[Bug 1157643] Re: procps fail to start

[David Jones]

I am wondering if someone recently changed the behaviour of Ubuntu 12.04 (in 12.04.3)
so that kernel.kptr_restrict is always 1 and cannot be changed.


Notice:

# ls -l /prov/sys/kernel/kptr_restrict
-rw-r--r-- 1 root root 0 Oct 15 15:18 /proc/sys/kernel/kptr_restrict

# cat /proc/sys/kernel/kptr_restrict
1


If the value is already "1", then the line trying to set it to "1" can safely be commented out in this file:

/etc/sysctl.d/10-kernel-hardening.conf


Does anyone have any additional insights?

-- David

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https://bugs.launchpad.net/bugs/1157643

Title:
  procps fail to start

Status in “procps” package in Ubuntu:
  Confirmed

Bug description:
  root at xxxxx:~# lsb_release -rd
  Description:    Ubuntu 12.04.2 LTS
  Release:        12.04

  root at xxxxxxx:~# apt-cache policy procps
  procps:
    Installed: 1:3.2.8-11ubuntu6
    Candidate: 1:3.2.8-11ubuntu6
    Version table:
   *** 1:3.2.8-11ubuntu6 0
          500 http://archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
          100 /var/lib/dpkg/status

  
  I have a VPS that i upgraded from Ubuntu 10.10 to 11.10 and then to 12.04.2 LTS.
  But something is wrong and now i can't upgrade procps. I get the following output,

  root at xxxxxx:~# apt-get  upgrade
  Reading package lists... Done
  Building dependency tree
  Reading state information... Done
  0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  1 not fully installed or removed.
  After this operation, 0 B of additional disk space will be used.
  Do you want to continue [Y/n]?
  Setting up procps (1:3.2.8-11ubuntu6) ...
  start: Job failed to start
  invoke-rc.d: initscript procps, action "start" failed.
  dpkg: error processing procps (--configure):
   subprocess installed post-installation script returned error exit status 1
  Errors were encountered while processing:
   procps
  E: Sub-process /usr/bin/dpkg returned an error code (1)

  the /var/log/upstart/procps.log says,

  kernel.printk = 4 4 1 7
  net.ipv6.conf.all.use_tempaddr = 2
  net.ipv6.conf.default.use_tempaddr = 2
  error: permission denied on key 'kernel.kptr_restrict'
  net.ipv4.conf.default.rp_filter = 1
  net.ipv4.conf.all.rp_filter = 1
  net.ipv4.tcp_syncookies = 1
  vm.mmap_min_addr = 65536

  And the output when i try to start procps is just the following,

  root at xxxxx:~# service procps start
  start: Job failed to start

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