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objtool/rust: add one more noreturn Rust function for Rust 1.101.0

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Starting with Rust 1.101.0 (expected 2026-12-24), `objtool` may report:

    rust/kernel.o: warning: objtool: _R..._4core6result13unwrap_failed...()
    falls through to next function _R..._4core6result13unwrap_failed...()

(and others) due to calls to the `noreturn` symbol:

    core::result::unwrap_failed::unwrap_failed_inner

Rust introduced this helper when making `unwrap_failed` generic [1]. The
existing entry for `unwrap_failed` does not match the new helper.

Thus add the mangled one to the list so that `objtool` knows it is
actually `noreturn`.

See commit 56d680dd23 ("objtool/rust: list `noreturn` Rust functions")
for more details.

Cc: stable@vger.kernel.org # Needed in 6.12.y and later (Rust is pinned in older LTSs).
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://github.com/rust-lang/rust/pull/164059 [1]
Assisted-by: LLM
Link: https://patch.msgid.link/20261018131313.59391-1-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
This commit is contained in:
Miguel Ojeda 2026-10-18 15:13:13 +02:00
parent 10ff62c6bb
commit 6b704ec900
1 changed files with 1 additions and 0 deletions
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1
tools/objtool/check.c
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@ -201,6 +201,7 @@ static bool is_rust_noreturn(const struct symbol *func)
str_ends_with(func->name, "_4core6option13expect_failed") ||
str_ends_with(func->name, "_4core6option13unwrap_failed") ||
str_ends_with(func->name, "_4core6result13unwrap_failed") ||
str_ends_with(func->name, "_4core6result13unwrap_failed19unwrap_failed_inner") ||
str_ends_with(func->name, "_4core9panicking5panic") ||
str_ends_with(func->name, "_4core9panicking9panic_fmt") ||
str_ends_with(func->name, "_4core9panicking14panic_explicit") ||