[Cin] Simplest demo of BT 638 crash

Andrew Randrianasulu randrianasulu at gmail.com
Wed Apr 26 13:17:27 CEST 2023


I tried to set allocation to 2x more (because plugin suddently get 2x
bigger buffer on speed change), but not sure if  this even sounds
right?

May be better idea is to store this PluginClient::in_buffer_size in
plugin-local variable, and compare it to current value, and
reconfigure if needed ...

On Wed, Apr 26, 2023 at 9:26 AM Andrew Randrianasulu
<randrianasulu at gmail.com> wrote:
>
> Phyllis, can you check HV's version of delayaudio plugin functions?
>
> https://github.com/heroineworshiper/hvirtual/blob/457c27f1786a83d43ad205478e4389f760c4fdf9/plugins/delayaudio/delayaudio.C
>
> they slightly different, esp. in memcpy parts.
> I'll try to test this idea myself, sometime this day.
>
>
> пт, 21 апр. 2023 г., 19:03 Andrew Randrianasulu <randrianasulu at gmail.com>:
>>
>> so far I get this Backtrace:
>>
>> Thread 88 "cin" received signal SIGSEGV, Segmentation fault.
>> [Switching to Thread 0xc4612b00 (LWP 16879)]
>> 0xf4e0f37d in DelayAudio::process_realtime(long long, Samples*,
>> Samples*) () from /usr/lib/cin/plugins/audio/delayaudio.plugin
>> (gdb) bt full
>> #0  0xf4e0f37d in DelayAudio::process_realtime(long long, Samples*, Samples*)
>>     () from /usr/lib/cin/plugins/audio/delayaudio.plugin
>> No symbol table info available.
>> #1  0x08709468 in PluginAClient::process_buffer(long long, Samples*,
>> long long, int) ()
>> No symbol table info available.
>> #2  0x08729ea5 in PluginServer::process_buffer(Samples**, long long,
>> long long, long long, long long, int) ()
>> No symbol table info available.
>> #3  0x084d393b in AAttachmentPoint::render(Samples*, int, long long,
>> long long, long long) ()
>> No symbol table info available.
>> #4  0x087efb03 in VirtualANode::render_as_module(Samples**, Samples*,
>> long long, long long, long long) ()
>> No symbol table info available.
>> #5  0x087efbaa in VirtualANode::render(Samples*, long long, long long,
>> long long) ()
>> No symbol table info available.
>> #6  0x087ede33 in VirtualAConsole::process_buffer(long long, long long) ()
>> No symbol table info available.
>> #7  0x08504f84 in ARender::run() ()
>> No symbol table info available.
>> #8  0x088f4881 in Thread::entrypoint(void*) ()
>> --Type <RET> for more, q to quit, c to continue without paging--
>> No symbol table info available.
>> #9  0xf7e42328 in start_thread () from /lib/libpthread.so.0
>> No symbol table info available.
>> #10 0xf6204f06 in clone () from /lib/libc.so.6
>> No symbol table info available.
>>
>> On Fri, Apr 21, 2023 at 5:08 AM Andrew Randrianasulu
>> <randrianasulu at gmail.com> wrote:
>> >
>> > Thanks a lot, I am sorry I spend most of time watching all 7 episodes of Extrapolations (tv series)  instead of doing anything at computer.
>> >
>> > So, it basically in "delay audio" plugin, this find narrows it quite a lot!
>> >
>> > пт, 21 апр. 2023 г., 04:04 Phyllis Smith <phylsmith2017 at gmail.com>:
>> >>
>> >> Simplest demo to create "Delay Audio" plugin problem. I tested this with 4 random audio files or video files that included audio files and all crashed under this set of steps. So you can demo with any file but 1 small example audio file is attached.
>> >>
>> >> 1) load/replace file (or load to resources and then drag onto timeline)
>> >> 2) drag the "Delay Audio" plugin to the audio track
>> >> 3) start playing file from the beginning (or start anywhere)
>> >> 4) without stopping first, use the "fast forward" icon in the main window to speed up the playing - CRASH
>> >>
>> >> ALTERNATIVE to "Delay Audio" is "F_adelay" which did not crash for me - set "delays" parameter to desired seconds and use "Apply".
>> >> Next I will use the debugger to learn some more.
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