On Thu, Feb 10, 2022 at 11:48:06PM +0000, Ma Zhenhua wrote: > Hi Team, > > My SSL/TLS server crashed with the following call stack. > I'm using OpenSSL 1.1.1l. I compared 1.1.1l with 1.1.1 master branch and didn't find related fixes in crypto/asn1. > Your advice will be highly appreciated. You need to run your code under valgrind, and see where the heap is being corrupted. Most likely your application code freed something it did not own, or double-freed something it did own. -- VIktor.