diff options
Diffstat (limited to 'tools/objtool/check.c')
| -rw-r--r-- | tools/objtool/check.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 6ea78612635b..bf75628c5389 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -3083,7 +3083,7 @@ static int handle_insn_ops(struct instruction *insn, if (update_cfi_state(insn, next_insn, &state->cfi, op)) return 1; - if (!insn->alt_group) + if (!opts.uaccess || !insn->alt_group) continue; if (op->dest.type == OP_DEST_PUSHF) { @@ -3368,6 +3368,9 @@ static int validate_branch(struct objtool_file *file, struct symbol *func, if (!strncmp(func->name, "__cfi_", 6)) return 0; + if (file->ignore_unreachables) + return 0; + WARN("%s() falls through to next function %s()", func->name, insn->func->name); return 1; @@ -3532,6 +3535,9 @@ static int validate_branch(struct objtool_file *file, struct symbol *func, return 0; case INSN_STAC: + if (!opts.uaccess) + break; + if (state.uaccess) { WARN_FUNC("recursive UACCESS enable", sec, insn->offset); return 1; @@ -3541,6 +3547,9 @@ static int validate_branch(struct objtool_file *file, struct symbol *func, break; case INSN_CLAC: + if (!opts.uaccess) + break; + if (!state.uaccess && func) { WARN_FUNC("redundant UACCESS disable", sec, insn->offset); return 1; @@ -3582,6 +3591,9 @@ static int validate_branch(struct objtool_file *file, struct symbol *func, if (!next_insn) { if (state.cfi.cfa.base == CFI_UNDEFINED) return 0; + if (file->ignore_unreachables) + return 0; + WARN("%s: unexpected end of section", sec->name); return 1; } @@ -3731,6 +3743,9 @@ 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; @@ -3947,7 +3962,8 @@ static int validate_symbol(struct objtool_file *file, struct section *sec, if (!insn || insn->ignore || insn->visited) return 0; - state->uaccess = sym->uaccess_safe; + if (opts.uaccess) + state->uaccess = sym->uaccess_safe; ret = validate_branch(file, insn->func, insn, *state); if (ret && opts.backtrace) |