port-evbmips/51218: Memory corruption or use of uninitialized RNG on evbmips-mips64eb

[tls%NetBSD.ORG@localhost]

>Number:         51218
>Category:       port-evbmips
>Synopsis:       It appears cprng_strong's called on this platform before it is initialized, or possibly after memory corruption has screwed up its state.
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-evbmips-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jun 05 22:50:00 +0000 2016
>Originator:     tls%NetBSD.ORG@localhost
>Release:        NetBSD 7.99.30
>Organization:
	The NetBSD Foundation, Inc.
>Environment:
	
	
System: NetBSD 7.99.30 NetBSD 7.99.30 (ERLITE.201606051010Z) evbmips
Architecture: mips64eb
Machine: evbmips
>Description:
	The "kernel" cprng -- which is a NIST CTR_DRBG instance whose output
	should pass the statistical tests no matter how it's keyed -- fails
	the tests at each boot on erlite.  This is usually indicative either
	of memory corruption, or use of the RNG before it's initialized.
>How-To-Repeat:
	Boot the ERLITE kernel.  Observe:

	init: copying out path `/sbin/init' 11
	pid 1(init): ABI set to N32 (e_flags=0x20000027)
	Kernel RNG "kernel" monobit test FAILURE: 10286 ones
	cprng kernel: failed statistical RNG test
	Kernel RNG "kernel" long run test FAILURE: Run of 26 0s found
	cprng kernel: failed statistical RNG test
>Fix:
	Unknown

>Unformatted: