[Bug 108696] New: [ICL] Deadlock in the code prevents system boot.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108696

            Bug ID: 108696
           Summary: [ICL] Deadlock in the code prevents system boot.
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: blocker
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: radhakrishna.sripada at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 142410
  --> https://bugs.freedesktop.org/attachment.cgi?id=142410&action=edit
Serial Logs

System does not boot with drm-tip 4.20.0rc1 kernel.
Top Commits: 
23c1138030ad drm-tip: 2018y-11m-07d-21h-25m-23s UTC integration manifest
39dd2b2ee339 Merge remote-tracking branch 'drm-intel/topic/core-for-CI' into
drm-tip
5d6746951b52 Merge remote-tracking branch 'sound-upstream/for-next' into
drm-tip
a7832f39ca4c Merge remote-tracking branch 'sound-upstream/for-linus' into
drm-tip
9f0a672b8202 Merge remote-tracking branch 'drm-intel/drm-intel-next-queued'
into drm-tip
9937ab3a0a78 Merge remote-tracking branch 'drm-misc/drm-misc-next' into drm-tip
eae1071afd1d Merge remote-tracking branch 'drm-intel/drm-intel-fixes' into
drm-tip
8f4ceaee36c1 Merge remote-tracking branch 'drm-misc/drm-misc-fixes' into
drm-tip
cf3d02a185ed drm: Fix htmldocs warnings in drm_fourcc.c
a33e1ece7779 drm/i915/icl: Fix power well 2 wrt. DC-off toggling order
9a64c65083b9 drm/i915: Add short HPD IRQ storm detection for non-MST systems
0759af9e75ca drm/i915: Clarify flow for disabling IRQs on storms
a4af7889eb31 drm/i915: Fix threshold check in intel_hpd_irq_storm_detect()
fee61deecb1d drm/i915: Fix NULL deref when re-enabling HPD IRQs on systems with
MST
66a5ab1034be drm/i915: Fix possible race in intel_dp_add_mst_connector()
d0105af93976 drm/i915: Clean up skl_program_scaler()


Please find attached Logs captured from Serial console.

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