[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 #9 from Martin von Gagern <Martin.vGagern at gmx.net> ---
(In reply to comment #8)
> Right you are! Method = 0x40.

Glad my comment was not completely useless… :)

> So... the mystery is where does this 0x40 method come from.

Can we add a bit of debug code somewhere, to detect that specific value when it
enters the ring, and emit useful information like a kernel stack trace? I don't
mind recompiling my kernel to test stuff, and it seems chances of reproducing
this are surprisingly high, but I haven't written any kernel code myself so
far.

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