Sometimes Clang arm64 code jumps to the end of the function for UB. No need to make that an error, arm64 doesn't reverse engineer the CFG anyway.
Signed-off-by: Josh Poimboeuf <[email protected]> --- tools/objtool/check.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/tools/objtool/check.c b/tools/objtool/check.c index f73cf1382e5c..23cde2de66b9 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -1630,10 +1630,12 @@ static int add_jump_destinations(struct objtool_file *file) /* * GCOV/KCOV dead code can jump to the end of * the function/section. + * + * Clang on arm64 also does this sometimes for + * undefined behavior. */ - if (file->ignore_unreachables && func && - dest_sec == insn->sec && - dest_off == func->offset + func->len) + if ((file->ignore_unreachables || (!opts.stackval && !opts.orc)) && + func && dest_sec == insn->sec && dest_off == func->offset + func->len) continue; ERROR_INSN(insn, "can't find jump dest instruction at %s", -- 2.53.0
