From: greg@kroah.com (Greg KH)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Linux module for causing a system hard lock-up
Date: Wed, 8 Jun 2011 15:53:49 -0700 [thread overview]
Message-ID: <20110608225349.GA28108@kroah.com> (raw)
In-Reply-To: <SNT111-DS144545E0C359C12FD7DA3CA7620@phx.gbl>
On Wed, Jun 08, 2011 at 11:24:06PM +0100, limp wrote:
> >Hello,
> >
> >> Could anyone please let me know how can I achieve this?
> >
> >Is hard lockup detector enabled in your system? Could you
> >post your .config.
>
> Hi there,
>
> At the moment I haven't enabled a hard lockup detector (I guess you're
> talking about NMI watchdog, right?) but I am just trying to hard lockup
> Linux using a kernel module. I was expecting the posted module to do that
> but apparently it doesn't (Linux still works great after loading it).
That's because only the thread that loaded the module is stuck, not the
whole system. It continues on just fine, you are going to have to do
more work to bring the whole system down.
greg k-h
next prev parent reply other threads:[~2011-06-08 22:53 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-08 19:27 Linux module for causing a system hard lock-up limp
2011-06-08 20:12 ` Daniel Baluta
2011-06-08 22:24 ` limp
2011-06-08 22:53 ` Jeff Haran
2011-06-08 22:53 ` Greg KH [this message]
2011-06-09 4:28 ` Michael Blizek
2011-06-09 4:46 ` Michael Blizek
2011-06-09 7:06 ` Mulyadi Santosa
2011-06-14 20:23 ` limp
2011-06-14 21:36 ` João Eduardo Luís
2011-06-28 14:35 ` hlist_add_head luca ellero
[not found] ` <BANLkTikb1ungKEJ_WoHOpMG+=-sHcFb5ag@mail.gmail.com>
2011-06-30 9:18 ` hlist_add_head piyush moghe
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