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Date:	Mon, 2 Jan 2012 16:07:39 +0200
From:	Yevgeny Petrilin <yevgenyp@...lanox.co.il>
To:	<davem@...emloft.net>
CC:	<netdev@...r.kernel.org>, <yevgenyp@...lanox.co.il>,
	<marcela@....mellanox.co.il>
Subject: [PATCH net-next 1/2] mlx4_core: fix mtt range deallocation

From: Marcel Apfelbaum <marcela@...lanox.co.il>

The mtt range was allocated in mtt units but deallocated
in segments. Among the rest, this caused crash during hotplug removal

Reported-by: Yinghai Lu <yinghai@...nel.org> 
Signed-off-by: Marcel Apfelbaum <marcela@...lanox.co.il>
Reviewed-by: Jack Morgenstein <jackm@....mellanox.co.il>
---
 drivers/net/ethernet/mellanox/mlx4/mr.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx4/mr.c b/drivers/net/ethernet/mellanox/mlx4/mr.c
index f7243b2..01df556 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mr.c
+++ b/drivers/net/ethernet/mellanox/mlx4/mr.c
@@ -239,8 +239,8 @@ void __mlx4_free_mtt_range(struct mlx4_dev *dev, u32 offset, int order)
 	first_seg = offset / (1 << log_mtts_per_seg);
 
 	mlx4_buddy_free(&mr_table->mtt_buddy, first_seg, seg_order);
-	mlx4_table_put_range(dev, &mr_table->mtt_table, first_seg,
-			     first_seg + (1 << seg_order) - 1);
+	mlx4_table_put_range(dev, &mr_table->mtt_table, offset,
+			     offset + (1 << order) - 1);
 }
 
 static void mlx4_free_mtt_range(struct mlx4_dev *dev, u32 offset, int order)
-- 
1.7.7




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