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scsi: hisi_sas: Drop free_irq() of devm_request_irq() allocated irq

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[ Upstream commit 7907a021e4 ]

irqs allocated with devm_request_irq() should not be freed using
free_irq(). Doing so causes a dangling pointer and a subsequent double
free.

Link: https://lore.kernel.org/r/20210519130519.2661938-1-yangyingliang@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Acked-by: John Garry <john.garry@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yang Yingliang
2021-05-19 21:05:19 +08:00
committed by Greg Kroah-Hartman
parent eac1d159b7
commit 1676363528
1 changed files with 4 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
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@@ -3359,14 +3359,14 @@ hisi_sas_v3_destroy_irqs(struct pci_dev *pdev, struct hisi_hba *hisi_hba)
{
int i;
free_irq(pci_irq_vector(pdev, 1), hisi_hba);
free_irq(pci_irq_vector(pdev, 2), hisi_hba);
free_irq(pci_irq_vector(pdev, 11), hisi_hba);
devm_free_irq(&pdev->dev, pci_irq_vector(pdev, 1), hisi_hba);
devm_free_irq(&pdev->dev, pci_irq_vector(pdev, 2), hisi_hba);
devm_free_irq(&pdev->dev, pci_irq_vector(pdev, 11), hisi_hba);
for (i = 0; i < hisi_hba->cq_nvecs; i++) {
struct hisi_sas_cq *cq = &hisi_hba->cq[i];
int nr = hisi_sas_intr_conv ? 16 : 16 + i;
free_irq(pci_irq_vector(pdev, nr), cq);
devm_free_irq(&pdev->dev, pci_irq_vector(pdev, nr), cq);
}
pci_free_irq_vectors(pdev);
}