Messages in this thread | | | Date | Sun, 30 Sep 2007 09:20:56 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH] fix console change race exposed by CFS |
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* Jan Luebbe <jluebbe@lasnet.de> wrote:
> From: Jan Lübbe <jluebbe@lasnet.de> > > The new behaviour of CFS exposes a race which occurs if a switch is > requested when vt_mode.mode is VT_PROCESS. > > The process with vc->vt_pid is signaled before vc->vt_newvt is set. This > causes the switch to fail when triggered by the monitoing process > because the target is still -1. > > Signed-off-by: Jan Lübbe <jluebbe@lasnet.de>
nifty! I'm wondering what the symptoms of this bug were - how did you notice it? Also, i'm wondering how you managed to debug this - looks quite hard to trigger this race, right?
Acked-by: Ingo Molnar <mingo@elte.hu>
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