[PATCH 5.10 058/352] gss_krb5: Fix the error handling path for crypto_sync_skcipher_setkey

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5.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Gaosheng Cui <cuigaosheng1@xxxxxxxxxx>

[ Upstream commit a3123341dc358952ce2bf8067fbdfb7eaadf71bb ]

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@xxxxxxxxxx>
Reviewed-by: Simon Horman <horms@xxxxxxxxxx>
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 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 726c076950c04..fc4639687c0fd 100644
--- a/net/sunrpc/auth_gss/gss_krb5_keys.c
+++ b/net/sunrpc/auth_gss/gss_krb5_keys.c
@@ -161,7 +161,7 @@ u32 krb5_derive_key(const struct gss_krb5_enctype *gk5e,
 	if (IS_ERR(cipher))
 		goto err_return;
 	if (crypto_sync_skcipher_setkey(cipher, inkey->data, inkey->len))
-		goto err_return;
+		goto err_free_cipher;
 
 	/* allocate and set up buffers */
 
-- 
2.43.0







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