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authorReiter Wolfgang <wr0112358@gmail.com>2017-01-03 01:39:10 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-01-15 13:42:54 +0100
commit9f65f5d4746bdfe274a5f6ae7ce99c2441c8d286 (patch)
tree014a087fb962fa12012fa6f12674b3cd1b5ee2eb /net
parent9f7551e05b0f59c09bf0ef8277e3364449feacb6 (diff)
drop_monitor: consider inserted data in genlmsg_end
[ Upstream commit 3b48ab2248e61408910e792fe84d6ec466084c1a ] Final nlmsg_len field update must reflect inserted net_dm_drop_point data. This patch depends on previous patch: "drop_monitor: add missing call to genlmsg_end" Signed-off-by: Reiter Wolfgang <wr0112358@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
-rw-r--r--net/core/drop_monitor.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c
index 5de61aaad586..ca2c9c8b9a3e 100644
--- a/net/core/drop_monitor.c
+++ b/net/core/drop_monitor.c
@@ -107,7 +107,6 @@ static struct sk_buff *reset_per_cpu_data(struct per_cpu_dm_data *data)
}
msg = nla_data(nla);
memset(msg, 0, al);
- genlmsg_end(skb, msg_header);
goto out;
err:
@@ -117,6 +116,13 @@ out:
swap(data->skb, skb);
spin_unlock_irqrestore(&data->lock, flags);
+ if (skb) {
+ struct nlmsghdr *nlh = (struct nlmsghdr *)skb->data;
+ struct genlmsghdr *gnlh = (struct genlmsghdr *)nlmsg_data(nlh);
+
+ genlmsg_end(skb, genlmsg_data(gnlh));
+ }
+
return skb;
}