net/mlx5: Avoid NULL pointer dereference on steering cleanup

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On cleanup, when the node is the last child of parent then it calls to
tree_put_node on the parent, if the parent's reference count
is decremented to 0 (for e.g. when deleting last destination of FTE)
then we free the parent as well and vice versa. In such a case
we will try to free the parent node again.
Increment the parent reference count before cleaning it's children
will prevent implicit release of the parent object.

Fixes: 0da2d66666 ('net/mlx5: Properly remove all steering objects')
signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

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Maor Gottlieb 2017-08-23 17:50:03 +03:00 • committed by Saeed Mahameed

parent b92af5a72c

commit 800350a3f1

1 changed files with 2 additions and 0 deletions

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drivers/net/ethernet/mellanox/mlx5/core/fs_core.c

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