FULL PRODUCT VERSION :
$ java -version
java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Linux slc09znj 3.8.13-118.13.3.el6uek.x86_64 #2 SMP Fri Oct 21 14:30:26 PDT 2016 x86_64 x86_64 x86_64 GNU/Linux

A DESCRIPTION OF THE PROBLEM :
http://hg.openjdk.java.net/jdk8u/jdk8u/jdk/file/80280d8b40e9/src/solaris/native/sun/nio/ch/PollArrayWrapper.c contains

    044 jlong start, now;
    ....
    047 int diff;
    048
    049 gettimeofday(&t, NULL);
    050 start = t.tv_sec * 1000 + t.tv_usec / 1000;
    051
    ....
    056 gettimeofday(&t, NULL);
    057 now = t.tv_sec * 1000 + t.tv_usec / 1000;
    058 diff = now - start;

where two long quantities are subtracted, but their difference is stored in an int, leading to a possible overflow.

I have not thought about whether the overflow is possible, or what the consequences would be. The easy solution is to change `diff` to be a `long` instead of an `int`.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Just look at the code.


REPRODUCIBILITY :
This bug can be reproduced rarely.