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SubjectRe: 2.6.25-rc8-mm2 -- initcall acpi_init+0x0/0x216() returned with preemption imbalance
On Fri, 11 Apr 2008 15:41:17 -0400 "Miles Lane" <miles.lane@gmail.com> 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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