Branch: refs/heads/openssl-fixes Home: https://github.com/kronosnet/kronosnet Commit: 82a7bc3d3c5824c3d0ece85ce3792eca11578e5c https://github.com/kronosnet/kronosnet/commit/82a7bc3d3c5824c3d0ece85ce3792… Author: Fabio M. Di Nitto &lt;fdinitto(a)redhat.com&gt; Date: 2018-01-02 (Tue, 02 Jan 2018) Changed paths: M libknet/crypto_openssl.c Log Message: ----------- [openssl] fix openssl1.0 crash by implementing documented locking callbacks openssl < 1.1.0 do not support natively multithread applications and need some extra help from the application itself to provide locking callbacks. https://www.openssl.org/docs/man1.0.2/crypto/threads.html https://www.openssl.org/blog/blog/2017/02/21/threads/ to test this fix is necessary to use knet_bench or corosync with openssl and lots of heavy load (perf benchmark) workload. Sooner or later the application will crash with some random tracebacks. after this patch, the crash cannot be reproduced anymore. tested using 9 nodes x2 active/active links all running corosync + cpghum Signed-off-by: Fabio M. Di Nitto &lt;fdinitto(a)redhat.com&gt;