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qed/qed_sriov: guard against NULL derefs from qed_iov_get_vf_info 

We have to make sure that the info returned by the helper is valid
before using it.

Found by Linux Verification Center (linuxtesting.org) with the SVACE
static analysis tool.

Fixes: f990c82c38 ("qed*: Add support for ndo_set_vf_trust")
Fixes: 733def6a04 ("qed*: IOV link control")
Signed-off-by: Daniil Tatianin <d-tatianin@yandex-team.ru>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniil Tatianin 2023-03-16 13:29:21 +03:00 committed by David S. Miller
parent e866f29a6f
commit 25143b6a01
1 changed files with 4 additions and 1 deletions
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5
drivers/net/ethernet/qlogic/qed/qed_sriov.c
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@ -4404,6 +4404,9 @@ qed_iov_configure_min_tx_rate(struct qed_dev *cdev, int vfid, u32 rate)
}
vf = qed_iov_get_vf_info(QED_LEADING_HWFN(cdev), (u16)vfid, true);
if (!vf)
return -EINVAL;
vport_id = vf->vport_id;
return qed_configure_vport_wfq(cdev, vport_id, rate);
@ -5152,7 +5155,7 @@ static void qed_iov_handle_trust_change(struct qed_hwfn *hwfn)
/* Validate that the VF has a configured vport */
vf = qed_iov_get_vf_info(hwfn, i, true);
if (!vf->vport_instance)
if (!vf || !vf->vport_instance)
continue;
memset(&params, 0, sizeof(params));