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| author | Eduard Zingerman <eddyz87@gmail.com> | 2026-09-04 17:05:56 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 18:17:30 -0700 |
| commit | 506ada89629ec7059b96ecfb0dc7d33ece0103ca (patch) | |
| tree | 0b07297409b68d2333fb4f0eae7f3b072eb68d4c /rust/uapi | |
| download | linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.tar.gz linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.zip | |
bpf: mark a NULL kfunc argument precisegrafted
check_kfunc_arg() allows bpf_register_is_null() for nullable arguments
w/o marking the underlying scalar register precise. Hence a checkpoint
created on such a path would prune against arbitrary scalar value.
Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)")
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'rust/uapi')
| -rw-r--r-- | rust/uapi/lib.rs | 40 | ||||
| -rw-r--r-- | rust/uapi/uapi_helper.h | 16 |
2 files changed, 56 insertions, 0 deletions
diff --git a/rust/uapi/lib.rs b/rust/uapi/lib.rs new file mode 100644 index 000000000..797ead5b5 --- /dev/null +++ b/rust/uapi/lib.rs @@ -0,0 +1,40 @@ +// SPDX-License-Identifier: GPL-2.0 + +//! UAPI Bindings. +//! +//! Contains the bindings generated by `bindgen` for UAPI interfaces. +//! +//! This crate may be used directly by drivers that need to interact with +//! userspace APIs. + +#![no_std] +#![allow( + clippy::all, + clippy::cast_lossless, + clippy::ptr_as_ptr, + clippy::ref_as_ptr, + clippy::undocumented_unsafe_blocks, + dead_code, + missing_docs, + non_camel_case_types, + non_upper_case_globals, + non_snake_case, + improper_ctypes, + unreachable_pub, + unsafe_op_in_unsafe_fn +)] +#![cfg_attr(CONFIG_RUSTC_HAS_UNNECESSARY_TRANSMUTES, allow(unnecessary_transmutes))] +#![cfg_attr( + CONFIG_RUSTC_HAS_SUSPICIOUS_RUNTIME_SYMBOL_DEFINITIONS, + allow(suspicious_runtime_symbol_definitions) +)] +#![feature(cfi_encoding)] + +// Manual definition of blocklisted types. +type __kernel_size_t = usize; +type __kernel_ssize_t = isize; +type __kernel_ptrdiff_t = isize; + +use pin_init::MaybeZeroable; + +include!(concat!(env!("OBJTREE"), "/rust/uapi/uapi_generated.rs")); diff --git a/rust/uapi/uapi_helper.h b/rust/uapi/uapi_helper.h new file mode 100644 index 000000000..1c4aa4292 --- /dev/null +++ b/rust/uapi/uapi_helper.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Header that contains the headers for which Rust UAPI bindings + * will be automatically generated by `bindgen`. + * + * Sorted alphabetically. + */ + +#include <uapi/drm/drm.h> +#include <uapi/drm/nova_drm.h> +#include <uapi/drm/panthor_drm.h> +#include <uapi/linux/android/binder.h> +#include <uapi/linux/ioctl.h> +#include <uapi/linux/mdio.h> +#include <uapi/linux/mii.h> +#include <uapi/linux/ethtool.h> |