14 files changed, 143 insertions, 50 deletions

diff --git a/tools/bootconfig/include/linux/printk.h b/tools/bootconfig/include/linux/printk.h
index e978a63d3222..036e667596eb 100644
--- a/tools/bootconfig/include/linux/printk.h
+++ b/tools/bootconfig/include/linux/printk.h
@@ -4,10 +4,7 @@
 
 #include <stdio.h>
 
-/* controllable printf */
-extern int pr_output;
-#define printk(fmt, ...)	\
-	(pr_output ? printf(fmt, ##__VA_ARGS__) : 0)
+#define printk(fmt, ...) printf(fmt, ##__VA_ARGS__)
 
 #define pr_err printk
 #define pr_warn	printk
diff --git a/tools/bootconfig/main.c b/tools/bootconfig/main.c
index e18eeb070562..a9b97814d1a9 100644
--- a/tools/bootconfig/main.c
+++ b/tools/bootconfig/main.c
@@ -14,8 +14,6 @@
 #include <linux/kernel.h>
 #include <linux/bootconfig.h>
 
-int pr_output = 1;
-
 static int xbc_show_array(struct xbc_node *node)
 {
 	const char *val;
@@ -131,15 +129,26 @@ int load_xbc_from_initrd(int fd, char **buf)
 	struct stat stat;
 	int ret;
 	u32 size = 0, csum = 0, rcsum;
+	char magic[BOOTCONFIG_MAGIC_LEN];
 
 	ret = fstat(fd, &stat);
 	if (ret < 0)
 		return -errno;
 
-	if (stat.st_size < 8)
+	if (stat.st_size < 8 + BOOTCONFIG_MAGIC_LEN)
+		return 0;
+
+	if (lseek(fd, -BOOTCONFIG_MAGIC_LEN, SEEK_END) < 0) {
+		pr_err("Failed to lseek: %d\n", -errno);
+		return -errno;
+	}
+	if (read(fd, magic, BOOTCONFIG_MAGIC_LEN) < 0)
+		return -errno;
+	/* Check the bootconfig magic bytes */
+	if (memcmp(magic, BOOTCONFIG_MAGIC, BOOTCONFIG_MAGIC_LEN) != 0)
 		return 0;
 
-	if (lseek(fd, -8, SEEK_END) < 0) {
+	if (lseek(fd, -(8 + BOOTCONFIG_MAGIC_LEN), SEEK_END) < 0) {
 		pr_err("Failed to lseek: %d\n", -errno);
 		return -errno;
 	}
@@ -150,11 +159,14 @@ int load_xbc_from_initrd(int fd, char **buf)
 	if (read(fd, &csum, sizeof(u32)) < 0)
 		return -errno;
 
-	/* Wrong size, maybe no boot config here */
-	if (stat.st_size < size + 8)
-		return 0;
+	/* Wrong size error  */
+	if (stat.st_size < size + 8 + BOOTCONFIG_MAGIC_LEN) {
+		pr_err("bootconfig size is too big\n");
+		return -E2BIG;
+	}
 
-	if (lseek(fd, stat.st_size - 8 - size, SEEK_SET) < 0) {
+	if (lseek(fd, stat.st_size - (size + 8 + BOOTCONFIG_MAGIC_LEN),
+		  SEEK_SET) < 0) {
 		pr_err("Failed to lseek: %d\n", -errno);
 		return -errno;
 	}
@@ -163,17 +175,17 @@ int load_xbc_from_initrd(int fd, char **buf)
 	if (ret < 0)
 		return ret;
 
-	/* Wrong Checksum, maybe no boot config here */
+	/* Wrong Checksum */
 	rcsum = checksum((unsigned char *)*buf, size);
 	if (csum != rcsum) {
 		pr_err("checksum error: %d != %d\n", csum, rcsum);
-		return 0;
+		return -EINVAL;
 	}
 
 	ret = xbc_init(*buf);
-	/* Wrong data, maybe no boot config here */
+	/* Wrong data */
 	if (ret < 0)
-		return 0;
+		return ret;
 
 	return size;
 }
@@ -213,20 +225,15 @@ int delete_xbc(const char *path)
 		return -errno;
 	}
 
-	/*
-	 * Suppress error messages in xbc_init() because it can be just a
-	 * data which concidentally matches the size and checksum footer.
-	 */
-	pr_output = 0;
 	size = load_xbc_from_initrd(fd, &buf);
-	pr_output = 1;
 	if (size < 0) {
 		ret = size;
 		pr_err("Failed to load a boot config from initrd: %d\n", ret);
 	} else if (size > 0) {
 		ret = fstat(fd, &stat);
 		if (!ret)
-			ret = ftruncate(fd, stat.st_size - size - 8);
+			ret = ftruncate(fd, stat.st_size
+					- size - 8 - BOOTCONFIG_MAGIC_LEN);
 		if (ret)
 			ret = -errno;
 	} /* Ignore if there is no boot config in initrd */
@@ -295,6 +302,12 @@ int apply_xbc(const char *path, const char *xbc_path)
 		pr_err("Failed to apply a boot config: %d\n", ret);
 		return ret;
 	}
+	/* Write a magic word of the bootconfig */
+	ret = write(fd, BOOTCONFIG_MAGIC, BOOTCONFIG_MAGIC_LEN);
+	if (ret < 0) {
+		pr_err("Failed to apply a boot config magic: %d\n", ret);
+		return ret;
+	}
 	close(fd);
 	free(data);
 
diff --git a/tools/bootconfig/samples/bad-mixed-kv1.bconf b/tools/bootconfig/samples/bad-mixed-kv1.bconf
new file mode 100644
index 000000000000..1761547dd05c
--- /dev/null
+++ b/tools/bootconfig/samples/bad-mixed-kv1.bconf
@@ -0,0 +1,3 @@
+# value -> subkey pattern
+key = value
+key.subkey = another-value
diff --git a/tools/bootconfig/samples/bad-mixed-kv2.bconf b/tools/bootconfig/samples/bad-mixed-kv2.bconf
new file mode 100644
index 000000000000..6b32e0c3878c
--- /dev/null
+++ b/tools/bootconfig/samples/bad-mixed-kv2.bconf
@@ -0,0 +1,3 @@
+# subkey -> value pattern
+key.subkey = value
+key = another-value
diff --git a/tools/bootconfig/samples/bad-samekey.bconf b/tools/bootconfig/samples/bad-samekey.bconf
new file mode 100644
index 000000000000..e8d983a4563c
--- /dev/null
+++ b/tools/bootconfig/samples/bad-samekey.bconf
@@ -0,0 +1,6 @@
+# Same key value is not allowed
+key {
+	foo = value
+	bar = value2
+}
+key.foo = value
diff --git a/tools/bootconfig/test-bootconfig.sh b/tools/bootconfig/test-bootconfig.sh
index 1de06de328e2..1411f4c3454f 100755
--- a/tools/bootconfig/test-bootconfig.sh
+++ b/tools/bootconfig/test-bootconfig.sh
@@ -9,7 +9,7 @@ TEMPCONF=`mktemp temp-XXXX.bconf`
 NG=0
 
 cleanup() {
-  rm -f $INITRD $TEMPCONF
+  rm -f $INITRD $TEMPCONF $OUTFILE
   exit $NG
 }
 
@@ -49,7 +49,7 @@ xpass $BOOTCONF -a $TEMPCONF $INITRD
 new_size=$(stat -c %s $INITRD)
 
 echo "File size check"
-xpass test $new_size -eq $(expr $bconf_size + $initrd_size + 9)
+xpass test $new_size -eq $(expr $bconf_size + $initrd_size + 9 + 12)
 
 echo "Apply command repeat test"
 xpass $BOOTCONF -a $TEMPCONF $INITRD
@@ -71,7 +71,6 @@ printf " \0\0\0 \0\0\0" >> $INITRD
 $BOOTCONF -a $TEMPCONF $INITRD > $OUTFILE 2>&1
 xfail grep -i "failed" $OUTFILE
 xfail grep -i "error" $OUTFILE
-rm $OUTFILE
 
 echo "Max node number check"
 
@@ -96,6 +95,19 @@ truncate -s 32764 $TEMPCONF
 echo "\"" >> $TEMPCONF	# add 2 bytes + terminal ('\"\n\0')
 xpass $BOOTCONF -a $TEMPCONF $INITRD
 
+echo "Adding same-key values"
+cat > $TEMPCONF << EOF
+key = bar, baz
+key += qux
+EOF
+echo > $INITRD
+
+xpass $BOOTCONF -a $TEMPCONF $INITRD
+$BOOTCONF $INITRD > $OUTFILE
+xpass grep -q "bar" $OUTFILE
+xpass grep -q "baz" $OUTFILE
+xpass grep -q "qux" $OUTFILE
+
 echo "=== expected failure cases ==="
 for i in samples/bad-* ; do
   xfail $BOOTCONF -a $i $INITRD
diff --git a/tools/testing/kunit/kunit.py b/tools/testing/kunit/kunit.py
index e59eb9e7f923..180ad1e1b04f 100755
--- a/tools/testing/kunit/kunit.py
+++ b/tools/testing/kunit/kunit.py
@@ -24,6 +24,8 @@ KunitResult = namedtuple('KunitResult', ['status','result'])
 
 KunitRequest = namedtuple('KunitRequest', ['raw_output','timeout', 'jobs', 'build_dir', 'defconfig'])
 
+KernelDirectoryPath = sys.argv[0].split('tools/testing/kunit/')[0]
+
 class KunitStatus(Enum):
 	SUCCESS = auto()
 	CONFIG_FAILURE = auto()
@@ -35,6 +37,13 @@ def create_default_kunitconfig():
 		shutil.copyfile('arch/um/configs/kunit_defconfig',
 				kunit_kernel.kunitconfig_path)
 
+def get_kernel_root_path():
+	parts = sys.argv[0] if not __file__ else __file__
+	parts = os.path.realpath(parts).split('tools/testing/kunit')
+	if len(parts) != 2:
+		sys.exit(1)
+	return parts[0]
+
 def run_tests(linux: kunit_kernel.LinuxSourceTree,
 	      request: KunitRequest) -> KunitResult:
 	config_start = time.time()
@@ -114,6 +123,9 @@ def main(argv, linux=None):
 	cli_args = parser.parse_args(argv)
 
 	if cli_args.subcommand == 'run':
+		if get_kernel_root_path():
+			os.chdir(get_kernel_root_path())
+
 		if cli_args.build_dir:
 			if not os.path.exists(cli_args.build_dir):
 				os.mkdir(cli_args.build_dir)
diff --git a/tools/testing/kunit/kunit_kernel.py b/tools/testing/kunit/kunit_kernel.py
index cc5d844ecca1..d99ae75ef72f 100644
--- a/tools/testing/kunit/kunit_kernel.py
+++ b/tools/testing/kunit/kunit_kernel.py
@@ -93,6 +93,20 @@ class LinuxSourceTree(object):
 			return False
 		return True
 
+	def validate_config(self, build_dir):
+		kconfig_path = get_kconfig_path(build_dir)
+		validated_kconfig = kunit_config.Kconfig()
+		validated_kconfig.read_from_file(kconfig_path)
+		if not self._kconfig.is_subset_of(validated_kconfig):
+			invalid = self._kconfig.entries() - validated_kconfig.entries()
+			message = 'Provided Kconfig is not contained in validated .config. Following fields found in kunitconfig, ' \
+					  'but not in .config: %s' % (
+					', '.join([str(e) for e in invalid])
+			)
+			logging.error(message)
+			return False
+		return True
+
 	def build_config(self, build_dir):
 		kconfig_path = get_kconfig_path(build_dir)
 		if build_dir and not os.path.exists(build_dir):
@@ -103,12 +117,7 @@ class LinuxSourceTree(object):
 		except ConfigError as e:
 			logging.error(e)
 			return False
-		validated_kconfig = kunit_config.Kconfig()
-		validated_kconfig.read_from_file(kconfig_path)
-		if not self._kconfig.is_subset_of(validated_kconfig):
-			logging.error('Provided Kconfig is not contained in validated .config!')
-			return False
-		return True
+		return self.validate_config(build_dir)
 
 	def build_reconfig(self, build_dir):
 		"""Creates a new .config if it is not a subset of the .kunitconfig."""
@@ -133,12 +142,7 @@ class LinuxSourceTree(object):
 		except (ConfigError, BuildError) as e:
 			logging.error(e)
 			return False
-		used_kconfig = kunit_config.Kconfig()
-		used_kconfig.read_from_file(get_kconfig_path(build_dir))
-		if not self._kconfig.is_subset_of(used_kconfig):
-			logging.error('Provided Kconfig is not contained in final config!')
-			return False
-		return True
+		return self.validate_config(build_dir)
 
 	def run_kernel(self, args=[], timeout=None, build_dir=''):
 		args.extend(['mem=256M'])
diff --git a/tools/testing/selftests/ftrace/Makefile b/tools/testing/selftests/ftrace/Makefile
index cd1f5b3a7774..d6e106fbce11 100644
--- a/tools/testing/selftests/ftrace/Makefile
+++ b/tools/testing/selftests/ftrace/Makefile
@@ -2,7 +2,7 @@
 all:
 
 TEST_PROGS := ftracetest
-TEST_FILES := test.d
+TEST_FILES := test.d settings
 EXTRA_CLEAN := $(OUTPUT)/logs/*
 
 include ../lib.mk
diff --git a/tools/testing/selftests/livepatch/Makefile b/tools/testing/selftests/livepatch/Makefile
index 3876d8d62494..1acc9e1fa3fb 100644
--- a/tools/testing/selftests/livepatch/Makefile
+++ b/tools/testing/selftests/livepatch/Makefile
@@ -8,4 +8,6 @@ TEST_PROGS := \
 	test-state.sh \
 	test-ftrace.sh
 
+TEST_FILES := settings
+
 include ../lib.mk
diff --git a/tools/testing/selftests/net/mptcp/Makefile b/tools/testing/selftests/net/mptcp/Makefile
index 93de52016dde..ba450e62dc5b 100644
--- a/tools/testing/selftests/net/mptcp/Makefile
+++ b/tools/testing/selftests/net/mptcp/Makefile
@@ -8,6 +8,8 @@ TEST_PROGS := mptcp_connect.sh
 
 TEST_GEN_FILES = mptcp_connect
 
+TEST_FILES := settings
+
 EXTRA_CLEAN := *.pcap
 
 include ../../lib.mk
diff --git a/tools/testing/selftests/netfilter/nft_concat_range.sh b/tools/testing/selftests/netfilter/nft_concat_range.sh
index aca21dde102a..5a4938d6dcf2 100755
--- a/tools/testing/selftests/netfilter/nft_concat_range.sh
+++ b/tools/testing/selftests/netfilter/nft_concat_range.sh
@@ -13,11 +13,12 @@
 KSELFTEST_SKIP=4
 
 # Available test groups:
+# - reported_issues: check for issues that were reported in the past
 # - correctness: check that packets match given entries, and only those
 # - concurrency: attempt races between insertion, deletion and lookup
 # - timeout: check that packets match entries until they expire
 # - performance: estimate matching rate, compare with rbtree and hash baselines
-TESTS="correctness concurrency timeout"
+TESTS="reported_issues correctness concurrency timeout"
 [ "${quicktest}" != "1" ] && TESTS="${TESTS} performance"
 
 # Set types, defined by TYPE_ variables below
@@ -25,6 +26,9 @@ TYPES="net_port port_net net6_port port_proto net6_port_mac net6_port_mac_proto
        net_port_net net_mac net_mac_icmp net6_mac_icmp net6_port_net6_port
        net_port_mac_proto_net"
 
+# Reported bugs, also described by TYPE_ variables below
+BUGS="flush_remove_add"
+
 # List of possible paths to pktgen script from kernel tree for performance tests
 PKTGEN_SCRIPT_PATHS="
 	../../../samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh
@@ -327,6 +331,12 @@ flood_spec	ip daddr . tcp dport . meta l4proto . ip saddr
 perf_duration	0
 "
 
+# Definition of tests for bugs reported in the past:
+# display	display text for test report
+TYPE_flush_remove_add="
+display		Add two elements, flush, re-add
+"
+
 # Set template for all tests, types and rules are filled in depending on test
 set_template='
 flush ruleset
@@ -440,6 +450,8 @@ setup_set() {
 
 # Check that at least one of the needed tools is available
 check_tools() {
+	[ -z "${tools}" ] && return 0
+
 	__tools=
 	for tool in ${tools}; do
 		if [ "${tool}" = "nc" ] && [ "${proto}" = "udp6" ] && \
@@ -1025,7 +1037,7 @@ format_noconcat() {
 add() {
 	if ! nft add element inet filter test "${1}"; then
 		err "Failed to add ${1} given ruleset:"
-		err "$(nft list ruleset -a)"
+		err "$(nft -a list ruleset)"
 		return 1
 	fi
 }
@@ -1045,7 +1057,7 @@ add_perf() {
 add_perf_norange() {
 	if ! nft add element netdev perf norange "${1}"; then
 		err "Failed to add ${1} given ruleset:"
-		err "$(nft list ruleset -a)"
+		err "$(nft -a list ruleset)"
 		return 1
 	fi
 }
@@ -1054,7 +1066,7 @@ add_perf_norange() {
 add_perf_noconcat() {
 	if ! nft add element netdev perf noconcat "${1}"; then
 		err "Failed to add ${1} given ruleset:"
-		err "$(nft list ruleset -a)"
+		err "$(nft -a list ruleset)"
 		return 1
 	fi
 }
@@ -1063,7 +1075,7 @@ add_perf_noconcat() {
 del() {
 	if ! nft delete element inet filter test "${1}"; then
 		err "Failed to delete ${1} given ruleset:"
-		err "$(nft list ruleset -a)"
+		err "$(nft -a list ruleset)"
 		return 1
 	fi
 }
@@ -1134,7 +1146,7 @@ send_match() {
 		err "  $(for f in ${src}; do
 			 eval format_\$f "${2}"; printf ' '; done)"
 		err "should have matched ruleset:"
-		err "$(nft list ruleset -a)"
+		err "$(nft -a list ruleset)"
 		return 1
 	fi
 	nft reset counter inet filter test >/dev/null
@@ -1160,7 +1172,7 @@ send_nomatch() {
 		err "  $(for f in ${src}; do
 			 eval format_\$f "${2}"; printf ' '; done)"
 		err "should not have matched ruleset:"
-		err "$(nft list ruleset -a)"
+		err "$(nft -a list ruleset)"
 		return 1
 	fi
 }
@@ -1430,6 +1442,23 @@ test_performance() {
 	kill "${perf_pid}"
 }
 
+test_bug_flush_remove_add() {
+	set_cmd='{ set s { type ipv4_addr . inet_service; flags interval; }; }'
+	elem1='{ 10.0.0.1 . 22-25, 10.0.0.1 . 10-20 }'
+	elem2='{ 10.0.0.1 . 10-20, 10.0.0.1 . 22-25 }'
+	for i in `seq 1 100`; do
+		nft add table t ${set_cmd}	|| return ${KSELFTEST_SKIP}
+		nft add element t s ${elem1}	2>/dev/null || return 1
+		nft flush set t s		2>/dev/null || return 1
+		nft add element t s ${elem2}	2>/dev/null || return 1
+	done
+	nft flush ruleset
+}
+
+test_reported_issues() {
+	eval test_bug_"${subtest}"
+}
+
 # Run everything in a separate network namespace
 [ "${1}" != "run" ] && { unshare -n "${0}" run; exit $?; }
 tmp="$(mktemp)"
@@ -1438,9 +1467,15 @@ trap cleanup EXIT
 # Entry point for test runs
 passed=0
 for name in ${TESTS}; do
-	printf "TEST: %s\n" "${name}"
-	for type in ${TYPES}; do
-		eval desc=\$TYPE_"${type}"
+	printf "TEST: %s\n" "$(echo ${name} | tr '_' ' ')"
+	if [ "${name}" = "reported_issues" ]; then
+		SUBTESTS="${BUGS}"
+	else
+		SUBTESTS="${TYPES}"
+	fi
+
+	for subtest in ${SUBTESTS}; do
+		eval desc=\$TYPE_"${subtest}"
 		IFS='
 '
 		for __line in ${desc}; do
diff --git a/tools/testing/selftests/rseq/Makefile b/tools/testing/selftests/rseq/Makefile
index d6469535630a..2af9d39a9716 100644
--- a/tools/testing/selftests/rseq/Makefile
+++ b/tools/testing/selftests/rseq/Makefile
@@ -4,7 +4,7 @@ ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),)
 CLANG_FLAGS += -no-integrated-as
 endif
 
-CFLAGS += -O2 -Wall -g -I./ -I../../../../usr/include/ -L./ -Wl,-rpath=./ \
+CFLAGS += -O2 -Wall -g -I./ -I../../../../usr/include/ -L$(OUTPUT) -Wl,-rpath=./ \
 	  $(CLANG_FLAGS)
 LDLIBS += -lpthread
 
@@ -19,6 +19,8 @@ TEST_GEN_PROGS_EXTENDED = librseq.so
 
 TEST_PROGS = run_param_test.sh
 
+TEST_FILES := settings
+
 include ../lib.mk
 
 $(OUTPUT)/librseq.so: rseq.c rseq.h rseq-*.h
diff --git a/tools/testing/selftests/rtc/Makefile b/tools/testing/selftests/rtc/Makefile
index 2d93d65723c9..55198ecc04db 100644
--- a/tools/testing/selftests/rtc/Makefile
+++ b/tools/testing/selftests/rtc/Makefile
@@ -6,4 +6,6 @@ TEST_GEN_PROGS = rtctest
 
 TEST_GEN_PROGS_EXTENDED = setdate
 
+TEST_FILES := settings
+
 include ../lib.mk