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Access to struct cprng_fast must be consistently at IPL_VM.

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This commit is contained in:
riastradh 2014-08-11 13:01:58 +00:00
parent f356508f3e
commit 215d8661dd
1 changed files with 5 additions and 2 deletions
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7
sys/crypto/cprng_fast/cprng_fast.c
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@ -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 @@ cprng_fast_intr(void *cookie __unused)
{
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));