From: Wei Fang <wei.fang@nxp.com>

We should check whether the current SFI (Stream Filter Instance) table
is full before creating a new SFI entry. However, the previous logic
checks the handle by mistake and might lead to unpredictable behavior.

Fixes: 888ae5a3952b ("net: enetc: add tc flower psfp offload driver")
Signed-off-by: Wei Fang <wei.fang@nxp.com>
---
 drivers/net/ethernet/freescale/enetc/enetc_qos.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/freescale/enetc/enetc_qos.c b/drivers/net/ethernet/freescale/enetc/enetc_qos.c
index 130ebf6853e6..83c27bbbc6ed 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_qos.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_qos.c
@@ -1247,7 +1247,7 @@ static int enetc_psfp_parse_clsflower(struct enetc_ndev_priv *priv,
 		int index;
 
 		index = enetc_get_free_index(priv);
-		if (sfi->handle < 0) {
+		if (index < 0) {
 			NL_SET_ERR_MSG_MOD(extack, "No Stream Filter resource!");
 			err = -ENOSPC;
 			goto free_fmi;
-- 
2.25.1

Hello:

This patch was applied to netdev/net.git (main)
by David S. Miller <davem@davemloft.net>:

On Thu,  4 May 2023 16:03:59 +0800 you wrote:
> From: Wei Fang <wei.fang@nxp.com>
> 
> We should check whether the current SFI (Stream Filter Instance) table
> is full before creating a new SFI entry. However, the previous logic
> checks the handle by mistake and might lead to unpredictable behavior.
> 
> Fixes: 888ae5a3952b ("net: enetc: add tc flower psfp offload driver")
> Signed-off-by: Wei Fang <wei.fang@nxp.com>
> 
> [...]

Here is the summary with links:
  - [net] net: enetc: check the index of the SFI rather than the handle
    https://git.kernel.org/netdev/net/c/299efdc2380a

You are awesome, thank you!
-- 
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On Thu, May 04, 2023 at 04:03:59PM +0800, wei.fang@nxp.com wrote:
> From: Wei Fang <wei.fang@nxp.com>
> 
> We should check whether the current SFI (Stream Filter Instance) table
> is full before creating a new SFI entry. However, the previous logic
> checks the handle by mistake and might lead to unpredictable behavior.
> 
> Fixes: 888ae5a3952b ("net: enetc: add tc flower psfp offload driver")
> Signed-off-by: Wei Fang <wei.fang@nxp.com>
> ---
>  drivers/net/ethernet/freescale/enetc/enetc_qos.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 

Thanks,
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>