scftorture: Count single_rpc offline failures in statistics outputgrafted

scf_torture_stats_print() aggregates each invoker thread's counters
into a local scf_statistics structure before printing, but the
n_single_rpc_ofl field is missing from the aggregation loop.  As a
result, the "single_rpc_ofl" value printed in the statistics line is
always zero, even when smp_call_function_single() invocations for the
RPC test have failed due to offline CPUs and been counted by the
invoker threads.

Add the missing accumulation so that the printed value reflects the
actual counts.

Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

1 files changed, 291 insertions, 0 deletions

diff --git a/security/apparmor/audit.c b/security/apparmor/audit.c
new file mode 100644
index 000000000..4a60b6fda
--- /dev/null
+++ b/security/apparmor/audit.c
@@ -0,0 +1,291 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * AppArmor security module
+ *
+ * This file contains AppArmor auditing functions
+ *
+ * Copyright (C) 1998-2008 Novell/SUSE
+ * Copyright 2009-2010 Canonical Ltd.
+ */
+
+#include <linux/audit.h>
+#include <linux/socket.h>
+
+#include "include/apparmor.h"
+#include "include/audit.h"
+#include "include/policy.h"
+#include "include/policy_ns.h"
+#include "include/secid.h"
+
+const char *const audit_mode_names[] = {
+	"normal",
+	"quiet_denied",
+	"quiet",
+	"noquiet",
+	"all"
+};
+
+static const char *const aa_audit_type[] = {
+	"AUDIT",
+	"ALLOWED",
+	"DENIED",
+	"HINT",
+	"STATUS",
+	"ERROR",
+	"KILLED",
+	"AUTO"
+};
+
+static const char *const aa_class_names[] = {
+	"none",
+	"unknown",
+	"file",
+	"cap",
+	"net",
+	"rlimits",
+	"domain",
+	"mount",
+	"unknown",
+	"ptrace",
+	"signal",
+	"xmatch",
+	"unknown",
+	"unknown",
+	"net",
+	"unknown",
+	"label",
+	"posix_mqueue",
+	"io_uring",
+	"module",
+	"lsm",
+	"namespace",
+	"io_uring",
+	"unknown",
+	"unknown",
+	"unknown",
+	"unknown",
+	"unknown",
+	"unknown",
+	"unknown",
+	"unknown",
+	"X",
+	"dbus",
+};
+
+
+/*
+ * Currently AppArmor auditing is fed straight into the audit framework.
+ *
+ * TODO:
+ * netlink interface for complain mode
+ * user auditing, - send user auditing to netlink interface
+ * system control of whether user audit messages go to system log
+ */
+
+/**
+ * audit_pre() - core AppArmor function.
+ * @ab: audit buffer to fill (NOT NULL)
+ * @va: audit structure containing data to audit (NOT NULL)
+ *
+ * Record common AppArmor audit data from @va
+ */
+static void audit_pre(struct audit_buffer *ab, void *va)
+{
+	struct apparmor_audit_data *ad = aad_of_va(va);
+
+	if (aa_g_audit_header) {
+		audit_log_format(ab, "apparmor=\"%s\"",
+				 aa_audit_type[ad->type]);
+	}
+
+	if (ad->op)
+		audit_log_format(ab, " operation=\"%s\"", ad->op);
+
+	if (ad->class)
+		audit_log_format(ab, " class=\"%s\"",
+				 ad->class <= AA_CLASS_LAST ?
+				 aa_class_names[ad->class] :
+				 "unknown");
+
+	if (ad->info) {
+		audit_log_format(ab, " info=\"%s\"", ad->info);
+		if (ad->error)
+			audit_log_format(ab, " error=%d", ad->error);
+	}
+
+	if (ad->subj_label) {
+		struct aa_label *label = ad->subj_label;
+
+		if (label_isprofile(label)) {
+			struct aa_profile *profile = labels_profile(label);
+
+			if (profile->ns != root_ns) {
+				audit_log_format(ab, " namespace=");
+				audit_log_untrustedstring(ab,
+						       profile->ns->base.hname);
+			}
+			audit_log_format(ab, " profile=");
+			audit_log_untrustedstring(ab, profile->base.hname);
+		} else {
+			audit_log_format(ab, " label=");
+			aa_label_xaudit(ab, root_ns, label, FLAG_VIEW_SUBNS,
+					GFP_ATOMIC);
+		}
+	}
+
+	if (ad->name) {
+		audit_log_format(ab, " name=");
+		audit_log_untrustedstring(ab, ad->name);
+	}
+}
+
+/**
+ * aa_audit_msg - Log a message to the audit subsystem
+ * @type: audit type for the message
+ * @ad: audit event structure (NOT NULL)
+ * @cb: optional callback fn for type specific fields (MAYBE NULL)
+ */
+void aa_audit_msg(int type, struct apparmor_audit_data *ad,
+		  void (*cb) (struct audit_buffer *, void *))
+{
+	ad->type = type;
+	common_lsm_audit(&ad->common, audit_pre, cb);
+}
+
+/**
+ * aa_audit - Log a profile based audit event to the audit subsystem
+ * @type: audit type for the message
+ * @profile: profile to check against (NOT NULL)
+ * @ad: audit event (NOT NULL)
+ * @cb: optional callback fn for type specific fields (MAYBE NULL)
+ *
+ * Handle default message switching based off of audit mode flags
+ *
+ * Returns: error on failure
+ */
+int aa_audit(int type, struct aa_profile *profile,
+	     struct apparmor_audit_data *ad,
+	     void (*cb) (struct audit_buffer *, void *))
+{
+	AA_BUG(!profile);
+
+	if (type == AUDIT_APPARMOR_AUTO) {
+		if (likely(!ad->error)) {
+			if (AUDIT_MODE(profile) != AUDIT_ALL)
+				return 0;
+			type = AUDIT_APPARMOR_AUDIT;
+		} else if (COMPLAIN_MODE(profile))
+			type = AUDIT_APPARMOR_ALLOWED;
+		else
+			type = AUDIT_APPARMOR_DENIED;
+	}
+	if (AUDIT_MODE(profile) == AUDIT_QUIET ||
+	    (type == AUDIT_APPARMOR_DENIED &&
+	     AUDIT_MODE(profile) == AUDIT_QUIET_DENIED))
+		return ad->error;
+
+	if (KILL_MODE(profile) && type == AUDIT_APPARMOR_DENIED)
+		type = AUDIT_APPARMOR_KILL;
+
+	ad->subj_label = &profile->label;
+
+	aa_audit_msg(type, ad, cb);
+
+	if (ad->type == AUDIT_APPARMOR_KILL)
+		(void)send_sig_info(profile->signal, NULL,
+			ad->common.type == LSM_AUDIT_DATA_TASK &&
+			ad->common.u.tsk ? ad->common.u.tsk : current);
+
+	if (ad->type == AUDIT_APPARMOR_ALLOWED)
+		return complain_error(ad->error);
+
+	return ad->error;
+}
+
+struct aa_audit_rule {
+	struct aa_label *label;
+};
+
+void aa_audit_rule_free(void *vrule)
+{
+	struct aa_audit_rule *rule = vrule;
+
+	if (rule) {
+		if (!IS_ERR(rule->label))
+			aa_put_label(rule->label);
+		kfree(rule);
+	}
+}
+
+int aa_audit_rule_init(u32 field, u32 op, char *rulestr, void **vrule, gfp_t gfp)
+{
+	struct aa_audit_rule *rule;
+
+	switch (field) {
+	case AUDIT_SUBJ_ROLE:
+		if (op != Audit_equal && op != Audit_not_equal)
+			return -EINVAL;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	rule = kzalloc_obj(struct aa_audit_rule, gfp);
+
+	if (!rule)
+		return -ENOMEM;
+
+	/* Currently rules are treated as coming from the root ns */
+	rule->label = aa_label_parse(&root_ns->unconfined->label, rulestr,
+				     gfp, true, false);
+	if (IS_ERR(rule->label)) {
+		int err = PTR_ERR(rule->label);
+		aa_audit_rule_free(rule);
+		return err;
+	}
+
+	*vrule = rule;
+	return 0;
+}
+
+int aa_audit_rule_known(struct audit_krule *rule)
+{
+	int i;
+
+	for (i = 0; i < rule->field_count; i++) {
+		struct audit_field *f = &rule->fields[i];
+
+		switch (f->type) {
+		case AUDIT_SUBJ_ROLE:
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
+int aa_audit_rule_match(struct lsm_prop *prop, u32 field, u32 op, void *vrule)
+{
+	struct aa_audit_rule *rule = vrule;
+	struct aa_label *label;
+	int found = 0;
+
+	label = prop->apparmor.label;
+
+	if (!label)
+		return -ENOENT;
+
+	if (aa_label_is_subset(label, rule->label))
+		found = 1;
+
+	switch (field) {
+	case AUDIT_SUBJ_ROLE:
+		switch (op) {
+		case Audit_equal:
+			return found;
+		case Audit_not_equal:
+			return !found;
+		}
+	}
+	return 0;
+}