Page MenuHomeFreeBSD
Differential D20505

very large dma mappings can cause integer overflow
ClosedPublic
Actions

Authored by tychon on Jun 3 2019, 5:10 PM.
Tags
None
Referenced Files
Unknown Object (File)
Sat, May 16, 2:03 PM
Unknown Object (File)
Fri, May 15, 1:41 AM
Unknown Object (File)
Thu, May 14, 6:34 PM
Unknown Object (File)
Tue, May 12, 1:16 AM
Unknown Object (File)
Sun, May 3, 11:14 AM
Unknown Object (File)
Sun, Apr 26, 12:37 PM
Unknown Object (File)
Apr 14 2026, 6:28 AM
Unknown Object (File)
Apr 14 2026, 12:11 AM
View All Files
Subscribers
andrew
emaste
imp

Details

Reviewers
kib
jhb
manu
Commits
rS348571: very large dma mappings can cause integer overflow
Summary

Some integer overflow issues can occur with (very) large DMA mappings. In dmar_bus_dmamap_load_phys() this causes the miscomputation of a physical address. In _bus_dmamap_addseg() it causes a segment to appear truncated.

Diff Detail

Repository
rS FreeBSD src repository - subversion
Lint
Lint Not Applicable
Unit
Tests Not Applicable

Revision Contents
Changeset List

PathSize
head/
sys/
arm64/
arm64/
2 lines
x86/
iommu/
2 lines
x86/
2 lines

Diff 58200

View Options

head/sys/arm64/arm64/busdma_bounce.c

Loading...
View Options

head/sys/x86/iommu/busdma_dmar.c

Loading...
View Options

head/sys/x86/x86/busdma_bounce.c

Loading...