From 9f9cc012c2cbac4833746a0182e06a8eec940d19 Mon Sep 17 00:00:00 2001 From: Josh Poimboeuf Date: Tue, 8 Apr 2025 00:02:15 -0700 Subject: [PATCH] objtool: Stop UNRET validation on UD2 In preparation for simplifying INSN_SYSCALL, make validate_unret() terminate control flow on UD2 just like validate_branch() already does. Signed-off-by: Josh Poimboeuf Signed-off-by: Ingo Molnar Cc: Linus Torvalds Link: https://lore.kernel.org/r/ce841269e7e28c8b7f32064464a9821034d724ff.1744095216.git.jpoimboe@kernel.org --- tools/objtool/check.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 2c703b960420..2dd89b0f4d5e 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -3902,6 +3902,9 @@ static int validate_unret(struct objtool_file *file, struct instruction *insn) break; } + if (insn->dead_end) + return 0; + if (!next) { WARN_INSN(insn, "teh end!"); return 1; -- 2.49.0