[PATCH] net: liquidio: fix BAR resource leak on PF number failure
From: Haoxiang Li <hidden>
Date: 2026-06-20 08:38:16
Also in:
lkml, stable
Subsystem:
cavium liquidio network driver, networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
If cn23xx_get_pf_num() fails, the function returns without
unmapping either BAR. Unmap both BARs before returning from
the error path.
Fixes: 0c45d7fe12c7 ("liquidio: fix use of pf in pass-through mode in a virtual machine")
Cc: stable@vger.kernel.org
Signed-off-by: Haoxiang Li <redacted>
---
drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c b/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c
index 75f22f74774c..a1548ca81ecd 100644
--- a/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c
+++ b/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c@@ -1167,8 +1167,11 @@ int setup_cn23xx_octeon_pf_device(struct octeon_device *oct) return 1; } - if (cn23xx_get_pf_num(oct) != 0) + if (cn23xx_get_pf_num(oct) != 0) { + octeon_unmap_pci_barx(oct, 0); + octeon_unmap_pci_barx(oct, 1); return 1; + } if (cn23xx_sriov_config(oct)) { octeon_unmap_pci_barx(oct, 0);
--
2.25.1