linux-kernel - [PATCH 1/2] octeontx2-vf: fix bitmap leak

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Message-Id: <20250927071505.915905-2-bo@mboxify.com>
Date: Sat, 27 Sep 2025 15:15:04 +0800
From: Bo Sun <bo@...xify.com>
To: sgoutham@...vell.com,
	gakula@...vell.com,
	kuba@...nel.org,
	pabeni@...hat.com
Cc: netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Bo Sun <bo@...xify.com>,
	stable@...r.kernel.org
Subject: [PATCH 1/2] octeontx2-vf: fix bitmap leak

The bitmap allocated with bitmap_zalloc() in otx2vf_probe() was not
released in otx2vf_remove(). Unbinding and rebinding the driver therefore
triggers a kmemleak warning:

    unreferenced object (size 8):
      backtrace:
        bitmap_zalloc
        otx2vf_probe

Call bitmap_free() in the remove path to fix the leak.

Fixes: efabce290151 ("octeontx2-pf: AF_XDP zero copy receive support")
Cc: stable@...r.kernel.org
Signed-off-by: Bo Sun <bo@...xify.com>
---
 drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
index 7ebb6e656884..25381f079b97 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
@@ -854,6 +854,7 @@ static void otx2vf_remove(struct pci_dev *pdev)
 		qmem_free(vf->dev, vf->dync_lmt);
 	otx2vf_vfaf_mbox_destroy(vf);
 	pci_free_irq_vectors(vf->pdev);
+	bitmap_free(vf->af_xdp_zc_qidx);
 	pci_set_drvdata(pdev, NULL);
 	free_netdev(netdev);
 }