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.174409521... 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 9102ad5985cc0..78f38a74bd398 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -3935,6 +3935,9 @@ 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;