Merge 6.11-rc3 into char-misc-next

We need the char/misc fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

24 files changed, 333 insertions, 66 deletions

diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index 489cbed7e82a..12796808f07a 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -82,7 +82,30 @@ FILES=                                          \
 
 FILES := $(addprefix $(OUTPUT),$(FILES))
 
-PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config
+# Some distros provide the command $(CROSS_COMPILE)pkg-config for
+# searching packges installed with Multiarch. Use it for cross
+# compilation if it is existed.
+ifneq (, $(shell which $(CROSS_COMPILE)pkg-config))
+  PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config
+else
+  PKG_CONFIG ?= pkg-config
+
+  # PKG_CONFIG_PATH or PKG_CONFIG_LIBDIR, alongside PKG_CONFIG_SYSROOT_DIR
+  # for modified system root, are required for the cross compilation.
+  # If these PKG_CONFIG environment variables are not set, Multiarch library
+  # paths are used instead.
+  ifdef CROSS_COMPILE
+    ifeq ($(PKG_CONFIG_LIBDIR)$(PKG_CONFIG_PATH)$(PKG_CONFIG_SYSROOT_DIR),)
+      CROSS_ARCH = $(shell $(CC) -dumpmachine)
+      PKG_CONFIG_LIBDIR := /usr/local/$(CROSS_ARCH)/lib/pkgconfig/
+      PKG_CONFIG_LIBDIR := $(PKG_CONFIG_LIBDIR):/usr/local/lib/$(CROSS_ARCH)/pkgconfig/
+      PKG_CONFIG_LIBDIR := $(PKG_CONFIG_LIBDIR):/usr/lib/$(CROSS_ARCH)/pkgconfig/
+      PKG_CONFIG_LIBDIR := $(PKG_CONFIG_LIBDIR):/usr/local/share/pkgconfig/
+      PKG_CONFIG_LIBDIR := $(PKG_CONFIG_LIBDIR):/usr/share/pkgconfig/
+      export PKG_CONFIG_LIBDIR
+    endif
+  endif
+endif
 
 all: $(FILES)
 
@@ -147,7 +170,17 @@ $(OUTPUT)test-libopencsd.bin:
 
 DWARFLIBS := -ldw
 ifeq ($(findstring -static,${LDFLAGS}),-static)
-DWARFLIBS += -lelf -lebl -lz -llzma -lbz2
+  DWARFLIBS += -lelf -lz -llzma -lbz2 -lzstd
+
+  LIBDW_VERSION := $(shell $(PKG_CONFIG) --modversion libdw)
+  LIBDW_VERSION_1 := $(word 1, $(subst ., ,$(LIBDW_VERSION)))
+  LIBDW_VERSION_2 := $(word 2, $(subst ., ,$(LIBDW_VERSION)))
+
+  # Elfutils merged libebl.a into libdw.a starting from version 0.177,
+  # Link libebl.a only if libdw is older than this version.
+  ifeq ($(shell test $(LIBDW_VERSION_2) -lt 177; echo $$?),0)
+    DWARFLIBS += -lebl
+  endif
 endif
 
 $(OUTPUT)test-dwarf.bin:
@@ -178,27 +211,27 @@ $(OUTPUT)test-numa_num_possible_cpus.bin:
 	$(BUILD) -lnuma
 
 $(OUTPUT)test-libunwind.bin:
-	$(BUILD) -lelf
+	$(BUILD) -lelf -llzma
 
 $(OUTPUT)test-libunwind-debug-frame.bin:
-	$(BUILD) -lelf
+	$(BUILD) -lelf -llzma
 $(OUTPUT)test-libunwind-x86.bin:
-	$(BUILD) -lelf -lunwind-x86
+	$(BUILD) -lelf -llzma -lunwind-x86
 
 $(OUTPUT)test-libunwind-x86_64.bin:
-	$(BUILD) -lelf -lunwind-x86_64
+	$(BUILD) -lelf -llzma -lunwind-x86_64
 
 $(OUTPUT)test-libunwind-arm.bin:
-	$(BUILD) -lelf -lunwind-arm
+	$(BUILD) -lelf -llzma -lunwind-arm
 
 $(OUTPUT)test-libunwind-aarch64.bin:
-	$(BUILD) -lelf -lunwind-aarch64
+	$(BUILD) -lelf -llzma -lunwind-aarch64
 
 $(OUTPUT)test-libunwind-debug-frame-arm.bin:
-	$(BUILD) -lelf -lunwind-arm
+	$(BUILD) -lelf -llzma -lunwind-arm
 
 $(OUTPUT)test-libunwind-debug-frame-aarch64.bin:
-	$(BUILD) -lelf -lunwind-aarch64
+	$(BUILD) -lelf -llzma -lunwind-aarch64
 
 $(OUTPUT)test-libaudit.bin:
 	$(BUILD) -laudit
diff --git a/tools/perf/Documentation/Build.txt b/tools/perf/Documentation/Build.txt
index 3766886c4bca..83dc87c662b6 100644
--- a/tools/perf/Documentation/Build.txt
+++ b/tools/perf/Documentation/Build.txt
@@ -71,3 +71,31 @@ supported by GCC. UBSan detects undefined behaviors of programs at runtime.
   $ UBSAN_OPTIONS=print_stacktrace=1 ./perf record -a
 
 If UBSan detects any problem at runtime, it outputs a “runtime error:” message.
+
+4) Cross compilation
+====================
+As Multiarch is commonly supported in Linux distributions, we can install
+libraries for multiple architectures on the same system and then cross-compile
+Linux perf. For example, Aarch64 libraries and toolchains can be installed on
+an x86_64 machine, allowing us to compile perf for an Aarch64 target.
+
+Below is the command for building the perf with dynamic linking.
+
+  $ cd /path/to/Linux
+  $ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- -C tools/perf
+
+For static linking, the option `LDFLAGS="-static"` is required.
+
+  $ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- \
+    LDFLAGS="-static" -C tools/perf
+
+In the embedded system world, a use case is to explicitly specify the package
+configuration paths for cross building:
+
+  $ PKG_CONFIG_SYSROOT_DIR="/path/to/cross/build/sysroot" \
+    PKG_CONFIG_LIBDIR="/usr/lib/:/usr/local/lib" \
+    make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- -C tools/perf
+
+In this case, the variable PKG_CONFIG_SYSROOT_DIR can be used alongside the
+variable PKG_CONFIG_LIBDIR or PKG_CONFIG_PATH to prepend the sysroot path to
+the library paths for cross compilation.
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index c896babf7a74..fa679db61f62 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -152,7 +152,17 @@ ifdef LIBDW_DIR
 endif
 DWARFLIBS := -ldw
 ifeq ($(findstring -static,${LDFLAGS}),-static)
-  DWARFLIBS += -lelf -lebl -ldl -lz -llzma -lbz2
+  DWARFLIBS += -lelf -ldl -lz -llzma -lbz2 -lzstd
+
+  LIBDW_VERSION := $(shell $(PKG_CONFIG) --modversion libdw)
+  LIBDW_VERSION_1 := $(word 1, $(subst ., ,$(LIBDW_VERSION)))
+  LIBDW_VERSION_2 := $(word 2, $(subst ., ,$(LIBDW_VERSION)))
+
+  # Elfutils merged libebl.a into libdw.a starting from version 0.177,
+  # Link libebl.a only if libdw is older than this version.
+  ifeq ($(shell test $(LIBDW_VERSION_2) -lt 177; echo $$?),0)
+    DWARFLIBS += -lebl
+  endif
 endif
 FEATURE_CHECK_CFLAGS-libdw-dwarf-unwind := $(LIBDW_CFLAGS)
 FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) $(DWARFLIBS)
@@ -296,6 +306,11 @@ endif
 
 ifdef PYTHON_CONFIG
   PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) $(PYTHON_CONFIG_LDFLAGS) 2>/dev/null)
+  # Update the python flags for cross compilation
+  ifdef CROSS_COMPILE
+    PYTHON_NATIVE := $(shell echo $(PYTHON_EMBED_LDOPTS) | sed 's/\(-L.*\/\)\(.*-linux-gnu\).*/\2/')
+    PYTHON_EMBED_LDOPTS := $(subst $(PYTHON_NATIVE),$(shell $(CC) -dumpmachine),$(PYTHON_EMBED_LDOPTS))
+  endif
   PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))
   PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil
   PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --includes 2>/dev/null)
@@ -897,6 +912,9 @@ else
          PYTHON_SETUPTOOLS_INSTALLED := $(shell $(PYTHON) -c 'import setuptools;' 2> /dev/null && echo "yes" || echo "no")
          ifeq ($(PYTHON_SETUPTOOLS_INSTALLED), yes)
            PYTHON_EXTENSION_SUFFIX := $(shell $(PYTHON) -c 'from importlib import machinery; print(machinery.EXTENSION_SUFFIXES[0])')
+           ifdef CROSS_COMPILE
+             PYTHON_EXTENSION_SUFFIX := $(subst $(PYTHON_NATIVE),$(shell $(CC) -dumpmachine),$(PYTHON_EXTENSION_SUFFIX))
+           endif
            LANG_BINDINGS += $(obj-perf)python/perf$(PYTHON_EXTENSION_SUFFIX)
 	 else
            $(warning Missing python setuptools, the python binding won't be built, please install python3-setuptools or equivalent)
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 175e4c7898f0..f8148db5fc38 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -193,7 +193,32 @@ HOSTLD  ?= ld
 HOSTAR  ?= ar
 CLANG   ?= clang
 
-PKG_CONFIG = $(CROSS_COMPILE)pkg-config
+# Some distros provide the command $(CROSS_COMPILE)pkg-config for
+# searching packges installed with Multiarch. Use it for cross
+# compilation if it is existed.
+ifneq (, $(shell which $(CROSS_COMPILE)pkg-config))
+  PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config
+else
+  PKG_CONFIG ?= pkg-config
+
+  # PKG_CONFIG_PATH or PKG_CONFIG_LIBDIR, alongside PKG_CONFIG_SYSROOT_DIR
+  # for modified system root, is required for the cross compilation.
+  # If these PKG_CONFIG environment variables are not set, Multiarch library
+  # paths are used instead.
+  ifdef CROSS_COMPILE
+    ifeq ($(PKG_CONFIG_LIBDIR)$(PKG_CONFIG_PATH)$(PKG_CONFIG_SYSROOT_DIR),)
+      CROSS_ARCH = $(shell $(CC) -dumpmachine)
+      PKG_CONFIG_LIBDIR := /usr/local/$(CROSS_ARCH)/lib/pkgconfig/
+      PKG_CONFIG_LIBDIR := $(PKG_CONFIG_LIBDIR):/usr/local/lib/$(CROSS_ARCH)/pkgconfig/
+      PKG_CONFIG_LIBDIR := $(PKG_CONFIG_LIBDIR):/usr/lib/$(CROSS_ARCH)/pkgconfig/
+      PKG_CONFIG_LIBDIR := $(PKG_CONFIG_LIBDIR):/usr/local/share/pkgconfig/
+      PKG_CONFIG_LIBDIR := $(PKG_CONFIG_LIBDIR):/usr/share/pkgconfig/
+      export PKG_CONFIG_LIBDIR
+      $(warning Missing PKG_CONFIG_LIBDIR, PKG_CONFIG_PATH and PKG_CONFIG_SYSROOT_DIR for cross compilation,)
+      $(warning set PKG_CONFIG_LIBDIR for using Multiarch libs.)
+    endif
+  endif
+endif
 
 RM      = rm -f
 LN      = ln -f
diff --git a/tools/perf/pmu-events/arch/riscv/andes/ax45/firmware.json b/tools/perf/pmu-events/arch/riscv/andes/ax45/firmware.json
index 9b4a032186a7..7149caec4f80 100644
--- a/tools/perf/pmu-events/arch/riscv/andes/ax45/firmware.json
+++ b/tools/perf/pmu-events/arch/riscv/andes/ax45/firmware.json
@@ -36,7 +36,7 @@
     "ArchStdEvent": "FW_SFENCE_VMA_RECEIVED"
   },
   {
-    "ArchStdEvent": "FW_SFENCE_VMA_RECEIVED"
+    "ArchStdEvent": "FW_SFENCE_VMA_ASID_SENT"
   },
   {
     "ArchStdEvent": "FW_SFENCE_VMA_ASID_RECEIVED"
diff --git a/tools/perf/pmu-events/arch/riscv/riscv-sbi-firmware.json b/tools/perf/pmu-events/arch/riscv/riscv-sbi-firmware.json
index a9939823b14b..0c9b9a2d2958 100644
--- a/tools/perf/pmu-events/arch/riscv/riscv-sbi-firmware.json
+++ b/tools/perf/pmu-events/arch/riscv/riscv-sbi-firmware.json
@@ -74,7 +74,7 @@
   {
     "PublicDescription": "Sent SFENCE.VMA with ASID request to other HART event",
     "ConfigCode": "0x800000000000000c",
-    "EventName": "FW_SFENCE_VMA_RECEIVED",
+    "EventName": "FW_SFENCE_VMA_ASID_SENT",
     "BriefDescription": "Sent SFENCE.VMA with ASID request to other HART event"
   },
   {
diff --git a/tools/perf/pmu-events/arch/riscv/sifive/u74/firmware.json b/tools/perf/pmu-events/arch/riscv/sifive/u74/firmware.json
index 9b4a032186a7..7149caec4f80 100644
--- a/tools/perf/pmu-events/arch/riscv/sifive/u74/firmware.json
+++ b/tools/perf/pmu-events/arch/riscv/sifive/u74/firmware.json
@@ -36,7 +36,7 @@
     "ArchStdEvent": "FW_SFENCE_VMA_RECEIVED"
   },
   {
-    "ArchStdEvent": "FW_SFENCE_VMA_RECEIVED"
+    "ArchStdEvent": "FW_SFENCE_VMA_ASID_SENT"
   },
   {
     "ArchStdEvent": "FW_SFENCE_VMA_ASID_RECEIVED"
diff --git a/tools/perf/pmu-events/arch/riscv/starfive/dubhe-80/firmware.json b/tools/perf/pmu-events/arch/riscv/starfive/dubhe-80/firmware.json
index 9b4a032186a7..7149caec4f80 100644
--- a/tools/perf/pmu-events/arch/riscv/starfive/dubhe-80/firmware.json
+++ b/tools/perf/pmu-events/arch/riscv/starfive/dubhe-80/firmware.json
@@ -36,7 +36,7 @@
     "ArchStdEvent": "FW_SFENCE_VMA_RECEIVED"
   },
   {
-    "ArchStdEvent": "FW_SFENCE_VMA_RECEIVED"
+    "ArchStdEvent": "FW_SFENCE_VMA_ASID_SENT"
   },
   {
     "ArchStdEvent": "FW_SFENCE_VMA_ASID_RECEIVED"
diff --git a/tools/perf/pmu-events/arch/riscv/thead/c900-legacy/firmware.json b/tools/perf/pmu-events/arch/riscv/thead/c900-legacy/firmware.json
index 9b4a032186a7..7149caec4f80 100644
--- a/tools/perf/pmu-events/arch/riscv/thead/c900-legacy/firmware.json
+++ b/tools/perf/pmu-events/arch/riscv/thead/c900-legacy/firmware.json
@@ -36,7 +36,7 @@
     "ArchStdEvent": "FW_SFENCE_VMA_RECEIVED"
   },
   {
-    "ArchStdEvent": "FW_SFENCE_VMA_RECEIVED"
+    "ArchStdEvent": "FW_SFENCE_VMA_ASID_SENT"
   },
   {
     "ArchStdEvent": "FW_SFENCE_VMA_ASID_RECEIVED"
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index 1730b852a947..6d075648d2cc 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -1141,7 +1141,7 @@ int hist_entry__append_callchain(struct hist_entry *he, struct perf_sample *samp
 int fill_callchain_info(struct addr_location *al, struct callchain_cursor_node *node,
 			bool hide_unresolved)
 {
-	struct machine *machine = maps__machine(node->ms.maps);
+	struct machine *machine = node->ms.maps ? maps__machine(node->ms.maps) : NULL;
 
 	maps__put(al->maps);
 	al->maps = maps__get(node->ms.maps);
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index dd49c1d23a60..81d4757ecd4c 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -713,7 +713,7 @@ $(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp
 # Make sure we are able to include and link libbpf against c++.
 $(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
 	$(call msg,CXX,,$@)
-	$(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
+	$(Q)$(CXX) $(subst -D_GNU_SOURCE=,,$(CFLAGS)) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
 
 # Benchmark runner
 $(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ)
diff --git a/tools/testing/selftests/bpf/prog_tests/uprobe_syscall.c b/tools/testing/selftests/bpf/prog_tests/uprobe_syscall.c
index bd8c75b620c2..c397336fe1ed 100644
--- a/tools/testing/selftests/bpf/prog_tests/uprobe_syscall.c
+++ b/tools/testing/selftests/bpf/prog_tests/uprobe_syscall.c
@@ -216,7 +216,7 @@ static void test_uretprobe_regs_change(void)
 }
 
 #ifndef __NR_uretprobe
-#define __NR_uretprobe 467
+#define __NR_uretprobe 335
 #endif
 
 __naked unsigned long uretprobe_syscall_call_1(void)
@@ -253,7 +253,7 @@ static void test_uretprobe_syscall_call(void)
 	struct uprobe_syscall_executed *skel;
 	int pid, status, err, go[2], c;
 
-	if (ASSERT_OK(pipe(go), "pipe"))
+	if (!ASSERT_OK(pipe(go), "pipe"))
 		return;
 
 	skel = uprobe_syscall_executed__open_and_load();
diff --git a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
index 5f541522364f..5d0a809dc2df 100644
--- a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
+++ b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
@@ -29,9 +29,11 @@ static int check_vgem(int fd)
 	version.name = name;
 
 	ret = ioctl(fd, DRM_IOCTL_VERSION, &version);
-	if (ret)
+	if (ret || version.name_len != 4)
 		return 0;
 
+	name[4] = '\0';
+
 	return !strcmp(name, "vgem");
 }
 
diff --git a/tools/testing/selftests/drivers/net/hw/rss_ctx.py b/tools/testing/selftests/drivers/net/hw/rss_ctx.py
index 931dbc36ca43..011508ca604b 100755
--- a/tools/testing/selftests/drivers/net/hw/rss_ctx.py
+++ b/tools/testing/selftests/drivers/net/hw/rss_ctx.py
@@ -19,6 +19,15 @@ def _rss_key_rand(length):
     return [random.randint(0, 255) for _ in range(length)]
 
 
+def _rss_key_check(cfg, data=None, context=0):
+    if data is None:
+        data = get_rss(cfg, context=context)
+    if 'rss-hash-key' not in data:
+        return
+    non_zero = [x for x in data['rss-hash-key'] if x != 0]
+    ksft_eq(bool(non_zero), True, comment=f"RSS key is all zero {data['rss-hash-key']}")
+
+
 def get_rss(cfg, context=0):
     return ethtool(f"-x {cfg.ifname} context {context}", json=True)[0]
 
@@ -90,8 +99,9 @@ def _send_traffic_check(cfg, port, name, params):
 def test_rss_key_indir(cfg):
     """Test basics like updating the main RSS key and indirection table."""
 
-    if len(_get_rx_cnts(cfg)) < 2:
-        KsftSkipEx("Device has only one queue (or doesn't support queue stats)")
+    qcnt = len(_get_rx_cnts(cfg))
+    if qcnt < 3:
+        KsftSkipEx("Device has fewer than 3 queues (or doesn't support queue stats)")
 
     data = get_rss(cfg)
     want_keys = ['rss-hash-key', 'rss-hash-function', 'rss-indirection-table']
@@ -101,6 +111,7 @@ def test_rss_key_indir(cfg):
         if not data[k]:
             raise KsftFailEx(f"ethtool results empty for '{k}': {data[k]}")
 
+    _rss_key_check(cfg, data=data)
     key_len = len(data['rss-hash-key'])
 
     # Set the key
@@ -110,9 +121,26 @@ def test_rss_key_indir(cfg):
     data = get_rss(cfg)
     ksft_eq(key, data['rss-hash-key'])
 
+    # Set the indirection table and the key together
+    key = _rss_key_rand(key_len)
+    ethtool(f"-X {cfg.ifname} equal 3 hkey " + _rss_key_str(key))
+    reset_indir = defer(ethtool, f"-X {cfg.ifname} default")
+
+    data = get_rss(cfg)
+    _rss_key_check(cfg, data=data)
+    ksft_eq(0, min(data['rss-indirection-table']))
+    ksft_eq(2, max(data['rss-indirection-table']))
+
+    # Reset indirection table and set the key
+    key = _rss_key_rand(key_len)
+    ethtool(f"-X {cfg.ifname} default hkey " + _rss_key_str(key))
+    data = get_rss(cfg)
+    _rss_key_check(cfg, data=data)
+    ksft_eq(0, min(data['rss-indirection-table']))
+    ksft_eq(qcnt - 1, max(data['rss-indirection-table']))
+
     # Set the indirection table
     ethtool(f"-X {cfg.ifname} equal 2")
-    reset_indir = defer(ethtool, f"-X {cfg.ifname} default")
     data = get_rss(cfg)
     ksft_eq(0, min(data['rss-indirection-table']))
     ksft_eq(1, max(data['rss-indirection-table']))
@@ -317,8 +345,11 @@ def test_rss_context(cfg, ctx_cnt=1, create_with_cfg=None):
             ctx_cnt = i
             break
 
+        _rss_key_check(cfg, context=ctx_id)
+
         if not create_with_cfg:
             ethtool(f"-X {cfg.ifname} context {ctx_id} {want_cfg}")
+            _rss_key_check(cfg, context=ctx_id)
 
         # Sanity check the context we just created
         data = get_rss(cfg, ctx_id)
diff --git a/tools/testing/selftests/hid/hid_bpf.c b/tools/testing/selftests/hid/hid_bpf.c
index dc0408a831d0..75b7b4ef6cfa 100644
--- a/tools/testing/selftests/hid/hid_bpf.c
+++ b/tools/testing/selftests/hid/hid_bpf.c
@@ -532,6 +532,7 @@ static void load_programs(const struct test_program programs[],
 			  FIXTURE_DATA(hid_bpf) * self,
 			  const FIXTURE_VARIANT(hid_bpf) * variant)
 {
+	struct bpf_map *iter_map;
 	int err = -EINVAL;
 
 	ASSERT_LE(progs_count, ARRAY_SIZE(self->hid_links))
@@ -564,6 +565,13 @@ static void load_programs(const struct test_program programs[],
 		*ops_hid_id = self->hid_id;
 	}
 
+	/* we disable the auto-attach feature of all maps because we
+	 * only want the tested one to be manually attached in the next
+	 * call to bpf_map__attach_struct_ops()
+	 */
+	bpf_object__for_each_map(iter_map, *self->skel->skeleton->obj)
+		bpf_map__set_autoattach(iter_map, false);
+
 	err = hid__load(self->skel);
 	ASSERT_OK(err) TH_LOG("hid_skel_load failed: %d", err);
 
@@ -687,6 +695,24 @@ TEST_F(hid_bpf, subprog_raw_event)
 }
 
 /*
+ * Attach hid_first_event to the given uhid device,
+ * attempt at re-attaching it, we should not lock and
+ * return an invalid struct bpf_link
+ */
+TEST_F(hid_bpf, multiple_attach)
+{
+	const struct test_program progs[] = {
+		{ .name = "hid_first_event" },
+	};
+	struct bpf_link *link;
+
+	LOAD_PROGRAMS(progs);
+
+	link = bpf_map__attach_struct_ops(self->skel->maps.first_event);
+	ASSERT_NULL(link) TH_LOG("unexpected return value when re-attaching the struct_ops");
+}
+
+/*
  * Ensures that we can attach/detach programs
  */
 TEST_F(hid_bpf, test_attach_detach)
diff --git a/tools/testing/selftests/hid/progs/hid.c b/tools/testing/selftests/hid/progs/hid.c
index ee9bbbcf751b..5ecc845ef792 100644
--- a/tools/testing/selftests/hid/progs/hid.c
+++ b/tools/testing/selftests/hid/progs/hid.c
@@ -455,7 +455,7 @@ struct {
 	__type(value, struct elem);
 } hmap SEC(".maps");
 
-static int wq_cb_sleepable(void *map, int *key, struct bpf_wq *work)
+static int wq_cb_sleepable(void *map, int *key, void *work)
 {
 	__u8 buf[9] = {2, 3, 4, 5, 6, 7, 8, 9, 10};
 	struct hid_bpf_ctx *hid_ctx;
diff --git a/tools/testing/selftests/hid/progs/hid_bpf_helpers.h b/tools/testing/selftests/hid/progs/hid_bpf_helpers.h
index cfe37f491906..e5db897586bb 100644
--- a/tools/testing/selftests/hid/progs/hid_bpf_helpers.h
+++ b/tools/testing/selftests/hid/progs/hid_bpf_helpers.h
@@ -114,7 +114,7 @@ extern int hid_bpf_try_input_report(struct hid_bpf_ctx *ctx,
 extern int bpf_wq_init(struct bpf_wq *wq, void *p__map, unsigned int flags) __weak __ksym;
 extern int bpf_wq_start(struct bpf_wq *wq, unsigned int flags) __weak __ksym;
 extern int bpf_wq_set_callback_impl(struct bpf_wq *wq,
-		int (callback_fn)(void *map, int *key, struct bpf_wq *wq),
+		int (callback_fn)(void *map, int *key, void *wq),
 		unsigned int flags__k, void *aux__ign) __ksym;
 #define bpf_wq_set_callback(timer, cb, flags) \
 	bpf_wq_set_callback_impl(timer, cb, flags, NULL)
diff --git a/tools/testing/selftests/kselftest/ksft.py b/tools/testing/selftests/kselftest/ksft.py
index cd89fb2bc10e..bf215790a89d 100644
--- a/tools/testing/selftests/kselftest/ksft.py
+++ b/tools/testing/selftests/kselftest/ksft.py
@@ -70,7 +70,7 @@ def test_result(condition, description=""):
 
 
 def finished():
-    if ksft_cnt["pass"] == ksft_num_tests:
+    if ksft_cnt["pass"] + ksft_cnt["skip"] == ksft_num_tests:
         exit_code = KSFT_PASS
     else:
         exit_code = KSFT_FAIL
diff --git a/tools/testing/selftests/kvm/riscv/get-reg-list.c b/tools/testing/selftests/kvm/riscv/get-reg-list.c
index f92c2fb23fcd..8e34f7fa44e9 100644
--- a/tools/testing/selftests/kvm/riscv/get-reg-list.c
+++ b/tools/testing/selftests/kvm/riscv/get-reg-list.c
@@ -961,10 +961,10 @@ KVM_ISA_EXT_SIMPLE_CONFIG(zbkb, ZBKB);
 KVM_ISA_EXT_SIMPLE_CONFIG(zbkc, ZBKC);
 KVM_ISA_EXT_SIMPLE_CONFIG(zbkx, ZBKX);
 KVM_ISA_EXT_SIMPLE_CONFIG(zbs, ZBS);
-KVM_ISA_EXT_SIMPLE_CONFIG(zca, ZCA),
-KVM_ISA_EXT_SIMPLE_CONFIG(zcb, ZCB),
-KVM_ISA_EXT_SIMPLE_CONFIG(zcd, ZCD),
-KVM_ISA_EXT_SIMPLE_CONFIG(zcf, ZCF),
+KVM_ISA_EXT_SIMPLE_CONFIG(zca, ZCA);
+KVM_ISA_EXT_SIMPLE_CONFIG(zcb, ZCB);
+KVM_ISA_EXT_SIMPLE_CONFIG(zcd, ZCD);
+KVM_ISA_EXT_SIMPLE_CONFIG(zcf, ZCF);
 KVM_ISA_EXT_SIMPLE_CONFIG(zcmop, ZCMOP);
 KVM_ISA_EXT_SIMPLE_CONFIG(zfa, ZFA);
 KVM_ISA_EXT_SIMPLE_CONFIG(zfh, ZFH);
diff --git a/tools/testing/selftests/mm/Makefile b/tools/testing/selftests/mm/Makefile
index 901e0d07765b..7b8a5def54a1 100644
--- a/tools/testing/selftests/mm/Makefile
+++ b/tools/testing/selftests/mm/Makefile
@@ -110,7 +110,7 @@ endif
 
 endif
 
-ifneq (,$(filter $(ARCH),arm64 ia64 mips64 parisc64 powerpc riscv64 s390x sparc64 x86_64))
+ifneq (,$(filter $(ARCH),arm64 ia64 mips64 parisc64 powerpc riscv64 s390x sparc64 x86_64 s390))
 TEST_GEN_FILES += va_high_addr_switch
 TEST_GEN_FILES += virtual_address_range
 TEST_GEN_FILES += write_to_hugetlbfs
diff --git a/tools/testing/selftests/mm/mremap_test.c b/tools/testing/selftests/mm/mremap_test.c
index 1b03bcfaefdf..5a3a9bcba640 100644
--- a/tools/testing/selftests/mm/mremap_test.c
+++ b/tools/testing/selftests/mm/mremap_test.c
@@ -22,8 +22,10 @@
 #define VALIDATION_DEFAULT_THRESHOLD 4	/* 4MB */
 #define VALIDATION_NO_THRESHOLD 0	/* Verify the entire region */
 
+#ifndef MIN
 #define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
 #define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
+#endif
 #define SIZE_MB(m) ((size_t)m * (1024 * 1024))
 #define SIZE_KB(k) ((size_t)k * 1024)
 
diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.c b/tools/testing/selftests/net/mptcp/mptcp_connect.c
index d2043ec3bf6d..4209b9569039 100644
--- a/tools/testing/selftests/net/mptcp/mptcp_connect.c
+++ b/tools/testing/selftests/net/mptcp/mptcp_connect.c
@@ -1115,11 +1115,11 @@ again:
 		return 1;
 	}
 
-	if (--cfg_repeat > 0) {
-		if (cfg_input)
-			close(fd);
+	if (cfg_input)
+		close(fd);
+
+	if (--cfg_repeat > 0)
 		goto again;
-	}
 
 	return 0;
 }
diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 108aeeb84ef1..9ea6d698e9d3 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -661,7 +661,7 @@ pm_nl_check_endpoint()
 	done
 
 	if [ -z "${id}" ]; then
-		test_fail "bad test - missing endpoint id"
+		fail_test "bad test - missing endpoint id"
 		return
 	fi
 
@@ -1415,18 +1415,28 @@ chk_add_nr()
 	local add_nr=$1
 	local echo_nr=$2
 	local port_nr=${3:-0}
-	local syn_nr=${4:-$port_nr}
-	local syn_ack_nr=${5:-$port_nr}
-	local ack_nr=${6:-$port_nr}
-	local mis_syn_nr=${7:-0}
-	local mis_ack_nr=${8:-0}
+	local ns_invert=${4:-""}
+	local syn_nr=$port_nr
+	local syn_ack_nr=$port_nr
+	local ack_nr=$port_nr
+	local mis_syn_nr=0
+	local mis_ack_nr=0
+	local ns_tx=$ns1
+	local ns_rx=$ns2
+	local extra_msg=""
 	local count
 	local timeout
 
-	timeout=$(ip netns exec $ns1 sysctl -n net.mptcp.add_addr_timeout)
+	if [[ $ns_invert = "invert" ]]; then
+		ns_tx=$ns2
+		ns_rx=$ns1
+		extra_msg="invert"
+	fi
+
+	timeout=$(ip netns exec ${ns_tx} sysctl -n net.mptcp.add_addr_timeout)
 
 	print_check "add"
-	count=$(mptcp_lib_get_counter ${ns2} "MPTcpExtAddAddr")
+	count=$(mptcp_lib_get_counter ${ns_rx} "MPTcpExtAddAddr")
 	if [ -z "$count" ]; then
 		print_skip
 	# if the test configured a short timeout tolerate greater then expected
@@ -1438,7 +1448,7 @@ chk_add_nr()
 	fi
 
 	print_check "echo"
-	count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtEchoAdd")
+	count=$(mptcp_lib_get_counter ${ns_tx} "MPTcpExtEchoAdd")
 	if [ -z "$count" ]; then
 		print_skip
 	elif [ "$count" != "$echo_nr" ]; then
@@ -1449,7 +1459,7 @@ chk_add_nr()
 
 	if [ $port_nr -gt 0 ]; then
 		print_check "pt"
-		count=$(mptcp_lib_get_counter ${ns2} "MPTcpExtPortAdd")
+		count=$(mptcp_lib_get_counter ${ns_rx} "MPTcpExtPortAdd")
 		if [ -z "$count" ]; then
 			print_skip
 		elif [ "$count" != "$port_nr" ]; then
@@ -1459,7 +1469,7 @@ chk_add_nr()
 		fi
 
 		print_check "syn"
-		count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtMPJoinPortSynRx")
+		count=$(mptcp_lib_get_counter ${ns_tx} "MPTcpExtMPJoinPortSynRx")
 		if [ -z "$count" ]; then
 			print_skip
 		elif [ "$count" != "$syn_nr" ]; then
@@ -1470,7 +1480,7 @@ chk_add_nr()
 		fi
 
 		print_check "synack"
-		count=$(mptcp_lib_get_counter ${ns2} "MPTcpExtMPJoinPortSynAckRx")
+		count=$(mptcp_lib_get_counter ${ns_rx} "MPTcpExtMPJoinPortSynAckRx")
 		if [ -z "$count" ]; then
 			print_skip
 		elif [ "$count" != "$syn_ack_nr" ]; then
@@ -1481,7 +1491,7 @@ chk_add_nr()
 		fi
 
 		print_check "ack"
-		count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtMPJoinPortAckRx")
+		count=$(mptcp_lib_get_counter ${ns_tx} "MPTcpExtMPJoinPortAckRx")
 		if [ -z "$count" ]; then
 			print_skip
 		elif [ "$count" != "$ack_nr" ]; then
@@ -1492,7 +1502,7 @@ chk_add_nr()
 		fi
 
 		print_check "syn"
-		count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtMismatchPortSynRx")
+		count=$(mptcp_lib_get_counter ${ns_tx} "MPTcpExtMismatchPortSynRx")
 		if [ -z "$count" ]; then
 			print_skip
 		elif [ "$count" != "$mis_syn_nr" ]; then
@@ -1503,7 +1513,7 @@ chk_add_nr()
 		fi
 
 		print_check "ack"
-		count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtMismatchPortAckRx")
+		count=$(mptcp_lib_get_counter ${ns_tx} "MPTcpExtMismatchPortAckRx")
 		if [ -z "$count" ]; then
 			print_skip
 		elif [ "$count" != "$mis_ack_nr" ]; then
@@ -1513,6 +1523,8 @@ chk_add_nr()
 			print_ok
 		fi
 	fi
+
+	print_info "$extra_msg"
 }
 
 chk_add_tx_nr()
@@ -1634,6 +1646,8 @@ chk_prio_nr()
 {
 	local mp_prio_nr_tx=$1
 	local mp_prio_nr_rx=$2
+	local mpj_syn=$3
+	local mpj_syn_ack=$4
 	local count
 
 	print_check "ptx"
@@ -1655,6 +1669,26 @@ chk_prio_nr()
 	else
 		print_ok
 	fi
+
+	print_check "syn backup"
+	count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtMPJoinSynBackupRx")
+	if [ -z "$count" ]; then
+		print_skip
+	elif [ "$count" != "$mpj_syn" ]; then
+		fail_test "got $count JOIN[s] syn with Backup expected $mpj_syn"
+	else
+		print_ok
+	fi
+
+	print_check "synack backup"
+	count=$(mptcp_lib_get_counter ${ns2} "MPTcpExtMPJoinSynAckBackupRx")
+	if [ -z "$count" ]; then
+		print_skip
+	elif [ "$count" != "$mpj_syn_ack" ]; then
+		fail_test "got $count JOIN[s] synack with Backup expected $mpj_syn_ack"
+	else
+		print_ok
+	fi
 }
 
 chk_subflow_nr()
@@ -1955,6 +1989,21 @@ signal_address_tests()
 		chk_add_nr 1 1
 	fi
 
+	# uncommon: subflow and signal flags on the same endpoint
+	# or because the user wrongly picked both, but still expects the client
+	# to create additional subflows
+	if reset "subflow and signal together"; then
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_set_limits $ns2 0 2
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags signal,subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr 1 1 1
+		chk_add_nr 1 1 0 invert  # only initiated by ns2
+		chk_add_nr 0 0 0         # none initiated by ns1
+		chk_rst_nr 0 0 invert    # no RST sent by the client
+		chk_rst_nr 0 0           # no RST sent by the server
+	fi
+
 	# accept and use add_addr with additional subflows
 	if reset "multiple subflows and signal"; then
 		pm_nl_set_limits $ns1 0 3
@@ -2612,33 +2661,46 @@ backup_tests()
 		sflags=nobackup speed=slow \
 			run_tests $ns1 $ns2 10.0.1.1
 		chk_join_nr 1 1 1
-		chk_prio_nr 0 1
+		chk_prio_nr 0 1 1 0
 	fi
 
 	# single address, backup
 	if reset "single address, backup" &&
 	   continue_if mptcp_lib_kallsyms_has "subflow_rebuild_header$"; then
 		pm_nl_set_limits $ns1 0 1
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal,backup
+		pm_nl_set_limits $ns2 1 1
+		sflags=nobackup speed=slow \
+			run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr 1 1 1
+		chk_add_nr 1 1
+		chk_prio_nr 1 0 0 1
+	fi
+
+	# single address, switch to backup
+	if reset "single address, switch to backup" &&
+	   continue_if mptcp_lib_kallsyms_has "subflow_rebuild_header$"; then
+		pm_nl_set_limits $ns1 0 1
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		pm_nl_set_limits $ns2 1 1
 		sflags=backup speed=slow \
 			run_tests $ns1 $ns2 10.0.1.1
 		chk_join_nr 1 1 1
 		chk_add_nr 1 1
-		chk_prio_nr 1 1
+		chk_prio_nr 1 1 0 0
 	fi
 
 	# single address with port, backup
 	if reset "single address with port, backup" &&
 	   continue_if mptcp_lib_kallsyms_has "subflow_rebuild_header$"; then
 		pm_nl_set_limits $ns1 0 1
-		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal,backup port 10100
 		pm_nl_set_limits $ns2 1 1
-		sflags=backup speed=slow \
+		sflags=nobackup speed=slow \
 			run_tests $ns1 $ns2 10.0.1.1
 		chk_join_nr 1 1 1
 		chk_add_nr 1 1
-		chk_prio_nr 1 1
+		chk_prio_nr 1 0 0 1
 	fi
 
 	if reset "mpc backup" &&
@@ -2647,17 +2709,26 @@ backup_tests()
 		speed=slow \
 			run_tests $ns1 $ns2 10.0.1.1
 		chk_join_nr 0 0 0
-		chk_prio_nr 0 1
+		chk_prio_nr 0 1 0 0
 	fi
 
 	if reset "mpc backup both sides" &&
 	   continue_if mptcp_lib_kallsyms_doesnt_have "T mptcp_subflow_send_ack$"; then
-		pm_nl_add_endpoint $ns1 10.0.1.1 flags subflow,backup
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_set_limits $ns2 1 2
+		pm_nl_add_endpoint $ns1 10.0.1.1 flags signal,backup
 		pm_nl_add_endpoint $ns2 10.0.1.2 flags subflow,backup
+
+		# 10.0.2.2 (non-backup) -> 10.0.1.1 (backup)
+		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
+		# 10.0.1.2 (backup) -> 10.0.2.1 (non-backup)
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		ip -net "$ns2" route add 10.0.2.1 via 10.0.1.1 dev ns2eth1 # force this path
+
 		speed=slow \
 			run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr 0 0 0
-		chk_prio_nr 1 1
+		chk_join_nr 2 2 2
+		chk_prio_nr 1 1 1 1
 	fi
 
 	if reset "mpc switch to backup" &&
@@ -2666,7 +2737,7 @@ backup_tests()
 		sflags=backup speed=slow \
 			run_tests $ns1 $ns2 10.0.1.1
 		chk_join_nr 0 0 0
-		chk_prio_nr 0 1
+		chk_prio_nr 0 1 0 0
 	fi
 
 	if reset "mpc switch to backup both sides" &&
@@ -2676,7 +2747,7 @@ backup_tests()
 		sflags=backup speed=slow \
 			run_tests $ns1 $ns2 10.0.1.1
 		chk_join_nr 0 0 0
-		chk_prio_nr 1 1
+		chk_prio_nr 1 1 0 0
 	fi
 }
 
@@ -3053,7 +3124,7 @@ fullmesh_tests()
 		addr_nr_ns2=1 sflags=backup,fullmesh speed=slow \
 			run_tests $ns1 $ns2 10.0.1.1
 		chk_join_nr 2 2 2
-		chk_prio_nr 0 1
+		chk_prio_nr 0 1 1 0
 		chk_rm_nr 0 1
 	fi
 
@@ -3066,7 +3137,7 @@ fullmesh_tests()
 		sflags=nobackup,nofullmesh speed=slow \
 			run_tests $ns1 $ns2 10.0.1.1
 		chk_join_nr 2 2 2
-		chk_prio_nr 0 1
+		chk_prio_nr 0 1 1 0
 		chk_rm_nr 0 1
 	fi
 }
@@ -3318,7 +3389,7 @@ userspace_tests()
 		sflags=backup speed=slow \
 			run_tests $ns1 $ns2 10.0.1.1
 		chk_join_nr 1 1 0
-		chk_prio_nr 0 0
+		chk_prio_nr 0 0 0 0
 	fi
 
 	# userspace pm type prevents rm_addr
@@ -3526,6 +3597,35 @@ endpoint_tests()
 		chk_mptcp_info subflows 1 subflows 1
 		mptcp_lib_kill_wait $tests_pid
 	fi
+
+	# remove and re-add
+	if reset "delete re-add signal" &&
+	   mptcp_lib_kallsyms_has "subflow_rebuild_header$"; then
+		pm_nl_set_limits $ns1 1 1
+		pm_nl_set_limits $ns2 1 1
+		pm_nl_add_endpoint $ns1 10.0.2.1 id 1 flags signal
+		test_linkfail=4 speed=20 \
+			run_tests $ns1 $ns2 10.0.1.1 &
+		local tests_pid=$!
+
+		wait_mpj $ns2
+		pm_nl_check_endpoint "creation" \
+			$ns1 10.0.2.1 id 1 flags signal
+		chk_subflow_nr "before delete" 2
+		chk_mptcp_info subflows 1 subflows 1
+
+		pm_nl_del_endpoint $ns1 1 10.0.2.1
+		sleep 0.5
+		chk_subflow_nr "after delete" 1
+		chk_mptcp_info subflows 0 subflows 0
+
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		wait_mpj $ns2
+		chk_subflow_nr "after re-add" 2
+		chk_mptcp_info subflows 1 subflows 1
+		mptcp_lib_kill_wait $tests_pid
+	fi
+
 }
 
 # [$1: error message]
diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c
index e3f97f90d8db..8c3a73461475 100644
--- a/tools/testing/selftests/seccomp/seccomp_bpf.c
+++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
@@ -60,7 +60,9 @@
 #define SKIP(s, ...)	XFAIL(s, ##__VA_ARGS__)
 #endif
 
+#ifndef MIN
 #define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
+#endif
 
 #ifndef PR_SET_PTRACER
 # define PR_SET_PTRACER 0x59616d61