[Bug 106680] [CI] igt at gem_exec_await@wide-contexts - fail/dmesg-fail - Failed assertion: !"GPU hung"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106680

--- Comment #1 from Chris Wilson <chris at chris-wilson.co.uk> ---
The lockdep splat was fixed by

commit 0c591a40af1b369cc11dce4d558dd71bebbdc090
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Sat May 12 09:49:57 2018 +0100

    drm/i915: Mark up nested spinlocks

    When we process the outstanding requests upon banning a context, we need
    to acquire both the engine and the client's timeline, nesting the locks.
    This requires explicit markup as the two timelines are now of the same
    class, since commit a89d1f921c15 ("drm/i915: Split i915_gem_timeline into
    individual timelines").

    Testcase: igt/gem_eio/banned
    Fixes: a89d1f921c15 ("drm/i915: Split i915_gem_timeline into individual
timelines")
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
    Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
    Cc: Michel Thierry <michel.thierry at intel.com>
    Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20180512084957.9829-1-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 89bf5d67cb74..0a2070112b66 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3119,7 +3119,7 @@ static void engine_skip_context(struct i915_request
*request)
        GEM_BUG_ON(timeline == &engine->timeline);

        spin_lock_irqsave(&engine->timeline.lock, flags);
-       spin_lock(&timeline->lock);
+       spin_lock_nested(&timeline->lock, SINGLE_DEPTH_NESTING);

        list_for_each_entry_continue(request, &engine->timeline.requests, link)
                if (request->ctx == hung_ctx)

-- 
You are receiving this mail because:
You are on the CC list for the bug.
You are the QA Contact for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20180529/4e988bb0/attachment.html>