[src/trunk]: src/sys/crypto/cprng_fast Access to struct cprng_fast must be co...

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/596bdf57b14a
branches:  trunk
changeset: 331470:596bdf57b14a
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Mon Aug 11 13:01:58 2014 +0000

description:
Access to struct cprng_fast must be consistently at IPL_VM.

diffstat:

 sys/crypto/cprng_fast/cprng_fast.c |  7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diffs (33 lines):

diff -r f6a7fe227a6b -r 596bdf57b14a sys/crypto/cprng_fast/cprng_fast.c
--- a/sys/crypto/cprng_fast/cprng_fast.c        Mon Aug 11 12:49:01 2014 +0000
+++ b/sys/crypto/cprng_fast/cprng_fast.c        Mon Aug 11 13:01:58 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cprng_fast.c,v 1.6 2014/08/11 03:50:29 riastradh Exp $ */
+/*     $NetBSD: cprng_fast.c,v 1.7 2014/08/11 13:01:58 riastradh Exp $ */
 
 /*-
  * Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cprng_fast.c,v 1.6 2014/08/11 03:50:29 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cprng_fast.c,v 1.7 2014/08/11 13:01:58 riastradh Exp $");
 
 #include <sys/types.h>
 #include <sys/param.h>
@@ -269,11 +269,14 @@
 {
        struct cprng_fast *cprng;
        uint8_t seed[CPRNG_FAST_SEED_BYTES];
+       int s;
 
        cprng_strong(kern_cprng, seed, sizeof(seed), FASYNC);
 
        cprng = percpu_getref(cprng_fast_percpu);
+       s = splvm();
        cprng_fast_seed(cprng, seed);
+       splx(s);
        percpu_putref(cprng_fast_percpu);
 
        explicit_memset(seed, 0, sizeof(seed));