The bitmap allocated with bitmap_zalloc() in otx2_probe() was not released in otx2_remove(). Unbinding and rebinding the driver therefore triggers a kmemleak warning:
unreferenced object (size 8): backtrace: bitmap_zalloc otx2_probe
Call bitmap_free() in the remove path to fix the leak.
Fixes: efabce290151 ("octeontx2-pf: AF_XDP zero copy receive support") Cc: stable@vger.kernel.org
Signed-off-by: Bo Sun bo@mboxify.com --- drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c index 5027fae0aa77..e808995703cf 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c @@ -3542,6 +3542,7 @@ static void otx2_remove(struct pci_dev *pdev) otx2_disable_mbox_intr(pf); otx2_pfaf_mbox_destroy(pf); pci_free_irq_vectors(pf->pdev); + bitmap_free(pf->af_xdp_zc_qidx); pci_set_drvdata(pdev, NULL); free_netdev(netdev); }