diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2017-04-28 15:57:56 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-24 11:00:17 +0100 |
| commit | c70c7be280448ad7dce9d74fb66c858de534383a (patch) | |
| tree | 7c54f9bc747ac7a6105ab1a71c90cd641585d160 /net | |
| parent | ff3d5600e2e6240869dd73e4c205108d672db7d7 (diff) | |
netfilter: x_tables: unlock on error in xt_find_table_lock()
[ Upstream commit 7dde07e9c53617549d67dd3e1d791496d0d3868e ]
According to my static checker we should unlock here before the return.
That seems reasonable to me as well.
Fixes" b9e69e127397 ("netfilter: xtables: don't hook tables by default")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/x_tables.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c index ac26b71d900e..7ad1a863587a 100644 --- a/net/netfilter/x_tables.c +++ b/net/netfilter/x_tables.c @@ -1006,8 +1006,10 @@ struct xt_table *xt_find_table_lock(struct net *net, u_int8_t af, list_for_each_entry(t, &init_net.xt.tables[af], list) { if (strcmp(t->name, name)) continue; - if (!try_module_get(t->me)) + if (!try_module_get(t->me)) { + mutex_unlock(&xt[af].mutex); return NULL; + } mutex_unlock(&xt[af].mutex); if (t->table_init(net) != 0) { |