[PATCH v3 06/28] objtool: Ignore traps after noreturn calls in STT_CODE

[Josh Poimboeuf <jpoimboe@kernel.org>]

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 <jpoimboe@kernel.org>
---
 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