linux-kernel - [PATCH] dm-crypt: Fix memory leak in crypt_ctr_cipher

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Date:   Wed, 27 Sep 2017 20:28:57 +0800
From:   Jeffy Chen <jeffy.chen@...k-chips.com>
To:     linux-kernel@...r.kernel.org
Cc:     Jeffy Chen <jeffy.chen@...k-chips.com>,
        Mike Snitzer <snitzer@...hat.com>,
        Alasdair Kergon <agk@...hat.com>, linux-raid@...r.kernel.org,
        dm-devel@...hat.com, Shaohua Li <shli@...nel.org>
Subject: [PATCH] dm-crypt: Fix memory leak in crypt_ctr_cipher_old()

Fix memory leak of cipher_api.

Fixes: 33d2f09fcb35 (dm crypt: introduce new format of cipher with "capi:" prefix)
Signed-off-by: Jeffy Chen <jeffy.chen@...k-chips.com>
---

 drivers/md/dm-crypt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index a55ffd4f5933..04be8ce1742e 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -2467,6 +2467,7 @@ static int crypt_ctr_cipher_old(struct dm_target *ti, char *cipher_in, char *key
 		return ret;
 	}
 
+	kfree(cipher_api);
 	return 0;
 bad_mem:
 	ti->error = "Cannot allocate cipher strings";
-- 
2.11.0