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

From: Li Zefan
Date: Wed Mar 24 2010 - 01:51:09 EST


Anyone have a look at this bug ?

Li Zefan wrote:
> An idea came to me that running perf-sched with a fork "bomb" might
> reveal some bug.
>
> So I wrote a program (attached), and did the following test:
>
> # gcc fork.c
> # ./a.out &
> # perf sched record
>
> After a few seconds, the machine froze, without printing any message.
>
> I've tried the test both on v2.6.34-rc1 and v2.6.34-rc1-tip+.
>
> I'll send you any other information you need.

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