From: Florian Westphal <fw@strlen.de>
To: Nicole <nicole@cats-muvva.net>
Cc: netfilter-devel@vger.kernel.org
Subject: Re: Non-Understood Message
Date: Tue, 13 Nov 2012 23:53:31 +0100 [thread overview]
Message-ID: <20121113225331.GG20678@breakpoint.cc> (raw)
In-Reply-To: <50A2A40E.5050802@cats-muvva.net>
Nicole <nicole@cats-muvva.net> wrote:
> MYTARGET.0 target: invalid size 65540 (kernel) != (user) 4
[..]
> struct xt_mytarget_tginfo {
> __u8 value;
>
> __u8 mode;
>
> bool final;
>
> bool set_value;
>
> __u8 by_port[USHRT_MAX];
> };
Its too large. The kernel <-> userspace abi encodes size
in 'u16' datatype, thus the target size sent by userspace overflows.
prev parent reply other threads:[~2012-11-13 22:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-13 19:48 Non-Understood Message Nicole
2012-11-13 22:53 ` Florian Westphal [this message]
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