[Bug 74002] New: [un]docking Lenovo W530 results in interrupt storm - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 74002] New: [un]docking Lenovo W530 results in interrupt storm
Date: Thu, 23 Jan 2014 23:38:42 +0000	[thread overview]
Message-ID: <bug-74002-8800@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=74002

          Priority: medium
            Bug ID: 74002
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
           Summary: [un]docking Lenovo W530 results in interrupt storm
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: jcollins-u0TlgVUp4POoiH3BShWgcg@public.gmane.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

Created attachment 92699
  --> https://bugs.freedesktop.org/attachment.cgi?id=92699&action=edit
vbios

Running a 3.13 kernel, built from upstream git repository (commit
d8ec26d7f8287f5788a494f56e8814210f0e64be).

I'm able to consistently generate an ongoing interrupt storm by [un]docking my
Lenovo W530 when using the nouveau driver.  This problem was first noticed
under a 3.10 kernel and associated nouveau driver.  I then switched to the
above 3.13 kernel for the MSI interrupt support and to see if the problem
persisted.

The attached nouveau.interrupts is the output of read_interrupts, the source
for which is here: http://www.darnok.org/xen/read_interrupts.c.  This file
shows the interrupts generated during 5 second intervals.

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