‘The implementation of the concurrency primitive LockSupport.parkNanos(), the function that controls *every* concurrency primitive on the JVM, is flawed, and any NTP sync, or system time change, can potentially break it with unexpected results across the board when running a 64bit JVM on Linux 64bit.’ Basically, LockSupport.parkNanos() calls pthread_cond_timedwait() using a CLOCK_REALTIME instead of CLOCK_MONOTONIC. ‘tinker step 0’ in ntp.conf may be a viable workaround.
The new Snowden revelations are explosive. Basically, the NSA is able to decrypt most of the Internet. They’re doing it primarily by cheating, not by mathematics. It’s joint reporting between the Guardian, the New York Times, and ProPublica. I have been working with Glenn Greenwald on the Snowden documents, and I have seen a lot of them. These are my two essays on today’s revelations. Remember this: The math is good, but math has no agency. Code has agency, and the code has been subverted.