[PATCH v2] eal: cleanup alarm and multiprocess hotplug before memory detach

[Fengnan Chang]

Hi:
  is there any comments?

Fengnan Chang <changfengnan at bytedance.com> 于2022年12月21日周三 11:41写道：
>
> Alarm and multiprocess hotplug still need access hugepage memory,
> if alarm event processed after memory detach, it may cause SEGV.
> So cleanup alarm and multiprocess hotplug before memory detach.
>
> Fixes: 90b13ab8d4f7 ("alarm: remove direct access to interrupt handle")
> Fixes: a0cc7be20dd1 ("mem: cleanup multiprocess resources")
>
> Signed-off-by: Fengnan Chang <changfengnan at bytedance.com>
> ---
>  lib/eal/freebsd/eal.c | 2 +-
>  lib/eal/linux/eal.c   | 4 ++--
>  2 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/lib/eal/freebsd/eal.c b/lib/eal/freebsd/eal.c
> index 1b58cd3da6..83b99c601f 100644
> --- a/lib/eal/freebsd/eal.c
> +++ b/lib/eal/freebsd/eal.c
> @@ -897,9 +897,9 @@ rte_eal_cleanup(void)
>         eal_bus_cleanup();
>         rte_trace_save();
>         eal_trace_fini();
> +       rte_eal_alarm_cleanup();
>         /* after this point, any DPDK pointers will become dangling */
>         rte_eal_memory_detach();
> -       rte_eal_alarm_cleanup();
>         eal_cleanup_config(internal_conf);
>         return 0;
>  }
> diff --git a/lib/eal/linux/eal.c b/lib/eal/linux/eal.c
> index 8c118d0d9f..c76f026023 100644
> --- a/lib/eal/linux/eal.c
> +++ b/lib/eal/linux/eal.c
> @@ -1372,11 +1372,11 @@ rte_eal_cleanup(void)
>         eal_bus_cleanup();
>         rte_trace_save();
>         eal_trace_fini();
> +       eal_mp_dev_hotplug_cleanup();
> +       rte_eal_alarm_cleanup();
>         /* after this point, any DPDK pointers will become dangling */
>         rte_eal_memory_detach();
> -       eal_mp_dev_hotplug_cleanup();
>         rte_eal_malloc_heap_cleanup();
> -       rte_eal_alarm_cleanup();
>         eal_cleanup_config(internal_conf);
>         rte_eal_log_cleanup();
>         return 0;
> --
> 2.37.0 (Apple Git-136)
>