[PATCH] app/testpmd: fix crash on cleanup

[Singh, Aman Deep]

On 2/6/2023 9:19 PM, David Marchand wrote:
> If allocating the ports[] array fails, a crash will occur when shutting
> down testpmd since ethdev emits RTE_ETH_EVENT_DESTROY events.
> Move init_port() before registering ethdev event handler.

Looks ok to me. Avoids seg_fault, due to Null pointer access.

>
> Fixes: 85c6571c9103 ("app/testpmd: reset port status on close notification")
> Cc: stable at dpdk.org
>
> Signed-off-by: David Marchand <david.marchand at redhat.com>

Acked-by: Aman Singh <aman.deep.singh at intel.com>

> ---
>   app/test-pmd/testpmd.c | 6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
> index e366f81a0f..de3017fd62 100644
> --- a/app/test-pmd/testpmd.c
> +++ b/app/test-pmd/testpmd.c
> @@ -4385,6 +4385,9 @@ main(int argc, char** argv)
>   		rte_exit(EXIT_FAILURE, "Cannot init EAL: %s\n",
>   			 rte_strerror(rte_errno));
>   
> +	/* allocate port structures, and init them */
> +	init_port();
> +
>   	ret = register_eth_event_callback();
>   	if (ret != 0)
>   		rte_exit(EXIT_FAILURE, "Cannot register for ethdev events");
> @@ -4403,9 +4406,6 @@ main(int argc, char** argv)
>   	if (nb_ports == 0)
>   		TESTPMD_LOG(WARNING, "No probed ethernet devices\n");
>   
> -	/* allocate port structures, and init them */
> -	init_port();
> -
>   	set_def_fwd_config();
>   	if (nb_lcores == 0)
>   		rte_exit(EXIT_FAILURE, "No cores defined for forwarding\n"