[Bug 792536] New: Immediate SegFault of gst-validate with a certain given (ok, broken) pipeline
GStreamer (GNOME Bugzilla)
bugzilla at gnome.org
Mon Jan 15 16:12:05 UTC 2018
https://bugzilla.gnome.org/show_bug.cgi?id=792536
Bug ID: 792536
Summary: Immediate SegFault of gst-validate with a certain
given (ok, broken) pipeline
Classification: Platform
Product: GStreamer
Version: 1.12.x
OS: Linux
Status: NEW
Severity: normal
Priority: Normal
Component: gst-plugins-good
Assignee: gstreamer-bugs at lists.freedesktop.org
Reporter: meinemailingliste2 at online.de
QA Contact: gstreamer-bugs at lists.freedesktop.org
GNOME version: ---
Example with qtdemux:
(I know splitmuxsrc already contains the demuxer...)
# gst-validate-1.0 --set-scenario only-header-file splitmuxsrc
location=big_buck_bunny_1080p_h264.mov ! qtdemux ! fakesink
=========================================
Running scenario only-header-file on pipeline pipeline0
=========================================
Starting pipeline
Pipeline started
Executing stop:
Segmentation fault
# cat only-header-file
description, duration=65.0, min-media-duration=65.0
Example with qtmux:
(I know splitmuxsrc already contains the demuxer...)
# gst-launch-1.0 --version
Invalid byte sequence in conversion input Invalid byte sequence in conversion
input
gst-launch-1.0 version 1.12.4
GStreamer 1.12.4
Unknown package origin
# uname -a
Linux buildroot 4.15.0-rc6-20180102-1 #2 SMP PREEMPT Wed Jan 10 18:50:37 CET
2018 armv7l GNU/Linux # gst-validate-1.0 --set-scenario only-header-file
splitmuxsrc location=big_buck _bunny_1080p_h264.mov ! qtmux ! fakesink
# gdb --args gst-validate-1.0 --set-scenario only-header-file splitmuxsrc
locati on=big_buck_bunny_1080p_h264.mov ! qtdemux ! fakesink GNU gdb (GDB)
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Reading symbols from gst-validate-1.0...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/gst-validate-1.0 --set-scenario only-header-file
splitmuxsrc location=big_buck_bunny_1080p_h264.mov \! qtdemux \! fakesink
[Thread debugging using libthread_db enabled] Using host libthread_db library
"/lib/libthread_db.so.1".
[New Thread 0x75e4f420 (LWP 764)]
=========================================
Running scenario only-header-file on pipeline pipeline0
=========================================
Starting pipeline
[New Thread 0x754ff420 (LWP 765)]
[New Thread 0x74aff420 (LWP 766)]
[New Thread 0x74153420 (LWP 767)]
[New Thread 0x737ff420 (LWP 768)]
Pipeline started
Executing stop:
Thread 6 "splitmuxsrc0:vi" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x737ff420 (LWP 768)]
0x76d1b8d0 in ?? () from /usr/lib/libgstvalidate-1.0.so.0
(gdb) bt
#0 0x76d1b8d0 in ?? () from /usr/lib/libgstvalidate-1.0.so.0 Cannot access
memory at address 0x4eeb8
(gdb)
With filesrc no error occurs…
$ gdb /home/xxx/Work/gstreamer/install-1.12.1/bin/gst-validate-1.0
(gdb) run --set-scenario secnario-001 splitmuxsrc
location=/home/xxx/Videos/big_buck_bunny_1080p_h264.mov ! qtdemux ! fakesink
=========================================
Running scenario secnario-001 on pipeline pipeline0
=========================================
Starting pipeline
[New Thread 0x7ffff3302700 (LWP 2122)]
[New Thread 0x7ffff28e9700 (LWP 2123)]
[New Thread 0x7ffff1f9d700 (LWP 2124)]
[New Thread 0x7ffff179c700 (LWP 2125)]
Pipeline started
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff1f9d700 (LWP 2124)] _check_pad_query_failures
(pad=pad at entry=0x7fffe806a030,
last_query_caps_fail_monitor=last_query_caps_fail_monitor at entry=0x7ffff1f9c360,
last_refused_caps_monitor=last_refused_caps_monitor at entry=0x7ffff1f9c368,
str=0x7fffe40053a0) at gst-validate-pipeline-monitor.c:151
151 if (monitor->last_query_res && gst_caps_is_empty
(monitor->last_query_res)) {
Missing separate debuginfos, use: zypper install
libz1-debuginfo-1.2.8-5.8.1.x86_64
(gdb) where
#0 _check_pad_query_failures (pad=pad at entry=0x7fffe806a030,
last_query_caps_fail_monitor=last_query_caps_fail_monitor at entry=0x7ffff1f9c360,
last_refused_caps_monitor=last_refused_caps_monitor at entry=0x7ffff1f9c368,
str=0x7fffe40053a0) at gst-validate-pipeline-monitor.c:151
#1 0x00007ffff78080d0 in _gather_pad_negotiation_details (pad=0x7fffe806a030,
str=str at entry=0x7fffe40053a0,
last_query_caps_fail_monitor=last_query_caps_fail_monitor at entry=0x7ffff1f9c360,
last_refused_caps_monitor=last_refused_caps_monitor at entry=0x7ffff1f9c368)
at gst-validate-pipeline-monitor.c:203
#2 0x00007ffff78087a9 in _generate_not_negotiated_error_report (
msg=<optimized out>) at gst-validate-pipeline-monitor.c:431
#3 _bus_handler (bus=<optimized out>, message=<optimized out>,
monitor=0x743000) at gst-validate-pipeline-monitor.c:473
#4 0x00007ffff60771dc in ffi_call_unix64 ()
from /home/xxx/Work/gstreamer/install-1.12.1/lib64/libffi.so.6
#5 0x00007ffff60762d5 in ffi_call ()
from /home/xxx/Work/gstreamer/install-1.12.1/lib64/libffi.so.6
#6 0x00007ffff6b6632d in g_cclosure_marshal_generic (
closure=closure at entry=0x744400, return_gvalue=return_gvalue at entry=0x0,
n_param_values=n_param_values at entry=2,
param_values=param_values at entry=0x7ffff1f9c7e0,
invocation_hint=invocation_hint at entry=0x7ffff1f9c780,
marshal_data=marshal_data at entry=0x0) at gclosure.c:1490 ---Type <return> to
continue, or q <return> to quit---
#7 0x00007ffff6b65a92 in g_closure_invoke (closure=0x744400,
return_value=return_value at entry=0x0, n_param_values=2,
param_values=param_values at entry=0x7ffff1f9c7e0,
invocation_hint=invocation_hint at entry=0x7ffff1f9c780) at gclosure.c:804
#8 0x00007ffff6b77edd in signal_emit_unlocked_R (node=node at entry=0x624b60,
detail=detail at entry=277, instance=instance at entry=0x67a3b0,
emission_return=emission_return at entry=0x0,
instance_and_params=instance_and_params at entry=0x7ffff1f9c7e0)
at gsignal.c:3635
#9 0x00007ffff6b80161 in g_signal_emit_valist (instance=<optimized out>,
signal_id=<optimized out>, detail=<optimized out>,
var_args=var_args at entry=0x7ffff1f9c968) at gsignal.c:3391
#10 0x00007ffff6b803d2 in g_signal_emit (instance=instance at entry=0x67a3b0,
signal_id=<optimized out>, detail=<optimized out>) at gsignal.c:3447
#11 0x00007ffff6dee80a in gst_bus_sync_signal_handler (bus=0x67a3b0,
message=0x7fffdc002710, data=<optimized out>) at gstbus.c:1249
#12 0x00007ffff6deead7 in gst_bus_post (bus=bus at entry=0x67a3b0,
message=message at entry=0x7fffdc002710) at gstbus.c:342
#13 0x00007ffff6e03878 in gst_element_post_message_default (
element=element at entry=0x740070, message=0x7fffdc002710)
at gstelement.c:1783
#14 0x00007ffff6de0c3f in gst_bin_post_message (element=0x740070,
msg=0x7fffdc002710) at gstbin.c:2789 ---Type <return> to continue, or q
<return> to quit---
#15 0x00007ffff6e06583 in gst_element_post_message (
element=element at entry=0x740070, message=message at entry=0x7fffdc002710)
at gstelement.c:1826
#16 0x00007ffff6de0f8e in gst_bin_handle_message_func (bin=0x740070,
message=0x7fffdc002710) at gstbin.c:4040
#17 0x00007ffff6e2b35c in gst_pipeline_handle_message (bin=0x740070,
message=0x7fffdc002710) at gstpipeline.c:600
#18 0x00007ffff6dde838 in bin_bus_handler (bus=bus at entry=0x67a2e0,
message=message at entry=0x7fffdc002710, bin=bin at entry=0x740070)
at gstbin.c:3260
#19 0x00007ffff6deeab3 in gst_bus_post (bus=bus at entry=0x67a2e0,
message=message at entry=0x7fffdc002710) at gstbus.c:336
#20 0x00007ffff6e03878 in gst_element_post_message_default (
element=element at entry=0x7260f0, message=0x7fffdc002710)
at gstelement.c:1783
#21 0x00007ffff6de0c3f in gst_bin_post_message (element=0x7260f0,
msg=0x7fffdc002710) at gstbin.c:2789
#22 0x00007ffff6e06583 in gst_element_post_message (
element=element at entry=0x7260f0, message=0x7fffdc002710)
at gstelement.c:1826
#23 0x00007ffff6e06bce in gst_element_message_full_with_details (
element=0x7260f0, type=GST_MESSAGE_ERROR, domain=1875, code=1,
text=<optimized out>, debug=<optimized out>, ---Type <return> to continue,
or q <return> to quit---
file=0x7ffff441f954 "gstsplitmuxsrc.c",
function=0x7ffff44200a0 <__func__.19837> "gst_splitmux_pad_loop",
line=556, structure=0x7fffe4005420) at gstelement.c:1962
#24 0x00007ffff44192d0 in gst_splitmux_pad_loop (pad=<optimized out>)
at gstsplitmuxsrc.c:556
#25 0x00007ffff6e51df9 in gst_task_func (task=0x7384d0) at gsttask.c:335
#26 0x00007ffff68b396c in g_thread_pool_thread_proxy (data=<optimized out>)
at gthreadpool.c:307
#27 0x00007ffff68b2fe5 in g_thread_proxy (data=0x750450) at gthread.c:784
#28 0x00007ffff662c0a4 in start_thread () from /lib64/libpthread.so.0
#29 0x00007ffff63616ed in clone () from /lib64/libc.so.6
(gdb)
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