[tmux-nicklist-portable.pl] - print() on closed filehandle $fifo at line 213

needless commented 1 month ago

This issue is not easy to reproduce so I try to explain the running environment first and when this issue specifically occurs. The running environment is:

Irssi v1.4.5

ZNC has IRC user credentials and has active to the IRC network
irrsi runs in tmux and is connected the lo loopback interface to locally running ZNC daemon

The running state is the IRC user session has been active for a long time (days/weeks). IRC connection drops and ZNC finished authenticating successfully.

After attaching the running tmux session the status logs writes following:

print() on closed filehandle $fifo at /home/needle/.irssi/scripts/autorun/tmux-nicklist-portable.pl line 213.
print() on closed filehandle $fifo at /home/needle/.irssi/scripts/autorun/tmux-nicklist-portable.pl line 213.
print() on closed filehandle $fifo at /home/needle/.irssi/scripts/autorun/tmux-nicklist-portable.pl line 213.
print() on closed filehandle $fifo at /home/needle/.irssi/scripts/autorun/tmux-nicklist-portable.pl line 213.

This does not happen when starting a new tmux session.

I try if it is possible to reproduce this without using ZNC. irssi directly connected to IRC network and needs to re-authenticate due to connection loss to IRC.

needless commented 1 month ago

Add running irrsi scripts:

ls .irssi/scripts/autorun -1
adv_windowlist.pl
chansort_configurable.pl
nickcolor_expando_simple.pl
nm2.pl
recentdepart.pl
scriptassist.pl
spellcheck.pl
tmux-nicklist-portable.pl
tmux_away.pl
trackbar.pl
usercount.pl

Irssi running plugin versions:

|12:24 >> Please wait...
│12:24 ,--[ScriptAssist]
│12:24 | o adv_windowlist           Up to date. (1.11)
│12:24 | o chansort_configurable    Up to date. (1.2)
│12:24 | o nickcolor_expando_simple Up to date. (0.0.2)
│12:24 | o nm2                      Up to date. (2.1)
│12:24 | o recentdepart             Up to date. (0.7)
│12:24 | o scriptassist             Up to date. (2023111700)
│12:24 | o spellcheck               Up to date. (0.9.1)
│12:24 | o tmux-nicklist-portable   Up to date. (0.1.8)
│12:24 | o tmux_away                Up to date. (2.1)
│12:24 | o trackbar                 Up to date. (2.9)
│12:24 | o usercount                Up to date. (1.20)
│12:24 `--<check>->

Add running Perl version:

perl -V
Summary of my perl5 (revision 5 version 40 subversion 0) configuration:

  Platform:
    osname=linux
    osvers=6.1.90-0-lts
    archname=armv8l-linux-thread-multi-64int
    uname='linux build-edge-armv7 6.1.90-0-lts #1-alpine smp mon, 06 may 2024 08:14:42 +0000 armv8l linux '
    config_args='-des -Dcccdlflags=-fPIC -Dccdlflags=-rdynamic -Dprefix=/usr -Dprivlib=/usr/share/perl5/core_perl -Darchlib=/usr/lib/perl5/core_perl -Dvendorprefix=/usr -Dvendorlib=/usr/share/perl5/vendor_perl -Dvendorarch=/usr/lib/perl5/vendor_perl -Dsiteprefix=/usr/local -Dsitelib=/usr/local/share/perl5/site_perl -Dsitearch=/usr/local/lib/perl5/site_perl -Dlocincpth=  -Doptimize=-Os -fstack-clash-protection -Wformat -Werror=format-security -O2 -Duselargefiles -Dusethreads -Duseshrplib -Dd_semctl_semun -Dman1dir=/usr/share/man/man1 -Dman3dir=/usr/share/man/man3 -Dinstallman1dir=/usr/share/man/man1 -Dinstallman3dir=/usr/share/man/man3 -Dman1ext=1 -Dman3ext=3pm -Dcf_by=Alpine -Ud_csh -Ud_fpos64_t -Ud_off64_t -Dusenm -Duse64bitint'
    hint=recommended
    useposix=true
    d_sigaction=define
    useithreads=define
    usemultiplicity=define
    use64bitint=define
    use64bitall=undef
    uselongdouble=undef
    usemymalloc=n
    default_inc_excludes_dot=define
  Compiler:
    cc='cc'
    ccflags ='-D_REENTRANT -D_GNU_SOURCE -D_GNU_SOURCE -fwrapv -fno-strict-aliasing -pipe -fstack-protector-strong -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64'
    optimize='-Os -fstack-clash-protection -Wformat -Werror=format-security -O2'
    cppflags='-D_REENTRANT -D_GNU_SOURCE -D_GNU_SOURCE -fwrapv -fno-strict-aliasing -pipe -fstack-protector-strong'
    ccversion=''
    gccversion='13.2.1 20240309'
    gccosandvers=''
    intsize=4
    longsize=4
    ptrsize=4
    doublesize=8
    byteorder=12345678
    doublekind=3
    d_longlong=define
    longlongsize=8
    d_longdbl=define
    longdblsize=8
    longdblkind=0
    ivtype='long long'
    ivsize=8
    nvtype='double'
    nvsize=8
    Off_t='off_t'
    lseeksize=8
    alignbytes=8
    prototype=define
  Linker and Libraries:
    ld='cc'
    ldflags =' -fstack-protector-strong -L/usr/local/lib'
    libpth=/usr/lib /usr/local/lib /lib
    libs=-lpthread -ldl -lm -lcrypt -lutil -lc
    perllibs=-lpthread -ldl -lm -lcrypt -lutil -lc
    libc=/usr/lib/libc.a
    so=so
    useshrplib=true
    libperl=libperl.so
    gnulibc_version=''
  Dynamic Linking:
    dlsrc=dl_dlopen.xs
    dlext=so
    d_dlsymun=undef
    ccdlflags='-rdynamic -Wl,-rpath,/usr/lib/perl5/core_perl/CORE'
    cccdlflags='-fPIC'
    lddlflags='-shared -Os -fstack-clash-protection -Wformat -Werror=format-security -O2 -L/usr/local/lib -fstack-protector-strong'

Characteristics of this binary (from libperl): 
  Compile-time options:
    HAS_LONG_DOUBLE
    HAS_STRTOLD
    HAS_TIMES
    MULTIPLICITY
    PERLIO_LAYERS
    PERL_COPY_ON_WRITE
    PERL_DONT_CREATE_GVSV
    PERL_HASH_FUNC_SIPHASH13
    PERL_HASH_USE_SBOX32
    PERL_MALLOC_WRAP
    PERL_OP_PARENT
    PERL_PRESERVE_IVUV
    PERL_USE_SAFE_PUTENV
    USE_64_BIT_INT
    USE_ITHREADS
    USE_LARGE_FILES
    USE_LOCALE
    USE_LOCALE_COLLATE
    USE_LOCALE_CTYPE
    USE_LOCALE_NUMERIC
    USE_LOCALE_TIME
    USE_PERLIO
    USE_PERL_ATOF
    USE_REENTRANT_API
    USE_THREAD_SAFE_LOCALE
  Built under linux
  Compiled at Jun 25 2024 08:47:07
  %ENV:
    PERL_LWP_SSL_VERIFY_HOSTNAME="0"
  @INC:
    /usr/local/lib/perl5/site_perl
    /usr/local/share/perl5/site_perl
    /usr/lib/perl5/vendor_perl
    /usr/share/perl5/vendor_perl
    /usr/lib/perl5/core_perl
    /usr/share/perl5/core_perl

needless commented 1 month ago

Debugging the plugins settings in the IRC channel, with Koffa. Relevant part of conversation:

 I was just looking at the signals it hooks up to and one is for switching windows. if tmux_away goes to its default window at the right time the fifo might not yet exist? 
/set tmux_away_window   ...  maybe setting tmux_away_grace to a few seconds could avoid the race?

Before changing:

/set tmux_away
[misc]
                 tmux_away_active ON
                  tmux_away_grace 0
                tmux_away_message Catching ZZz's
                   tmux_away_nick 
                 tmux_away_repeat 180
                 tmux_away_window 1

Setting the tmux_away_grace to 5. /set tmux_away_grace 5

[misc]
                  tmux_away_grace 5

irssi / scripts.irssi.org

[tmux-nicklist-portable.pl] - print() on closed filehandle $fifo at line 213 #882