I can easily trigger an endless stream of the following three lines

[drm:radeon_cp_idle] *ERROR* radeon_cp_idle called without lock held,
held  0 owner eb0908c0 eb0908c0
[drm:radeon_cp_reset] *ERROR* radeon_cp_reset called without lock held,
held  0 owner eb0908c0 eb0908c0
[drm:radeon_cp_start] *ERROR* radeon_cp_start called without lock held,
held  0 owner eb0908c0 eb0908c0

and thereby also lock my system completely up.

I did not dig into this problem, except for applying the attached patch
in order to get some more info and BUG_ON after the first round of
errors, so that sysRq remained usable and I could produce a bunch of
extra data in the dmesg.

Attached is also my config and the output of `lspci -vv' and `dmesg'.

Any ideas?


Simon Holm Thøgersen