net: account alternate interface name memory

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

Reported-by: George Shuklin <george.shuklin@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index a759f9e0a8476538fb41311113daed998a7193fd..aa05e89cc47c1bb010e8dbc05f3666ed06b1275f 100644 (file)
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -3658,7 +3658,7 @@ 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;