[dpdk-users] Segmentation fault at rte_cpu_get_flag_enabled

[Stephen Hemminger]

On Mon, 20 Apr 2020 12:39:02 +0530
vikram T <vikramet at gmail.com> wrote:

> Hi,
> I have been seeing the application crashes( DPDK v19.08) with segmentation
> fault as below:
> (gdb) bt
> #0  0x000000000054fda9 in rte_cpu_get_flag_enabled ()
> #1  0x00000000004f5d5e in rte_hash_crc_init_alg ()
> #2  0x000000000084cf7d in __libc_csu_init ()
> #3  0x00007ffff4df9425 in __libc_start_main () from /lib64/libc.so.6
> #4  0x00000000005048df in _start ()
> (gdb) q
> 
> Here the DPDK is built and linked on the machine different from the target
> machine.
> Hence used the flag - "CONFIG_RTE_MACHINE = default"  but no success.
> 
> Is there anything that needs to be followed to overcome this blocking issue?
> 
> Regards
> Vikram

You need to to set CONFIG_RTE_MACHINE to the minimum cpu type that your
product needs to run on. That value sets the compiler flags which determine
which extended CPU instructions will be used.