From e616d72f8b12df275e5afd05b0f5ed251f6d56a1 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Mon, 1 Jul 2024 19:14:06 +0200
Subject: Merging upstream version 6.9.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tools/testing/cxl/test/mem.c                       |   1 +
 tools/testing/selftests/alsa/Makefile              |   2 +-
 tools/testing/selftests/arm64/tags/tags_test.c     |   4 +
 tools/testing/selftests/bpf/cgroup_helpers.c       |   3 +
 tools/testing/selftests/bpf/network_helpers.c      |   2 +
 .../selftests/bpf/prog_tests/btf_map_in_map.c      |  26 +--
 .../selftests/bpf/prog_tests/cgroup1_hierarchy.c   |   7 +-
 .../selftests/bpf/prog_tests/uprobe_multi_test.c   |   2 +-
 .../selftests/bpf/prog_tests/xdp_do_redirect.c     |   4 +-
 .../bpf/progs/bench_local_storage_create.c         |   5 +-
 tools/testing/selftests/bpf/progs/local_storage.c  |  20 ++-
 tools/testing/selftests/bpf/progs/lsm_cgroup.c     |   8 +-
 .../selftests/bpf/progs/verifier_global_subprogs.c |   7 +
 tools/testing/selftests/bpf/test_sockmap.c         |   2 +-
 tools/testing/selftests/bpf/test_tc_tunnel.sh      |  13 +-
 tools/testing/selftests/cgroup/cgroup_util.c       |   8 +-
 tools/testing/selftests/cgroup/cgroup_util.h       |   2 +-
 tools/testing/selftests/cgroup/test_core.c         |   7 +-
 tools/testing/selftests/cgroup/test_cpu.c          |   2 +-
 tools/testing/selftests/cgroup/test_cpuset.c       |   2 +-
 tools/testing/selftests/cgroup/test_freezer.c      |   2 +-
 .../testing/selftests/cgroup/test_hugetlb_memcg.c  |   2 +-
 tools/testing/selftests/cgroup/test_kill.c         |   2 +-
 tools/testing/selftests/cgroup/test_kmem.c         |   2 +-
 tools/testing/selftests/cgroup/test_memcontrol.c   |   2 +-
 tools/testing/selftests/cgroup/test_zswap.c        |   2 +-
 tools/testing/selftests/damon/_damon_sysfs.py      |   2 +
 .../selftests/drivers/net/mlxsw/mlxsw_lib.sh       |   2 +-
 .../drivers/net/mlxsw/spectrum-2/resource_scale.sh |   1 -
 .../drivers/net/mlxsw/spectrum/resource_scale.sh   |   1 -
 .../selftests/filesystems/binderfs/Makefile        |   2 -
 .../ftrace/test.d/dynevent/add_remove_btfarg.tc    |   2 +-
 .../ftrace/test.d/dynevent/fprobe_entry_arg.tc     |   2 +-
 .../ftrace/test.d/dynevent/test_duplicates.tc      |   2 +-
 .../ftrace/test.d/filter/event-filter-function.tc  |  20 ++-
 .../ftrace/test.d/kprobe/kprobe_eventname.tc       |   3 +-
 .../ftrace/test.d/kprobe/kretprobe_entry_arg.tc    |   2 +-
 .../selftests/futex/functional/futex_requeue_pi.c  |   2 +-
 tools/testing/selftests/kcmp/kcmp_test.c           |   2 +-
 tools/testing/selftests/kselftest/ktap_helpers.sh  |   4 +-
 tools/testing/selftests/kselftest_harness.h        |  11 +-
 tools/testing/selftests/lib.mk                     |  12 +-
 tools/testing/selftests/mm/compaction_test.c       |  91 ++++++----
 tools/testing/selftests/mm/cow.c                   |   2 +-
 tools/testing/selftests/mm/gup_longterm.c          |   2 +-
 tools/testing/selftests/mm/gup_test.c              |   5 +-
 tools/testing/selftests/mm/ksm_functional_tests.c  |   2 +-
 tools/testing/selftests/mm/madv_populate.c         |   2 +-
 tools/testing/selftests/mm/mdwe_test.c             |   1 -
 tools/testing/selftests/mm/mkdirty.c               |   2 +-
 tools/testing/selftests/mm/pagemap_ioctl.c         |   4 +-
 tools/testing/selftests/mm/soft-dirty.c            |   2 +-
 tools/testing/selftests/mm/uffd-common.h           |   1 +
 tools/testing/selftests/net/amt.sh                 |  20 ++-
 .../selftests/net/arp_ndisc_untracked_subnets.sh   |  53 ++----
 tools/testing/selftests/net/cmsg_sender.c          |  20 ++-
 tools/testing/selftests/net/config                 |   1 +
 .../selftests/net/forwarding/bridge_igmp.sh        |   6 +-
 .../testing/selftests/net/forwarding/bridge_mld.sh |   6 +-
 .../selftests/net/forwarding/ethtool_rmon.sh       |   4 +-
 tools/testing/selftests/net/forwarding/lib.sh      | 186 ++++++++++-----------
 .../net/forwarding/router_mpath_nh_lib.sh          |   2 +-
 tools/testing/selftests/net/lib.sh                 | 135 +++++++++++++--
 tools/testing/selftests/net/mptcp/mptcp_join.sh    |  21 ++-
 tools/testing/selftests/net/mptcp/simult_flows.sh  |  10 +-
 tools/testing/selftests/net/mptcp/userspace_pm.sh  |  46 +++--
 .../selftests/net/openvswitch/openvswitch.sh       |   2 +-
 .../power_supply/test_power_supply_properties.sh   |   2 +-
 tools/testing/selftests/powerpc/dexcr/Makefile     |   2 +-
 tools/testing/selftests/resctrl/Makefile           |   4 +-
 tools/testing/selftests/riscv/hwprobe/.gitignore   |   2 +
 .../tc-testing/tc-tests/qdiscs/taprio.json         |  44 +++++
 72 files changed, 563 insertions(+), 326 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c
index 35ee41e435..0d0ca63de8 100644
--- a/tools/testing/cxl/test/mem.c
+++ b/tools/testing/cxl/test/mem.c
@@ -3,6 +3,7 @@
 
 #include <linux/platform_device.h>
 #include <linux/mod_devicetable.h>
+#include <linux/vmalloc.h>
 #include <linux/module.h>
 #include <linux/delay.h>
 #include <linux/sizes.h>
diff --git a/tools/testing/selftests/alsa/Makefile b/tools/testing/selftests/alsa/Makefile
index 5af9ba8a46..c1ce39874e 100644
--- a/tools/testing/selftests/alsa/Makefile
+++ b/tools/testing/selftests/alsa/Makefile
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 #
 
-CFLAGS += $(shell pkg-config --cflags alsa)
+CFLAGS += $(shell pkg-config --cflags alsa) $(KHDR_INCLUDES)
 LDLIBS += $(shell pkg-config --libs alsa)
 ifeq ($(LDLIBS),)
 LDLIBS += -lasound
diff --git a/tools/testing/selftests/arm64/tags/tags_test.c b/tools/testing/selftests/arm64/tags/tags_test.c
index 5701163460..955f87c117 100644
--- a/tools/testing/selftests/arm64/tags/tags_test.c
+++ b/tools/testing/selftests/arm64/tags/tags_test.c
@@ -6,6 +6,7 @@
 #include <stdint.h>
 #include <sys/prctl.h>
 #include <sys/utsname.h>
+#include "../../kselftest.h"
 
 #define SHIFT_TAG(tag)		((uint64_t)(tag) << 56)
 #define SET_TAG(ptr, tag)	(((uint64_t)(ptr) & ~SHIFT_TAG(0xff)) | \
@@ -21,6 +22,9 @@ int main(void)
 	if (prctl(PR_SET_TAGGED_ADDR_CTRL, PR_TAGGED_ADDR_ENABLE, 0, 0, 0) == 0)
 		tbi_enabled = 1;
 	ptr = (struct utsname *)malloc(sizeof(*ptr));
+	if (!ptr)
+		ksft_exit_fail_msg("Failed to allocate utsname buffer\n");
+
 	if (tbi_enabled)
 		tag = 0x42;
 	ptr = (struct utsname *)SET_TAG(ptr, tag);
diff --git a/tools/testing/selftests/bpf/cgroup_helpers.c b/tools/testing/selftests/bpf/cgroup_helpers.c
index 19be9c63d5..e812876d79 100644
--- a/tools/testing/selftests/bpf/cgroup_helpers.c
+++ b/tools/testing/selftests/bpf/cgroup_helpers.c
@@ -508,6 +508,9 @@ int cgroup_setup_and_join(const char *path) {
 /**
  * setup_classid_environment() - Setup the cgroupv1 net_cls environment
  *
+ * This function should only be called in a custom mount namespace, e.g.
+ * created by running setup_cgroup_environment.
+ *
  * After calling this function, cleanup_classid_environment should be called
  * once testing is complete.
  *
diff --git a/tools/testing/selftests/bpf/network_helpers.c b/tools/testing/selftests/bpf/network_helpers.c
index 6db27a9088..be96bf0223 100644
--- a/tools/testing/selftests/bpf/network_helpers.c
+++ b/tools/testing/selftests/bpf/network_helpers.c
@@ -461,6 +461,8 @@ struct nstoken *open_netns(const char *name)
 
 	return token;
 fail:
+	if (token->orig_netns_fd != -1)
+		close(token->orig_netns_fd);
 	free(token);
 	return NULL;
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/btf_map_in_map.c b/tools/testing/selftests/bpf/prog_tests/btf_map_in_map.c
index a8b53b8736..f66ceccd70 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf_map_in_map.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf_map_in_map.c
@@ -25,7 +25,7 @@ static void test_lookup_update(void)
 	int map1_fd, map2_fd, map3_fd, map4_fd, map5_fd, map1_id, map2_id;
 	int outer_arr_fd, outer_hash_fd, outer_arr_dyn_fd;
 	struct test_btf_map_in_map *skel;
-	int err, key = 0, val, i, fd;
+	int err, key = 0, val, i;
 
 	skel = test_btf_map_in_map__open_and_load();
 	if (CHECK(!skel, "skel_open", "failed to open&load skeleton\n"))
@@ -102,30 +102,6 @@ static void test_lookup_update(void)
 	CHECK(map1_id == 0, "map1_id", "failed to get ID 1\n");
 	CHECK(map2_id == 0, "map2_id", "failed to get ID 2\n");
 
-	test_btf_map_in_map__destroy(skel);
-	skel = NULL;
-
-	/* we need to either wait for or force synchronize_rcu(), before
-	 * checking for "still exists" condition, otherwise map could still be
-	 * resolvable by ID, causing false positives.
-	 *
-	 * Older kernels (5.8 and earlier) freed map only after two
-	 * synchronize_rcu()s, so trigger two, to be entirely sure.
-	 */
-	CHECK(kern_sync_rcu(), "sync_rcu", "failed\n");
-	CHECK(kern_sync_rcu(), "sync_rcu", "failed\n");
-
-	fd = bpf_map_get_fd_by_id(map1_id);
-	if (CHECK(fd >= 0, "map1_leak", "inner_map1 leaked!\n")) {
-		close(fd);
-		goto cleanup;
-	}
-	fd = bpf_map_get_fd_by_id(map2_id);
-	if (CHECK(fd >= 0, "map2_leak", "inner_map2 leaked!\n")) {
-		close(fd);
-		goto cleanup;
-	}
-
 cleanup:
 	test_btf_map_in_map__destroy(skel);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/cgroup1_hierarchy.c b/tools/testing/selftests/bpf/prog_tests/cgroup1_hierarchy.c
index 74d6d7546f..25332e5967 100644
--- a/tools/testing/selftests/bpf/prog_tests/cgroup1_hierarchy.c
+++ b/tools/testing/selftests/bpf/prog_tests/cgroup1_hierarchy.c
@@ -87,9 +87,12 @@ void test_cgroup1_hierarchy(void)
 		goto destroy;
 
 	/* Setup cgroup1 hierarchy */
+	err = setup_cgroup_environment();
+	if (!ASSERT_OK(err, "setup_cgroup_environment"))
+		goto destroy;
 	err = setup_classid_environment();
 	if (!ASSERT_OK(err, "setup_classid_environment"))
-		goto destroy;
+		goto cleanup_cgroup;
 
 	err = join_classid();
 	if (!ASSERT_OK(err, "join_cgroup1"))
@@ -153,6 +156,8 @@ void test_cgroup1_hierarchy(void)
 
 cleanup:
 	cleanup_classid_environment();
+cleanup_cgroup:
+	cleanup_cgroup_environment();
 destroy:
 	test_cgroup1_hierarchy__destroy(skel);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c
index 8269cdee33..38fda42fd7 100644
--- a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c
+++ b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c
@@ -397,7 +397,7 @@ static void test_attach_api_fails(void)
 	link_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts);
 	if (!ASSERT_ERR(link_fd, "link_fd"))
 		goto cleanup;
-	ASSERT_EQ(link_fd, -ESRCH, "pid_is_wrong");
+	ASSERT_EQ(link_fd, -EINVAL, "pid_is_wrong");
 
 cleanup:
 	if (link_fd >= 0)
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c b/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c
index 498d3bdaa4..bad0ea167b 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c
@@ -107,8 +107,8 @@ void test_xdp_do_redirect(void)
 			    .attach_point = BPF_TC_INGRESS);
 
 	memcpy(&data[sizeof(__u64)], &pkt_udp, sizeof(pkt_udp));
-	*((__u32 *)data) = 0x42; /* metadata test value */
-	*((__u32 *)data + 4) = 0;
+	((__u32 *)data)[0] = 0x42; /* metadata test value */
+	((__u32 *)data)[1] = 0;
 
 	skel = test_xdp_do_redirect__open();
 	if (!ASSERT_OK_PTR(skel, "skel"))
diff --git a/tools/testing/selftests/bpf/progs/bench_local_storage_create.c b/tools/testing/selftests/bpf/progs/bench_local_storage_create.c
index e4bfbba6c1..c8ec0d0368 100644
--- a/tools/testing/selftests/bpf/progs/bench_local_storage_create.c
+++ b/tools/testing/selftests/bpf/progs/bench_local_storage_create.c
@@ -61,14 +61,15 @@ SEC("lsm.s/socket_post_create")
 int BPF_PROG(socket_post_create, struct socket *sock, int family, int type,
 	     int protocol, int kern)
 {
+	struct sock *sk = sock->sk;
 	struct storage *stg;
 	__u32 pid;
 
 	pid = bpf_get_current_pid_tgid() >> 32;
-	if (pid != bench_pid)
+	if (pid != bench_pid || !sk)
 		return 0;
 
-	stg = bpf_sk_storage_get(&sk_storage_map, sock->sk, NULL,
+	stg = bpf_sk_storage_get(&sk_storage_map, sk, NULL,
 				 BPF_LOCAL_STORAGE_GET_F_CREATE);
 
 	if (stg)
diff --git a/tools/testing/selftests/bpf/progs/local_storage.c b/tools/testing/selftests/bpf/progs/local_storage.c
index e5e3a8b8dd..637e75df2e 100644
--- a/tools/testing/selftests/bpf/progs/local_storage.c
+++ b/tools/testing/selftests/bpf/progs/local_storage.c
@@ -140,11 +140,12 @@ int BPF_PROG(socket_bind, struct socket *sock, struct sockaddr *address,
 {
 	__u32 pid = bpf_get_current_pid_tgid() >> 32;
 	struct local_storage *storage;
+	struct sock *sk = sock->sk;
 
-	if (pid != monitored_pid)
+	if (pid != monitored_pid || !sk)
 		return 0;
 
-	storage = bpf_sk_storage_get(&sk_storage_map, sock->sk, 0, 0);
+	storage = bpf_sk_storage_get(&sk_storage_map, sk, 0, 0);
 	if (!storage)
 		return 0;
 
@@ -155,24 +156,24 @@ int BPF_PROG(socket_bind, struct socket *sock, struct sockaddr *address,
 	/* This tests that we can associate multiple elements
 	 * with the local storage.
 	 */
-	storage = bpf_sk_storage_get(&sk_storage_map2, sock->sk, 0,
+	storage = bpf_sk_storage_get(&sk_storage_map2, sk, 0,
 				     BPF_LOCAL_STORAGE_GET_F_CREATE);
 	if (!storage)
 		return 0;
 
-	if (bpf_sk_storage_delete(&sk_storage_map2, sock->sk))
+	if (bpf_sk_storage_delete(&sk_storage_map2, sk))
 		return 0;
 
-	storage = bpf_sk_storage_get(&sk_storage_map2, sock->sk, 0,
+	storage = bpf_sk_storage_get(&sk_storage_map2, sk, 0,
 				     BPF_LOCAL_STORAGE_GET_F_CREATE);
 	if (!storage)
 		return 0;
 
-	if (bpf_sk_storage_delete(&sk_storage_map, sock->sk))
+	if (bpf_sk_storage_delete(&sk_storage_map, sk))
 		return 0;
 
 	/* Ensure that the sk_storage_map is disconnected from the storage. */
-	if (!sock->sk->sk_bpf_storage || sock->sk->sk_bpf_storage->smap)
+	if (!sk->sk_bpf_storage || sk->sk_bpf_storage->smap)
 		return 0;
 
 	sk_storage_result = 0;
@@ -185,11 +186,12 @@ int BPF_PROG(socket_post_create, struct socket *sock, int family, int type,
 {
 	__u32 pid = bpf_get_current_pid_tgid() >> 32;
 	struct local_storage *storage;
+	struct sock *sk = sock->sk;
 
-	if (pid != monitored_pid)
+	if (pid != monitored_pid || !sk)
 		return 0;
 
-	storage = bpf_sk_storage_get(&sk_storage_map, sock->sk, 0,
+	storage = bpf_sk_storage_get(&sk_storage_map, sk, 0,
 				     BPF_LOCAL_STORAGE_GET_F_CREATE);
 	if (!storage)
 		return 0;
diff --git a/tools/testing/selftests/bpf/progs/lsm_cgroup.c b/tools/testing/selftests/bpf/progs/lsm_cgroup.c
index 02c11d16b6..d7598538aa 100644
--- a/tools/testing/selftests/bpf/progs/lsm_cgroup.c
+++ b/tools/testing/selftests/bpf/progs/lsm_cgroup.c
@@ -103,11 +103,15 @@ static __always_inline int real_bind(struct socket *sock,
 				     int addrlen)
 {
 	struct sockaddr_ll sa = {};
+	struct sock *sk = sock->sk;
 
-	if (sock->sk->__sk_common.skc_family != AF_PACKET)
+	if (!sk)
+		return 1;
+
+	if (sk->__sk_common.skc_family != AF_PACKET)
 		return 1;
 
-	if (sock->sk->sk_kern_sock)
+	if (sk->sk_kern_sock)
 		return 1;
 
 	bpf_probe_read_kernel(&sa, sizeof(sa), address);
diff --git a/tools/testing/selftests/bpf/progs/verifier_global_subprogs.c b/tools/testing/selftests/bpf/progs/verifier_global_subprogs.c
index baff5ffe94..a9fc30ed4d 100644
--- a/tools/testing/selftests/bpf/progs/verifier_global_subprogs.c
+++ b/tools/testing/selftests/bpf/progs/verifier_global_subprogs.c
@@ -8,6 +8,13 @@
 #include "xdp_metadata.h"
 #include "bpf_kfuncs.h"
 
+/* The compiler may be able to detect the access to uninitialized
+   memory in the routines performing out of bound memory accesses and
+   emit warnings about it.  This is the case of GCC. */
+#if !defined(__clang__)
+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+#endif
+
 int arr[1];
 int unkn_idx;
 const volatile bool call_dead_subprog = false;
diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c
index 024a0faafb..43612de44f 100644
--- a/tools/testing/selftests/bpf/test_sockmap.c
+++ b/tools/testing/selftests/bpf/test_sockmap.c
@@ -2104,9 +2104,9 @@ out:
 		free(options.whitelist);
 	if (options.blacklist)
 		free(options.blacklist);
+	close(cg_fd);
 	if (cg_created)
 		cleanup_cgroup_environment();
-	close(cg_fd);
 	return err;
 }
 
diff --git a/tools/testing/selftests/bpf/test_tc_tunnel.sh b/tools/testing/selftests/bpf/test_tc_tunnel.sh
index 910044f089..7989ec6084 100755
--- a/tools/testing/selftests/bpf/test_tc_tunnel.sh
+++ b/tools/testing/selftests/bpf/test_tc_tunnel.sh
@@ -72,7 +72,6 @@ cleanup() {
 server_listen() {
 	ip netns exec "${ns2}" nc "${netcat_opt}" -l "${port}" > "${outfile}" &
 	server_pid=$!
-	sleep 0.2
 }
 
 client_connect() {
@@ -93,6 +92,16 @@ verify_data() {
 	fi
 }
 
+wait_for_port() {
+	for i in $(seq 20); do
+		if ip netns exec "${ns2}" ss ${2:--4}OHntl | grep -q "$1"; then
+			return 0
+		fi
+		sleep 0.1
+	done
+	return 1
+}
+
 set -e
 
 # no arguments: automated test, run all
@@ -193,6 +202,7 @@ setup
 # basic communication works
 echo "test basic connectivity"
 server_listen
+wait_for_port ${port} ${netcat_opt}
 client_connect
 verify_data
 
@@ -204,6 +214,7 @@ ip netns exec "${ns1}" tc filter add dev veth1 egress \
 	section "encap_${tuntype}_${mac}"
 echo "test bpf encap without decap (expect failure)"
 server_listen
+wait_for_port ${port} ${netcat_opt}
 ! client_connect
 
 if [[ "$tuntype" =~ "udp" ]]; then
diff --git a/tools/testing/selftests/cgroup/cgroup_util.c b/tools/testing/selftests/cgroup/cgroup_util.c
index 0340d4ca8f..432db923bc 100644
--- a/tools/testing/selftests/cgroup/cgroup_util.c
+++ b/tools/testing/selftests/cgroup/cgroup_util.c
@@ -195,10 +195,10 @@ int cg_write_numeric(const char *cgroup, const char *control, long value)
 	return cg_write(cgroup, control, buf);
 }
 
-int cg_find_unified_root(char *root, size_t len)
+int cg_find_unified_root(char *root, size_t len, bool *nsdelegate)
 {
 	char buf[10 * PAGE_SIZE];
-	char *fs, *mount, *type;
+	char *fs, *mount, *type, *options;
 	const char delim[] = "\n\t ";
 
 	if (read_text("/proc/self/mounts", buf, sizeof(buf)) <= 0)
@@ -211,12 +211,14 @@ int cg_find_unified_root(char *root, size_t len)
 	for (fs = strtok(buf, delim); fs; fs = strtok(NULL, delim)) {
 		mount = strtok(NULL, delim);
 		type = strtok(NULL, delim);
-		strtok(NULL, delim);
+		options = strtok(NULL, delim);
 		strtok(NULL, delim);
 		strtok(NULL, delim);
 
 		if (strcmp(type, "cgroup2") == 0) {
 			strncpy(root, mount, len);
+			if (nsdelegate)
+				*nsdelegate = !!strstr(options, "nsdelegate");
 			return 0;
 		}
 	}
diff --git a/tools/testing/selftests/cgroup/cgroup_util.h b/tools/testing/selftests/cgroup/cgroup_util.h
index 1df7f20221..89e8519fb2 100644
--- a/tools/testing/selftests/cgroup/cgroup_util.h
+++ b/tools/testing/selftests/cgroup/cgroup_util.h
@@ -21,7 +21,7 @@ static inline int values_close(long a, long b, int err)
 	return abs(a - b) <= (a + b) / 100 * err;
 }
 
-extern int cg_find_unified_root(char *root, size_t len);
+extern int cg_find_unified_root(char *root, size_t len, bool *nsdelegate);
 extern char *cg_name(const char *root, const char *name);
 extern char *cg_name_indexed(const char *root, const char *name, int index);
 extern char *cg_control(const char *cgroup, const char *control);
diff --git a/tools/testing/selftests/cgroup/test_core.c b/tools/testing/selftests/cgroup/test_core.c
index 80aa6b2373..a5672a91d2 100644
--- a/tools/testing/selftests/cgroup/test_core.c
+++ b/tools/testing/selftests/cgroup/test_core.c
@@ -18,6 +18,8 @@
 #include "../kselftest.h"
 #include "cgroup_util.h"
 
+static bool nsdelegate;
+
 static int touch_anon(char *buf, size_t size)
 {
 	int fd;
@@ -775,6 +777,9 @@ static int test_cgcore_lesser_ns_open(const char *root)
 	pid_t pid;
 	int status;
 
+	if (!nsdelegate)
+		return KSFT_SKIP;
+
 	cg_test_a = cg_name(root, "cg_test_a");
 	cg_test_b = cg_name(root, "cg_test_b");
 
@@ -862,7 +867,7 @@ int main(int argc, char *argv[])
 	char root[PATH_MAX];
 	int i, ret = EXIT_SUCCESS;
 
-	if (cg_find_unified_root(root, sizeof(root)))
+	if (cg_find_unified_root(root, sizeof(root), &nsdelegate))
 		ksft_exit_skip("cgroup v2 isn't mounted\n");
 
 	if (cg_read_strstr(root, "cgroup.subtree_control", "memory"))
diff --git a/tools/testing/selftests/cgroup/test_cpu.c b/tools/testing/selftests/cgroup/test_cpu.c
index 24020a2c68..186bf96f6a 100644
--- a/tools/testing/selftests/cgroup/test_cpu.c
+++ b/tools/testing/selftests/cgroup/test_cpu.c
@@ -700,7 +700,7 @@ int main(int argc, char *argv[])
 	char root[PATH_MAX];
 	int i, ret = EXIT_SUCCESS;
 
-	if (cg_find_unified_root(root, sizeof(root)))
+	if (cg_find_unified_root(root, sizeof(root), NULL))
 		ksft_exit_skip("cgroup v2 isn't mounted\n");
 
 	if (cg_read_strstr(root, "cgroup.subtree_control", "cpu"))
diff --git a/tools/testing/selftests/cgroup/test_cpuset.c b/tools/testing/selftests/cgroup/test_cpuset.c
index b061ed1e05..4034d14ba6 100644
--- a/tools/testing/selftests/cgroup/test_cpuset.c
+++ b/tools/testing/selftests/cgroup/test_cpuset.c
@@ -249,7 +249,7 @@ int main(int argc, char *argv[])
 	char root[PATH_MAX];
 	int i, ret = EXIT_SUCCESS;
 
-	if (cg_find_unified_root(root, sizeof(root)))
+	if (cg_find_unified_root(root, sizeof(root), NULL))
 		ksft_exit_skip("cgroup v2 isn't mounted\n");
 
 	if (cg_read_strstr(root, "cgroup.subtree_control", "cpuset"))
diff --git a/tools/testing/selftests/cgroup/test_freezer.c b/tools/testing/selftests/cgroup/test_freezer.c
index 8845353aca..8730645d36 100644
--- a/tools/testing/selftests/cgroup/test_freezer.c
+++ b/tools/testing/selftests/cgroup/test_freezer.c
@@ -827,7 +827,7 @@ int main(int argc, char *argv[])
 	char root[PATH_MAX];
 	int i, ret = EXIT_SUCCESS;
 
-	if (cg_find_unified_root(root, sizeof(root)))
+	if (cg_find_unified_root(root, sizeof(root), NULL))
 		ksft_exit_skip("cgroup v2 isn't mounted\n");
 	for (i = 0; i < ARRAY_SIZE(tests); i++) {
 		switch (tests[i].fn(root)) {
diff --git a/tools/testing/selftests/cgroup/test_hugetlb_memcg.c b/tools/testing/selftests/cgroup/test_hugetlb_memcg.c
index f0fefeb4cc..856f9508ea 100644
--- a/tools/testing/selftests/cgroup/test_hugetlb_memcg.c
+++ b/tools/testing/selftests/cgroup/test_hugetlb_memcg.c
@@ -214,7 +214,7 @@ int main(int argc, char **argv)
 		return ret;
 	}
 
-	if (cg_find_unified_root(root, sizeof(root)))
+	if (cg_find_unified_root(root, sizeof(root), NULL))
 		ksft_exit_skip("cgroup v2 isn't mounted\n");
 
 	switch (test_hugetlb_memcg(root)) {
diff --git a/tools/testing/selftests/cgroup/test_kill.c b/tools/testing/selftests/cgroup/test_kill.c
index 6153690319..0e5bb6c730 100644
--- a/tools/testing/selftests/cgroup/test_kill.c
+++ b/tools/testing/selftests/cgroup/test_kill.c
@@ -276,7 +276,7 @@ int main(int argc, char *argv[])
 	char root[PATH_MAX];
 	int i, ret = EXIT_SUCCESS;
 
-	if (cg_find_unified_root(root, sizeof(root)))
+	if (cg_find_unified_root(root, sizeof(root), NULL))
 		ksft_exit_skip("cgroup v2 isn't mounted\n");
 	for (i = 0; i < ARRAY_SIZE(tests); i++) {
 		switch (tests[i].fn(root)) {
diff --git a/tools/testing/selftests/cgroup/test_kmem.c b/tools/testing/selftests/cgroup/test_kmem.c
index c82f974b85..137506db03 100644
--- a/tools/testing/selftests/cgroup/test_kmem.c
+++ b/tools/testing/selftests/cgroup/test_kmem.c
@@ -420,7 +420,7 @@ int main(int argc, char **argv)
 	char root[PATH_MAX];
 	int i, ret = EXIT_SUCCESS;
 
-	if (cg_find_unified_root(root, sizeof(root)))
+	if (cg_find_unified_root(root, sizeof(root), NULL))
 		ksft_exit_skip("cgroup v2 isn't mounted\n");
 
 	/*
diff --git a/tools/testing/selftests/cgroup/test_memcontrol.c b/tools/testing/selftests/cgroup/test_memcontrol.c
index c7c9572003..b462416b38 100644
--- a/tools/testing/selftests/cgroup/test_memcontrol.c
+++ b/tools/testing/selftests/cgroup/test_memcontrol.c
@@ -1314,7 +1314,7 @@ int main(int argc, char **argv)
 	char root[PATH_MAX];
 	int i, proc_status, ret = EXIT_SUCCESS;
 
-	if (cg_find_unified_root(root, sizeof(root)))
+	if (cg_find_unified_root(root, sizeof(root), NULL))
 		ksft_exit_skip("cgroup v2 isn't mounted\n");
 
 	/*
diff --git a/tools/testing/selftests/cgroup/test_zswap.c b/tools/testing/selftests/cgroup/test_zswap.c
index f0e488ed90..ef7f395453 100644
--- a/tools/testing/selftests/cgroup/test_zswap.c
+++ b/tools/testing/selftests/cgroup/test_zswap.c
@@ -440,7 +440,7 @@ int main(int argc, char **argv)
 	char root[PATH_MAX];
 	int i, ret = EXIT_SUCCESS;
 
-	if (cg_find_unified_root(root, sizeof(root)))
+	if (cg_find_unified_root(root, sizeof(root), NULL))
 		ksft_exit_skip("cgroup v2 isn't mounted\n");
 
 	if (!zswap_configured())
diff --git a/tools/testing/selftests/damon/_damon_sysfs.py b/tools/testing/selftests/damon/_damon_sysfs.py
index d23d7398a2..fe77d7e73a 100644
--- a/tools/testing/selftests/damon/_damon_sysfs.py
+++ b/tools/testing/selftests/damon/_damon_sysfs.py
@@ -287,6 +287,8 @@ class DamonCtx:
         nr_schemes_file = os.path.join(
                 self.sysfs_dir(), 'schemes', 'nr_schemes')
         content, err = read_file(nr_schemes_file)
+        if err is not None:
+            return err
         if int(content) != len(self.schemes):
             err = write_file(nr_schemes_file, '%d' % len(self.schemes))
             if err != None:
diff --git a/tools/testing/selftests/drivers/net/mlxsw/mlxsw_lib.sh b/tools/testing/selftests/drivers/net/mlxsw/mlxsw_lib.sh
index 6369927e9c..48395cfd4f 100644
--- a/tools/testing/selftests/drivers/net/mlxsw/mlxsw_lib.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/mlxsw_lib.sh
@@ -42,7 +42,7 @@ __mlxsw_only_on_spectrum()
 	local src=$1; shift
 
 	if ! mlxsw_on_spectrum "$rev"; then
-		log_test_skip $src:$caller "(Spectrum-$rev only)"
+		log_test_xfail $src:$caller "(Spectrum-$rev only)"
 		return 1
 	fi
 }
diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh
index a88d8a8c85..899b689260 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh
@@ -47,7 +47,6 @@ for current_test in ${TESTS:-$ALL_TESTS}; do
 		RET=0
 		target=$(${current_test}_get_target "$should_fail")
 		if ((target == 0)); then
-			log_test_skip "'$current_test' should_fail=$should_fail test"
 			continue
 		fi
 
diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh
index f981c957f0..482ebb744e 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh
@@ -52,7 +52,6 @@ for current_test in ${TESTS:-$ALL_TESTS}; do
 			RET=0
 			target=$(${current_test}_get_target "$should_fail")
 			if ((target == 0)); then
-				log_test_skip "'$current_test' [$profile] should_fail=$should_fail test"
 				continue
 			fi
 			${current_test}_setup_prepare
diff --git a/tools/testing/selftests/filesystems/binderfs/Makefile b/tools/testing/selftests/filesystems/binderfs/Makefile
index c2f7cef919..eb4c3b4119 100644
--- a/tools/testing/selftests/filesystems/binderfs/Makefile
+++ b/tools/testing/selftests/filesystems/binderfs/Makefile
@@ -3,6 +3,4 @@
 CFLAGS += $(KHDR_INCLUDES) -pthread
 TEST_GEN_PROGS := binderfs_test
 
-binderfs_test: binderfs_test.c ../../kselftest.h ../../kselftest_harness.h
-
 include ../../lib.mk
diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc
index b9c21a81d2..c0cdad4c40 100644
--- a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc
+++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc
@@ -53,7 +53,7 @@ fi
 
 echo > dynamic_events
 
-if [ "$FIELDS" ] ; then
+if [ "$FIELDS" -a "$FPROBES" ] ; then
 echo "t:tpevent ${TP2} obj_size=s->object_size" >> dynamic_events
 echo "f:fpevent ${TP3}%return path=\$retval->name:string" >> dynamic_events
 echo "t:tpevent2 ${TP4} p->se.group_node.next->prev" >> dynamic_events
diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_entry_arg.tc b/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_entry_arg.tc
index d183b8a8ec..1e251ce299 100644
--- a/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_entry_arg.tc
+++ b/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_entry_arg.tc
@@ -11,7 +11,7 @@ echo 1 > events/tests/enable
 echo > trace
 cat trace > /dev/null
 
-function streq() {
+streq() {
 	test $1 = $2
 }
 
diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc b/tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc
index d3a79da215..5f72abe6fa 100644
--- a/tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc
+++ b/tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc
@@ -1,7 +1,7 @@
 #!/bin/sh
 # SPDX-License-Identifier: GPL-2.0
 # description: Generic dynamic event - check if duplicate events are caught
-# requires: dynamic_events "e[:[<group>/][<event>]] <attached-group>.<attached-event> [<args>]":README
+# requires: dynamic_events "e[:[<group>/][<event>]] <attached-group>.<attached-event> [<args>]":README events/syscalls/sys_enter_openat
 
 echo 0 > events/enable
 
diff --git a/tools/testing/selftests/ftrace/test.d/filter/event-filter-function.tc b/tools/testing/selftests/ftrace/test.d/filter/event-filter-function.tc
index 3f74c09c56..118247b8dd 100644
--- a/tools/testing/selftests/ftrace/test.d/filter/event-filter-function.tc
+++ b/tools/testing/selftests/ftrace/test.d/filter/event-filter-function.tc
@@ -10,7 +10,6 @@ fail() { #msg
 }
 
 sample_events() {
-    echo > trace
     echo 1 > events/kmem/kmem_cache_free/enable
     echo 1 > tracing_on
     ls > /dev/null
@@ -22,6 +21,7 @@ echo 0 > tracing_on
 echo 0 > events/enable
 
 echo "Get the most frequently calling function"
+echo > trace
 sample_events
 
 target_func=`cat trace | grep -o 'call_site=\([^+]*\)' | sed 's/call_site=//' | sort | uniq -c | sort | tail -n 1 | sed 's/^[ 0-9]*//'`
@@ -32,7 +32,16 @@ echo > trace
 
 echo "Test event filter function name"
 echo "call_site.function == $target_func" > events/kmem/kmem_cache_free/filter
+
+sample_events
+max_retry=10
+while [ `grep kmem_cache_free trace| wc -l` -eq 0 ]; do
 sample_events
+max_retry=$((max_retry - 1))
+if [ $max_retry -eq 0 ]; then
+	exit_fail
+fi
+done
 
 hitcnt=`grep kmem_cache_free trace| grep $target_func | wc -l`
 misscnt=`grep kmem_cache_free trace| grep -v $target_func | wc -l`
@@ -49,7 +58,16 @@ address=`grep " ${target_func}\$" /proc/kallsyms | cut -d' ' -f1`
 
 echo "Test event filter function address"
 echo "call_site.function == 0x$address" > events/kmem/kmem_cache_free/filter
+echo > trace
+sample_events
+max_retry=10
+while [ `grep kmem_cache_free trace| wc -l` -eq 0 ]; do
 sample_events
+max_retry=$((max_retry - 1))
+if [ $max_retry -eq 0 ]; then
+	exit_fail
+fi
+done
 
 hitcnt=`grep kmem_cache_free trace| grep $target_func | wc -l`
 misscnt=`grep kmem_cache_free trace| grep -v $target_func | wc -l`
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc
index 1f6981ef7a..ba19b81cef 100644
--- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc
@@ -30,7 +30,8 @@ find_dot_func() {
 	fi
 
 	grep " [tT] .*\.isra\..*" /proc/kallsyms | cut -f 3 -d " " | while read f; do
-		if grep -s $f available_filter_functions; then
+		cnt=`grep -s $f available_filter_functions | wc -l`;
+		if [ $cnt -eq 1 ]; then
 			echo $f
 			break
 		fi
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_entry_arg.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_entry_arg.tc
index 53b82f36a1..e50470b531 100644
--- a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_entry_arg.tc
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_entry_arg.tc
@@ -11,7 +11,7 @@ echo 1 > events/kprobes/enable
 echo > trace
 cat trace > /dev/null
 
-function streq() {
+streq() {
 	test $1 = $2
 }
 
diff --git a/tools/testing/selftests/futex/functional/futex_requeue_pi.c b/tools/testing/selftests/futex/functional/futex_requeue_pi.c
index 7f3ca5c78d..215c6cb539 100644
--- a/tools/testing/selftests/futex/functional/futex_requeue_pi.c
+++ b/tools/testing/selftests/futex/functional/futex_requeue_pi.c
@@ -360,7 +360,7 @@ out:
 
 int main(int argc, char *argv[])
 {
-	const char *test_name;
+	char *test_name;
 	int c, ret;
 
 	while ((c = getopt(argc, argv, "bchlot:v:")) != -1) {
diff --git a/tools/testing/selftests/kcmp/kcmp_test.c b/tools/testing/selftests/kcmp/kcmp_test.c
index 25110c7c0b..d7a8e321bb 100644
--- a/tools/testing/selftests/kcmp/kcmp_test.c
+++ b/tools/testing/selftests/kcmp/kcmp_test.c
@@ -91,7 +91,7 @@ int main(int argc, char **argv)
 		ksft_print_header();
 		ksft_set_plan(3);
 
-		fd2 = open(kpath, O_RDWR, 0644);
+		fd2 = open(kpath, O_RDWR);
 		if (fd2 < 0) {
 			perror("Can't open file");
 			ksft_exit_fail();
diff --git a/tools/testing/selftests/kselftest/ktap_helpers.sh b/tools/testing/selftests/kselftest/ktap_helpers.sh
index f2fbb914e0..79a125eb24 100644
--- a/tools/testing/selftests/kselftest/ktap_helpers.sh
+++ b/tools/testing/selftests/kselftest/ktap_helpers.sh
@@ -43,7 +43,7 @@ __ktap_test() {
 	directive="$3" # optional
 
 	local directive_str=
-	[[ ! -z "$directive" ]] && directive_str="# $directive"
+	[ ! -z "$directive" ] && directive_str="# $directive"
 
 	echo $result $KTAP_TESTNO $description $directive_str
 
@@ -99,7 +99,7 @@ ktap_exit_fail_msg() {
 ktap_finished() {
 	ktap_print_totals
 
-	if [ $(("$KTAP_CNT_PASS" + "$KTAP_CNT_SKIP")) -eq "$KSFT_NUM_TESTS" ]; then
+	if [ $((KTAP_CNT_PASS + KTAP_CNT_SKIP)) -eq "$KSFT_NUM_TESTS" ]; then
 		exit "$KSFT_PASS"
 	else
 		exit "$KSFT_FAIL"
diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h
index 3c8f2965c2..b634969cbb 100644
--- a/tools/testing/selftests/kselftest_harness.h
+++ b/tools/testing/selftests/kselftest_harness.h
@@ -1216,7 +1216,7 @@ void __run_test(struct __fixture_metadata *f,
 		struct __test_metadata *t)
 {
 	struct __test_xfail *xfail;
-	char *test_name;
+	char test_name[1024];
 	const char *diagnostic;
 
 	/* reset test struct */
@@ -1227,12 +1227,8 @@ void __run_test(struct __fixture_metadata *f,
 	memset(t->env, 0, sizeof(t->env));
 	memset(t->results->reason, 0, sizeof(t->results->reason));
 
-	if (asprintf(&test_name, "%s%s%s.%s", f->name,
-		variant->name[0] ? "." : "", variant->name, t->name) == -1) {
-		ksft_print_msg("ERROR ALLOCATING MEMORY\n");
-		t->exit_code = KSFT_FAIL;
-		_exit(t->exit_code);
-	}
+	snprintf(test_name, sizeof(test_name), "%s%s%s.%s",
+		 f->name, variant->name[0] ? "." : "", variant->name, t->name);
 
 	ksft_print_msg(" RUN           %s ...\n", test_name);
 
@@ -1270,7 +1266,6 @@ void __run_test(struct __fixture_metadata *f,
 
 	ksft_test_result_code(t->exit_code, test_name,
 			      diagnostic ? "%s" : NULL, diagnostic);
-	free(test_name);
 }
 
 static int test_harness_run(int argc, char **argv)
diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk
index da2cade3ba..8ae203d8ed 100644
--- a/tools/testing/selftests/lib.mk
+++ b/tools/testing/selftests/lib.mk
@@ -7,6 +7,8 @@ else ifneq ($(filter -%,$(LLVM)),)
 LLVM_SUFFIX := $(LLVM)
 endif
 
+CLANG := $(LLVM_PREFIX)clang$(LLVM_SUFFIX)
+
 CLANG_TARGET_FLAGS_arm          := arm-linux-gnueabi
 CLANG_TARGET_FLAGS_arm64        := aarch64-linux-gnu
 CLANG_TARGET_FLAGS_hexagon      := hexagon-linux-musl
@@ -18,7 +20,13 @@ CLANG_TARGET_FLAGS_riscv        := riscv64-linux-gnu
 CLANG_TARGET_FLAGS_s390         := s390x-linux-gnu
 CLANG_TARGET_FLAGS_x86          := x86_64-linux-gnu
 CLANG_TARGET_FLAGS_x86_64       := x86_64-linux-gnu
-CLANG_TARGET_FLAGS              := $(CLANG_TARGET_FLAGS_$(ARCH))
+
+# Default to host architecture if ARCH is not explicitly given.
+ifeq ($(ARCH),)
+CLANG_TARGET_FLAGS := $(shell $(CLANG) -print-target-triple)
+else
+CLANG_TARGET_FLAGS := $(CLANG_TARGET_FLAGS_$(ARCH))
+endif
 
 ifeq ($(CROSS_COMPILE),)
 ifeq ($(CLANG_TARGET_FLAGS),)
@@ -30,7 +38,7 @@ else
 CLANG_FLAGS     += --target=$(notdir $(CROSS_COMPILE:%-=%))
 endif # CROSS_COMPILE
 
-CC := $(LLVM_PREFIX)clang$(LLVM_SUFFIX) $(CLANG_FLAGS) -fintegrated-as
+CC := $(CLANG) $(CLANG_FLAGS) -fintegrated-as
 else
 CC := $(CROSS_COMPILE)gcc
 endif # LLVM
diff --git a/tools/testing/selftests/mm/compaction_test.c b/tools/testing/selftests/mm/compaction_test.c
index 533999b6c2..e140558e6f 100644
--- a/tools/testing/selftests/mm/compaction_test.c
+++ b/tools/testing/selftests/mm/compaction_test.c
@@ -82,12 +82,16 @@ int prereq(void)
 	return -1;
 }
 
-int check_compaction(unsigned long mem_free, unsigned int hugepage_size)
+int check_compaction(unsigned long mem_free, unsigned long hugepage_size,
+		     unsigned long initial_nr_hugepages)
 {
+	unsigned long nr_hugepages_ul;
 	int fd, ret = -1;
 	int compaction_index = 0;
-	char initial_nr_hugepages[10] = {0};
-	char nr_hugepages[10] = {0};
+	char nr_hugepages[20] = {0};
+	char init_nr_hugepages[20] = {0};
+
+	sprintf(init_nr_hugepages, "%lu", initial_nr_hugepages);
 
 	/* We want to test with 80% of available memory. Else, OOM killer comes
 	   in to play */
@@ -101,21 +105,6 @@ int check_compaction(unsigned long mem_free, unsigned int hugepage_size)
 		goto out;
 	}
 
-	if (read(fd, initial_nr_hugepages, sizeof(initial_nr_hugepages)) <= 0) {
-		ksft_print_msg("Failed to read from /proc/sys/vm/nr_hugepages: %s\n",
-			       strerror(errno));
-		goto close_fd;
-	}
-
-	/* Start with the initial condition of 0 huge pages*/
-	if (write(fd, "0", sizeof(char)) != sizeof(char)) {
-		ksft_print_msg("Failed to write 0 to /proc/sys/vm/nr_hugepages: %s\n",
-			       strerror(errno));
-		goto close_fd;
-	}
-
-	lseek(fd, 0, SEEK_SET);
-
 	/* Request a large number of huge pages. The Kernel will allocate
 	   as much as it can */
 	if (write(fd, "100000", (6*sizeof(char))) != (6*sizeof(char))) {
@@ -134,22 +123,27 @@ int check_compaction(unsigned long mem_free, unsigned int hugepage_size)
 
 	/* We should have been able to request at least 1/3 rd of the memory in
 	   huge pages */
-	compaction_index = mem_free/(atoi(nr_hugepages) * hugepage_size);
+	nr_hugepages_ul = strtoul(nr_hugepages, NULL, 10);
+	if (!nr_hugepages_ul) {
+		ksft_print_msg("ERROR: No memory is available as huge pages\n");
+		goto close_fd;
+	}
+	compaction_index = mem_free/(nr_hugepages_ul * hugepage_size);
 
 	lseek(fd, 0, SEEK_SET);
 
-	if (write(fd, initial_nr_hugepages, strlen(initial_nr_hugepages))
-	    != strlen(initial_nr_hugepages)) {
+	if (write(fd, init_nr_hugepages, strlen(init_nr_hugepages))
+	    != strlen(init_nr_hugepages)) {
 		ksft_print_msg("Failed to write value to /proc/sys/vm/nr_hugepages: %s\n",
 			       strerror(errno));
 		goto close_fd;
 	}
 
-	ksft_print_msg("Number of huge pages allocated = %d\n",
-		       atoi(nr_hugepages));
+	ksft_print_msg("Number of huge pages allocated = %lu\n",
+		       nr_hugepages_ul);
 
 	if (compaction_index > 3) {
-		ksft_print_msg("ERROR: Less that 1/%d of memory is available\n"
+		ksft_print_msg("ERROR: Less than 1/%d of memory is available\n"
 			       "as huge pages\n", compaction_index);
 		goto close_fd;
 	}
@@ -163,6 +157,41 @@ int check_compaction(unsigned long mem_free, unsigned int hugepage_size)
 	return ret;
 }
 
+int set_zero_hugepages(unsigned long *initial_nr_hugepages)
+{
+	int fd, ret = -1;
+	char nr_hugepages[20] = {0};
+
+	fd = open("/proc/sys/vm/nr_hugepages", O_RDWR | O_NONBLOCK);
+	if (fd < 0) {
+		ksft_print_msg("Failed to open /proc/sys/vm/nr_hugepages: %s\n",
+			       strerror(errno));
+		goto out;
+	}
+	if (read(fd, nr_hugepages, sizeof(nr_hugepages)) <= 0) {
+		ksft_print_msg("Failed to read from /proc/sys/vm/nr_hugepages: %s\n",
+			       strerror(errno));
+		goto close_fd;
+	}
+
+	lseek(fd, 0, SEEK_SET);
+
+	/* Start with the initial condition of 0 huge pages */
+	if (write(fd, "0", sizeof(char)) != sizeof(char)) {
+		ksft_print_msg("Failed to write 0 to /proc/sys/vm/nr_hugepages: %s\n",
+			       strerror(errno));
+		goto close_fd;
+	}
+
+	*initial_nr_hugepages = strtoul(nr_hugepages, NULL, 10);
+	ret = 0;
+
+ close_fd:
+	close(fd);
+
+ out:
+	return ret;
+}
 
 int main(int argc, char **argv)
 {
@@ -173,14 +202,19 @@ int main(int argc, char **argv)
 	unsigned long mem_free = 0;
 	unsigned long hugepage_size = 0;
 	long mem_fragmentable_MB = 0;
+	unsigned long initial_nr_hugepages;
 
 	ksft_print_header();
 
 	if (prereq() || geteuid())
-		return ksft_exit_skip("Prerequisites unsatisfied\n");
+		ksft_exit_skip("Prerequisites unsatisfied\n");
 
 	ksft_set_plan(1);
 
+	/* Start the test without hugepages reducing mem_free */
+	if (set_zero_hugepages(&initial_nr_hugepages))
+		ksft_exit_fail();
+
 	lim.rlim_cur = RLIM_INFINITY;
 	lim.rlim_max = RLIM_INFINITY;
 	if (setrlimit(RLIMIT_MEMLOCK, &lim))
@@ -224,8 +258,9 @@ int main(int argc, char **argv)
 		entry = entry->next;
 	}
 
-	if (check_compaction(mem_free, hugepage_size) == 0)
-		return ksft_exit_pass();
+	if (check_compaction(mem_free, hugepage_size,
+			     initial_nr_hugepages) == 0)
+		ksft_exit_pass();
 
-	return ksft_exit_fail();
+	ksft_exit_fail();
 }
diff --git a/tools/testing/selftests/mm/cow.c b/tools/testing/selftests/mm/cow.c
index 363bf5f801..fe078d6e18 100644
--- a/tools/testing/selftests/mm/cow.c
+++ b/tools/testing/selftests/mm/cow.c
@@ -1779,5 +1779,5 @@ int main(int argc, char **argv)
 	if (err)
 		ksft_exit_fail_msg("%d out of %d tests failed\n",
 				   err, ksft_test_num());
-	return ksft_exit_pass();
+	ksft_exit_pass();
 }
diff --git a/tools/testing/selftests/mm/gup_longterm.c b/tools/testing/selftests/mm/gup_longterm.c
index ad168d35b2..d7eaca5bbe 100644
--- a/tools/testing/selftests/mm/gup_longterm.c
+++ b/tools/testing/selftests/mm/gup_longterm.c
@@ -456,5 +456,5 @@ int main(int argc, char **argv)
 	if (err)
 		ksft_exit_fail_msg("%d out of %d tests failed\n",
 				   err, ksft_test_num());
-	return ksft_exit_pass();
+	ksft_exit_pass();
 }
diff --git a/tools/testing/selftests/mm/gup_test.c b/tools/testing/selftests/mm/gup_test.c
index 18a49c70d4..bdeaac67ff 100644
--- a/tools/testing/selftests/mm/gup_test.c
+++ b/tools/testing/selftests/mm/gup_test.c
@@ -1,3 +1,4 @@
+#define __SANE_USERSPACE_TYPES__ // Use ll64
 #include <fcntl.h>
 #include <errno.h>
 #include <stdio.h>
@@ -228,7 +229,7 @@ int main(int argc, char **argv)
 			break;
 		}
 		ksft_test_result_skip("Please run this test as root\n");
-		return ksft_exit_pass();
+		ksft_exit_pass();
 	}
 
 	p = mmap(NULL, size, PROT_READ | PROT_WRITE, flags, filed, 0);
@@ -267,5 +268,5 @@ int main(int argc, char **argv)
 
 	free(tid);
 
-	return ksft_exit_pass();
+	ksft_exit_pass();
 }
diff --git a/tools/testing/selftests/mm/ksm_functional_tests.c b/tools/testing/selftests/mm/ksm_functional_tests.c
index d615767e39..508287560c 100644
--- a/tools/testing/selftests/mm/ksm_functional_tests.c
+++ b/tools/testing/selftests/mm/ksm_functional_tests.c
@@ -646,5 +646,5 @@ int main(int argc, char **argv)
 	if (err)
 		ksft_exit_fail_msg("%d out of %d tests failed\n",
 				   err, ksft_test_num());
-	return ksft_exit_pass();
+	ksft_exit_pass();
 }
diff --git a/tools/testing/selftests/mm/madv_populate.c b/tools/testing/selftests/mm/madv_populate.c
index 17bcb07f19..ef7d911da1 100644
--- a/tools/testing/selftests/mm/madv_populate.c
+++ b/tools/testing/selftests/mm/madv_populate.c
@@ -307,5 +307,5 @@ int main(int argc, char **argv)
 	if (err)
 		ksft_exit_fail_msg("%d out of %d tests failed\n",
 				   err, ksft_test_num());
-	return ksft_exit_pass();
+	ksft_exit_pass();
 }
diff --git a/tools/testing/selftests/mm/mdwe_test.c b/tools/testing/selftests/mm/mdwe_test.c
index 1e01d3ddc1..200bedcdc3 100644
--- a/tools/testing/selftests/mm/mdwe_test.c
+++ b/tools/testing/selftests/mm/mdwe_test.c
@@ -7,7 +7,6 @@
 #include <linux/mman.h>
 #include <linux/prctl.h>
 
-#define _GNU_SOURCE
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/auxv.h>
diff --git a/tools/testing/selftests/mm/mkdirty.c b/tools/testing/selftests/mm/mkdirty.c
index 301abb99e0..b8a7efe920 100644
--- a/tools/testing/selftests/mm/mkdirty.c
+++ b/tools/testing/selftests/mm/mkdirty.c
@@ -375,5 +375,5 @@ int main(void)
 	if (err)
 		ksft_exit_fail_msg("%d out of %d tests failed\n",
 				   err, ksft_test_num());
-	return ksft_exit_pass();
+	ksft_exit_pass();
 }
diff --git a/tools/testing/selftests/mm/pagemap_ioctl.c b/tools/testing/selftests/mm/pagemap_ioctl.c
index d59517ed3d..2d785aca72 100644
--- a/tools/testing/selftests/mm/pagemap_ioctl.c
+++ b/tools/testing/selftests/mm/pagemap_ioctl.c
@@ -1484,7 +1484,7 @@ int main(int argc, char *argv[])
 	ksft_print_header();
 
 	if (init_uffd())
-		return ksft_exit_pass();
+		ksft_exit_pass();
 
 	ksft_set_plan(115);
 
@@ -1660,5 +1660,5 @@ int main(int argc, char *argv[])
 	userfaultfd_tests();
 
 	close(pagemap_fd);
-	return ksft_exit_pass();
+	ksft_exit_pass();
 }
diff --git a/tools/testing/selftests/mm/soft-dirty.c b/tools/testing/selftests/mm/soft-dirty.c
index 7dbfa53d93..d9dbf87974 100644
--- a/tools/testing/selftests/mm/soft-dirty.c
+++ b/tools/testing/selftests/mm/soft-dirty.c
@@ -209,5 +209,5 @@ int main(int argc, char **argv)
 
 	close(pagemap_fd);
 
-	return ksft_exit_pass();
+	ksft_exit_pass();
 }
diff --git a/tools/testing/selftests/mm/uffd-common.h b/tools/testing/selftests/mm/uffd-common.h
index cc5629c3d2..a70ae10b5f 100644
--- a/tools/testing/selftests/mm/uffd-common.h
+++ b/tools/testing/selftests/mm/uffd-common.h
@@ -8,6 +8,7 @@
 #define __UFFD_COMMON_H__
 
 #define _GNU_SOURCE
+#define __SANE_USERSPACE_TYPES__ // Use ll64
 #include <stdio.h>
 #include <errno.h>
 #include <unistd.h>
diff --git a/tools/testing/selftests/net/amt.sh b/tools/testing/selftests/net/amt.sh
index 75528788cb..7e7ed6c558 100755
--- a/tools/testing/selftests/net/amt.sh
+++ b/tools/testing/selftests/net/amt.sh
@@ -77,6 +77,7 @@ readonly LISTENER=$(mktemp -u listener-XXXXXXXX)
 readonly GATEWAY=$(mktemp -u gateway-XXXXXXXX)
 readonly RELAY=$(mktemp -u relay-XXXXXXXX)
 readonly SOURCE=$(mktemp -u source-XXXXXXXX)
+readonly SMCROUTEDIR="$(mktemp -d)"
 ERR=4
 err=0
 
@@ -85,6 +86,11 @@ exit_cleanup()
 	for ns in "$@"; do
 		ip netns delete "${ns}" 2>/dev/null || true
 	done
+	if [ -f "$SMCROUTEDIR/amt.pid" ]; then
+		smcpid=$(< $SMCROUTEDIR/amt.pid)
+		kill $smcpid
+	fi
+	rm -rf $SMCROUTEDIR
 
 	exit $ERR
 }
@@ -167,7 +173,7 @@ setup_iptables()
 
 setup_mcast_routing()
 {
-	ip netns exec "${RELAY}" smcrouted
+	ip netns exec "${RELAY}" smcrouted -P $SMCROUTEDIR/amt.pid
 	ip netns exec "${RELAY}" smcroutectl a relay_src \
 		172.17.0.2 239.0.0.1 amtr
 	ip netns exec "${RELAY}" smcroutectl a relay_src \
@@ -210,8 +216,8 @@ check_features()
 
 test_ipv4_forward()
 {
-	RESULT4=$(ip netns exec "${LISTENER}" nc -w 1 -l -u 239.0.0.1 4000)
-	if [ "$RESULT4" == "172.17.0.2" ]; then
+	RESULT4=$(ip netns exec "${LISTENER}" timeout 15 socat - UDP4-LISTEN:4000,readbytes=128 || true)
+	if echo "$RESULT4" | grep -q "172.17.0.2"; then
 		printf "TEST: %-60s  [ OK ]\n" "IPv4 amt multicast forwarding"
 		exit 0
 	else
@@ -222,8 +228,8 @@ test_ipv4_forward()
 
 test_ipv6_forward()
 {
-	RESULT6=$(ip netns exec "${LISTENER}" nc -w 1 -l -u ff0e::5:6 6000)
-	if [ "$RESULT6" == "2001:db8:3::2" ]; then
+	RESULT6=$(ip netns exec "${LISTENER}" timeout 15 socat - UDP6-LISTEN:6000,readbytes=128 || true)
+	if echo "$RESULT6" | grep -q "2001:db8:3::2"; then
 		printf "TEST: %-60s  [ OK ]\n" "IPv6 amt multicast forwarding"
 		exit 0
 	else
@@ -236,14 +242,14 @@ send_mcast4()
 {
 	sleep 2
 	ip netns exec "${SOURCE}" bash -c \
-		'echo 172.17.0.2 | nc -w 1 -u 239.0.0.1 4000' &
+		'printf "%s %128s" 172.17.0.2 | nc -w 1 -u 239.0.0.1 4000' &
 }
 
 send_mcast6()
 {
 	sleep 2
 	ip netns exec "${SOURCE}" bash -c \
-		'echo 2001:db8:3::2 | nc -w 1 -u ff0e::5:6 6000' &
+		'printf "%s %128s" 2001:db8:3::2 | nc -w 1 -u ff0e::5:6 6000' &
 }
 
 check_features
diff --git a/tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh b/tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh
index a40c0e9bd0..eef5cbf6ee 100755
--- a/tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh
+++ b/tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh
@@ -73,25 +73,19 @@ setup_v6() {
 	# namespaces. veth0 is veth-router, veth1 is veth-host.
 	# first, set up the inteface's link to the namespace
 	# then, set the interface "up"
-	ip -6 -netns ${ROUTER_NS_V6} link add name ${ROUTER_INTF} \
-		type veth peer name ${HOST_INTF}
-
-	ip -6 -netns ${ROUTER_NS_V6} link set dev ${ROUTER_INTF} up
-	ip -6 -netns ${ROUTER_NS_V6} link set dev ${HOST_INTF} netns \
-		${HOST_NS_V6}
+	ip -n ${ROUTER_NS_V6} link add name ${ROUTER_INTF} \
+		type veth peer name ${HOST_INTF} netns ${HOST_NS_V6}
 
-	ip -6 -netns ${HOST_NS_V6} link set dev ${HOST_INTF} up
-	ip -6 -netns ${ROUTER_NS_V6} addr add \
-		${ROUTER_ADDR_V6}/${PREFIX_WIDTH_V6} dev ${ROUTER_INTF} nodad
+	# Add tc rule to filter out host na message
+	tc -n ${ROUTER_NS_V6} qdisc add dev ${ROUTER_INTF} clsact
+	tc -n ${ROUTER_NS_V6} filter add dev ${ROUTER_INTF} \
+		ingress protocol ipv6 pref 1 handle 101 \
+		flower src_ip ${HOST_ADDR_V6} ip_proto icmpv6 type 136 skip_hw action pass
 
 	HOST_CONF=net.ipv6.conf.${HOST_INTF}
 	ip netns exec ${HOST_NS_V6} sysctl -qw ${HOST_CONF}.ndisc_notify=1
 	ip netns exec ${HOST_NS_V6} sysctl -qw ${HOST_CONF}.disable_ipv6=0
-	ip -6 -netns ${HOST_NS_V6} addr add ${HOST_ADDR_V6}/${PREFIX_WIDTH_V6} \
-		dev ${HOST_INTF}
-
 	ROUTER_CONF=net.ipv6.conf.${ROUTER_INTF}
-
 	ip netns exec ${ROUTER_NS_V6} sysctl -w \
 		${ROUTER_CONF}.forwarding=1 >/dev/null 2>&1
 	ip netns exec ${ROUTER_NS_V6} sysctl -w \
@@ -99,6 +93,13 @@ setup_v6() {
 	ip netns exec ${ROUTER_NS_V6} sysctl -w \
 		${ROUTER_CONF}.accept_untracked_na=${accept_untracked_na} \
 		>/dev/null 2>&1
+
+	ip -n ${ROUTER_NS_V6} link set dev ${ROUTER_INTF} up
+	ip -n ${HOST_NS_V6} link set dev ${HOST_INTF} up
+	ip -n ${ROUTER_NS_V6} addr add ${ROUTER_ADDR_V6}/${PREFIX_WIDTH_V6} \
+		dev ${ROUTER_INTF} nodad
+	ip -n ${HOST_NS_V6} addr add ${HOST_ADDR_V6}/${PREFIX_WIDTH_V6} \
+		dev ${HOST_INTF}
 	set +e
 }
 
@@ -162,26 +163,6 @@ arp_test_gratuitous_combinations() {
 	arp_test_gratuitous 2 1
 }
 
-cleanup_tcpdump() {
-	set -e
-	[[ ! -z  ${tcpdump_stdout} ]] && rm -f ${tcpdump_stdout}
-	[[ ! -z  ${tcpdump_stderr} ]] && rm -f ${tcpdump_stderr}
-	tcpdump_stdout=
-	tcpdump_stderr=
-	set +e
-}
-
-start_tcpdump() {
-	set -e
-	tcpdump_stdout=`mktemp`
-	tcpdump_stderr=`mktemp`
-	ip netns exec ${ROUTER_NS_V6} timeout 15s \
-		tcpdump --immediate-mode -tpni ${ROUTER_INTF} -c 1 \
-		"icmp6 && icmp6[0] == 136 && src ${HOST_ADDR_V6}" \
-		> ${tcpdump_stdout} 2> /dev/null
-	set +e
-}
-
 verify_ndisc() {
 	local accept_untracked_na=$1
 	local same_subnet=$2
@@ -222,8 +203,9 @@ ndisc_test_untracked_advertisements() {
 			HOST_ADDR_V6=2001:db8:abcd:0012::3
 		fi
 	fi
-	setup_v6 $1 $2
-	start_tcpdump
+	setup_v6 $1
+	slowwait_for_counter 15 1 \
+		tc_rule_handle_stats_get "dev ${ROUTER_INTF} ingress" 101 ".packets" "-n ${ROUTER_NS_V6}"
 
 	if verify_ndisc $1 $2; then
 		printf "    TEST: %-60s  [ OK ]\n" "${test_msg[*]}"
@@ -231,7 +213,6 @@ ndisc_test_untracked_advertisements() {
 		printf "    TEST: %-60s  [FAIL]\n" "${test_msg[*]}"
 	fi
 
-	cleanup_tcpdump
 	cleanup_v6
 	set +e
 }
diff --git a/tools/testing/selftests/net/cmsg_sender.c b/tools/testing/selftests/net/cmsg_sender.c
index c79e65581d..161db24e3c 100644
--- a/tools/testing/selftests/net/cmsg_sender.c
+++ b/tools/testing/selftests/net/cmsg_sender.c
@@ -333,16 +333,17 @@ static const char *cs_ts_info2str(unsigned int info)
 	return "unknown";
 }
 
-static void
+static unsigned long
 cs_read_cmsg(int fd, struct msghdr *msg, char *cbuf, size_t cbuf_sz)
 {
 	struct sock_extended_err *see;
 	struct scm_timestamping *ts;
+	unsigned long ts_seen = 0;
 	struct cmsghdr *cmsg;
 	int i, err;
 
 	if (!opt.ts.ena)
-		return;
+		return 0;
 	msg->msg_control = cbuf;
 	msg->msg_controllen = cbuf_sz;
 
@@ -396,8 +397,11 @@ cs_read_cmsg(int fd, struct msghdr *msg, char *cbuf, size_t cbuf_sz)
 			printf(" %5s ts%d %lluus\n",
 			       cs_ts_info2str(see->ee_info),
 			       i, rel_time);
+			ts_seen |= 1 << see->ee_info;
 		}
 	}
+
+	return ts_seen;
 }
 
 static void ca_set_sockopts(int fd)
@@ -509,10 +513,16 @@ int main(int argc, char *argv[])
 	err = ERN_SUCCESS;
 
 	if (opt.ts.ena) {
-		/* Make sure all timestamps have time to loop back */
-		usleep(opt.txtime.delay);
+		unsigned long seen;
+		int i;
 
-		cs_read_cmsg(fd, &msg, cbuf, sizeof(cbuf));
+		/* Make sure all timestamps have time to loop back */
+		for (i = 0; i < 40; i++) {
+			seen = cs_read_cmsg(fd, &msg, cbuf, sizeof(cbuf));
+			if (seen & (1 << SCM_TSTAMP_SND))
+				break;
+			usleep(opt.txtime.delay / 20);
+		}
 	}
 
 err_out:
diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config
index 5e4390cac1..04de7a6ba6 100644
--- a/tools/testing/selftests/net/config
+++ b/tools/testing/selftests/net/config
@@ -30,6 +30,7 @@ CONFIG_IP_GRE=m
 CONFIG_NETFILTER=y
 CONFIG_NETFILTER_ADVANCED=y
 CONFIG_NF_CONNTRACK=m
+CONFIG_IPV6_MROUTE=y
 CONFIG_IPV6_SIT=y
 CONFIG_IP_DCCP=m
 CONFIG_NF_NAT=m
diff --git a/tools/testing/selftests/net/forwarding/bridge_igmp.sh b/tools/testing/selftests/net/forwarding/bridge_igmp.sh
index 2aa66d2a17..e6a3e04fd8 100755
--- a/tools/testing/selftests/net/forwarding/bridge_igmp.sh
+++ b/tools/testing/selftests/net/forwarding/bridge_igmp.sh
@@ -478,10 +478,10 @@ v3exc_timeout_test()
 	RET=0
 	local X=("192.0.2.20" "192.0.2.30")
 
-	# GMI should be 3 seconds
+	# GMI should be 5 seconds
 	ip link set dev br0 type bridge mcast_query_interval 100 \
 					mcast_query_response_interval 100 \
-					mcast_membership_interval 300
+					mcast_membership_interval 500
 
 	v3exclude_prepare $h1 $ALL_MAC $ALL_GROUP
 	ip link set dev br0 type bridge mcast_query_interval 500 \
@@ -489,7 +489,7 @@ v3exc_timeout_test()
 					mcast_membership_interval 1500
 
 	$MZ $h1 -c 1 -b $ALL_MAC -B $ALL_GROUP -t ip "proto=2,p=$MZPKT_ALLOW2" -q
-	sleep 3
+	sleep 5
 	bridge -j -d -s mdb show dev br0 \
 		| jq -e ".[].mdb[] | \
 			 select(.grp == \"$TEST_GROUP\" and \
diff --git a/tools/testing/selftests/net/forwarding/bridge_mld.sh b/tools/testing/selftests/net/forwarding/bridge_mld.sh
index e2b9ff773c..f84ab2e657 100755
--- a/tools/testing/selftests/net/forwarding/bridge_mld.sh
+++ b/tools/testing/selftests/net/forwarding/bridge_mld.sh
@@ -478,10 +478,10 @@ mldv2exc_timeout_test()
 	RET=0
 	local X=("2001:db8:1::20" "2001:db8:1::30")
 
-	# GMI should be 3 seconds
+	# GMI should be 5 seconds
 	ip link set dev br0 type bridge mcast_query_interval 100 \
 					mcast_query_response_interval 100 \
-					mcast_membership_interval 300
+					mcast_membership_interval 500
 
 	mldv2exclude_prepare $h1
 	ip link set dev br0 type bridge mcast_query_interval 500 \
@@ -489,7 +489,7 @@ mldv2exc_timeout_test()
 					mcast_membership_interval 1500
 
 	$MZ $h1 -c 1 $MZPKT_ALLOW2 -q
-	sleep 3
+	sleep 5
 	bridge -j -d -s mdb show dev br0 \
 		| jq -e ".[].mdb[] | \
 			 select(.grp == \"$TEST_GROUP\" and \
diff --git a/tools/testing/selftests/net/forwarding/ethtool_rmon.sh b/tools/testing/selftests/net/forwarding/ethtool_rmon.sh
index 41a34a61f7..e78776db85 100755
--- a/tools/testing/selftests/net/forwarding/ethtool_rmon.sh
+++ b/tools/testing/selftests/net/forwarding/ethtool_rmon.sh
@@ -78,7 +78,7 @@ rmon_histogram()
 
 		for if in $iface $neigh; do
 			if ! ensure_mtu $if ${bucket[0]}; then
-				log_test_skip "$if does not support the required MTU for $step"
+				log_test_xfail "$if does not support the required MTU for $step"
 				return
 			fi
 		done
@@ -93,7 +93,7 @@ rmon_histogram()
 		jq -r ".[0].rmon[\"${set}-pktsNtoM\"][]|[.low, .high]|@tsv" 2>/dev/null)
 
 	if [ $nbuckets -eq 0 ]; then
-		log_test_skip "$iface does not support $set histogram counters"
+		log_test_xfail "$iface does not support $set histogram counters"
 		return
 	fi
 }
diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index e579c2e0c4..e78f11140e 100644
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -38,32 +38,6 @@ fi
 
 source "$net_forwarding_dir/../lib.sh"
 
-# timeout in seconds
-slowwait()
-{
-	local timeout=$1; shift
-
-	local start_time="$(date -u +%s)"
-	while true
-	do
-		local out
-		out=$("$@")
-		local ret=$?
-		if ((!ret)); then
-			echo -n "$out"
-			return 0
-		fi
-
-		local current_time="$(date -u +%s)"
-		if ((current_time - start_time > timeout)); then
-			echo -n "$out"
-			return 1
-		fi
-
-		sleep 0.1
-	done
-}
-
 ##############################################################################
 # Sanity checks
 
@@ -358,14 +332,24 @@ EXIT_STATUS=0
 # Per-test return value. Clear at the beginning of each test.
 RET=0
 
+ret_set_ksft_status()
+{
+	local ksft_status=$1; shift
+	local msg=$1; shift
+
+	RET=$(ksft_status_merge $RET $ksft_status)
+	if (( $? )); then
+		retmsg=$msg
+	fi
+}
+
 check_err()
 {
 	local err=$1
 	local msg=$2
 
-	if [[ $RET -eq 0 && $err -ne 0 ]]; then
-		RET=$err
-		retmsg=$msg
+	if ((err)); then
+		ret_set_ksft_status $ksft_fail "$msg"
 	fi
 }
 
@@ -374,10 +358,7 @@ check_fail()
 	local err=$1
 	local msg=$2
 
-	if [[ $RET -eq 0 && $err -eq 0 ]]; then
-		RET=1
-		retmsg=$msg
-	fi
+	check_err $((!err)) "$msg"
 }
 
 check_err_fail()
@@ -393,6 +374,62 @@ check_err_fail()
 	fi
 }
 
+log_test_result()
+{
+	local test_name=$1; shift
+	local opt_str=$1; shift
+	local result=$1; shift
+	local retmsg=$1; shift
+
+	printf "TEST: %-60s  [%s]\n" "$test_name $opt_str" "$result"
+	if [[ $retmsg ]]; then
+		printf "\t%s\n" "$retmsg"
+	fi
+}
+
+pause_on_fail()
+{
+	if [[ $PAUSE_ON_FAIL == yes ]]; then
+		echo "Hit enter to continue, 'q' to quit"
+		read a
+		[[ $a == q ]] && exit 1
+	fi
+}
+
+handle_test_result_pass()
+{
+	local test_name=$1; shift
+	local opt_str=$1; shift
+
+	log_test_result "$test_name" "$opt_str" " OK "
+}
+
+handle_test_result_fail()
+{
+	local test_name=$1; shift
+	local opt_str=$1; shift
+
+	log_test_result "$test_name" "$opt_str" FAIL "$retmsg"
+	pause_on_fail
+}
+
+handle_test_result_xfail()
+{
+	local test_name=$1; shift
+	local opt_str=$1; shift
+
+	log_test_result "$test_name" "$opt_str" XFAIL "$retmsg"
+	pause_on_fail
+}
+
+handle_test_result_skip()
+{
+	local test_name=$1; shift
+	local opt_str=$1; shift
+
+	log_test_result "$test_name" "$opt_str" SKIP "$retmsg"
+}
+
 log_test()
 {
 	local test_name=$1
@@ -402,31 +439,28 @@ log_test()
 		opt_str="($opt_str)"
 	fi
 
-	if [[ $RET -ne 0 ]]; then
-		EXIT_STATUS=1
-		printf "TEST: %-60s  [FAIL]\n" "$test_name $opt_str"
-		if [[ ! -z "$retmsg" ]]; then
-			printf "\t%s\n" "$retmsg"
-		fi
-		if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
-			echo "Hit enter to continue, 'q' to quit"
-			read a
-			[ "$a" = "q" ] && exit 1
-		fi
-		return 1
+	if ((RET == ksft_pass)); then
+		handle_test_result_pass "$test_name" "$opt_str"
+	elif ((RET == ksft_xfail)); then
+		handle_test_result_xfail "$test_name" "$opt_str"
+	elif ((RET == ksft_skip)); then
+		handle_test_result_skip "$test_name" "$opt_str"
+	else
+		handle_test_result_fail "$test_name" "$opt_str"
 	fi
 
-	printf "TEST: %-60s  [ OK ]\n" "$test_name $opt_str"
-	return 0
+	EXIT_STATUS=$(ksft_exit_status_merge $EXIT_STATUS $RET)
+	return $RET
 }
 
 log_test_skip()
 {
-	local test_name=$1
-	local opt_str=$2
+	RET=$ksft_skip retmsg= log_test "$@"
+}
 
-	printf "TEST: %-60s  [SKIP]\n" "$test_name $opt_str"
-	return 0
+log_test_xfail()
+{
+	RET=$ksft_xfail retmsg= log_test "$@"
 }
 
 log_info()
@@ -487,33 +521,6 @@ wait_for_trap()
 	"$@" | grep -q trap
 }
 
-until_counter_is()
-{
-	local expr=$1; shift
-	local current=$("$@")
-
-	echo $((current))
-	((current $expr))
-}
-
-busywait_for_counter()
-{
-	local timeout=$1; shift
-	local delta=$1; shift
-
-	local base=$("$@")
-	busywait "$timeout" until_counter_is ">= $((base + delta))" "$@"
-}
-
-slowwait_for_counter()
-{
-	local timeout=$1; shift
-	local delta=$1; shift
-
-	local base=$("$@")
-	slowwait "$timeout" until_counter_is ">= $((base + delta))" "$@"
-}
-
 setup_wait_dev()
 {
 	local dev=$1; shift
@@ -819,29 +826,6 @@ link_stats_rx_errors_get()
 	link_stats_get $1 rx errors
 }
 
-tc_rule_stats_get()
-{
-	local dev=$1; shift
-	local pref=$1; shift
-	local dir=$1; shift
-	local selector=${1:-.packets}; shift
-
-	tc -j -s filter show dev $dev ${dir:-ingress} pref $pref \
-	    | jq ".[1].options.actions[].stats$selector"
-}
-
-tc_rule_handle_stats_get()
-{
-	local id=$1; shift
-	local handle=$1; shift
-	local selector=${1:-.packets}; shift
-	local netns=${1:-""}; shift
-
-	tc $netns -j -s filter show $id \
-	    | jq ".[] | select(.options.handle == $handle) | \
-		  .options.actions[0].stats$selector"
-}
-
 ethtool_stats_get()
 {
 	local dev=$1; shift
diff --git a/tools/testing/selftests/net/forwarding/router_mpath_nh_lib.sh b/tools/testing/selftests/net/forwarding/router_mpath_nh_lib.sh
index 7e7d62161c..b2d2c6cecc 100644
--- a/tools/testing/selftests/net/forwarding/router_mpath_nh_lib.sh
+++ b/tools/testing/selftests/net/forwarding/router_mpath_nh_lib.sh
@@ -69,7 +69,7 @@ nh_stats_test_dispatch_swhw()
 		nh_stats_do_test "HW $what" "$nh1_id" "$nh2_id" "$group_id" \
 				 nh_stats_get_hw "${mz[@]}"
 	elif [[ $kind == veth ]]; then
-		log_test_skip "HW stats not offloaded on veth topology"
+		log_test_xfail "HW stats not offloaded on veth topology"
 	fi
 }
 
diff --git a/tools/testing/selftests/net/lib.sh b/tools/testing/selftests/net/lib.sh
index f9fe182dfb..16372ca167 100644
--- a/tools/testing/selftests/net/lib.sh
+++ b/tools/testing/selftests/net/lib.sh
@@ -10,33 +10,116 @@ BUSYWAIT_TIMEOUT=$((WAIT_TIMEOUT * 1000)) # ms
 # Kselftest framework requirement - SKIP code is 4.
 ksft_skip=4
 # namespace list created by setup_ns
-NS_LIST=""
+NS_LIST=()
 
 ##############################################################################
 # Helpers
-busywait()
+
+__ksft_status_merge()
 {
-	local timeout=$1; shift
+	local a=$1; shift
+	local b=$1; shift
+	local -A weights
+	local weight=0
+
+	local i
+	for i in "$@"; do
+		weights[$i]=$((weight++))
+	done
+
+	if [[ ${weights[$a]} > ${weights[$b]} ]]; then
+		echo "$a"
+		return 0
+	else
+		echo "$b"
+		return 1
+	fi
+}
+
+ksft_status_merge()
+{
+	local a=$1; shift
+	local b=$1; shift
+
+	__ksft_status_merge "$a" "$b" \
+		$ksft_pass $ksft_xfail $ksft_skip $ksft_fail
+}
+
+ksft_exit_status_merge()
+{
+	local a=$1; shift
+	local b=$1; shift
+
+	__ksft_status_merge "$a" "$b" \
+		$ksft_xfail $ksft_pass $ksft_skip $ksft_fail
+}
+
+loopy_wait()
+{
+	local sleep_cmd=$1; shift
+	local timeout_ms=$1; shift
 
 	local start_time="$(date -u +%s%3N)"
 	while true
 	do
 		local out
-		out=$("$@")
-		local ret=$?
-		if ((!ret)); then
+		if out=$("$@"); then
 			echo -n "$out"
 			return 0
 		fi
 
 		local current_time="$(date -u +%s%3N)"
-		if ((current_time - start_time > timeout)); then
+		if ((current_time - start_time > timeout_ms)); then
 			echo -n "$out"
 			return 1
 		fi
+
+		$sleep_cmd
 	done
 }
 
+busywait()
+{
+	local timeout_ms=$1; shift
+
+	loopy_wait : "$timeout_ms" "$@"
+}
+
+# timeout in seconds
+slowwait()
+{
+	local timeout_sec=$1; shift
+
+	loopy_wait "sleep 0.1" "$((timeout_sec * 1000))" "$@"
+}
+
+until_counter_is()
+{
+	local expr=$1; shift
+	local current=$("$@")
+
+	echo $((current))
+	((current $expr))
+}
+
+busywait_for_counter()
+{
+	local timeout=$1; shift
+	local delta=$1; shift
+
+	local base=$("$@")
+	busywait "$timeout" until_counter_is ">= $((base + delta))" "$@"
+}
+
+slowwait_for_counter()
+{
+	local timeout=$1; shift
+	local delta=$1; shift
+
+	local base=$("$@")
+	slowwait "$timeout" until_counter_is ">= $((base + delta))" "$@"
+}
+
 cleanup_ns()
 {
 	local ns=""
@@ -50,6 +133,7 @@ cleanup_ns()
 	fi
 
 	for ns in "$@"; do
+		[ -z "${ns}" ] && continue
 		ip netns delete "${ns}" &> /dev/null
 		if ! busywait $BUSYWAIT_TIMEOUT ip netns list \| grep -vq "^$ns$" &> /dev/null; then
 			echo "Warn: Failed to remove namespace $ns"
@@ -63,7 +147,7 @@ cleanup_ns()
 
 cleanup_all_ns()
 {
-	cleanup_ns $NS_LIST
+	cleanup_ns "${NS_LIST[@]}"
 }
 
 # setup netns with given names as prefix. e.g
@@ -72,25 +156,50 @@ setup_ns()
 {
 	local ns=""
 	local ns_name=""
-	local ns_list=""
+	local ns_list=()
+	local ns_exist=
 	for ns_name in "$@"; do
 		# Some test may setup/remove same netns multi times
 		if unset ${ns_name} 2> /dev/null; then
 			ns="${ns_name,,}-$(mktemp -u XXXXXX)"
 			eval readonly ${ns_name}="$ns"
+			ns_exist=false
 		else
 			eval ns='$'${ns_name}
 			cleanup_ns "$ns"
-
+			ns_exist=true
 		fi
 
 		if ! ip netns add "$ns"; then
 			echo "Failed to create namespace $ns_name"
-			cleanup_ns "$ns_list"
+			cleanup_ns "${ns_list[@]}"
 			return $ksft_skip
 		fi
 		ip -n "$ns" link set lo up
-		ns_list="$ns_list $ns"
+		! $ns_exist && ns_list+=("$ns")
 	done
-	NS_LIST="$NS_LIST $ns_list"
+	NS_LIST+=("${ns_list[@]}")
+}
+
+tc_rule_stats_get()
+{
+	local dev=$1; shift
+	local pref=$1; shift
+	local dir=$1; shift
+	local selector=${1:-.packets}; shift
+
+	tc -j -s filter show dev $dev ${dir:-ingress} pref $pref \
+	    | jq ".[1].options.actions[].stats$selector"
+}
+
+tc_rule_handle_stats_get()
+{
+	local id=$1; shift
+	local handle=$1; shift
+	local selector=${1:-.packets}; shift
+	local netns=${1:-""}; shift
+
+	tc $netns -j -s filter show $id \
+	    | jq ".[] | select(.options.handle == $handle) | \
+		  .options.actions[0].stats$selector"
 }
diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index e4403236f6..2290125f6d 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -125,8 +125,8 @@ init_shapers()
 {
 	local i
 	for i in $(seq 1 4); do
-		tc -n $ns1 qdisc add dev ns1eth$i root netem rate 20mbit delay 1
-		tc -n $ns2 qdisc add dev ns2eth$i root netem rate 20mbit delay 1
+		tc -n $ns1 qdisc add dev ns1eth$i root netem rate 20mbit delay 1ms
+		tc -n $ns2 qdisc add dev ns2eth$i root netem rate 20mbit delay 1ms
 	done
 }
 
@@ -262,6 +262,8 @@ reset()
 
 	TEST_NAME="${1}"
 
+	MPTCP_LIB_SUBTEST_FLAKY=0 # reset if modified
+
 	if skip_test; then
 		MPTCP_LIB_TEST_COUNTER=$((MPTCP_LIB_TEST_COUNTER+1))
 		last_test_ignored=1
@@ -449,7 +451,9 @@ reset_with_tcp_filter()
 # $1: err msg
 fail_test()
 {
-	ret=${KSFT_FAIL}
+	if ! mptcp_lib_subtest_is_flaky; then
+		ret=${KSFT_FAIL}
+	fi
 
 	if [ ${#} -gt 0 ]; then
 		print_fail "${@}"
@@ -2354,9 +2358,10 @@ remove_tests()
 	if reset "remove invalid addresses"; then
 		pm_nl_set_limits $ns1 3 3
 		pm_nl_add_endpoint $ns1 10.0.12.1 flags signal
+		# broadcast IP: no packet for this address will be received on ns1
+		pm_nl_add_endpoint $ns1 224.0.0.1 flags signal
 		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
-		pm_nl_add_endpoint $ns1 10.0.14.1 flags signal
-		pm_nl_set_limits $ns2 3 3
+		pm_nl_set_limits $ns2 2 2
 		addr_nr_ns1=-3 speed=10 \
 			run_tests $ns1 $ns2 10.0.1.1
 		chk_join_nr 1 1 1
@@ -3178,6 +3183,7 @@ fullmesh_tests()
 fastclose_tests()
 {
 	if reset_check_counter "fastclose test" "MPTcpExtMPFastcloseTx"; then
+		MPTCP_LIB_SUBTEST_FLAKY=1
 		test_linkfail=1024 fastclose=client \
 			run_tests $ns1 $ns2 10.0.1.1
 		chk_join_nr 0 0 0
@@ -3186,6 +3192,7 @@ fastclose_tests()
 	fi
 
 	if reset_check_counter "fastclose server test" "MPTcpExtMPFastcloseRx"; then
+		MPTCP_LIB_SUBTEST_FLAKY=1
 		test_linkfail=1024 fastclose=server \
 			run_tests $ns1 $ns2 10.0.1.1
 		chk_join_nr 0 0 0 0 0 0 1
@@ -3204,6 +3211,7 @@ fail_tests()
 {
 	# single subflow
 	if reset_with_fail "Infinite map" 1; then
+		MPTCP_LIB_SUBTEST_FLAKY=1
 		test_linkfail=128 \
 			run_tests $ns1 $ns2 10.0.1.1
 		chk_join_nr 0 0 0 +1 +0 1 0 1 "$(pedit_action_pkts)"
@@ -3212,7 +3220,8 @@ fail_tests()
 
 	# multiple subflows
 	if reset_with_fail "MP_FAIL MP_RST" 2; then
-		tc -n $ns2 qdisc add dev ns2eth1 root netem rate 1mbit delay 5
+		MPTCP_LIB_SUBTEST_FLAKY=1
+		tc -n $ns2 qdisc add dev ns2eth1 root netem rate 1mbit delay 5ms
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 10.0.2.2 dev ns2eth2 flags subflow
diff --git a/tools/testing/selftests/net/mptcp/simult_flows.sh b/tools/testing/selftests/net/mptcp/simult_flows.sh
index 1b23662203..7322e1e4e5 100755
--- a/tools/testing/selftests/net/mptcp/simult_flows.sh
+++ b/tools/testing/selftests/net/mptcp/simult_flows.sh
@@ -216,8 +216,8 @@ run_test()
 	shift 4
 	local msg=$*
 
-	[ $delay1 -gt 0 ] && delay1="delay $delay1" || delay1=""
-	[ $delay2 -gt 0 ] && delay2="delay $delay2" || delay2=""
+	[ $delay1 -gt 0 ] && delay1="delay ${delay1}ms" || delay1=""
+	[ $delay2 -gt 0 ] && delay2="delay ${delay2}ms" || delay2=""
 
 	for dev in ns1eth1 ns1eth2; do
 		tc -n $ns1 qdisc del dev $dev root >/dev/null 2>&1
@@ -243,7 +243,7 @@ run_test()
 	do_transfer $small $large $time
 	lret=$?
 	mptcp_lib_result_code "${lret}" "${msg}"
-	if [ $lret -ne 0 ]; then
+	if [ $lret -ne 0 ] && ! mptcp_lib_subtest_is_flaky; then
 		ret=$lret
 		[ $bail -eq 0 ] || exit $ret
 	fi
@@ -253,7 +253,7 @@ run_test()
 	do_transfer $large $small $time
 	lret=$?
 	mptcp_lib_result_code "${lret}" "${msg}"
-	if [ $lret -ne 0 ]; then
+	if [ $lret -ne 0 ] && ! mptcp_lib_subtest_is_flaky; then
 		ret=$lret
 		[ $bail -eq 0 ] || exit $ret
 	fi
@@ -286,7 +286,7 @@ run_test 10 10 0 0 "balanced bwidth"
 run_test 10 10 1 25 "balanced bwidth with unbalanced delay"
 
 # we still need some additional infrastructure to pass the following test-cases
-run_test 10 3 0 0 "unbalanced bwidth"
+MPTCP_LIB_SUBTEST_FLAKY=1 run_test 10 3 0 0 "unbalanced bwidth"
 run_test 10 3 1 25 "unbalanced bwidth with unbalanced delay"
 run_test 10 3 25 1 "unbalanced bwidth with opposed, unbalanced delay"
 
diff --git a/tools/testing/selftests/net/mptcp/userspace_pm.sh b/tools/testing/selftests/net/mptcp/userspace_pm.sh
index 9e2981f2d7..9cb0597826 100755
--- a/tools/testing/selftests/net/mptcp/userspace_pm.sh
+++ b/tools/testing/selftests/net/mptcp/userspace_pm.sh
@@ -160,10 +160,12 @@ make_connection()
 	local is_v6=$1
 	local app_port=$app4_port
 	local connect_addr="10.0.1.1"
+	local client_addr="10.0.1.2"
 	local listen_addr="0.0.0.0"
 	if [ "$is_v6" = "v6" ]
 	then
 		connect_addr="dead:beef:1::1"
+		client_addr="dead:beef:1::2"
 		listen_addr="::"
 		app_port=$app6_port
 	else
@@ -206,6 +208,7 @@ make_connection()
 		   [ "$server_serverside" = 1 ]
 	then
 		test_pass
+		print_title "Connection info: ${client_addr}:${client_port} -> ${connect_addr}:${app_port}"
 	else
 		test_fail "Expected tokens (c:${client_token} - s:${server_token}) and server (c:${client_serverside} - s:${server_serverside})"
 		mptcp_lib_result_print_all_tap
@@ -297,7 +300,7 @@ test_announce()
 	ip netns exec "$ns2"\
 	   ./pm_nl_ctl ann 10.0.2.2 token "$client4_token" id $client_addr_id dev\
 	   ns2eth1
-	print_test "ADD_ADDR id:${client_addr_id} 10.0.2.2 (ns2) => ns1, reuse port"
+	print_test "ADD_ADDR id:client 10.0.2.2 (ns2) => ns1, reuse port"
 	sleep 0.5
 	verify_announce_event $server_evts $ANNOUNCED $server4_token "10.0.2.2" $client_addr_id \
 			      "$client4_port"
@@ -306,7 +309,7 @@ test_announce()
 	:>"$server_evts"
 	ip netns exec "$ns2" ./pm_nl_ctl ann\
 	   dead:beef:2::2 token "$client6_token" id $client_addr_id dev ns2eth1
-	print_test "ADD_ADDR6 id:${client_addr_id} dead:beef:2::2 (ns2) => ns1, reuse port"
+	print_test "ADD_ADDR6 id:client dead:beef:2::2 (ns2) => ns1, reuse port"
 	sleep 0.5
 	verify_announce_event "$server_evts" "$ANNOUNCED" "$server6_token" "dead:beef:2::2"\
 			      "$client_addr_id" "$client6_port" "v6"
@@ -316,7 +319,7 @@ test_announce()
 	client_addr_id=$((client_addr_id+1))
 	ip netns exec "$ns2" ./pm_nl_ctl ann 10.0.2.2 token "$client4_token" id\
 	   $client_addr_id dev ns2eth1 port $new4_port
-	print_test "ADD_ADDR id:${client_addr_id} 10.0.2.2 (ns2) => ns1, new port"
+	print_test "ADD_ADDR id:client+1 10.0.2.2 (ns2) => ns1, new port"
 	sleep 0.5
 	verify_announce_event "$server_evts" "$ANNOUNCED" "$server4_token" "10.0.2.2"\
 			      "$client_addr_id" "$new4_port"
@@ -327,7 +330,7 @@ test_announce()
 	# ADD_ADDR from the server to client machine reusing the subflow port
 	ip netns exec "$ns1" ./pm_nl_ctl ann 10.0.2.1 token "$server4_token" id\
 	   $server_addr_id dev ns1eth2
-	print_test "ADD_ADDR id:${server_addr_id} 10.0.2.1 (ns1) => ns2, reuse port"
+	print_test "ADD_ADDR id:server 10.0.2.1 (ns1) => ns2, reuse port"
 	sleep 0.5
 	verify_announce_event "$client_evts" "$ANNOUNCED" "$client4_token" "10.0.2.1"\
 			      "$server_addr_id" "$app4_port"
@@ -336,7 +339,7 @@ test_announce()
 	:>"$client_evts"
 	ip netns exec "$ns1" ./pm_nl_ctl ann dead:beef:2::1 token "$server6_token" id\
 	   $server_addr_id dev ns1eth2
-	print_test "ADD_ADDR6 id:${server_addr_id} dead:beef:2::1 (ns1) => ns2, reuse port"
+	print_test "ADD_ADDR6 id:server dead:beef:2::1 (ns1) => ns2, reuse port"
 	sleep 0.5
 	verify_announce_event "$client_evts" "$ANNOUNCED" "$client6_token" "dead:beef:2::1"\
 			      "$server_addr_id" "$app6_port" "v6"
@@ -346,7 +349,7 @@ test_announce()
 	server_addr_id=$((server_addr_id+1))
 	ip netns exec "$ns1" ./pm_nl_ctl ann 10.0.2.1 token "$server4_token" id\
 	   $server_addr_id dev ns1eth2 port $new4_port
-	print_test "ADD_ADDR id:${server_addr_id} 10.0.2.1 (ns1) => ns2, new port"
+	print_test "ADD_ADDR id:server+1 10.0.2.1 (ns1) => ns2, new port"
 	sleep 0.5
 	verify_announce_event "$client_evts" "$ANNOUNCED" "$client4_token" "10.0.2.1"\
 			      "$server_addr_id" "$new4_port"
@@ -380,7 +383,7 @@ test_remove()
 	local invalid_token=$(( client4_token - 1 ))
 	ip netns exec "$ns2" ./pm_nl_ctl rem token $invalid_token id\
 	   $client_addr_id > /dev/null 2>&1
-	print_test "RM_ADDR id:${client_addr_id} ns2 => ns1, invalid token"
+	print_test "RM_ADDR id:client ns2 => ns1, invalid token"
 	local type
 	type=$(mptcp_lib_evts_get_info type "$server_evts")
 	if [ "$type" = "" ]
@@ -394,7 +397,7 @@ test_remove()
 	local invalid_id=$(( client_addr_id + 1 ))
 	ip netns exec "$ns2" ./pm_nl_ctl rem token "$client4_token" id\
 	   $invalid_id > /dev/null 2>&1
-	print_test "RM_ADDR id:${invalid_id} ns2 => ns1, invalid id"
+	print_test "RM_ADDR id:client+1 ns2 => ns1, invalid id"
 	type=$(mptcp_lib_evts_get_info type "$server_evts")
 	if [ "$type" = "" ]
 	then
@@ -407,7 +410,7 @@ test_remove()
 	:>"$server_evts"
 	ip netns exec "$ns2" ./pm_nl_ctl rem token "$client4_token" id\
 	   $client_addr_id
-	print_test "RM_ADDR id:${client_addr_id} ns2 => ns1"
+	print_test "RM_ADDR id:client ns2 => ns1"
 	sleep 0.5
 	verify_remove_event "$server_evts" "$REMOVED" "$server4_token" "$client_addr_id"
 
@@ -416,7 +419,7 @@ test_remove()
 	client_addr_id=$(( client_addr_id - 1 ))
 	ip netns exec "$ns2" ./pm_nl_ctl rem token "$client4_token" id\
 	   $client_addr_id
-	print_test "RM_ADDR id:${client_addr_id} ns2 => ns1"
+	print_test "RM_ADDR id:client-1 ns2 => ns1"
 	sleep 0.5
 	verify_remove_event "$server_evts" "$REMOVED" "$server4_token" "$client_addr_id"
 
@@ -424,7 +427,7 @@ test_remove()
 	:>"$server_evts"
 	ip netns exec "$ns2" ./pm_nl_ctl rem token "$client6_token" id\
 	   $client_addr_id
-	print_test "RM_ADDR6 id:${client_addr_id} ns2 => ns1"
+	print_test "RM_ADDR6 id:client-1 ns2 => ns1"
 	sleep 0.5
 	verify_remove_event "$server_evts" "$REMOVED" "$server6_token" "$client_addr_id"
 
@@ -434,7 +437,7 @@ test_remove()
 	# RM_ADDR from the server to client machine
 	ip netns exec "$ns1" ./pm_nl_ctl rem token "$server4_token" id\
 	   $server_addr_id
-	print_test "RM_ADDR id:${server_addr_id} ns1 => ns2"
+	print_test "RM_ADDR id:server ns1 => ns2"
 	sleep 0.5
 	verify_remove_event "$client_evts" "$REMOVED" "$client4_token" "$server_addr_id"
 
@@ -443,7 +446,7 @@ test_remove()
 	server_addr_id=$(( server_addr_id - 1 ))
 	ip netns exec "$ns1" ./pm_nl_ctl rem token "$server4_token" id\
 	   $server_addr_id
-	print_test "RM_ADDR id:${server_addr_id} ns1 => ns2"
+	print_test "RM_ADDR id:server-1 ns1 => ns2"
 	sleep 0.5
 	verify_remove_event "$client_evts" "$REMOVED" "$client4_token" "$server_addr_id"
 
@@ -451,7 +454,7 @@ test_remove()
 	:>"$client_evts"
 	ip netns exec "$ns1" ./pm_nl_ctl rem token "$server6_token" id\
 	   $server_addr_id
-	print_test "RM_ADDR6 id:${server_addr_id} ns1 => ns2"
+	print_test "RM_ADDR6 id:server-1 ns1 => ns2"
 	sleep 0.5
 	verify_remove_event "$client_evts" "$REMOVED" "$client6_token" "$server_addr_id"
 }
@@ -479,8 +482,14 @@ verify_subflow_events()
 	local locid
 	local remid
 	local info
+	local e_dport_txt
 
-	info="${e_saddr} (${e_from}) => ${e_daddr}:${e_dport} (${e_to})"
+	# only display the fixed ports
+	if [ "${e_dport}" -ge "${app4_port}" ] && [ "${e_dport}" -le "${app6_port}" ]; then
+		e_dport_txt=":${e_dport}"
+	fi
+
+	info="${e_saddr} (${e_from}) => ${e_daddr}${e_dport_txt} (${e_to})"
 
 	if [ "$e_type" = "$SUB_ESTABLISHED" ]
 	then
@@ -766,7 +775,7 @@ test_subflows_v4_v6_mix()
 	:>"$client_evts"
 	ip netns exec "$ns1" ./pm_nl_ctl ann 10.0.2.1 token "$server6_token" id\
 	   $server_addr_id dev ns1eth2
-	print_test "ADD_ADDR4 id:${server_addr_id} 10.0.2.1 (ns1) => ns2, reuse port"
+	print_test "ADD_ADDR4 id:server 10.0.2.1 (ns1) => ns2, reuse port"
 	sleep 0.5
 	verify_announce_event "$client_evts" "$ANNOUNCED" "$client6_token" "10.0.2.1"\
 			      "$server_addr_id" "$app6_port"
@@ -861,7 +870,7 @@ test_listener()
 	local listener_pid=$!
 
 	sleep 0.5
-	print_test "CREATE_LISTENER 10.0.2.2:$client4_port"
+	print_test "CREATE_LISTENER 10.0.2.2 (client port)"
 	verify_listener_events $client_evts $LISTENER_CREATED $AF_INET 10.0.2.2 $client4_port
 
 	# ADD_ADDR from client to server machine reusing the subflow port
@@ -878,13 +887,14 @@ test_listener()
 	mptcp_lib_kill_wait $listener_pid
 
 	sleep 0.5
-	print_test "CLOSE_LISTENER 10.0.2.2:$client4_port"
+	print_test "CLOSE_LISTENER 10.0.2.2 (client port)"
 	verify_listener_events $client_evts $LISTENER_CLOSED $AF_INET 10.0.2.2 $client4_port
 }
 
 print_title "Make connections"
 make_connection
 make_connection "v6"
+print_title "Will be using address IDs ${client_addr_id} (client) and ${server_addr_id} (server)"
 
 test_announce
 test_remove
diff --git a/tools/testing/selftests/net/openvswitch/openvswitch.sh b/tools/testing/selftests/net/openvswitch/openvswitch.sh
index 5cae535438..15bca07087 100755
--- a/tools/testing/selftests/net/openvswitch/openvswitch.sh
+++ b/tools/testing/selftests/net/openvswitch/openvswitch.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 #
 # OVS kernel module self tests
diff --git a/tools/testing/selftests/power_supply/test_power_supply_properties.sh b/tools/testing/selftests/power_supply/test_power_supply_properties.sh
index df272dfe1d..a66b1313ed 100755
--- a/tools/testing/selftests/power_supply/test_power_supply_properties.sh
+++ b/tools/testing/selftests/power_supply/test_power_supply_properties.sh
@@ -23,7 +23,7 @@ count_tests() {
 	total_tests=0
 
 	for i in $SUPPLIES; do
-		total_tests=$(("$total_tests" + "$NUM_TESTS"))
+		total_tests=$((total_tests + NUM_TESTS))
 	done
 
 	echo "$total_tests"
diff --git a/tools/testing/selftests/powerpc/dexcr/Makefile b/tools/testing/selftests/powerpc/dexcr/Makefile
index 76210f2bce..829ad075b4 100644
--- a/tools/testing/selftests/powerpc/dexcr/Makefile
+++ b/tools/testing/selftests/powerpc/dexcr/Makefile
@@ -3,7 +3,7 @@ TEST_GEN_FILES := lsdexcr
 
 include ../../lib.mk
 
-$(OUTPUT)/hashchk_test: CFLAGS += -fno-pie $(call cc-option,-mno-rop-protect)
+$(OUTPUT)/hashchk_test: CFLAGS += -fno-pie -no-pie $(call cc-option,-mno-rop-protect)
 
 $(TEST_GEN_PROGS): ../harness.c ../utils.c ./dexcr.c
 $(TEST_GEN_FILES): ../utils.c ./dexcr.c
diff --git a/tools/testing/selftests/resctrl/Makefile b/tools/testing/selftests/resctrl/Makefile
index 2deac2031d..021863f860 100644
--- a/tools/testing/selftests/resctrl/Makefile
+++ b/tools/testing/selftests/resctrl/Makefile
@@ -5,6 +5,8 @@ CFLAGS += $(KHDR_INCLUDES)
 
 TEST_GEN_PROGS := resctrl_tests
 
+LOCAL_HDRS += $(wildcard *.h)
+
 include ../lib.mk
 
-$(OUTPUT)/resctrl_tests: $(wildcard *.[ch])
+$(OUTPUT)/resctrl_tests: $(wildcard *.c)
diff --git a/tools/testing/selftests/riscv/hwprobe/.gitignore b/tools/testing/selftests/riscv/hwprobe/.gitignore
index 8113dc3bdd..6e384e80ea 100644
--- a/tools/testing/selftests/riscv/hwprobe/.gitignore
+++ b/tools/testing/selftests/riscv/hwprobe/.gitignore
@@ -1 +1,3 @@
 hwprobe
+cbo
+which-cpus
diff --git a/tools/testing/selftests/tc-testing/tc-tests/qdiscs/taprio.json b/tools/testing/selftests/tc-testing/tc-tests/qdiscs/taprio.json
index 12da0a939e..557fb074ac 100644
--- a/tools/testing/selftests/tc-testing/tc-tests/qdiscs/taprio.json
+++ b/tools/testing/selftests/tc-testing/tc-tests/qdiscs/taprio.json
@@ -132,6 +132,50 @@
             "echo \"1\" > /sys/bus/netdevsim/del_device"
         ]
     },
+    {
+        "id": "6f62",
+        "name": "Add taprio Qdisc with too short interval",
+        "category": [
+            "qdisc",
+            "taprio"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "echo \"1 1 8\" > /sys/bus/netdevsim/new_device"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $ETH root handle 1: taprio num_tc 2 queues 1@0 1@1 sched-entry S 01 300 sched-entry S 02 1700 clockid CLOCK_TAI",
+        "expExitCode": "2",
+        "verifyCmd": "$TC qdisc show dev $ETH",
+        "matchPattern": "qdisc taprio 1: root refcnt",
+        "matchCount": "0",
+        "teardown": [
+            "echo \"1\" > /sys/bus/netdevsim/del_device"
+        ]
+    },
+    {
+        "id": "831f",
+        "name": "Add taprio Qdisc with too short cycle-time",
+        "category": [
+            "qdisc",
+            "taprio"
+        ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+        "setup": [
+            "echo \"1 1 8\" > /sys/bus/netdevsim/new_device"
+        ],
+        "cmdUnderTest": "$TC qdisc add dev $ETH root handle 1: taprio num_tc 2 queues 1@0 1@1 sched-entry S 01 200000 sched-entry S 02 200000 cycle-time 100 clockid CLOCK_TAI",
+        "expExitCode": "2",
+        "verifyCmd": "$TC qdisc show dev $ETH",
+        "matchPattern": "qdisc taprio 1: root refcnt",
+        "matchCount": "0",
+        "teardown": [
+            "echo \"1\" > /sys/bus/netdevsim/del_device"
+        ]
+    },
     {
         "id": "3e1e",
         "name": "Add taprio Qdisc with an invalid cycle-time",
-- 
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