linux-kernel - [PATCH net] ice: switch: fix potential memleak in ice_add_adv

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Message-ID: <1670225902-10923-1-git-send-email-zhangchangzhong@huawei.com>
Date:   Mon, 5 Dec 2022 15:38:22 +0800
From:   Zhang Changzhong <zhangchangzhong@...wei.com>
To:     Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
CC:     Zhang Changzhong <zhangchangzhong@...wei.com>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH net] ice: switch: fix potential memleak in ice_add_adv_recipe()

When ice_add_special_words() fails, the 'rm' is not released, which will
lead to a memory leak. Fix this up by going to 'err_unroll' label.

Compile tested only.

Fixes: 8b032a55c1bd ("ice: low level support for tunnels")
Signed-off-by: Zhang Changzhong <zhangchangzhong@...wei.com>
---
 drivers/net/ethernet/intel/ice/ice_switch.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index 9b762f7..61f844d 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -5420,7 +5420,7 @@ ice_add_adv_recipe(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
 	 */
 	status = ice_add_special_words(rinfo, lkup_exts, ice_is_dvm_ena(hw));
 	if (status)
-		goto err_free_lkup_exts;
+		goto err_unroll;
 
 	/* Group match words into recipes using preferred recipe grouping
 	 * criteria.
-- 
2.9.5