Commit 3def995c authored by Bo Sun's avatar Bo Sun Committed by Jakub Kicinski
Browse files

octeontx2-af: CGX: fix bitmap leaks 



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: e7400038 ("octeontx2-af: Flow control resource management")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarBo Sun <bo@mboxify.com>
Reviewed-by: default avatarVadim Fedorenko <vadim.fedorenko@linux.dev>
Reviewed-by: default avatarJijie Shao <shaojijie@huawei.com>
Link: https://patch.msgid.link/20260206130925.1087588-2-bo@mboxify.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 3a23b80d

drivers/net/ethernet/marvell/octeontx2/af/cgx.c

+2 −0
Original line number Diff line number Diff line
@@ -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);

		rvu_free_bitmap(&lmac->rx_fc_pfvf_bmap);

		rvu_free_bitmap(&lmac->tx_fc_pfvf_bmap);

		kfree(lmac->name);

		kfree(lmac);

	}