From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
Subject: [Bug 14941] New: ioremap leak in DRM
Date: Mon, 10 Mar 2008 11:15:36 -0700 (PDT)
Message-ID: <bug-14941-8800@http.bugs.freedesktop.org/>
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http://bugs.freedesktop.org/show_bug.cgi?id=14941

           Summary: ioremap leak in DRM
           Product: xorg
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: minor
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
        ReportedBy: pq-X3B1VOXEql0@public.gmane.org
         QAContact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org


Nouveau is leaking one ioremap per X start. Apparently it is the kernel fifo,
since it always mapped from the beginning of VRAM, and has size 0x8000 or 32kB.

My hardware is NV20 (gf3). DRM and DDX from git around 9th March.

I found this while mmiotracing nouveau. I start the trace, load drm.ko and
nouveau.ko, start X three times in a row, unload nouveau.ko and drm.ko. Now
when I stop mmiotracing, it reports three non-unmapped io-mappings as described
above.


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