Crashed while building thumbnails for Windows taskbar

RESOLVED DUPLICATE of bug 1072847

Status

()

RESOLVED DUPLICATE of bug 1072847
4 years ago
3 years ago

People

(Reporter: drunkenf00l, Unassigned)

Tracking

({crash, sec-high})

35 Branch
x86_64
Windows 8.1
crash, sec-high
Points:
---

Firefox Tracking Flags

(Not tracked)

Details

(crash signature)

(Reporter)

Description

4 years ago
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.
Group: core-security
Status: UNCONFIRMED → NEW
Crash Signature: [@ _moz_cairo_surface_destroy ]
Component: Untriaged → Graphics
Ever confirmed: true
Product: Firefox → Core
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
Flags: needinfo?(ncameron)

Comment 4

4 years ago
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.
Flags: needinfo?(ncameron) → needinfo?(bas)
Keywords: crash, sec-high, testcase-wanted
(Reporter)

Comment 5

4 years ago
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.
@roc Is this a dupe of bug 1071079 / or bug 1072847? (I've not access to the later)
Flags: needinfo?(kairo)

Comment 7

4 years ago
Umm, that should have been roc, actually :)
Flags: needinfo?(kairo) → needinfo?(roc)
Status: NEW → RESOLVED
Last Resolved: 4 years ago
Flags: needinfo?(roc)
Flags: needinfo?(bas)
Resolution: --- → DUPLICATE
Duplicate of bug: 1072847
Group: core-security
Keywords: testcase-wanted
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