1073370 - Crashed while building thumbnails for Windows taskbar

Status: RESOLVED DUPLICATE of bug 1072847

(Core :: Graphics, defect)

Description

[Tony Paloma]

User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0
Build ID: 20140925030203

Steps to reproduce:

I hovered over the Nightly icon in the Windows taskbar.


Actual results:

The browser crashed.


Expected results:

The browser should not have crashed. It usually doesn't. I don't know know what was different this time to cause it.

Comment 1

[Tony Paloma]

Here's the link to the crash: https://crash-stats.mozilla.com/report/index/6515bc1d-6626-4241-9b7a-bfb312140926

Comment 2

[John Schoenick [:johns]]

It looks like in bug 764125 we added a delete of mSurface, but if Init fails it is never set:
> http://hg.mozilla.org/mozilla-central/file/9e3d649b80a2/gfx/2d/DrawTargetCairo.cpp#l511

Which would call cairo_surface_destroy on uninitialized memory.

I'm not sure that this can actually happen or is just a red herring though, paging @nrc

Comment 3

[Tony Paloma]

Happened again
https://crash-stats.mozilla.com/report/index/49bcca5f-4968-4c8d-844a-642162140927

Comment 4

[Nick Cameron [:nrc]]

Hi, I'm no longer working on graphics stuff and the DrawTargetCairo stuff was so long ago I don't think I can remember anything useful here. Probably the best person to ask about this is Bas.

Comment 5

[Tony Paloma]

It happened again:
https://crash-stats.mozilla.com/report/index/8247e49a-f8b4-4e2a-8455-969492140930

This time I hovered over the icon in the taskbar and noticed it was showing a spinner for the thumbnail of every tab except for the one in the window that I currently had opened. After waiting a second or two, I hovered over one of the tabs with the loading spinner for a thumbnail and it crashed.

Comment 6

[John Schoenick [:johns]]

@roc Is this a dupe of bug 1071079 / or bug 1072847? (I've not access to the later)

Comment 7

[Robert Kaiser]

Umm, that should have been roc, actually :)