Re: [Patch V3 0/2] iommu/arm-smmu: Fix races in iommu domain/group creation
flat view
From: Will Deacon <will@kernel.org>
Date: 2021-08-10 20:26:06
Also in:
linux-iommu, lkml
On Tue, 10 Aug 2021 10:13:59 +0530, Ashish Mhetre wrote:
When two devices with same SID are getting probed concurrently through iommu_probe_device(), the iommu_group and iommu_domain are allocated more than once because they are not protected for concurrency. This is leading to context faults when one device is accessing IOVA from other device. Fix this by protecting iommu_domain and iommu_group creation with mutexes. Changes in v3: * Updated commit messages. * Added Signed-off-by in patch 2. [...]
Applied to will (for-joerg/arm-smmu/updates), thanks!
[1/2] iommu: Fix race condition during default domain allocation
https://git.kernel.org/will/c/211ff31b3d33
[2/2] iommu/arm-smmu: Fix race condition during iommu_group creation
https://git.kernel.org/will/c/b1a1347912a7
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
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