From: Bo Sun bo@mboxify.com Date: Mon, 20 Oct 2025 22:31:12 +0800

The RX/TX flow-control bitmaps (rx_fc_pfvf_bmap and tx_fc_pfvf_bmap) are allocated by cgx_lmac_init() but never freed in cgx_lmac_exit(). Unbinding and rebinding the driver therefore triggers kmemleak:

unreferenced object (size 16):
    backtrace:
      rvu_alloc_bitmap
      cgx_probe

Free both bitmaps during teardown.

Fixes: e740003874ed ("octeontx2-af: Flow control resource management") Cc: stable@vger.kernel.org Signed-off-by: Bo Sun bo@mboxify.com

Reviewed-by: Alexander Lobakin aleksander.lobakin@intel.com

---

drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c index ec0e11c77cbf..f56e6782c4de 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c @@ -1823,6 +1823,8 @@ static int cgx_lmac_exit(struct cgx *cgx) cgx->mac_ops->mac_pause_frm_config(cgx, lmac->lmac_id, false); cgx_configure_interrupt(cgx, lmac, lmac->lmac_id, true); kfree(lmac->mac_to_index_bmap.bmap);

• kfree(lmac->rx_fc_pfvf_bmap.bmap);
  

• kfree(lmac->tx_fc_pfvf_bmap.bmap);
  

  kfree(lmac->name); kfree(lmac); }

Thanks, Olek