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Date: Sun, 19 Jan 2014 19:48:56 -0800 (PST) From: David Miller <davem@...emloft.net> To: jasowang@...hat.com Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, mst@...hat.com Subject: Re: [PATCH net] tun: handle copy failure in tun_put_user() From: Jason Wang <jasowang@...hat.com> Date: Mon, 20 Jan 2014 11:16:48 +0800 > This patch return the error code of copy helpers in tun_put_user() instead of > ignoring them. > > Cc: Michael S. Tsirkin <mst@...hat.com> > Signed-off-by: Jason Wang <jasowang@...hat.com> If you perform some of the copy successfully, you have to report that length rather than just an error. Otherwise userland has no way to determine how much of the data was successfully sourced. I'm not applying this, sorry. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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