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crypto: brcm - Avoid double free in ahash_finup() 

In Broadcom SPU driver, in case where incremental hash
is done in software in ahash_finup(), tmpbuf was freed
twice.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rob Rice <rob.rice@broadcom.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Rob Rice 2017-02-14 12:45:52 -05:00 committed by Herbert Xu
parent eafa26696a
commit dcd36c436c
1 changed files with 0 additions and 1 deletions
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drivers/crypto/bcm/cipher.c
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@ -2331,7 +2331,6 @@ static int ahash_finup(struct ahash_request *req)
/* Call synchronous update */ /* Call synchronous update */
ret = crypto_shash_finup(ctx->shash, tmpbuf, req->nbytes, ret = crypto_shash_finup(ctx->shash, tmpbuf, req->nbytes,
req->result); req->result);
kfree(tmpbuf);
} else { } else {
/* Otherwise call the internal function which uses SPU hw */ /* Otherwise call the internal function which uses SPU hw */
return __ahash_finup(req); return __ahash_finup(req);