# \[PATCH v2 06/27\] objtool: Ignore traps after noreturn calls in STT\_CODE - From: Josh Poimboeuf \ - Date: 2026-09-08 20:34:31 - List: rust-for-linux - Page: https://ratatoskr.run/rust-for-linux/2026/09/17533660 - Thread: https://ratatoskr.run/rust-for-linux/2026/09/17533657/t.md ```text Objtool doesn't do unreachable warnings for traps after noreturn calls, but only in functions. Loongarch assembly STT_CODE can have the same pattern: bl start_kernel ASM_BUG() Ignore those as well. Signed-off-by: Josh Poimboeuf --- tools/objtool/check.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 83b4e748d33ba..f65b1b01b4fe9 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -4271,12 +4271,6 @@ static bool ignore_unreachable_insn(struct objtool_file *file, struct instructio !strcmp(insn->sec->name, ".altinstr_aux")) return true; - if (!func) - return false; - - if (func->static_call_tramp) - return true; - /* * CONFIG_UBSAN_TRAP inserts a UD2 when it sees * __builtin_unreachable(). The BUG() macro has an unreachable() after @@ -4292,6 +4286,12 @@ static bool ignore_unreachable_insn(struct objtool_file *file, struct instructio insn->jump_dest && insn->jump_dest->type == INSN_BUG))) return true; + if (!func) + return false; + + if (func->static_call_tramp) + return true; + /* * Check if this (or a subsequent) instruction is related to * CONFIG_UBSAN or CONFIG_KASAN. -- 2.55.0 ```