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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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