[Bug 28902] New: activated KMS leads to complete freeze when viewing BIG images in Iceweasel

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=28902

           Summary: activated KMS leads to complete freeze when viewing
                    BIG images in Iceweasel
           Product: Drivers
           Version: 2.5
    Kernel Version: 2.6.32-5-686
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
        AssignedTo: drivers_video-dri@kernel-bugs.osdl.org
        ReportedBy: spamfang1199@yahoo.de
        Regression: No


In early versions of 2.6.32 line, my system used to often freeze when I tried
to open big (1,7mb+) images in Iceweasel. Since the kernel got updated, these
freezes seem to have vanished.

But now I can reproduce the freeze every time, when visiting a certain .onion
site and there viewing a certain picture. Therefore I uploaded this very
picture to another pic-hoster and tried to view it there: The machine did NOT
freeze. So it is not the fault of the picture itself. It is the teamwork of
that specific .onion site and that picture.

This bug occurs NOT, if I deactivate KMS.

When the system is frozen, i can ping it, but not SSH into it any more.
Backtraces are very seldom. I only got 4 (see attachment) since the logs
usually show nothing.

I have to add another thing: 

With activated KMS the desktop always freezes for a few seconds, when opening
large pictures in Iceweasel, or clicking on the tab which contains this large
picture. It also shows this behaviour, when switching between windows. In
earlier versions of 2.6.32 the system often used to freeze completely at that
moment. Now its only for a few seconds, except I try the mentioned .onion site
with that certain picture.

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