tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
1
fork

Configure Feed

Select the types of activity you want to include in your feed.

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: e740003874ed ("octeontx2-af: Flow control resource management")
Cc: stable@vger.kernel.org
Signed-off-by: Bo Sun <bo@mboxify.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Reviewed-by: Jijie Shao <shaojijie@huawei.com>
Link: https://patch.msgid.link/20260206130925.1087588-2-bo@mboxify.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

authored by

Bo Sun and committed by
Jakub Kicinski 3def995c 3a23b80d

+2
+2
drivers/net/ethernet/marvell/octeontx2/af/cgx.c
··· 1823 1823 cgx->mac_ops->mac_pause_frm_config(cgx, lmac->lmac_id, false); 1824 1824 cgx_configure_interrupt(cgx, lmac, lmac->lmac_id, true); 1825 1825 kfree(lmac->mac_to_index_bmap.bmap); 1826 + rvu_free_bitmap(&lmac->rx_fc_pfvf_bmap); 1827 + rvu_free_bitmap(&lmac->tx_fc_pfvf_bmap); 1826 1828 kfree(lmac->name); 1827 1829 kfree(lmac); 1828 1830 }