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Date:      Wed, 27 Jan 2021 21:24:12 +0100
From:      Michael Tuexen <Michael.Tuexen@macmic.franken.de>
To:        Randall Stewart <rrs@freebsd.org>
Cc:        "src-committers@freebsd.org" <src-committers@FreeBSD.org>, "dev-commits-src-all@freebsd.org" <dev-commits-src-all@FreeBSD.org>, "dev-commits-src-main@freebsd.org" <dev-commits-src-main@FreeBSD.org>
Subject:   Re: git: 24a8f6d36996 - main - When we are about to send down to the driver layer we need to make sure that the m_nextpkt field is NULL else the lower layers may do unwanted things.
Message-ID:  <9F54A720-4A55-48E6-88BC-CFEFC48F79B0@macmic.franken.de>
In-Reply-To: <202101271854.10RIsN1E083640@gitrepo.freebsd.org>
References:  <202101271854.10RIsN1E083640@gitrepo.freebsd.org>

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> On 27. Jan 2021, at 19:54, Randall Stewart <rrs@freebsd.org> wrote:
>=20
> The branch main has been updated by rrs:
>=20
> URL: =
https://cgit.FreeBSD.org/src/commit/?id=3D24a8f6d369962f189ad808f538029179=
b1e7dc2f
>=20
> commit 24a8f6d369962f189ad808f538029179b1e7dc2f
> Author:     Randall Stewart <rrs@FreeBSD.org>
> AuthorDate: 2021-01-27 18:32:52 +0000
> Commit:     Randall Stewart <rrs@FreeBSD.org>
> CommitDate: 2021-01-27 18:52:44 +0000
>=20
>    When we are about to send down to the driver layer
>    we need to make sure that the m_nextpkt field is NULL
>    else the lower layers may do unwanted things.
>=20
>    Reviewed By:  gallatin, melifaro
>    Differential Revision: https://reviews.freebsd.org/D28377
Any plans to MFC this to stable/13 and or stable/12?

Best regards
Michael
> ---
> sys/netinet6/nd6.c | 1 +
> 1 file changed, 1 insertion(+)
>=20
> diff --git a/sys/netinet6/nd6.c b/sys/netinet6/nd6.c
> index 386eb7cca922..497c0bfc10e8 100644
> --- a/sys/netinet6/nd6.c
> +++ b/sys/netinet6/nd6.c
> @@ -2460,6 +2460,7 @@ nd6_flush_holdchain(struct ifnet *ifp, struct =
mbuf *chain,
> 	while (m_head) {
> 		m =3D m_head;
> 		m_head =3D m_head->m_nextpkt;
> +		m->m_nextpkt =3D NULL;
> 		error =3D nd6_output_ifp(ifp, ifp, m, dst, NULL);
> 	}
>=20




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