Messages in this thread | | | Date | Wed, 22 Jul 2009 15:03:30 +0200 (CEST) | From | Thomas Gleixner <> | Subject | Re: i915_driver_irq_handler - BUG: NULL pointer dereference |
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On Wed, 22 Jul 2009, John Kacur wrote:
> Hello Thomas et al > > I'm still seeing this sometimes, in this case during shutdown with the experimental rt kernel > based off of 2.6.31-rc3 > > The system is going down for reboot NOW! > Disabling monthly Smolt update: [ OK ] > Shutting down Avahi daemon: [drm:gm45_get_vblank_counter] *ERROR* trying to get1 > BUG: unable to handle kernel NULL pointer dereference at 0000000000000084 > IP: [<ffffffffa05df8ef>] i915_driver_irq_handler+0x848/0x8e9 [i915]
So it crashes in the i915 interrupt handler. Smells like a synchronization problem on shutdown which is exposed by the threaded handler.
Dave, any idea ?
Thanks,
tglx
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