[Nouveau] [Bug 81690] nouveau GPU locks up under memory pressure

[bugzilla-daemon at freedesktop.org]

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

--- Comment #3 from xpue <r9ku1q at gmail.com> ---
Happens for me too, when any program uses 3d, and any other(or same) uses
significant amount of memory and causes swapping.

You can find many similiar bug reports here by searching PAGE_NOT_PRESENT.

Only two messages in dmesg every time that it happens:

nouveau E[   PFIFO][0000:02:00.0] read fault at 0x00065a0000 [PAGE_NOT_PRESENT]
from PGRAPH/GPC0/TEX on channel 0x003fb49000 [chrome[21010]]
nouveau E[   PFIFO][0000:02:00.0] PGRAPH engine fault on channel 5,
recovering...

nouveau E[   PFIFO][0000:02:00.0] read fault at 0x001146e000 [PAGE_NOT_PRESENT]
from PGRAPH/GPC0/PROP on channel 0x003fb49000 [chrome[20217]]
nouveau E[   PFIFO][0000:02:00.0] PGRAPH engine fault on channel 5,
recovering...

nouveau E[   PFIFO][0000:02:00.0] write fault at 0x0000218000
[PAGE_NOT_PRESENT] from PGRAPH/DISPATCH on channel 0x003fb49000 [Xorg[79]]
nouveau E[   PFIFO][0000:02:00.0] PGRAPH engine fault on channel 5,
recovering...

nouveau E[   PFIFO][0000:02:00.0] read fault at 0x001583a000 [PAGE_NOT_PRESENT]
from PGRAPH/GPC0/UNK07 on channel 0x003fb49000 [Xorg[79]]
nouveau E[   PFIFO][0000:02:00.0] PGRAPH engine fault on channel 5,
recovering...

nouveau E[   PFIFO][0000:02:00.0] read fault at 0x0008c14000 [PAGE_NOT_PRESENT]
from PGRAPH/GPC0/PROP on channel 0x003fb49000 [Xorg[81]]
nouveau E[   PFIFO][0000:02:00.0] PGRAPH engine fault on channel 5,
recovering...

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