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Today's Topics:
1. Netdisco2 Perl Segfaults After OS Upgrade (Mitch Todd)
2. Re: Netdisco2 Perl Segfaults After OS Upgrade (Caines, Max)
--- Begin Message ---
I've updated a Ubuntu box running Netdisco2, and any attempt to run
netdisco-web, netdisco-daemon, etc all fail on a segmentation fault. In
fact, anything perl that I try to run as netdisco will result in a
segfault, including cpan. This happens if and only f I run them as
netdisco; other users have no issues with perl. Obviously, this is a perl
issue local to the netdisco account and not a problem with Netdisco itself,
but I was wondering if anyone has run into an issue like this before, and
the most efficient way to fix the problem. This is what I see when the
netdisco user tries to run netdisco-web, netdisco-daemon, and cpan with
debug turned on:
netdisco@thismachine:~$ perl -d ~/bin/netdisco-web start
Loading DB routines from perl5db.pl version 1.51
Editor support available.
Enter h or 'h h' for help, or 'man perldebug' for more help.
Signal SEGV at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 23.
require List/Util.pm called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/Scalar/Util.pm
line 23
require Scalar/Util.pm called at /usr/share/perl/5.26/File/Temp.pm
line 17
File::Temp::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
require File/Temp.pm called at
/home/netdisco/perl5/lib/perl5/Path/Class/Dir.pm line 14
Path::Class::Dir::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
require Path/Class/Dir.pm called at
/home/netdisco/perl5/lib/perl5/Path/Class/File.pm line 8
Path::Class::File::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
require Path/Class/File.pm called at
/home/netdisco/perl5/lib/perl5/Path/Class.pm line 17
Path::Class::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
require Path/Class.pm called at /home/netdisco/bin/netdisco-web
line 31
main::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
Aborted (core dumped)
netdisco@thismachine:~$ perl -d ~/bin/netdisco-daemon start
Loading DB routines from perl5db.pl version 1.51
Editor support available.
Enter h or 'h h' for help, or 'man perldebug' for more help.
Signal SEGV at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 23.
require List/Util.pm called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/Scalar/Util.pm
line 23
require Scalar/Util.pm called at (eval
5)[/usr/share/perl/5.26/File/Copy.pm:18] line 1
eval ' require Scalar::Util; require overload; 1 ' called at
/usr/share/perl/5.26/File/Copy.pm line 18
require File/Copy.pm called at /home/netdisco/bin/netdisco-daemon
line 11
main::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
Aborted (core dumped)
netdisco@thismachine:~$ perl -d /usr/bin/cpan
Loading DB routines from perl5db.pl version 1.51
Editor support available.
Enter h or 'h h' for help, or 'man perldebug' for more help.
Signal SEGV at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 23.
require List/Util.pm called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/Scalar/Util.pm
line 23
require Scalar/Util.pm called at /usr/share/perl/5.26/File/Find.pm
line 804
eval {...} called at /usr/share/perl/5.26/File/Find.pm line 804
require File/Find.pm called at
/usr/share/perl/5.26/CPAN/CacheMgr.pm line 8
CPAN::CacheMgr::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
require CPAN/CacheMgr.pm called at /usr/share/perl/5.26/CPAN.pm
line 23
CPAN::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
require CPAN.pm called at /usr/share/perl/5.26/App/Cpan.pm line 288
App::Cpan::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
require App/Cpan.pm called at /usr/bin/cpan line 10
main::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm
line 0
Aborted (core dumped)
--- End Message ---
--- Begin Message ---
Hi Mitch
This happened to me too, and Oliver pointed me to the solution. You need to
re-install Netdisco, following the instructions in
https://metacpan.org/pod/App::Netdisco. Start by removing the Perl sub
directory in the Netdisco user home directory. When you get to the
Initialisation stage, tell it to keep the existing database. It should all work
at the end of that.
Basically the problem is that the installation builds some Perl components
using libraries that change when you upgrade the OS, so the re-install fixes
that.
Hopefully if I’ve got any of that wrong Oliver will correct me!
Regards
Max
Sent from my iPhone
On 25 Apr 2019, at 18:16, Mitch Todd
<[email protected]<mailto:[email protected]>> wrote:
I've updated a Ubuntu box running Netdisco2, and any attempt to run
netdisco-web, netdisco-daemon, etc all fail on a segmentation fault. In fact,
anything perl that I try to run as netdisco will result in a segfault,
including cpan. This happens if and only f I run them as netdisco; other users
have no issues with perl. Obviously, this is a perl issue local to the netdisco
account and not a problem with Netdisco itself, but I was wondering if anyone
has run into an issue like this before, and the most efficient way to fix the
problem. This is what I see when the netdisco user tries to run netdisco-web,
netdisco-daemon, and cpan with debug turned on:
netdisco@thismachine:~$ perl -d ~/bin/netdisco-web start
Loading DB routines from
perl5db.pl<https://url6.mailanyone.net/v1/?m=1hJhz8-0007xI-5O&i=57e1b682&c=g_pGWz5yaUYiDple02gTGUO-iYLAygcyRFzB-kT3_nBw9KoJ19YpozQsGT22LHw4MKxBzzqAxnH9dqb1CO7iui_tx84UM-LwjMPfmpO2IUBUAJGUSE4IVg1826TPTxazvOC9I3IIk4uQmMfyycHjZYu7ovyTWle-U4RZKCmGwUqyJVtDIP4RXmWiJuLYuYLrmr7zPhO8B-NdW4WnM3NLJA>
version 1.51
Editor support available.
Enter h or 'h h' for help, or 'man perldebug' for more help.
Signal SEGV at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line
23.
require List/Util.pm called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/Scalar/Util.pm
line 23
require Scalar/Util.pm called at /usr/share/perl/5.26/File/Temp.pm line
17
File::Temp::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
require File/Temp.pm called at
/home/netdisco/perl5/lib/perl5/Path/Class/Dir.pm line 14
Path::Class::Dir::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
require Path/Class/Dir.pm called at
/home/netdisco/perl5/lib/perl5/Path/Class/File.pm line 8
Path::Class::File::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
require Path/Class/File.pm called at
/home/netdisco/perl5/lib/perl5/Path/Class.pm line 17
Path::Class::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
require Path/Class.pm called at /home/netdisco/bin/netdisco-web line 31
main::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
Aborted (core dumped)
netdisco@thismachine:~$ perl -d ~/bin/netdisco-daemon start
Loading DB routines from
perl5db.pl<https://url6.mailanyone.net/v1/?m=1hJhz8-0007xI-5O&i=57e1b682&c=g_pGWz5yaUYiDple02gTGUO-iYLAygcyRFzB-kT3_nBw9KoJ19YpozQsGT22LHw4MKxBzzqAxnH9dqb1CO7iui_tx84UM-LwjMPfmpO2IUBUAJGUSE4IVg1826TPTxazvOC9I3IIk4uQmMfyycHjZYu7ovyTWle-U4RZKCmGwUqyJVtDIP4RXmWiJuLYuYLrmr7zPhO8B-NdW4WnM3NLJA>
version 1.51
Editor support available.
Enter h or 'h h' for help, or 'man perldebug' for more help.
Signal SEGV at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line
23.
require List/Util.pm called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/Scalar/Util.pm
line 23
require Scalar/Util.pm called at (eval
5)[/usr/share/perl/5.26/File/Copy.pm:18] line 1
eval ' require Scalar::Util; require overload; 1 ' called at
/usr/share/perl/5.26/File/Copy.pm line 18
require File/Copy.pm called at /home/netdisco/bin/netdisco-daemon line
11
main::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
Aborted (core dumped)
netdisco@thismachine:~$ perl -d /usr/bin/cpan
Loading DB routines from
perl5db.pl<https://url6.mailanyone.net/v1/?m=1hJhz8-0007xI-5O&i=57e1b682&c=g_pGWz5yaUYiDple02gTGUO-iYLAygcyRFzB-kT3_nBw9KoJ19YpozQsGT22LHw4MKxBzzqAxnH9dqb1CO7iui_tx84UM-LwjMPfmpO2IUBUAJGUSE4IVg1826TPTxazvOC9I3IIk4uQmMfyycHjZYu7ovyTWle-U4RZKCmGwUqyJVtDIP4RXmWiJuLYuYLrmr7zPhO8B-NdW4WnM3NLJA>
version 1.51
Editor support available.
Enter h or 'h h' for help, or 'man perldebug' for more help.
Signal SEGV at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line
23.
require List/Util.pm called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/Scalar/Util.pm
line 23
require Scalar/Util.pm called at /usr/share/perl/5.26/File/Find.pm line
804
eval {...} called at /usr/share/perl/5.26/File/Find.pm line 804
require File/Find.pm called at /usr/share/perl/5.26/CPAN/CacheMgr.pm
line 8
CPAN::CacheMgr::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
require CPAN/CacheMgr.pm called at /usr/share/perl/5.26/CPAN.pm line 23
CPAN::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
require CPAN.pm called at /usr/share/perl/5.26/App/Cpan.pm line 288
App::Cpan::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
require App/Cpan.pm called at /usr/bin/cpan line 10
main::BEGIN() called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
eval {...} called at
/home/netdisco/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/List/Util.pm line 0
Aborted (core dumped)
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