[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <f420615f-2b3c-90c2-4e14-f06ed4cac3eb@huawei.com>
Date: Sat, 14 Jan 2023 10:53:33 +0800
From: shaozhengchao <shaozhengchao@...wei.com>
To: Eric Dumazet <eric.dumazet@...il.com>, <netdev@...r.kernel.org>,
<linux-wireless@...r.kernel.org>, <johannes@...solutions.net>,
<davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
<pabeni@...hat.com>
CC: <weiyongjun1@...wei.com>, <yuehaibing@...wei.com>
Subject: Re: [PATCH] wifi: mac80211: fix memory leak in ieee80211_if_add()
On 2023/1/13 16:15, Eric Dumazet wrote:
>
> On 11/17/22 07:45, Zhengchao Shao wrote:
>> When register_netdevice() failed in ieee80211_if_add(), ndev->tstats
>> isn't released. Fix it.
>>
>> Fixes: 5a490510ba5f ("mac80211: use per-CPU TX/RX statistics")
>> Signed-off-by: Zhengchao Shao <shaozhengchao@...wei.com>
>> ---
>> net/mac80211/iface.c | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
>> index dd9ac1f7d2ea..46f08ec5ed76 100644
>> --- a/net/mac80211/iface.c
>> +++ b/net/mac80211/iface.c
>> @@ -2258,6 +2258,7 @@ int ieee80211_if_add(struct ieee80211_local
>> *local, const char *name,
>> ret = cfg80211_register_netdevice(ndev);
>> if (ret) {
>> + ieee80211_if_free(ndev);
>> free_netdev(ndev);
>> return ret;
>> }
>
>
> Note: I will send a revert of this buggy patch, this was adding a double
> free.
>
>
Hi Eric:
Thank you very much for pointing out my problem. I'll be more
rigorous in the future.
Zhengchao Shao
>
Powered by blists - more mailing lists