[PATCH 5.3 087/105] crypto: af_alg - cast ki_complete ternary op to int

Greg Kroah-Hartman
2019-12-11T15:15:50Z

From: Ayush Sawal <ayush.sawal@chelsio.com>

commit 64e7f852c47ce99f6c324c46d6a299a5a7ebead9 upstream.

when libkcapi test is executed using HW accelerator, cipher operation
return -74.Since af_alg_async_cb->ki_complete treat err as unsigned int,
libkcapi receive 429467222 even though it expect -ve value.

Hence its required to cast resultlen to int so that proper
error is returned to libkcapi.

AEAD one shot non-aligned test 2(libkcapi test)
./../bin/kcapi -x 10 -c "gcm(aes)" -i 7815d4b06ae50c9c56e87bd7
-k ea38ac0c9b9998c80e28fb496a2b88d9 -a
"853f98a750098bec1aa7497e979e78098155c877879556bb51ddeb6374cbaefc"
-t "c4ce58985b7203094be1d134c1b8ab0b" -q
"b03692f86d1b8b39baf2abb255197c98"

Fixes: d887c52d6ae4 ("crypto: algif_aead - overhaul memory management")
Cc: <stable@vger.kernel.org>
Signed-off-by: Ayush Sawal <ayush.sawal@chelsio.com>
Signed-off-by: Atul Gupta <atul.gupta@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Ayush Sawal <ayush.sawal@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
crypto/af_alg.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -1043,7 +1043,7 @@ void af_alg_async_cb(struct crypto_async
af_alg_free_resources(areq);
sock_put(sk);

- iocb->ki_complete(iocb, err ? err : resultlen, 0);
+ iocb->ki_complete(iocb, err ? err : (int)resultlen, 0);
}
EXPORT_SYMBOL_GPL(af_alg_async_cb);