[Nouveau] [Bug 105884] [GP106] Firefox causes a crash / X lockup in the nouveau driver on GTX 1060

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105884

Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Firefox causes a crash / X  |[GP106] Firefox causes a
                   |lockup in the nouveau       |crash / X lockup in the
                   |driver on GTX 1060          |nouveau driver on GTX 1060

--- Comment #4 from Ilia Mirkin <imirkin at alum.mit.edu> ---
4.15 had a number of things added to it.

One thing is using hugepages in ttm, which a lot of people have reported issues
with. Try disabling CONFIG_SWIOTLB (not really needed on modern hw, afaik).

Also nouveau's vm got a rewrite. Some fixes needed to be applied, I think
they're all in 4.16, not as sure about 4.15.x.

The start of your errors is

[ 7661.417755] nouveau 0000:01:00.0: fifo: PBDMA0: 00040000 [PBENTRY] ch 7
[017f3cc000 firefox[19007]] subc 0 mthd 0000 data 00000000
[ 7661.417774] nouveau 0000:01:00.0: gr: TRAP ch 7 [017f3cc000 firefox[19007]]
[ 7661.417780] nouveau 0000:01:00.0: gr: DISPATCH 80000002
[CLASS_SUBCH_MISMATCH]
[ 7661.417793] nouveau 0000:01:00.0: fifo: PBDMA0: 00200000 [METHOD] ch 7
[017f3cc000 firefox[19007]] subc 0 mthd 000c data 88888888

which doesn't look extremely familiar. "FIFO is confused", after which
everything goes downhill pretty fast.

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