Subject: [PATCH AUTOSEL 5.15 82/98] net: account alternate interface name memory

From: Sasha Levin <[email-masked]>
Date: Fri, 1 Apr 2022 10:37:26 -0400

From: Jakub Kicinski <[email-masked]>

[ Upstream commit 5d26cff5bdbebdf98ba48217c078ff102536f134 ]

George reports that altnames can eat up kernel memory.
We should charge that memory appropriately.

Reported-by: George Shuklin <[email-masked]>
Signed-off-by: Jakub Kicinski <[email-masked]>
Signed-off-by: Sasha Levin <[email-masked]>
---
 net/core/rtnetlink.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 91d7a5a5a08d..a8c319dc224a 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -3637,7 +3637,7 @@ static int rtnl_alt_ifname(int cmd, struct net_device *dev, struct nlattr *attr,
 	if (err)
 		return err;
 
-	alt_ifname = nla_strdup(attr, GFP_KERNEL);
+	alt_ifname = nla_strdup(attr, GFP_KERNEL_ACCOUNT);
 	if (!alt_ifname)
 		return -ENOMEM;
 
-- 
2.34.1