linux-kernel - Re: [drm:dm_plane_helper_prepare_fb [amdgpu]] *ERROR* Failed to pin framebuffer with error -12

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Message-ID: <CAKMK7uHhpEUXmJCS8=EzxYmT0R1UUF-RCRWx0guFKZo0JKTHhw@mail.gmail.com>
Date:   Thu, 14 Jan 2021 15:06:23 +0100
From:   Daniel Vetter <daniel@...ll.ch>
To:     Christian König <christian.koenig@....com>
Cc:     Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>,
        "Deucher, Alexander" <alexander.deucher@....com>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Linux List Kernel Mailing <linux-kernel@...r.kernel.org>
Subject: Re: [drm:dm_plane_helper_prepare_fb [amdgpu]] *ERROR* Failed to pin
 framebuffer with error -12

On Thu, Jan 14, 2021 at 2:56 PM Christian König
<christian.koenig@....com> wrote:
>
> Am 14.01.21 um 01:22 schrieb Mikhail Gavrilov:
> > On Tue, 12 Jan 2021 at 01:45, Christian König <christian.koenig@....com> wrote:
> >> But what you have in your logs so far are only unrelated symptoms, the
> >> root of the problem is that somebody is leaking memory.
> >>
> >> What you could do as well is to try to enable kmemleak
> > I captured some memleaks.
> > Do they contain any useful information?
>
> Unfortunately not of hand.
>
> I also don't see any bug reports from other people and can't reproduce
> the last backtrace you send out TTM here.
>
> Do you have any local modifications or special setup in your system?
> Like bpf scripts or something like that?

There's another bug report (for rcar-du, bisected to the a switch to
use more cma helpers) about leaking mmaps, which keeps too many fb
alive, so maybe we have gained a refcount leak somewhere recently. But
could also be totally unrelated.
-Daniel


>
> Christian.
>
> >
> > [1] https://pastebin.com/n0FE7Hsu
> > [2] https://pastebin.com/MUX55L1k
> > [3] https://pastebin.com/a3FT7DVG
> > [4] https://pastebin.com/1ALvJKz7
> >
> > --
> > Best Regards,
> > Mike Gavrilov.
> > _______________________________________________
> > amd-gfx mailing list
> > amd-gfx@...ts.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/amd-gfx
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel


-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

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