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

Fri Jun 4 15:21:39 UTC 2021

I've tested focal/groovy/hirsute and the changes seem to work.

---

root at 9ff1aefae2e8:/tmp# cat /etc/os-release 
NAME="Ubuntu"
VERSION="20.04.2 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.2 LTS"
VERSION_ID="20.04"
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=focal
UBUNTU_CODENAME=focal

root at 9ff1aefae2e8:/tmp# sysctl -V
sysctl from procps-ng UNKNOWN

root at 9ff1aefae2e8:/tmp# 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         2:3.3.16-1ubuntu2.2 amd64        /proc file system utilities

root at 9ff1aefae2e8:/tmp# echo "kernel.shmmax = 17179869184" > shmmax.conf
root at 9ff1aefae2e8:/tmp# sysctl -e -p shmmax.conf; echo $?
sysctl: setting key "kernel.shmmax", ignoring: Read-only file system
0

root at 9ff1aefae2e8:/tmp# echo "-kernel.shmmax = 17179869184" > shmmax.conf
root at 9ff1aefae2e8:/tmp# sysctl -e -p shmmax.conf; echo $?
sysctl: setting key "kernel.shmmax", ignoring: Read-only file system
0

root at 9ff1aefae2e8:/tmp# useradd test
root at 9ff1aefae2e8:/tmp# su test
$ bash

test at 9ff1aefae2e8:/tmp$ echo "kernel.shmmax = 17179869184" > shmmax.conf
test at 9ff1aefae2e8:/tmp$ sysctl -e -p shmmax.conf; echo $?
sysctl: permission denied on key "kernel.shmmax", ignoring
0

test at 9ff1aefae2e8:/tmp$ echo "-kernel.shmmax = 17179869184" > shmmax.conf
test at 9ff1aefae2e8:/tmp$ sysctl -e -p shmmax.conf; echo $?
sysctl: permission denied on key "kernel.shmmax", ignoring
0

---

root at bc651792633c:/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 bc651792633c:/tmp# sysctl -V
sysctl from procps-ng 3.3.16

root at bc651792633c:/tmp# 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         2:3.3.16-5ubuntu2.2 amd64        /proc file system utilities

root at bc651792633c:/tmp# echo "kernel.shmmax = 17179869184" > shmmax.conf
root at bc651792633c:/tmp# sysctl -e -p shmmax.conf; echo $?
sysctl: setting key "kernel.shmmax", ignoring: Read-only file system
0

root at bc651792633c:/tmp# echo "-kernel.shmmax = 17179869184" > shmmax.conf
root at bc651792633c:/tmp# sysctl -e -p shmmax.conf; echo $?
sysctl: setting key "kernel.shmmax", ignoring: Read-only file system
0

root at bc651792633c:/tmp# useradd test
root at bc651792633c:/tmp# su test
$ bash

test at bc651792633c:/tmp$ echo "kernel.shmmax = 17179869184" > shmmax.conf
test at bc651792633c:/tmp$ sysctl -e -p shmmax.conf; echo $?
sysctl: permission denied on key "kernel.shmmax", ignoring
0

test at bc651792633c:/tmp$ echo "-kernel.shmmax = 17179869184" > shmmax.conf
test at bc651792633c:/tmp$ sysctl -e -p shmmax.conf; echo $?
sysctl: permission denied on key "kernel.shmmax", ignoring
0

---

root at 78489e17c933:/tmp# cat /etc/os-release 
NAME="Ubuntu"
VERSION="21.04 (Hirsute Hippo)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 21.04"
VERSION_ID="21.04"
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=hirsute
UBUNTU_CODENAME=hirsute

root at 78489e17c933:/tmp# sysctl -V
sysctl from procps-ng 3.3.16

root at 78489e17c933:/tmp# 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         2:3.3.16-5ubuntu3.1 amd64        /proc file system utilities

root at 78489e17c933:/tmp# echo "kernel.shmmax = 17179869184" > shmmax.conf
root at 78489e17c933:/tmp# sysctl -e -p shmmax.conf; echo $?
sysctl: setting key "kernel.shmmax", ignoring: Read-only file system
0

root at 78489e17c933:/tmp# echo "-kernel.shmmax = 17179869184" > shmmax.conf
root at 78489e17c933:/tmp# sysctl -e -p shmmax.conf; echo $?
sysctl: setting key "kernel.shmmax", ignoring: Read-only file system
0

root at 78489e17c933:/tmp# useradd test
root at 78489e17c933:/tmp# su test
$ bash

test at 78489e17c933:/tmp$ echo "kernel.shmmax = 17179869184" > shmmax.conf
test at 78489e17c933:/tmp$ sysctl -e -p shmmax.conf; echo $?
sysctl: setting key "kernel.shmmax", ignoring: Read-only file system
0

test at 78489e17c933:/tmp$  echo "-kernel.shmmax = 17179869184" > shmmax.conf
test at 78489e17c933:/tmp$ sysctl -e -p shmmax.conf; echo $?
sysctl: setting key "kernel.shmmax", ignoring: Read-only file system
0

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https://bugs.launchpad.net/bugs/1903351

Title:
  ignore_eacces and ignore_erofs patches don't work properly

Status in procps package in Ubuntu:
  Fix Released
Status in procps source package in Focal:
  Fix Committed
Status in procps source package in Groovy:
  Fix Committed
Status in procps source package in Hirsute:
  Fix Committed

Bug description:
  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

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