[Bug 1903351] [NEW] ignore_eacces and ignore_erofs patches don't work properly

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You have been subscribed to a public bug by Ubuntu Foundations Team Bug Bot (crichton):

The patches used to ignore errors in containers no longer work as of
3.3.16 due to upstream commit https://gitlab.com/procps-
ng/procps/-/commit/7af88da373bb4d515a98ec2f0f5d56c63904f932

The ignore_eacces patch was fuzzed and gets applied to ReadSetting, not WriteSetting
Both patches ignore the change that rc is no longer propagated up and instead everything is trapped by:

                if (!ignore_failure && errno != ENOENT)
                    rc = -1;


Versions affected: focal+


root at bfee89058713:/tmp# cat /etc/os-release 
NAME="Ubuntu"
VERSION="20.10 (Groovy Gorilla)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.10"
VERSION_ID="20.10"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=groovy
UBUNTU_CODENAME=groovy


root at bfee89058713:/# 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         2:3.3.16-5ubuntu2 amd64        /proc file system utilities


root at bfee89058713:/# echo "kernel.shmmax = 17179869184" > shmmax.conf
root at bfee89058713:/# sysctl -e -p shmmax.conf; echo $?
sysctl: setting key "kernel.shmmax": Read-only file system
255
root at bfee89058713:/# echo "-kernel.shmmax = 17179869184" > shmmax.conf
root at bfee89058713:/# sysctl -e -p shmmax.conf; echo $?
sysctl: setting key "kernel.shmmax": Read-only file system
0

** Affects: procps (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: patch
-- 
ignore_eacces and ignore_erofs patches don't work properly
https://bugs.launchpad.net/bugs/1903351
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