Commit a215ce8f authored Mar 01, 2019 by Linus Torvalds

iommu

Pull IOMMU fix from Joerg Roedel:
 "One important fix for a memory corruption issue in the Intel VT-d
  driver that triggers on hardware with deep PCI hierarchies"

* tag 'iommu-fix-v5.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/dmar: Fix buffer overflow during PCI bus notification

parents 2d28e01d cffaaf0c

drivers/iommu/dmar.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -144,7 +144,7 @@ dmar_alloc_pci_notify_info(struct pci_dev *dev, unsigned long event)
		for (tmp = dev; tmp; tmp = tmp->bus->self)
		level++;

		size = sizeof(info) + level sizeof(struct acpi_dmar_pci_path);
		size = sizeof(info) + level sizeof(info->path[0]);
		if (size <= sizeof(dmar_pci_notify_info_buf)) {
		info = (struct dmar_pci_notify_info *)dmar_pci_notify_info_buf;
		} else {