Changes in fdtable_kunit.c

a1d4585be12feb09b3e66d312ceb200234164660 - Merge tag 'vfs-7.4-rc1.file' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Tue, 20 Oct 2026 05:35:50 +0200

Merge tag 'vfs-7.4-rc1.file' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfsPull file table updates from Christian Brauner: "This annotates struct fdtable's fd array with __counted_by_ptr so KASAN and the fortified functions can bounds check it against max_fds and adds a KUnit suite for fdtable. A follow-up uses __struct_size() in the test since sparse doesn't know __builtin_dynamic_object_size(). FD_PREPARE() is simplified. It was built as an ACQUIRE-style guard on infrastructure that was never needed. The ACQUIRE machinery and CLASS_INIT() go away, the variable is declared with __cleanup() directly, struct fd_prepare loses its err field since the fd either holds the descriptor or the error, and callers get a const pointer to the guard behind a UNIQUE_ID() name so they can't shadow it. Code generation is identical"* tag 'vfs-7.4-rc1.file' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: file: make struct fd_prepare const and kill its err field cleanup: remove CLASS_INIT() file: declare the FD_PREPARE() variable with __cleanup() directly file: simplify FD_PREPARE() vfs: use __struct_size() in the fdtable KUnit test vfs: Add KUnit tests for fdtable vfs: Annotate struct fdtable's fd field with __counted_by_ptr List of files: /linux/fs/tests/fdtable_kunit.c

07d35cec28c6a33d7714da6eebcf5c69644f530e - vfs: use __struct_size() in the fdtable KUnit test

Fri, 11 Sep 2026 14:47:49 +0200

vfs: use __struct_size() in the fdtable KUnit testsparse doesn't know __builtin_dynamic_object_size() and so the two sizechecks in the fdtable test fall apart on every config where the compilerhas __counted_by_ptr: fs/tests/fdtable_kunit.c:25:9: sparse: undefined identifier '__builtin_dynamic_object_size' fs/tests/fdtable_kunit.c:25:9: sparse: incompatible types for operation (==):Use __struct_size() instead. Every compiler that has __counted_by_ptr alsohas __builtin_dynamic_object_size() so it expands to the same builtin andthe test checks the same thing. sparse lacks the builtin and gets the__builtin_object_size() fallback which it does understand.Fixes: 501cbbd276b7 ("vfs: Add KUnit tests for fdtable")Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202609111337.fBSfTIpR-lkp@intel.com/Closes: https://lore.kernel.org/oe-kbuild-all/202609111828.SjerhPyO-lkp@intel.com/Signed-off-by: Christian Brauner (Amutable) List of files: /linux/fs/tests/fdtable_kunit.c

f5ae3d9f2940d7ab17f0c186bda880e13d18bde7 - Merge patch series "vfs: Annotate struct fdtable's fd field with __counted_by_ptr"

Thu, 10 Sep 2026 09:32:48 +0200

Merge patch series "vfs: Annotate struct fdtable's fd field with __counted_by_ptr"Annotate struct fdtable's fd field with __counter_by_ptr and add Kunittests for struct fdtable.* patches from https://patch.msgid.link/20260827041732.188707-1-morbo@google.com: vfs: Add KUnit tests for fdtable vfs: Annotate struct fdtable's fd field with __counted_by_ptrLink: https://patch.msgid.link/20260827041732.188707-1-morbo@google.comSigned-off-by: Christian Brauner (Amutable) List of files: /linux/fs/tests/fdtable_kunit.c

501cbbd276b77d34af20ea3dd4f897c93630bac8 - vfs: Add KUnit tests for fdtable

Thu, 27 Aug 2026 06:17:30 +0200

vfs: Add KUnit tests for fdtableThis adds a KUnit test suite for fdtable to verify correct allocation,max_fds initialization, and dynamic object size of the fd array under__counted_by_ptr when CONFIG_CC_HAS_COUNTED_BY_PTR is enabled.Signed-off-by: Bill Wendling Link: https://patch.msgid.link/20260827041732.188707-2-morbo@google.comReviewed-by: Jan Kara Signed-off-by: Christian Brauner (Amutable) List of files: /linux/fs/tests/fdtable_kunit.c