From: Jacob Keller jacob.e.keller@intel.com
[ Upstream commit 4f0400803818f2642f066d3eacaf013f23554cc7 ]
In iavf_config_clsflower, the filter structure could be accidentally released at the end, if iavf_parse_cls_flower or iavf_handle_tclass ever return a non-zero but positive value.
In this case, the function continues through to the end, and will call kfree() on the filter structure even though it has been added to the linked list.
This can actually happen because iavf_parse_cls_flower will return a positive IAVF_ERR_CONFIG value instead of the traditional negative error codes.
Fix this by ensuring that the kfree() check and error checks are similar. Use the more idiomatic "if (err)" to catch all non-zero error codes.
Fixes: 0075fa0fadd0 ("i40evf: Add support to apply cloud filters") Signed-off-by: Jacob Keller jacob.e.keller@intel.com Tested-by: Tony Brelinski tony.brelinski@intel.com Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/intel/iavf/iavf_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c index 43afe887cac9e..6f6cd013eef3e 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_main.c +++ b/drivers/net/ethernet/intel/iavf/iavf_main.c @@ -3033,11 +3033,11 @@ static int iavf_configure_clsflower(struct iavf_adapter *adapter, /* start out with flow type and eth type IPv4 to begin with */ filter->f.flow_type = VIRTCHNL_TCP_V4_FLOW; err = iavf_parse_cls_flower(adapter, cls_flower, filter); - if (err < 0) + if (err) goto err;
err = iavf_handle_tclass(adapter, tc, filter); - if (err < 0) + if (err) goto err;
/* add filter to the list */