Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Alexei Starovoitov says:

====================
pull-request: bpf-next 2019-11-02

The following pull-request contains BPF updates for your *net-next* tree.

We've added 30 non-merge commits during the last 7 day(s) which contain
a total of 41 files changed, 1864 insertions(+), 474 deletions(-).

The main changes are:

1) Fix long standing user vs kernel access issue by introducing
   bpf_probe_read_user() and bpf_probe_read_kernel() helpers, from Daniel.

2) Accelerated xskmap lookup, from Björn and Maciej.

3) Support for automatic map pinning in libbpf, from Toke.

4) Cleanup of BTF-enabled raw tracepoints, from Alexei.

5) Various fixes to libbpf and selftests.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

21 files changed, 1010 insertions, 223 deletions

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 4af8b0819a32..df6809a76404 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -173,6 +173,7 @@ enum bpf_prog_type {
 	BPF_PROG_TYPE_CGROUP_SYSCTL,
 	BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE,
 	BPF_PROG_TYPE_CGROUP_SOCKOPT,
+	BPF_PROG_TYPE_TRACING,
 };
 
 enum bpf_attach_type {
@@ -199,6 +200,7 @@ enum bpf_attach_type {
 	BPF_CGROUP_UDP6_RECVMSG,
 	BPF_CGROUP_GETSOCKOPT,
 	BPF_CGROUP_SETSOCKOPT,
+	BPF_TRACE_RAW_TP,
 	__MAX_BPF_ATTACH_TYPE
 };
 
@@ -561,10 +563,13 @@ union bpf_attr {
  * 	Return
  * 		0 on success, or a negative error in case of failure.
  *
- * int bpf_probe_read(void *dst, u32 size, const void *src)
+ * int bpf_probe_read(void *dst, u32 size, const void *unsafe_ptr)
  * 	Description
  * 		For tracing programs, safely attempt to read *size* bytes from
- * 		address *src* and store the data in *dst*.
+ * 		kernel space address *unsafe_ptr* and store the data in *dst*.
+ *
+ * 		Generally, use bpf_probe_read_user() or bpf_probe_read_kernel()
+ * 		instead.
  * 	Return
  * 		0 on success, or a negative error in case of failure.
  *
@@ -1426,45 +1431,14 @@ union bpf_attr {
  * 	Return
  * 		0 on success, or a negative error in case of failure.
  *
- * int bpf_probe_read_str(void *dst, int size, const void *unsafe_ptr)
+ * int bpf_probe_read_str(void *dst, u32 size, const void *unsafe_ptr)
  * 	Description
- * 		Copy a NUL terminated string from an unsafe address
- * 		*unsafe_ptr* to *dst*. The *size* should include the
- * 		terminating NUL byte. In case the string length is smaller than
- * 		*size*, the target is not padded with further NUL bytes. If the
- * 		string length is larger than *size*, just *size*-1 bytes are
- * 		copied and the last byte is set to NUL.
- *
- * 		On success, the length of the copied string is returned. This
- * 		makes this helper useful in tracing programs for reading
- * 		strings, and more importantly to get its length at runtime. See
- * 		the following snippet:
- *
- * 		::
- *
- * 			SEC("kprobe/sys_open")
- * 			void bpf_sys_open(struct pt_regs *ctx)
- * 			{
- * 			        char buf[PATHLEN]; // PATHLEN is defined to 256
- * 			        int res = bpf_probe_read_str(buf, sizeof(buf),
- * 				                             ctx->di);
- *
- * 				// Consume buf, for example push it to
- * 				// userspace via bpf_perf_event_output(); we
- * 				// can use res (the string length) as event
- * 				// size, after checking its boundaries.
- * 			}
- *
- * 		In comparison, using **bpf_probe_read()** helper here instead
- * 		to read the string would require to estimate the length at
- * 		compile time, and would often result in copying more memory
- * 		than necessary.
+ * 		Copy a NUL terminated string from an unsafe kernel address
+ * 		*unsafe_ptr* to *dst*. See bpf_probe_read_kernel_str() for
+ * 		more details.
  *
- * 		Another useful use case is when parsing individual process
- * 		arguments or individual environment variables navigating
- * 		*current*\ **->mm->arg_start** and *current*\
- * 		**->mm->env_start**: using this helper and the return value,
- * 		one can quickly iterate at the right offset of the memory area.
+ * 		Generally, use bpf_probe_read_user_str() or bpf_probe_read_kernel_str()
+ * 		instead.
  * 	Return
  * 		On success, the strictly positive length of the string,
  * 		including the trailing NUL character. On error, a negative
@@ -2775,6 +2749,72 @@ union bpf_attr {
  * 		restricted to raw_tracepoint bpf programs.
  * 	Return
  * 		0 on success, or a negative error in case of failure.
+ *
+ * int bpf_probe_read_user(void *dst, u32 size, const void *unsafe_ptr)
+ * 	Description
+ * 		Safely attempt to read *size* bytes from user space address
+ * 		*unsafe_ptr* and store the data in *dst*.
+ * 	Return
+ * 		0 on success, or a negative error in case of failure.
+ *
+ * int bpf_probe_read_kernel(void *dst, u32 size, const void *unsafe_ptr)
+ * 	Description
+ * 		Safely attempt to read *size* bytes from kernel space address
+ * 		*unsafe_ptr* and store the data in *dst*.
+ * 	Return
+ * 		0 on success, or a negative error in case of failure.
+ *
+ * int bpf_probe_read_user_str(void *dst, u32 size, const void *unsafe_ptr)
+ * 	Description
+ * 		Copy a NUL terminated string from an unsafe user address
+ * 		*unsafe_ptr* to *dst*. The *size* should include the
+ * 		terminating NUL byte. In case the string length is smaller than
+ * 		*size*, the target is not padded with further NUL bytes. If the
+ * 		string length is larger than *size*, just *size*-1 bytes are
+ * 		copied and the last byte is set to NUL.
+ *
+ * 		On success, the length of the copied string is returned. This
+ * 		makes this helper useful in tracing programs for reading
+ * 		strings, and more importantly to get its length at runtime. See
+ * 		the following snippet:
+ *
+ * 		::
+ *
+ * 			SEC("kprobe/sys_open")
+ * 			void bpf_sys_open(struct pt_regs *ctx)
+ * 			{
+ * 			        char buf[PATHLEN]; // PATHLEN is defined to 256
+ * 			        int res = bpf_probe_read_user_str(buf, sizeof(buf),
+ * 				                                  ctx->di);
+ *
+ * 				// Consume buf, for example push it to
+ * 				// userspace via bpf_perf_event_output(); we
+ * 				// can use res (the string length) as event
+ * 				// size, after checking its boundaries.
+ * 			}
+ *
+ * 		In comparison, using **bpf_probe_read_user()** helper here
+ * 		instead to read the string would require to estimate the length
+ * 		at compile time, and would often result in copying more memory
+ * 		than necessary.
+ *
+ * 		Another useful use case is when parsing individual process
+ * 		arguments or individual environment variables navigating
+ * 		*current*\ **->mm->arg_start** and *current*\
+ * 		**->mm->env_start**: using this helper and the return value,
+ * 		one can quickly iterate at the right offset of the memory area.
+ * 	Return
+ * 		On success, the strictly positive length of the string,
+ * 		including the trailing NUL character. On error, a negative
+ * 		value.
+ *
+ * int bpf_probe_read_kernel_str(void *dst, u32 size, const void *unsafe_ptr)
+ * 	Description
+ * 		Copy a NUL terminated string from an unsafe kernel address *unsafe_ptr*
+ * 		to *dst*. Same semantics as with bpf_probe_read_user_str() apply.
+ * 	Return
+ * 		On success, the strictly positive length of the string,	including
+ * 		the trailing NUL character. On error, a negative value.
  */
 #define __BPF_FUNC_MAPPER(FN)		\
 	FN(unspec),			\
@@ -2888,7 +2928,11 @@ union bpf_attr {
 	FN(sk_storage_delete),		\
 	FN(send_signal),		\
 	FN(tcp_gen_syncookie),		\
-	FN(skb_output),
+	FN(skb_output),			\
+	FN(probe_read_user),		\
+	FN(probe_read_kernel),		\
+	FN(probe_read_user_str),	\
+	FN(probe_read_kernel_str),
 
 /* integer value in 'imm' field of BPF_CALL instruction selects which helper
  * function eBPF program intends to call
diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c
index 79046067720f..ca0d635b1d5e 100644
--- a/tools/lib/bpf/bpf.c
+++ b/tools/lib/bpf/bpf.c
@@ -228,9 +228,10 @@ int bpf_load_program_xattr(const struct bpf_load_program_attr *load_attr,
 	memset(&attr, 0, sizeof(attr));
 	attr.prog_type = load_attr->prog_type;
 	attr.expected_attach_type = load_attr->expected_attach_type;
-	if (attr.prog_type == BPF_PROG_TYPE_RAW_TRACEPOINT)
-		/* expected_attach_type is ignored for tracing progs */
-		attr.attach_btf_id = attr.expected_attach_type;
+	if (attr.prog_type == BPF_PROG_TYPE_TRACING)
+		attr.attach_btf_id = load_attr->attach_btf_id;
+	else
+		attr.prog_ifindex = load_attr->prog_ifindex;
 	attr.insn_cnt = (__u32)load_attr->insns_cnt;
 	attr.insns = ptr_to_u64(load_attr->insns);
 	attr.license = ptr_to_u64(load_attr->license);
@@ -245,7 +246,6 @@ int bpf_load_program_xattr(const struct bpf_load_program_attr *load_attr,
 	}
 
 	attr.kern_version = load_attr->kern_version;
-	attr.prog_ifindex = load_attr->prog_ifindex;
 	attr.prog_btf_fd = load_attr->prog_btf_fd;
 	attr.func_info_rec_size = load_attr->func_info_rec_size;
 	attr.func_info_cnt = load_attr->func_info_cnt;
diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h
index 0db01334740f..1c53bc5b4b3c 100644
--- a/tools/lib/bpf/bpf.h
+++ b/tools/lib/bpf/bpf.h
@@ -78,7 +78,10 @@ struct bpf_load_program_attr {
 	size_t insns_cnt;
 	const char *license;
 	__u32 kern_version;
-	__u32 prog_ifindex;
+	union {
+		__u32 prog_ifindex;
+		__u32 attach_btf_id;
+	};
 	__u32 prog_btf_fd;
 	__u32 func_info_rec_size;
 	const void *func_info;
diff --git a/tools/lib/bpf/bpf_helpers.h b/tools/lib/bpf/bpf_helpers.h
index 2203595f38c3..0c7d28292898 100644
--- a/tools/lib/bpf/bpf_helpers.h
+++ b/tools/lib/bpf/bpf_helpers.h
@@ -38,4 +38,10 @@ struct bpf_map_def {
 	unsigned int map_flags;
 };
 
+enum libbpf_pin_type {
+	LIBBPF_PIN_NONE,
+	/* PIN_BY_NAME: pin maps by name (in /sys/fs/bpf by default) */
+	LIBBPF_PIN_BY_NAME,
+};
+
 #endif
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index d71631a01926..7aa2a2a22cef 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -188,6 +188,7 @@ struct bpf_program {
 	bpf_program_clear_priv_t clear_priv;
 
 	enum bpf_attach_type expected_attach_type;
+	__u32 attach_btf_id;
 	void *func_info;
 	__u32 func_info_rec_size;
 	__u32 func_info_cnt;
@@ -226,6 +227,8 @@ struct bpf_map {
 	void *priv;
 	bpf_map_clear_priv_t clear_priv;
 	enum libbpf_map_type libbpf_type;
+	char *pin_path;
+	bool pinned;
 };
 
 struct bpf_secdata {
@@ -1090,10 +1093,32 @@ static bool get_map_field_int(const char *map_name, const struct btf *btf,
 	return true;
 }
 
+static int build_map_pin_path(struct bpf_map *map, const char *path)
+{
+	char buf[PATH_MAX];
+	int err, len;
+
+	if (!path)
+		path = "/sys/fs/bpf";
+
+	len = snprintf(buf, PATH_MAX, "%s/%s", path, bpf_map__name(map));
+	if (len < 0)
+		return -EINVAL;
+	else if (len >= PATH_MAX)
+		return -ENAMETOOLONG;
+
+	err = bpf_map__set_pin_path(map, buf);
+	if (err)
+		return err;
+
+	return 0;
+}
+
 static int bpf_object__init_user_btf_map(struct bpf_object *obj,
 					 const struct btf_type *sec,
 					 int var_idx, int sec_idx,
-					 const Elf_Data *data, bool strict)
+					 const Elf_Data *data, bool strict,
+					 const char *pin_root_path)
 {
 	const struct btf_type *var, *def, *t;
 	const struct btf_var_secinfo *vi;
@@ -1268,6 +1293,30 @@ static int bpf_object__init_user_btf_map(struct bpf_object *obj,
 			}
 			map->def.value_size = sz;
 			map->btf_value_type_id = t->type;
+		} else if (strcmp(name, "pinning") == 0) {
+			__u32 val;
+			int err;
+
+			if (!get_map_field_int(map_name, obj->btf, def, m,
+					       &val))
+				return -EINVAL;
+			pr_debug("map '%s': found pinning = %u.\n",
+				 map_name, val);
+
+			if (val != LIBBPF_PIN_NONE &&
+			    val != LIBBPF_PIN_BY_NAME) {
+				pr_warn("map '%s': invalid pinning value %u.\n",
+					map_name, val);
+				return -EINVAL;
+			}
+			if (val == LIBBPF_PIN_BY_NAME) {
+				err = build_map_pin_path(map, pin_root_path);
+				if (err) {
+					pr_warn("map '%s': couldn't build pin path.\n",
+						map_name);
+					return err;
+				}
+			}
 		} else {
 			if (strict) {
 				pr_warn("map '%s': unknown field '%s'.\n",
@@ -1287,7 +1336,8 @@ static int bpf_object__init_user_btf_map(struct bpf_object *obj,
 	return 0;
 }
 
-static int bpf_object__init_user_btf_maps(struct bpf_object *obj, bool strict)
+static int bpf_object__init_user_btf_maps(struct bpf_object *obj, bool strict,
+					  const char *pin_root_path)
 {
 	const struct btf_type *sec = NULL;
 	int nr_types, i, vlen, err;
@@ -1329,7 +1379,7 @@ static int bpf_object__init_user_btf_maps(struct bpf_object *obj, bool strict)
 	for (i = 0; i < vlen; i++) {
 		err = bpf_object__init_user_btf_map(obj, sec, i,
 						    obj->efile.btf_maps_shndx,
-						    data, strict);
+						    data, strict, pin_root_path);
 		if (err)
 			return err;
 	}
@@ -1337,7 +1387,8 @@ static int bpf_object__init_user_btf_maps(struct bpf_object *obj, bool strict)
 	return 0;
 }
 
-static int bpf_object__init_maps(struct bpf_object *obj, bool relaxed_maps)
+static int bpf_object__init_maps(struct bpf_object *obj, bool relaxed_maps,
+				 const char *pin_root_path)
 {
 	bool strict = !relaxed_maps;
 	int err;
@@ -1346,7 +1397,7 @@ static int bpf_object__init_maps(struct bpf_object *obj, bool relaxed_maps)
 	if (err)
 		return err;
 
-	err = bpf_object__init_user_btf_maps(obj, strict);
+	err = bpf_object__init_user_btf_maps(obj, strict, pin_root_path);
 	if (err)
 		return err;
 
@@ -1535,7 +1586,8 @@ static int bpf_object__sanitize_and_load_btf(struct bpf_object *obj)
 	return 0;
 }
 
-static int bpf_object__elf_collect(struct bpf_object *obj, bool relaxed_maps)
+static int bpf_object__elf_collect(struct bpf_object *obj, bool relaxed_maps,
+				   const char *pin_root_path)
 {
 	Elf *elf = obj->efile.elf;
 	GElf_Ehdr *ep = &obj->efile.ehdr;
@@ -1664,13 +1716,13 @@ static int bpf_object__elf_collect(struct bpf_object *obj, bool relaxed_maps)
 		}
 	}
 
-	if (!obj->efile.strtabidx || obj->efile.strtabidx >= idx) {
+	if (!obj->efile.strtabidx || obj->efile.strtabidx > idx) {
 		pr_warn("Corrupted ELF file: index of strtab invalid\n");
 		return -LIBBPF_ERRNO__FORMAT;
 	}
 	err = bpf_object__init_btf(obj, btf_data, btf_ext_data);
 	if (!err)
-		err = bpf_object__init_maps(obj, relaxed_maps);
+		err = bpf_object__init_maps(obj, relaxed_maps, pin_root_path);
 	if (!err)
 		err = bpf_object__sanitize_and_load_btf(obj);
 	if (!err)
@@ -1916,16 +1968,22 @@ int bpf_map__reuse_fd(struct bpf_map *map, int fd)
 		return -errno;
 
 	new_fd = open("/", O_RDONLY | O_CLOEXEC);
-	if (new_fd < 0)
+	if (new_fd < 0) {
+		err = -errno;
 		goto err_free_new_name;
+	}
 
 	new_fd = dup3(fd, new_fd, O_CLOEXEC);
-	if (new_fd < 0)
+	if (new_fd < 0) {
+		err = -errno;
 		goto err_close_new_fd;
+	}
 
 	err = zclose(map->fd);
-	if (err)
+	if (err) {
+		err = -errno;
 		goto err_close_new_fd;
+	}
 	free(map->name);
 
 	map->fd = new_fd;
@@ -1944,7 +2002,7 @@ err_close_new_fd:
 	close(new_fd);
 err_free_new_name:
 	free(new_name);
-	return -errno;
+	return err;
 }
 
 int bpf_map__resize(struct bpf_map *map, __u32 max_entries)
@@ -2120,6 +2178,66 @@ bpf_object__probe_caps(struct bpf_object *obj)
 	return 0;
 }
 
+static bool map_is_reuse_compat(const struct bpf_map *map, int map_fd)
+{
+	struct bpf_map_info map_info = {};
+	char msg[STRERR_BUFSIZE];
+	__u32 map_info_len;
+
+	map_info_len = sizeof(map_info);
+
+	if (bpf_obj_get_info_by_fd(map_fd, &map_info, &map_info_len)) {
+		pr_warn("failed to get map info for map FD %d: %s\n",
+			map_fd, libbpf_strerror_r(errno, msg, sizeof(msg)));
+		return false;
+	}
+
+	return (map_info.type == map->def.type &&
+		map_info.key_size == map->def.key_size &&
+		map_info.value_size == map->def.value_size &&
+		map_info.max_entries == map->def.max_entries &&
+		map_info.map_flags == map->def.map_flags);
+}
+
+static int
+bpf_object__reuse_map(struct bpf_map *map)
+{
+	char *cp, errmsg[STRERR_BUFSIZE];
+	int err, pin_fd;
+
+	pin_fd = bpf_obj_get(map->pin_path);
+	if (pin_fd < 0) {
+		err = -errno;
+		if (err == -ENOENT) {
+			pr_debug("found no pinned map to reuse at '%s'\n",
+				 map->pin_path);
+			return 0;
+		}
+
+		cp = libbpf_strerror_r(-err, errmsg, sizeof(errmsg));
+		pr_warn("couldn't retrieve pinned map '%s': %s\n",
+			map->pin_path, cp);
+		return err;
+	}
+
+	if (!map_is_reuse_compat(map, pin_fd)) {
+		pr_warn("couldn't reuse pinned map at '%s': parameter mismatch\n",
+			map->pin_path);
+		close(pin_fd);
+		return -EINVAL;
+	}
+
+	err = bpf_map__reuse_fd(map, pin_fd);
+	if (err) {
+		close(pin_fd);
+		return err;
+	}
+	map->pinned = true;
+	pr_debug("reused pinned map at '%s'\n", map->pin_path);
+
+	return 0;
+}
+
 static int
 bpf_object__populate_internal_map(struct bpf_object *obj, struct bpf_map *map)
 {
@@ -2162,6 +2280,15 @@ bpf_object__create_maps(struct bpf_object *obj)
 		char *cp, errmsg[STRERR_BUFSIZE];
 		int *pfd = &map->fd;
 
+		if (map->pin_path) {
+			err = bpf_object__reuse_map(map);
+			if (err) {
+				pr_warn("error reusing pinned map %s\n",
+					map->name);
+				return err;
+			}
+		}
+
 		if (map->fd >= 0) {
 			pr_debug("skip map create (preset) %s: fd=%d\n",
 				 map->name, map->fd);
@@ -2240,6 +2367,15 @@ err_out:
 			}
 		}
 
+		if (map->pin_path && !map->pinned) {
+			err = bpf_map__pin(map, NULL);
+			if (err) {
+				pr_warn("failed to auto-pin map name '%s' at '%s'\n",
+					map->name, map->pin_path);
+				return err;
+			}
+		}
+
 		pr_debug("created map %s: fd=%d\n", map->name, *pfd);
 	}
 
@@ -3446,6 +3582,7 @@ load_program(struct bpf_program *prog, struct bpf_insn *insns, int insns_cnt,
 	load_attr.line_info_cnt = prog->line_info_cnt;
 	load_attr.log_level = prog->log_level;
 	load_attr.prog_flags = prog->prog_flags;
+	load_attr.attach_btf_id = prog->attach_btf_id;
 
 retry_load:
 	log_buf = malloc(log_buf_size);
@@ -3607,10 +3744,13 @@ bpf_object__load_progs(struct bpf_object *obj, int log_level)
 	return 0;
 }
 
+static int libbpf_attach_btf_id_by_name(const char *name, __u32 *btf_id);
+
 static struct bpf_object *
 __bpf_object__open(const char *path, const void *obj_buf, size_t obj_buf_sz,
 		   struct bpf_object_open_opts *opts)
 {
+	const char *pin_root_path;
 	struct bpf_program *prog;
 	struct bpf_object *obj;
 	const char *obj_name;
@@ -3645,17 +3785,20 @@ __bpf_object__open(const char *path, const void *obj_buf, size_t obj_buf_sz,
 
 	obj->relaxed_core_relocs = OPTS_GET(opts, relaxed_core_relocs, false);
 	relaxed_maps = OPTS_GET(opts, relaxed_maps, false);
+	pin_root_path = OPTS_GET(opts, pin_root_path, NULL);
 
 	CHECK_ERR(bpf_object__elf_init(obj), err, out);
 	CHECK_ERR(bpf_object__check_endianness(obj), err, out);
 	CHECK_ERR(bpf_object__probe_caps(obj), err, out);
-	CHECK_ERR(bpf_object__elf_collect(obj, relaxed_maps), err, out);
+	CHECK_ERR(bpf_object__elf_collect(obj, relaxed_maps, pin_root_path),
+		  err, out);
 	CHECK_ERR(bpf_object__collect_reloc(obj), err, out);
 	bpf_object__elf_finish(obj);
 
 	bpf_object__for_each_program(prog, obj) {
 		enum bpf_prog_type prog_type;
 		enum bpf_attach_type attach_type;
+		__u32 btf_id;
 
 		err = libbpf_prog_type_by_name(prog->section_name, &prog_type,
 					       &attach_type);
@@ -3667,6 +3810,12 @@ __bpf_object__open(const char *path, const void *obj_buf, size_t obj_buf_sz,
 
 		bpf_program__set_type(prog, prog_type);
 		bpf_program__set_expected_attach_type(prog, attach_type);
+		if (prog_type == BPF_PROG_TYPE_TRACING) {
+			err = libbpf_attach_btf_id_by_name(prog->section_name, &btf_id);
+			if (err)
+				goto out;
+			prog->attach_btf_id = btf_id;
+		}
 	}
 
 	return obj;
@@ -3797,6 +3946,28 @@ int bpf_object__load(struct bpf_object *obj)
 	return bpf_object__load_xattr(&attr);
 }
 
+static int make_parent_dir(const char *path)
+{
+	char *cp, errmsg[STRERR_BUFSIZE];
+	char *dname, *dir;
+	int err = 0;
+
+	dname = strdup(path);
+	if (dname == NULL)
+		return -ENOMEM;
+
+	dir = dirname(dname);
+	if (mkdir(dir, 0700) && errno != EEXIST)
+		err = -errno;
+
+	free(dname);
+	if (err) {
+		cp = libbpf_strerror_r(-err, errmsg, sizeof(errmsg));
+		pr_warn("failed to mkdir %s: %s\n", path, cp);
+	}
+	return err;
+}
+
 static int check_path(const char *path)
 {
 	char *cp, errmsg[STRERR_BUFSIZE];
@@ -3833,6 +4004,10 @@ int bpf_program__pin_instance(struct bpf_program *prog, const char *path,
 	char *cp, errmsg[STRERR_BUFSIZE];
 	int err;
 
+	err = make_parent_dir(path);
+	if (err)
+		return err;
+
 	err = check_path(path);
 	if (err)
 		return err;
@@ -3886,25 +4061,14 @@ int bpf_program__unpin_instance(struct bpf_program *prog, const char *path,
 	return 0;
 }
 
-static int make_dir(const char *path)
-{
-	char *cp, errmsg[STRERR_BUFSIZE];
-	int err = 0;
-
-	if (mkdir(path, 0700) && errno != EEXIST)
-		err = -errno;
-
-	if (err) {
-		cp = libbpf_strerror_r(-err, errmsg, sizeof(errmsg));
-		pr_warn("failed to mkdir %s: %s\n", path, cp);
-	}
-	return err;
-}
-
 int bpf_program__pin(struct bpf_program *prog, const char *path)
 {
 	int i, err;
 
+	err = make_parent_dir(path);
+	if (err)
+		return err;
+
 	err = check_path(path);
 	if (err)
 		return err;
@@ -3925,10 +4089,6 @@ int bpf_program__pin(struct bpf_program *prog, const char *path)
 		return bpf_program__pin_instance(prog, path, 0);
 	}
 
-	err = make_dir(path);
-	if (err)
-		return err;
-
 	for (i = 0; i < prog->instances.nr; i++) {
 		char buf[PATH_MAX];
 		int len;
@@ -4019,47 +4179,123 @@ int bpf_map__pin(struct bpf_map *map, const char *path)
 	char *cp, errmsg[STRERR_BUFSIZE];
 	int err;
 
-	err = check_path(path);
-	if (err)
-		return err;
-
 	if (map == NULL) {
 		pr_warn("invalid map pointer\n");
 		return -EINVAL;
 	}
 
-	if (bpf_obj_pin(map->fd, path)) {
-		cp = libbpf_strerror_r(errno, errmsg, sizeof(errmsg));
-		pr_warn("failed to pin map: %s\n", cp);
-		return -errno;
+	if (map->pin_path) {
+		if (path && strcmp(path, map->pin_path)) {
+			pr_warn("map '%s' already has pin path '%s' different from '%s'\n",
+				bpf_map__name(map), map->pin_path, path);
+			return -EINVAL;
+		} else if (map->pinned) {
+			pr_debug("map '%s' already pinned at '%s'; not re-pinning\n",
+				 bpf_map__name(map), map->pin_path);
+			return 0;
+		}
+	} else {
+		if (!path) {
+			pr_warn("missing a path to pin map '%s' at\n",
+				bpf_map__name(map));
+			return -EINVAL;
+		} else if (map->pinned) {
+			pr_warn("map '%s' already pinned\n", bpf_map__name(map));
+			return -EEXIST;
+		}
+
+		map->pin_path = strdup(path);
+		if (!map->pin_path) {
+			err = -errno;
+			goto out_err;
+		}
+	}
+
+	err = make_parent_dir(map->pin_path);
+	if (err)
+		return err;
+
+	err = check_path(map->pin_path);
+	if (err)
+		return err;
+
+	if (bpf_obj_pin(map->fd, map->pin_path)) {
+		err = -errno;
+		goto out_err;
 	}
 
-	pr_debug("pinned map '%s'\n", path);
+	map->pinned = true;
+	pr_debug("pinned map '%s'\n", map->pin_path);
 
 	return 0;
+
+out_err:
+	cp = libbpf_strerror_r(-err, errmsg, sizeof(errmsg));
+	pr_warn("failed to pin map: %s\n", cp);
+	return err;
 }
 
 int bpf_map__unpin(struct bpf_map *map, const char *path)
 {
 	int err;
 
-	err = check_path(path);
-	if (err)
-		return err;
-
 	if (map == NULL) {
 		pr_warn("invalid map pointer\n");
 		return -EINVAL;
 	}
 
+	if (map->pin_path) {
+		if (path && strcmp(path, map->pin_path)) {
+			pr_warn("map '%s' already has pin path '%s' different from '%s'\n",
+				bpf_map__name(map), map->pin_path, path);
+			return -EINVAL;
+		}
+		path = map->pin_path;
+	} else if (!path) {
+		pr_warn("no path to unpin map '%s' from\n",
+			bpf_map__name(map));
+		return -EINVAL;
+	}
+
+	err = check_path(path);
+	if (err)
+		return err;
+
 	err = unlink(path);
 	if (err != 0)
 		return -errno;
-	pr_debug("unpinned map '%s'\n", path);
+
+	map->pinned = false;
+	pr_debug("unpinned map '%s' from '%s'\n", bpf_map__name(map), path);
 
 	return 0;
 }
 
+int bpf_map__set_pin_path(struct bpf_map *map, const char *path)
+{
+	char *new = NULL;
+
+	if (path) {
+		new = strdup(path);
+		if (!new)
+			return -errno;
+	}
+
+	free(map->pin_path);
+	map->pin_path = new;
+	return 0;
+}
+
+const char *bpf_map__get_pin_path(const struct bpf_map *map)
+{
+	return map->pin_path;
+}
+
+bool bpf_map__is_pinned(const struct bpf_map *map)
+{
+	return map->pinned;
+}
+
 int bpf_object__pin_maps(struct bpf_object *obj, const char *path)
 {
 	struct bpf_map *map;
@@ -4073,25 +4309,28 @@ int bpf_object__pin_maps(struct bpf_object *obj, const char *path)
 		return -ENOENT;
 	}
 
-	err = make_dir(path);
-	if (err)
-		return err;
-
 	bpf_object__for_each_map(map, obj) {
+		char *pin_path = NULL;
 		char buf[PATH_MAX];
-		int len;
 
-		len = snprintf(buf, PATH_MAX, "%s/%s", path,
-			       bpf_map__name(map));
-		if (len < 0) {
-			err = -EINVAL;
-			goto err_unpin_maps;
-		} else if (len >= PATH_MAX) {
-			err = -ENAMETOOLONG;
-			goto err_unpin_maps;
+		if (path) {
+			int len;
+
+			len = snprintf(buf, PATH_MAX, "%s/%s", path,
+				       bpf_map__name(map));
+			if (len < 0) {
+				err = -EINVAL;
+				goto err_unpin_maps;
+			} else if (len >= PATH_MAX) {
+				err = -ENAMETOOLONG;
+				goto err_unpin_maps;
+			}
+			pin_path = buf;
+		} else if (!map->pin_path) {
+			continue;
 		}
 
-		err = bpf_map__pin(map, buf);
+		err = bpf_map__pin(map, pin_path);
 		if (err)
 			goto err_unpin_maps;
 	}
@@ -4100,17 +4339,10 @@ int bpf_object__pin_maps(struct bpf_object *obj, const char *path)
 
 err_unpin_maps:
 	while ((map = bpf_map__prev(map, obj))) {
-		char buf[PATH_MAX];
-		int len;
-
-		len = snprintf(buf, PATH_MAX, "%s/%s", path,
-			       bpf_map__name(map));
-		if (len < 0)
-			continue;
-		else if (len >= PATH_MAX)
+		if (!map->pin_path)
 			continue;
 
-		bpf_map__unpin(map, buf);
+		bpf_map__unpin(map, NULL);
 	}
 
 	return err;
@@ -4125,17 +4357,24 @@ int bpf_object__unpin_maps(struct bpf_object *obj, const char *path)
 		return -ENOENT;
 
 	bpf_object__for_each_map(map, obj) {
+		char *pin_path = NULL;
 		char buf[PATH_MAX];
-		int len;
 
-		len = snprintf(buf, PATH_MAX, "%s/%s", path,
-			       bpf_map__name(map));
-		if (len < 0)
-			return -EINVAL;
-		else if (len >= PATH_MAX)
-			return -ENAMETOOLONG;
+		if (path) {
+			int len;
+
+			len = snprintf(buf, PATH_MAX, "%s/%s", path,
+				       bpf_map__name(map));
+			if (len < 0)
+				return -EINVAL;
+			else if (len >= PATH_MAX)
+				return -ENAMETOOLONG;
+			pin_path = buf;
+		} else if (!map->pin_path) {
+			continue;
+		}
 
-		err = bpf_map__unpin(map, buf);
+		err = bpf_map__unpin(map, pin_path);
 		if (err)
 			return err;
 	}
@@ -4156,10 +4395,6 @@ int bpf_object__pin_programs(struct bpf_object *obj, const char *path)
 		return -ENOENT;
 	}
 
-	err = make_dir(path);
-	if (err)
-		return err;
-
 	bpf_object__for_each_program(prog, obj) {
 		char buf[PATH_MAX];
 		int len;
@@ -4260,6 +4495,7 @@ void bpf_object__close(struct bpf_object *obj)
 
 	for (i = 0; i < obj->nr_maps; i++) {
 		zfree(&obj->maps[i].name);
+		zfree(&obj->maps[i].pin_path);
 		if (obj->maps[i].clear_priv)
 			obj->maps[i].clear_priv(&obj->maps[i],
 						obj->maps[i].priv);
@@ -4518,6 +4754,7 @@ BPF_PROG_TYPE_FNS(tracepoint, BPF_PROG_TYPE_TRACEPOINT);
 BPF_PROG_TYPE_FNS(raw_tracepoint, BPF_PROG_TYPE_RAW_TRACEPOINT);
 BPF_PROG_TYPE_FNS(xdp, BPF_PROG_TYPE_XDP);
 BPF_PROG_TYPE_FNS(perf_event, BPF_PROG_TYPE_PERF_EVENT);
+BPF_PROG_TYPE_FNS(tracing, BPF_PROG_TYPE_TRACING);
 
 enum bpf_attach_type
 bpf_program__get_expected_attach_type(struct bpf_program *prog)
@@ -4546,7 +4783,8 @@ void bpf_program__set_expected_attach_type(struct bpf_program *prog,
 	BPF_PROG_SEC_IMPL(string, ptype, eatype, 1, 0, eatype)
 
 /* Programs that use BTF to identify attach point */
-#define BPF_PROG_BTF(string, ptype) BPF_PROG_SEC_IMPL(string, ptype, 0, 0, 1, 0)
+#define BPF_PROG_BTF(string, ptype, eatype) \
+	BPF_PROG_SEC_IMPL(string, ptype, eatype, 0, 1, 0)
 
 /* Programs that can be attached but attach type can't be identified by section
  * name. Kept for backward compatibility.
@@ -4573,7 +4811,8 @@ static const struct {
 	BPF_PROG_SEC("tp/",			BPF_PROG_TYPE_TRACEPOINT),
 	BPF_PROG_SEC("raw_tracepoint/",		BPF_PROG_TYPE_RAW_TRACEPOINT),
 	BPF_PROG_SEC("raw_tp/",			BPF_PROG_TYPE_RAW_TRACEPOINT),
-	BPF_PROG_BTF("tp_btf/",			BPF_PROG_TYPE_RAW_TRACEPOINT),
+	BPF_PROG_BTF("tp_btf/",			BPF_PROG_TYPE_TRACING,
+						BPF_TRACE_RAW_TP),
 	BPF_PROG_SEC("xdp",			BPF_PROG_TYPE_XDP),
 	BPF_PROG_SEC("perf_event",		BPF_PROG_TYPE_PERF_EVENT),
 	BPF_PROG_SEC("lwt_in",			BPF_PROG_TYPE_LWT_IN),
@@ -4678,27 +4917,6 @@ int libbpf_prog_type_by_name(const char *name, enum bpf_prog_type *prog_type,
 			continue;
 		*prog_type = section_names[i].prog_type;
 		*expected_attach_type = section_names[i].expected_attach_type;
-		if (section_names[i].is_attach_btf) {
-			struct btf *btf = bpf_core_find_kernel_btf();
-			char raw_tp_btf_name[128] = "btf_trace_";
-			char *dst = raw_tp_btf_name + sizeof("btf_trace_") - 1;
-			int ret;
-
-			if (IS_ERR(btf)) {
-				pr_warn("vmlinux BTF is not found\n");
-				return -EINVAL;
-			}
-			/* prepend "btf_trace_" prefix per kernel convention */
-			strncat(dst, name + section_names[i].len,
-				sizeof(raw_tp_btf_name) - sizeof("btf_trace_"));
-			ret = btf__find_by_name(btf, raw_tp_btf_name);
-			btf__free(btf);
-			if (ret <= 0) {
-				pr_warn("%s is not found in vmlinux BTF\n", dst);
-				return -EINVAL;
-			}
-			*expected_attach_type = ret;
-		}
 		return 0;
 	}
 	pr_warn("failed to guess program type based on ELF section name '%s'\n", name);
@@ -4711,6 +4929,46 @@ int libbpf_prog_type_by_name(const char *name, enum bpf_prog_type *prog_type,
 	return -ESRCH;
 }
 
+#define BTF_PREFIX "btf_trace_"
+static int libbpf_attach_btf_id_by_name(const char *name, __u32 *btf_id)
+{
+	struct btf *btf = bpf_core_find_kernel_btf();
+	char raw_tp_btf_name[128] = BTF_PREFIX;
+	char *dst = raw_tp_btf_name + sizeof(BTF_PREFIX) - 1;
+	int ret, i, err = -EINVAL;
+
+	if (IS_ERR(btf)) {
+		pr_warn("vmlinux BTF is not found\n");
+		return -EINVAL;
+	}
+
+	if (!name)
+		goto out;
+
+	for (i = 0; i < ARRAY_SIZE(section_names); i++) {
+		if (!section_names[i].is_attach_btf)
+			continue;
+		if (strncmp(name, section_names[i].sec, section_names[i].len))
+			continue;
+		/* prepend "btf_trace_" prefix per kernel convention */
+		strncat(dst, name + section_names[i].len,
+			sizeof(raw_tp_btf_name) - sizeof(BTF_PREFIX));
+		ret = btf__find_by_name(btf, raw_tp_btf_name);
+		if (ret <= 0) {
+			pr_warn("%s is not found in vmlinux BTF\n", dst);
+			goto out;
+		}
+		*btf_id = ret;
+		err = 0;
+		goto out;
+	}
+	pr_warn("failed to identify btf_id based on ELF section name '%s'\n", name);
+	err = -ESRCH;
+out:
+	btf__free(btf);
+	return err;
+}
+
 int libbpf_attach_type_by_name(const char *name,
 			       enum bpf_attach_type *attach_type)
 {
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
index c63e2ff84abc..6ddc0419337b 100644
--- a/tools/lib/bpf/libbpf.h
+++ b/tools/lib/bpf/libbpf.h
@@ -103,8 +103,13 @@ struct bpf_object_open_opts {
 	bool relaxed_maps;
 	/* process CO-RE relocations non-strictly, allowing them to fail */
 	bool relaxed_core_relocs;
+	/* maps that set the 'pinning' attribute in their definition will have
+	 * their pin_path attribute set to a file in this directory, and be
+	 * auto-pinned to that path on load; defaults to "/sys/fs/bpf".
+	 */
+	const char *pin_root_path;
 };
-#define bpf_object_open_opts__last_field relaxed_core_relocs
+#define bpf_object_open_opts__last_field pin_root_path
 
 LIBBPF_API struct bpf_object *bpf_object__open(const char *path);
 LIBBPF_API struct bpf_object *
@@ -124,6 +129,17 @@ int bpf_object__section_size(const struct bpf_object *obj, const char *name,
 			     __u32 *size);
 int bpf_object__variable_offset(const struct bpf_object *obj, const char *name,
 				__u32 *off);
+
+enum libbpf_pin_type {
+	LIBBPF_PIN_NONE,
+	/* PIN_BY_NAME: pin maps by name (in /sys/fs/bpf by default) */
+	LIBBPF_PIN_BY_NAME,
+};
+
+/* pin_maps and unpin_maps can both be called with a NULL path, in which case
+ * they will use the pin_path attribute of each map (and ignore all maps that
+ * don't have a pin_path set).
+ */
 LIBBPF_API int bpf_object__pin_maps(struct bpf_object *obj, const char *path);
 LIBBPF_API int bpf_object__unpin_maps(struct bpf_object *obj,
 				      const char *path);
@@ -307,6 +323,7 @@ LIBBPF_API int bpf_program__set_sched_cls(struct bpf_program *prog);
 LIBBPF_API int bpf_program__set_sched_act(struct bpf_program *prog);
 LIBBPF_API int bpf_program__set_xdp(struct bpf_program *prog);
 LIBBPF_API int bpf_program__set_perf_event(struct bpf_program *prog);
+LIBBPF_API int bpf_program__set_tracing(struct bpf_program *prog);
 
 LIBBPF_API enum bpf_prog_type bpf_program__get_type(struct bpf_program *prog);
 LIBBPF_API void bpf_program__set_type(struct bpf_program *prog,
@@ -326,6 +343,7 @@ LIBBPF_API bool bpf_program__is_sched_cls(const struct bpf_program *prog);
 LIBBPF_API bool bpf_program__is_sched_act(const struct bpf_program *prog);
 LIBBPF_API bool bpf_program__is_xdp(const struct bpf_program *prog);
 LIBBPF_API bool bpf_program__is_perf_event(const struct bpf_program *prog);
+LIBBPF_API bool bpf_program__is_tracing(const struct bpf_program *prog);
 
 /*
  * No need for __attribute__((packed)), all members of 'bpf_map_def'
@@ -385,6 +403,9 @@ LIBBPF_API int bpf_map__resize(struct bpf_map *map, __u32 max_entries);
 LIBBPF_API bool bpf_map__is_offload_neutral(const struct bpf_map *map);
 LIBBPF_API bool bpf_map__is_internal(const struct bpf_map *map);
 LIBBPF_API void bpf_map__set_ifindex(struct bpf_map *map, __u32 ifindex);
+LIBBPF_API int bpf_map__set_pin_path(struct bpf_map *map, const char *path);
+LIBBPF_API const char *bpf_map__get_pin_path(const struct bpf_map *map);
+LIBBPF_API bool bpf_map__is_pinned(const struct bpf_map *map);
 LIBBPF_API int bpf_map__pin(struct bpf_map *map, const char *path);
 LIBBPF_API int bpf_map__unpin(struct bpf_map *map, const char *path);
 
diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map
index d1473ea4d7a5..86173cbb159d 100644
--- a/tools/lib/bpf/libbpf.map
+++ b/tools/lib/bpf/libbpf.map
@@ -193,8 +193,13 @@ LIBBPF_0.0.5 {
 
 LIBBPF_0.0.6 {
 	global:
+		bpf_map__get_pin_path;
+		bpf_map__is_pinned;
+		bpf_map__set_pin_path;
 		bpf_object__open_file;
 		bpf_object__open_mem;
 		bpf_program__get_expected_attach_type;
 		bpf_program__get_type;
+		bpf_program__is_tracing;
+		bpf_program__set_tracing;
 } LIBBPF_0.0.5;
diff --git a/tools/lib/bpf/libbpf_probes.c b/tools/lib/bpf/libbpf_probes.c
index 4b0b0364f5fc..a9eb8b322671 100644
--- a/tools/lib/bpf/libbpf_probes.c
+++ b/tools/lib/bpf/libbpf_probes.c
@@ -102,6 +102,7 @@ probe_load(enum bpf_prog_type prog_type, const struct bpf_insn *insns,
 	case BPF_PROG_TYPE_FLOW_DISSECTOR:
 	case BPF_PROG_TYPE_CGROUP_SYSCTL:
 	case BPF_PROG_TYPE_CGROUP_SOCKOPT:
+	case BPF_PROG_TYPE_TRACING:
 	default:
 		break;
 	}
diff --git a/tools/lib/bpf/xsk.c b/tools/lib/bpf/xsk.c
index 0b6287d1b15e..74d84f36a5b2 100644
--- a/tools/lib/bpf/xsk.c
+++ b/tools/lib/bpf/xsk.c
@@ -73,6 +73,21 @@ struct xsk_nl_info {
 	int fd;
 };
 
+/* Up until and including Linux 5.3 */
+struct xdp_ring_offset_v1 {
+	__u64 producer;
+	__u64 consumer;
+	__u64 desc;
+};
+
+/* Up until and including Linux 5.3 */
+struct xdp_mmap_offsets_v1 {
+	struct xdp_ring_offset_v1 rx;
+	struct xdp_ring_offset_v1 tx;
+	struct xdp_ring_offset_v1 fr;
+	struct xdp_ring_offset_v1 cr;
+};
+
 int xsk_umem__fd(const struct xsk_umem *umem)
 {
 	return umem ? umem->fd : -EINVAL;
@@ -133,6 +148,58 @@ static int xsk_set_xdp_socket_config(struct xsk_socket_config *cfg,
 	return 0;
 }
 
+static void xsk_mmap_offsets_v1(struct xdp_mmap_offsets *off)
+{
+	struct xdp_mmap_offsets_v1 off_v1;
+
+	/* getsockopt on a kernel <= 5.3 has no flags fields.
+	 * Copy over the offsets to the correct places in the >=5.4 format
+	 * and put the flags where they would have been on that kernel.
+	 */
+	memcpy(&off_v1, off, sizeof(off_v1));
+
+	off->rx.producer = off_v1.rx.producer;
+	off->rx.consumer = off_v1.rx.consumer;
+	off->rx.desc = off_v1.rx.desc;
+	off->rx.flags = off_v1.rx.consumer + sizeof(__u32);
+
+	off->tx.producer = off_v1.tx.producer;
+	off->tx.consumer = off_v1.tx.consumer;
+	off->tx.desc = off_v1.tx.desc;
+	off->tx.flags = off_v1.tx.consumer + sizeof(__u32);
+
+	off->fr.producer = off_v1.fr.producer;
+	off->fr.consumer = off_v1.fr.consumer;
+	off->fr.desc = off_v1.fr.desc;
+	off->fr.flags = off_v1.fr.consumer + sizeof(__u32);
+
+	off->cr.producer = off_v1.cr.producer;
+	off->cr.consumer = off_v1.cr.consumer;
+	off->cr.desc = off_v1.cr.desc;
+	off->cr.flags = off_v1.cr.consumer + sizeof(__u32);
+}
+
+static int xsk_get_mmap_offsets(int fd, struct xdp_mmap_offsets *off)
+{
+	socklen_t optlen;
+	int err;
+
+	optlen = sizeof(*off);
+	err = getsockopt(fd, SOL_XDP, XDP_MMAP_OFFSETS, off, &optlen);
+	if (err)
+		return err;
+
+	if (optlen == sizeof(*off))
+		return 0;
+
+	if (optlen == sizeof(struct xdp_mmap_offsets_v1)) {
+		xsk_mmap_offsets_v1(off);
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
 int xsk_umem__create_v0_0_4(struct xsk_umem **umem_ptr, void *umem_area,
 			    __u64 size, struct xsk_ring_prod *fill,
 			    struct xsk_ring_cons *comp,
@@ -141,7 +208,6 @@ int xsk_umem__create_v0_0_4(struct xsk_umem **umem_ptr, void *umem_area,
 	struct xdp_mmap_offsets off;
 	struct xdp_umem_reg mr;
 	struct xsk_umem *umem;
-	socklen_t optlen;
 	void *map;
 	int err;
 
@@ -190,8 +256,7 @@ int xsk_umem__create_v0_0_4(struct xsk_umem **umem_ptr, void *umem_area,
 		goto out_socket;
 	}
 
-	optlen = sizeof(off);
-	err = getsockopt(umem->fd, SOL_XDP, XDP_MMAP_OFFSETS, &off, &optlen);
+	err = xsk_get_mmap_offsets(umem->fd, &off);
 	if (err) {
 		err = -errno;
 		goto out_socket;
@@ -514,7 +579,6 @@ int xsk_socket__create(struct xsk_socket **xsk_ptr, const char *ifname,
 	struct sockaddr_xdp sxdp = {};
 	struct xdp_mmap_offsets off;
 	struct xsk_socket *xsk;
-	socklen_t optlen;
 	int err;
 
 	if (!umem || !xsk_ptr || !rx || !tx)
@@ -573,8 +637,7 @@ int xsk_socket__create(struct xsk_socket **xsk_ptr, const char *ifname,
 		}
 	}
 
-	optlen = sizeof(off);
-	err = getsockopt(xsk->fd, SOL_XDP, XDP_MMAP_OFFSETS, &off, &optlen);
+	err = xsk_get_mmap_offsets(xsk->fd, &off);
 	if (err) {
 		err = -errno;
 		goto out_socket;
@@ -660,7 +723,6 @@ out_xsk_alloc:
 int xsk_umem__delete(struct xsk_umem *umem)
 {
 	struct xdp_mmap_offsets off;
-	socklen_t optlen;
 	int err;
 
 	if (!umem)
@@ -669,8 +731,7 @@ int xsk_umem__delete(struct xsk_umem *umem)
 	if (umem->refcount)
 		return -EBUSY;
 
-	optlen = sizeof(off);
-	err = getsockopt(umem->fd, SOL_XDP, XDP_MMAP_OFFSETS, &off, &optlen);
+	err = xsk_get_mmap_offsets(umem->fd, &off);
 	if (!err) {
 		munmap(umem->fill->ring - off.fr.desc,
 		       off.fr.desc + umem->config.fill_size * sizeof(__u64));
@@ -688,7 +749,6 @@ void xsk_socket__delete(struct xsk_socket *xsk)
 {
 	size_t desc_sz = sizeof(struct xdp_desc);
 	struct xdp_mmap_offsets off;
-	socklen_t optlen;
 	int err;
 
 	if (!xsk)
@@ -699,8 +759,7 @@ void xsk_socket__delete(struct xsk_socket *xsk)
 		close(xsk->prog_fd);
 	}
 
-	optlen = sizeof(off);
-	err = getsockopt(xsk->fd, SOL_XDP, XDP_MMAP_OFFSETS, &off, &optlen);
+	err = xsk_get_mmap_offsets(xsk->fd, &off);
 	if (!err) {
 		if (xsk->rx) {
 			munmap(xsk->rx->ring - off.rx.desc,
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 933f39381039..b334a6db15c1 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -89,6 +89,9 @@ $(notdir $(TEST_GEN_PROGS)						\
 $(OUTPUT)/urandom_read: urandom_read.c
 	$(CC) -o $@ $< -Wl,--build-id
 
+$(OUTPUT)/test_stub.o: test_stub.c
+	$(CC) -c $(CFLAGS) -o $@ $<
+
 BPFOBJ := $(OUTPUT)/libbpf.a
 
 $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(BPFOBJ)
@@ -131,8 +134,13 @@ $(shell $(1) -v -E - </dev/null 2>&1 \
 	| sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }')
 endef
 
+# Determine target endianness.
+IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
+			grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
+MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
+
 CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
-BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) 				\
+BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) 			\
 	     -I. -I./include/uapi -I$(APIDIR)				\
 	     -I$(BPFDIR) -I$(abspath $(OUTPUT)/../usr/include)
 
@@ -271,12 +279,8 @@ $(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
 
 # Define test_progs BPF-GCC-flavored test runner.
 ifneq ($(BPF_GCC),)
-IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
-			grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
-MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
-
 TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
-TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc) $(MENDIAN)
+TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc)
 TRUNNER_BPF_LDFLAGS :=
 $(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
 endif
diff --git a/tools/testing/selftests/bpf/prog_tests/pinning.c b/tools/testing/selftests/bpf/prog_tests/pinning.c
new file mode 100644
index 000000000000..525388971e08
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/pinning.c
@@ -0,0 +1,210 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <test_progs.h>
+
+__u32 get_map_id(struct bpf_object *obj, const char *name)
+{
+	struct bpf_map_info map_info = {};
+	__u32 map_info_len, duration = 0;
+	struct bpf_map *map;
+	int err;
+
+	map_info_len = sizeof(map_info);
+
+	map = bpf_object__find_map_by_name(obj, name);
+	if (CHECK(!map, "find map", "NULL map"))
+		return 0;
+
+	err = bpf_obj_get_info_by_fd(bpf_map__fd(map),
+				     &map_info, &map_info_len);
+	CHECK(err, "get map info", "err %d errno %d", err, errno);
+	return map_info.id;
+}
+
+void test_pinning(void)
+{
+	const char *file_invalid = "./test_pinning_invalid.o";
+	const char *custpinpath = "/sys/fs/bpf/custom/pinmap";
+	const char *nopinpath = "/sys/fs/bpf/nopinmap";
+	const char *nopinpath2 = "/sys/fs/bpf/nopinmap2";
+	const char *custpath = "/sys/fs/bpf/custom";
+	const char *pinpath = "/sys/fs/bpf/pinmap";
+	const char *file = "./test_pinning.o";
+	__u32 map_id, map_id2, duration = 0;
+	struct stat statbuf = {};
+	struct bpf_object *obj;
+	struct bpf_map *map;
+	int err;
+	DECLARE_LIBBPF_OPTS(bpf_object_open_opts, opts,
+		.pin_root_path = custpath,
+	);
+
+	/* check that opening fails with invalid pinning value in map def */
+	obj = bpf_object__open_file(file_invalid, NULL);
+	err = libbpf_get_error(obj);
+	if (CHECK(err != -EINVAL, "invalid open", "err %d errno %d\n", err, errno)) {
+		obj = NULL;
+		goto out;
+	}
+
+	/* open the valid object file  */
+	obj = bpf_object__open_file(file, NULL);
+	err = libbpf_get_error(obj);
+	if (CHECK(err, "default open", "err %d errno %d\n", err, errno)) {
+		obj = NULL;
+		goto out;
+	}
+
+	err = bpf_object__load(obj);
+	if (CHECK(err, "default load", "err %d errno %d\n", err, errno))
+		goto out;
+
+	/* check that pinmap was pinned */
+	err = stat(pinpath, &statbuf);
+	if (CHECK(err, "stat pinpath", "err %d errno %d\n", err, errno))
+		goto out;
+
+	/* check that nopinmap was *not* pinned */
+	err = stat(nopinpath, &statbuf);
+	if (CHECK(!err || errno != ENOENT, "stat nopinpath",
+		  "err %d errno %d\n", err, errno))
+		goto out;
+
+	/* check that nopinmap2 was *not* pinned */
+	err = stat(nopinpath2, &statbuf);
+	if (CHECK(!err || errno != ENOENT, "stat nopinpath2",
+		  "err %d errno %d\n", err, errno))
+		goto out;
+
+	map_id = get_map_id(obj, "pinmap");
+	if (!map_id)
+		goto out;
+
+	bpf_object__close(obj);
+
+	obj = bpf_object__open_file(file, NULL);
+	if (CHECK_FAIL(libbpf_get_error(obj))) {
+		obj = NULL;
+		goto out;
+	}
+
+	err = bpf_object__load(obj);
+	if (CHECK(err, "default load", "err %d errno %d\n", err, errno))
+		goto out;
+
+	/* check that same map ID was reused for second load */
+	map_id2 = get_map_id(obj, "pinmap");
+	if (CHECK(map_id != map_id2, "check reuse",
+		  "err %d errno %d id %d id2 %d\n", err, errno, map_id, map_id2))
+		goto out;
+
+	/* should be no-op to re-pin same map */
+	map = bpf_object__find_map_by_name(obj, "pinmap");
+	if (CHECK(!map, "find map", "NULL map"))
+		goto out;
+
+	err = bpf_map__pin(map, NULL);
+	if (CHECK(err, "re-pin map", "err %d errno %d\n", err, errno))
+		goto out;
+
+	/* but error to pin at different location */
+	err = bpf_map__pin(map, "/sys/fs/bpf/other");
+	if (CHECK(!err, "pin map different", "err %d errno %d\n", err, errno))
+		goto out;
+
+	/* unpin maps with a pin_path set */
+	err = bpf_object__unpin_maps(obj, NULL);
+	if (CHECK(err, "unpin maps", "err %d errno %d\n", err, errno))
+		goto out;
+
+	/* and re-pin them... */
+	err = bpf_object__pin_maps(obj, NULL);
+	if (CHECK(err, "pin maps", "err %d errno %d\n", err, errno))
+		goto out;
+
+	/* set pinning path of other map and re-pin all */
+	map = bpf_object__find_map_by_name(obj, "nopinmap");
+	if (CHECK(!map, "find map", "NULL map"))
+		goto out;
+
+	err = bpf_map__set_pin_path(map, custpinpath);
+	if (CHECK(err, "set pin path", "err %d errno %d\n", err, errno))
+		goto out;
+
+	/* should only pin the one unpinned map */
+	err = bpf_object__pin_maps(obj, NULL);
+	if (CHECK(err, "pin maps", "err %d errno %d\n", err, errno))
+		goto out;
+
+	/* check that nopinmap was pinned at the custom path */
+	err = stat(custpinpath, &statbuf);
+	if (CHECK(err, "stat custpinpath", "err %d errno %d\n", err, errno))
+		goto out;
+
+	/* remove the custom pin path to re-test it with auto-pinning below */
+	err = unlink(custpinpath);
+	if (CHECK(err, "unlink custpinpath", "err %d errno %d\n", err, errno))
+		goto out;
+
+	err = rmdir(custpath);
+	if (CHECK(err, "rmdir custpindir", "err %d errno %d\n", err, errno))
+		goto out;
+
+	bpf_object__close(obj);
+
+	/* open the valid object file again */
+	obj = bpf_object__open_file(file, NULL);
+	err = libbpf_get_error(obj);
+	if (CHECK(err, "default open", "err %d errno %d\n", err, errno)) {
+		obj = NULL;
+		goto out;
+	}
+
+	/* swap pin paths of the two maps */
+	bpf_object__for_each_map(map, obj) {
+		if (!strcmp(bpf_map__name(map), "nopinmap"))
+			err = bpf_map__set_pin_path(map, pinpath);
+		else if (!strcmp(bpf_map__name(map), "pinmap"))
+			err = bpf_map__set_pin_path(map, NULL);
+		else
+			continue;
+
+		if (CHECK(err, "set pin path", "err %d errno %d\n", err, errno))
+			goto out;
+	}
+
+	/* should fail because of map parameter mismatch */
+	err = bpf_object__load(obj);
+	if (CHECK(err != -EINVAL, "param mismatch load", "err %d errno %d\n", err, errno))
+		goto out;
+
+	bpf_object__close(obj);
+
+	/* test auto-pinning at custom path with open opt */
+	obj = bpf_object__open_file(file, &opts);
+	if (CHECK_FAIL(libbpf_get_error(obj))) {
+		obj = NULL;
+		goto out;
+	}
+
+	err = bpf_object__load(obj);
+	if (CHECK(err, "custom load", "err %d errno %d\n", err, errno))
+		goto out;
+
+	/* check that pinmap was pinned at the custom path */
+	err = stat(custpinpath, &statbuf);
+	if (CHECK(err, "stat custpinpath", "err %d errno %d\n", err, errno))
+		goto out;
+
+out:
+	unlink(pinpath);
+	unlink(nopinpath);
+	unlink(nopinpath2);
+	unlink(custpinpath);
+	rmdir(custpath);
+	if (obj)
+		bpf_object__close(obj);
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/probe_user.c b/tools/testing/selftests/bpf/prog_tests/probe_user.c
new file mode 100644
index 000000000000..8a3187dec048
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/probe_user.c
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <test_progs.h>
+
+void test_probe_user(void)
+{
+#define kprobe_name "__sys_connect"
+	const char *prog_name = "kprobe/" kprobe_name;
+	const char *obj_file = "./test_probe_user.o";
+	DECLARE_LIBBPF_OPTS(bpf_object_open_opts, opts, );
+	int err, results_map_fd, sock_fd, duration = 0;
+	struct sockaddr curr, orig, tmp;
+	struct sockaddr_in *in = (struct sockaddr_in *)&curr;
+	struct bpf_link *kprobe_link = NULL;
+	struct bpf_program *kprobe_prog;
+	struct bpf_object *obj;
+	static const int zero = 0;
+
+	obj = bpf_object__open_file(obj_file, &opts);
+	if (CHECK(IS_ERR(obj), "obj_open_file", "err %ld\n", PTR_ERR(obj)))
+		return;
+
+	kprobe_prog = bpf_object__find_program_by_title(obj, prog_name);
+	if (CHECK(!kprobe_prog, "find_probe",
+		  "prog '%s' not found\n", prog_name))
+		goto cleanup;
+
+	err = bpf_object__load(obj);
+	if (CHECK(err, "obj_load", "err %d\n", err))
+		goto cleanup;
+
+	results_map_fd = bpf_find_map(__func__, obj, "test_pro.bss");
+	if (CHECK(results_map_fd < 0, "find_bss_map",
+		  "err %d\n", results_map_fd))
+		goto cleanup;
+
+	kprobe_link = bpf_program__attach_kprobe(kprobe_prog, false,
+						 kprobe_name);
+	if (CHECK(IS_ERR(kprobe_link), "attach_kprobe",
+		  "err %ld\n", PTR_ERR(kprobe_link))) {
+		kprobe_link = NULL;
+		goto cleanup;
+	}
+
+	memset(&curr, 0, sizeof(curr));
+	in->sin_family = AF_INET;
+	in->sin_port = htons(5555);
+	in->sin_addr.s_addr = inet_addr("255.255.255.255");
+	memcpy(&orig, &curr, sizeof(curr));
+
+	sock_fd = socket(AF_INET, SOCK_STREAM, 0);
+	if (CHECK(sock_fd < 0, "create_sock_fd", "err %d\n", sock_fd))
+		goto cleanup;
+
+	connect(sock_fd, &curr, sizeof(curr));
+	close(sock_fd);
+
+	err = bpf_map_lookup_elem(results_map_fd, &zero, &tmp);
+	if (CHECK(err, "get_kprobe_res",
+		  "failed to get kprobe res: %d\n", err))
+		goto cleanup;
+
+	in = (struct sockaddr_in *)&tmp;
+	if (CHECK(memcmp(&tmp, &orig, sizeof(orig)), "check_kprobe_res",
+		  "wrong kprobe res from probe read: %s:%u\n",
+		  inet_ntoa(in->sin_addr), ntohs(in->sin_port)))
+		goto cleanup;
+
+	memset(&tmp, 0xab, sizeof(tmp));
+
+	in = (struct sockaddr_in *)&curr;
+	if (CHECK(memcmp(&curr, &tmp, sizeof(tmp)), "check_kprobe_res",
+		  "wrong kprobe res from probe write: %s:%u\n",
+		  inet_ntoa(in->sin_addr), ntohs(in->sin_port)))
+		goto cleanup;
+cleanup:
+	bpf_link__destroy(kprobe_link);
+	bpf_object__close(obj);
+}
diff --git a/tools/testing/selftests/bpf/progs/kfree_skb.c b/tools/testing/selftests/bpf/progs/kfree_skb.c
index 89af8a921ee4..489319ea1d6a 100644
--- a/tools/testing/selftests/bpf/progs/kfree_skb.c
+++ b/tools/testing/selftests/bpf/progs/kfree_skb.c
@@ -79,11 +79,11 @@ int trace_kfree_skb(struct trace_kfree_skb *ctx)
 		func = ptr->func;
 	}));
 
-	bpf_probe_read(&pkt_type, sizeof(pkt_type), _(&skb->__pkt_type_offset));
+	bpf_probe_read_kernel(&pkt_type, sizeof(pkt_type), _(&skb->__pkt_type_offset));
 	pkt_type &= 7;
 
 	/* read eth proto */
-	bpf_probe_read(&pkt_data, sizeof(pkt_data), data + 12);
+	bpf_probe_read_kernel(&pkt_data, sizeof(pkt_data), data + 12);
 
 	bpf_printk("rcuhead.next %llx func %llx\n", ptr, func);
 	bpf_printk("skb->len %d users %d pkt_type %x\n",
diff --git a/tools/testing/selftests/bpf/progs/pyperf.h b/tools/testing/selftests/bpf/progs/pyperf.h
index 003fe106fc70..71d383cc9b85 100644
--- a/tools/testing/selftests/bpf/progs/pyperf.h
+++ b/tools/testing/selftests/bpf/progs/pyperf.h
@@ -72,9 +72,9 @@ static __always_inline void *get_thread_state(void *tls_base, PidData *pidData)
 	void* thread_state;
 	int key;
 
-	bpf_probe_read(&key, sizeof(key), (void*)(long)pidData->tls_key_addr);
-	bpf_probe_read(&thread_state, sizeof(thread_state),
-		       tls_base + 0x310 + key * 0x10 + 0x08);
+	bpf_probe_read_user(&key, sizeof(key), (void*)(long)pidData->tls_key_addr);
+	bpf_probe_read_user(&thread_state, sizeof(thread_state),
+			    tls_base + 0x310 + key * 0x10 + 0x08);
 	return thread_state;
 }
 
@@ -82,31 +82,33 @@ static __always_inline bool get_frame_data(void *frame_ptr, PidData *pidData,
 					   FrameData *frame, Symbol *symbol)
 {
 	// read data from PyFrameObject
-	bpf_probe_read(&frame->f_back,
-		       sizeof(frame->f_back),
-		       frame_ptr + pidData->offsets.PyFrameObject_back);
-	bpf_probe_read(&frame->f_code,
-		       sizeof(frame->f_code),
-		       frame_ptr + pidData->offsets.PyFrameObject_code);
+	bpf_probe_read_user(&frame->f_back,
+			    sizeof(frame->f_back),
+			    frame_ptr + pidData->offsets.PyFrameObject_back);
+	bpf_probe_read_user(&frame->f_code,
+			    sizeof(frame->f_code),
+			    frame_ptr + pidData->offsets.PyFrameObject_code);
 
 	// read data from PyCodeObject
 	if (!frame->f_code)
 		return false;
-	bpf_probe_read(&frame->co_filename,
-		       sizeof(frame->co_filename),
-		       frame->f_code + pidData->offsets.PyCodeObject_filename);
-	bpf_probe_read(&frame->co_name,
-		       sizeof(frame->co_name),
-		       frame->f_code + pidData->offsets.PyCodeObject_name);
+	bpf_probe_read_user(&frame->co_filename,
+			    sizeof(frame->co_filename),
+			    frame->f_code + pidData->offsets.PyCodeObject_filename);
+	bpf_probe_read_user(&frame->co_name,
+			    sizeof(frame->co_name),
+			    frame->f_code + pidData->offsets.PyCodeObject_name);
 	// read actual names into symbol
 	if (frame->co_filename)
-		bpf_probe_read_str(&symbol->file,
-				   sizeof(symbol->file),
-				   frame->co_filename + pidData->offsets.String_data);
+		bpf_probe_read_user_str(&symbol->file,
+					sizeof(symbol->file),
+					frame->co_filename +
+					pidData->offsets.String_data);
 	if (frame->co_name)
-		bpf_probe_read_str(&symbol->name,
-				   sizeof(symbol->name),
-				   frame->co_name + pidData->offsets.String_data);
+		bpf_probe_read_user_str(&symbol->name,
+					sizeof(symbol->name),
+					frame->co_name +
+					pidData->offsets.String_data);
 	return true;
 }
 
@@ -174,9 +176,9 @@ static __always_inline int __on_event(struct pt_regs *ctx)
 	event->kernel_stack_id = bpf_get_stackid(ctx, &stackmap, 0);
 
 	void* thread_state_current = (void*)0;
-	bpf_probe_read(&thread_state_current,
-		       sizeof(thread_state_current),
-		       (void*)(long)pidData->current_state_addr);
+	bpf_probe_read_user(&thread_state_current,
+			    sizeof(thread_state_current),
+			    (void*)(long)pidData->current_state_addr);
 
 	struct task_struct* task = (struct task_struct*)bpf_get_current_task();
 	void* tls_base = (void*)task;
@@ -188,11 +190,13 @@ static __always_inline int __on_event(struct pt_regs *ctx)
 	if (pidData->use_tls) {
 		uint64_t pthread_created;
 		uint64_t pthread_self;
-		bpf_probe_read(&pthread_self, sizeof(pthread_self), tls_base + 0x10);
+		bpf_probe_read_user(&pthread_self, sizeof(pthread_self),
+				    tls_base + 0x10);
 
-		bpf_probe_read(&pthread_created,
-			       sizeof(pthread_created),
-			       thread_state + pidData->offsets.PyThreadState_thread);
+		bpf_probe_read_user(&pthread_created,
+				    sizeof(pthread_created),
+				    thread_state +
+				    pidData->offsets.PyThreadState_thread);
 		event->pthread_match = pthread_created == pthread_self;
 	} else {
 		event->pthread_match = 1;
@@ -204,9 +208,10 @@ static __always_inline int __on_event(struct pt_regs *ctx)
 		Symbol sym = {};
 		int cur_cpu = bpf_get_smp_processor_id();
 
-		bpf_probe_read(&frame_ptr,
-			       sizeof(frame_ptr),
-			       thread_state + pidData->offsets.PyThreadState_frame);
+		bpf_probe_read_user(&frame_ptr,
+				    sizeof(frame_ptr),
+				    thread_state +
+				    pidData->offsets.PyThreadState_frame);
 
 		int32_t* symbol_counter = bpf_map_lookup_elem(&symbolmap, &sym);
 		if (symbol_counter == NULL)
diff --git a/tools/testing/selftests/bpf/progs/strobemeta.h b/tools/testing/selftests/bpf/progs/strobemeta.h
index 067eb625d01c..4bf16e0a1b0e 100644
--- a/tools/testing/selftests/bpf/progs/strobemeta.h
+++ b/tools/testing/selftests/bpf/progs/strobemeta.h
@@ -98,7 +98,7 @@ struct strobe_map_raw {
 	/*
 	 * having volatile doesn't change anything on BPF side, but clang
 	 * emits warnings for passing `volatile const char *` into
-	 * bpf_probe_read_str that expects just `const char *`
+	 * bpf_probe_read_user_str that expects just `const char *`
 	 */
 	const char* tag;
 	/*
@@ -309,18 +309,18 @@ static __always_inline void *calc_location(struct strobe_value_loc *loc,
 	dtv_t *dtv;
 	void *tls_ptr;
 
-	bpf_probe_read(&tls_index, sizeof(struct tls_index),
-		       (void *)loc->offset);
+	bpf_probe_read_user(&tls_index, sizeof(struct tls_index),
+			    (void *)loc->offset);
 	/* valid module index is always positive */
 	if (tls_index.module > 0) {
 		/* dtv = ((struct tcbhead *)tls_base)->dtv[tls_index.module] */
-		bpf_probe_read(&dtv, sizeof(dtv),
-			       &((struct tcbhead *)tls_base)->dtv);
+		bpf_probe_read_user(&dtv, sizeof(dtv),
+				    &((struct tcbhead *)tls_base)->dtv);
 		dtv += tls_index.module;
 	} else {
 		dtv = NULL;
 	}
-	bpf_probe_read(&tls_ptr, sizeof(void *), dtv);
+	bpf_probe_read_user(&tls_ptr, sizeof(void *), dtv);
 	/* if pointer has (void *)-1 value, then TLS wasn't initialized yet */
 	return tls_ptr && tls_ptr != (void *)-1
 		? tls_ptr + tls_index.offset
@@ -336,7 +336,7 @@ static __always_inline void read_int_var(struct strobemeta_cfg *cfg,
 	if (!location)
 		return;
 
-	bpf_probe_read(value, sizeof(struct strobe_value_generic), location);
+	bpf_probe_read_user(value, sizeof(struct strobe_value_generic), location);
 	data->int_vals[idx] = value->val;
 	if (value->header.len)
 		data->int_vals_set_mask |= (1 << idx);
@@ -356,13 +356,13 @@ static __always_inline uint64_t read_str_var(struct strobemeta_cfg *cfg,
 	if (!location)
 		return 0;
 
-	bpf_probe_read(value, sizeof(struct strobe_value_generic), location);
-	len = bpf_probe_read_str(payload, STROBE_MAX_STR_LEN, value->ptr);
+	bpf_probe_read_user(value, sizeof(struct strobe_value_generic), location);
+	len = bpf_probe_read_user_str(payload, STROBE_MAX_STR_LEN, value->ptr);
 	/*
-	 * if bpf_probe_read_str returns error (<0), due to casting to
+	 * if bpf_probe_read_user_str returns error (<0), due to casting to
 	 * unsinged int, it will become big number, so next check is
 	 * sufficient to check for errors AND prove to BPF verifier, that
-	 * bpf_probe_read_str won't return anything bigger than
+	 * bpf_probe_read_user_str won't return anything bigger than
 	 * STROBE_MAX_STR_LEN
 	 */
 	if (len > STROBE_MAX_STR_LEN)
@@ -391,8 +391,8 @@ static __always_inline void *read_map_var(struct strobemeta_cfg *cfg,
 	if (!location)
 		return payload;
 
-	bpf_probe_read(value, sizeof(struct strobe_value_generic), location);
-	if (bpf_probe_read(&map, sizeof(struct strobe_map_raw), value->ptr))
+	bpf_probe_read_user(value, sizeof(struct strobe_value_generic), location);
+	if (bpf_probe_read_user(&map, sizeof(struct strobe_map_raw), value->ptr))
 		return payload;
 
 	descr->id = map.id;
@@ -402,7 +402,7 @@ static __always_inline void *read_map_var(struct strobemeta_cfg *cfg,
 		data->req_meta_valid = 1;
 	}
 
-	len = bpf_probe_read_str(payload, STROBE_MAX_STR_LEN, map.tag);
+	len = bpf_probe_read_user_str(payload, STROBE_MAX_STR_LEN, map.tag);
 	if (len <= STROBE_MAX_STR_LEN) {
 		descr->tag_len = len;
 		payload += len;
@@ -418,15 +418,15 @@ static __always_inline void *read_map_var(struct strobemeta_cfg *cfg,
 			break;
 
 		descr->key_lens[i] = 0;
-		len = bpf_probe_read_str(payload, STROBE_MAX_STR_LEN,
-					 map.entries[i].key);
+		len = bpf_probe_read_user_str(payload, STROBE_MAX_STR_LEN,
+					      map.entries[i].key);
 		if (len <= STROBE_MAX_STR_LEN) {
 			descr->key_lens[i] = len;
 			payload += len;
 		}
 		descr->val_lens[i] = 0;
-		len = bpf_probe_read_str(payload, STROBE_MAX_STR_LEN,
-					 map.entries[i].val);
+		len = bpf_probe_read_user_str(payload, STROBE_MAX_STR_LEN,
+					      map.entries[i].val);
 		if (len <= STROBE_MAX_STR_LEN) {
 			descr->val_lens[i] = len;
 			payload += len;
diff --git a/tools/testing/selftests/bpf/progs/test_pinning.c b/tools/testing/selftests/bpf/progs/test_pinning.c
new file mode 100644
index 000000000000..f69a4a50d056
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/test_pinning.c
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/bpf.h>
+#include "bpf_helpers.h"
+
+int _version SEC("version") = 1;
+
+struct {
+	__uint(type, BPF_MAP_TYPE_ARRAY);
+	__uint(max_entries, 1);
+	__type(key, __u32);
+	__type(value, __u64);
+	__uint(pinning, LIBBPF_PIN_BY_NAME);
+} pinmap SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_HASH);
+	__uint(max_entries, 1);
+	__type(key, __u32);
+	__type(value, __u64);
+} nopinmap SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_ARRAY);
+	__uint(max_entries, 1);
+	__type(key, __u32);
+	__type(value, __u64);
+	__uint(pinning, LIBBPF_PIN_NONE);
+} nopinmap2 SEC(".maps");
+
+char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/test_pinning_invalid.c b/tools/testing/selftests/bpf/progs/test_pinning_invalid.c
new file mode 100644
index 000000000000..51b38abe7ba1
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/test_pinning_invalid.c
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/bpf.h>
+#include "bpf_helpers.h"
+
+int _version SEC("version") = 1;
+
+struct {
+	__uint(type, BPF_MAP_TYPE_ARRAY);
+	__uint(max_entries, 1);
+	__type(key, __u32);
+	__type(value, __u64);
+	__uint(pinning, 2); /* invalid */
+} nopinmap3 SEC(".maps");
+
+char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/test_probe_user.c b/tools/testing/selftests/bpf/progs/test_probe_user.c
new file mode 100644
index 000000000000..1871e2ece0c4
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/test_probe_user.c
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/ptrace.h>
+#include <linux/bpf.h>
+
+#include <netinet/in.h>
+
+#include "bpf_helpers.h"
+#include "bpf_tracing.h"
+
+static struct sockaddr_in old;
+
+SEC("kprobe/__sys_connect")
+int handle_sys_connect(struct pt_regs *ctx)
+{
+	void *ptr = (void *)PT_REGS_PARM2(ctx);
+	struct sockaddr_in new;
+
+	bpf_probe_read_user(&old, sizeof(old), ptr);
+	__builtin_memset(&new, 0xab, sizeof(new));
+	bpf_probe_write_user(ptr, &new, sizeof(new));
+
+	return 0;
+}
+
+char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/test_tcp_estats.c b/tools/testing/selftests/bpf/progs/test_tcp_estats.c
index c8c595da38d4..87b7d934ce73 100644
--- a/tools/testing/selftests/bpf/progs/test_tcp_estats.c
+++ b/tools/testing/selftests/bpf/progs/test_tcp_estats.c
@@ -38,7 +38,7 @@
 #include <sys/socket.h>
 #include "bpf_helpers.h"
 
-#define _(P) ({typeof(P) val = 0; bpf_probe_read(&val, sizeof(val), &P); val;})
+#define _(P) ({typeof(P) val = 0; bpf_probe_read_kernel(&val, sizeof(val), &P); val;})
 #define TCP_ESTATS_MAGIC 0xBAADBEEF
 
 /* This test case needs "sock" and "pt_regs" data structure.
diff --git a/tools/testing/selftests/bpf/test_offload.py b/tools/testing/selftests/bpf/test_offload.py
index d1645cc5ecbb..fc8a4319c1b2 100755
--- a/tools/testing/selftests/bpf/test_offload.py
+++ b/tools/testing/selftests/bpf/test_offload.py
@@ -314,9 +314,6 @@ class DebugfsDir:
                 continue
 
             p = os.path.join(path, f)
-            if not os.stat(p).st_mode & stat.S_IRUSR:
-                continue
-
             if os.path.isfile(p) and os.access(p, os.R_OK):
                 _, out = cmd('cat %s/%s' % (path, f))
                 dfs[f] = out.strip()
diff --git a/tools/testing/selftests/bpf/test_sysctl.c b/tools/testing/selftests/bpf/test_sysctl.c
index a320e3844b17..7aff907003d3 100644
--- a/tools/testing/selftests/bpf/test_sysctl.c
+++ b/tools/testing/selftests/bpf/test_sysctl.c
@@ -121,6 +121,29 @@ static struct sysctl_test tests[] = {
 		.result = OP_EPERM,
 	},
 	{
+		.descr = "ctx:write sysctl:write read ok narrow",
+		.insns = {
+			/* u64 w = (u16)write & 1; */
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+			BPF_LDX_MEM(BPF_H, BPF_REG_7, BPF_REG_1,
+				    offsetof(struct bpf_sysctl, write)),
+#else
+			BPF_LDX_MEM(BPF_H, BPF_REG_7, BPF_REG_1,
+				    offsetof(struct bpf_sysctl, write) + 2),
+#endif
+			BPF_ALU64_IMM(BPF_AND, BPF_REG_7, 1),
+			/* return 1 - w; */
+			BPF_MOV64_IMM(BPF_REG_0, 1),
+			BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_7),
+			BPF_EXIT_INSN(),
+		},
+		.attach_type = BPF_CGROUP_SYSCTL,
+		.sysctl = "kernel/domainname",
+		.open_flags = O_WRONLY,
+		.newval = "(none)", /* same as default, should fail anyway */
+		.result = OP_EPERM,
+	},
+	{
 		.descr = "ctx:write sysctl:read write reject",
 		.insns = {
 			/* write = X */