2020-04-27 10:45:53

by Wei Yongjun

[permalink] [raw]
Subject: [PATCH net-next] ath10k: fix possible memory leak in ath10k_bmi_lz_data_large()

'cmd' is malloced in ath10k_bmi_lz_data_large() and should be freed
before leaving from the error handling cases, otherwise it will cause
memory leak.

Fixes: d58f466a5dee ("ath10k: add large size for BMI download data for SDIO")
Signed-off-by: Wei Yongjun <[email protected]>
---
drivers/net/wireless/ath/ath10k/bmi.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/ath/ath10k/bmi.c b/drivers/net/wireless/ath/ath10k/bmi.c
index ea908107581d..5b6db6e66f65 100644
--- a/drivers/net/wireless/ath/ath10k/bmi.c
+++ b/drivers/net/wireless/ath/ath10k/bmi.c
@@ -380,6 +380,7 @@ static int ath10k_bmi_lz_data_large(struct ath10k *ar, const void *buffer, u32 l
NULL, NULL);
if (ret) {
ath10k_warn(ar, "unable to write to the device\n");
+ kfree(cmd);
return ret;
}




2020-04-28 09:38:41

by Kalle Valo

[permalink] [raw]
Subject: Re: [PATCH net-next] ath10k: fix possible memory leak in ath10k_bmi_lz_data_large()

Wei Yongjun <[email protected]> writes:

> 'cmd' is malloced in ath10k_bmi_lz_data_large() and should be freed
> before leaving from the error handling cases, otherwise it will cause
> memory leak.
>
> Fixes: d58f466a5dee ("ath10k: add large size for BMI download data for SDIO")
> Signed-off-by: Wei Yongjun <[email protected]>
> ---
> drivers/net/wireless/ath/ath10k/bmi.c | 1 +
> 1 file changed, 1 insertion(+)

Please don't add "net-next" to wireless-driver patches (ath10k, ath11k
etc), because we use different trees. You can add "-next" or
"wireless-driver-next" if you want, but even that is not necessary as I
apply patches to -next by default.

--
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

2020-05-04 09:07:14

by Kalle Valo

[permalink] [raw]
Subject: Re: [PATCH net-next] ath10k: fix possible memory leak in ath10k_bmi_lz_data_large()

Wei Yongjun <[email protected]> wrote:

> 'cmd' is malloced in ath10k_bmi_lz_data_large() and should be freed
> before leaving from the error handling cases, otherwise it will cause
> memory leak.
>
> Fixes: d58f466a5dee ("ath10k: add large size for BMI download data for SDIO")
> Signed-off-by: Wei Yongjun <[email protected]>
> Signed-off-by: Kalle Valo <[email protected]>

Patch applied to ath-next branch of ath.git, thanks.

2326aa011967 ath10k: fix possible memory leak in ath10k_bmi_lz_data_large()

--
https://patchwork.kernel.org/patch/11511841/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches