[Patch nf] ipvs: initialize tbl->entries after allocation

To: netdev@xxxxxxxxxxxxxxx
Subject: [Patch nf] ipvs: initialize tbl->entries after allocation
Cc: lvs-devel@xxxxxxxxxxxxxxx, netfilter-devel@xxxxxxxxxxxxxxx, Cong Wang <xiyou.wangcong@xxxxxxxxx>, Simon Horman <horms@xxxxxxxxxxxx>, Julian Anastasov <ja@xxxxxx>, Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
From: Cong Wang <xiyou.wangcong@xxxxxxxxx>
Date: Mon, 23 Apr 2018 13:53:41 -0700
tbl->entries is not initialized after kmalloc(), therefore
causes an uninit-value warning in ip_vs_lblc_check_expire()
as reported by syzbot.

Reported-by: <syzbot+3dfdea57819073a04f21@xxxxxxxxxxxxxxxxxxxxxxxxx>
Cc: Simon Horman <horms@xxxxxxxxxxxx>
Cc: Julian Anastasov <ja@xxxxxx>
Cc: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Signed-off-by: Cong Wang <xiyou.wangcong@xxxxxxxxx>
 net/netfilter/ipvs/ip_vs_lblcr.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c
index 92adc04557ed..bc2bc5eebcb8 100644
--- a/net/netfilter/ipvs/ip_vs_lblcr.c
+++ b/net/netfilter/ipvs/ip_vs_lblcr.c
@@ -534,6 +534,7 @@ static int ip_vs_lblcr_init_svc(struct ip_vs_service *svc)
        tbl->counter = 1;
        tbl->dead = false;
        tbl->svc = svc;
+       atomic_set(&tbl->entries, 0);
         *    Hook periodic timer for garbage collection

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