The bug was already traced by me to "sched: fix fair sleepers" (which you list as well), and this was reverted just before the final 2.6.25 release.I have been running v2.6.25 for about a day now, and afaics the issue is gone.
Can you confirm that the issue is fixed for you as well with v2.6.25?
Unfortunately most of the communication about this was done by private mails, although I did update the bugzilla entry and replied to theI didn't know there was an entry for this in bugzilla, thanks for sharing. Must have missed the notice on lkml.
"regressions" mails from Rafael. It's a pity if this has caused you unnecessary work.
Note that Ingo has just resubmitted the (probably same) patch for 2.6.26 [1], so we're not done with this yet.
Cheers,
FJP
[1] http://lkml.org/lkml/2008/4/19/166 (see also my reply)