[Nouveau] [Bug 70390] [NV84] Repeated system crashes under graphics load, E[PFIFO] DMA_PUSHER and lots of E[PGRAPH]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70390

--- Comment #18 from Martin von Gagern <Martin.vGagern at gmx.net> ---
Had some third party module incompatibilities with 3.13, but after finding
suitable patches, I now upgraded to 3.13.6 and things look well so far. Which
is to say, flightgear started several times without a single crash so far.
Still see some lines about nouveau in dmesg, but haven't detected any adverse
consequences so far. Nevertheless, here are the lines in question:

[25251.856093] nouveau E[   PFIFO][0000:01:00.0] DMA_PUSHER - ch 2 [X[2974]]
get 0x00200111e4 put 0x0020011204 ib_get 0x000002e8 ib_put 0x0000035d state
0x80004861 (err: INVALID_CMD) push 0x00406040
[28962.591861] nouveau E[   PFIFO][0000:01:00.0] DMA_PUSHER - ch 2 [X[2974]]
get 0x0020027e98 put 0x0020028470 ib_get 0x00000185 ib_put 0x000001ab state
0xc000ef05 (err: MEM_FAULT) push 0x00406040
[28962.592096] nouveau E[     PFB][0000:01:00.0] trapped read at 0xfffffffffc
on channel 0x0000fcb0 [unknown] PFIFO/PFIFO_READ/PUSHBUF reason: PT_NOT_PRESENT

So the first line, the INVALID_CMD, is still there occasionally. At least once
in my current session.

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