On Sat, Jul 09, 2022 at 06:04:04PM +0300, Vitaliy Makkoveev wrote:
> Sorry, I sent the previous diff again. There is the right one.

OK bluhm@

> Index: sys/net/pipex.c
> ===================================================================
> RCS file: /cvs/src/sys/net/pipex.c,v
> retrieving revision 1.143
> diff -u -p -r1.143 pipex.c
> --- sys/net/pipex.c   2 Jul 2022 08:50:42 -0000       1.143
> +++ sys/net/pipex.c   8 Jul 2022 22:40:44 -0000
> @@ -842,20 +842,38 @@ pipex_ip_output(struct mbuf *m0, struct 
>  
>               m0->m_flags &= ~(M_BCAST|M_MCAST);
>  
> -             LIST_FOREACH(session_tmp, &pipex_session_list, session_list) {
> +             mtx_enter(&pipex_list_mtx);
> +
> +             session_tmp = LIST_FIRST(&pipex_session_list);
> +             while (session_tmp != NULL) {
> +                     struct pipex_session *session_save = NULL;
> +
>                       if (session_tmp->ownersc != session->ownersc)
> -                             continue;
> +                             goto next;
>                       if ((session->flags & (PIPEX_SFLAGS_IP_FORWARD |
>                           PIPEX_SFLAGS_IP6_FORWARD)) == 0)
> -                             continue;
> +                             goto next;
> +
> +                     refcnt_take(&session_tmp->pxs_refcnt);
> +                     mtx_leave(&pipex_list_mtx);
> +
>                       m = m_copym(m0, 0, M_COPYALL, M_NOWAIT);
> -                     if (m == NULL) {
> -                             counters_inc(session->stat_counters,
> +                     if (m != NULL)
> +                             pipex_ppp_output(m, session_tmp, PPP_IP);
> +                     else
> +                             counters_inc(session_tmp->stat_counters,
>                                   pxc_oerrors);
> -                             continue;
> -                     }
> -                     pipex_ppp_output(m, session_tmp, PPP_IP);
> +
> +                     mtx_enter(&pipex_list_mtx);
> +                     session_save = session_tmp;
> +next:
> +                     session_tmp = LIST_NEXT(session_tmp, session_list);
> +                     if (session_save != NULL)
> +                             pipex_rele_session(session_save);
>               }
> +
> +             mtx_leave(&pipex_list_mtx);
> +
>               m_freem(m0);
>       }
>  

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