linux-kernel - [GIT PULL] Please pull IOMMUFD subsystem changes

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Message-ID: <20251218185201.GA308224@nvidia.com>
Date: Thu, 18 Dec 2025 14:52:01 -0400
From: Jason Gunthorpe <jgg@...dia.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: iommu@...ts.linux.dev, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, Kevin Tian <kevin.tian@...el.com>
Subject: [GIT PULL] Please pull IOMMUFD subsystem changes

Hi Linus,

Two fixes for the selftests that syzkaller found and two compilation fixes.

Thanks,
Jason

The following changes since commit 8f0b4cce4481fb22653697cced8d0d04027cb1e8:

  Linux 6.19-rc1 (2025-12-14 16:05:07 +1200)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd.git tags/for-linus-iommufd

for you to fetch changes up to e6a973af11135439de32ece3b9cbe3bfc043bea8:

  iommufd/selftest: Check for overflow in IOMMU_TEST_OP_ADD_RESERVED (2025-12-16 11:53:40 -0400)

----------------------------------------------------------------
iommufd 6.19 first rc pull request

Few minor fixes, other than the randconfig fix this is only relevant to
test code, not releases.

- Randconfig failure if CONFIG_DMA_SHARED_BUFFER is not set

- Remove gcc warning in kselftest

- Fix a refcount leak on an error path in the selftest support code

- Fix missing overflow checks in the selftest support code

----------------------------------------------------------------
Arnd Bergmann (1):
      iommufd: Fix building without dmabuf

Jason Gunthorpe (3):
      iommufd/selftest: Make it clearer to gcc that the access is not out of bounds
      iommufd/selftest: Do not leak the hwpt if IOMMU_TEST_OP_MD_CHECK_MAP fails
      iommufd/selftest: Check for overflow in IOMMU_TEST_OP_ADD_RESERVED

 drivers/iommu/iommufd/io_pagetable.c    |  6 +++++-
 drivers/iommu/iommufd/selftest.c        | 14 +++++++++++---
 tools/testing/selftests/iommu/iommufd.c |  8 +++-----
 3 files changed, 19 insertions(+), 9 deletions(-)

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