From 6b704ec9007a3f23ec5ded8f320825ac444f307d Mon Sep 17 00:00:00 2001 From: Miguel Ojeda Date: Sun, 18 Oct 2026 15:13:13 +0200 Subject: [PATCH] objtool/rust: add one more `noreturn` Rust function for Rust 1.101.0 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 56d680dd23c3 ("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 Cc: Peter Zijlstra 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 --- tools/objtool/check.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 464f6c9d9ff0..931c5c412f15 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -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") ||