netdev - [PATCH -next] net: netcp: drop kfree for memory allocated with devm

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1477139524-26359-1-git-send-email-weiyj.lk@gmail.com>
Date:   Sat, 22 Oct 2016 12:32:04 +0000
From:   Wei Yongjun <weiyj.lk@...il.com>
To:     Wingman Kwok <w-kwok2@...com>,
        Murali Karicheri <m-karicheri2@...com>
Cc:     Wei Yongjun <weiyongjun1@...wei.com>, netdev@...r.kernel.org
Subject: [PATCH -next] net: netcp: drop kfree for memory allocated with devm_kzalloc

From: Wei Yongjun <weiyongjun1@...wei.com>

It's not necessary to free memory allocated with devm_kzalloc in the
remove path and using kfree leads to a double free.

Fixes: 84640e27f230 ("net: netcp: Add Keystone NetCP core ethernet
driver")
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
---
 drivers/net/ethernet/ti/netcp_core.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/net/ethernet/ti/netcp_core.c b/drivers/net/ethernet/ti/netcp_core.c
index 11609d5..2fb5b6d 100644
--- a/drivers/net/ethernet/ti/netcp_core.c
+++ b/drivers/net/ethernet/ti/netcp_core.c
@@ -2058,7 +2058,6 @@ static void netcp_delete_interface(struct netcp_device *netcp_device,
 		if (module->release)
 			module->release(intf_modpriv->module_priv);
 		list_del(&intf_modpriv->intf_list);
-		kfree(intf_modpriv);
 	}
 	WARN(!list_empty(&netcp->module_head), "%s interface module list is not empty!\n",
 	     ndev->name);
@@ -2153,7 +2152,6 @@ static int netcp_remove(struct platform_device *pdev)
 		dev_dbg(&pdev->dev, "Removing module \"%s\"\n", module->name);
 		module->remove(netcp_device, inst_modpriv->module_priv);
 		list_del(&inst_modpriv->inst_list);
-		kfree(inst_modpriv);
 	}
 
 	/* now that all modules are removed, clean up the interfaces */