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Message-Id: <20120721203035.71B4DFFC4A@master.hanzubon.jp> Date: Sun, 22 Jul 2012 05:30:35 +0900 From: ISHIKAWA Mutsumi <ishikawa@...zubon.jp> To: jpirko@...hat.com Cc: netdev@...r.kernel.org Subject: [PATCH] Fix divide zero crash when xmit with no enabled port hash calculation in lb_transmit() cause divide zero crash when xmit on teaming loadbalance mode with no team member port is enabled (this situation means team->en_port_count = 0). Add check team->en_port_count is not 0. --- drivers/net/team/team_mode_loadbalance.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/team/team_mode_loadbalance.c b/drivers/net/team/team_mode_loadbalance.c index 86e8183..7b878d5 100644 --- a/drivers/net/team/team_mode_loadbalance.c +++ b/drivers/net/team/team_mode_loadbalance.c @@ -38,6 +38,8 @@ static bool lb_transmit(struct team *team, struct sk_buff *skb) if (unlikely(!fp)) goto drop; hash = SK_RUN_FILTER(fp, skb); + if (team->en_port_count < 1) + goto drop; port_index = hash % team->en_port_count; port = team_get_port_by_index_rcu(team, port_index); if (unlikely(!port)) -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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