Engine crashes during different use cases

[duhampler]

Hello,
I've build the engine with a yoto build system and using it with openssl 1.0.2j
I tried different commands and every time i've got this error:
openssl: pthread_mutex_lock.c:352: __pthread_mutex_lock_full: Assertion `INTERNAL_SYSCALL_ERRNO (e, __err) != ESRCH || !robust' failed.

OpenSSL is running on a embedded linux ARM platform with an ATECC508A connected to I²C.
Complete out put

root@test:~# openssl version
OpenSSL 1.0.2j  26 Sep 2016

root@test:~# openssl req -keygen_engine ateccx08 -newkey ec:prime256v1.pem -keyout client_eccx08.key
$$eccx08_engine.c:211:bind_helper(): Entered
$$eccx08_ecdsa_sign.c:282:eccx08_ecdsa_init(): Entered
$$eccx08_eckey_meth.c:938:eccx08_pkey_meth_init(): Entered
$$eccx08_engine.c:314:bind_helper(): Succeeded
$$eccx08_engine.c:161:eccx08_init(): Entered
$$eccx08_cert.c:163:eccx08_cert_init(): Entered
$$eccx08_eckey_meth.c:802:eccx08_pmeth_selector(): Entered
$$eccx08_eckey_meth.c:536:eccx08_pkey_ec_init(): Entered
Private-Key: (256 bit)
ASN1 OID: prime256v1
NIST CURVE: P-256
$$eccx08_eckey_meth.c:586:eccx08_pkey_ec_keygen_init(): Entered
Private-Key: (256 bit)
ASN1 OID: prime256v1
NIST CURVE: P-256
Generating a 256 bit EC private key
$$eccx08_eckey_meth.c:614:eccx08_pkey_ec_keygen(): Entered
Private-Key: (256 bit)
ASN1 OID: prime256v1
NIST CURVE: P-256
openssl: pthread_mutex_lock.c:352: __pthread_mutex_lock_full: Assertion `INTERNAL_SYSCALL_ERRNO (e, __err) != ESRCH || !robust' failed.
Aborted

root@test:~# openssl engine -t ateccx08 -post GET_DEVICE_KEY:/home/root/testfile
$$eccx08_engine.c:211:bind_helper(): Entered
$$eccx08_ecdsa_sign.c:282:eccx08_ecdsa_init(): Entered
$$eccx08_eckey_meth.c:938:eccx08_pkey_meth_init(): Entered
$$eccx08_engine.c:314:bind_helper(): Succeeded
(ateccx08) Microchip ATECCx08 Engine
$$eccx08_engine.c:161:eccx08_init(): Entered
$$eccx08_cert.c:163:eccx08_cert_init(): Entered
     [ available ]
$$eccx08_cmd_defns.c:360:eccx08_cmd_ctrl(): Entered
$$eccx08_cmd_defns.c:215:get_key(): Entered
$$eccx08_eckey_meth.c:518:eccx08_load_pubkey(): Entered
$$eccx08_eckey_meth.c:412:eccx08_load_pubkey_internal(): Entered
$$eccx08_eckey_meth.c:121:eccx08_eckey_new_key(): Entered
$$eccx08_eckey_meth.c:154:eccx08_eckey_new_key(): KEY ID: ATECCx08:02:00:00:00$$eccx08_eckey_meth.c:206:eccx08_eckey_new_key(): EXITING
openssl: pthread_mutex_lock.c:352: __pthread_mutex_lock_full: Assertion `INTERNAL_SYSCALL_ERRNO (e, __err) != ESRCH || !robust' failed.
Aborted

So why is the engine never returning back to openssl?
And another question. Where is all the documention gone? All links refering to this repos documentation are redirected to the wikis Home.
Thank you

[bryan-hunt]

So a series of questions:

a) Yotta or Yocto build systems? They are quite different.

b) Do you have a build log?

c) `INTERNAL_SYSCALL_ERRNO (e, __err) != ESRCH || !robust' is a Linux system error. If you've restarted the machine and you still get the same error on the first command you run then there are two things I would check:

• if cross compiling did you link against the right librt (the one for the target vs the local)
• Does the Linux build support shared memory and robust mutexes? (if it doesn't you'll have to disable multithreaded support for this engine by altering atcab_init_safe)

d) Documentation - there was a substantial architectural change between the first and second generations of this engine. The documentation for the first generation of it was highly misleading (and would result in not utilizing the device properly). Obviously for the second generation it simply would not apply at all. Improved documentation and scripts are planned to go along with the OpenSSL 1.1 support planned for release later in the end of April.

[bryan-hunt]

A change has been pushed to master to resolve another issue that I am wondering is impacting your environment in a different way. You may wish to try it out and see if it resolves the fault with the mutex you're seeing.