https://bugs.dpdk.org/show_bug.cgi?id=377
Bug ID: 377
Summary: CRYPTODEV: set_sym_session_private_data() line 489:
Set private data for driver 0 not allowed
Product: DPDK
Version: unspecified
Hardware: x86
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: cryptodev
Assignee: dev@dpdk.org
Reporter: sunnyla...@gmail.com
Target Milestone: ---
Environment: Xeon E5-2640, Ubuntu 16.04, DPDK 19.11, Intel AESNI-MB library
0.53.0
When OpenSSL or AESNI-MB cryptodev is being used in sessionless mode for
symmetric crypto operation (e.g. SHA256 hash), the driver prints error message:
CRYPTODEV: set_sym_session_private_data() line 489: Set private data for
driver 0 not allowed
This error is caused by:
1. set_sym_session_private_data() checks sess->nb_drivers > driver_id, or it
will print the above error.
2. In session-based mode, rte_cryptodev_sym_session_create() allocates a
session structure from the session pool, then sets sess->nb_drivers =
pool_priv->nb_drivers, so that there wouldn't be an error.
3. In sessionless mode, get_session() in rte_openssl_pmd.c or
rte_aesni_mb_pmd.c allocates a session structure from the session pool, but
does not set sess->nb_drivers, causing the error.
Due to this error, AESNI-MB driver segfaults in post_process_mb_job() after
get_sym_session_private_data() returns NULL.
OpenSSL driver can still compute SHA256 digest successfully, apart from the
error message, because it does not actually use get_sym_session_private_data().
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