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[180.39.242.157]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a2f3d74ba5sm123753145ad.89.2025.12.23.03.39.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Dec 2025 03:39:23 -0800 (PST) From: FUJITA Tomonori To: jpoimboe@kernel.org, peterz@infradead.org, ojeda@kernel.org Cc: a.hindborg@kernel.org, aliceryhl@google.com, bjorn3_gh@protonmail.com, boqun.feng@gmail.com, dakr@kernel.org, gary@garyguo.net, lossin@kernel.org, tmgross@umich.edu, linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org Subject: [PATCH v1] objtool/rust: add one more `noreturn` Rust function Date: Tue, 23 Dec 2025 20:35:38 +0900 Message-ID: <20251223113538.1016078-1-fujita.tomonori@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Fix the follwoing warning: rust/kernel.o: warning: objtool: _RNvXNtNtCs1ewLyjEZ7Le_6kernel3str9parse_i= ntaNtNtB2_7private12FromStrRadix14from_str_radix() falls through to next function _RNvXNtNtCs1ewLyjEZ7Le_6kernel3str9parse_int= aNtNtB2_7private12FromStrRadix16from_u64_negated() The commit 51d9ee90ea90 ("rust: str: add radix prefixed integer parsing functions") introduces u64::from_str_radix(), whose implementation contains a panic path for out-of-range radix values. The panic helper is core::num::from_ascii_radix_panic(). Note that radix is derived from strip_radix() here and is always within the valid range, so kernel never panics. Fixes: 51d9ee90ea90 ("rust: str: add radix prefixed integer parsing functio= ns") Signed-off-by: FUJITA Tomonori Reviewed-by: Alice Ryhl Tested-by: Alice Ryhl --- tools/objtool/check.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 3f7999317f4d..719ec727efd4 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -197,7 +197,8 @@ static bool is_rust_noreturn(const struct symbol *func) * as well as changes to the source code itself between versions (since * these come from the Rust standard library). */ - return str_ends_with(func->name, "_4core5sliceSp15copy_from_slice17len_mi= smatch_fail") || + return str_ends_with(func->name, "_4core3num22from_ascii_radix_panic") = || + str_ends_with(func->name, "_4core5sliceSp15copy_from_slice17len_mi= smatch_fail") || str_ends_with(func->name, "_4core6option13expect_failed") || str_ends_with(func->name, "_4core6option13unwrap_failed") || str_ends_with(func->name, "_4core6result13unwrap_failed") || base-commit: b927546677c876e26eba308550207c2ddf812a43 --=20 2.43.0