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crypto: drbg - fix error return code 

Fix to return a negative error code from the error handling
case instead of 0.

Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Acked-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Wei Yongjun 2016-08-20 15:06:51 +00:00 committed by Herbert Xu
parent b46b9d1aad
commit 1a45d7e343
1 changed files with 11 additions and 5 deletions
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16
crypto/drbg.c
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@ -1178,12 +1178,16 @@ static inline int drbg_alloc_state(struct drbg_state *drbg)
goto err;
drbg->Vbuf = kmalloc(drbg_statelen(drbg) + ret, GFP_KERNEL);
if (!drbg->Vbuf)
if (!drbg->Vbuf) {
ret = -ENOMEM;
goto fini;
}
drbg->V = PTR_ALIGN(drbg->Vbuf, ret + 1);
drbg->Cbuf = kmalloc(drbg_statelen(drbg) + ret, GFP_KERNEL);
if (!drbg->Cbuf)
if (!drbg->Cbuf) {
ret = -ENOMEM;
goto fini;
}
drbg->C = PTR_ALIGN(drbg->Cbuf, ret + 1);
/* scratchpad is only generated for CTR and Hash */
if (drbg->core->flags & DRBG_HMAC)
@ -1199,8 +1203,10 @@ static inline int drbg_alloc_state(struct drbg_state *drbg)
if (0 < sb_size) {
drbg->scratchpadbuf = kzalloc(sb_size + ret, GFP_KERNEL);
if (!drbg->scratchpadbuf)
if (!drbg->scratchpadbuf) {
ret = -ENOMEM;
goto fini;
}
drbg->scratchpad = PTR_ALIGN(drbg->scratchpadbuf, ret + 1);
}
@ -1999,7 +2005,7 @@ static int __init drbg_init(void)
{
unsigned int i = 0; /* pointer to drbg_algs */
unsigned int j = 0; /* pointer to drbg_cores */
int ret = -EFAULT;
int ret;
ret = drbg_healthcheck_sanity();
if (ret)
@ -2009,7 +2015,7 @@ static int __init drbg_init(void)
pr_info("DRBG: Cannot register all DRBG types"
"(slots needed: %zu, slots available: %zu)\n",
ARRAY_SIZE(drbg_cores) * 2, ARRAY_SIZE(drbg_algs));
return ret;
return -EFAULT;
}
/*