ubifs: Fix memleak in ubifs_init_authentication

When crypto_shash_digestsize() fails, c->hmac_tfm
has not been freed before returning, which leads
to memleak.

Fixes: 49525e5eecca5 ("ubifs: Add helper functions for authentication support")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>

diff --git a/fs/ubifs/auth.c b/fs/ubifs/auth.c
index 51a7c8c..e564d5f 100644 (file)
--- a/fs/ubifs/auth.c
+++ b/fs/ubifs/auth.c
@@ -327,7 +327,7 @@ int ubifs_init_authentication(struct ubifs_info *c)
                ubifs_err(c, "hmac %s is bigger than maximum allowed hmac size (%d > %d)",
                          hmac_name, c->hmac_desc_len, UBIFS_HMAC_ARR_SZ);
                err = -EINVAL;
-               goto out_free_hash;
+               goto out_free_hmac;
        }
 
        err = crypto_shash_setkey(c->hmac_tfm, ukp->data, ukp->datalen);