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Daniel Xu 7968c65815 bpf: verifier: Disambiguate get_constant_map_key() errors
Refactor get_constant_map_key() to disambiguate the constant key
value from potential error values. In the case that the key is
negative, it could be confused for an error.

It's not currently an issue, as the verifier seems to track s32 spills
as u32. So even if the program wrongly uses a negative value for an
arraymap key, the verifier just thinks it's an impossibly high value
which gets correctly discarded.

Refactor anyways to make things cleaner and prevent potential future
issues.

Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Daniel Xu <dxu@dxuuu.xyz>
Link: https://lore.kernel.org/r/dfe144259ae7cfc98aa63e1b388a14869a10632a.1738689872.git.dxu@dxuuu.xyz
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-02-07 15:45:44 -08:00
arch Fix a build regression on certain config and build environment 2025-01-28 14:32:03 -08:00
block Driver core and debugfs updates 2025-01-28 12:25:12 -08:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto This update includes the following changes: 2025-01-24 07:48:10 -08:00
Documentation strparser: Add read_sock callback 2025-01-29 13:32:08 -08:00
drivers VFIO updates for v6.14-rc1 2025-01-28 14:16:46 -08:00
fs NFS Client Updates for Linux 6.14 2025-01-28 14:23:46 -08:00
include bpf: Fix wrong copied_seq calculation 2025-01-29 13:32:23 -08:00
init drm merge window fixes part 1 2025-01-27 17:17:16 -08:00
io_uring The various patchsets are summarized below. Plus of course many 2025-01-26 18:36:23 -08:00
ipc ipc/util.c: complete the kernel-doc function descriptions 2025-01-24 22:47:27 -08:00
kernel bpf: verifier: Disambiguate get_constant_map_key() errors 2025-02-07 15:45:44 -08:00
lib Driver core and debugfs updates 2025-01-28 12:25:12 -08:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm Driver core and debugfs updates 2025-01-28 12:25:12 -08:00
net bpf: Disable non stream socket for strparser 2025-01-29 13:32:32 -08:00
rust Driver core and debugfs updates 2025-01-28 12:25:12 -08:00
samples Driver core and debugfs updates 2025-01-28 12:25:12 -08:00
scripts Char/Misc/IIO driver updates for 6.14-rc1 2025-01-27 16:51:51 -08:00
security Mainly individually changelogged singleton patches. The patch series in 2025-01-26 17:50:53 -08:00
sound Driver core and debugfs updates 2025-01-28 12:25:12 -08:00
tools bpf: selftests: Test constant key extraction on irrelevant maps 2025-02-07 15:45:44 -08:00
usr kbuild: Drop support for include/asm-<arch> in headers_check.pl 2024-12-21 11:43:17 +09:00
virt Merge branch 'kvm-mirror-page-tables' into HEAD 2025-01-20 07:15:58 -05:00
.clang-format clang-format: Update with v6.11-rc1's for_each macro list 2024-08-02 13:20:31 +02:00
.clippy.toml rust: give Clippy the minimum supported Rust version 2025-01-10 00:17:25 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: Retire Ralf Baechle 2024-11-12 15:48:59 +01:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore rust: use host dylib naming convention to support macOS 2025-01-10 01:01:24 +01:00
.mailmap Mainly individually changelogged singleton patches. The patch series in 2025-01-26 17:50:53 -08:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS Mainly individually changelogged singleton patches. The patch series in 2025-01-26 17:50:53 -08:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Driver core and debugfs updates 2025-01-28 12:25:12 -08:00
Makefile Networking changes for 6.14. 2025-01-22 08:28:57 -08:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.