Hotplug on PPC4xx

Sean MacLennan smaclennan at
Wed Apr 8 09:27:28 EST 2009

On Mon, 6 Apr 2009 18:20:23 -0400
"Sean MacLennan" <sean.maclennan at> wrote:

> I am trying to run the /sbin/hotplug from the kernel and it doesn't
> work. Has anybody got it running?

I looked into it some more. It turns out that the env pointers are
freed before they are copied.

In kobject_uevent_env() if I change the line that calls the helper from
UMH_NO_WAIT to UMH_WAIT_EXEC, then it works... but probably at a loss
of performance.

		retval = call_usermodehelper(argv[0], argv,
					     env->envp, UMH_WAIT_EXEC);

Any other ideas?


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