6.18-stable review patch. If anyone has any objections, please let me know.
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From: Dylan Hatch dylanbhatch@google.com
[ Upstream commit be8374a5ba7cbab6b97df94b4ffe0b92f5c8a6d2 ]
The objtool command line 'objtool --hacks=jump_label foo.o' on its own should be expected to rewrite jump labels to NOPs. This means the add_special_section_alts() code path needs to run when only this option is provided.
This is mainly relevant in certain debugging situations, but could potentially also fix kernel builds in which objtool is run with --hacks=jump_label but without --orc, --stackval, --uaccess, or --hacks=noinstr.
Fixes: de6fbcedf5ab ("objtool: Read special sections with alts only when specific options are selected") Signed-off-by: Dylan Hatch dylanbhatch@google.com Signed-off-by: Josh Poimboeuf jpoimboe@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- tools/objtool/check.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 9004fbc067693..6059a546fb759 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -2564,7 +2564,8 @@ static int decode_sections(struct objtool_file *file) * Must be before add_jump_destinations(), which depends on 'func' * being set for alternatives, to enable proper sibling call detection. */ - if (opts.stackval || opts.orc || opts.uaccess || opts.noinstr) { + if (opts.stackval || opts.orc || opts.uaccess || opts.noinstr || + opts.hack_jump_label) { ret = add_special_section_alts(file); if (ret) return ret;