Yes, it only seems to occur with Faust applications, standalone applications
like Guitarix for JACK or ALSA Modular Synth for ALSA run without issues.
I found out how to use "coredumpctl" and "gdb" to get some information of the core dump
files, but i don't know, how to interpret that (something about "Stack Trace " and hexa numbers in
it) - i copied the output into a file, which i attached to this email.
Thank you!
Joe
This is not enough to see anything useful. In GDB you can try the « bt »
(means backtrack) or even better « thread apply all bt » to see that state of
all threads. Can you try that and report the log?
Thanks.
Stéphane
I hope i did it like you meant it to: i used /coredumpctl gdb <PID>/ to
redirect the coredumpfile to gdb, after that in gdb ran the command
"/thread apply all bt/".
I stored the complete output into the attached file, the last few lines
are the output of "thread aplly all bt". Is this what you meant?
Thank you for your help!
Joe
toxonic@toxonic-Satellite-L500:~$ coredumpctl gdb 14582
PID: 14582 (t_stutter_stere)
UID: 1000 (toxonic)
GID: 1000 (toxonic)
Signal: 4 (ILL)
Timestamp: Mon 2019-12-09 11:52:56 CET (8min ago)
Command Line: /home/toxonic/Schreibtisch/t_stutter_stereo
Executable: /home/toxonic/Schreibtisch/t_stutter_stereo
Control Group:
/user.slice/user-1000.slice/user@1000.service/gnome-terminal-server.service
Unit: user@1000.service
User Unit: gnome-terminal-server.service
Slice: user-1000.slice
Owner UID: 1000 (toxonic)
Boot ID: 64783a8561124baf8e6123a076416f97
Machine ID: f3d85c83fd6e458aba76dbf56f683032
Hostname: toxonic-Satellite-L500
Storage:
/var/lib/systemd/coredump/core.t_stutter_stere.1000.64783a8561124baf8e6123a076416f97.14582.1575888776000000.lz4
Message: Process 14582 (t_stutter_stere) of user 1000 dumped core.
Stack trace of thread 14582:
#0 0x000000000040f8a5 n/a
(/home/toxonic/Schreibtisch/t_stutter_stereo)
GNU gdb (Ubuntu 8.1-0ubuntu3.2) 8.1.0.20180409-git
Copyright (C) 2018 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.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /home/toxonic/Schreibtisch/t_stutter_stereo...(no
debugging symbols found)...fertig.
Warnung: core file may not match specified executable file.
[New LWP 14582]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/home/toxonic/Schreibtisch/t_stutter_stereo'.
Program terminated with signal SIGILL, Illegal instruction.
#0 0x000000000040f8a5 in mydsp::buildUserInterface(UI*) ()
(gdb) thread apply all bt
Thread 1 (Thread 0x7fbad3e91780 (LWP 14582)):
#0 0x000000000040f8a5 in mydsp::buildUserInterface(UI*) ()
#1 0x00000000004218ce in MidiMeta::analyse(dsp*, bool&, int&) ()
#2 0x000000000040e6a4 in main ()
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