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objtool: Fix error handling for STD/CLD warnings 

Actually return an error (and display a backtrace, if requested) for
directional bit warnings.

Fixes: 2f0f9e9ad7 ("objtool: Add Direction Flag validation")
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/dc70f2adbc72f09526f7cab5b6feb8bf7f6c5ad4.1611263461.git.jpoimboe@redhat.com
This commit is contained in:
Josh Poimboeuf 2021-01-21 15:29:17 -06:00
parent c9c324dc22
commit 6f567c9300
1 changed files with 6 additions and 2 deletions
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8
tools/objtool/check.c
View File

@ -2651,15 +2651,19 @@ static int validate_branch(struct objtool_file *file, struct symbol *func,
break;
case INSN_STD:
if (state.df)
if (state.df) {
WARN_FUNC("recursive STD", sec, insn->offset);
return 1;
}
state.df = true;
break;
case INSN_CLD:
if (!state.df && func)
if (!state.df && func) {
WARN_FUNC("redundant CLD", sec, insn->offset);
return 1;
}
state.df = false;
break;