libreoffice fails when home on second partition

[Horacio J. Peña]

After upgrading from 17.04 to 17.10 libreoffice stopped working saying access rights were wrong. After some trying i discovered it is related to the partition my home directory is.

To replicate:

root@horape-S-T-D:~# adduser test1 --home /home/test1
Adding user `test1' ...

root@horape-S-T-D:~# su - test1
test1@horape-S-T-D:~$ libreoffice

It works!

root@horape-S-T-D:~# adduser test2 --home /disco2/home/test2
...
root@horape-S-T-D:~# su - test2
test2@horape-S-T-D:~$ libreoffice

It fails with Fatal Error as shown in the screenshot.

horape@horape-S-T-D:~$ mount
/dev/sda2 on /disco2 type ext4 (rw,relatime,errors=remount-ro,data=ordered)
/dev/sdb1 on / type ext4 (rw,noatime,errors=remount-ro,data=ordered)

horape@horape-S-T-D:~$ lsb_release -rd
Description: Ubuntu 17.10
Release: 17.10

horape@horape-S-T-D:~$ apt-cache policy libreoffice
libreoffice:
  Installed: 1:5.4.5-0ubuntu0.17.10.1
  Candidate: 1:5.4.5-0ubuntu0.17.10.1
  Version table:
 *** 1:5.4.5-0ubuntu0.17.10.1 500
        500 http://ar.archive.ubuntu.com/ubuntu artful-updates/universe amd64 Packages
        500 http://security.ubuntu.com/ubuntu artful-security/universe amd64 Packages
        100 /var/lib/dpkg/status
     1:5.4.1-0ubuntu1 500
        500 http://ar.archive.ubuntu.com/ubuntu artful/universe amd64 Packages

Thanks!

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: libreoffice 1:5.4.5-0ubuntu0.17.10.1
ProcVersionSignature: Ubuntu 4.13.0-36.40-generic 4.13.13
Uname: Linux 4.13.0-36-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
CurrentDesktop: LXDE
Date: Thu Mar 1 02:16:01 2018
InstallationDate: Installed on 2017-04-15 (319 days ago)
InstallationMedia: Lubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: libreoffice
UpgradeStatus: Upgraded to artful on 2018-02-26 (2 days ago)

[Olivier Tilloy (osomon)]

This has already been fixed (bug #1751005), please apply the latest updates (libreoffice 1:5.4.5-0ubuntu0.17.10.4).

[Horacio J. Peña (horape3)]

More info, even if i have ~/.config on root partition, I cannot open files from the big one. strace shows this:

// on root partition, it works

[pid 28522] openat(AT_FDCWD, "/home/horape-/gastos.ods", O_RDWR|O_EXCL) = 26

// on /disco2 partition, it fails

[pid 28240] openat(AT_FDCWD, "/disco2/home/horape/gastos.ods", O_RDWR|O_EXCL) = -1 EACCES (Permission denied)

open(2) says:

In general, the behavior of O_EXCL is undefined if it is used without O_CREAT. There is one exception: on Linux 2.6 and later, O_EXCL can be used without O_CREAT if pathname refers to a block device. If the block device is in use by the system (e.g., mounted), open() fails with the error EBUSY.

So, O_RDWR|O_EXCL seems to make no sense. What is it trying to do?

Thanks!