Inspection of the core dump and some testing proves the Segmentation fault error is caused by denied permission to read /proc/self/cmdline. Moving the executable anywhere else the problem would simply disappear.
Further inspection pointed the cause to be apparmor denied the open file call, thus, the obvious workaround is remove /sbin/dhclient's apparmor from enforcing mode: sudo apt install apparmor-utils sudo aa-complain /sbin/dhclient This would allow the dhclient to run without error. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1696499 Title: dhclient segfaults on ubuntu 17.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1696499/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
