nautilus crashed with SIGSEGV in compute_drop_position()

[Jens Askengren]

* Impact: nautilus segfault when doing a dnd over the sidebar in some cases

* Test case:
- edit ~/.config/user-dirs.dirs and set the desktop dir to the user dir
- restart nautilus
- Try to dnd a file over the sidebar
-> nautilus shouldn't segfault

* Regression potential: check that dnd to the sidebar keep working

[Launchpad Janitor (janitor)]

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

[Matthew Paul Thomas (mpt)]

I can reproduce this bug 100% reliably by dragging any file or folder into the "Places" area of the sidebar. It does not happen when I drag into any other part of the sidebar.

Sample oops: https://errors.ubuntu.com/oops/47ae6f22-0050-11e5-a1ce-fa163e4ccdf2

errors.ubuntu.com page: https://errors.ubuntu.com/bucket/?id=/usr/bin/nautilus%3A11%3Acompute_drop_position%3Acompute_drop_position%3Adrag_motion_callback%3A_gtk_marshal_BOOLEAN__OBJECT_INT_INT_UINT%3Ag_closure_invoke

[Sebastien Bacher (seb128)]

That's a gtk issue and fixed in > 3.11 with that commit
https://git.gnome.org/browse/gtk+/commit/?h=gtk-3-12&id=98bdc9321eb3cd841347e7380279a9ef68a14778
if we backport it including that one would be a good idea as well
https://git.gnome.org/browse/gtk+/commit/?h=gtk-3-12&id=465d4be3cf52dba4c4da98bfcba72a543a11ff1f

[Sebastien Bacher (seb128)]

there is currently a SRU in trusty-proposed that needs to be validated/copied to updates, then we can look at backporting those changes

[Chris Halse Rogers (raof)]

Hello Jens, or anyone else affected,

Accepted gtk+3.0 into trusty-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/gtk+3.0/3.10.8-0ubuntu1.6 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 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 to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. 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!

[Sebastien Bacher (seb128)]

the update fixes the issue and seems to work fine and not create other ones

[Launchpad Janitor (janitor)]

This bug was fixed in the package gtk+3.0 - 3.10.8-0ubuntu1.6

---------------
gtk+3.0 (3.10.8-0ubuntu1.6) trusty; urgency=medium

  * debian/patches/git_sidebar_dnd_segfault.patch,
    debian/patches/git_desktop_sidebar.patch:
    - don't segfault on dnd over the sidebar if desktop = userdir, also
      don't list an useless desktop entry in this case
      (lp: #1293168)

 -- Sebastien Bacher <email address hidden> Wed, 27 May 2015 15:16:23 +0200

[Adam Conrad (adconrad)]

The verification of the Stable Release Update for gtk+3.0 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.