Public bug reported:
[Impact]
grep can't be used under udev, preventing kdump-tools to be used after a memory
hotplug.
[Test case]
Run grep with systemd-run -t --property MemoryDenyWriteExecute=yes /bin/grep
crashkernel /proc/cmdline
[Regression potential]
The fix is a simple rebuild, so should have minimal potential for regression.
-------------------------
# systemd-run -t --property MemoryDenyWriteExecute=yes /bin/grep crashkernel
/proc/cmdline
Running as unit: run-u54.service
Press ^] three times within 1s to disconnect TTY.
/bin/grep: error while loading shared libraries: cannot restore segment prot
after reloc: Operation not permitted
#
Under ppc64el, grep can't be used under udev, because it restricts
mapping to be Write+Execute, with MemoryDenyWriteExecute=yes. A rebuild
of grep under bionic fixes the issue.
** Affects: grep (Ubuntu)
Importance: Undecided
Status: New
** Affects: grep (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: grep (Ubuntu Bionic)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1844524
Title:
text relocation of grep prevents its use under udevd
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