This is a note to let you know that I've just added the patch titled

net/mlx5: Fix create autogroup prev initializer

to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: net-mlx5-fix-create-autogroup-prev-initializer.patch and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Mon Dec 18 14:12:34 CET 2017

From: Paul Blakey paulb@mellanox.com Date: Fri, 10 Mar 2017 14:33:01 +0200 Subject: net/mlx5: Fix create autogroup prev initializer

From: Paul Blakey paulb@mellanox.com

[ Upstream commit af36370569eb37420e1e78a2e60c277b781fcd00 ]

The autogroups list is a list of non overlapping group boundaries sorted by their start index. If the autogroups list wasn't empty and an empty group slot was found at the start of the list, the new group was added to the end of the list instead of the beginning, as the prev initializer was incorrect. When this was repeated, it caused multiple groups to have overlapping boundaries.

Fixed that by correctly initializing the prev pointer to the start of the list.

Fixes: eccec8da3b4e ('net/mlx5: Keep autogroups list ordered') Signed-off-by: Paul Blakey paulb@mellanox.com Reviewed-by: Mark Bloch markb@mellanox.com Signed-off-by: Saeed Mahameed saeedm@mellanox.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/mellanox/mlx5/core/fs_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c @@ -1015,7 +1015,7 @@ static struct mlx5_flow_group *create_au u32 *match_criteria) { int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in); - struct list_head *prev = ft->node.children.prev; + struct list_head *prev = &ft->node.children; unsigned int candidate_index = 0; struct mlx5_flow_group *fg; void *match_criteria_addr;

Patches currently in stable-queue which might be from paulb@mellanox.com are

queue-4.9/net-mlx5-fix-create-autogroup-prev-initializer.patch