[gnutls-devel] GnuTLS | Deadlock in _gnutls_epoch_get on mutex epoch_lock with msmtp and gnutls 3.6.7 (#758)

Development of GNU's TLS library gnutls-devel at lists.gnutls.org
Mon Apr 29 21:28:12 CEST 2019

Thanks for the example. On Debian unstable I get
msmtp: envelope from address bla at bla.bla not accepted by the server
msmtp: server message: 530-5.5.1 Authentication Required. Learn more at
msmtp: server message: 530 5.5.1  https://support.google.com/mail/?p=WantAuthError d8sm6013277ejb.19 - gsmtp
msmtp: could not send mail

GnuTLS is at 3.6.7-2, msmtp is 1.8.3-1.

I also had a look at the GnuTLS sources - locking/unlocking in _gnutls_epoch_get looks good to me, also the initialization of the used mutex. Maybe there is a general issue with threading / pthreads in your version of Gentoo ?

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