| From 391e22f449f7779a5ef35486175b1ce79fdfa205 Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Tue, 8 Apr 2025 00:02:15 -0700 |
| Subject: objtool: Stop UNRET validation on UD2 |
| |
| From: Josh Poimboeuf <jpoimboe@kernel.org> |
| |
| [ Upstream commit 9f9cc012c2cbac4833746a0182e06a8eec940d19 ] |
| |
| 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 <jpoimboe@kernel.org> |
| Signed-off-by: Ingo Molnar <mingo@kernel.org> |
| Cc: Linus Torvalds <torvalds@linux-foundation.org> |
| Link: https://lore.kernel.org/r/ce841269e7e28c8b7f32064464a9821034d724ff.1744095216.git.jpoimboe@kernel.org |
| Signed-off-by: Sasha Levin <sashal@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 bcc9948645a00..20ccdd60353be 100644 |
| --- a/tools/objtool/check.c |
| +++ b/tools/objtool/check.c |
| @@ -3249,6 +3249,9 @@ static int validate_entry(struct objtool_file *file, struct instruction *insn) |
| break; |
| } |
| |
| + if (insn->dead_end) |
| + return 0; |
| + |
| if (!next) { |
| WARN_FUNC("teh end!", insn->sec, insn->offset); |
| return -1; |
| -- |
| 2.39.5 |
| |
