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由 Markus Metzger 提交于
Fix an invalid memory reference problem when cpu hotplug support is disabled and the hw-branch-tracer is set as current tracer. Initializing the tracer calls bts_trace_init() which has already been freed at this time. Reported-by: NFrederic Weisbecker <fweisbec@gmail.com> Signed-off-by: NMarkus Metzger <markus.t.metzger@intel.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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