The timer for hangchecking can run again before the previous reset it has triggered has been handled. This can corrupt the hangcheck state as reset handling will access and write to the hangcheck data. To prevent this, avoid running the hangcheck logic while reset is in progress.
Signed-off-by: Mika Kuoppala <[email protected]> --- drivers/gpu/drm/i915/i915_irq.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 3a25a6c..e709a47 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -2434,6 +2434,9 @@ void i915_hangcheck_elapsed(unsigned long data) if (!i915_enable_hangcheck) return; + if (i915_reset_in_progress(&dev_priv->gpu_error)) + return; + for_each_ring(ring, dev_priv, i) { u32 seqno, acthd; bool busy = true; -- 1.7.9.5 _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
