Bug 1090203

Summary:	Evo hangs one whole workspace when a particular e-mail is selected in preview (ews?)
Product:	[Fedora] Fedora	Reporter:	Bojan Smojver <bojan>
Component:	evolution	Assignee:	Matthew Barnes <mbarnes>
Status:	CLOSED DUPLICATE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	20	CC:	fabiano, lucilanga, mbarnes, mcrha
Target Milestone:	---
Target Release:	---
Hardware:	i686
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-04-23 16:30:43 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Bojan Smojver 2014-04-22 22:40:21 UTC

Description of problem:
When I move to a particular e-mail (hosted on Exchange 2010, accessed via ews), the whole Gnome workspace, including Evo, becomes "frozen". Clicking on any other window will not work. I can still change the workspace (using workspace indicator extension) and do anything in any other workspace, but this one is frozen until I shut Evo down. Sometimes, it untangles itself after many minutes. Sometimes not.

The e-mail, which I cannot share here (unfortunately), has a single 81 kB attachement - a CSV file. It can be seen easily in Outlook.

Top does not really show any activity. Evo is not busy or anything, so looks like some sort of deadlock.

Version-Release number of selected component (if applicable):
evolution-3.10.4-2.fc20.i686

How reproducible:
Always.

Steps to Reproduce:
1. Click on the e-mail in question.
2. No preview.
3. Workspace freezes.

Actual results:
Whole workspace frozen.

Expected results:
Should not freeze.

Additional info:
Started some weeks ago?

Comment 1 Bojan Smojver 2014-04-22 22:43:07 UTC

One more thing. The "frozen workspace" behaviour is not the only way this bug manifests itself. Sometimes, it is just Evo that hangs. It displays "retrieving message <id>" down in the status bar and hangs. Clicking anywhere else in Evo does nothing.

Comment 2 Bojan Smojver 2014-04-22 23:02:52 UTC

This must be some kind of message display problem. I just turned preview off, positioned myself on the message and displayed source of it just fine (Ctrl + U). However, a double click on it (view), immediately hangs the interface.

Comment 3 Milan Crha 2014-04-23 07:04:05 UTC

Thanks for a bug report. I suppose the message's preview also causes high CPU usage. It would be good to install debuginfo packages for evolution-data-server and evolution, and get a backtrace of "running" evolution, like with:
   $ gdb --batch --ex "t a a bt" -pid=`pidof evolution` &>bt.txt
It (the bt.txt file) can contain some private information, thus make sure you'll not expose any (I usually search for "pass" at least (quotes for clarity only)). I suspect that webkit got stock in accessibility/a11y code, I recall some upstream bugs related to it.

Comment 4 Bojan Smojver 2014-04-23 07:43:18 UTC

(In reply to Milan Crha from comment #3)
> I suppose the message's preview also causes high
> CPU usage.

When any of the hangs happen, CPU usage is practically non-existent.

Comment 5 Bojan Smojver 2014-04-23 08:07:14 UTC

Backtraces sent privately.

Comment 6 Milan Crha 2014-04-23 16:30:43 UTC

Thanks, the backtraces helped to identify the issue. It is the same as bug #1089966, see the bug #1089966 comment #2 for a workaround.

*** This bug has been marked as a duplicate of bug 1089966 ***