netdev - [PATCH -next] gss_krb5: Fix the error handling path for crypto_sync_skcipher

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Message-ID: <20240706065008.451441-1-cuigaosheng1@huawei.com>
Date: Sat, 6 Jul 2024 14:50:08 +0800
From: Gaosheng Cui <cuigaosheng1@...wei.com>
To: <trondmy@...nel.org>, <anna@...nel.org>, <chuck.lever@...cle.com>,
	<jlayton@...nel.org>, <neilb@...e.de>, <kolga@...app.com>,
	<Dai.Ngo@...cle.com>, <tom@...pey.com>, <davem@...emloft.net>,
	<edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>,
	<steved@...hat.com>, <kwc@...i.umich.edu>, <cuigaosheng1@...wei.com>
CC: <linux-nfs@...r.kernel.org>, <netdev@...r.kernel.org>
Subject: [PATCH -next] gss_krb5: Fix the error handling path for crypto_sync_skcipher_setkey

If we fail to call crypto_sync_skcipher_setkey, we should free the
memory allocation for cipher, replace err_return with err_free_cipher
to free the memory of cipher.

Fixes: 4891f2d008e4 ("gss_krb5: import functionality to derive keys into the kernel")
Signed-off-by: Gaosheng Cui <cuigaosheng1@...wei.com>
---
 net/sunrpc/auth_gss/gss_krb5_keys.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sunrpc/auth_gss/gss_krb5_keys.c b/net/sunrpc/auth_gss/gss_krb5_keys.c
index 06d8ee0db000..4eb19c3a54c7 100644
--- a/net/sunrpc/auth_gss/gss_krb5_keys.c
+++ b/net/sunrpc/auth_gss/gss_krb5_keys.c
@@ -168,7 +168,7 @@ static int krb5_DK(const struct gss_krb5_enctype *gk5e,
 		goto err_return;
 	blocksize = crypto_sync_skcipher_blocksize(cipher);
 	if (crypto_sync_skcipher_setkey(cipher, inkey->data, inkey->len))
-		goto err_return;
+		goto err_free_cipher;
 
 	ret = -ENOMEM;
 	inblockdata = kmalloc(blocksize, gfp_mask);
-- 
2.25.1