[Linphone-users] BUG in using USB camera. Core file at startup

[georgi stefanov]

Hi All,

I have found a bug in linphone.
I can easy reproduce it using the following steps:

0.attach usb camera
1.start linphone
2.enable video
3.enable self view
4.quit linphone
5.detach the usb camera
6.start linphone

After step 6 I have core file
gdb linphone core
GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
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For help, type "help".
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Reading symbols from linphone...(no debugging symbols found)...done.
[New LWP 10317]
[New LWP 10322]
[New LWP 10318]
[New LWP 10321]
[New LWP 10323]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/i686/cmov/libthread_db.so.1".
Core was generated by `linphone'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  __GI___libc_free (mem=0x8) at malloc.c:2929
2929    malloc.c: No such file or directory.
(gdb) bt
#0  __GI___libc_free (mem=0x8) at malloc.c:2929
#1  0xb6308ad2 in av_free (ptr=<optimized out>) at /build/libav-uuYIjZ/libav-11.3/libavutil/mem.c:194
#2  av_freep (address@hidden) at /build/libav-uuYIjZ/libav-11.3/libavutil/mem.c:201
#3  0xb6303127 in av_frame_unref (address@hidden) at /build/libav-uuYIjZ/libav-11.3/libavutil/frame.c:290
#4  0xb678d7ac in avcodec_decode_video2 (avctx=0xbff47850, picture=0xbff477dc, got_picture_ptr=0xbff477d8,
    avpkt=0xbff47808) at /build/libav-uuYIjZ/libav-11.3/libavcodec/utils.c:1593
#5  0xb75e88f2 in ?? () from /usr/lib/i386-linux-gnu/libmediastreamer_voip.so.3
#6  0xb75e8e80 in ms_load_jpeg_as_yuv () from /usr/lib/i386-linux-gnu/libmediastreamer_voip.so.3
#7  0xb75e8f84 in static_image_preprocess () from /usr/lib/i386-linux-gnu/libmediastreamer_voip.so.3
#8  0xb75a0a94 in ms_filter_preprocess () from /usr/lib/i386-linux-gnu/libmediastreamer_base.so.3
#9  0xb75a1f34 in ms_ticker_attach_multiple () from /usr/lib/i386-linux-gnu/libmediastreamer_base.so.3
#10 0xb75a1fde in ms_ticker_attach () from /usr/lib/i386-linux-gnu/libmediastreamer_base.so.3
#11 0xb75eae0b in video_preview_start () from /usr/lib/i386-linux-gnu/libmediastreamer_voip.so.3
#12 0xb7678561 in ?? () from /usr/lib/i386-linux-gnu/liblinphone.so.5
#13 0xb767f04d in linphone_core_iterate () from /usr/lib/i386-linux-gnu/liblinphone.so.5
#14 0x0805abe3 in ?? ()
#15 0xb522ba21 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#16 0xb522ae03 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#17 0xb522b219 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#18 0xb522b5c9 in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#19 0xb5a1c1b5 in gtk_main () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#20 0x08058a12 in main ()
(gdb) quit


I am using:
lsb_release -a
LSB Version:    core-2.0-ia32:core-2.0-noarch:core-3.0-ia32:core-3.0-noarch:core-3.1-ia32:core-3.1-noarch:core-3.2-ia32:core-3.2-noarch:core-4.0-ia32:core-4.0-noarch:core-4.1-ia32:core-4.1-noarch:security-4.0-ia32:security-4.0-noarch:security-4.1-ia32:security-4.1-noarch
Distributor ID: Debian
Description:    Debian GNU/Linux testing (stretch)
Release:        testing
Codename:       stretch

I hope I have been usefull to you
Georgi

--
Georgi Stefanov
R&D Engineer
Tel: +35989 2299057
address@hidden
Skype: georgi.rosenov
Location: Sofia, Bulgaria