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linux-sg2042/drivers/iommu
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Julian Stecklina f9423606ad iommu/vt-d: Fixed interaction of VFIO_IOMMU_MAP_DMA with IOMMU address limits 
The BUG_ON in drivers/iommu/intel-iommu.c:785 can be triggered from userspace via
VFIO by calling the VFIO_IOMMU_MAP_DMA ioctl on a vfio device with any address
beyond the addressing capabilities of the IOMMU. The problem is that the ioctl code
calls iommu_iova_to_phys before it calls iommu_map. iommu_map handles the case that
it gets addresses beyond the addressing capabilities of its IOMMU.
intel_iommu_iova_to_phys does not.

This patch fixes iommu_iova_to_phys to return NULL for addresses beyond what the
IOMMU can handle. This in turn causes the ioctl call to fail in iommu_map and
(correctly) return EFAULT to the user with a helpful warning message in the kernel
log.

Signed-off-by: Julian Stecklina <jsteckli@os.inf.tu-dresden.de>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
 		2013-11-01 12:46:25 +01:00
..
Kconfig iommu/fsl: Freescale PAMU driver and iommu implementation. 2013-08-14 11:38:34 +02:00
Makefile iommu/fsl: Freescale PAMU driver and iommu implementation. 2013-08-14 11:38:34 +02:00
amd_iommu.c iommu/amd: Fix resource leak in iommu_init_device() 2013-08-14 22:15:46 +02:00
amd_iommu_init.c iommu/amd: Clean up unnecessary MSI/MSI-X capability find 2013-08-14 12:18:52 +02:00
amd_iommu_proto.h perf/x86/amd: Add IOMMU Performance Counter resource management 2013-06-19 13:04:52 +02:00
amd_iommu_types.h perf/x86/amd: Add IOMMU Performance Counter resource management 2013-06-19 13:04:52 +02:00
amd_iommu_v2.c IOMMU Updates for Linux v3.6-rc1 2012-07-24 16:24:11 -07:00
arm-smmu.c iommu/arm-smmu: Simplify VMID and ASID allocation 2013-08-14 12:10:02 +02:00
dmar.c iommu/vt-d: DMAR reporting table needs at least one DRHD 2013-06-20 16:39:28 +02:00
exynos-iommu.c iommu/exynos: Remove dead code (set_prefbuf) 2013-08-14 11:28:45 +02:00
fsl_pamu.c iommu/fsl: Remove unnecessary 'fsl-pamu' prefixes 2013-08-14 11:44:30 +02:00
fsl_pamu.h iommu/fsl: Freescale PAMU driver and iommu implementation. 2013-08-14 11:38:34 +02:00
fsl_pamu_domain.c iommu/fsl: Fix whitespace problems noticed by git-am 2013-08-14 11:42:29 +02:00
fsl_pamu_domain.h iommu/fsl: Freescale PAMU driver and iommu implementation. 2013-08-14 11:38:34 +02:00
intel-iommu.c iommu/vt-d: Fixed interaction of VFIO_IOMMU_MAP_DMA with IOMMU address limits 2013-11-01 12:46:25 +01:00
intel_irq_remapping.c iommu: Remove stack trace from broken irq remapping warning 2013-10-04 16:19:26 +02:00
iommu.c iommu: Use %pa and %zx instead of casting 2013-06-24 12:31:49 +02:00
iova.c iommu: Fix typo in iommu 2012-07-24 12:58:49 +02:00
irq_remapping.c x86/MSI: Conserve interrupt resources when using multiple-MSIs 2013-06-03 14:40:44 -06:00
irq_remapping.h iommu/vt-d: add quirk for broken interrupt remapping on 55XX chipsets 2013-04-18 17:00:47 +02:00
msm_iommu.c iommu/msm: Move mach includes to iommu directory 2013-08-06 11:18:03 -07:00
msm_iommu.h iommu/msm: Move mach includes to iommu directory 2013-08-06 11:18:03 -07:00
msm_iommu_dev.c drivers/iommu: remove unnecessary platform_set_drvdata() 2013-09-11 15:56:24 -07:00
msm_iommu_hw-8xxx.h iommu/msm: Move mach includes to iommu directory 2013-08-06 11:18:03 -07:00
of_iommu.c iommu: Add DMA window parser, of_get_dma_window() 2012-06-25 13:50:28 +02:00
omap-iommu-debug.c ARM: OMAP2+: Move iommu/iovmm headers to platform_data 2012-11-20 10:05:01 -08:00
omap-iommu.c drivers/iommu: remove unnecessary platform_set_drvdata() 2013-09-11 15:56:24 -07:00
omap-iommu.h iommu/omap: Adapt to runtime pm 2012-12-03 18:48:23 +01:00
omap-iommu2.c iommu/omap: Adapt to runtime pm 2012-12-03 18:48:23 +01:00
omap-iopgtable.h iommu/omap: fix checkpatch warnings in omap iommu code 2013-06-20 16:53:26 +02:00
omap-iovmm.c iommu/omap: fix checkpatch warnings in omap iommu code 2013-06-20 16:53:26 +02:00
pci.h iommu: Move swap_pci_ref function to drivers/iommu/pci.h. 2013-04-23 14:55:00 +02:00
shmobile-iommu.c iommu/fsl: Make iova dma_addr_t in the iommu_iova_to_phys API. 2013-04-02 18:20:53 +02:00
shmobile-ipmmu.c iommu/shmobile: Add iommu driver for Renesas IPMMU modules 2013-02-06 10:57:25 +01:00
shmobile-ipmmu.h iommu/shmobile: Add iommu driver for Renesas IPMMU modules 2013-02-06 10:57:25 +01:00
tegra-gart.c Merge branches 'iommu/fixes', 'x86/vt-d', 'x86/amd', 'ppc/pamu', 'core' and 'arm/tegra' into next 2013-05-02 12:10:19 +02:00
tegra-smmu.c tegra: simplify use of devm_ioremap_resource 2013-08-15 16:04:42 -06:00