[Bug 99385] New: Nouveau produces soft lockups - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 99385] New: Nouveau produces soft lockups
Date: Thu, 12 Jan 2017 15:33:00 +0000	[thread overview]
Message-ID: <bug-99385-8800@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=99385

            Bug ID: 99385
           Summary: Nouveau produces soft lockups
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: celelibi-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Created attachment 128914
  --> https://bugs.freedesktop.org/attachment.cgi?id=128914&action=edit
dmesg log from boot to bug

Nouveau driver seems to produce soft lockups.

The most notable effect is that some syscalls "hangs", the whole system become
very slow and this kind f message appear in every terminals:

NMI watchdog: BUG: soft lockup - CPU#6 stuck for 23s! [kworker/6:2:324]

This seems related to power management, since adding the option runpm=0 doesn't
produce the lockups. This bug can be triggered by many things, including
running commands like lspci.

I attach the dmesg log from boot up to the bug.

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