D0x28321208) at qt4.cpp:307
#7  0x28126da2 in __module_need (p_this=3D0x28321208,psz_capability=3D0x281=
59a40
"interface", psz_name=3D0x282e3d70 "", b_strict=3Dtrue) at modules/modules.=
c:580
#8  0x280c7f27 in __intf_Create (p_this=3D0x282c00b0,psz_module=3D0x281512e=
0
"$intf") at interface/interface.c:104
#9  0x280b3085 in libvlc_InternalAddIntf (p_libvlc=3D0x282c00b0,psz_module=
=3D0x1d5
<Address 0x1d5 out of bounds>) at libvlc.c:1176
#10 0x2808b775 in libvlc_add_intf (p_i=3D0x28300080, name=3D0x0,p_e=3D0xbfb=
ff86c) at
control/core.c:188
#11 0x08048e57 in main (i_argc=3D1, ppsz_argv=3D0xbfbff8e0) at vlc.c:153

It seems it hits another segfault in initalization, but well, I still wante=
d to
find out the backtrace after a the crash while closing. So I
started VLC again and then attached with gdb. The issued 'cont' in gdb, wen=
t to
VLC window and closed it.
This time there's a weird error. See the backtrace:

Program received signal ?, Unknown signal.
0x281ea323 in lwp_kill () at lwp_kill.S:2
2       RSYSCALL(lwp_kill)
(gdb) bt
#0  0x281ea323 in lwp_kill () at lwp_kill.S:2
#1  0x28177b14 in _thr_send_sig (thread=3D0x28290af0, sig=3D32) at
/home/source/dfbsd/lib/libthread_xu/thread/thr_kern.c:99
#2  0x28176acf in _pthread_cancel (pthread=3D0x28290af0) at
/home/source/dfbsd/lib/libthread_xu/thread/thr_cancel.c:64
#3  0x2812cfeb in vlc_cancel (thread_id=3D0x28290af0) at misc/threads.c:941
#4  0x280ce07f in playlist_preparser_Delete (p_preparser=3D0x28306ea0)
at playlist/preparser.c:97
#5  0x280c8955 in playlist_Deactivate (p_playlist=3D0x283309c0) at
playlist/thread.c:101
#6  0x280b4a2f in libvlc_InternalCleanup (p_libvlc=3D0x282c00b0) at libvlc.=
c:1036
#7  0x2808b651 in libvlc_release (p_instance=3D0x28300080) at control/core.=
c:179
#8  0x08048e8b in main (i_argc=3D1, ppsz_argv=3D0xbfbffb98) at vlc.c:156

I hope this throws a bit more light into this.

Cheers,
Antonio Huete

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status: unread -> chatting

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