[Bug 30188] New: X server crashes with a SIGBUS on Evergreen

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=30188

           Summary: X server crashes with a SIGBUS on Evergreen
           Product: DRI
           Version: XOrg CVS
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel at lists.freedesktop.org
        ReportedBy: tomasz.figa at gmail.com


I have recently switched my desktop PC with Radeon HD 5770 from fglrx to
xf86-video-ati and discovered a problem causing the X server to crash with a
SIGBUS signal.

I can reproduce this bug by opening a PDF document in Okular and scrolling
through several pages back and forth, then mouse cursor hangs and X server
crashes. It happens regardless of kernel version.

Disabling RenderAccel helps, but it's not a solution since it turns off the
acceleration.

It's not a duplicate of https://bugs.freedesktop.org/show_bug.cgi?id=29738 ,
because it still happens with pre-709ea97145c125b3811ff70429e90ebdb0e832e5
kernels.

My setup:

Linux 2.6.35.4, git drm-fixes or git drm-radeon-testing
xorg-server git 09/13
xf86-video-ati git 09/13
libdrm git 09/13

Intel Core 2 Quad Q6600 Processor
AMD Radeon HD 5770

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