[cups] CUPSD 2.2.4 LIBC6 2.24-12ubuntu1 Ubuntu Zesty 17.04 Kernel 4.10.0-32-generic Segementation Fault

Michael Sweet msweet at apple.com
Mon Aug 28 13:39:51 PDT 2017


Johannes,

This sounds like Issue #5085/5086, which was just fixed in the Github repository.


> On Aug 16, 2017, at 9:57 AM, Johannes Hörmann <johannes.laurin at gmail.com> wrote:
> 
> Dear CUPS Community,
> 
> on my Ubuntu 17.04 64 bit machine, a few weeks ago (probably after some package upgrade) cupsd stopped working. Everytime restarting the service I get
> 
> Aug 16 14:33:57 jotelha-ESPRIMO-P957 systemd[1]: Started CUPS Scheduler.
> Aug 16 14:33:57 jotelha-ESPRIMO-P957 kernel: [163039.032875] cupsd[17319]: segfault at 0 ip 00007f406c539675 sp 00007ffec7ff31b8 error 4 in libc-2.24.so[7f406c3ec000+1bc000]
> Aug 16 14:33:57 jotelha-ESPRIMO-P957 kernel: [163039.032879] audit: type=1400 audit(1502886837.322:209): apparmor="DENIED" operation="open" profile="/usr/sbin/cupsd" name="/proc/17319/cmdline" pid=17319 comm="cupsd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
> Aug 16 14:33:57 jotelha-ESPRIMO-P957 systemd[1]: cups.service: Main process exited, code=dumped, status=11/SEGV
> Aug 16 14:33:57 jotelha-ESPRIMO-P957 systemd[1]: cups.service: Unit entered failed state.
> Aug 16 14:33:57 jotelha-ESPRIMO-P957 systemd[1]: cups.service: Failed with result 'core-dump'.
> 
> in /var/log/syslog. No cupsd error log is written when activated in /etc/cups/cupsd.conf, probably because it just crashes before even doing anything.
> 
> In hope of somehow fixing the problem, I purged most of the cups-related packages with APT and reinstalled, same problem. Then purged, temporarily added the experimental sources
> 
> deb http://de.archive.ubuntu.com/ubuntu artful main
> deb-src http://de.archive.ubuntu.com/ubuntu artful main
> 
> to /etc/apt/sources.list
> 
> and installed again the newest cups packages, same problem. Ten also upgraded the libc6 packages, same problem. Finally purged cups related packages again and compiled by myself from CUPS 2.2.4 sources. Now the system consists of the following versions:
> 
> ii  libc6:amd64          2.24-12ubuntu1   amd64            GNU C Library: Shared libraries
> ii  libc6:i386              2.24-12ubuntu1   i386             GNU C Library: Shared libraries
> 
> The problem remains. Even a simple `sudo /usr/sbin/cupsd --version` gives `Segmentation fault (core dumped)`. I have no idea where to look for the source of this issue.
> 
> There are some CUPS-related packages, which I never purged, since to many other software packages depend on them. Those are:
> 
> libcups2/now 2.2.4-3 amd64 [installed,local]
> libcups2-dev/now 2.2.4-3 amd64 [installed,local]
> libcupsfilters-dev/now 1.16.0-2 amd64 [installed,local]
> libcupsfilters1/now 1.16.0-2 amd64 [installed,local]
> libcupsimage2/now 2.2.4-3 amd64 [installed,local]
> libcupsimage2-dev/now 2.2.4-3 amd64 [installed,local]
> libcupsmime1/now 2.2.4-3 amd64 [installed,local]
> libcupsppdc1/now 2.2.4-3 amd64 [installed,local]
> python3-cups/zesty,now 1.9.73-1 amd64 [installed,automatic]
> python3-cupshelpers/zesty,zesty,now 1.5.7+20160812-0ubuntu9 all [installed,automatic]
> 
> Should I also remove and reinstall those? Do you have any idea why this problem arises?
> 
> Thank you very much in advance,
> 
> Johannes
> 
> 
> Some other elevant information:
> 
> uname -r
> 
> 4.10.0-32-generic
> 
> 
> uname -a
> 
> Linux jotelha-ESPRIMO-P957 4.10.0-32-generic #36-Ubuntu SMP Tue Aug 8 12:10:06 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
> 
> 
> cat /proc/version
> 
> Linux version 4.10.0-32-generic (buildd at lcy01-05) (gcc version 6.3.0 20170406 (Ubuntu 6.3.0-12ubuntu2) ) #36-Ubuntu SMP Tue Aug 8 12:10:06 UTC 2017
> 
> 
> lsb_release -a
> 
> No LSB modules are available.
> Distributor ID:    Ubuntu
> Description:    Ubuntu 17.04
> Release:    17.04
> Codename:    zesty
> 
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_________________________________________________________
Michael Sweet, Senior Printing System Engineer



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