netdev - Re: [Patch nf v2 3/3] xt_hashlimit: limit the max size of hashtable

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Message-ID: <20200207145653.x2sb3kds6butpf6j@salvia>
Date:   Fri, 7 Feb 2020 15:56:53 +0100
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     netdev@...r.kernel.org, fw@...len.de,
        netfilter-devel@...r.kernel.org,
        syzbot+adf6c6c2be1c3a718121@...kaller.appspotmail.com,
        Jozsef Kadlecsik <kadlec@...filter.org>
Subject: Re: [Patch nf v2 3/3] xt_hashlimit: limit the max size of hashtable

On Sun, Feb 02, 2020 at 08:30:53PM -0800, Cong Wang wrote:
> The user-specified hashtable size is unbound, this could
> easily lead to an OOM or a hung task as we hold the global
> mutex while allocating and initializing the new hashtable.
> 
> Add a max value to cap both cfg->size and cfg->max, as
> suggested by Florian.

Also applied, thanks.