Recently, some (but not all) of the
<https://ci.libreoffice.org/job/lo_tb_master_linux/> and
<https://ci.libreoffice.org/job/lo_tb_master_linux_dbg/> builds started
to fail with SIGSEGV in instdir/program/python.bin as run during the
build. One example is
<https://ci.libreoffice.org/job/lo_tb_master_linux/43342/>
/bin/sh: line 1: 24274 Segmentation fault (core dumped) LD_LIBRARY_PATH=${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}"$I/program:$I/program" PYTHONHOME="$I/program/python-core-3.8.4" PYTHONPATH="${PYPATH:+$PYPATH:}$I/program/python-core-3.8.4/lib:$I/program/python-core-3.8.4/lib/lib-dynload" $I/program/python.bin $S/writerfilter/source/ooxml/factoryimpl_ns.py $W/CustomTarget/writerfilter/source/ooxml/model_preprocessed.xml $W/CustomTarget/writerfilter/source/ooxml/OOXMLFactory_wml.cxx > /home/tdf/lode/jenkins/workspace/lo_tb_master_linux/workdir/CustomTarget/writerfilter/source/ooxml/OOXMLFactory_wml.cxx
/home/tdf/lode/jenkins/workspace/lo_tb_master_linux/writerfilter/CustomTarget_source.mk:98: recipe for target '/home/tdf/lode/jenkins/workspace/lo_tb_master_linux/workdir/CustomTarget/writerfilter/source/ooxml/OOXMLFactory_wml.cxx' failed
make[1]: *** [/home/tdf/lode/jenkins/workspace/lo_tb_master_linux/workdir/CustomTarget/writerfilter/source/ooxml/OOXMLFactory_wml.cxx] Error 139
make[1]: *** Deleting file '/home/tdf/lode/jenkins/workspace/lo_tb_master_linux/workdir/CustomTarget/writerfilter/source/ooxml/OOXMLFactory_wml.cxx'
where I think I captured the right (but unfortunately unhelpful) core
file on tb75:
[tdf@lilith ~]$ cd lode/jenkins/workspace/lo_tb_master_linux
[tdf@lilith lo_tb_master_linux]$ ls -l core.24274
-rw-------. 1 tdf users 4.2M Dec 4 11:54 core.24274
[tdf@lilith lo_tb_master_linux]$ file core.24274
core.24274: ELF 64-bit LSB core file x86-64, version 1 (SYSV), SVR4-style, from '/home/tdf/lode/jenkins/workspace/lo_tb_master_linux/instdir/program/python.bin', real uid: 10037, effective uid: 10037, real gid: 100, effective gid: 100, execfn: '/home/tdf/lode/jenkins/workspace/lo_tb_master_linux/instdir/program/python.bin', platform: 'x86_64'
[tdf@lilith lo_tb_master_linux]$ gdb instdir/program/python.bin core.24274
GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-119.el7
Copyright (C) 2013 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-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/tdf/lode/jenkins/workspace/lo_tb_master_linux/instdir/program/python.bin...done.
[New LWP 24274]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `/home/tdf/lode/jenkins/workspace/lo_tb_master_linux/instdir/program/python.bin'.
Program terminated with signal 11, Segmentation fault.
#0 0x0000000000000ae0 in ?? ()
warning: File "/home/tdf/lode/jenkins/workspace/lo_tb_master_linux/instdir/program/python.bin-gdb.py" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load:/usr/bin/mono-gdb.py:/home/tdf/lode/jenkins/workspace/lo_gerrit/:/home/tdf/lode/opt_private/gcc-7.3.0/".
To enable execution of this file add
add-auto-load-safe-path /home/tdf/lode/jenkins/workspace/lo_tb_master_linux/instdir/program/python.bin-gdb.py
line to your configuration file "/home/tdf/.gdbinit".
To completely disable this security protection add
set auto-load safe-path /
line to your configuration file "/home/tdf/.gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual. E.g., run from the shell:
info "(gdb)Auto-loading safe path"
Missing separate debuginfos, use: debuginfo-install glibc-2.17-307.el7.1.x86_64
(gdb) t a a bt
Thread 1 (Thread 0x2af1d2787a40 (LWP 24274)):
#0 0x0000000000000ae0 in ?? ()
#1 0x00002af1d275307a in _dl_fini () from /lib64/ld-linux-x86-64.so.2
#2 0x00002af1d3aa8ce9 in __run_exit_handlers () from /lib64/libc.so.6
#3 0x00002af1d3aa8d37 in exit () from /lib64/libc.so.6
#4 0x00002af1d3a9155c in __libc_start_main () from /lib64/libc.so.6
#5 0x000000000040068e in _start ()
(gdb) q
[tdf@lilith lo_tb_master_linux]$
(Those Jenkins builds had started to fail apparently systematically with
such instdir/program/python.bin SIGSEGV, but which then appeared to stop
at least for the moment with admin_slave_cleaning, as discussed in the
comments starting at
<https://gerrit.libreoffice.org/c/core/+/106791/4#message-1702fc4900a2ca6db5720313481697dac1e9f37d>
"Enable Python Py_DEBUG setting when built with --enable-dbgutil on Linux".)
If anybody has an idea what's going wrong there...
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