Date:   Tue, 2 Apr 2019 22:55:37 +0300
From:   Dan Carpenter <dan.carpenter@oracle.com>
To:     Cong Wang <xiyou.wangcong@gmail.com>
Cc:     Tomas Bortoli <tomasbortoli@gmail.com>,
        Marcel Holtmann <marcel@holtmann.org>,
        Jaganath Kanakkassery <jaganath.k.os@gmail.com>,
        Johan Hedberg <johan.hedberg@gmail.com>,
        linux-bluetooth <linux-bluetooth@vger.kernel.org>,
        kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] Bluetooth: hci_event: potential out of bounds parsing
 ADV events
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On Tue, Apr 02, 2019 at 10:42:38AM -0700, Cong Wang wrote:
> I think these likely()/unlikely() are reasonable, ill-formatted packets
> are rare cases, normal packets deserve such a special care. We
> use likely()/unlikely() with pskb_may_pull() in many places in
> networking subsystem, at least.

The likely()/unlikely() annotations are to help the compiler optimize
the fast path.  They are not there just for decorating the code.  We
should only use likely()/unlikely() where it makes a difference in
benchmarking.  Otherwise it's just a style question, right (obviously)?
And it's better style to write things as simply as possible.

regards,
dan carpenter