I haven't seen that one, however it's well described here:
https://wiki.openssl.org/index.php/Library_Initialization

I'm not seeing any calls to ENGINE_cleanup() or other OSSL teardowns,
So on program exit you may see these.

I can say with ASAN, I don't see them when running the tools. All the tests
are run asan enabled and run cleanly and the tools use ESYS.

Bill

> -----Original Message-----
> From: tpm2 [mailto:tpm2-bounces(a)lists.01.org] On Behalf Of Timothy Le
> Sent: Friday, August 23, 2019 12:38 PM
> To: tpm2(a)lists.01.org
> Subject: Re: [tpm2] tpm2 Digest, Vol 26, Issue 12
> 
> Hi,
> Sorry to bother, but just following up if anyone has encountered this memory
> leak. For reference, the valgrind output is:
> 
> ==14825== 24 bytes in 1 blocks are still reachable in loss record 518 of 545
> ==14825==    at 0x4C2DB8F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-
> amd64-linux.so)
> ==14825==    by 0x5969E77: CRYPTO_malloc (in /lib/x86_64-linux-
> gnu/libcrypto.so.1.0.0)
> ==14825==    by 0x5A21F85: lh_insert (in /lib/x86_64-linux-gnu/libcrypto.so.1.0.0)
> ==14825==    by 0x596CC54: OBJ_NAME_add (in /lib/x86_64-linux-
> gnu/libcrypto.so.1.0.0)
> ==14825==    by 0x5A2C565: EVP_add_digest (in /lib/x86_64-linux-
> gnu/libcrypto.so.1.0.0)
> ==14825==    by 0x5A30F4A: OpenSSL_add_all_digests (in /lib/x86_64-linux-
> gnu/libcrypto.so.1.0.0)
> ==14825==    by 0x50CC9FE: iesys_cryptossl_init (esys_crypto_ossl.c:1118)
> ==14825==    by 0x50BDE5B: iesys_initialize_crypto (esys_crypto.c:537)
> ==14825==    by 0x50BB474: Esys_Initialize (esys_context.c:81)
> 
> Thank you
> 
> On 8/21/19, 2:58 PM, "tpm2 on behalf of tpm2-request(a)lists.01.org" <tpm2-
> bounces(a)lists.01.org on behalf of tpm2-request(a)lists.01.org> wrote:
> 
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>     Today's Topics:
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>        1. Re: Memory Leak stemming from Esys_Initialize (Timothy Le)
> 
> 
>     ----------------------------------------------------------------------
> 
>     Message: 1
>     Date: Wed, 21 Aug 2019 17:08:52 +0000
>     From: Timothy Le <leti(a)vmware.com>
>     To: Tadeusz Struk <tadeusz.struk(a)intel.com>, "tpm2(a)lists.01.org"
>     	<tpm2(a)lists.01.org>
>     Subject: Re: [tpm2] Memory Leak stemming from Esys_Initialize
>     Message-ID: <23296169-2F17-4F42-90D3-557623F3BE22(a)vmware.com>
>     Content-Type: text/plain; charset="utf-8"
> 
>     Hi,
>     Thank you for your e-mail. I have the most recent version of TSS, including the
> changes to the test made yesterday. I still have the same leak (memory allocated
> in CRYPTO_malloc and also CRYPTO_REALLOC) are not freed.
> 
> 
> 
>     ?On 8/19/19, 11:19 AM, "Tadeusz Struk" <tadeusz.struk(a)intel.com> wrote:
> 
>         Hi Timothy,
>         On 8/16/19 3:33 PM, Timothy Le wrote:
>         > It seems that there is memory getting allocated in CRYPO_malloc that
> Esys_Finalize is not freeing. I have traced the code, but I don?t have access to
> EVP_add_digest and the other inner function calls. Would someone be able to
> give me advice on how to free this memory?
> 
>         Could you specify what version of TSS are you using?
>         There was number of fixes merged in recently to fix these leaks.
> 
>         Thanks,
>         --
>         Tadeusz
> 
> 
> 
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>     End of tpm2 Digest, Vol 26, Issue 12
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