2022-12-05 08:05:07

by Zhang Changzhong

[permalink] [raw]
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 <[email protected]>
---
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


2022-12-05 08:59:32

by Leon Romanovsky

[permalink] [raw]
Subject: Re: [PATCH net] ice: switch: fix potential memleak in ice_add_adv_recipe()

On Mon, Dec 05, 2022 at 03:38:22PM +0800, Zhang Changzhong wrote:
> 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 <[email protected]>
> ---
> drivers/net/ethernet/intel/ice/ice_switch.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>

Thanks,
Reviewed-by: Leon Romanovsky <[email protected]>

2022-12-06 13:37:35

by Jiri Pirko

[permalink] [raw]
Subject: Re: [PATCH net] ice: switch: fix potential memleak in ice_add_adv_recipe()

Mon, Dec 05, 2022 at 08:38:22AM CET, [email protected] wrote:
>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 <[email protected]>

Reviewed-by: Jiri Pirko <[email protected]>