Merge remote-tracking branch 'torvalds/master' into perf/core

To pick up fixes from perf/urgent that recently got merged.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

36 files changed, 265 insertions, 73 deletions

diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h
index 1b65042ab1db..82858b697c05 100644
--- a/tools/include/uapi/linux/perf_event.h
+++ b/tools/include/uapi/linux/perf_event.h
@@ -465,6 +465,8 @@ struct perf_event_attr {
 	/*
 	 * User provided data if sigtrap=1, passed back to user via
 	 * siginfo_t::si_perf_data, e.g. to permit user to identify the event.
+	 * Note, siginfo_t::si_perf_data is long-sized, and sig_data will be
+	 * truncated accordingly on 32 bit architectures.
 	 */
 	__u64	sig_data;
 };
diff --git a/tools/lib/perf/include/internal/cpumap.h b/tools/lib/perf/include/internal/cpumap.h
index 581f9ffb4237..1973a18c096b 100644
--- a/tools/lib/perf/include/internal/cpumap.h
+++ b/tools/lib/perf/include/internal/cpumap.h
@@ -3,11 +3,7 @@
 #define __LIBPERF_INTERNAL_CPUMAP_H
 
 #include <linux/refcount.h>
-
-/** A wrapper around a CPU to avoid confusion with the perf_cpu_map's map's indices. */
-struct perf_cpu {
-	int cpu;
-};
+#include <perf/cpumap.h>
 
 /**
  * A sized, reference counted, sorted array of integers representing CPU
diff --git a/tools/lib/perf/include/perf/cpumap.h b/tools/lib/perf/include/perf/cpumap.h
index 15b8faafd615..4a2edbdb5e2b 100644
--- a/tools/lib/perf/include/perf/cpumap.h
+++ b/tools/lib/perf/include/perf/cpumap.h
@@ -7,6 +7,11 @@
 #include <stdio.h>
 #include <stdbool.h>
 
+/** A wrapper around a CPU to avoid confusion with the perf_cpu_map's map's indices. */
+struct perf_cpu {
+	int cpu;
+};
+
 LIBPERF_API struct perf_cpu_map *perf_cpu_map__dummy_new(void);
 LIBPERF_API struct perf_cpu_map *perf_cpu_map__default_new(void);
 LIBPERF_API struct perf_cpu_map *perf_cpu_map__new(const char *cpu_list);
diff --git a/tools/lib/perf/libperf.map b/tools/lib/perf/libperf.map
index 93696affda2e..6fa0d651576b 100644
--- a/tools/lib/perf/libperf.map
+++ b/tools/lib/perf/libperf.map
@@ -2,6 +2,7 @@ LIBPERF_0.0.1 {
 	global:
 		libperf_init;
 		perf_cpu_map__dummy_new;
+		perf_cpu_map__default_new;
 		perf_cpu_map__get;
 		perf_cpu_map__put;
 		perf_cpu_map__new;
diff --git a/tools/lib/perf/tests/test-cpumap.c b/tools/lib/perf/tests/test-cpumap.c
index d39378eaf897..87b0510a556f 100644
--- a/tools/lib/perf/tests/test-cpumap.c
+++ b/tools/lib/perf/tests/test-cpumap.c
@@ -14,6 +14,8 @@ static int libperf_print(enum libperf_print_level level,
 int test_cpumap(int argc, char **argv)
 {
 	struct perf_cpu_map *cpus;
+	struct perf_cpu cpu;
+	int idx;
 
 	__T_START;
 
@@ -27,6 +29,15 @@ int test_cpumap(int argc, char **argv)
 	perf_cpu_map__put(cpus);
 	perf_cpu_map__put(cpus);
 
+	cpus = perf_cpu_map__default_new();
+	if (!cpus)
+		return -1;
+
+	perf_cpu_map__for_each_cpu(cpu, idx, cpus)
+		__T("wrong cpu number", cpu.cpu != -1);
+
+	perf_cpu_map__put(cpus);
+
 	__T_END;
 	return tests_failed == 0 ? 0 : -1;
 }
diff --git a/tools/lib/perf/tests/test-evlist.c b/tools/lib/perf/tests/test-evlist.c
index b3479dfa9a1c..fa854c83b7e7 100644
--- a/tools/lib/perf/tests/test-evlist.c
+++ b/tools/lib/perf/tests/test-evlist.c
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 #define _GNU_SOURCE // needed for sched.h to get sched_[gs]etaffinity and CPU_(ZERO,SET)
+#include <inttypes.h>
 #include <sched.h>
 #include <stdio.h>
 #include <stdarg.h>
@@ -526,12 +527,12 @@ static int test_stat_multiplexing(void)
 
 	min = counts[0].val;
 	for (i = 0; i < EVENT_NUM; i++) {
-		__T_VERBOSE("Event %2d -- Raw count = %lu, run = %lu, enable = %lu\n",
+		__T_VERBOSE("Event %2d -- Raw count = %" PRIu64 ", run = %" PRIu64 ", enable = %" PRIu64 "\n",
 			    i, counts[i].val, counts[i].run, counts[i].ena);
 
 		perf_counts_values__scale(&counts[i], true, &scaled);
 		if (scaled == 1) {
-			__T_VERBOSE("\t Scaled count = %lu (%.2lf%%, %lu/%lu)\n",
+			__T_VERBOSE("\t Scaled count = %" PRIu64 " (%.2lf%%, %" PRIu64 "/%" PRIu64 ")\n",
 				    counts[i].val,
 				    (double)counts[i].run / (double)counts[i].ena * 100.0,
 				    counts[i].run, counts[i].ena);
diff --git a/tools/lib/subcmd/subcmd-util.h b/tools/lib/subcmd/subcmd-util.h
index 794a375dad36..b2aec04fce8f 100644
--- a/tools/lib/subcmd/subcmd-util.h
+++ b/tools/lib/subcmd/subcmd-util.h
@@ -50,15 +50,8 @@ static NORETURN inline void die(const char *err, ...)
 static inline void *xrealloc(void *ptr, size_t size)
 {
 	void *ret = realloc(ptr, size);
-	if (!ret && !size)
-		ret = realloc(ptr, 1);
-	if (!ret) {
-		ret = realloc(ptr, size);
-		if (!ret && !size)
-			ret = realloc(ptr, 1);
-		if (!ret)
-			die("Out of memory, realloc failed");
-	}
+	if (!ret)
+		die("Out of memory, realloc failed");
 	return ret;
 }
 
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index d8deecc836b3..897fc504918b 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -1536,13 +1536,20 @@ static size_t trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp)
 	return fprintf(fp, "         ? ");
 }
 
+static pid_t workload_pid = -1;
 static bool done = false;
 static bool interrupted = false;
 
-static void sig_handler(int sig)
+static void sighandler_interrupt(int sig __maybe_unused)
 {
-	done = true;
-	interrupted = sig == SIGINT;
+	done = interrupted = true;
+}
+
+static void sighandler_chld(int sig __maybe_unused, siginfo_t *info,
+			    void *context __maybe_unused)
+{
+	if (info->si_pid == workload_pid)
+		done = true;
 }
 
 static size_t trace__fprintf_comm_tid(struct trace *trace, struct thread *thread, FILE *fp)
@@ -3938,7 +3945,6 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
 	bool draining = false;
 
 	trace->live = true;
-	signal(SIGCHLD, sig_handler);
 
 	if (!trace->raw_augmented_syscalls) {
 		if (trace->trace_syscalls && trace__add_syscall_newtp(trace))
@@ -4018,6 +4024,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
 			fprintf(trace->output, "Couldn't run the workload!\n");
 			goto out_delete_evlist;
 		}
+		workload_pid = evlist->workload.pid;
 	}
 
 	err = evlist__open(evlist);
@@ -4887,10 +4894,16 @@ int cmd_trace(int argc, const char **argv)
 	const char * const trace_subcommands[] = { "record", NULL };
 	int err = -1;
 	char bf[BUFSIZ];
+	struct sigaction sigchld_act;
 
 	signal(SIGSEGV, sighandler_dump_stack);
 	signal(SIGFPE, sighandler_dump_stack);
-	signal(SIGINT, sig_handler);
+	signal(SIGINT, sighandler_interrupt);
+
+	memset(&sigchld_act, 0, sizeof(sigchld_act));
+	sigchld_act.sa_flags = SA_SIGINFO;
+	sigchld_act.sa_sigaction = sighandler_chld;
+	sigaction(SIGCHLD, &sigchld_act, NULL);
 
 	trace.evlist = evlist__new();
 	trace.sctbl = syscalltbl__new();
diff --git a/tools/perf/tests/attr/README b/tools/perf/tests/attr/README
index a36f49fb4dbe..1116fc6bf2ac 100644
--- a/tools/perf/tests/attr/README
+++ b/tools/perf/tests/attr/README
@@ -45,8 +45,10 @@ Following tests are defined (with perf commands):
   perf record -d kill                           (test-record-data)
   perf record -F 100 kill                       (test-record-freq)
   perf record -g kill                           (test-record-graph-default)
+  perf record -g kill                           (test-record-graph-default-aarch64)
   perf record --call-graph dwarf kill		(test-record-graph-dwarf)
   perf record --call-graph fp kill              (test-record-graph-fp)
+  perf record --call-graph fp kill              (test-record-graph-fp-aarch64)
   perf record --group -e cycles,instructions kill (test-record-group)
   perf record -e '{cycles,instructions}' kill   (test-record-group1)
   perf record -e '{cycles/period=1/,instructions/period=2/}:S' kill (test-record-group2)
diff --git a/tools/perf/tests/attr/test-record-graph-default b/tools/perf/tests/attr/test-record-graph-default
index 5d8234d50845..f0a18b4ea4f5 100644
--- a/tools/perf/tests/attr/test-record-graph-default
+++ b/tools/perf/tests/attr/test-record-graph-default
@@ -2,6 +2,8 @@
 command = record
 args    = --no-bpf-event -g kill >/dev/null 2>&1
 ret     = 1
+# arm64 enables registers in the default mode (fp)
+arch    = !aarch64
 
 [event:base-record]
 sample_type=295
diff --git a/tools/perf/tests/attr/test-record-graph-default-aarch64 b/tools/perf/tests/attr/test-record-graph-default-aarch64
new file mode 100644
index 000000000000..e98d62efb6f7
--- /dev/null
+++ b/tools/perf/tests/attr/test-record-graph-default-aarch64
@@ -0,0 +1,9 @@
+[config]
+command = record
+args    = --no-bpf-event -g kill >/dev/null 2>&1
+ret     = 1
+arch    = aarch64
+
+[event:base-record]
+sample_type=4391
+sample_regs_user=1073741824
diff --git a/tools/perf/tests/attr/test-record-graph-fp b/tools/perf/tests/attr/test-record-graph-fp
index 5630521c0b0f..a6e60e839205 100644
--- a/tools/perf/tests/attr/test-record-graph-fp
+++ b/tools/perf/tests/attr/test-record-graph-fp
@@ -2,6 +2,8 @@
 command = record
 args    = --no-bpf-event --call-graph fp kill >/dev/null 2>&1
 ret     = 1
+# arm64 enables registers in fp mode
+arch    = !aarch64
 
 [event:base-record]
 sample_type=295
diff --git a/tools/perf/tests/attr/test-record-graph-fp-aarch64 b/tools/perf/tests/attr/test-record-graph-fp-aarch64
new file mode 100644
index 000000000000..cbeea9971285
--- /dev/null
+++ b/tools/perf/tests/attr/test-record-graph-fp-aarch64
@@ -0,0 +1,9 @@
+[config]
+command = record
+args    = --no-bpf-event --call-graph fp kill >/dev/null 2>&1
+ret     = 1
+arch    = aarch64
+
+[event:base-record]
+sample_type=4391
+sample_regs_user=1073741824
diff --git a/tools/perf/util/bpf-loader.c b/tools/perf/util/bpf-loader.c
index db61e09be585..efd9c703b5cc 100644
--- a/tools/perf/util/bpf-loader.c
+++ b/tools/perf/util/bpf-loader.c
@@ -1282,9 +1282,10 @@ bpf__obj_config_map(struct bpf_object *obj,
 	pr_debug("ERROR: Invalid map config option '%s'\n", map_opt);
 	err = -BPF_LOADER_ERRNO__OBJCONF_MAP_OPT;
 out:
-	free(map_name);
 	if (!err)
 		*key_scan_pos += strlen(map_opt);
+
+	free(map_name);
 	return err;
 }
 
diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index 4f672f7d008c..8b95fb3c4d7b 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -50,8 +50,6 @@ struct cs_etm_auxtrace {
 	u8 timeless_decoding;
 	u8 snapshot_mode;
 	u8 data_queued;
-	u8 sample_branches;
-	u8 sample_instructions;
 
 	int num_cpu;
 	u64 latest_kernel_timestamp;
@@ -410,8 +408,8 @@ static void cs_etm__packet_swap(struct cs_etm_auxtrace *etm,
 {
 	struct cs_etm_packet *tmp;
 
-	if (etm->sample_branches || etm->synth_opts.last_branch ||
-	    etm->sample_instructions) {
+	if (etm->synth_opts.branches || etm->synth_opts.last_branch ||
+	    etm->synth_opts.instructions) {
 		/*
 		 * Swap PACKET with PREV_PACKET: PACKET becomes PREV_PACKET for
 		 * the next incoming packet.
@@ -1365,7 +1363,6 @@ static int cs_etm__synth_events(struct cs_etm_auxtrace *etm,
 		err = cs_etm__synth_event(session, &attr, id);
 		if (err)
 			return err;
-		etm->sample_branches = true;
 		etm->branches_sample_type = attr.sample_type;
 		etm->branches_id = id;
 		id += 1;
@@ -1389,7 +1386,6 @@ static int cs_etm__synth_events(struct cs_etm_auxtrace *etm,
 		err = cs_etm__synth_event(session, &attr, id);
 		if (err)
 			return err;
-		etm->sample_instructions = true;
 		etm->instructions_sample_type = attr.sample_type;
 		etm->instructions_id = id;
 		id += 1;
@@ -1420,7 +1416,7 @@ static int cs_etm__sample(struct cs_etm_queue *etmq,
 	    tidq->prev_packet->last_instr_taken_branch)
 		cs_etm__update_last_branch_rb(etmq, tidq);
 
-	if (etm->sample_instructions &&
+	if (etm->synth_opts.instructions &&
 	    tidq->period_instructions >= etm->instructions_sample_period) {
 		/*
 		 * Emit instruction sample periodically
@@ -1503,7 +1499,7 @@ static int cs_etm__sample(struct cs_etm_queue *etmq,
 		}
 	}
 
-	if (etm->sample_branches) {
+	if (etm->synth_opts.branches) {
 		bool generate_sample = false;
 
 		/* Generate sample for tracing on packet */
@@ -1557,6 +1553,7 @@ static int cs_etm__flush(struct cs_etm_queue *etmq,
 		goto swap_packet;
 
 	if (etmq->etm->synth_opts.last_branch &&
+	    etmq->etm->synth_opts.instructions &&
 	    tidq->prev_packet->sample_type == CS_ETM_RANGE) {
 		u64 addr;
 
@@ -1582,7 +1579,7 @@ static int cs_etm__flush(struct cs_etm_queue *etmq,
 
 	}
 
-	if (etm->sample_branches &&
+	if (etm->synth_opts.branches &&
 	    tidq->prev_packet->sample_type == CS_ETM_RANGE) {
 		err = cs_etm__synth_branch_sample(etmq, tidq);
 		if (err)
@@ -1614,6 +1611,7 @@ static int cs_etm__end_block(struct cs_etm_queue *etmq,
 	 * the trace.
 	 */
 	if (etmq->etm->synth_opts.last_branch &&
+	    etmq->etm->synth_opts.instructions &&
 	    tidq->prev_packet->sample_type == CS_ETM_RANGE) {
 		u64 addr;
 
diff --git a/tools/testing/kunit/run_checks.py b/tools/testing/kunit/run_checks.py
index 4f32133ed77c..13d854afca9d 100755
--- a/tools/testing/kunit/run_checks.py
+++ b/tools/testing/kunit/run_checks.py
@@ -61,7 +61,7 @@ def main(argv: Sequence[str]) -> None:
 		elif isinstance(ex, subprocess.CalledProcessError):
 			print(f'{name}: FAILED')
 		else:
-			print('{name}: unexpected exception: {ex}')
+			print(f'{name}: unexpected exception: {ex}')
 			continue
 
 		output = ex.output
diff --git a/tools/testing/selftests/clone3/clone3.c b/tools/testing/selftests/clone3/clone3.c
index 076cf4325f78..cd4582129c7d 100644
--- a/tools/testing/selftests/clone3/clone3.c
+++ b/tools/testing/selftests/clone3/clone3.c
@@ -126,8 +126,6 @@ static void test_clone3(uint64_t flags, size_t size, int expected,
 
 int main(int argc, char *argv[])
 {
-	pid_t pid;
-
 	uid_t uid = getuid();
 
 	ksft_print_header();
diff --git a/tools/testing/selftests/ir/ir_loopback.c b/tools/testing/selftests/ir/ir_loopback.c
index 06256c96df12..f4a15cbdd5ea 100644
--- a/tools/testing/selftests/ir/ir_loopback.c
+++ b/tools/testing/selftests/ir/ir_loopback.c
@@ -29,6 +29,16 @@
 #define SYSFS_PATH_MAX 256
 #define DNAME_PATH_MAX 256
 
+/*
+ * Support ancient lirc.h which does not have these values. Can be removed
+ * once RHEL 8 is no longer a relevant testing platform.
+ */
+#if RC_PROTO_MAX < 26
+#define RC_PROTO_RCMM12 24
+#define RC_PROTO_RCMM24 25
+#define RC_PROTO_RCMM32 26
+#endif
+
 static const struct {
 	enum rc_proto proto;
 	const char *name;
diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
index 0e4926bc9a58..17c3f0749f05 100644
--- a/tools/testing/selftests/kvm/Makefile
+++ b/tools/testing/selftests/kvm/Makefile
@@ -82,7 +82,6 @@ TEST_GEN_PROGS_x86_64 += x86_64/tsc_msrs_test
 TEST_GEN_PROGS_x86_64 += x86_64/vmx_pmu_msrs_test
 TEST_GEN_PROGS_x86_64 += x86_64/xen_shinfo_test
 TEST_GEN_PROGS_x86_64 += x86_64/xen_vmcall_test
-TEST_GEN_PROGS_x86_64 += x86_64/vmx_pi_mmio_test
 TEST_GEN_PROGS_x86_64 += x86_64/sev_migrate_tests
 TEST_GEN_PROGS_x86_64 += x86_64/amx_test
 TEST_GEN_PROGS_x86_64 += access_tracking_perf_test
diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index b8bdbec0cf69..c0801df15f54 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -1159,6 +1159,7 @@ signal_address_tests()
 	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags signal
 	ip netns exec $ns2 ./pm_nl_ctl add 10.0.4.2 flags signal
 	run_tests $ns1 $ns2 10.0.1.1
+	chk_join_nr "signal addresses race test" 3 3 3
 
 	# the server will not signal the address terminating
 	# the MPC subflow
diff --git a/tools/testing/selftests/netfilter/Makefile b/tools/testing/selftests/netfilter/Makefile
index ffca314897c4..e4f845dd942b 100644
--- a/tools/testing/selftests/netfilter/Makefile
+++ b/tools/testing/selftests/netfilter/Makefile
@@ -6,7 +6,7 @@ TEST_PROGS := nft_trans_stress.sh nft_fib.sh nft_nat.sh bridge_brouter.sh \
 	nft_concat_range.sh nft_conntrack_helper.sh \
 	nft_queue.sh nft_meta.sh nf_nat_edemux.sh \
 	ipip-conntrack-mtu.sh conntrack_tcp_unreplied.sh \
-	conntrack_vrf.sh
+	conntrack_vrf.sh nft_synproxy.sh
 
 LDLIBS = -lmnl
 TEST_GEN_FILES =  nf-queue
diff --git a/tools/testing/selftests/netfilter/nft_concat_range.sh b/tools/testing/selftests/netfilter/nft_concat_range.sh
index df322e47a54f..b35010cc7f6a 100755
--- a/tools/testing/selftests/netfilter/nft_concat_range.sh
+++ b/tools/testing/selftests/netfilter/nft_concat_range.sh
@@ -1601,4 +1601,4 @@ for name in ${TESTS}; do
 	done
 done
 
-[ ${passed} -eq 0 ] && exit ${KSELFTEST_SKIP}
+[ ${passed} -eq 0 ] && exit ${KSELFTEST_SKIP} || exit 0
diff --git a/tools/testing/selftests/netfilter/nft_fib.sh b/tools/testing/selftests/netfilter/nft_fib.sh
index 6caf6ac8c285..695a1958723f 100755
--- a/tools/testing/selftests/netfilter/nft_fib.sh
+++ b/tools/testing/selftests/netfilter/nft_fib.sh
@@ -174,6 +174,7 @@ test_ping() {
 ip netns exec ${nsrouter} sysctl net.ipv6.conf.all.forwarding=1 > /dev/null
 ip netns exec ${nsrouter} sysctl net.ipv4.conf.veth0.forwarding=1 > /dev/null
 ip netns exec ${nsrouter} sysctl net.ipv4.conf.veth1.forwarding=1 > /dev/null
+ip netns exec ${nsrouter} sysctl net.ipv4.conf.veth0.rp_filter=0 > /dev/null
 
 sleep 3
 
diff --git a/tools/testing/selftests/netfilter/nft_synproxy.sh b/tools/testing/selftests/netfilter/nft_synproxy.sh
new file mode 100755
index 000000000000..b62933b680d6
--- /dev/null
+++ b/tools/testing/selftests/netfilter/nft_synproxy.sh
@@ -0,0 +1,117 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+ret=0
+
+rnd=$(mktemp -u XXXXXXXX)
+nsr="nsr-$rnd"	# synproxy machine
+ns1="ns1-$rnd"  # iperf client
+ns2="ns2-$rnd"  # iperf server
+
+checktool (){
+	if ! $1 > /dev/null 2>&1; then
+		echo "SKIP: Could not $2"
+		exit $ksft_skip
+	fi
+}
+
+checktool "nft --version" "run test without nft tool"
+checktool "ip -Version" "run test without ip tool"
+checktool "iperf3 --version" "run test without iperf3"
+checktool "ip netns add $nsr" "create net namespace"
+
+modprobe -q nf_conntrack
+
+ip netns add $ns1
+ip netns add $ns2
+
+cleanup() {
+	ip netns pids $ns1 | xargs kill 2>/dev/null
+	ip netns pids $ns2 | xargs kill 2>/dev/null
+	ip netns del $ns1
+	ip netns del $ns2
+
+	ip netns del $nsr
+}
+
+trap cleanup EXIT
+
+ip link add veth0 netns $nsr type veth peer name eth0 netns $ns1
+ip link add veth1 netns $nsr type veth peer name eth0 netns $ns2
+
+for dev in lo veth0 veth1; do
+ip -net $nsr link set $dev up
+done
+
+ip -net $nsr addr add 10.0.1.1/24 dev veth0
+ip -net $nsr addr add 10.0.2.1/24 dev veth1
+
+ip netns exec $nsr sysctl -q net.ipv4.conf.veth0.forwarding=1
+ip netns exec $nsr sysctl -q net.ipv4.conf.veth1.forwarding=1
+ip netns exec $nsr sysctl -q net.netfilter.nf_conntrack_tcp_loose=0
+
+for n in $ns1 $ns2; do
+  ip -net $n link set lo up
+  ip -net $n link set eth0 up
+done
+ip -net $ns1 addr add 10.0.1.99/24 dev eth0
+ip -net $ns2 addr add 10.0.2.99/24 dev eth0
+ip -net $ns1 route add default via 10.0.1.1
+ip -net $ns2 route add default via 10.0.2.1
+
+# test basic connectivity
+if ! ip netns exec $ns1 ping -c 1 -q 10.0.2.99 > /dev/null; then
+  echo "ERROR: $ns1 cannot reach $ns2" 1>&2
+  exit 1
+fi
+
+if ! ip netns exec $ns2 ping -c 1 -q 10.0.1.99 > /dev/null; then
+  echo "ERROR: $ns2 cannot reach $ns1" 1>&2
+  exit 1
+fi
+
+ip netns exec $ns2 iperf3 -s > /dev/null 2>&1 &
+# ip netns exec $nsr tcpdump -vvv -n -i veth1 tcp | head -n 10 &
+
+sleep 1
+
+ip netns exec $nsr nft -f - <<EOF
+table inet filter {
+   chain prerouting {
+      type filter hook prerouting priority -300; policy accept;
+      meta iif veth0 tcp flags syn counter notrack
+   }
+
+  chain forward {
+      type filter hook forward priority 0; policy accept;
+
+      ct state new,established counter accept
+
+      meta iif veth0 meta l4proto tcp ct state untracked,invalid synproxy mss 1460 sack-perm timestamp
+
+      ct state invalid counter drop
+
+      # make ns2 unreachable w.o. tcp synproxy
+      tcp flags syn counter drop
+   }
+}
+EOF
+if [ $? -ne 0 ]; then
+	echo "SKIP: Cannot add nft synproxy"
+	exit $ksft_skip
+fi
+
+ip netns exec $ns1 timeout 5 iperf3 -c 10.0.2.99 -n $((1 * 1024 * 1024)) > /dev/null
+
+if [ $? -ne 0 ]; then
+	echo "FAIL: iperf3 returned an error" 1>&2
+	ret=$?
+	ip netns exec $nsr nft list ruleset
+else
+	echo "PASS: synproxy connection successful"
+fi
+
+exit $ret
diff --git a/tools/testing/selftests/pidfd/pidfd.h b/tools/testing/selftests/pidfd/pidfd.h
index 01f8d3c0cf2c..6922d6417e1c 100644
--- a/tools/testing/selftests/pidfd/pidfd.h
+++ b/tools/testing/selftests/pidfd/pidfd.h
@@ -68,7 +68,7 @@
 #define PIDFD_SKIP 3
 #define PIDFD_XFAIL 4
 
-int wait_for_pid(pid_t pid)
+static inline int wait_for_pid(pid_t pid)
 {
 	int status, ret;
 
@@ -78,13 +78,20 @@ again:
 		if (errno == EINTR)
 			goto again;
 
+		ksft_print_msg("waitpid returned -1, errno=%d\n", errno);
 		return -1;
 	}
 
-	if (!WIFEXITED(status))
+	if (!WIFEXITED(status)) {
+		ksft_print_msg(
+		       "waitpid !WIFEXITED, WIFSIGNALED=%d, WTERMSIG=%d\n",
+		       WIFSIGNALED(status), WTERMSIG(status));
 		return -1;
+	}
 
-	return WEXITSTATUS(status);
+	ret = WEXITSTATUS(status);
+	ksft_print_msg("waitpid WEXITSTATUS=%d\n", ret);
+	return ret;
 }
 
 static inline int sys_pidfd_open(pid_t pid, unsigned int flags)
diff --git a/tools/testing/selftests/pidfd/pidfd_fdinfo_test.c b/tools/testing/selftests/pidfd/pidfd_fdinfo_test.c
index 22558524f71c..3fd8e903118f 100644
--- a/tools/testing/selftests/pidfd/pidfd_fdinfo_test.c
+++ b/tools/testing/selftests/pidfd/pidfd_fdinfo_test.c
@@ -12,6 +12,7 @@
 #include <string.h>
 #include <syscall.h>
 #include <sys/wait.h>
+#include <sys/mman.h>
 
 #include "pidfd.h"
 #include "../kselftest.h"
@@ -80,7 +81,10 @@ static inline int error_check(struct error *err, const char *test_name)
 	return err->code;
 }
 
+#define CHILD_STACK_SIZE 8192
+
 struct child {
+	char *stack;
 	pid_t pid;
 	int   fd;
 };
@@ -89,17 +93,22 @@ static struct child clone_newns(int (*fn)(void *), void *args,
 				struct error *err)
 {
 	static int flags = CLONE_PIDFD | CLONE_NEWPID | CLONE_NEWNS | SIGCHLD;
-	size_t stack_size = 1024;
-	char *stack[1024] = { 0 };
 	struct child ret;
 
 	if (!(flags & CLONE_NEWUSER) && geteuid() != 0)
 		flags |= CLONE_NEWUSER;
 
+	ret.stack = mmap(NULL, CHILD_STACK_SIZE, PROT_READ | PROT_WRITE,
+			 MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0);
+	if (ret.stack == MAP_FAILED) {
+		error_set(err, -1, "mmap of stack failed (errno %d)", errno);
+		return ret;
+	}
+
 #ifdef __ia64__
-	ret.pid = __clone2(fn, stack, stack_size, flags, args, &ret.fd);
+	ret.pid = __clone2(fn, ret.stack, CHILD_STACK_SIZE, flags, args, &ret.fd);
 #else
-	ret.pid = clone(fn, stack + stack_size, flags, args, &ret.fd);
+	ret.pid = clone(fn, ret.stack + CHILD_STACK_SIZE, flags, args, &ret.fd);
 #endif
 
 	if (ret.pid < 0) {
@@ -129,6 +138,11 @@ static inline int child_join(struct child *child, struct error *err)
 	else if (r > 0)
 		error_set(err, r, "child %d reported: %d", child->pid, r);
 
+	if (munmap(child->stack, CHILD_STACK_SIZE)) {
+		error_set(err, -1, "munmap of child stack failed (errno %d)", errno);
+		r = -1;
+	}
+
 	return r;
 }
 
diff --git a/tools/testing/selftests/pidfd/pidfd_test.c b/tools/testing/selftests/pidfd/pidfd_test.c
index 529eb700ac26..9a2d64901d59 100644
--- a/tools/testing/selftests/pidfd/pidfd_test.c
+++ b/tools/testing/selftests/pidfd/pidfd_test.c
@@ -441,7 +441,6 @@ static void test_pidfd_poll_exec(int use_waitpid)
 {
 	int pid, pidfd = 0;
 	int status, ret;
-	pthread_t t1;
 	time_t prog_start = time(NULL);
 	const char *test_name = "pidfd_poll check for premature notification on child thread exec";
 
@@ -500,13 +499,14 @@ static int child_poll_leader_exit_test(void *args)
 	 */
 	*child_exit_secs = time(NULL);
 	syscall(SYS_exit, 0);
+	/* Never reached, but appeases compiler thinking we should return. */
+	exit(0);
 }
 
 static void test_pidfd_poll_leader_exit(int use_waitpid)
 {
 	int pid, pidfd = 0;
-	int status, ret;
-	time_t prog_start = time(NULL);
+	int status, ret = 0;
 	const char *test_name = "pidfd_poll check for premature notification on non-empty"
 				"group leader exit";
 
diff --git a/tools/testing/selftests/pidfd/pidfd_wait.c b/tools/testing/selftests/pidfd/pidfd_wait.c
index be2943f072f6..17999e082aa7 100644
--- a/tools/testing/selftests/pidfd/pidfd_wait.c
+++ b/tools/testing/selftests/pidfd/pidfd_wait.c
@@ -39,7 +39,7 @@ static int sys_waitid(int which, pid_t pid, siginfo_t *info, int options,
 
 TEST(wait_simple)
 {
-	int pidfd = -1, status = 0;
+	int pidfd = -1;
 	pid_t parent_tid = -1;
 	struct clone_args args = {
 		.parent_tid = ptr_to_u64(&parent_tid),
@@ -47,7 +47,6 @@ TEST(wait_simple)
 		.flags = CLONE_PIDFD | CLONE_PARENT_SETTID,
 		.exit_signal = SIGCHLD,
 	};
-	int ret;
 	pid_t pid;
 	siginfo_t info = {
 		.si_signo = 0,
@@ -88,7 +87,7 @@ TEST(wait_simple)
 
 TEST(wait_states)
 {
-	int pidfd = -1, status = 0;
+	int pidfd = -1;
 	pid_t parent_tid = -1;
 	struct clone_args args = {
 		.parent_tid = ptr_to_u64(&parent_tid),
diff --git a/tools/tracing/rtla/Makefile b/tools/tracing/rtla/Makefile
index 7c39728d08de..5a1eda617992 100644
--- a/tools/tracing/rtla/Makefile
+++ b/tools/tracing/rtla/Makefile
@@ -1,5 +1,6 @@
 NAME	:=	rtla
-VERSION	:=	0.5
+# Follow the kernel version
+VERSION :=	$(shell cat VERSION 2> /dev/null || make -sC ../../.. kernelversion)
 
 # From libtracefs:
 # Makefiles suck: This macro sets a default value of $(2) for the
@@ -85,6 +86,7 @@ clean: doc_clean
 
 tarball: clean
 	rm -rf $(NAME)-$(VERSION) && mkdir $(NAME)-$(VERSION)
+	echo $(VERSION) > $(NAME)-$(VERSION)/VERSION
 	cp -r $(DIRS) $(FILES) $(NAME)-$(VERSION)
 	mkdir $(NAME)-$(VERSION)/Documentation/
 	cp -rp $(SRCTREE)/../../../Documentation/tools/rtla/* $(NAME)-$(VERSION)/Documentation/
diff --git a/tools/tracing/rtla/src/osnoise.c b/tools/tracing/rtla/src/osnoise.c
index 7b73d1eccd0e..5648f9252e58 100644
--- a/tools/tracing/rtla/src/osnoise.c
+++ b/tools/tracing/rtla/src/osnoise.c
@@ -750,6 +750,9 @@ void osnoise_put_context(struct osnoise_context *context)
  */
 void osnoise_destroy_tool(struct osnoise_tool *top)
 {
+	if (!top)
+		return;
+
 	trace_instance_destroy(&top->trace);
 
 	if (top->context)
diff --git a/tools/tracing/rtla/src/osnoise_hist.c b/tools/tracing/rtla/src/osnoise_hist.c
index 180fcbe423cd..1f0b7fce55cf 100644
--- a/tools/tracing/rtla/src/osnoise_hist.c
+++ b/tools/tracing/rtla/src/osnoise_hist.c
@@ -701,9 +701,9 @@ osnoise_hist_set_signals(struct osnoise_hist_params *params)
 int osnoise_hist_main(int argc, char *argv[])
 {
 	struct osnoise_hist_params *params;
+	struct osnoise_tool *record = NULL;
+	struct osnoise_tool *tool = NULL;
 	struct trace_instance *trace;
-	struct osnoise_tool *record;
-	struct osnoise_tool *tool;
 	int return_value = 1;
 	int retval;
 
@@ -792,9 +792,8 @@ int osnoise_hist_main(int argc, char *argv[])
 out_hist:
 	osnoise_free_histogram(tool->data);
 out_destroy:
+	osnoise_destroy_tool(record);
 	osnoise_destroy_tool(tool);
-	if (params->trace_output)
-		osnoise_destroy_tool(record);
 	free(params);
 out_exit:
 	exit(return_value);
diff --git a/tools/tracing/rtla/src/osnoise_top.c b/tools/tracing/rtla/src/osnoise_top.c
index 332b2ac205fc..c67dc28ef716 100644
--- a/tools/tracing/rtla/src/osnoise_top.c
+++ b/tools/tracing/rtla/src/osnoise_top.c
@@ -483,9 +483,9 @@ static void osnoise_top_set_signals(struct osnoise_top_params *params)
 int osnoise_top_main(int argc, char **argv)
 {
 	struct osnoise_top_params *params;
+	struct osnoise_tool *record = NULL;
+	struct osnoise_tool *tool = NULL;
 	struct trace_instance *trace;
-	struct osnoise_tool *record;
-	struct osnoise_tool *tool;
 	int return_value = 1;
 	int retval;
 
@@ -571,9 +571,8 @@ int osnoise_top_main(int argc, char **argv)
 
 out_top:
 	osnoise_free_top(tool->data);
+	osnoise_destroy_tool(record);
 	osnoise_destroy_tool(tool);
-	if (params->trace_output)
-		osnoise_destroy_tool(record);
 out_exit:
 	exit(return_value);
 }
diff --git a/tools/tracing/rtla/src/timerlat_hist.c b/tools/tracing/rtla/src/timerlat_hist.c
index 235f9620ef3d..436a799f9adf 100644
--- a/tools/tracing/rtla/src/timerlat_hist.c
+++ b/tools/tracing/rtla/src/timerlat_hist.c
@@ -729,9 +729,9 @@ timerlat_hist_set_signals(struct timerlat_hist_params *params)
 int timerlat_hist_main(int argc, char *argv[])
 {
 	struct timerlat_hist_params *params;
+	struct osnoise_tool *record = NULL;
+	struct osnoise_tool *tool = NULL;
 	struct trace_instance *trace;
-	struct osnoise_tool *record;
-	struct osnoise_tool *tool;
 	int return_value = 1;
 	int retval;
 
@@ -813,9 +813,8 @@ int timerlat_hist_main(int argc, char *argv[])
 
 out_hist:
 	timerlat_free_histogram(tool->data);
+	osnoise_destroy_tool(record);
 	osnoise_destroy_tool(tool);
-	if (params->trace_output)
-		osnoise_destroy_tool(record);
 	free(params);
 out_exit:
 	exit(return_value);
diff --git a/tools/tracing/rtla/src/timerlat_top.c b/tools/tracing/rtla/src/timerlat_top.c
index 1ebd5291539c..d4187f6534ed 100644
--- a/tools/tracing/rtla/src/timerlat_top.c
+++ b/tools/tracing/rtla/src/timerlat_top.c
@@ -521,9 +521,9 @@ timerlat_top_set_signals(struct timerlat_top_params *params)
 int timerlat_top_main(int argc, char *argv[])
 {
 	struct timerlat_top_params *params;
+	struct osnoise_tool *record = NULL;
+	struct osnoise_tool *top = NULL;
 	struct trace_instance *trace;
-	struct osnoise_tool *record;
-	struct osnoise_tool *top;
 	int return_value = 1;
 	int retval;
 
@@ -609,9 +609,8 @@ int timerlat_top_main(int argc, char *argv[])
 
 out_top:
 	timerlat_free_top(top->data);
+	osnoise_destroy_tool(record);
 	osnoise_destroy_tool(top);
-	if (params->trace_output)
-		osnoise_destroy_tool(record);
 	free(params);
 out_exit:
 	exit(return_value);
diff --git a/tools/tracing/rtla/src/trace.c b/tools/tracing/rtla/src/trace.c
index 107a0c6387f7..83de259abcc1 100644
--- a/tools/tracing/rtla/src/trace.c
+++ b/tools/tracing/rtla/src/trace.c
@@ -20,14 +20,14 @@ int enable_tracer_by_name(struct tracefs_instance *inst, const char *tracer_name
 
 	tracer = TRACEFS_TRACER_CUSTOM;
 
-	debug_msg("enabling %s tracer\n", tracer_name);
+	debug_msg("Enabling %s tracer\n", tracer_name);
 
 	retval = tracefs_tracer_set(inst, tracer, tracer_name);
 	if (retval < 0) {
 		if (errno == ENODEV)
-			err_msg("tracer %s not found!\n", tracer_name);
+			err_msg("Tracer %s not found!\n", tracer_name);
 
-		err_msg("failed to enable the tracer %s\n", tracer_name);
+		err_msg("Failed to enable the %s tracer\n", tracer_name);
 		return -1;
 	}
 
@@ -44,7 +44,7 @@ void disable_tracer(struct tracefs_instance *inst)
 
 	retval = tracefs_tracer_set(inst, t);
 	if (retval < 0)
-		err_msg("oops, error disabling tracer\n");
+		err_msg("Oops, error disabling tracer\n");
 }
 
 /*
diff --git a/tools/tracing/rtla/src/utils.c b/tools/tracing/rtla/src/utils.c
index 1c9f0eea6166..ffaf8ec84001 100644
--- a/tools/tracing/rtla/src/utils.c
+++ b/tools/tracing/rtla/src/utils.c
@@ -77,11 +77,11 @@ void get_duration(time_t start_time, char *output, int output_size)
 	time_t duration;
 
 	duration = difftime(now, start_time);
-	tm_info = localtime(&duration);
+	tm_info = gmtime(&duration);
 
 	snprintf(output, output_size, "%3d %02d:%02d:%02d",
 			tm_info->tm_yday,
-			tm_info->tm_hour - 1,
+			tm_info->tm_hour,
 			tm_info->tm_min,
 			tm_info->tm_sec);
 }