Re: [PATCH 02/12] VMCI: datagram implementation.

From: Greg KH
Date: Thu Nov 15 2012 - 18:47:05 EST


On Wed, Nov 07, 2012 at 10:41:26AM -0800, George Zhang wrote:
> +/*
> + * Create a datagram entry given a handle pointer.
> + */
> +static int dg_create_handle(u32 resource_id,
> + u32 flags,
> + u32 priv_flags,
> + vmci_datagram_recv_cb recv_cb,
> + void *client_data, struct vmci_handle *out_handle)
> +{
> + int result;
> + u32 context_id;
> + struct vmci_handle handle;
> + struct datagram_entry *entry;
> +
> + BUG_ON(!recv_cb);
> + BUG_ON(!out_handle);
> + BUG_ON(priv_flags & ~VMCI_PRIVILEGE_ALL_FLAGS);

Given that this is a static function, there's no need for these
"asserts", right? Please send a follow-on patch removing all BUG_ON()
calls from these files, it's not acceptable to crash a user's box from a
driver that is handling parameters _you_ are feeding it.

thanks,

greg k-h
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