Comment 1 for bug 1903351

Attaching debdiff for groovy. Same changes should work for focal

built via pbuilder-dist and tested

root@659bc6500a59:/# dpkg -i /home/vfazio/pbuilder/groovy_result/procps_3.3.16-5ubuntu3_amd64.deb
(Reading database ... 4259 files and directories currently installed.)
Preparing to unpack .../procps_3.3.16-5ubuntu3_amd64.deb ...
Unpacking procps (2:3.3.16-5ubuntu3) over (2:3.3.16-5ubuntu2) ...
Setting up procps (2:3.3.16-5ubuntu3) ...
root@659bc6500a59:/# dpkg -l procps
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-==============-=================-============-=================================
ii procps 2:3.3.16-5ubuntu3 amd64 /proc file system utilities

root@bfee89058713:/# echo "kernel.shmmax = 17179869184" > shmmax.conf
root@bfee89058713:/# sysctl -e -p shmmax.conf; echo $?
sysctl: setting key "kernel.shmmax", ignoring: Read-only file system
0
root@bfee89058713:/tmp# echo "-kernel.shmmax = 17179869184" > shmmax.conf
root@bfee89058713:/tmp# sysctl -e -p shmmax.conf; echo $?
sysctl: setting key "kernel.shmmax", ignoring: Read-only file system
0