Re: [PATCH] call_usermodehelper hang

From: Greg KH
Date: Fri Apr 09 2004 - 15:58:08 EST


On Fri, Apr 09, 2004 at 03:42:56PM -0500, Brian King wrote:
> Would you prefer a fix in call_usermodehelper itself? It could certainly
> be argued that calling call_usermodehelper with wait=0 should be allowed
> even when holding locks. Although, fixing it here is less obvious to me
> how to do because of the arguments to call_usermodehelper. I would imagine
> it would consist of creating a kernel_thread to preserve the caller's stack.

Yes, I think call_usermodehelper should be changed to create a new
kernel thread for every call. That would solve this problem, and any
future races that might happen. Care to work on that?

thanks,

greg k-h
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