perf, x86: Fix silly bug in data store buffer allocation
authorPeter Zijlstra <a.p.zijlstra@chello.nl>
Fri, 5 Mar 2010 11:09:29 +0000 (12:09 +0100)
committerIngo Molnar <mingo@elte.hu>
Wed, 10 Mar 2010 12:23:34 +0000 (13:23 +0100)
Fix up the ds allocation error path, where we could free @buffer before
we used it.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: paulus@samba.org
Cc: eranian@google.com
Cc: robert.richter@amd.com
Cc: fweisbec@gmail.com
LKML-Reference: <20100305154128.813452402@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/cpu/perf_event_intel_ds.c

index 72453ac5fb7d711413ca31b0ffa420aeb39c650e..a67fff14475e1e28d515f9864cb73ccdc41c777a 100644 (file)
@@ -127,10 +127,8 @@ static int reserve_ds_buffers(void)
 
                err = -ENOMEM;
                ds = kzalloc(sizeof(*ds), GFP_KERNEL);
-               if (unlikely(!ds)) {
-                       kfree(buffer);
+               if (unlikely(!ds))
                        break;
-               }
                per_cpu(cpu_hw_events, cpu).ds = ds;
 
                if (x86_pmu.bts) {