This started with a patch that enabled `clippy::ptr_as_ptr`. Benno Lossin suggested I also look into `clippy::ptr_cast_constness` and I discovered `clippy::as_ptr_cast_mut`. This series now enables all 3 lints. It also enables `clippy::as_underscore` which ensures other pointer casts weren't missed. The first commit reduces the need for pointer casts and is shared with another series[1].
The final patch also enables pointer provenance lints and fixes violations. See that commit message for details. The build system portion of that commit is pretty messy but I couldn't find a better way to convincingly ensure that these lints were applied globally. Suggestions would be very welcome.
Link: https://lore.kernel.org/all/20250307-no-offset-v1-0-0c728f63b69c@gmail.com/ [1]
Signed-off-by: Tamir Duberstein tamird@gmail.com --- Changes in v4: - Add missing SoB. (Benno Lossin) - Use `without_provenance_mut` in alloc. (Boqun Feng) - Limit strict provenance lints to the `kernel` crate to avoid complex logic in the build system. This can be revisited on MSRV >= 1.84.0. - Rebase on rust-next. - Link to v3: https://lore.kernel.org/r/20250314-ptr-as-ptr-v3-0-e7ba61048f4a@gmail.com
Changes in v3: - Fixed clippy warning in rust/kernel/firmware.rs. (kernel test robot) Link: https://lore.kernel.org/all/202503120332.YTCpFEvv-lkp@intel.com/ - s/as u64/as bindings::phys_addr_t/g. (Benno Lossin) - Use strict provenance APIs and enable lints. (Benno Lossin) - Link to v2: https://lore.kernel.org/r/20250309-ptr-as-ptr-v2-0-25d60ad922b7@gmail.com
Changes in v2: - Fixed typo in first commit message. - Added additional patches, converted to series. - Link to v1: https://lore.kernel.org/r/20250307-ptr-as-ptr-v1-1-582d06514c98@gmail.com
--- Tamir Duberstein (6): rust: retain pointer mut-ness in `container_of!` rust: enable `clippy::ptr_as_ptr` lint rust: enable `clippy::ptr_cast_constness` lint rust: enable `clippy::as_ptr_cast_mut` lint rust: enable `clippy::as_underscore` lint rust: use strict provenance APIs
Makefile | 4 +++ init/Kconfig | 3 ++ rust/bindings/lib.rs | 1 + rust/kernel/alloc.rs | 2 +- rust/kernel/alloc/allocator_test.rs | 2 +- rust/kernel/alloc/kvec.rs | 4 +-- rust/kernel/block/mq/operations.rs | 2 +- rust/kernel/block/mq/request.rs | 7 +++-- rust/kernel/device.rs | 5 +-- rust/kernel/device_id.rs | 2 +- rust/kernel/devres.rs | 19 ++++++------ rust/kernel/error.rs | 2 +- rust/kernel/firmware.rs | 3 +- rust/kernel/fs/file.rs | 2 +- rust/kernel/io.rs | 16 +++++----- rust/kernel/kunit.rs | 15 +++++---- rust/kernel/lib.rs | 57 ++++++++++++++++++++++++++++++++-- rust/kernel/list/impl_list_item_mod.rs | 2 +- rust/kernel/miscdevice.rs | 2 +- rust/kernel/of.rs | 6 ++-- rust/kernel/pci.rs | 15 +++++---- rust/kernel/platform.rs | 6 ++-- rust/kernel/print.rs | 11 +++---- rust/kernel/rbtree.rs | 23 ++++++-------- rust/kernel/seq_file.rs | 3 +- rust/kernel/str.rs | 18 +++++------ rust/kernel/sync/poll.rs | 2 +- rust/kernel/uaccess.rs | 12 ++++--- rust/kernel/workqueue.rs | 12 +++---- rust/uapi/lib.rs | 1 + 30 files changed, 162 insertions(+), 97 deletions(-) --- base-commit: 2aadc0fc1f85d7a9ed2822ba7ee9f06775eb6d84 change-id: 20250307-ptr-as-ptr-21b1867fc4d4
Best regards,