[PATCH 5.4 045/154] qlcnic: fix memory leak issues in qlcnic_sriov_common.c

Greg Kroah-Hartman
2025-04-08T12:04:12Z

From: Haoxiang Li <haoxiang_li2024@163.com>

commit d2b9d97e89c79c95f8b517e4fa43fd100f936acc upstream.

Add qlcnic_sriov_free_vlans() in qlcnic_sriov_alloc_vlans() if
any sriov_vlans fails to be allocated.
Add qlcnic_sriov_free_vlans() to free the memory allocated by
qlcnic_sriov_alloc_vlans() if "sriov->allowed_vlans" fails to
be allocated.

Fixes: 91b7282b613d ("qlcnic: Support VLAN id config.")
Cc: stable@vger.kernel.org
Signed-off-by: Haoxiang Li <haoxiang_li2024@163.com>
Link: https://patch.msgid.link/20250307094952.14874-1-haoxiang_li2024@163.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c
@@ -455,8 +455,10 @@ static int qlcnic_sriov_set_guest_vlan_m

num_vlans = sriov->num_allowed_vlans;
sriov->allowed_vlans = kcalloc(num_vlans, sizeof(u16), GFP_KERNEL);
- if (!sriov->allowed_vlans)
+ if (!sriov->allowed_vlans) {
+ qlcnic_sriov_free_vlans(adapter);
return -ENOMEM;
+ }

vlans = (u16 *)&cmd->rsp.arg[3];
for (i = 0; i < num_vlans; i++)
@@ -2174,8 +2176,10 @@ int qlcnic_sriov_alloc_vlans(struct qlcn
vf = &sriov->vf_info[i];
vf->sriov_vlans = kcalloc(sriov->num_allowed_vlans,
sizeof(*vf->sriov_vlans), GFP_KERNEL);
- if (!vf->sriov_vlans)
+ if (!vf->sriov_vlans) {
+ qlcnic_sriov_free_vlans(adapter);
return -ENOMEM;
+ }
}

return 0;