Re: [FFmpeg-trac] #7252(undetermined:closed): SIGSEGV when the ffplay is terminated with Ctrl+C before video appears
#7252: SIGSEGV when the ffplay is terminated with Ctrl+C before video appears
-+-
Reporter: KTSamy |Owner:
Type: defect | Status: closed
Priority: important|Component:
Version: git-master | undetermined
Keywords: SIGSEGV | Resolution:
crash | needs_more_info
Blocking: | Blocked By:
Analyzed by developer: 0| Reproduced by developer: 0
-+-
Comment (by KTSamy):
Replying to [comment:6 cehoyos]:
> Feel free to test the following change:
> {{{
> diff --git a/fftools/ffplay.c b/fftools/ffplay.c
> index 84ba667..5ace5cd 100644
> --- a/fftools/ffplay.c
> +++ b/fftools/ffplay.c
> @@ -3106,7 +3106,11 @@ static void stream_cycle_channel(VideoState *is,
int codec_type)
> int old_index;
> AVStream *st;
> AVProgram *p = NULL;
> -int nb_streams = is->ic->nb_streams;
> +int nb_streams;
> +
> +if (!is->ic)
> +return;
> +nb_streams = is->ic->nb_streams;
>
> if (codec_type == AVMEDIA_TYPE_VIDEO) {
> start_index = is->last_video_stream;
> }}}
This fixes the issue. Thanks :)
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Re: [FFmpeg-trac] #7252(undetermined:closed): SIGSEGV when the ffplay is terminated with Ctrl+C before video appears
#7252: SIGSEGV when the ffplay is terminated with Ctrl+C before video appears
-+-
Reporter: KTSamy |Owner:
Type: defect | Status: closed
Priority: important|Component:
Version: git-master | undetermined
Keywords: SIGSEGV | Resolution:
crash | needs_more_info
Blocking: | Blocked By:
Analyzed by developer: 0| Reproduced by developer: 0
-+-
Comment (by cehoyos):
Feel free to test the following change:
{{{
diff --git a/fftools/ffplay.c b/fftools/ffplay.c
index 84ba667..5ace5cd 100644
--- a/fftools/ffplay.c
+++ b/fftools/ffplay.c
@@ -3106,7 +3106,11 @@ static void stream_cycle_channel(VideoState *is,
int codec_type)
int old_index;
AVStream *st;
AVProgram *p = NULL;
-int nb_streams = is->ic->nb_streams;
+int nb_streams;
+
+if (!is->ic)
+return;
+nb_streams = is->ic->nb_streams;
if (codec_type == AVMEDIA_TYPE_VIDEO) {
start_index = is->last_video_stream;
}}}
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Re: [FFmpeg-trac] #7252(undetermined:closed): SIGSEGV when the ffplay is terminated with Ctrl+C before video appears
#7252: SIGSEGV when the ffplay is terminated with Ctrl+C before video appears
-+-
Reporter: KTSamy |Owner:
Type: defect | Status: closed
Priority: important|Component:
Version: git-master | undetermined
Keywords: SIGSEGV | Resolution:
crash | needs_more_info
Blocking: | Blocked By:
Analyzed by developer: 0| Reproduced by developer: 0
-+-
Comment (by cehoyos):
Replying to [comment:4 KTSamy]:
> Replying to [comment:3 cehoyos]:
> > Replying to [comment:2 KTSamy]:
> > > {{{
> > > ktsamy:~ thiru$ ffplay_g
"https://bitdash-a.akamaihd.net/content/sintel/hls/playlist.m3u8";
> > > ffplay version 3.4.git Copyright (c) 2003-2018 the FFmpeg developers
> > > }}}
> > Looks old and unsupported.
>
> Nope. This was built from the recent master branch
In this case, you are using a broken source snapshot, try
http://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2
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Re: [FFmpeg-trac] #7252(undetermined:closed): SIGSEGV when the ffplay is terminated with Ctrl+C before video appears
#7252: SIGSEGV when the ffplay is terminated with Ctrl+C before video appears
-+-
Reporter: KTSamy |Owner:
Type: defect | Status: closed
Priority: important|Component:
Version: git-master | undetermined
Keywords: SIGSEGV | Resolution:
crash | needs_more_info
Blocking: | Blocked By:
Analyzed by developer: 0| Reproduced by developer: 0
-+-
Comment (by KTSamy):
Replying to [comment:3 cehoyos]:
> Replying to [comment:2 KTSamy]:
> > {{{
> > ktsamy:~ thiru$ ffplay_g
"https://bitdash-a.akamaihd.net/content/sintel/hls/playlist.m3u8";
> > ffplay version 3.4.git Copyright (c) 2003-2018 the FFmpeg developers
> > }}}
> Looks old and unsupported.
Nope. This was built from the yesterday's latest master branch (Last
commit is 7b80df677aa85c7d5cba457de915eac6108ec4e8 ). The RELEASE file of
the master branch is not updated after the release of 4.0. That is leading
to the confusion. I have already raised this on dev IRC sometime back.
'''As I mentioned earlier, I can reproduce it from the builds of
officially recommended builds too (https://evermeet.cx/ffmpeg/ &
https://ffmpeg.zeranoe.com/builds/ ). It looks like an issue with newer
MacOS versions. I can even reproduce the issue with 3.4.X & 4.0 builds.'''
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Re: [FFmpeg-trac] #7252(undetermined:closed): SIGSEGV when the ffplay is terminated with Ctrl+C before video appears
#7252: SIGSEGV when the ffplay is terminated with Ctrl+C before video appears
-+-
Reporter: KTSamy |Owner:
Type: defect | Status: closed
Priority: important|Component:
Version: git-master | undetermined
Keywords: SIGSEGV | Resolution:
crash | needs_more_info
Blocking: | Blocked By:
Analyzed by developer: 0| Reproduced by developer: 0
-+-
Comment (by cehoyos):
Replying to [comment:2 KTSamy]:
> {{{
> ktsamy:~ thiru$ ffplay_g
"https://bitdash-a.akamaihd.net/content/sintel/hls/playlist.m3u8";
> ffplay version 3.4.git Copyright (c) 2003-2018 the FFmpeg developers
> }}}
Looks old and unsupported.
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Re: [FFmpeg-trac] #7252(undetermined:closed): SIGSEGV when the ffplay is terminated with Ctrl+C before video appears
#7252: SIGSEGV when the ffplay is terminated with Ctrl+C before video appears
-+-
Reporter: KTSamy |Owner:
Type: defect | Status: closed
Priority: important|Component:
Version: git-master | undetermined
Keywords: SIGSEGV | Resolution:
crash | needs_more_info
Blocking: | Blocked By:
Analyzed by developer: 0| Reproduced by developer: 0
-+-
Comment (by KTSamy):
I am not much familiar with debugging tools. I have tried
{{{
sudo gdb ffplay_g
r -i https://bitdash-a.akamaihd.net/content/sintel/hls/playlist.m3u8
}}}
the result was
{{{
(gdb) r -i https://bitdash-a.akamaihd.net/content/sintel/hls/playlist.m3u8
Starting program: /usr/local/bin/ffplay_g -i
https://bitdash-a.akamaihd.net/content/sintel/hls/playlist.m3u8
[New Thread 0x1103 of process 68309]
[New Thread 0xf03 of process 68309]
Warning:
Cannot insert breakpoint -1.
Cannot access memory at address 0xf782
Command aborted.
}}}
I am not sure whether you have tried it on macOS or not. I am on Mac OS X
10.13.5 (17F77)
Here is my terminal output
{{{
ktsamy:~ thiru$ ffplay_g
"https://bitdash-a.akamaihd.net/content/sintel/hls/playlist.m3u8";
ffplay version 3.4.git Copyright (c) 2003-2018 the FFmpeg developers
built with Apple LLVM version 9.0.0 (clang-900.0.39.2)
configuration: --enable-static --disable-shared --disable-doc --enable-
gpl --enable-version3 --enable-nonfree --enable-pthreads --pkg-config-
flags=--static --enable-libxml2 --enable-gmp --enable-gnutls --enable-sdl2
libavutil 56. 18.102 / 56. 18.102
libavcodec 58. 20.100 / 58. 20.100
libavformat58. 17.100 / 58. 17.100
libavdevice58. 4.100 / 58. 4.100
libavfilter 7. 25.100 / 7. 25.100
libswscale 5. 2.100 / 5. 2.100
libswresample 3. 2.100 / 3. 2.100
libpostproc55. 2.100 / 55. 2.100
[hls,applehttp @ 0x1028a2000] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/audio/stereo/en/128kbit.m3u8'
for reading
Segmentation fault: 11= 0 aq=0KB vq=0KB sq=0B f=0/0
ktsamy:~ thiru$ ffplay_g
"https://bitdash-a.akamaihd.net/content/sintel/hls/playlist.m3u8";
ffplay version 3.4.git Copyright (c) 2003-2018 the FFmpeg developers
built with Apple LLVM version 9.0.0 (clang-900.0.39.2)
configuration: --enable-static --disable-shared --disable-doc --enable-
gpl --enable-version3 --enable-nonfree --enable-pthreads --pkg-config-
flags=--static --enable-libxml2 --enable-gmp --enable-gnutls --enable-sdl2
libavutil 56. 18.102 / 56. 18.102
libavcodec 58. 20.100 / 58. 20.100
libavformat58. 17.100 / 58. 17.100
libavdevice58. 4.100 / 58. 4.100
libavfilter 7. 25.100 / 7. 25.100
libswscale 5. 2.100 / 5. 2.100
libswresample 3. 2.100 / 3. 2.100
libpostproc55. 2.100 / 55. 2.100
[hls,applehttp @ 0x10306a800] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/audio/stereo/en/128kbit.m3u8'
for reading
[https @ 0x1038f7200] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/audio/stereo/none/128kbit.m3u8'
for reading
[https @ 0x1038f7200] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/audio/surround/en/320kbit.m3u8'
for reading
[https @ 0x1038f7200] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/audio/stereo/none/128kbit.m3u8'
for reading
[https @ 0x1038f7200] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/video/250kbit.m3u8' for
reading
[https @ 0x1038f7200] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/video/500kbit.m3u8' for
reading
[https @ 0x1038f7200] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/video/800kbit.m3u8' for
reading
[https @ 0x1038f7200] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/video/1100kbit.m3u8'
for reading
[https @ 0x1038f7200] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/video/1500kbit.m3u8'
for reading
[https @ 0x1038f7200] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/video/4000kbit.m3u8'
for reading
Segmentation fault: 11= 0 aq=0KB vq=0KB sq=0B f=0/0
ktsamy:~ thiru$
}}}
I can even reproduce it with latest builds from
https://ffmpeg.zeranoe.com/builds/
The following are the context from mac's bug reporting option context
{{{
Process: ffplay_g [68095]
Path: /usr/local/bin/ffplay_g
Identifier:ffplay_g
Version: 0
Code Type: X86-64 (Native)
Parent Process:bash [33400]
Responsible: ffplay_g [68095]
User ID: 503
Date/Time: 2
Re: [FFmpeg-trac] #7252(undetermined:closed): SIGSEGV when the ffplay is terminated with Ctrl+C before video appears
#7252: SIGSEGV when the ffplay is terminated with Ctrl+C before video appears
-+-
Reporter: KTSamy |Owner:
Type: defect | Status: closed
Priority: important|Component:
Version: git-master | undetermined
Keywords: SIGSEGV | Resolution:
crash | needs_more_info
Blocking: | Blocked By:
Analyzed by developer: 0| Reproduced by developer: 0
-+-
Changes (by cehoyos):
* keywords: SIGSEGV ffplay => SIGSEGV crash
* priority: normal => important
* status: new => closed
* component: ffplay => undetermined
* resolution: => needs_more_info
Comment:
Please reopen this ticket if you can provide backtrace, disassembly and
register dump as explained on https://ffmpeg.org/bugreports.html
{{{
$ ffplay https://bitdash-a.akamaihd.net/content/sintel/hls/playlist.m3u8
ffplay version N-91255-g7b80df6 Copyright (c) 2003-2018 the FFmpeg
developers
built with gcc 6.4.0 (GCC)
configuration: --enable-gpl --enable-gnutls
libavutil 56. 18.102 / 56. 18.102
libavcodec 58. 20.100 / 58. 20.100
libavformat58. 17.100 / 58. 17.100
libavdevice58. 4.100 / 58. 4.100
libavfilter 7. 25.100 / 7. 25.100
libswscale 5. 2.100 / 5. 2.100
libswresample 3. 2.100 / 3. 2.100
libpostproc55. 2.100 / 55. 2.100
[hls,applehttp @ 0x7fd8c940] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/audio/stereo/en/128kbit.m3u8'
for reading
[https @ 0x7fd8c0015dc0] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/audio/stereo/none/128kbit.m3u8'
for reading
[https @ 0x7fd8c0015dc0] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/audio/surround/en/320kbit.m3u8'
for reading
[https @ 0x7fd8c0015dc0] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/audio/stereo/none/128kbit.m3u8'
for reading
[https @ 0x7fd8c0015dc0] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/video/250kbit.m3u8' for
reading
[https @ 0x7fd8c0015dc0] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/video/500kbit.m3u8' for
reading
^C
$
}}}
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