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netfilter: x_tables: set module owner for icmp(6) matches

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[ Upstream commit d376bef9c29b3c65aeee4e785fffcd97ef0a9a81 ]

nft_compat relies on xt_request_find_match to increment
refcount of the module that provides the match/target.

The (builtin) icmp matches did't set the module owner so it
was possible to rmmod ip(6)tables while icmp extensions were still in use.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Florian Westphal 2018-07-04 20:25:32 +02:00 committed by Greg Kroah-Hartman
parent 2d0da21886
commit 365279b70b
2 changed files with 2 additions and 0 deletions
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1
net/ipv4/netfilter/ip_tables.c
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@ -1894,6 +1894,7 @@ static struct xt_match ipt_builtin_mt[] __read_mostly = {
.checkentry = icmp_checkentry,
.proto = IPPROTO_ICMP,
.family = NFPROTO_IPV4,
.me = THIS_MODULE,
},
};

1
net/ipv6/netfilter/ip6_tables.c
View File

@ -1907,6 +1907,7 @@ static struct xt_match ip6t_builtin_mt[] __read_mostly = {
.checkentry = icmp6_checkentry,
.proto = IPPROTO_ICMPV6,
.family = NFPROTO_IPV6,
.me = THIS_MODULE,
},
};