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SubjectRe: [PATCH] perf: Fix tear-down of inherited group events
On Tue, 15 Mar 2011, Peter Zijlstra wrote:

> Subject: perf: Fix tear-down of inherited group events
> From: Peter Zijlstra <>
> Date: Tue Mar 15 14:37:10 CET 2011
> When destroying inherited events, we need to destroy groups too,
> otherwise the event iteration in perf_event_exit_task_context() will
> miss group siblings and we leak events with all the consequences.

Thanks for the fix! I can verify that when applied against current
linus-git kernel that my original test case no longer leaks memory.

I've also run the full PAPI regression tests, plus the BLAS/PAPI benchmark
code that originally showed the problem and everything checks out fine.

It's a shame this fix didn't make it in before 2.6.38.

Tested-by: Vince Weaver <>


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