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.

[Michael Tuexen]

> On 27. Jan 2021, at 19:54, Randall Stewart <rrs at freebsd.org> wrote:
> 
> The branch main has been updated by rrs:
> 
> URL: https://cgit.FreeBSD.org/src/commit/?id=24a8f6d369962f189ad808f538029179b1e7dc2f
> 
> commit 24a8f6d369962f189ad808f538029179b1e7dc2f
> Author:     Randall Stewart <rrs at FreeBSD.org>
> AuthorDate: 2021-01-27 18:32:52 +0000
> Commit:     Randall Stewart <rrs at FreeBSD.org>
> CommitDate: 2021-01-27 18:52:44 +0000
> 
>    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.
> 
>    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(+)
> 
> 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 = m_head;
> 		m_head = m_head->m_nextpkt;
> +		m->m_nextpkt = NULL;
> 		error = nd6_output_ifp(ifp, ifp, m, dst, NULL);
> 	}
>