| From | Kamal Mostafa <> | Subject | [PATCH 3.19.y-ckt 150/164] netfilter: nfnetlink: don't probe module if it exists | Date | Wed, 2 Dec 2015 09:00:01 -0800 |
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3.19.8-ckt11 -stable review patch. If anyone has any objections, please let me know.
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From: Florian Westphal <fw@strlen.de>
commit dbc3617f4c1f9fcbe63612048cb9583fea1e11ab upstream.
nfnetlink_bind request_module()s all the time as nfnetlink_get_subsys() shifts the argument by 8 to obtain the subsys id.
So using type instead of type << 8 always returns NULL.
Fixes: 03292745b02d11 ("netlink: add nlk->netlink_bind hook for module auto-loading") Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- net/netfilter/nfnetlink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c index c421d94..7172b84 100644 --- a/net/netfilter/nfnetlink.c +++ b/net/netfilter/nfnetlink.c @@ -475,7 +475,7 @@ static int nfnetlink_bind(struct net *net, int group) type = nfnl_group2type[group]; rcu_read_lock(); - ss = nfnetlink_get_subsys(type); + ss = nfnetlink_get_subsys(type << 8); rcu_read_unlock(); if (!ss) request_module("nfnetlink-subsys-%d", type); -- 1.9.1
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