oxynux.org/blog

If you have a grsec-patched kernel and PaX is enabled, update-grub is failing, witch is a little bit annoying: 8:45 root@sloane ~# update-grub Searching for GRUB installation directory ... found: /boot/grub zsh: exit 137 update-grub After a little more in-depth look, the problem comes from grub-probe not having the right PaX flags. Default flags: 8:47 root@sloane ...

With a grsec-patched kernel, only members of the specific group #112 are allowed to access /proc, but having the snmp user in grsec group is not enough, because snmpd doesn't set groups the user belongs to properly. You can use the -g flag, but it will only change the owner group, and still won't set groups ...