Messages in this thread | | | From | "Luis R. Rodriguez" <> | Date | Mon, 2 Nov 2009 19:09:30 -0800 | Subject | Re: scheduling while atomic acpi_idle_enter_bm |
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On Mon, Nov 2, 2009 at 7:02 PM, Len Brown <lenb@kernel.org> wrote: >> > I get this when modprobing some module I am working on. I figured it >> > was the module's fault but the EIP points to something else so I am >> > not sure. I get the following repeating about 4 times on 2.6.32-rc5: >> >> >> you can get this if your own code leaves interrupts disabled in a >> kernel thread and then lets the cpu go idle... > > Unclear. > > acpi_enter_idle_bm() assumes that it is entered with irqs enabled, > and so it we unconditionally disables IRQs. > > Then we unconditionally re-enable them. > > The problem seems to be that right after we enable them, > we find that they are actually disabled, perhaps as > a side-effect of SMM. > > Is your machine a Dell, per chance?
Nope.
> Please test the patches in this bug report: > http://bugzilla.kernel.org/show_bug.cgi?id=14101
In my case it was as Arjan pointed out and I've fixed it in my driver. Sorry for not reporting back and thanks for your review.
Luis
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