From: Jason Gunthorpe <jgg@nvidia.com>
To: iommu@lists.linux.dev, Joerg Roedel <joro@8bytes.org>,
Kevin Tian <kevin.tian@intel.com>,
linux-kselftest@vger.kernel.org,
Robin Murphy <robin.murphy@arm.com>,
Shuah Khan <shuah@kernel.org>, Will Deacon <will@kernel.org>
Cc: Lixiao Yang <lixiao.yang@intel.com>,
Matthew Rosato <mjrosato@linux.ibm.com>,
Nicolin Chen <nicolinc@nvidia.com>,
patches@lists.linux.dev, stable@vger.kernel.org,
syzbot+c2f65e2801743ca64e08@syzkaller.appspotmail.com,
Yi Liu <yi.l.liu@intel.com>
Subject: [PATCH 0/2] Fix undetected overflow when allocating IOVA
Date: Thu, 17 Jul 2025 16:15:07 -0300 [thread overview]
Message-ID: <0-v1-7b4a16fc390b+10f4-iommufd_alloc_overflow_jgg@nvidia.com> (raw)
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
--
2.43.0
next reply other threads:[~2025-07-17 19:15 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-17 19:15 Jason Gunthorpe [this message]
2025-07-17 19:15 ` [PATCH 1/2] iommufd: Prevent ALIGN() overflow Jason Gunthorpe
2025-07-18 8:16 ` Nicolin Chen
2025-07-18 13:03 ` Yi Liu
2025-07-17 19:15 ` [PATCH 2/2] iommufd/selftest: Test reserved regions near ULONG_MAX Jason Gunthorpe
2025-07-17 19:15 ` kernel test robot
2025-07-18 2:45 ` Nicolin Chen
2025-07-18 8:13 ` Nicolin Chen
2025-07-18 16:21 ` Jason Gunthorpe
2025-07-18 18:23 ` Robin Murphy
2025-07-18 18:50 ` Nicolin Chen
2025-07-18 20:16 ` Jason Gunthorpe
2025-07-18 19:56 ` Jason Gunthorpe
2025-07-18 13:03 ` Yi Liu
2025-07-18 18:10 ` [PATCH 0/2] Fix undetected overflow when allocating IOVA Nicolin Chen
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