Hello, Jiri.
On Tue, Feb 12, 2013 at 10:55:37PM +0100, Jiri Slaby wrote:
this commit in -next causes my KDE to get stuck while starting. I see only the splash screen. If I disable effects by alt-shift-f12, it continues.
I bisected it to this commit: commit 430440fce7da4ad52c2af06a04a5132e5d19faaf Author: Tejun Heo tj@kernel.org Date: Thu Feb 7 12:31:37 2013 +1100
drm: convert to idr_alloc()More concretely to the change in drm_gem_flink_ioctl. If I revert solely that one, it works again. Maybe I'm blind, but I do not see why...
Well I see a bug in there, but that is not the root cause -- there is a missing call to idr_preload_end. Of course, that one only leaves preemption disabled forever.
Fix for this bug is already queued in -mm.
http://article.gmane.org/gmane.linux.kernel/1439101/raw
But you're saying that adding the missing idr_preload_end() doesn't make the problem go away, right?
Thanks.