Patch "drm/i915: Clear the in-use marker on execbuf failure" has been added to the 4.15-stable tree

This is a note to let you know that I've just added the patch titled

drm/i915: Clear the in-use marker on execbuf failure

to the 4.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
drm-i915-clear-the-in-use-marker-on-execbuf-failure.patch
and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Chris Wilson <[email protected]>
Date: Mon, 19 Feb 2018 14:01:44 +0000
Subject: drm/i915: Clear the in-use marker on execbuf failure

From: Chris Wilson <[email protected]>

commit e659d14ed48096f87a678e7ebbdf286a817b4d0e upstream.

If we fail to unbind the vma (due to a signal on an active buffer that needs to be moved for the next execbuf), then we need to clear the persistent tracking state we setup for this execbuf.

Testcase: igt/gem_fenced_exec_thrash/no-spare-fences-busy*

---
 drivers/gpu/drm/i915/i915_gem_execbuffer.c |    2 ++
 1 file changed, 2 insertions(+)

@@ -505,6 +505,8 @@ eb_add_vma(struct i915_execbuffer *eb, u
 		list_add_tail(&vma->exec_link, &eb->unbound);
 		if (drm_mm_node_allocated(&vma->node))
 			err = i915_vma_unbind(vma);
+		if (unlikely(err))
+			vma->exec_flags = NULL;
 	}
 	return err;
 }

Patches currently in stable-queue which might be from [email protected] are

queue-4.15/drm-i915-fix-rsvd2-mask-when-out-fence-is-returned.patch queue-4.15/drm-i915-perf-fix-perf-stream-opening-lock.patch queue-4.15/drm-i915-clear-the-in-use-marker-on-execbuf-failure.patch