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Differential D55369

arm64 iommu: fixes
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Authored by br on Feb 19 2026, 2:37 PM.
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Details

Reviewers
andrew
manu
Summary
  1. fix use after free (dereference of ioctx after freeing it)
  2. tag is destroyed by iommu_bus_dma_tag_destroy() after calling to iommu_free_ctx_locked() here https://github.com/freebsd/freebsd-src/blob/main/sys/dev/iommu/busdma_iommu.c#L450
Test Plan

Tested on RISC-V IOMMU

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PathSize
sys/
arm64/
iommu/
10 lines

Diff 172232

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sys/arm64/iommu/iommu.c

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