(In reply to Michel Dänzer from comment #182)
> Can you bisect which commit in 3.18-rc2 fixed it for you?

Sorry, I do not know how to do it. But these are the changes between RC1 (still
crashing) and RC2 (stable):

 drm/radeon: reduce sparse false positive warnings
 Revert "drm/radeon: drop btc_get_max_clock_from_voltage_dependency_table"
 Revert "drm/radeon/dpm: drop clk/voltage dependency filters for SI"
 drm/radeon: initialize sadb to NULL in the audio code
 drm/radeon: fix speaker allocation setup
 drm/radeon: use gart memory for DMA ring tests
 drm/radeon: fix vm page table block size calculation

I am not an expert, but probably: drm/radeon: use gart memory for DMA ring
tests; could be the good commit.

(In reply to Aaron B from comment #183)
> 3.18 is still crashing for me, I doubt it is fixed.

rc2 crashed for you? After 24 hours I am still stable.