On 06/12/2007 11:02 AM, Stephane Eranian wrote:
> * allocate_msrs() allocates two tables per CPU. One for the
> counters, the other for the eventsel registers. But then
> nmi_setup() copies the cpu_msrs[0] into cpu_msrs[] of all
> other cpus. This operation overrides the cpu_msrs[].counters
> and cpu_msrs[].controls pointers for all CPUs but CPU0.
> But free_msrs() will free the same tables multiple times. This
> causes a kernel dump when you enable certain kernel debugging
> features. The fix is to copy the content of the counters and
> controls array, not the pointers.
>
How old is the kernel you are looking at?
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0939c17c7bcf1c838bea4445b80a6966809a438f
...fixed this over 10 days ago.
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