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<PAXPR83MB055933D7638738717A5771D4B4D42@PAXPR83MB0559.EURPRD83.prod.outlook.com>
Date: Mon, 24 Jun 2024 10:18:13 +0000
From: Konstantin Taranov <kotaranov@...rosoft.com>
To: Sai Krishna Gajula <saikrishnag@...vell.com>, Ma Ke <make24@...as.ac.cn>,
KY Srinivasan <kys@...rosoft.com>, Haiyang Zhang <haiyangz@...rosoft.com>,
"wei.liu@...nel.org" <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
"davem@...emloft.net" <davem@...emloft.net>, "edumazet@...gle.com"
<edumazet@...gle.com>, "kuba@...nel.org" <kuba@...nel.org>,
"pabeni@...hat.com" <pabeni@...hat.com>, "shradhagupta@...ux.microsoft.com"
<shradhagupta@...ux.microsoft.com>, "horms@...nel.org" <horms@...nel.org>,
"linyunsheng@...wei.com" <linyunsheng@...wei.com>,
"schakrabarti@...ux.microsoft.com" <schakrabarti@...ux.microsoft.com>,
"erick.archer@...look.com" <erick.archer@...look.com>
CC: "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] net: mana: Fix possible double free in error handling
path
> > - kfree(madev);
> I think you can just avoid using add_fail and keep/retain rest of init_fail, idx_fail
> conditions in old way right?
I do agree with Sai. I think the patch can be just:
@@ -2797,7 +2797,8 @@ static int add_adev(struct gdma_dev *gd)
ret = auxiliary_device_init(adev);
if (ret)
goto init_fail;
-
+ /* madev is owned by the auxiliary device */
+ madev = NULL;
ret = auxiliary_device_add(adev);
if (ret)
goto add_fail;
- Konstantin
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