Page MenuHomeFreeBSD
Differential D55369

arm64 iommu: fixes
Needs ReviewPublic
Actions

Authored by br on Feb 19 2026, 2:37 PM.
Tags
None
Referenced Files
Unknown Object (File)
Thu, Aug 13, 3:04 AM
Unknown Object (File)
Thu, Aug 13, 1:34 AM
Unknown Object (File)
Thu, Aug 13, 12:07 AM
Unknown Object (File)
Mon, Aug 10, 11:07 PM
Unknown Object (File)
Mon, Aug 10, 11:58 AM
Unknown Object (File)
Mon, Aug 10, 11:39 AM
Unknown Object (File)
Sun, Aug 9, 7:21 PM
Unknown Object (File)
Sun, Aug 9, 7:19 PM
View All 48 Files
Subscribers
emaste

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

Diff Detail

Lint
Lint Skipped
Unit
Tests Skipped

Revision Contents
Changeset List

PathSize
sys/
arm64/
iommu/
10 lines

Diff 172232

View Options

sys/arm64/iommu/iommu.c

Loading...