[Nouveau] [Bug 74492] v3.13-rc8 nv4e + msi = random lockups

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74492

--- Comment #3 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Yes, probably the same thing as that bug, although unfortunately the bug filer
from #73445 never responded to my suggestion.

Definitely sounds like something IRQ-ish is going bad. I think the ultimate
resolution will be to just disable MSI on nv4e, but if you don't mind, could
you attach the output of

# lspci -vvvnn
# cat /proc/interrupts

(Run as root -- well, really just the lspci bit needs root.)

for both the NvMSI=0 case as well as the default case. Even more ideally, do
this when the corruption begins (for when MSI is enabled). Also, can you attach
a dmesg of a boot without NvMSI=0? Do you see funny interrupt errors in dmesg
(like "irq 16 nobody cared" sort of thing)?

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