Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.19 01/30] net: qlogic: check the return value of dma_alloc_coherent() in qed_vf_hw_prepare() | Date | Mon, 14 Mar 2022 12:34:19 +0100 |
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From: Jia-Ju Bai <baijiaju1990@gmail.com>
[ Upstream commit e0058f0fa80f6e09c4d363779c241c45a3c56b94 ]
The function dma_alloc_coherent() in qed_vf_hw_prepare() can fail, so its return value should be checked.
Fixes: 1408cc1fa48c ("qed: Introduce VFs") Reported-by: TOTE Robot <oslab@tsinghua.edu.cn> Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/net/ethernet/qlogic/qed/qed_vf.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/net/ethernet/qlogic/qed/qed_vf.c b/drivers/net/ethernet/qlogic/qed/qed_vf.c index 93a0fbf6a132..e12338abaf0a 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_vf.c +++ b/drivers/net/ethernet/qlogic/qed/qed_vf.c @@ -539,6 +539,9 @@ int qed_vf_hw_prepare(struct qed_hwfn *p_hwfn) p_iov->bulletin.size, &p_iov->bulletin.phys, GFP_KERNEL); + if (!p_iov->bulletin.p_virt) + goto free_pf2vf_reply; + DP_VERBOSE(p_hwfn, QED_MSG_IOV, "VF's bulletin Board [%p virt 0x%llx phys 0x%08x bytes]\n", p_iov->bulletin.p_virt, @@ -578,6 +581,10 @@ int qed_vf_hw_prepare(struct qed_hwfn *p_hwfn) return rc; +free_pf2vf_reply: + dma_free_coherent(&p_hwfn->cdev->pdev->dev, + sizeof(union pfvf_tlvs), + p_iov->pf2vf_reply, p_iov->pf2vf_reply_phys); free_vf2pf_request: dma_free_coherent(&p_hwfn->cdev->pdev->dev, sizeof(union vfpf_tlvs), -- 2.34.1
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