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b1a1347912
linux/drivers/iommu
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Krishna Reddy b1a1347912 iommu/arm-smmu: Fix race condition during iommu_group creation 
When two devices with same SID are getting probed concurrently through
iommu_probe_device(), the iommu_group sometimes is getting allocated more
than once as call to arm_smmu_device_group() is not protected for
concurrency. Furthermore, it leads to each device holding a different
iommu_group and domain pointer, separate IOVA space and only one of the
devices' domain is used for translations from IOMMU. This causes accesses
from other device to fault or see incorrect translations.
Fix this by protecting iommu_group allocation from concurrency in
arm_smmu_device_group().

Signed-off-by: Krishna Reddy <vdumpa@nvidia.com>
Signed-off-by: Ashish Mhetre <amhetre@nvidia.com>
Link: https://lore.kernel.org/r/1628570641-9127-3-git-send-email-amhetre@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
2021-08-10 19:19:18 +01:00
..
amd Merge branches 'iommu/fixes', 'arm/rockchip', 'arm/smmu', 'x86/vt-d', 'x86/amd', 'virtio' and 'core' into next 2021-06-25 15:23:25 +02:00
arm iommu/arm-smmu: Fix race condition during iommu_group creation 2021-08-10 19:19:18 +01:00
intel iommu/vt-d: Fix clearing real DMA device's scalable-mode context entries 2021-07-14 12:58:07 +02:00
dma-iommu.c Merge branches 'iommu/fixes', 'arm/rockchip', 'arm/smmu', 'x86/vt-d', 'x86/amd', 'virtio' and 'core' into next 2021-06-25 15:23:25 +02:00
exynos-iommu.c iommu: Drop unnecessary of_iommu.h includes 2021-06-08 14:15:46 +02:00
fsl_pamu_domain.c iommu: Streamline registration interface 2021-04-16 17:20:45 +02:00
fsl_pamu_domain.h iommu/fsl_pamu: remove the snoop_id field 2021-04-07 10:56:52 +02:00
fsl_pamu.c iommu/fsl_pamu: hardcode the window address and size in pamu_config_ppaace 2021-04-07 10:56:52 +02:00
fsl_pamu.h iommu/fsl_pamu: hardcode the window address and size in pamu_config_ppaace 2021-04-07 10:56:52 +02:00
hyperv-iommu.c iommu/hyperv: setup an IO-APIC IRQ remapping domain for root partition 2021-02-11 08:47:07 +00:00
io-pgfault.c iommu: Add a page fault handler 2021-04-07 10:54:29 +02:00
io-pgtable-arm-v7s.c iommu/io-pgtable-arm-v7s: Quad lvl1 pgtable for MediaTek 2021-02-01 11:31:17 +00:00
io-pgtable-arm.c IOMMU updates for 5.11 2020-12-16 13:58:47 -08:00
io-pgtable-arm.h iommu/io-pgtable-arm: Move some definitions to a header 2020-09-28 23:48:06 +01:00
io-pgtable.c iommu/amd: Prepare for generic IO page table framework 2021-01-28 16:51:17 +01:00
ioasid.c iommu/ioasid: Add ioasid references 2020-11-23 14:16:55 +00:00
iommu-debugfs.c
iommu-sva-lib.c iommu/sva: Add PASID helpers 2020-11-23 14:16:55 +00:00
iommu-sva-lib.h iommu: Add a page fault handler 2021-04-07 10:54:29 +02:00
iommu-sysfs.c
iommu-traces.c
iommu.c iommu: Fix race condition during default domain allocation 2021-08-10 19:19:18 +01:00
iova.c iommu/iova: Put free_iova_mem() outside of spinlock iova_rbtree_lock 2021-06-08 14:15:46 +02:00
ipmmu-vmsa.c iommu: Drop unnecessary of_iommu.h includes 2021-06-08 14:15:46 +02:00
irq_remapping.c x86: Kill all traces of irq_remapping_get_irq_domain() 2020-10-28 20:26:28 +01:00
irq_remapping.h x86: Kill all traces of irq_remapping_get_irq_domain() 2020-10-28 20:26:28 +01:00
Kconfig iommu/virtio: Enable x86 support 2021-06-25 15:02:43 +02:00
Makefile Merge branches 'iommu/fixes', 'arm/mediatek', 'arm/smmu', 'arm/exynos', 'unisoc', 'x86/vt-d', 'x86/amd' and 'core' into next 2021-04-16 17:16:03 +02:00
msm_iommu_hw-8xxx.h
msm_iommu.c iommu: Drop unnecessary of_iommu.h includes 2021-06-08 14:15:46 +02:00
msm_iommu.h
mtk_iommu_v1.c iommu: Drop unnecessary of_iommu.h includes 2021-06-08 14:15:46 +02:00
mtk_iommu.c iommu: Drop unnecessary of_iommu.h includes 2021-06-08 14:15:46 +02:00
mtk_iommu.h iommu/mediatek: Add mt8192 support 2021-02-01 11:31:19 +00:00
of_iommu.c iommu: Remove unused of_get_dma_window() 2021-06-08 14:15:46 +02:00
omap-iommu-debug.c iommu/omap: Check for failure of a call to omap_iommu_dump_ctx 2020-07-22 15:02:33 +02:00
omap-iommu.c iommu: Drop unnecessary of_iommu.h includes 2021-06-08 14:15:46 +02:00
omap-iommu.h
omap-iopgtable.h iommu/omap: Fix -Woverflow warnings when compiling on 64-bit architectures 2020-03-04 16:24:46 +01:00
rockchip-iommu.c iommu/rockchip: Fix physical address decoding 2021-07-14 12:58:07 +02:00
s390-iommu.c iommu: Streamline registration interface 2021-04-16 17:20:45 +02:00
sprd-iommu.c iommu: Streamline registration interface 2021-04-16 17:20:45 +02:00
sun50i-iommu.c iommu: Streamline registration interface 2021-04-16 17:20:45 +02:00
tegra-gart.c iommu: Streamline registration interface 2021-04-16 17:20:45 +02:00
tegra-smmu.c memory: tegra: Consolidate register fields 2021-06-03 21:49:40 +02:00
virtio-iommu.c Merge branches 'iommu/fixes', 'arm/rockchip', 'arm/smmu', 'x86/vt-d', 'x86/amd', 'virtio' and 'core' into next 2021-06-25 15:23:25 +02:00