Re: 2.6.25-rc8-mm2 -- initcall acpi_init+0x0/0x216() returned withpreemption imbalance

[Andrew Morton]

On Fri, 11 Apr 2008 15:41:17 -0400 "Miles Lane" <miles.lane@xxxxxxxxx> wrote:

> Is this indicative of a kernel or hardware problem?
> 
> [    0.279606] ACPI: Using IOAPIC for interrupt routing
> [    0.279789] initcall acpi_init+0x0/0x216() returned with preemption imbalance
> [    0.330789] ACPI: PCI Root Bridge [PCI0] (0000:00)
> 

That's a software bug.  Something under acpi_init() has mismatched
preempt_disable/preempt_enable or mismatched spin_lock/spin_unlock, etc.

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