[dpdk-users] Segmentation fault in aes_cmac_subkey_gen_avx512 and avx512 usage

[Suraj R Gupta <surajrgupta@iith.ac.in>]

Hi all,
I am encountering some issues in using intel multi buffer library with dpdk
crypto library.




*DPDK version used - 18.05.1Intel Multibuffer library version - 0.52
( https://github.com/intel/intel-ipsec-mb/tree/v0.52
<https://github.com/intel/intel-ipsec-mb/tree/v0.52> )CPU - InfoIntel(R)
Core(TM) i7-8700 CPU @ 3.20GHz*

1. When I am using aes cmac with intel multi buffer library from DPDK. I am
receiving an segmentation fault in aes_cmac_subkey_gen_avx512().
This segmentation fault appears at times.
Thread 5 "lcore-slave-1" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7feff43fe700 (LWP 24301)]
0x00007ffff730ab04 in aes_cmac_subkey_gen_avx512 () from
/usr/lib/libIPSec_MB.so.0

2. On compiling the above intel multi buffer library and running LibTestApp
from multi buffer library. It is showing Illegal Instruction.
AES-CFB128 standard test vectors:
........................
...Pass
SHA standard test vectors (N jobs = 1):
....................
...Pass
Testing AVX512 interface
Illegal instruction (core dumped)

I am not able to understand the issue. Request you to help me in this
regard.
Please revert for any clarification.
-- 
Thanks and Regards
Suraj R Gupta