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| author | Cong Wang <xiyou.wangcong@gmail.com> | 2018-02-05 14:41:45 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-25 11:03:37 +0100 |
| commit | 4b1932a19b9d2e09ee1a45c90fb43e1e72928032 (patch) | |
| tree | ec1d07a73cd897449424c5988e2049a6eeddcaec /lib/check_signature.c | |
| parent | 622cdb9c9ec86aedc527f0c669884e223b7a3ef5 (diff) | |
netfilter: xt_RATEEST: acquire xt_rateest_mutex for hash insert
commit 7dc68e98757a8eccf8ca7a53a29b896f1eef1f76 upstream.
rateest_hash is supposed to be protected by xt_rateest_mutex,
and, as suggested by Eric, lookup and insert should be atomic,
so we should acquire the xt_rateest_mutex once for both.
So introduce a non-locking helper for internal use and keep the
locking one for external.
Reported-by: <syzbot+5cb189720978275e4c75@syzkaller.appspotmail.com>
Fixes: 5859034d7eb8 ("[NETFILTER]: x_tables: add RATEEST target")
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/check_signature.c')
0 files changed, 0 insertions, 0 deletions