netdev - [net-2.6 PATCH] ixgbe: fix possible NULL pointer deference in shutdown path

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Message-ID: <20101202065447.13252.88901.stgit@localhost.localdomain>
Date:	Wed, 01 Dec 2010 22:54:53 -0800
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, gospo@...hat.com, bphilips@...ell.com,
	Don Skidmore <donald.c.skidmore@...el.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-2.6 PATCH] ixgbe: fix possible NULL pointer deference in
	shutdown path

From: Don Skidmore <donald.c.skidmore@...el.com>

After freeing the rings we were not zeroing out the ring count values.
This patch now clears these counts correctly.

Reported-by: Yinghai Lu <yinghai@...nel.org>
Signed-off-by: Don Skidmore <donald.c.skidmore@...el.com>
Tested-by: Stephen Ko <stephen.s.ko@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---

 0 files changed, 0 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index fbad4d8..eee0b29 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -4771,6 +4771,9 @@ void ixgbe_clear_interrupt_scheme(struct ixgbe_adapter *adapter)
 		adapter->rx_ring[i] = NULL;
 	}
 
+	adapter->num_tx_queues = 0;
+	adapter->num_rx_queues = 0;
+
 	ixgbe_free_q_vectors(adapter);
 	ixgbe_reset_interrupt_capability(adapter);
 }

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