[05/14] drm/i915/error: Check the potential ctx obj's vm

Submitted by Michel Thierry on July 15, 2014, 4:20 p.m.


Message ID 1405441251-28744-6-git-send-email-michel.thierry@intel.com
State New, archived
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Commit Message

Michel Thierry July 15, 2014, 4:20 p.m.
From: Ben Widawsky <benjamin.widawsky@intel.com>

The bound list is global (all objects which back the VMAs are stored
here). Recently the BUG() in the offset lookup was demoted to a WARN,
but the fault actually lies in the caller, here.

This bug has existed since the initial introduction of PPGTT (however,
it was fixed in unmerged patches to fix up the error state).

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
 drivers/gpu/drm/i915/i915_gpu_error.c | 3 +++
 1 file changed, 3 insertions(+)

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diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 45b6191..9faebbc 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -920,6 +920,9 @@  static void i915_gem_record_active_context(struct intel_engine_cs *ring,
 	list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
+		if (!i915_gem_obj_ggtt_bound(obj))
+			continue;
 		if ((error->ccid & PAGE_MASK) == i915_gem_obj_ggtt_offset(obj)) {
 			ering->ctx = i915_error_ggtt_object_create(dev_priv, obj);