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    Subject[PATCH] perf_event: fix perf_swevent_hrtimer()
    fix:
    [<c0477471>] ? printk+0x1d/0x24
    [<c01c98f9>] ? perf_prepare_sample+0x269/0x280
    [<c0149231>] warn_slowpath_common+0x71/0xd0
    [<c01c98f9>] ? perf_prepare_sample+0x269/0x280
    [<c01492aa>] warn_slowpath_null+0x1a/0x20
    [<c01c98f9>] perf_prepare_sample+0x269/0x280
    [<c016e9f3>] ? cpu_clock+0x53/0x90
    [<c01cc368>] __perf_event_overflow+0x2a8/0x300
    [<c01ccc3b>] perf_event_overflow+0x1b/0x30
    [<c01ccccf>] perf_swevent_hrtimer+0x7f/0x120

    This is because 'data' variable not initialize.

    Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
    ---
    kernel/perf_event.c | 2 +-
    1 files changed, 1 insertions(+), 1 deletions(-)

    diff --git a/kernel/perf_event.c b/kernel/perf_event.c
    index 0bd0f67..41c2dde 100644
    --- a/kernel/perf_event.c
    +++ b/kernel/perf_event.c
    @@ -4009,7 +4009,7 @@ static enum hrtimer_restart perf_swevent_hrtimer(struct hrtimer *hrtimer)
    event = container_of(hrtimer, struct perf_event, hw.hrtimer);
    event->pmu->read(event);

    - data.addr = 0;
    + memset(&data, 0, sizeof(data));
    data.period = event->hw.last_period;
    regs = get_irq_regs();
    /*
    --
    1.6.1.2


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