Messages in this thread | | | Date | Wed, 23 Dec 2009 08:58:00 +1100 | From | Nigel Cunningham <> | Subject | Re: WARN_ON at line 380 in kernel/smp.c under 2.6.32.2 + TuxOnIce + KDB |
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Hi.
Peter Zijlstra wrote: > On Tue, 2009-12-22 at 19:16 +0000, Pedro Ribeiro wrote: >> On Tue, Dec 22, 2009 at 5:20 PM, Peter Zijlstra <peterz@infradead.org> wrote: > >>> If you'd enable frame pointers the strack traces would be clearer, but >>> it looks like a bug in tux on ice, doing kmap_high() with IRQs disabled >>> or something like that. > >> I enabled frame pointers, is this more useful? >> http://img684.imageshack.us/img684/5118/dsc01206m.jpg >> http://img96.imageshack.us/img96/5493/dsc01207k.jpg >> http://img33.imageshack.us/img33/7470/dsc01208lp.jpg > > Those read more clearly indeed, thanks! > > It really looks like what I said above, in that tux on ice is calling > kmap() from an inappropriate context.
Ah, I know now what's going on now. You're right. In working around a reported problem, I've triggered the warning. I'll give it some more consideration.
Nigel
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