Unverified Commit e3cd8c9a authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!4112 PCI: Fail MSI-X mapping if MSI-X Table offset is out of range of BAR space 

Merge Pull Request from: @ci-robot 
 
PR sync from: Xiongfeng Wang <wangxiongfeng2@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/YTC5WZ3D2YPOHE5IPCS6JKXHRPSYNEOP/ 
 
https://gitee.com/openeuler/kernel/issues/I8XWBL 
 
Link:https://gitee.com/openeuler/kernel/pulls/4112

 

Reviewed-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
Acked-by: default avatarXie XiuQi <xiexiuqi@huawei.com>
parents 8d81b3eb dc63fbe3

drivers/pci/msi/msi.c

+6 −0
Original line number Diff line number Diff line
@@ -584,6 +584,12 @@ static void __iomem *msix_map_region(struct pci_dev *dev, 
		return NULL;



	table_offset &= PCI_MSIX_TABLE_OFFSET;

	if (table_offset >= pci_resource_len(dev, bir)) {

		dev_err(&dev->dev,

			"MSI-X Table offset is out of range of BAR:%d!\n",

			bir);

		return NULL;

	}

	phys_addr = pci_resource_start(dev, bir) + table_offset;



	return ioremap(phys_addr, nr_entries * PCI_MSIX_ENTRY_SIZE);