This also broke winff:
(21:06:31) elbrus: Sweet5hark: winff FTBFS and seems to time out on libreoffice
generating pdf's
(21:06:34) elbrus: any idea?
(21:06:43) elbrus:
https://launchpadlibrarian.net/283037524/buildlog_ubuntu-yakkety-amd64.winff_1.5.3-7_BUILDING.txt.gz
(21:07:10) ***elbrus was pointed to you at #ubuntu-motu by jbicha
(21:17:08) Sweet5hark: elbrus: thats likely
https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1616548 see
https://git.launchpad.net/~libreoffice/ubuntu/+source/libreoffice/commit/?h=ubuntu-yakkety-5.2&id=28031ef15ac104122180669727c9420bcd51c147
show a likely workaround broken CUPS
(21:19:35) Sweet5hark: elbrus: thus you need to set SAL_DISABLE_CUPS=true in
the env for cups not stalling LO in an sbuild
(21:20:57) elbrus: Sweet5hark: ok, but am I correct to say this is Ubuntu
specific?
(21:21:13) elbrus: In Debian, the build was OK (in pbuilder)
(21:22:47) Sweet5hark: elbrus: yes, this is likely ubuntu specific. testbuilds
up to libreoffice 5.2.0~rc4 were fine, then it broke, likely by a cups update.
(21:29:19) Sweet5hark: elbrus: you might help triaging if you downgrade cups
and retry. Using LibreOffices own build as testcase is annoying due to the
buildtime. but with winff you might have found a good smaller testcase for our
CUPS guys ...
(21:30:16) Sweet5hark: elbrus: FWIW, "in Debian" is somewhat ambiguous, given
the number of releases etc. it has. ;)
(21:32:17) elbrus: "in Debian" I mean in unstable... I just uploaded the
package several days ago
(21:35:14) Sweet5hark: elbrus: FWIW, I couldnt repro that in a pbuilder, only
in sbuild. I dont know exactly was the difference/root cause.
(21:37:59) elbrus: Sweet5hark: I don't have an sbuild setup...
(21:38:14) elbrus: I'll ask ginggs...
(21:38:20) elbrus: or try in my ppa
(21:38:26) elbrus: maybe that is smarter then
(21:39:36) jbicha: winff built for me in a yakkety sbuild last week
(21:40:00) elbrus: it fails in launchpad multiple times
(21:40:11) jbicha: yes I know
(21:40:27) jbicha: I test built locally and it worked, but not in the launchpad
builders
(21:40:50) elbrus: jbicha: were you the one that also requested a retry?
(21:41:54) jbicha: last week I did yes
(21:42:22) ***elbrus noticed that the retry was fresher than his own retry
(21:43:07) elbrus: jbicha: you didn't try building it in a ppa did you?
(21:43:23) jbicha: no
(21:43:40) elbrus: well, I will try that tonight probably
(21:56:09) elbrus: jbicha: seems to reproduce in MY pbuilder env....
(21:56:17) elbrus: it's hanging currently
(21:56:27) jbicha: good! ;)
(21:57:02) elbrus: trying again with the CUPS env var
(22:15:03) elbrus: Sweet5hark: with your fix, winff builds in my pbuilder
env.... so seems like winff is a smaller testcase for the issue
(22:20:13) ricotz: elbrus, jbicha, it likely works if the host system has a
running cups instance
(22:29:42) elbrus: Sweet5hark: thanks a lot, I now have a successful build in
my PPA. Will upload to Ubuntu Yakkety shortly
(22:46:18) elbrus: winff is fixed:
https://launchpad.net/ubuntu/+source/winff/1.5.3-7ubuntu1/+build/10742736
As per above, this is confirmed in cups (Confirmed) and worked around in
winff (Fix Commited).
** Also affects: winff (Ubuntu)
Importance: Undecided
Status: New
** Changed in: winff (Ubuntu)
Status: New => Fix Committed
** Changed in: cups (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1616548
Title:
Cups causes LibreOffice unittests to loop in a sbuild
Status in cups package in Ubuntu:
Confirmed
Status in sbuild package in Ubuntu:
Incomplete
Status in winff package in Ubuntu:
Fix Committed
Bug description:
When building LibreOffice 1:5.2.0-0ubuntu1 on a xenial host with a
yakkety sbuild, e.g. by:
sbuild -A -d yakkety-amd64 (...).dsc
this loops/busy hangs with unittests. This was working ok up to
5.2.0~rc4 (=final), it is a regression by a LibreOffice dependency,
most likely CUPS, which was updated.
I tried to inject debug symbols by running with a: --chroot-setup-
command and then run something along the lines of:
apt install cups
wget http://launchpadlibrarian.net/278966811/cups-dbgsym_2.2~rc1-4_amd64.ddeb
wget
http://launchpadlibrarian.net/278966816/libcups2-dbgsym_2.2~rc1-4_amd64.ddeb
dpkg -i cups-dbgsym_2.2~rc1-4_amd64.ddeb
dpkg -i libcups2-dbgsym_2.2~rc1-4_amd64.ddeb
before starting the build proper, but I got only marginally better
debug info. The hanging LibreOffice test processes usually have 2-4
child processes. The parent and one of the childs are busy, while the
rest idle.
Here is a stacktrace of the busy child:
Program received signal SIGPIPE, Broken pipe.
0x00002b0a80dd615f in fgetspent (stream=0x11) at fgetspent.c:43
43 in fgetspent.c
(gdb) bt
#0 0x00002b0a80dd615f in fgetspent (stream=0x11) at fgetspent.c:43
#1 0x000000000000001e in ?? ()
#2 0x000055c4976981e0 in ?? ()
#3 0x00002b0a8aff8d20 in ipp_options () from
/usr/lib/x86_64-linux-gnu/libcups.so.2
#4 0x0000000000004002 in ?? ()
#5 0x00002b0a8ada9feb in ppdCollect2 (ppd=0x2b0a8ada9bdf
<cupsGetDestMediaDefault+415>, section=29, min_order=0, choices=0x2b0a8adad6f3
<cupsFileGetConf+467>) at emit.c:145
#6 0x0000000000000000 in ?? ()
Here is a stacktrace of the busy parent:
Thread 3 "CUPSManager cup" received signal SIGPIPE, Broken pipe.
0x00002b0a80dd615f in fgetspent (stream=0x11) at fgetspent.c:43
43 in fgetspent.c
(gdb) bt
#0 0x00002b0a80dd615f in fgetspent (stream=0x11) at fgetspent.c:43
#1 0x000000000000001e in ?? ()
#2 0x000055c4976981e0 in ?? ()
#3 0x00002b0a8aff8d20 in ipp_options () from
/usr/lib/x86_64-linux-gnu/libcups.so.2
#4 0x0000000000004002 in ?? ()
#5 0x00002b0a8ada9feb in ppdCollect2 (ppd=0x2b0a8ada9bdf
<cupsGetDestMediaDefault+415>, section=29, min_order=0, choices=0x2b0a8adad6f3
<cupsFileGetConf+467>) at emit.c:145
#6 0x0000000000000000 in ?? ()
When pressing "c" in gdb to continue, both processes stop very quickly again
with the SIGPIPE.
Venturing a guess: Is the signal handling of CUPS b0rked? As fgetspent reads
the shadow file[1], maybe there are missing permissions or other sandbox issues
that CUPS doesnt handle error cases for properly?
[1] http://linux.die.net/man/3/fgetspent
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