atril-thumbnailer crashed with SIGSEGV in ev_document_misc_surface_rotate_and_scale()

StacktraceTop:
 ?? ()
 ?? ()
 ev_document_misc_surface_rotate_and_scale () from /tmp/apport_sandbox_rJORCp/usr/lib/x86_64-linux-gnu/libatrildocument.so.3
 epub_document_thumbnails_get_thumbnail () from /tmp/apport_sandbox_rJORCp/usr/lib/x86_64-linux-gnu/atril/3/backends/libepubdocument.so
 atril_thumbnail_pngenc_get ()

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

Confirmed, report added upstream.

https://github.com/mate-desktop/atril/issues/187

Fehlermeldung. Installation von Ubuntu abgebrochen.

Ubuntu Mate 16.04

Uploaded a patch which disables thumbnail generation for epubs, fixing the crash.

The attachment "fix-thumbnailer-crash.patch" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]

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

Fix released in Zesty (atril 1.18), other releases still need the patch.

[Impact]

Buggy epub handling code makes atril-thumbnailer crash
on the first epub document it encounters.

Until we write the proper thumbnailing code for epubs,
the quick fix is just to disable thumbnail generation
for this type of documents. That fix is provided in
the debdiff attached to the report.

The bug is old, and it still haunts Xenial users when
they just use the file manager and enter some directory
which contains at least one epub document. So would be
nice to have the fix backported to Xenial.

[Test Case]

Steps to reproduce:

- have some epub document
- open file manager (Caja or some other one) and enter
  the directory where the epub document is
- if apport is enabled, it will show the message about
  atril-thumbnailer crash (which is annoying)
- dmesg output will have a message about the crash too

If you need to reproduce it once more, first remove all
the files from ~/.cache/thumbnails/fail directory.

In case you need some epubs for testing, you can find
them at: https://github.com/IDPF/epub3-samples/releases

[Regression Potential]

None. This quick fix just makes sure that crashy code
won't run at all. Other types of documents (like pdfs)
aren't affected.

Yakkety is EOL, marking as Won't Fix.

Yeah, it should be marked so - I just don't have the rights to do that.

Uploaded.

The fix has been accepted into -proposed. Please test as per the regular SRU policy.

Ok, testing...

- downloaded epub30-spec.epub from https://github.com/IDPF/epub3-samples/releases
- removed my locally built atril, atril-common, libatrildocument3, libatrilview3
- installed version 1.12.2-1ubuntu0.1 of these packages from xenial-proposed
- opened the download folder in Caja file manager

Thumbnail for epub30-spec.epub isn't created, and atril-thumbnailer does not crash (confirmed with dmesg output). The fix works.

The verification of the Stable Release Update for atril 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.

This bug was fixed in the package atril - 1.12.2-1ubuntu0.1

---------------
atril (1.12.2-1ubuntu0.1) xenial; urgency=medium

  * fix-thumbnailer-crash.patch: new patch. Disables thumbnail generation
    for epub documents, stopping atril-thumbnailer crashes (LP: #1540018)

 -- Vlad Orlov <email address hidden> Mon, 30 Oct 2017 18:06:38 +0300