Here is the stack trace : libeay32.dll!RAND_poll Normal [External Code]
libeay32.dll!RAND_poll() Line 523 libeay32.dll!ssleay_rand_bytes(unsigned char * buf, int num, int pseudo) Line 395 libeay32.dll!ssleay_rand_nopseudo_bytes(unsigned char * buf, int num) Line 536 Thanks Jason On Wed, Sep 27, 2017 at 2:02 PM, Michael Wojcik < michael.woj...@microfocus.com> wrote: > > From: openssl-users [mailto:openssl-users-boun...@openssl.org] On > Behalf Of Jason Qian via openssl-users > > Sent: Wednesday, September 27, 2017 07:00 > > To: openssl-users@openssl.org > > Subject: [openssl-users] DH_generate_key Hangs > > > Need some help, one of our application that hangs when calling > > DH_generate_key (openssl-0.9.8y). This occurs randomly under loaded > condition. > > Not sure, if anyone know this issue ? > > The issue is running OpenSSL 0.9.8, which has not been supported since > 2015. > > DH_generate_key can use an engine (at least in supported versions of > OpenSSL - I no longer have any 0.9.8 code around to check), so we really > can't say what it might be doing in your application. But if it's using the > default OpenSSL implementation, then if your DH parameters don't already > include a private key, you'll end up generating random numbers. That can > hang, if OpenSSL is using a blocking CPRNG source such as /dev/random. > > But you haven't provided nearly enough information to do more than > speculate. > > What you need to do: > > 1. Upgrade to OpenSSL 1.0.2 (or possibly 1.1.0, but that has API changes > and isn't an LTS release). There's really no point in proceeding unless you > do so. Your application is broken if it's using 0.9.8. > > 2. If the problem still occurs, debug a hanging instance and find out > where *exactly* it's hung. > > -- > Michael Wojcik > Distinguished Engineer, Micro Focus > > > >
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