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    SubjectRe: compositing broken in -next (idr bug)
    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.

    --
    tejun


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