From b8eb3a1046f68a5b8f284830d971c62688cd606b Mon Sep 17 00:00:00 2001 From: Don Skidmore Date: Wed, 1 Dec 2010 20:54:53 +0000 Subject: [PATCH] ixgbe: fix possible NULL pointer deference in shutdown path After freeing the rings we were not zeroing out the ring count values. This patch now clears these counts correctly. Reported-by: Yinghai Lu Signed-off-by: Don Skidmore Tested-by: Stephen Ko Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/ixgbe/ixgbe_main.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index fbad4d819608..eee0b298bd36 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); } -- 2.20.1