| From | Ben Hutchings <> | Date | Thu, 07 Jun 2018 15:05:21 +0100 | Subject | [PATCH 3.16 221/410] netlink: avoid a double skb free in genlmsg_mcast() |
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3.16.57-rc1 review patch. If anyone has any objections, please let me know.
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From: Nicolas Dichtel <nicolas.dichtel@6wind.com>
commit 02a2385f37a7c6594c9d89b64c4a1451276f08eb upstream.
nlmsg_multicast() consumes always the skb, thus the original skb must be freed only when this function is called with a clone.
Fixes: cb9f7a9a5c96 ("netlink: ensure to loop over all netns in genlmsg_multicast_allns()") Reported-by: Ben Hutchings <ben.hutchings@codethink.co.uk> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- net/netlink/genetlink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -1067,7 +1067,7 @@ static int genlmsg_mcast(struct sk_buff if (!err) delivered = true; else if (err != -ESRCH) - goto error; + return err; return delivered ? 0 : -ESRCH; error: kfree_skb(skb);
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