[Bug 92560] New: [GK208] iowrite goes out of bounds on channel close - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 92560] New: [GK208] iowrite goes out of bounds on channel close
Date: Tue, 20 Oct 2015 23:59:06 +0000	[thread overview]
Message-ID: <bug-92560-8800@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=92560

            Bug ID: 92560
           Summary: [GK208] iowrite goes out of bounds on channel close
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Created attachment 119019
  --> https://bugs.freedesktop.org/attachment.cgi?id=119019&action=edit
kernel splat

Not sure if the intel warn plays into things, since it happened from an
interrupt. But it was interrupting a different process. Looks like the buffer
already got unmapped somehow, or we're writing too far into it.

This is with a 4.3-rcN-ish nouveau module (despite the main kernel being 4.0).

Happened when running piglit in parallel (8 threads).

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