linux-kernel - Re: 3.13.5 : rm -rf running forever, one cpu at approx 100%

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Date:	Thu, 27 Feb 2014 03:45:35 +0000
From:	Ken Moffat <zarniwhoop@...world.com>
To:	Mike Galbraith <bitbucket@...ine.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: 3.13.5 : rm -rf running forever, one cpu at approx 100%

On Thu, Feb 27, 2014 at 04:26:35AM +0100, Mike Galbraith wrote:
> 
> I would start with strace to see if a task is looping in userspace, then
> move on to perf top -g -p <pid> (or perf record/report) to peek at what
> it's up to in the kernel.  Once you have the where, trace_printk() is
> the best thing since sliced bread (which ranks just below printk()).
> 
> -Mike
 Thanks.  I'll need to build perf.

ĸen
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