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From: <nicolas.neel@allentis.eu>
To: <users@dpdk.org>
Subject: [dpdk-users] Segmentation fault with -msse3
Date: Thu, 4 Mar 2021 17:57:19 +0100
Message-ID: <011601d71117$7076e8c0$5164ba40$@allentis.eu> (raw)

Hello dpdk users, 


I'm a newbie to dpdk and I try to get the list of the rss hash functions for
a given port with the following code : 


static uint64_t get_rss_function(int port_id){

                int ret;

                struct rte_eth_rss_conf rss_conf;


                ret = rte_eth_dev_rss_hash_conf_get(port_id,&rss_conf);

                if(ret < 0){

                               printf("No supported rss\n");

                               return 0;


                return rss_conf.rss_hf;



I use dpdk version 20.11 and my code is compiled with the following flags (I
'm following the tips of the doc) : 

CXXFLAGS += -mssse3 -mfma -mcx16 -msse4.1 -msse4.2 -mpopcnt -mavx -mavx2


I have a segmentation fault calling ret =
rte_eth_dev_rss_hash_conf_get(port_id,&rss_conf) ; and the coredump tell an
issue with __memcpy_ssse3().


If I remove the -mssse3 I don't have the crash.


Can you help me to identify the reason of the segmentation fault and tell me
if I can easily remove the < -mssse3 > flag ?


(Sorry for my english)



             reply	other threads:[~2021-03-04 16:57 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-04 16:57 nicolas.neel [this message]
2021-03-04 17:27 ` Das, Surajit
2021-03-05 11:25   ` nicolas.neel
2021-03-05 12:38     ` Das, Surajit

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