Messages in this thread | | | Date | Tue, 6 Nov 2012 11:42:15 -0500 | From | Dave Jones <> | Subject | Re: tty, vt: lockdep warnings |
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On Tue, Nov 06, 2012 at 04:11:00PM +0000, Alan Cox wrote:
> > But a deadlock we have lived with for years. Without reverting, > > we're prevented from discovering all the new deadlocks we're adding. > > We lived with it locking boxes up on users but not knowing why.
Circa 3.5 we got a lot more reports of this happening too for some reason. Turns out that races are awfully resistant to bisecting too.
> The root > cause is loading two different framebuffers with one taking over from > another - that should be an obscure corner case and once the fuzz testing > can avoid. > > I had a semi-informed poke at this and came up with a possible patch (not very tested)
If this fixes the real problems we've been seeing, I'll dance a jig. Dave
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