How to fix "BUG spinlock recursion on CPU #0"

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	Hello,

I have built a 2.6.22-rc7 on sparc32/smp to debug kernel. The only error I see is "BUG spinlock recursion" with call trace. How debug this mistake ? How can I find information about spinlock debugging ?

I have tried to boot with the same kernel and maxcpu=1 option but this box ever boots with two CPU's online. How can I force this kernel to boot with only one CPU ? Does MAXCPU variable only work on i386 ?

	Regards,

	JKB
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