[gnutls-devel] GnuTLS | gnutls_session_t unsafe to use from multiple threads due to TLS 1.3 rekeying (#1717)

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Daniel P_ Berrangé commented: https://gitlab.com/gnutls/gnutls/-/issues/1717#note_2626211458


FYI, we have now identified a reliable way to get GNUTLS to cause a SEGV under QEMU, not merely an error return code from gnutls_record_send|recv - it requires QEMU to trigger a rekey *twice* in outbound data stream, before QEMU starts sending on the return data stream. I've not yet been able to figure out a reproducer for this in a standalone demo program unfortunately.

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