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[PATCH review for 4.9 12/50] netfilter: nf_ct_expect: Change __nf_ct_expect_check() return value.

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From: Jarno Rajahalme <jarno@ovn.org>

[ Upstream commit 4b86c459c7bee3acaf92f0e2b4c6ac803eaa1a58 ]

Commit 4dee62b1b9b4 ("netfilter: nf_ct_expect: nf_ct_expect_insert()
returns void") inadvertently changed the successful return value of
nf_ct_expect_related_report() from 0 to 1 due to
__nf_ct_expect_check() returning 1 on success.  Prevent this
regression in the future by changing the return value of
__nf_ct_expect_check() to 0 on success.

Signed-off-by: Jarno Rajahalme <jarno@ovn.org>
Acked-by: Joe Stringer <joe@ovn.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
---
 net/netfilter/nf_conntrack_expect.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c
index f8dbacf66795..0d6c72d6b9ba 100644
--- a/net/netfilter/nf_conntrack_expect.c
+++ b/net/netfilter/nf_conntrack_expect.c
@@ -411,7 +411,7 @@ static inline int __nf_ct_expect_check(struct nf_conntrack_expect *expect)
 	struct net *net = nf_ct_exp_net(expect);
 	struct hlist_node *next;
 	unsigned int h;
-	int ret = 1;
+	int ret = 0;
 
 	if (!master_help) {
 		ret = -ESHUTDOWN;
@@ -461,7 +461,7 @@ int nf_ct_expect_related_report(struct nf_conntrack_expect *expect,
 
 	spin_lock_bh(&nf_conntrack_expect_lock);
 	ret = __nf_ct_expect_check(expect);
-	if (ret <= 0)
+	if (ret < 0)
 		goto out;
 
 	ret = nf_ct_expect_insert(expect);
-- 
2.11.0

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[PATCH review for 4.9 01/50] xen-netback: Use GFP_ATOMIC to allocate  hash "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-09-25 03:40 +0200
  [PATCH review for 4.9 17/50] f2fs: do not wait for writeback in  write_begin "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-09-25 03:40 +0200
  [PATCH review for 4.9 15/50] sched/fair: Update rq clock before  changing a task's CPU affinity "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-09-25 03:40 +0200
  [PATCH review for 4.9 26/50] ASoC: mediatek: add I2C dependency for  CS42XX8 "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-09-25 03:40 +0200
  [PATCH review for 4.9 42/50] hrtimer: Catch invalid clockids again "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-09-25 03:40 +0200
  [PATCH review for 4.9 06/50] mac80211_hwsim: check  HWSIM_ATTR_RADIO_NAME length "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-09-25 03:40 +0200
  [PATCH review for 4.9 07/50] ALSA: hda: Add Geminilake HDMI codec ID "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-09-25 03:40 +0200
  [PATCH review for 4.9 05/50] initramfs: finish fput() before  accessing any binary from initramfs "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-09-25 03:40 +0200
  [PATCH review for 4.9 14/50] f2fs: do SSR for data when there is  enough free space "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-09-25 03:40 +0200
  [PATCH review for 4.9 02/50] locking/lockdep: Add nest_lock integrity  test "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-09-25 03:40 +0200
  [PATCH review for 4.9 18/50] md/linear: shutup lockdep warnning "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-09-25 03:40 +0200
  [PATCH review for 4.9 12/50] netfilter: nf_ct_expect: Change  __nf_ct_expect_check() return value. "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-09-25 03:40 +0200
  [PATCH review for 4.9 24/50] slub: do not merge cache if slub_debug  contains a never-merge flag "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-09-25 03:40 +0200

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