On Tue, Aug 4, 2020 at 4:46 AM linmiaohe <linmia...@huawei.com> wrote: > > From: Miaohe Lin <linmia...@huawei.com> > > The head_frag of skb would occupy one extra skb_frag_t. Take it into > account or out of bound write to skb frags may happen. > > Signed-off-by: Miaohe Lin <linmia...@huawei.com>
Please share a stack trace if this was a real bug spotted in the wild. I do not believe this patch is correct. if (A + B >= MAX) is equivalent to if (A + B + 1 > MAX) Note how the other condition (when there is no bytes in skb header) is coded : if (A + B > MAX) return false; In anycase, please always provide a Fixes: tag for any bug fix. Thanks.
