[PATCH 0/2] Fix undetected overflow when allocating IOVA

Syzkaller found this, the ALIGN() call can overflow and corrupt the allocation process. Fix the bug and add some test coverage.

Signed-off-by: Jason Gunthorpe jgg@nvidia.com

Jason Gunthorpe (2): iommufd: Prevent ALIGN() overflow iommufd/selftest: Test reserved regions near ULONG_MAX

drivers/iommu/iommufd/io_pagetable.c | 41 +++++++++++++++---------- tools/testing/selftests/iommu/iommufd.c | 18 +++++++++++ 2 files changed, 43 insertions(+), 16 deletions(-)

base-commit: 601b1d0d9395c711383452bd0d47037afbbb4bcf