Date: Fri, 17 Aug 2012 10:56:44 +0800
From: Fengguang Wu <fengguang.wu@intel.com>
To: Ming Lei <tom.leiming@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Cornelia Huck <cornelia.huck@de.ibm.com>, devel@driverdev.osuosl.org,
        Kay Sievers <kay.sievers@vrfy.org>,
        Alan Stern <stern@rowland.harvard.edu>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: show_uevent() and general protection fault
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 <20120816172711.GB27415@kroah.com>
 <20120817020608.GA24538@localhost>
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 <CACVXFVPL4HON7Ec7SxGLgBDJtJExTJihc1cfVQt05WukU54AEQ@mail.gmail.com>
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On Fri, Aug 17, 2012 at 10:44:37AM +0800, Ming Lei wrote:
> On Fri, Aug 17, 2012 at 10:29 AM, Fengguang Wu <fengguang.wu@intel.com> wrote:
> 
> >
> > Something obviously wrong here:
> >
> >         env->buflen == 12
> >         env->envp_idx == 1627389952
> >         env->env[0] == NULL
> >
> > I'm not sure where it comes from, but if it's possible for random
> 
> Maybe you can print out the device name by dev_err in show_uevent
> under the situation.

Here it is:

[   68.721580] pci_link PNP0C0F:03: uevent 13 env[1627389952]: PNP0C0F:03/.../PNP0C0F:03

dev_err(dev, "uevent %d env[%d]: %s/.../%s\n", env->buflen, env->envp_idx, top_kobj->name, dev->kobj.name);

Thanks,
Fengguang
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