/usr/bin/gnome-software:11:gs_plugin_snap_set_app_pixbuf_from_data:load_icon:gs_plugin_refine_app:gs_plugin_loader_run_refine:gs_plugin_loader_search_thread_cb

The code seems to be doing:

g_autofree gchar *data = NULL;
gsize data_len;

if (g_file_get_contents (cache_fn, &data, &data_len, &local_error) &&
    gs_plugin_snap_set_app_pixbuf_from_data (app, data, data_len, &local_error))

And entering gs_plugin_snap_set_app_pixbuf_from_data with data set to NULL.

That suggests that g_file_get_contents has returned TRUE but set data to NULL.

This appears to be occurring in all currently released versions.

e.g. in 17.10:
https://errors.ubuntu.com/problem/6f76499c4df83ebd06a337e093e65277eb99cb49

I didn't manage to work out why this is happening, but gnome-software 3.25.4 replaced this code with the AsIcon code and it doesn't seem to be occuring anymore. This change was backporter to 3.22 and 3.20 and should hopefully fix this issue.

Hello errors.ubuntu.com, or anyone else affected,

Accepted gnome-software into zesty-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/gnome-software/3.22.7-0ubuntu3.17.04.7 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed.Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-zesty to verification-done-zesty. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-zesty. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Hello errors.ubuntu.com, or anyone else affected,

Accepted gnome-software into xenial-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/gnome-software/3.20.5-0ubuntu0.16.04.6 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed.Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-xenial to verification-done-xenial. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-xenial. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

There is not a single crash reported against Zesty for any version including this SRU. Marking as verification-done

This bug was fixed in the package gnome-software - 3.22.7-0ubuntu3.17.04.7

---------------
gnome-software (3.22.7-0ubuntu3.17.04.7) zesty; urgency=medium

  * debian/patches/0001-snap-Use-title-field-if-available.patch:
    - Use new title field from snapd (LP: #1555569)
  * debian/patches/0001-snap-Remove-size-limit-on-snap-responses.patch:
  * debian/patches/0002-snap-Fix-failures-to-read-from-snapd.patch:
    - Fix icons larger than 65kB not loading (LP: #1704888)
  * debian/patches/0001-snap-Mark-non-app-snaps-as-runtimes.patch:
    - Stop 'core' snap showing as an app (LP: #1704904)
  * debian/patches/0001-snap-Fix-crash-when-fail-to-use-icon-from-cache.patch:
    - Add to debian/patches/series - was not enabled in last release
  * debian/patches/0001-snap-Replace-libsoup-icon-loading-code-with-AsIcon.patch:
    - Fix crash loading cached icons (LP: #1708140)
  * debian/patches/0001-snap-Run-before-hardcoded-popular-plugin.patch:
  * debian/patches/0018-Make-gs_app_list_filter_duplicates-not-change-app-or.patch:
  * debian/patches/0019-snap-Use-first-featured-snap-as-featured-app.patch:
  * debian/patches/0020-snap-Only-feature-snaps.patch:
  * debian/patches/0021-Don-t-randomize-editors-picks.patch:
    - Only show snaps in "Editor's picks" (LP: #1705953)
    - Show snap in "Featured" section (LP: #1706478)

gnome-software (3.22.7-0ubuntu3.17.04.6) zesty; urgency=medium

  * 0001-snap-Fix-crash-when-fail-to-use-icon-from-cache.patch:
    - Fix crash when failing to load icons from cache (LP: #1702122)

 -- Robert Ancell <email address hidden> Thu, 24 Aug 2017 13:46:31 +1200

The verification of the Stable Release Update for gnome-software has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

According to errors.u.c there is no occurrence of this crash for gnome-software 3.20.5-0ubuntu0.16.04.6 in xenial-proposed.

https://errors.ubuntu.com/?release=Ubuntu%2016.04&package=gnome-software&period=month&version=3.20.5-0ubuntu0.16.04.6

However, this version introduced a new crash which may potentially be a regression (https://errors.ubuntu.com/problem/b8d914cec850474446873c5a60feba99b1d498d9 and bug 1716633)

Marking as verification-failed until it is investigated by the maintainer of the package.

I've investigated in the other bug and don't consider it a blocker - @jibel can you change this to verification-done if you are happy with this?

Given that this SRU contains several important fixes and that the new defect is not a regression but rather an incomplete fix of this crash, I'm marking this SRU a verification-done.

@Robert please submit another SRU for 1716633

This bug was fixed in the package gnome-software - 3.20.5-0ubuntu0.16.04.6

---------------
gnome-software (3.20.5-0ubuntu0.16.04.6) xenial; urgency=medium

  * debian/patches/0001-Add-gs_app_set_local_file.patch:
  * debian/patches/0017-Add-an-APT-plugin.patch:
    - Fix being unable to load .deb files (LP: #1708936)
  * debian/patches/0018-Add-a-Snap-plugin.patch:
    - Fix icons larger than 65kB not loading (LP: #1704888)
    - Stop 'core' snap showing as an app (LP: #1704904)
    - Use new title field from snapd (LP: #1555569)
  * debian/patches/0045-Don-t-generate-popular-apps-from-Ubuntu-reviews.patch:
  * debian/patches/0046-snap-Use-first-featured-snap-as-featured-app.patch
  * debian/patches/0047-snap-Only-feature-snaps.patch
  * debian/patches/0048-Don-t-randomize-editors-picks.patch
    - Only show snaps in "Editor's picks" (LP: #1705953)
    - Show snap in "Featured" section (LP: #1706478)
  * debian/patches/0049-snap-Replace-libsoup-icon-loading-code-with-AsIcon.patch
    - Fix crash loading cached icons (LP: #1708140)

 -- Robert Ancell <email address hidden> Thu, 24 Aug 2017 12:19:14 +1200