Re: [BUG] perf: hard lockup when using perf-sched

[Li Zefan]

> This seems to work, in contrast to everything I tried yesterday.  Not
> exactly a thing of beauty, but at least it's an option, so...
> 
> perf: fix perf sched record forkbomb deadlock
> 
> perf sched record can deadlock a box should the holder of handle->data->lock
> take an interrupt, and then attempt to acquire an rq lock held by a CPU trying
> to acquire the same lock.  Disable interrupts.
> 

This patch fixes the lockup on my box. Thanks!

> Signed-off-by: Mike Galbraith <efault@xxxxxx>
> Cc: Ingo Molnar <mingo@xxxxxxx>
> Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
> Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
> Reported-by: Li Zefan <lizf@xxxxxxxxxxxxxx>
> LKML-Reference: <new-submission>
> 
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