dpkg: error processing package qgis-providers (--configure): exit status 139

[Cristian Galleguillos]

Hello,

I was trying to do a simple upgrade of the packages and I got this error:

----
Setting up qgis-providers (1:3.16.12+34hirsute) ...
Segmentation fault (core dumped)

Setting up qgis-providers (1:3.16.12+34hirsute) ...
Segmentation fault (core dumped)
dpkg: error processing package qgis-providers (--configure):
 installed qgis-providers package post-installation script subprocess returned error exit status 139
dpkg: dependency problems prevent configuration of qgis:
 qgis depends on qgis-providers (= 1:3.16.12+34hirsute); however:
  Package qgis-providers is not configured yet.

dpkg: error processing package qgis (--configure):
 dependency problems - leaving unconfigured
Setting up libqgis-customwidgets (1:3.16.12+34hirsute) ...
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          dpkg: dependency problems prevent configuration of qgis-plugin-grass:
 qgis-plugin-grass depends on qgis (= 1:3.16.12+34hirsute); however:
  Package qgis is not configured yet.

dpkg: error processing package qgis-plugin-grass (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of python3-qgis:
 python3-qgis depends on qgis-providers (= 1:3.16.12+34hirsute); however:
  Package qgis-providers is not configured yet.

dpkg: error processing package python3-qgis (--configure):
 dependency problems - leaving unconfigured
Setting up libqgis-app3.16.12 (1:3.16.12+34hirsute) ...
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          No apport report written because MaxReports is reached already
                                                                                                                                                                        Setting up python3-qgis-common (1:3
.16.12+34hirsute) ...

Errors were encountered while processing:
 qgis-providers
 qgis
 qgis-plugin-grass
 python3-qgis

-----

I removed all qgis packages and then i reinstalled them:
---
    sudo apt remove *qgis*
    sudo apt autoremove
    sudo apt upgrade
    sudo apt install qgis
---

Despite this, the same error still appears.

cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=21.04
DISTRIB_CODENAME=hirsute
DISTRIB_DESCRIPTION="Ubuntu 21.04"

uname -a
Linux IDRO-58 5.14.0-051400-generic #202108292331 SMP Sun Aug 29 23:33:39 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

The postinst script contains a call to a binary called crssync (/usr/lib/qgis/crssync) which seems to be broken (it's also contained in the deb pkg and it also raises a segmentation fault):

~$ /usr/lib/qgis/crssync
Segmentation fault (core dumped)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Addam Dominec (adominec)]

Interestingly enough, the `crssync` binary crashes only when trying to exit:

```
/usr/lib/qgis/crssync --verbose
Synchronizing CRS database with GDAL/PROJ definitions.
No CRS updates were necessary.
Segmentation fault
```

Backtrace points me to `osgeo::proj::common::UnitOfMeasure::~UnitOfMeasure()` but I have no debugging symbols to actually investigate the error.

Anyway, silencing the error seems like a reasonable workaround to me. I just added `|| true` to the troublesome line in `postinst` script. The attached file `edit-postinst.sh` can be used to modify existing archive `qgis-providers_3.22.8+dfsg-1_amd64.deb` in this manner.