[PATCH 6.10 096/634] crypto: n2 - Set err to EINVAL if snprintf fails for hmac

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

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

From: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>

[ Upstream commit ce212d2afca47acd366a2e74c76fe82c31f785ab ]

Return EINVAL if the snprintf check fails when constructing the
algorithm names.

Fixes: 8c20982caca4 ("crypto: n2 - Silence gcc format-truncation false positive warnings")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Closes: https://lore.kernel.org/r/202409090726.TP0WfY7p-lkp@xxxxxxxxx/
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/crypto/n2_core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/crypto/n2_core.c b/drivers/crypto/n2_core.c
index 59d472cb11e75..509aeffdedc69 100644
--- a/drivers/crypto/n2_core.c
+++ b/drivers/crypto/n2_core.c
@@ -1357,6 +1357,7 @@ static int __n2_register_one_hmac(struct n2_ahash_alg *n2ahash)
 	ahash->setkey = n2_hmac_async_setkey;
 
 	base = &ahash->halg.base;
+	err = -EINVAL;
 	if (snprintf(base->cra_name, CRYPTO_MAX_ALG_NAME, "hmac(%s)",
 		     p->child_alg) >= CRYPTO_MAX_ALG_NAME)
 		goto out_free_p;
-- 
2.43.0







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