[gstreamer-bugs] [Bug 346663] New: Segmentation error with fakesrc, fakesink and a filter

[GStreamer (bugzilla.gnome.org)]

Do not reply to this via email (we are currently unable to handle email
responses and they get discarded).  You can add comments to this bug at
http://bugzilla.gnome.org/show_bug.cgi?id=346663
 GStreamer | gstreamer (core) | Ver: 0.10.x

           Summary: Segmentation error with fakesrc, fakesink and a filter
           Product: GStreamer
           Version: 0.10.x
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: critical
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: pkj at axis.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


Steps to reproduce:
I get a segmentation error when I run the following command:

gst-launch fakesrc ! 'video/x-raw-yuv,format=(fourcc)YUY2,width=176,height=144'
! ffmpegcolorspace ! fakesink

It seems to be caused by gst_base_transform_prepare_output_buffer() being
called with an in_buf with size 0 and out_size being 0, which causes a call to
gst_buffer_create_sub() with size being 0, which in turn causes it to return
NULL, which isn't handled...


Stack trace:
#0  gst_caps_replace (caps=0x28, newcaps=0x0)
    at ../../../gstreamer/gst/gstcaps.c:1581
#1  0x356da5fc in gst_base_transform_prepare_output_buffer (trans=0xad0b0, 
    in_buf=0xafa90, out_size=0, out_caps=0x0, out_buf=0x9f7ffc9c)
    at ../../../../../gstreamer/libs/gst/base/gstbasetransform.c:902
#2  0x356dad7e in gst_base_transform_handle_buffer (trans=0xad0b0, 
    inbuf=0xafa90, outbuf=0x9f7ffc9c)
    at ../../../../../gstreamer/libs/gst/base/gstbasetransform.c:1337
#3  0x356db0a4 in gst_base_transform_chain (pad=0x28, buffer=0xafa90)
    at ../../../../../gstreamer/libs/gst/base/gstbasetransform.c:1457
#4  0x3558d04c in gst_pad_chain (pad=0xa7b18, buffer=0xafa90)
    at ../../../gstreamer/gst/gstpad.c:3232
#5  0x3558d3a8 in gst_pad_push (pad=0xa7818, buffer=0xafa90)
    at ../../../gstreamer/gst/gstpad.c:3348
#6  0x356d92fc in gst_base_src_loop (pad=0xa7818)
    at ../../../../../gstreamer/libs/gst/base/gstbasesrc.c:1497
#7  0x3559a86a in gst_task_func (task=0xae408, tclass=0x0)
    at ../../../gstreamer/gst/gsttask.c:193
#8  0x3563a0f0 in g_thread_pool_thread_proxy (data=0x28)
    at ../../../glib/glib/gthreadpool.c:265
#9  0x356395d6 in g_thread_create_proxy (data=0x28)
    at ../../../glib/glib/gthread.c:582
#10 0x355f5c22 in pthread_start_thread (arg=0x28)
    at libpthread/linuxthreads.old/manager.c:311
#11 0x355f5c66 in pthread_start_thread_event (arg=0x9f7ffe20)
    at libpthread/linuxthreads.old/manager.c:335
#12 0x35698980 in clone () at libc/sysdeps/linux/cris/clone.S:77


Other information:
The trace above was attained on an embedded box running on the CRIS
architecture and using uClibc. However, the same segmentation error occurs with
ix86 and glibc.


-- 
Configure bugmail: http://bugzilla.gnome.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the QA contact for the bug.
You are the assignee for the bug.