Using daily image of February 1, with updates for Perl. (I have no reason to think Perl have something to do with the problem)
I normally don't use pgrep and pkill, but have decided to try them. I get something like: root@kibar:~# pgrep Xorg pgrep: cannot allocate 4294967295 bytes root@kibar:~# pgrep rasberry pgrep: cannot allocate 4294967295 bytes Did: # apt install procps-dbgsym But then: root@kibar:~# apt-get source procps Reading package lists... Done NOTICE: 'procps' packaging is maintained in the 'Git' version control system at: https://salsa.debian.org/debian/procps.git Please use: git clone https://salsa.debian.org/debian/procps.git to retrieve the latest (possibly unreleased) updates to the package. Need to get 653 kB of source archives. Get:1 http://deb.debian.org/debian sid/main procps 2:3.3.16-5 (dsc) [2,127 B] Get:2 http://deb.debian.org/debian sid/main procps 2:3.3.16-5 (tar) [622 kB] Get:3 http://deb.debian.org/debian sid/main procps 2:3.3.16-5 (diff) [29.4 kB] Fetched 653 kB in 7s (95.9 kB/s) sh: 1: dpkg-source: not found W: Download is performed unsandboxed as root as file 'procps_3.3.16-5.dsc' couldn't be accessed by user '_apt'. - pkgAcquire::Run (1073741837: Permission denied) E: Unpack command 'dpkg-source --no-check -x procps_3.3.16-5.dsc' failed. N: Check if the 'dpkg-dev' package is installed. Tab shows: root@kibar:~# dpkg dpkg dpkg-maintscript-helper dpkg-reconfigure dpkg-deb dpkg-preconfigure dpkg-split dpkg-divert dpkg-query dpkg-statoverride dpkg-fsys-usrunmess dpkg-realpath dpkg-trigger root@kibar:~# So... don't know yet where dpkg-source should come from... but the real problem is: pgrep: cannot allocate 4294967295 bytes