[Bug 81690] nouveau GPU locks up under memory pressure

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81690

--- Comment #1 from sven <sven.pilz+freedesktop at gmail.com> ---
I also have memory related problems when loading big textures.

When I try to use a ~717MB sized OpenGL 2D texture array, I get the following
to the application's stderr (or stdout, haven't checked):

> nouveau: kernel rejected pushbuf: Device or resource busy
> nouveau: ch0: krec 0 pushes 1 bufs 10 relocs 0
> nouveau: ch0: buf 00000000 00000003 00000004 00000004 00000000
> nouveau: ch0: buf 00000001 00000010 00000002 00000000 00000002
> nouveau: ch0: buf 00000002 00000008 00000002 00000000 00000002
> nouveau: ch0: buf 00000003 00000013 00000002 00000002 00000002
> nouveau: ch0: buf 00000004 00000019 00000002 00000002 00000000
> nouveau: ch0: buf 00000005 00000011 00000002 00000000 00000002
> nouveau: ch0: buf 00000006 00000012 00000002 00000000 00000002
> nouveau: ch0: buf 00000007 00000015 00000002 00000002 00000000
> nouveau: ch0: buf 00000008 00000017 00000002 00000002 00000000
> nouveau: ch0: buf 00000009 00000014 00000002 00000000 00000002
> nouveau: ch0: psh 00000000 000004e6fc 000004eef4

And the kernel log reads:
> [   12.849796] nouveau  [  DEVICE][0000:01:00.0] Chipset: GF119 (NVD9)
> [   12.849800] nouveau  [  DEVICE][0000:01:00.0] Family : NVD0
> [   13.584920] nouveau  [     PFB][0000:01:00.0] RAM size: 1024 MiB
...
> [  328.496640] nouveau W[   PFIFO][0000:01:00.0] INTR 0x00000001: 0x00000000
> [  328.496652] nouveau E[   PFIFO][0000:01:00.0] INTR 0x08800000
> [  328.496689] nouveau E[    PBUS][0000:01:00.0] MMIO read of 0x00000000 FAULT at 0x002100 [ !ENGINE ]
> [  340.851380] nouveau E[   PFIFO][0000:01:00.0] read fault at 0x003a330000 [PAGE_NOT_PRESENT] from PGRAPH/DISPATCH on channel 0x003fb4e000 [DummyName[1554]]
> [  340.851386] nouveau E[   PFIFO][0000:01:00.0] PGRAPH engine fault on channel 3, recovering...
> [  344.331776] nouveau E[DummyName[1554]] nv50cal_space: -16
> [  344.438226] nouveau E[DummyName[1554]] nv50cal_space: -16
> [  344.544699] nouveau E[DummyName[1554]] nv50cal_space: -16
> [  344.650491] nouveau E[DummyName[1554]] nv50cal_space: -16
> [  344.756217] nouveau E[DummyName[1554]] nv50cal_space: -16
> [  344.861902] nouveau E[DummyName[1554]] nv50cal_space: -16
> [  344.969239] nouveau E[DummyName[1554]] nv50cal_space: -16
> [  345.076069] nouveau E[DummyName[1554]] nv50cal_space: -16
> [  345.183105] nouveau E[DummyName[1554]] nv50cal_space: -16
> [  345.290630] nouveau E[DummyName[1554]] nv50cal_space: -16
> [  345.398302] nouveau E[DummyName[1554]] nv50cal_space: -16
> [  360.409590] nouveau E[DummyName[1554]] failed to idle channel 0xcccc0000 [DummyName[1554]]
> [  360.512756] nouveau E[DummyName[1554]] failed to idle channel 0xcccc0000 [DummyName[1554]]

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