[Bug 110384] [CI][DRMTIP] igt at kms_flip@* - incomplete - system hang/timeout

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110384

--- Comment #4 from Daniel Vetter <daniel at ffwll.ch> ---
Ok so a large pile of these are the Jenkins SSH connector going upside down.
Tomi says he fixed those.

But there's a bunch in here which look like serious issues, e.g.

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_250/fi-icl-u2/igt@kms_flip@flip-vs-modeset-vs-hang-interruptible.html

- khungtaskd fires
- unfortunately all the useful data from the hung task checker in pstore is
drowned out in the ftrace dump (I'm trying to create a patch for this)
- plus lockdep splat (already wrote a patch for that, need to convince myself
it's correct)
- plus panic when we probably shouldn't (working with Tomi to fix the Kconfig)

hung task on icl: not good news at all.

Would be good to know whether this also happens on other platforms, but that
needs someone with access to the CI results filesystem to grep for khungtaskd -
cibuglog ins't good enough.

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