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* [Bug 202537] New: amdgpu/DC failed to reserve new abo buffer before flip
@ 2019-02-09 14:17 bugzilla-daemon
  2019-02-09 14:27 ` [Bug 202537] " bugzilla-daemon
                   ` (22 more replies)
  0 siblings, 23 replies; 24+ messages in thread
From: bugzilla-daemon @ 2019-02-09 14:17 UTC (permalink / raw)
  To: dri-devel

https://bugzilla.kernel.org/show_bug.cgi?id=202537

            Bug ID: 202537
           Summary: amdgpu/DC failed to reserve new abo buffer before flip
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.20
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: linux@bernd-steinhauser.de
        Regression: No

I've been using amdgpu for a long time on my Kaveri (A7800) now and it works
fine.
In the recent kernel versions (I think since 4.15), I've been trying it with
the DC activated and apart from some initial issue with the HDMI connection it
works fine and on 4.19 it's rock-stable.

However, when I tried 4.20 (all versions from 4.20.1 to 4.20.6), I'm
experiencing a regression.
Initially, everything works fine, but at some point especially video-related
things stop working properly.
vaapi seems more affected than vdpau, but at some point they both fail to setup
the hw decoding.
(btw, vdpau for some reason can only run for one video at the time, while vaapi
can do multiple ones, but that's an unrelated issue. It used to be different a
year ago or even earlier on)

I think the problems start when I see a lot of messages like this:
[drm:amdgpu_display_crtc_page_flip_target] *ERROR* failed to reserve new abo
buffer before flip

However, after that I can continue for a bit, possibly with the restriction of
not being able to use vaapi but vdpau.
At some point, the system will fail due to a memory leak, at least the OOM is
starting to kill stuff until it ends up killing the window manager and X11.
Before that I get these messages:
[drm:amdgpu_cs_ioctl] *ERROR* amdgpu_vm_validate_pt_bos() failed.
[drm:amdgpu_cs_ioctl] *ERROR* Not enough memory for command submission!
[drm:amdgpu_cs_ioctl] *ERROR* amdgpu_cs_list_validate(validated) failed.
[drm:amdgpu_cs_ioctl] *ERROR* Not enough memory for command submission!
[drm:amdgpu_cs_ioctl] *ERROR* amdgpu_vm_validate_pt_bos() failed.
[drm:amdgpu_cs_ioctl] *ERROR* Not enough memory for command submission!

--- snip --- (lots of oom activity)

and finally:
[TTM] Out of kernel memory
[TTM] Out of kernel memory
[TTM] Out of kernel memory
[TTM] Out of kernel memory
[TTM] Out of kernel memory
[TTM] Out of kernel memory
[TTM] Out of kernel memory
amdgpu 0000:00:01.0: (-12) failed to allocate kernel bo
[drm:amdgpu_uvd_free_handles] *ERROR* Error destroying UVD -12!

The latter one – I think – actually being the solution to the OOM problem, but
I'm certainly not an expert.

CPU/GPU is:
vendor_id       : AuthenticAMD
cpu family      : 21
model           : 48
model name      : AMD A10-7800 Radeon R7, 12 Compute Cores 4C+8G
stepping        : 1
microcode       : 0x6003106
cpu MHz         : 1592.730
cache size      : 2048 KB

Back to 4.19 for now since that runs beautifully.

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^ permalink raw reply	[flat|nested] 24+ messages in thread
end of thread, other threads:[~2019-02-19 21:00 UTC | newest]

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2019-02-09 14:17 [Bug 202537] New: amdgpu/DC failed to reserve new abo buffer before flip bugzilla-daemon
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