From mboxrd@z Thu Jan  1 00:00:00 1970
From: Greg KH <gregkh@linuxfoundation.org>
Subject: Re: [PATCH 05/12] VMCI: event handling implementation.
Date: Mon, 29 Oct 2012 19:24:46 -0700
Message-ID: <20121030022446.GF1920@kroah.com>
References: <20121030005923.17788.21797.stgit@promb-2n-dhcp175.eng.vmware.com>
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To: George Zhang <georgezhang@vmware.com>
Cc: pv-drivers@vmware.com, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org
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On Mon, Oct 29, 2012 at 06:04:27PM -0700, George Zhang wrote:
> +/*
> + * Releases the given VMCISubscription.
> + * Fires the destroy event if the reference count has gone to zero.
> + */
> +static void event_release(struct vmci_subscription *entry)
> +{
> +	kref_put(&entry->kref, event_signal_destroy);
> +}

Same question as before with the kref_put() call, what is handling the
locking here?  It looks like a race to me.

thanks,

greg k-h