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In-Reply-To: <20100126105640.6bf9488c@marrow.netinsight.se>
References: <20100126105640.6bf9488c@marrow.netinsight.se>
Date: Tue, 26 Jan 2010 18:08:28 +0800
Message-ID: <2375c9f91001260208t31379702tb49cb57d12d5890b@mail.gmail.com>
Subject: Re: [PATCH] Provide ways of crashing the kernel through debugfs
From: =?UTF-8?Q?Am=C3=A9rico_Wang?= <xiyou.wangcong@gmail.com>
To: Simon Kagstrom <simon.kagstrom@netinsight.net>
Cc: linux-kernel@vger.kernel.org, David Woodhouse <dwmw2@infradead.org>,
       Artem Bityutskiy <dedekind1@gmail.com>, Ingo Molnar <mingo@elte.hu>
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On Tue, Jan 26, 2010 at 5:56 PM, Simon Kagstrom
<simon.kagstrom@netinsight.net> wrote:
> For development and testing it's sometimes useful to crash or injure the
> kernel in various ways. This patch adds a debugfs interface to provoke
> null-pointer dereferences, stack corruption, panics, bugons etc. For
> example:
>
>  mount -t debugfs debugfs /mnt
>  echo 1 > /mnt/provoke-crash/null_dereference
>
> Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net>
> ---
> Obviously this feature is for debugging and testing only, and of
> interest to fairly few people. I've used it for testing the kmsg_dump
> stuff (hence the CC:s above) and kdump, and have found it fairly useful.
>
> If it's not of interest, at least this mail will be in the archives if
> someone else needs something like it :-)
>

Hey, we already have /proc/sysrq-trigger, you need to state why
it is better than using /proc/sysrq-trigger.

Thanks.
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