Messages in this thread | | | Date | Mon, 02 Nov 2009 22:02:43 -0500 (EST) | From | Len Brown <> | Subject | Re: scheduling while atomic acpi_idle_enter_bm |
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> > 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?
Please test the patches in this bug report: http://bugzilla.kernel.org/show_bug.cgi?id=14101
thanks, Len Brown, Intel Open Source Technology Center
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