KK <krishnakumar(dot)143(at)gmail(dot)com> writes:
> Sep 28 23:31:07 rac-101 kernel: [223791.090456] CPU: 27 PID: 30123 Comm:
> postgres Tainted: G W 3.14.53-20150923-0842-cc65b30 #1
There was a previous discussion of this message which concluded that it
must be a kernel bug:
http://www.postgresql.org/message-id/flat/CALXbVnehCf4XX1umL=ZJ+RJ5OO_DQagNiVubt48h0B6oOL2swQ(at)mail(dot)gmail(dot)com
I'd suggest reporting it to your kernel vendor and see what they say.
regards, tom lane