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

Daniel Borkmann says: ==================== pull-request: bpf-next 2019-04-28 The following pull-request contains BPF updates for your *net-next* tree. The main changes are: 1) Introduce BPF socket local storage map so that BPF programs can store private data they associate with a socket (instead of e.g. separate hash table), from Martin. 2) Add support for bpftool to dump BTF types. This is done through a new `bpftool btf dump` sub-command, from Andrii. 3) Enable BPF-based flow dissector for skb-less eth_get_headlen() calls which was currently not supported since skb was used to lookup netns, from Stanislav. 4) Add an opt-in interface for tracepoints to expose a writable context for attached BPF programs, used here for NBD sockets, from Matt. 5) BPF xadd related arm64 JIT fixes and scalability improvements, from Daniel. 6) Change the skb->protocol for bpf_skb_adjust_room() helper in order to support tunnels such as sit. Add selftests as well, from Willem. 7) Various smaller misc fixes. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-28 08:42:41 -04:00
--- a/tools/bpf/bpftool/Documentation/bpftool-btf.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-btf.rst
@@ -0,0 +1,222 @@
+================
+bpftool-btf
+================
+-------------------------------------------------------------------------------
+tool for inspection of BTF data
+-------------------------------------------------------------------------------
+
+:Manual section: 8
+
+SYNOPSIS
+========
+
+	**bpftool** [*OPTIONS*] **btf** *COMMAND*
+
+	*OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] }
+
+	*COMMANDS* := { **dump** | **help** }
+
+BTF COMMANDS
+=============
+
+|	**bpftool** **btf dump** *BTF_SRC*
+|	**bpftool** **btf help**
+|
+|	*BTF_SRC* := { **id** *BTF_ID* | **prog** *PROG* | **map** *MAP* [{**key** | **value** | **kv** | **all**}] | **file** *FILE* }
+|	*MAP* := { **id** *MAP_ID* | **pinned** *FILE* }
+|	*PROG* := { **id** *PROG_ID* | **pinned** *FILE* | **tag** *PROG_TAG* }
+
+DESCRIPTION
+===========
+	**bpftool btf dump** *BTF_SRC*
+		  Dump BTF entries from a given *BTF_SRC*.
+
+                  When **id** is specified, BTF object with that ID will be
+                  loaded and all its BTF types emitted.
+
+                  When **map** is provided, it's expected that map has
+                  associated BTF object with BTF types describing key and
+                  value. It's possible to select whether to dump only BTF
+                  type(s) associated with key (**key**), value (**value**),
+                  both key and value (**kv**), or all BTF types present in
+                  associated BTF object (**all**). If not specified, **kv**
+                  is assumed.
+
+                  When **prog** is provided, it's expected that program has
+                  associated BTF object with BTF types.
+
+                  When specifying *FILE*, an ELF file is expected, containing
+                  .BTF section with well-defined BTF binary format data,
+                  typically produced by clang or pahole.
+
+	**bpftool btf help**
+		  Print short help message.
+
+OPTIONS
+=======
+	-h, --help
+		  Print short generic help message (similar to **bpftool help**).
+
+	-V, --version
+		  Print version number (similar to **bpftool version**).
+
+	-j, --json
+		  Generate JSON output. For commands that cannot produce JSON, this
+		  option has no effect.
+
+	-p, --pretty
+		  Generate human-readable JSON output. Implies **-j**.
+
+EXAMPLES
+========
+**# bpftool btf dump id 1226**
+::
+
+  [1] PTR '(anon)' type_id=2
+  [2] STRUCT 'dummy_tracepoint_args' size=16 vlen=2
+          'pad' type_id=3 bits_offset=0
+          'sock' type_id=4 bits_offset=64
+  [3] INT 'long long unsigned int' size=8 bits_offset=0 nr_bits=64 encoding=(none)
+  [4] PTR '(anon)' type_id=5
+  [5] FWD 'sock' fwd_kind=union
+
+This gives an example of default output for all supported BTF kinds.
+
+**$ cat prog.c**
+::
+
+  struct fwd_struct;
+
+  enum my_enum {
+          VAL1 = 3,
+          VAL2 = 7,
+  };
+
+  typedef struct my_struct my_struct_t;
+
+  struct my_struct {
+          const unsigned int const_int_field;
+          int bitfield_field: 4;
+          char arr_field[16];
+          const struct fwd_struct *restrict fwd_field;
+          enum my_enum enum_field;
+          volatile my_struct_t *typedef_ptr_field;
+  };
+
+  union my_union {
+          int a;
+          struct my_struct b;
+  };
+
+  struct my_struct struct_global_var __attribute__((section("data_sec"))) = {
+          .bitfield_field = 3,
+          .enum_field = VAL1,
+  };
+  int global_var __attribute__((section("data_sec"))) = 7;
+
+  __attribute__((noinline))
+  int my_func(union my_union *arg1, int arg2)
+  {
+          static int static_var __attribute__((section("data_sec"))) = 123;
+          static_var++;
+          return static_var;
+  }
+
+**$ bpftool btf dump file prog.o**
+::
+
+  [1] PTR '(anon)' type_id=2
+  [2] UNION 'my_union' size=48 vlen=2
+          'a' type_id=3 bits_offset=0
+          'b' type_id=4 bits_offset=0
+  [3] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED
+  [4] STRUCT 'my_struct' size=48 vlen=6
+          'const_int_field' type_id=5 bits_offset=0
+          'bitfield_field' type_id=3 bits_offset=32 bitfield_size=4
+          'arr_field' type_id=8 bits_offset=40
+          'fwd_field' type_id=10 bits_offset=192
+          'enum_field' type_id=14 bits_offset=256
+          'typedef_ptr_field' type_id=15 bits_offset=320
+  [5] CONST '(anon)' type_id=6
+  [6] INT 'unsigned int' size=4 bits_offset=0 nr_bits=32 encoding=(none)
+  [7] INT 'char' size=1 bits_offset=0 nr_bits=8 encoding=SIGNED
+  [8] ARRAY '(anon)' type_id=7 index_type_id=9 nr_elems=16
+  [9] INT '__ARRAY_SIZE_TYPE__' size=4 bits_offset=0 nr_bits=32 encoding=(none)
+  [10] RESTRICT '(anon)' type_id=11
+  [11] PTR '(anon)' type_id=12
+  [12] CONST '(anon)' type_id=13
+  [13] FWD 'fwd_struct' fwd_kind=union
+  [14] ENUM 'my_enum' size=4 vlen=2
+          'VAL1' val=3
+          'VAL2' val=7
+  [15] PTR '(anon)' type_id=16
+  [16] VOLATILE '(anon)' type_id=17
+  [17] TYPEDEF 'my_struct_t' type_id=4
+  [18] FUNC_PROTO '(anon)' ret_type_id=3 vlen=2
+          'arg1' type_id=1
+          'arg2' type_id=3
+  [19] FUNC 'my_func' type_id=18
+  [20] VAR 'struct_global_var' type_id=4, linkage=global-alloc
+  [21] VAR 'global_var' type_id=3, linkage=global-alloc
+  [22] VAR 'my_func.static_var' type_id=3, linkage=static
+  [23] DATASEC 'data_sec' size=0 vlen=3
+          type_id=20 offset=0 size=48
+          type_id=21 offset=0 size=4
+          type_id=22 offset=52 size=4
+
+The following commands print BTF types associated with specified map's key,
+value, both key and value, and all BTF types, respectively. By default, both
+key and value types will be printed.
+
+**# bpftool btf dump map id 123 key**
+
+::
+
+  [39] TYPEDEF 'u32' type_id=37
+
+**# bpftool btf dump map id 123 value**
+
+::
+
+  [86] PTR '(anon)' type_id=87
+
+**# bpftool btf dump map id 123 kv**
+
+::
+
+  [39] TYPEDEF 'u32' type_id=37
+  [86] PTR '(anon)' type_id=87
+
+**# bpftool btf dump map id 123 all**
+
+::
+
+  [1] PTR '(anon)' type_id=0
+  .
+  .
+  .
+  [2866] ARRAY '(anon)' type_id=52 index_type_id=51 nr_elems=4
+
+All the standard ways to specify map or program are supported:
+
+**# bpftool btf dump map id 123**
+
+**# bpftool btf dump map pinned /sys/fs/bpf/map_name**
+
+**# bpftool btf dump prog id 456**
+
+**# bpftool btf dump prog tag b88e0a09b1d9759d**
+
+**# bpftool btf dump prog pinned /sys/fs/bpf/prog_name**
+
+SEE ALSO
+========
+	**bpf**\ (2),
+	**bpf-helpers**\ (7),
+	**bpftool**\ (8),
+	**bpftool-map**\ (8),
+	**bpftool-prog**\ (8),
+	**bpftool-cgroup**\ (8),
+	**bpftool-feature**\ (8),
+	**bpftool-net**\ (8),
+	**bpftool-perf**\ (8)
--- a/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst
@@ -145,4 +145,5 @@ SEE ALSO
 	**bpftool-map**\ (8),
 	**bpftool-feature**\ (8),
 	**bpftool-net**\ (8),
-	**bpftool-perf**\ (8)
+	**bpftool-perf**\ (8),
+	**bpftool-btf**\ (8)
--- a/tools/bpf/bpftool/Documentation/bpftool-feature.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-feature.rst
@@ -82,4 +82,5 @@ SEE ALSO
 	**bpftool-map**\ (8),
 	**bpftool-cgroup**\ (8),
 	**bpftool-net**\ (8),
-	**bpftool-perf**\ (8)
+	**bpftool-perf**\ (8),
+	**bpftool-btf**\ (8)
--- a/tools/bpf/bpftool/Documentation/bpftool-map.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-map.rst
@@ -258,4 +258,5 @@ SEE ALSO
 	**bpftool-cgroup**\ (8),
 	**bpftool-feature**\ (8),
 	**bpftool-net**\ (8),
-	**bpftool-perf**\ (8)
+	**bpftool-perf**\ (8),
+	**bpftool-btf**\ (8)
--- a/tools/bpf/bpftool/Documentation/bpftool-net.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-net.rst
@@ -143,4 +143,5 @@ SEE ALSO
 	**bpftool-map**\ (8),
 	**bpftool-cgroup**\ (8),
 	**bpftool-feature**\ (8),
-	**bpftool-perf**\ (8)
+	**bpftool-perf**\ (8),
+	**bpftool-btf**\ (8)
--- a/tools/bpf/bpftool/Documentation/bpftool-perf.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-perf.rst
@@ -85,4 +85,5 @@ SEE ALSO
 	**bpftool-map**\ (8),
 	**bpftool-cgroup**\ (8),
 	**bpftool-feature**\ (8),
-	**bpftool-net**\ (8)
+	**bpftool-net**\ (8),
+	**bpftool-btf**\ (8)
--- a/tools/bpf/bpftool/Documentation/bpftool-prog.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-prog.rst
@@ -271,4 +271,5 @@ SEE ALSO
 	**bpftool-cgroup**\ (8),
 	**bpftool-feature**\ (8),
 	**bpftool-net**\ (8),
-	**bpftool-perf**\ (8)
+	**bpftool-perf**\ (8),
+	**bpftool-btf**\ (8)
--- a/tools/bpf/bpftool/Documentation/bpftool.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool.rst
@@ -76,4 +76,5 @@ SEE ALSO
 	**bpftool-cgroup**\ (8),
 	**bpftool-feature**\ (8),
 	**bpftool-net**\ (8),
-	**bpftool-perf**\ (8)
+	**bpftool-perf**\ (8),
+	**bpftool-btf**\ (8)
--- a/tools/bpf/bpftool/bash-completion/bpftool
+++ b/tools/bpf/bpftool/bash-completion/bpftool
@@ -217,6 +217,7 @@ _bpftool()
    done
    cur=${words[cword]}
    prev=${words[cword - 1]}
+    pprev=${words[cword - 2]}

    local object=${words[1]} command=${words[2]}

@@ -272,17 +273,17 @@ _bpftool()
                                "$cur" ) )
                            return 0
                            ;;
-                    *)
-                        _bpftool_once_attr 'file'
-                        if _bpftool_search_list 'xlated'; then
-                            COMPREPLY+=( $( compgen -W 'opcodes visual linum' -- \
-                                "$cur" ) )
-                        else
-                            COMPREPLY+=( $( compgen -W 'opcodes linum' -- \
-                                "$cur" ) )
-                        fi
-                        return 0
-                        ;;
+                        *)
+                            _bpftool_once_attr 'file'
+                            if _bpftool_search_list 'xlated'; then
+                                COMPREPLY+=( $( compgen -W 'opcodes visual linum' -- \
+                                    "$cur" ) )
+                            else
+                                COMPREPLY+=( $( compgen -W 'opcodes linum' -- \
+                                    "$cur" ) )
+                            fi
+                            return 0
+                            ;;
                    esac
                    ;;
                pin)
@@ -607,6 +608,51 @@ _bpftool()
                    ;;
            esac
            ;;
+        btf)
+            local PROG_TYPE='id pinned tag'
+            local MAP_TYPE='id pinned'
+            case $command in
+                dump)
+                    case $prev in
+                        $command)
+                            COMPREPLY+=( $( compgen -W "id map prog file" -- \
+                                "$cur" ) )
+                            return 0
+                            ;;
+                        prog)
+                            COMPREPLY=( $( compgen -W "$PROG_TYPE" -- "$cur" ) )
+                            return 0
+                            ;;
+                        map)
+                            COMPREPLY=( $( compgen -W "$MAP_TYPE" -- "$cur" ) )
+                            return 0
+                            ;;
+                        id)
+                            case $pprev in
+                                prog)
+                                    _bpftool_get_prog_ids
+                                    ;;
+                                map)
+                                    _bpftool_get_map_ids
+                                    ;;
+                            esac
+                            return 0
+                            ;;
+                        *)
+                            if [[ $cword == 6 ]] && [[ ${words[3]} == "map" ]]; then
+                                 COMPREPLY+=( $( compgen -W 'key value kv all' -- \
+                                     "$cur" ) )
+                            fi
+                            return 0
+                            ;;
+                    esac
+                    ;;
+                *)
+                    [[ $prev == $object ]] && \
+                        COMPREPLY=( $( compgen -W 'dump help' -- "$cur" ) )
+                    ;;
+            esac
+            ;;
        cgroup)
            case $command in
                show|list)
--- a/tools/bpf/bpftool/btf.c
+++ b/tools/bpf/bpftool/btf.c
@@ -0,0 +1,586 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/* Copyright (C) 2019 Facebook */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <linux/err.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <gelf.h>
+#include <bpf.h>
+#include <linux/btf.h>
+
+#include "btf.h"
+#include "json_writer.h"
+#include "main.h"
+
+static const char * const btf_kind_str[NR_BTF_KINDS] = {
+	[BTF_KIND_UNKN]		= "UNKNOWN",
+	[BTF_KIND_INT]		= "INT",
+	[BTF_KIND_PTR]		= "PTR",
+	[BTF_KIND_ARRAY]	= "ARRAY",
+	[BTF_KIND_STRUCT]	= "STRUCT",
+	[BTF_KIND_UNION]	= "UNION",
+	[BTF_KIND_ENUM]		= "ENUM",
+	[BTF_KIND_FWD]		= "FWD",
+	[BTF_KIND_TYPEDEF]	= "TYPEDEF",
+	[BTF_KIND_VOLATILE]	= "VOLATILE",
+	[BTF_KIND_CONST]	= "CONST",
+	[BTF_KIND_RESTRICT]	= "RESTRICT",
+	[BTF_KIND_FUNC]		= "FUNC",
+	[BTF_KIND_FUNC_PROTO]	= "FUNC_PROTO",
+	[BTF_KIND_VAR]		= "VAR",
+	[BTF_KIND_DATASEC]	= "DATASEC",
+};
+
+static const char *btf_int_enc_str(__u8 encoding)
+{
+	switch (encoding) {
+	case 0:
+		return "(none)";
+	case BTF_INT_SIGNED:
+		return "SIGNED";
+	case BTF_INT_CHAR:
+		return "CHAR";
+	case BTF_INT_BOOL:
+		return "BOOL";
+	default:
+		return "UNKN";
+	}
+}
+
+static const char *btf_var_linkage_str(__u32 linkage)
+{
+	switch (linkage) {
+	case BTF_VAR_STATIC:
+		return "static";
+	case BTF_VAR_GLOBAL_ALLOCATED:
+		return "global-alloc";
+	default:
+		return "(unknown)";
+	}
+}
+
+static const char *btf_str(const struct btf *btf, __u32 off)
+{
+	if (!off)
+		return "(anon)";
+	return btf__name_by_offset(btf, off) ? : "(invalid)";
+}
+
+static int dump_btf_type(const struct btf *btf, __u32 id,
+			 const struct btf_type *t)
+{
+	json_writer_t *w = json_wtr;
+	int kind, safe_kind;
+
+	kind = BTF_INFO_KIND(t->info);
+	safe_kind = kind <= BTF_KIND_MAX ? kind : BTF_KIND_UNKN;
+
+	if (json_output) {
+		jsonw_start_object(w);
+		jsonw_uint_field(w, "id", id);
+		jsonw_string_field(w, "kind", btf_kind_str[safe_kind]);
+		jsonw_string_field(w, "name", btf_str(btf, t->name_off));
+	} else {
+		printf("[%u] %s '%s'", id, btf_kind_str[safe_kind],
+		       btf_str(btf, t->name_off));
+	}
+
+	switch (BTF_INFO_KIND(t->info)) {
+	case BTF_KIND_INT: {
+		__u32 v = *(__u32 *)(t + 1);
+		const char *enc;
+
+		enc = btf_int_enc_str(BTF_INT_ENCODING(v));
+
+		if (json_output) {
+			jsonw_uint_field(w, "size", t->size);
+			jsonw_uint_field(w, "bits_offset", BTF_INT_OFFSET(v));
+			jsonw_uint_field(w, "nr_bits", BTF_INT_BITS(v));
+			jsonw_string_field(w, "encoding", enc);
+		} else {
+			printf(" size=%u bits_offset=%u nr_bits=%u encoding=%s",
+			       t->size, BTF_INT_OFFSET(v), BTF_INT_BITS(v),
+			       enc);
+		}
+		break;
+	}
+	case BTF_KIND_PTR:
+	case BTF_KIND_CONST:
+	case BTF_KIND_VOLATILE:
+	case BTF_KIND_RESTRICT:
+	case BTF_KIND_TYPEDEF:
+		if (json_output)
+			jsonw_uint_field(w, "type_id", t->type);
+		else
+			printf(" type_id=%u", t->type);
+		break;
+	case BTF_KIND_ARRAY: {
+		const struct btf_array *arr = (const void *)(t + 1);
+
+		if (json_output) {
+			jsonw_uint_field(w, "type_id", arr->type);
+			jsonw_uint_field(w, "index_type_id", arr->index_type);
+			jsonw_uint_field(w, "nr_elems", arr->nelems);
+		} else {
+			printf(" type_id=%u index_type_id=%u nr_elems=%u",
+			       arr->type, arr->index_type, arr->nelems);
+		}
+		break;
+	}
+	case BTF_KIND_STRUCT:
+	case BTF_KIND_UNION: {
+		const struct btf_member *m = (const void *)(t + 1);
+		__u16 vlen = BTF_INFO_VLEN(t->info);
+		int i;
+
+		if (json_output) {
+			jsonw_uint_field(w, "size", t->size);
+			jsonw_uint_field(w, "vlen", vlen);
+			jsonw_name(w, "members");
+			jsonw_start_array(w);
+		} else {
+			printf(" size=%u vlen=%u", t->size, vlen);
+		}
+		for (i = 0; i < vlen; i++, m++) {
+			const char *name = btf_str(btf, m->name_off);
+			__u32 bit_off, bit_sz;
+
+			if (BTF_INFO_KFLAG(t->info)) {
+				bit_off = BTF_MEMBER_BIT_OFFSET(m->offset);
+				bit_sz = BTF_MEMBER_BITFIELD_SIZE(m->offset);
+			} else {
+				bit_off = m->offset;
+				bit_sz = 0;
+			}
+
+			if (json_output) {
+				jsonw_start_object(w);
+				jsonw_string_field(w, "name", name);
+				jsonw_uint_field(w, "type_id", m->type);
+				jsonw_uint_field(w, "bits_offset", bit_off);
+				if (bit_sz) {
+					jsonw_uint_field(w, "bitfield_size",
+							 bit_sz);
+				}
+				jsonw_end_object(w);
+			} else {
+				printf("\n\t'%s' type_id=%u bits_offset=%u",
+				       name, m->type, bit_off);
+				if (bit_sz)
+					printf(" bitfield_size=%u", bit_sz);
+			}
+		}
+		if (json_output)
+			jsonw_end_array(w);
+		break;
+	}
+	case BTF_KIND_ENUM: {
+		const struct btf_enum *v = (const void *)(t + 1);
+		__u16 vlen = BTF_INFO_VLEN(t->info);
+		int i;
+
+		if (json_output) {
+			jsonw_uint_field(w, "size", t->size);
+			jsonw_uint_field(w, "vlen", vlen);
+			jsonw_name(w, "values");
+			jsonw_start_array(w);
+		} else {
+			printf(" size=%u vlen=%u", t->size, vlen);
+		}
+		for (i = 0; i < vlen; i++, v++) {
+			const char *name = btf_str(btf, v->name_off);
+
+			if (json_output) {
+				jsonw_start_object(w);
+				jsonw_string_field(w, "name", name);
+				jsonw_uint_field(w, "val", v->val);
+				jsonw_end_object(w);
+			} else {
+				printf("\n\t'%s' val=%u", name, v->val);
+			}
+		}
+		if (json_output)
+			jsonw_end_array(w);
+		break;
+	}
+	case BTF_KIND_FWD: {
+		const char *fwd_kind = BTF_INFO_KIND(t->info) ? "union"
+							      : "struct";
+
+		if (json_output)
+			jsonw_string_field(w, "fwd_kind", fwd_kind);
+		else
+			printf(" fwd_kind=%s", fwd_kind);
+		break;
+	}
+	case BTF_KIND_FUNC:
+		if (json_output)
+			jsonw_uint_field(w, "type_id", t->type);
+		else
+			printf(" type_id=%u", t->type);
+		break;
+	case BTF_KIND_FUNC_PROTO: {
+		const struct btf_param *p = (const void *)(t + 1);
+		__u16 vlen = BTF_INFO_VLEN(t->info);
+		int i;
+
+		if (json_output) {
+			jsonw_uint_field(w, "ret_type_id", t->type);
+			jsonw_uint_field(w, "vlen", vlen);
+			jsonw_name(w, "params");
+			jsonw_start_array(w);
+		} else {
+			printf(" ret_type_id=%u vlen=%u", t->type, vlen);
+		}
+		for (i = 0; i < vlen; i++, p++) {
+			const char *name = btf_str(btf, p->name_off);
+
+			if (json_output) {
+				jsonw_start_object(w);
+				jsonw_string_field(w, "name", name);
+				jsonw_uint_field(w, "type_id", p->type);
+				jsonw_end_object(w);
+			} else {
+				printf("\n\t'%s' type_id=%u", name, p->type);
+			}
+		}
+		if (json_output)
+			jsonw_end_array(w);
+		break;
+	}
+	case BTF_KIND_VAR: {
+		const struct btf_var *v = (const void *)(t + 1);
+		const char *linkage;
+
+		linkage = btf_var_linkage_str(v->linkage);
+
+		if (json_output) {
+			jsonw_uint_field(w, "type_id", t->type);
+			jsonw_string_field(w, "linkage", linkage);
+		} else {
+			printf(" type_id=%u, linkage=%s", t->type, linkage);
+		}
+		break;
+	}
+	case BTF_KIND_DATASEC: {
+		const struct btf_var_secinfo *v = (const void *)(t+1);
+		__u16 vlen = BTF_INFO_VLEN(t->info);
+		int i;
+
+		if (json_output) {
+			jsonw_uint_field(w, "size", t->size);
+			jsonw_uint_field(w, "vlen", vlen);
+			jsonw_name(w, "vars");
+			jsonw_start_array(w);
+		} else {
+			printf(" size=%u vlen=%u", t->size, vlen);
+		}
+		for (i = 0; i < vlen; i++, v++) {
+			if (json_output) {
+				jsonw_start_object(w);
+				jsonw_uint_field(w, "type_id", v->type);
+				jsonw_uint_field(w, "offset", v->offset);
+				jsonw_uint_field(w, "size", v->size);
+				jsonw_end_object(w);
+			} else {
+				printf("\n\ttype_id=%u offset=%u size=%u",
+				       v->type, v->offset, v->size);
+			}
+		}
+		if (json_output)
+			jsonw_end_array(w);
+		break;
+	}
+	default:
+		break;
+	}
+
+	if (json_output)
+		jsonw_end_object(json_wtr);
+	else
+		printf("\n");
+
+	return 0;
+}
+
+static int dump_btf_raw(const struct btf *btf,
+			__u32 *root_type_ids, int root_type_cnt)
+{
+	const struct btf_type *t;
+	int i;
+
+	if (json_output) {
+		jsonw_start_object(json_wtr);
+		jsonw_name(json_wtr, "types");
+		jsonw_start_array(json_wtr);
+	}
+
+	if (root_type_cnt) {
+		for (i = 0; i < root_type_cnt; i++) {
+			t = btf__type_by_id(btf, root_type_ids[i]);
+			dump_btf_type(btf, root_type_ids[i], t);
+		}
+	} else {
+		int cnt = btf__get_nr_types(btf);
+
+		for (i = 1; i <= cnt; i++) {
+			t = btf__type_by_id(btf, i);
+			dump_btf_type(btf, i, t);
+		}
+	}
+
+	if (json_output) {
+		jsonw_end_array(json_wtr);
+		jsonw_end_object(json_wtr);
+	}
+	return 0;
+}
+
+static bool check_btf_endianness(GElf_Ehdr *ehdr)
+{
+	static unsigned int const endian = 1;
+
+	switch (ehdr->e_ident[EI_DATA]) {
+	case ELFDATA2LSB:
+		return *(unsigned char const *)&endian == 1;
+	case ELFDATA2MSB:
+		return *(unsigned char const *)&endian == 0;
+	default:
+		return 0;
+	}
+}
+
+static int btf_load_from_elf(const char *path, struct btf **btf)
+{
+	int err = -1, fd = -1, idx = 0;
+	Elf_Data *btf_data = NULL;
+	Elf_Scn *scn = NULL;
+	Elf *elf = NULL;
+	GElf_Ehdr ehdr;
+
+	if (elf_version(EV_CURRENT) == EV_NONE) {
+		p_err("failed to init libelf for %s", path);
+		return -1;
+	}
+
+	fd = open(path, O_RDONLY);
+	if (fd < 0) {
+		p_err("failed to open %s: %s", path, strerror(errno));
+		return -1;
+	}
+
+	elf = elf_begin(fd, ELF_C_READ, NULL);
+	if (!elf) {
+		p_err("failed to open %s as ELF file", path);
+		goto done;
+	}
+	if (!gelf_getehdr(elf, &ehdr)) {
+		p_err("failed to get EHDR from %s", path);
+		goto done;
+	}
+	if (!check_btf_endianness(&ehdr)) {
+		p_err("non-native ELF endianness is not supported");
+		goto done;
+	}
+	if (!elf_rawdata(elf_getscn(elf, ehdr.e_shstrndx), NULL)) {
+		p_err("failed to get e_shstrndx from %s\n", path);
+		goto done;
+	}
+
+	while ((scn = elf_nextscn(elf, scn)) != NULL) {
+		GElf_Shdr sh;
+		char *name;
+
+		idx++;
+		if (gelf_getshdr(scn, &sh) != &sh) {
+			p_err("failed to get section(%d) header from %s",
+			      idx, path);
+			goto done;
+		}
+		name = elf_strptr(elf, ehdr.e_shstrndx, sh.sh_name);
+		if (!name) {
+			p_err("failed to get section(%d) name from %s",
+			      idx, path);
+			goto done;
+		}
+		if (strcmp(name, BTF_ELF_SEC) == 0) {
+			btf_data = elf_getdata(scn, 0);
+			if (!btf_data) {
+				p_err("failed to get section(%d, %s) data from %s",
+				      idx, name, path);
+				goto done;
+			}
+			break;
+		}
+	}
+
+	if (!btf_data) {
+		p_err("%s ELF section not found in %s", BTF_ELF_SEC, path);
+		goto done;
+	}
+
+	*btf = btf__new(btf_data->d_buf, btf_data->d_size);
+	if (IS_ERR(*btf)) {
+		err = PTR_ERR(*btf);
+		*btf = NULL;
+		p_err("failed to load BTF data from %s: %s",
+		      path, strerror(err));
+		goto done;
+	}
+
+	err = 0;
+done:
+	if (err) {
+		if (*btf) {
+			btf__free(*btf);
+			*btf = NULL;
+		}
+	}
+	if (elf)
+		elf_end(elf);
+	close(fd);
+	return err;
+}
+
+static int do_dump(int argc, char **argv)
+{
+	struct btf *btf = NULL;
+	__u32 root_type_ids[2];
+	int root_type_cnt = 0;
+	__u32 btf_id = -1;
+	const char *src;
+	int fd = -1;
+	int err;
+
+	if (!REQ_ARGS(2)) {
+		usage();
+		return -1;
+	}
+	src = GET_ARG();
+
+	if (is_prefix(src, "map")) {
+		struct bpf_map_info info = {};
+		__u32 len = sizeof(info);
+
+		if (!REQ_ARGS(2)) {
+			usage();
+			return -1;
+		}
+
+		fd = map_parse_fd_and_info(&argc, &argv, &info, &len);
+		if (fd < 0)
+			return -1;
+
+		btf_id = info.btf_id;
+		if (argc && is_prefix(*argv, "key")) {
+			root_type_ids[root_type_cnt++] = info.btf_key_type_id;
+			NEXT_ARG();
+		} else if (argc && is_prefix(*argv, "value")) {
+			root_type_ids[root_type_cnt++] = info.btf_value_type_id;
+			NEXT_ARG();
+		} else if (argc && is_prefix(*argv, "all")) {
+			NEXT_ARG();
+		} else if (argc && is_prefix(*argv, "kv")) {
+			root_type_ids[root_type_cnt++] = info.btf_key_type_id;
+			root_type_ids[root_type_cnt++] = info.btf_value_type_id;
+			NEXT_ARG();
+		} else {
+			root_type_ids[root_type_cnt++] = info.btf_key_type_id;
+			root_type_ids[root_type_cnt++] = info.btf_value_type_id;
+		}
+	} else if (is_prefix(src, "prog")) {
+		struct bpf_prog_info info = {};
+		__u32 len = sizeof(info);
+
+		if (!REQ_ARGS(2)) {
+			usage();
+			return -1;
+		}
+
+		fd = prog_parse_fd(&argc, &argv);
+		if (fd < 0)
+			return -1;
+
+		err = bpf_obj_get_info_by_fd(fd, &info, &len);
+		if (err) {
+			p_err("can't get prog info: %s", strerror(errno));
+			goto done;
+		}
+
+		btf_id = info.btf_id;
+	} else if (is_prefix(src, "id")) {
+		char *endptr;
+
+		btf_id = strtoul(*argv, &endptr, 0);
+		if (*endptr) {
+			p_err("can't parse %s as ID", **argv);
+			return -1;
+		}
+		NEXT_ARG();
+	} else if (is_prefix(src, "file")) {
+		err = btf_load_from_elf(*argv, &btf);
+		if (err)
+			goto done;
+		NEXT_ARG();
+	} else {
+		err = -1;
+		p_err("unrecognized BTF source specifier: '%s'", src);
+		goto done;
+	}
+
+	if (!btf) {
+		err = btf__get_from_id(btf_id, &btf);
+		if (err) {
+			p_err("get btf by id (%u): %s", btf_id, strerror(err));
+			goto done;
+		}
+		if (!btf) {
+			err = ENOENT;
+			p_err("can't find btf with ID (%u)", btf_id);
+			goto done;
+		}
+	}
+
+	dump_btf_raw(btf, root_type_ids, root_type_cnt);
+
+done:
+	close(fd);
+	btf__free(btf);
+	return err;
+}
+
+static int do_help(int argc, char **argv)
+{
+	if (json_output) {
+		jsonw_null(json_wtr);
+		return 0;
+	}
+
+	fprintf(stderr,
+		"Usage: %s btf dump BTF_SRC\n"
+		"       %s btf help\n"
+		"\n"
+		"       BTF_SRC := { id BTF_ID | prog PROG | map MAP [{key | value | kv | all}] | file FILE }\n"
+		"       " HELP_SPEC_MAP "\n"
+		"       " HELP_SPEC_PROGRAM "\n"
+		"       " HELP_SPEC_OPTIONS "\n"
+		"",
+		bin_name, bin_name);
+
+	return 0;
+}
+
+static const struct cmd cmds[] = {
+	{ "help",	do_help },
+	{ "dump",	do_dump },
+	{ 0 }
+};
+
+int do_btf(int argc, char **argv)
+{
+	return cmd_select(cmds, argc, argv, do_help);
+}
--- a/tools/bpf/bpftool/main.c
+++ b/tools/bpf/bpftool/main.c
@@ -56,7 +56,7 @@ static int do_help(int argc, char **argv)
 		"       %s batch file FILE\n"
 		"       %s version\n"
 		"\n"
-		"       OBJECT := { prog | map | cgroup | perf | net | feature }\n"
+		"       OBJECT := { prog | map | cgroup | perf | net | feature | btf }\n"
 		"       " HELP_SPEC_OPTIONS "\n"
 		"",
 		bin_name, bin_name, bin_name);
@@ -188,6 +188,7 @@ static const struct cmd cmds[] = {
 	{ "perf",	do_perf },
 	{ "net",	do_net },
 	{ "feature",	do_feature },
+	{ "btf",	do_btf },
 	{ "version",	do_version },
 	{ 0 }
 };
--- a/tools/bpf/bpftool/main.h
+++ b/tools/bpf/bpftool/main.h
@@ -150,6 +150,7 @@ int do_perf(int argc, char **arg);
 int do_net(int argc, char **arg);
 int do_tracelog(int argc, char **arg);
 int do_feature(int argc, char **argv);
+int do_btf(int argc, char **argv);

 int parse_u32_arg(int *argc, char ***argv, __u32 *val, const char *what);
 int prog_parse_fd(int *argc, char ***argv);
--- a/tools/bpf/bpftool/map.c
+++ b/tools/bpf/bpftool/map.c
@@ -46,6 +46,7 @@ const char * const map_type_name[] = {
 	[BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE]	= "percpu_cgroup_storage",
 	[BPF_MAP_TYPE_QUEUE]			= "queue",
 	[BPF_MAP_TYPE_STACK]			= "stack",
+	[BPF_MAP_TYPE_SK_STORAGE]		= "sk_storage",
 };

 const size_t map_type_name_size = ARRAY_SIZE(map_type_name);
@@ -724,7 +725,7 @@ static int dump_map_elem(int fd, void *key, void *value,
 	} else {
 		const char *msg = NULL;

-		if (errno == ENOENT)
+		if (lookup_errno == ENOENT)
 			msg = "<no entry>";
 		else if (lookup_errno == ENOSPC &&
 			 map_info->type == BPF_MAP_TYPE_REUSEPORT_SOCKARRAY)
--- a/tools/bpf/bpftool/net.c
+++ b/tools/bpf/bpftool/net.c
@@ -3,6 +3,7 @@

 #define _GNU_SOURCE
 #include <errno.h>
+#include <fcntl.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
@@ -12,6 +13,8 @@
 #include <linux/rtnetlink.h>
 #include <linux/tc_act/tc_bpf.h>
 #include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/types.h>

 #include <bpf.h>
 #include <nlattr.h>
@@ -48,6 +51,10 @@ struct bpf_filter_t {
 	int		ifindex;
 };

+struct bpf_attach_info {
+	__u32 flow_dissector_id;
+};
+
 static int dump_link_nlmsg(void *cookie, void *msg, struct nlattr **tb)
 {
 	struct bpf_netdev_t *netinfo = cookie;
@@ -180,8 +187,45 @@ out:
 	return 0;
 }

+static int query_flow_dissector(struct bpf_attach_info *attach_info)
+{
+	__u32 attach_flags;
+	__u32 prog_ids[1];
+	__u32 prog_cnt;
+	int err;
+	int fd;
+
+	fd = open("/proc/self/ns/net", O_RDONLY);
+	if (fd < 0) {
+		p_err("can't open /proc/self/ns/net: %d",
+		      strerror(errno));
+		return -1;
+	}
+	prog_cnt = ARRAY_SIZE(prog_ids);
+	err = bpf_prog_query(fd, BPF_FLOW_DISSECTOR, 0,
+			     &attach_flags, prog_ids, &prog_cnt);
+	close(fd);
+	if (err) {
+		if (errno == EINVAL) {
+			/* Older kernel's don't support querying
+			 * flow dissector programs.
+			 */
+			errno = 0;
+			return 0;
+		}
+		p_err("can't query prog: %s", strerror(errno));
+		return -1;
+	}
+
+	if (prog_cnt == 1)
+		attach_info->flow_dissector_id = prog_ids[0];
+
+	return 0;
+}
+
 static int do_show(int argc, char **argv)
 {
+	struct bpf_attach_info attach_info = {};
 	int i, sock, ret, filter_idx = -1;
 	struct bpf_netdev_t dev_array;
 	unsigned int nl_pid;
@@ -199,6 +243,10 @@ static int do_show(int argc, char **argv)
 		usage();
 	}

+	ret = query_flow_dissector(&attach_info);
+	if (ret)
+		return -1;
+
 	sock = libbpf_netlink_open(&nl_pid);
 	if (sock < 0) {
 		fprintf(stderr, "failed to open netlink sock\n");
@@ -227,6 +275,12 @@ static int do_show(int argc, char **argv)
 		}
 		NET_END_ARRAY("\n");
 	}
+
+	NET_START_ARRAY("flow_dissector", "%s:\n");
+	if (attach_info.flow_dissector_id > 0)
+		NET_DUMP_UINT("id", "id %u", attach_info.flow_dissector_id);
+	NET_END_ARRAY("\n");
+
 	NET_END_OBJECT;
 	if (json_output)
 		jsonw_end_array(json_wtr);
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -133,6 +133,7 @@ enum bpf_map_type {
 	BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE,
 	BPF_MAP_TYPE_QUEUE,
 	BPF_MAP_TYPE_STACK,
+	BPF_MAP_TYPE_SK_STORAGE,
 };

 /* Note that tracing related programs such as
@@ -168,6 +169,7 @@ enum bpf_prog_type {
 	BPF_PROG_TYPE_SK_REUSEPORT,
 	BPF_PROG_TYPE_FLOW_DISSECTOR,
 	BPF_PROG_TYPE_CGROUP_SYSCTL,
+	BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE,
 };

 enum bpf_attach_type {
@@ -1737,12 +1739,19 @@ union bpf_attr {
 * 		error if an eBPF program tries to set a callback that is not
 * 		supported in the current kernel.
 *
- * 		The supported callback values that *argval* can combine are:
+ * 		*argval* is a flag array which can combine these flags:
 *
 * 		* **BPF_SOCK_OPS_RTO_CB_FLAG** (retransmission time out)
 * 		* **BPF_SOCK_OPS_RETRANS_CB_FLAG** (retransmission)
 * 		* **BPF_SOCK_OPS_STATE_CB_FLAG** (TCP state change)
 *
+ * 		Therefore, this function can be used to clear a callback flag by
+ * 		setting the appropriate bit to zero. e.g. to disable the RTO
+ * 		callback:
+ *
+ * 		**bpf_sock_ops_cb_flags_set(bpf_sock,**
+ * 			**bpf_sock->bpf_sock_ops_cb_flags & ~BPF_SOCK_OPS_RTO_CB_FLAG)**
+ *
 * 		Here are some examples of where one could call such eBPF
 * 		program:
 *
@@ -2622,6 +2631,42 @@ union bpf_attr {
 *		was provided.
 *
 *		**-ERANGE** if resulting value was out of range.
+ *
+ * void *bpf_sk_storage_get(struct bpf_map *map, struct bpf_sock *sk, void *value, u64 flags)
+ *	Description
+ *		Get a bpf-local-storage from a sk.
+ *
+ *		Logically, it could be thought of getting the value from
+ *		a *map* with *sk* as the **key**.  From this
+ *		perspective,  the usage is not much different from
+ *		**bpf_map_lookup_elem(map, &sk)** except this
+ *		helper enforces the key must be a **bpf_fullsock()**
+ *		and the map must be a BPF_MAP_TYPE_SK_STORAGE also.
+ *
+ *		Underneath, the value is stored locally at *sk* instead of
+ *		the map.  The *map* is used as the bpf-local-storage **type**.
+ *		The bpf-local-storage **type** (i.e. the *map*) is searched
+ *		against all bpf-local-storages residing at sk.
+ *
+ *		An optional *flags* (BPF_SK_STORAGE_GET_F_CREATE) can be
+ *		used such that a new bpf-local-storage will be
+ *		created if one does not exist.  *value* can be used
+ *		together with BPF_SK_STORAGE_GET_F_CREATE to specify
+ *		the initial value of a bpf-local-storage.  If *value* is
+ *		NULL, the new bpf-local-storage will be zero initialized.
+ *	Return
+ *		A bpf-local-storage pointer is returned on success.
+ *
+ *		**NULL** if not found or there was an error in adding
+ *		a new bpf-local-storage.
+ *
+ * int bpf_sk_storage_delete(struct bpf_map *map, struct bpf_sock *sk)
+ *	Description
+ *		Delete a bpf-local-storage from a sk.
+ *	Return
+ *		0 on success.
+ *
+ *		**-ENOENT** if the bpf-local-storage cannot be found.
 */
 #define __BPF_FUNC_MAPPER(FN)		\
 	FN(unspec),			\
@@ -2730,7 +2775,9 @@ union bpf_attr {
 	FN(sysctl_get_new_value),	\
 	FN(sysctl_set_new_value),	\
 	FN(strtol),			\
-	FN(strtoul),
+	FN(strtoul),			\
+	FN(sk_storage_get),		\
+	FN(sk_storage_delete),

 /* integer value in 'imm' field of BPF_CALL instruction selects which helper
 * function eBPF program intends to call
@@ -2806,6 +2853,9 @@ enum bpf_func_id {
 /* BPF_FUNC_sysctl_get_name flags. */
 #define BPF_F_SYSCTL_BASE_NAME		(1ULL << 0)

+/* BPF_FUNC_sk_storage_get flags */
+#define BPF_SK_STORAGE_GET_F_CREATE	(1ULL << 0)
+
 /* Mode for BPF_FUNC_skb_adjust_room helper. */
 enum bpf_adj_room_mode {
 	BPF_ADJ_ROOM_NET,
--- a/tools/lib/bpf/bpf.h
+++ b/tools/lib/bpf/bpf.h
@@ -26,6 +26,7 @@
 #include <linux/bpf.h>
 #include <stdbool.h>
 #include <stddef.h>
+#include <stdint.h>

 #ifdef __cplusplus
 extern "C" {
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -126,6 +126,8 @@ static inline __u64 ptr_to_u64(const void *ptr)
 struct bpf_capabilities {
 	/* v4.14: kernel support for program & map names. */
 	__u32 name:1;
+	/* v5.2: kernel support for global data sections. */
+	__u32 global_data:1;
 };

 /*
@@ -854,12 +856,15 @@ bpf_object__init_maps(struct bpf_object *obj, int flags)
 	 *
 	 * TODO: Detect array of map and report error.
 	 */
-	if (obj->efile.data_shndx >= 0)
-		nr_maps_glob++;
-	if (obj->efile.rodata_shndx >= 0)
-		nr_maps_glob++;
-	if (obj->efile.bss_shndx >= 0)
-		nr_maps_glob++;
+	if (obj->caps.global_data) {
+		if (obj->efile.data_shndx >= 0)
+			nr_maps_glob++;
+		if (obj->efile.rodata_shndx >= 0)
+			nr_maps_glob++;
+		if (obj->efile.bss_shndx >= 0)
+			nr_maps_glob++;
+	}
+
 	for (i = 0; data && i < nr_syms; i++) {
 		GElf_Sym sym;

@@ -870,14 +875,14 @@ bpf_object__init_maps(struct bpf_object *obj, int flags)
 		nr_maps++;
 	}

-	/* Alloc obj->maps and fill nr_maps. */
-	pr_debug("maps in %s: %d maps in %zd bytes\n", obj->path,
-		 nr_maps, data->d_size);
 	if (!nr_maps && !nr_maps_glob)
 		return 0;

 	/* Assume equally sized map definitions */
 	if (data) {
+		pr_debug("maps in %s: %d maps in %zd bytes\n", obj->path,
+			 nr_maps, data->d_size);
+
 		map_def_sz = data->d_size / nr_maps;
 		if (!data->d_size || (data->d_size % nr_maps) != 0) {
 			pr_warning("unable to determine map definition size "
@@ -971,6 +976,9 @@ bpf_object__init_maps(struct bpf_object *obj, int flags)
 		map_idx++;
 	}

+	if (!obj->caps.global_data)
+		goto finalize;
+
 	/*
 	 * Populate rest of obj->maps with libbpf internal maps.
 	 */
@@ -988,6 +996,7 @@ bpf_object__init_maps(struct bpf_object *obj, int flags)
 		ret = bpf_object__init_internal_map(obj, &obj->maps[map_idx++],
 						    LIBBPF_MAP_BSS,
 						    obj->efile.bss, NULL);
+finalize:
 	if (!ret)
 		qsort(obj->maps, obj->nr_maps, sizeof(obj->maps[0]),
 		      compare_bpf_map);
@@ -1333,11 +1342,17 @@ bpf_program__collect_reloc(struct bpf_program *prog, GElf_Shdr *shdr,
 		if (bpf_object__shndx_is_maps(obj, shdr_idx) ||
 		    bpf_object__shndx_is_data(obj, shdr_idx)) {
 			type = bpf_object__section_to_libbpf_map_type(obj, shdr_idx);
-			if (type != LIBBPF_MAP_UNSPEC &&
-			    GELF_ST_BIND(sym.st_info) == STB_GLOBAL) {
-				pr_warning("bpf: relocation: not yet supported relo for non-static global \'%s\' variable found in insns[%d].code 0x%x\n",
-					   name, insn_idx, insns[insn_idx].code);
-				return -LIBBPF_ERRNO__RELOC;
+			if (type != LIBBPF_MAP_UNSPEC) {
+				if (GELF_ST_BIND(sym.st_info) == STB_GLOBAL) {
+					pr_warning("bpf: relocation: not yet supported relo for non-static global \'%s\' variable found in insns[%d].code 0x%x\n",
+						   name, insn_idx, insns[insn_idx].code);
+					return -LIBBPF_ERRNO__RELOC;
+				}
+				if (!obj->caps.global_data) {
+					pr_warning("bpf: relocation: kernel does not support global \'%s\' variable access in insns[%d]\n",
+						   name, insn_idx);
+					return -LIBBPF_ERRNO__RELOC;
+				}
 			}

 			for (map_idx = 0; map_idx < nr_maps; map_idx++) {
@@ -1495,10 +1510,68 @@ bpf_object__probe_name(struct bpf_object *obj)
 	return 0;
 }

+static int
+bpf_object__probe_global_data(struct bpf_object *obj)
+{
+	struct bpf_load_program_attr prg_attr;
+	struct bpf_create_map_attr map_attr;
+	char *cp, errmsg[STRERR_BUFSIZE];
+	struct bpf_insn insns[] = {
+		BPF_LD_MAP_VALUE(BPF_REG_1, 0, 16),
+		BPF_ST_MEM(BPF_DW, BPF_REG_1, 0, 42),
+		BPF_MOV64_IMM(BPF_REG_0, 0),
+		BPF_EXIT_INSN(),
+	};
+	int ret, map;
+
+	memset(&map_attr, 0, sizeof(map_attr));
+	map_attr.map_type = BPF_MAP_TYPE_ARRAY;
+	map_attr.key_size = sizeof(int);
+	map_attr.value_size = 32;
+	map_attr.max_entries = 1;
+
+	map = bpf_create_map_xattr(&map_attr);
+	if (map < 0) {
+		cp = libbpf_strerror_r(errno, errmsg, sizeof(errmsg));
+		pr_warning("Error in %s():%s(%d). Couldn't create simple array map.\n",
+			   __func__, cp, errno);
+		return -errno;
+	}
+
+	insns[0].imm = map;
+
+	memset(&prg_attr, 0, sizeof(prg_attr));
+	prg_attr.prog_type = BPF_PROG_TYPE_SOCKET_FILTER;
+	prg_attr.insns = insns;
+	prg_attr.insns_cnt = ARRAY_SIZE(insns);
+	prg_attr.license = "GPL";
+
+	ret = bpf_load_program_xattr(&prg_attr, NULL, 0);
+	if (ret >= 0) {
+		obj->caps.global_data = 1;
+		close(ret);
+	}
+
+	close(map);
+	return 0;
+}
+
 static int
 bpf_object__probe_caps(struct bpf_object *obj)
 {
-	return bpf_object__probe_name(obj);
+	int (*probe_fn[])(struct bpf_object *obj) = {
+		bpf_object__probe_name,
+		bpf_object__probe_global_data,
+	};
+	int i, ret;
+
+	for (i = 0; i < ARRAY_SIZE(probe_fn); i++) {
+		ret = probe_fn[i](obj);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
 }

 static int
@@ -2063,6 +2136,7 @@ static bool bpf_prog_type__needs_kver(enum bpf_prog_type type)
 	case BPF_PROG_TYPE_UNSPEC:
 	case BPF_PROG_TYPE_TRACEPOINT:
 	case BPF_PROG_TYPE_RAW_TRACEPOINT:
+	case BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE:
 	case BPF_PROG_TYPE_PERF_EVENT:
 	case BPF_PROG_TYPE_CGROUP_SYSCTL:
 		return false;
@@ -2100,6 +2174,7 @@ __bpf_object__open(const char *path, void *obj_buf, size_t obj_buf_sz,

 	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, flags), err, out);
 	CHECK_ERR(bpf_object__collect_reloc(obj), err, out);
 	CHECK_ERR(bpf_object__validate(obj, needs_kver), err, out);
@@ -2193,7 +2268,6 @@ int bpf_object__load(struct bpf_object *obj)

 	obj->loaded = true;

-	CHECK_ERR(bpf_object__probe_caps(obj), err, out);
 	CHECK_ERR(bpf_object__create_maps(obj), err, out);
 	CHECK_ERR(bpf_object__relocate(obj), err, out);
 	CHECK_ERR(bpf_object__load_progs(obj), err, out);
--- a/tools/lib/bpf/libbpf_probes.c
+++ b/tools/lib/bpf/libbpf_probes.c
@@ -9,6 +9,7 @@
 #include <net/if.h>
 #include <sys/utsname.h>

+#include <linux/btf.h>
 #include <linux/filter.h>
 #include <linux/kernel.h>

@@ -93,6 +94,7 @@ probe_load(enum bpf_prog_type prog_type, const struct bpf_insn *insns,
 	case BPF_PROG_TYPE_CGROUP_DEVICE:
 	case BPF_PROG_TYPE_SK_MSG:
 	case BPF_PROG_TYPE_RAW_TRACEPOINT:
+	case BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE:
 	case BPF_PROG_TYPE_LWT_SEG6LOCAL:
 	case BPF_PROG_TYPE_LIRC_MODE2:
 	case BPF_PROG_TYPE_SK_REUSEPORT:
@@ -130,11 +132,65 @@ bool bpf_probe_prog_type(enum bpf_prog_type prog_type, __u32 ifindex)
 	return errno != EINVAL && errno != EOPNOTSUPP;
 }

+static int load_btf(void)
+{
+#define BTF_INFO_ENC(kind, kind_flag, vlen) \
+	((!!(kind_flag) << 31) | ((kind) << 24) | ((vlen) & BTF_MAX_VLEN))
+#define BTF_TYPE_ENC(name, info, size_or_type) \
+	(name), (info), (size_or_type)
+#define BTF_INT_ENC(encoding, bits_offset, nr_bits) \
+	((encoding) << 24 | (bits_offset) << 16 | (nr_bits))
+#define BTF_TYPE_INT_ENC(name, encoding, bits_offset, bits, sz) \
+	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_INT, 0, 0), sz), \
+	BTF_INT_ENC(encoding, bits_offset, bits)
+#define BTF_MEMBER_ENC(name, type, bits_offset) \
+	(name), (type), (bits_offset)
+
+	const char btf_str_sec[] = "\0bpf_spin_lock\0val\0cnt\0l";
+	/* struct bpf_spin_lock {
+	 *   int val;
+	 * };
+	 * struct val {
+	 *   int cnt;
+	 *   struct bpf_spin_lock l;
+	 * };
+	 */
+	__u32 btf_raw_types[] = {
+		/* int */
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
+		/* struct bpf_spin_lock */                      /* [2] */
+		BTF_TYPE_ENC(1, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), 4),
+		BTF_MEMBER_ENC(15, 1, 0), /* int val; */
+		/* struct val */                                /* [3] */
+		BTF_TYPE_ENC(15, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), 8),
+		BTF_MEMBER_ENC(19, 1, 0), /* int cnt; */
+		BTF_MEMBER_ENC(23, 2, 32),/* struct bpf_spin_lock l; */
+	};
+	struct btf_header btf_hdr = {
+		.magic = BTF_MAGIC,
+		.version = BTF_VERSION,
+		.hdr_len = sizeof(struct btf_header),
+		.type_len = sizeof(btf_raw_types),
+		.str_off = sizeof(btf_raw_types),
+		.str_len = sizeof(btf_str_sec),
+	};
+	__u8 raw_btf[sizeof(struct btf_header) + sizeof(btf_raw_types) +
+		     sizeof(btf_str_sec)];
+
+	memcpy(raw_btf, &btf_hdr, sizeof(btf_hdr));
+	memcpy(raw_btf + sizeof(btf_hdr), btf_raw_types, sizeof(btf_raw_types));
+	memcpy(raw_btf + sizeof(btf_hdr) + sizeof(btf_raw_types),
+	       btf_str_sec, sizeof(btf_str_sec));
+
+	return bpf_load_btf(raw_btf, sizeof(raw_btf), 0, 0, 0);
+}
+
 bool bpf_probe_map_type(enum bpf_map_type map_type, __u32 ifindex)
 {
 	int key_size, value_size, max_entries, map_flags;
+	__u32 btf_key_type_id = 0, btf_value_type_id = 0;
 	struct bpf_create_map_attr attr = {};
-	int fd = -1, fd_inner;
+	int fd = -1, btf_fd = -1, fd_inner;

 	key_size	= sizeof(__u32);
 	value_size	= sizeof(__u32);
@@ -160,6 +216,16 @@ bool bpf_probe_map_type(enum bpf_map_type map_type, __u32 ifindex)
 	case BPF_MAP_TYPE_STACK:
 		key_size	= 0;
 		break;
+	case BPF_MAP_TYPE_SK_STORAGE:
+		btf_key_type_id = 1;
+		btf_value_type_id = 3;
+		value_size = 8;
+		max_entries = 0;
+		map_flags = BPF_F_NO_PREALLOC;
+		btf_fd = load_btf();
+		if (btf_fd < 0)
+			return false;
+		break;
 	case BPF_MAP_TYPE_UNSPEC:
 	case BPF_MAP_TYPE_HASH:
 	case BPF_MAP_TYPE_ARRAY:
@@ -205,11 +271,18 @@ bool bpf_probe_map_type(enum bpf_map_type map_type, __u32 ifindex)
 		attr.max_entries = max_entries;
 		attr.map_flags = map_flags;
 		attr.map_ifindex = ifindex;
+		if (btf_fd >= 0) {
+			attr.btf_fd = btf_fd;
+			attr.btf_key_type_id = btf_key_type_id;
+			attr.btf_value_type_id = btf_value_type_id;
+		}

 		fd = bpf_create_map_xattr(&attr);
 	}
 	if (fd >= 0)
 		close(fd);
+	if (btf_fd >= 0)
+		close(btf_fd);

 	return fd >= 0;
 }
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -74,6 +74,8 @@ all: $(TEST_CUSTOM_PROGS)
 $(OUTPUT)/urandom_read: $(OUTPUT)/%: %.c
 	$(CC) -o $@ $< -Wl,--build-id

+$(OUTPUT)/test_maps: map_tests/*.c
+
 BPFOBJ := $(OUTPUT)/libbpf.a

 $(TEST_GEN_PROGS): $(BPFOBJ)
@@ -232,6 +234,27 @@ $(PROG_TESTS_H): $(PROG_TESTS_DIR) $(PROG_TESTS_FILES)
 		  echo '#endif' \
 		 ) > $(PROG_TESTS_H))

+TEST_MAPS_CFLAGS := -I. -I$(OUTPUT)
+MAP_TESTS_DIR = $(OUTPUT)/map_tests
+$(MAP_TESTS_DIR):
+	mkdir -p $@
+MAP_TESTS_H := $(MAP_TESTS_DIR)/tests.h
+test_maps.c: $(MAP_TESTS_H)
+$(OUTPUT)/test_maps: CFLAGS += $(TEST_MAPS_CFLAGS)
+MAP_TESTS_FILES := $(wildcard map_tests/*.c)
+$(MAP_TESTS_H): $(MAP_TESTS_DIR) $(MAP_TESTS_FILES)
+	$(shell ( cd map_tests/; \
+		  echo '/* Generated header, do not edit */'; \
+		  echo '#ifdef DECLARE'; \
+		  ls *.c 2> /dev/null | \
+			sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \
+		  echo '#endif'; \
+		  echo '#ifdef CALL'; \
+		  ls *.c 2> /dev/null | \
+			sed -e 's@\([^\.]*\)\.c@test_\1();@'; \
+		  echo '#endif' \
+		 ) > $(MAP_TESTS_H))
+
 VERIFIER_TESTS_H := $(OUTPUT)/verifier/tests.h
 test_verifier.c: $(VERIFIER_TESTS_H)
 $(OUTPUT)/test_verifier: CFLAGS += $(TEST_VERIFIER_CFLAGS)
@@ -251,4 +274,4 @@ $(OUTPUT)/verifier/tests.h: $(VERIFIER_TESTS_DIR) $(VERIFIER_TEST_FILES)
 		 ) > $(VERIFIER_TESTS_H))

 EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(ALU32_BUILD_DIR) \
-	$(VERIFIER_TESTS_H) $(PROG_TESTS_H)
+	$(VERIFIER_TESTS_H) $(PROG_TESTS_H) $(MAP_TESTS_H)
--- a/tools/testing/selftests/bpf/bpf_helpers.h
+++ b/tools/testing/selftests/bpf/bpf_helpers.h
@@ -211,6 +211,11 @@ static int (*bpf_strtol)(const char *buf, unsigned long long buf_len,
 static int (*bpf_strtoul)(const char *buf, unsigned long long buf_len,
 			  unsigned long long flags, unsigned long *res) =
 	(void *) BPF_FUNC_strtoul;
+static void *(*bpf_sk_storage_get)(void *map, struct bpf_sock *sk,
+				   void *value, __u64 flags) =
+	(void *) BPF_FUNC_sk_storage_get;
+static int (*bpf_sk_storage_delete)(void *map, struct bpf_sock *sk) =
+	(void *)BPF_FUNC_sk_storage_delete;

 /* llvm builtin functions that eBPF C program may use to
 * emit BPF_LD_ABS and BPF_LD_IND instructions
--- a/tools/testing/selftests/bpf/config
+++ b/tools/testing/selftests/bpf/config
@@ -33,3 +33,4 @@ CONFIG_MPLS=y
 CONFIG_NET_MPLS_GSO=m
 CONFIG_MPLS_ROUTING=m
 CONFIG_MPLS_IPTUNNEL=m
+CONFIG_IPV6_SIT=m
--- a/tools/testing/selftests/bpf/flow_dissector_load.c
+++ b/tools/testing/selftests/bpf/flow_dissector_load.c
@@ -26,7 +26,7 @@ static void load_and_attach_program(void)
 	struct bpf_object *obj;

 	ret = bpf_flow_load(&obj, cfg_path_name, cfg_section_name,
-			    cfg_map_name, &prog_fd);
+			    cfg_map_name, NULL, &prog_fd, NULL);
 	if (ret)
 		error(1, 0, "bpf_flow_load %s", cfg_path_name);

--- a/tools/testing/selftests/bpf/flow_dissector_load.h
+++ b/tools/testing/selftests/bpf/flow_dissector_load.h
@@ -9,10 +9,12 @@ static inline int bpf_flow_load(struct bpf_object **obj,
 				const char *path,
 				const char *section_name,
 				const char *map_name,
-				int *prog_fd)
+				const char *keys_map_name,
+				int *prog_fd,
+				int *keys_fd)
 {
 	struct bpf_program *prog, *main_prog;
-	struct bpf_map *prog_array;
+	struct bpf_map *prog_array, *keys;
 	int prog_array_fd;
 	int ret, fd, i;

@@ -23,19 +25,29 @@ static inline int bpf_flow_load(struct bpf_object **obj,

 	main_prog = bpf_object__find_program_by_title(*obj, section_name);
 	if (!main_prog)
-		return ret;
+		return -1;

 	*prog_fd = bpf_program__fd(main_prog);
 	if (*prog_fd < 0)
-		return ret;
+		return -1;

 	prog_array = bpf_object__find_map_by_name(*obj, map_name);
 	if (!prog_array)
-		return ret;
+		return -1;

 	prog_array_fd = bpf_map__fd(prog_array);
 	if (prog_array_fd < 0)
-		return ret;
+		return -1;
+
+	if (keys_map_name && keys_fd) {
+		keys = bpf_object__find_map_by_name(*obj, keys_map_name);
+		if (!keys)
+			return -1;
+
+		*keys_fd = bpf_map__fd(keys);
+		if (*keys_fd < 0)
+			return -1;
+	}

 	i = 0;
 	bpf_object__for_each_program(prog, *obj) {
--- a/tools/testing/selftests/bpf/map_tests/sk_storage_map.c
+++ b/tools/testing/selftests/bpf/map_tests/sk_storage_map.c
@@ -0,0 +1,629 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2019 Facebook  */
+#include <linux/compiler.h>
+#include <linux/err.h>
+
+#include <sys/resource.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <linux/btf.h>
+#include <unistd.h>
+#include <signal.h>
+#include <errno.h>
+#include <string.h>
+#include <pthread.h>
+
+#include <bpf/bpf.h>
+#include <bpf/libbpf.h>
+
+#include <test_btf.h>
+#include <test_maps.h>
+
+static struct bpf_create_map_attr xattr = {
+	.name = "sk_storage_map",
+	.map_type = BPF_MAP_TYPE_SK_STORAGE,
+	.map_flags = BPF_F_NO_PREALLOC,
+	.max_entries = 0,
+	.key_size = 4,
+	.value_size = 8,
+	.btf_key_type_id = 1,
+	.btf_value_type_id = 3,
+	.btf_fd = -1,
+};
+
+static unsigned int nr_sk_threads_done;
+static unsigned int nr_sk_threads_err;
+static unsigned int nr_sk_per_thread = 4096;
+static unsigned int nr_sk_threads = 4;
+static int sk_storage_map = -1;
+static unsigned int stop;
+static int runtime_s = 5;
+
+static bool is_stopped(void)
+{
+	return READ_ONCE(stop);
+}
+
+static unsigned int threads_err(void)
+{
+	return READ_ONCE(nr_sk_threads_err);
+}
+
+static void notify_thread_err(void)
+{
+	__sync_add_and_fetch(&nr_sk_threads_err, 1);
+}
+
+static bool wait_for_threads_err(void)
+{
+	while (!is_stopped() && !threads_err())
+		usleep(500);
+
+	return !is_stopped();
+}
+
+static unsigned int threads_done(void)
+{
+	return READ_ONCE(nr_sk_threads_done);
+}
+
+static void notify_thread_done(void)
+{
+	__sync_add_and_fetch(&nr_sk_threads_done, 1);
+}
+
+static void notify_thread_redo(void)
+{
+	__sync_sub_and_fetch(&nr_sk_threads_done, 1);
+}
+
+static bool wait_for_threads_done(void)
+{
+	while (threads_done() != nr_sk_threads && !is_stopped() &&
+	       !threads_err())
+		usleep(50);
+
+	return !is_stopped() && !threads_err();
+}
+
+static bool wait_for_threads_redo(void)
+{
+	while (threads_done() && !is_stopped() && !threads_err())
+		usleep(50);
+
+	return !is_stopped() && !threads_err();
+}
+
+static bool wait_for_map(void)
+{
+	while (READ_ONCE(sk_storage_map) == -1 && !is_stopped())
+		usleep(50);
+
+	return !is_stopped();
+}
+
+static bool wait_for_map_close(void)
+{
+	while (READ_ONCE(sk_storage_map) != -1 && !is_stopped())
+		;
+
+	return !is_stopped();
+}
+
+static int load_btf(void)
+{
+	const char btf_str_sec[] = "\0bpf_spin_lock\0val\0cnt\0l";
+	__u32 btf_raw_types[] = {
+		/* int */
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
+		/* struct bpf_spin_lock */                      /* [2] */
+		BTF_TYPE_ENC(1, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), 4),
+		BTF_MEMBER_ENC(15, 1, 0), /* int val; */
+		/* struct val */                                /* [3] */
+		BTF_TYPE_ENC(15, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), 8),
+		BTF_MEMBER_ENC(19, 1, 0), /* int cnt; */
+		BTF_MEMBER_ENC(23, 2, 32),/* struct bpf_spin_lock l; */
+	};
+	struct btf_header btf_hdr = {
+		.magic = BTF_MAGIC,
+		.version = BTF_VERSION,
+		.hdr_len = sizeof(struct btf_header),
+		.type_len = sizeof(btf_raw_types),
+		.str_off = sizeof(btf_raw_types),
+		.str_len = sizeof(btf_str_sec),
+	};
+	__u8 raw_btf[sizeof(struct btf_header) + sizeof(btf_raw_types) +
+		     sizeof(btf_str_sec)];
+
+	memcpy(raw_btf, &btf_hdr, sizeof(btf_hdr));
+	memcpy(raw_btf + sizeof(btf_hdr), btf_raw_types, sizeof(btf_raw_types));
+	memcpy(raw_btf + sizeof(btf_hdr) + sizeof(btf_raw_types),
+	       btf_str_sec, sizeof(btf_str_sec));
+
+	return bpf_load_btf(raw_btf, sizeof(raw_btf), 0, 0, 0);
+}
+
+static int create_sk_storage_map(void)
+{
+	int btf_fd, map_fd;
+
+	btf_fd = load_btf();
+	CHECK(btf_fd == -1, "bpf_load_btf", "btf_fd:%d errno:%d\n",
+	      btf_fd, errno);
+	xattr.btf_fd = btf_fd;
+
+	map_fd = bpf_create_map_xattr(&xattr);
+	xattr.btf_fd = -1;
+	close(btf_fd);
+	CHECK(map_fd == -1,
+	      "bpf_create_map_xattr()", "errno:%d\n", errno);
+
+	return map_fd;
+}
+
+static void *insert_close_thread(void *arg)
+{
+	struct {
+		int cnt;
+		int lock;
+	} value = { .cnt = 0xeB9F, .lock = 0, };
+	int i, map_fd, err, *sk_fds;
+
+	sk_fds = malloc(sizeof(*sk_fds) * nr_sk_per_thread);
+	if (!sk_fds) {
+		notify_thread_err();
+		return ERR_PTR(-ENOMEM);
+	}
+
+	for (i = 0; i < nr_sk_per_thread; i++)
+		sk_fds[i] = -1;
+
+	while (!is_stopped()) {
+		if (!wait_for_map())
+			goto close_all;
+
+		map_fd = READ_ONCE(sk_storage_map);
+		for (i = 0; i < nr_sk_per_thread && !is_stopped(); i++) {
+			sk_fds[i] = socket(AF_INET6, SOCK_STREAM, 0);
+			if (sk_fds[i] == -1) {
+				err = -errno;
+				fprintf(stderr, "socket(): errno:%d\n", errno);
+				goto errout;
+			}
+			err = bpf_map_update_elem(map_fd, &sk_fds[i], &value,
+						  BPF_NOEXIST);
+			if (err) {
+				err = -errno;
+				fprintf(stderr,
+					"bpf_map_update_elem(): errno:%d\n",
+					errno);
+				goto errout;
+			}
+		}
+
+		notify_thread_done();
+		wait_for_map_close();
+
+close_all:
+		for (i = 0; i < nr_sk_per_thread; i++) {
+			close(sk_fds[i]);
+			sk_fds[i] = -1;
+		}
+
+		notify_thread_redo();
+	}
+
+	free(sk_fds);
+	return NULL;
+
+errout:
+	for (i = 0; i < nr_sk_per_thread && sk_fds[i] != -1; i++)
+		close(sk_fds[i]);
+	free(sk_fds);
+	notify_thread_err();
+	return ERR_PTR(err);
+}
+
+static int do_sk_storage_map_stress_free(void)
+{
+	int i, map_fd = -1, err = 0, nr_threads_created = 0;
+	pthread_t *sk_thread_ids;
+	void *thread_ret;
+
+	sk_thread_ids = malloc(sizeof(pthread_t) * nr_sk_threads);
+	if (!sk_thread_ids) {
+		fprintf(stderr, "malloc(sk_threads): NULL\n");
+		return -ENOMEM;
+	}
+
+	for (i = 0; i < nr_sk_threads; i++) {
+		err = pthread_create(&sk_thread_ids[i], NULL,
+				     insert_close_thread, NULL);
+		if (err) {
+			err = -errno;
+			goto done;
+		}
+		nr_threads_created++;
+	}
+
+	while (!is_stopped()) {
+		map_fd = create_sk_storage_map();
+		WRITE_ONCE(sk_storage_map, map_fd);
+
+		if (!wait_for_threads_done())
+			break;
+
+		WRITE_ONCE(sk_storage_map, -1);
+		close(map_fd);
+		map_fd = -1;
+
+		if (!wait_for_threads_redo())
+			break;
+	}
+
+done:
+	WRITE_ONCE(stop, 1);
+	for (i = 0; i < nr_threads_created; i++) {
+		pthread_join(sk_thread_ids[i], &thread_ret);
+		if (IS_ERR(thread_ret) && !err) {
+			err = PTR_ERR(thread_ret);
+			fprintf(stderr, "threads#%u: err:%d\n", i, err);
+		}
+	}
+	free(sk_thread_ids);
+
+	if (map_fd != -1)
+		close(map_fd);
+
+	return err;
+}
+
+static void *update_thread(void *arg)
+{
+	struct {
+		int cnt;
+		int lock;
+	} value = { .cnt = 0xeB9F, .lock = 0, };
+	int map_fd = READ_ONCE(sk_storage_map);
+	int sk_fd = *(int *)arg;
+	int err = 0; /* Suppress compiler false alarm */
+
+	while (!is_stopped()) {
+		err = bpf_map_update_elem(map_fd, &sk_fd, &value, 0);
+		if (err && errno != EAGAIN) {
+			err = -errno;
+			fprintf(stderr, "bpf_map_update_elem: %d %d\n",
+				err, errno);
+			break;
+		}
+	}
+
+	if (!is_stopped()) {
+		notify_thread_err();
+		return ERR_PTR(err);
+	}
+
+	return NULL;
+}
+
+static void *delete_thread(void *arg)
+{
+	int map_fd = READ_ONCE(sk_storage_map);
+	int sk_fd = *(int *)arg;
+	int err = 0; /* Suppress compiler false alarm */
+
+	while (!is_stopped()) {
+		err = bpf_map_delete_elem(map_fd, &sk_fd);
+		if (err && errno != ENOENT) {
+			err = -errno;
+			fprintf(stderr, "bpf_map_delete_elem: %d %d\n",
+				err, errno);
+			break;
+		}
+	}
+
+	if (!is_stopped()) {
+		notify_thread_err();
+		return ERR_PTR(err);
+	}
+
+	return NULL;
+}
+
+static int do_sk_storage_map_stress_change(void)
+{
+	int i, sk_fd, map_fd = -1, err = 0, nr_threads_created = 0;
+	pthread_t *sk_thread_ids;
+	void *thread_ret;
+
+	sk_thread_ids = malloc(sizeof(pthread_t) * nr_sk_threads);
+	if (!sk_thread_ids) {
+		fprintf(stderr, "malloc(sk_threads): NULL\n");
+		return -ENOMEM;
+	}
+
+	sk_fd = socket(AF_INET6, SOCK_STREAM, 0);
+	if (sk_fd == -1) {
+		err = -errno;
+		goto done;
+	}
+
+	map_fd = create_sk_storage_map();
+	WRITE_ONCE(sk_storage_map, map_fd);
+
+	for (i = 0; i < nr_sk_threads; i++) {
+		if (i & 0x1)
+			err = pthread_create(&sk_thread_ids[i], NULL,
+					     update_thread, &sk_fd);
+		else
+			err = pthread_create(&sk_thread_ids[i], NULL,
+					     delete_thread, &sk_fd);
+		if (err) {
+			err = -errno;
+			goto done;
+		}
+		nr_threads_created++;
+	}
+
+	wait_for_threads_err();
+
+done:
+	WRITE_ONCE(stop, 1);
+	for (i = 0; i < nr_threads_created; i++) {
+		pthread_join(sk_thread_ids[i], &thread_ret);
+		if (IS_ERR(thread_ret) && !err) {
+			err = PTR_ERR(thread_ret);
+			fprintf(stderr, "threads#%u: err:%d\n", i, err);
+		}
+	}
+	free(sk_thread_ids);
+
+	if (sk_fd != -1)
+		close(sk_fd);
+	close(map_fd);
+
+	return err;
+}
+
+static void stop_handler(int signum)
+{
+	if (signum != SIGALRM)
+		printf("stopping...\n");
+	WRITE_ONCE(stop, 1);
+}
+
+#define BPF_SK_STORAGE_MAP_TEST_NR_THREADS "BPF_SK_STORAGE_MAP_TEST_NR_THREADS"
+#define BPF_SK_STORAGE_MAP_TEST_SK_PER_THREAD "BPF_SK_STORAGE_MAP_TEST_SK_PER_THREAD"
+#define BPF_SK_STORAGE_MAP_TEST_RUNTIME_S "BPF_SK_STORAGE_MAP_TEST_RUNTIME_S"
+#define BPF_SK_STORAGE_MAP_TEST_NAME "BPF_SK_STORAGE_MAP_TEST_NAME"
+
+static void test_sk_storage_map_stress_free(void)
+{
+	struct rlimit rlim_old, rlim_new = {};
+	int err;
+
+	getrlimit(RLIMIT_NOFILE, &rlim_old);
+
+	signal(SIGTERM, stop_handler);
+	signal(SIGINT, stop_handler);
+	if (runtime_s > 0) {
+		signal(SIGALRM, stop_handler);
+		alarm(runtime_s);
+	}
+
+	if (rlim_old.rlim_cur < nr_sk_threads * nr_sk_per_thread) {
+		rlim_new.rlim_cur = nr_sk_threads * nr_sk_per_thread + 128;
+		rlim_new.rlim_max = rlim_new.rlim_cur + 128;
+		err = setrlimit(RLIMIT_NOFILE, &rlim_new);
+		CHECK(err, "setrlimit(RLIMIT_NOFILE)", "rlim_new:%lu errno:%d",
+		      rlim_new.rlim_cur, errno);
+	}
+
+	err = do_sk_storage_map_stress_free();
+
+	signal(SIGTERM, SIG_DFL);
+	signal(SIGINT, SIG_DFL);
+	if (runtime_s > 0) {
+		signal(SIGALRM, SIG_DFL);
+		alarm(0);
+	}
+
+	if (rlim_new.rlim_cur)
+		setrlimit(RLIMIT_NOFILE, &rlim_old);
+
+	CHECK(err, "test_sk_storage_map_stress_free", "err:%d\n", err);
+}
+
+static void test_sk_storage_map_stress_change(void)
+{
+	int err;
+
+	signal(SIGTERM, stop_handler);
+	signal(SIGINT, stop_handler);
+	if (runtime_s > 0) {
+		signal(SIGALRM, stop_handler);
+		alarm(runtime_s);
+	}
+
+	err = do_sk_storage_map_stress_change();
+
+	signal(SIGTERM, SIG_DFL);
+	signal(SIGINT, SIG_DFL);
+	if (runtime_s > 0) {
+		signal(SIGALRM, SIG_DFL);
+		alarm(0);
+	}
+
+	CHECK(err, "test_sk_storage_map_stress_change", "err:%d\n", err);
+}
+
+static void test_sk_storage_map_basic(void)
+{
+	struct {
+		int cnt;
+		int lock;
+	} value = { .cnt = 0xeB9f, .lock = 0, }, lookup_value;
+	struct bpf_create_map_attr bad_xattr;
+	int btf_fd, map_fd, sk_fd, err;
+
+	btf_fd = load_btf();
+	CHECK(btf_fd == -1, "bpf_load_btf", "btf_fd:%d errno:%d\n",
+	      btf_fd, errno);
+	xattr.btf_fd = btf_fd;
+
+	sk_fd = socket(AF_INET6, SOCK_STREAM, 0);
+	CHECK(sk_fd == -1, "socket()", "sk_fd:%d errno:%d\n",
+	      sk_fd, errno);
+
+	map_fd = bpf_create_map_xattr(&xattr);
+	CHECK(map_fd == -1, "bpf_create_map_xattr(good_xattr)",
+	      "map_fd:%d errno:%d\n", map_fd, errno);
+
+	/* Add new elem */
+	memcpy(&lookup_value, &value, sizeof(value));
+	err = bpf_map_update_elem(map_fd, &sk_fd, &value,
+				  BPF_NOEXIST | BPF_F_LOCK);
+	CHECK(err, "bpf_map_update_elem(BPF_NOEXIST|BPF_F_LOCK)",
+	      "err:%d errno:%d\n", err, errno);
+	err = bpf_map_lookup_elem_flags(map_fd, &sk_fd, &lookup_value,
+					BPF_F_LOCK);
+	CHECK(err || lookup_value.cnt != value.cnt,
+	      "bpf_map_lookup_elem_flags(BPF_F_LOCK)",
+	      "err:%d errno:%d cnt:%x(%x)\n",
+	      err, errno, lookup_value.cnt, value.cnt);
+
+	/* Bump the cnt and update with BPF_EXIST | BPF_F_LOCK */
+	value.cnt += 1;
+	err = bpf_map_update_elem(map_fd, &sk_fd, &value,
+				  BPF_EXIST | BPF_F_LOCK);
+	CHECK(err, "bpf_map_update_elem(BPF_EXIST|BPF_F_LOCK)",
+	      "err:%d errno:%d\n", err, errno);
+	err = bpf_map_lookup_elem_flags(map_fd, &sk_fd, &lookup_value,
+					BPF_F_LOCK);
+	CHECK(err || lookup_value.cnt != value.cnt,
+	      "bpf_map_lookup_elem_flags(BPF_F_LOCK)",
+	      "err:%d errno:%d cnt:%x(%x)\n",
+	      err, errno, lookup_value.cnt, value.cnt);
+
+	/* Bump the cnt and update with BPF_EXIST */
+	value.cnt += 1;
+	err = bpf_map_update_elem(map_fd, &sk_fd, &value, BPF_EXIST);
+	CHECK(err, "bpf_map_update_elem(BPF_EXIST)",
+	      "err:%d errno:%d\n", err, errno);
+	err = bpf_map_lookup_elem_flags(map_fd, &sk_fd, &lookup_value,
+					BPF_F_LOCK);
+	CHECK(err || lookup_value.cnt != value.cnt,
+	      "bpf_map_lookup_elem_flags(BPF_F_LOCK)",
+	      "err:%d errno:%d cnt:%x(%x)\n",
+	      err, errno, lookup_value.cnt, value.cnt);
+
+	/* Update with BPF_NOEXIST */
+	value.cnt += 1;
+	err = bpf_map_update_elem(map_fd, &sk_fd, &value,
+				  BPF_NOEXIST | BPF_F_LOCK);
+	CHECK(!err || errno != EEXIST,
+	      "bpf_map_update_elem(BPF_NOEXIST|BPF_F_LOCK)",
+	      "err:%d errno:%d\n", err, errno);
+	err = bpf_map_update_elem(map_fd, &sk_fd, &value, BPF_NOEXIST);
+	CHECK(!err || errno != EEXIST, "bpf_map_update_elem(BPF_NOEXIST)",
+	      "err:%d errno:%d\n", err, errno);
+	value.cnt -= 1;
+	err = bpf_map_lookup_elem_flags(map_fd, &sk_fd, &lookup_value,
+					BPF_F_LOCK);
+	CHECK(err || lookup_value.cnt != value.cnt,
+	      "bpf_map_lookup_elem_flags(BPF_F_LOCK)",
+	      "err:%d errno:%d cnt:%x(%x)\n",
+	      err, errno, lookup_value.cnt, value.cnt);
+
+	/* Bump the cnt again and update with map_flags == 0 */
+	value.cnt += 1;
+	err = bpf_map_update_elem(map_fd, &sk_fd, &value, 0);
+	CHECK(err, "bpf_map_update_elem()", "err:%d errno:%d\n",
+	      err, errno);
+	err = bpf_map_lookup_elem_flags(map_fd, &sk_fd, &lookup_value,
+					BPF_F_LOCK);
+	CHECK(err || lookup_value.cnt != value.cnt,
+	      "bpf_map_lookup_elem_flags(BPF_F_LOCK)",
+	      "err:%d errno:%d cnt:%x(%x)\n",
+	      err, errno, lookup_value.cnt, value.cnt);
+
+	/* Test delete elem */
+	err = bpf_map_delete_elem(map_fd, &sk_fd);
+	CHECK(err, "bpf_map_delete_elem()", "err:%d errno:%d\n",
+	      err, errno);
+	err = bpf_map_lookup_elem_flags(map_fd, &sk_fd, &lookup_value,
+					BPF_F_LOCK);
+	CHECK(!err || errno != ENOENT,
+	      "bpf_map_lookup_elem_flags(BPF_F_LOCK)",
+	      "err:%d errno:%d\n", err, errno);
+	err = bpf_map_delete_elem(map_fd, &sk_fd);
+	CHECK(!err || errno != ENOENT, "bpf_map_delete_elem()",
+	      "err:%d errno:%d\n", err, errno);
+
+	memcpy(&bad_xattr, &xattr, sizeof(xattr));
+	bad_xattr.btf_key_type_id = 0;
+	err = bpf_create_map_xattr(&bad_xattr);
+	CHECK(!err || errno != EINVAL, "bap_create_map_xattr(bad_xattr)",
+	      "err:%d errno:%d\n", err, errno);
+
+	memcpy(&bad_xattr, &xattr, sizeof(xattr));
+	bad_xattr.btf_key_type_id = 3;
+	err = bpf_create_map_xattr(&bad_xattr);
+	CHECK(!err || errno != EINVAL, "bap_create_map_xattr(bad_xattr)",
+	      "err:%d errno:%d\n", err, errno);
+
+	memcpy(&bad_xattr, &xattr, sizeof(xattr));
+	bad_xattr.max_entries = 1;
+	err = bpf_create_map_xattr(&bad_xattr);
+	CHECK(!err || errno != EINVAL, "bap_create_map_xattr(bad_xattr)",
+	      "err:%d errno:%d\n", err, errno);
+
+	memcpy(&bad_xattr, &xattr, sizeof(xattr));
+	bad_xattr.map_flags = 0;
+	err = bpf_create_map_xattr(&bad_xattr);
+	CHECK(!err || errno != EINVAL, "bap_create_map_xattr(bad_xattr)",
+	      "err:%d errno:%d\n", err, errno);
+
+	xattr.btf_fd = -1;
+	close(btf_fd);
+	close(map_fd);
+	close(sk_fd);
+}
+
+void test_sk_storage_map(void)
+{
+	const char *test_name, *env_opt;
+	bool test_ran = false;
+
+	test_name = getenv(BPF_SK_STORAGE_MAP_TEST_NAME);
+
+	env_opt = getenv(BPF_SK_STORAGE_MAP_TEST_NR_THREADS);
+	if (env_opt)
+		nr_sk_threads = atoi(env_opt);
+
+	env_opt = getenv(BPF_SK_STORAGE_MAP_TEST_SK_PER_THREAD);
+	if (env_opt)
+		nr_sk_per_thread = atoi(env_opt);
+
+	env_opt = getenv(BPF_SK_STORAGE_MAP_TEST_RUNTIME_S);
+	if (env_opt)
+		runtime_s = atoi(env_opt);
+
+	if (!test_name || !strcmp(test_name, "basic")) {
+		test_sk_storage_map_basic();
+		test_ran = true;
+	}
+	if (!test_name || !strcmp(test_name, "stress_free")) {
+		test_sk_storage_map_stress_free();
+		test_ran = true;
+	}
+	if (!test_name || !strcmp(test_name, "stress_change")) {
+		test_sk_storage_map_stress_change();
+		test_ran = true;
+	}
+
+	if (test_ran)
+		printf("%s:PASS\n", __func__);
+	else
+		CHECK(1, "Invalid test_name", "%s\n", test_name);
+}
--- a/tools/testing/selftests/bpf/prog_tests/flow_dissector.c
+++ b/tools/testing/selftests/bpf/prog_tests/flow_dissector.c
@@ -1,5 +1,8 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <test_progs.h>
+#include <error.h>
+#include <linux/if.h>
+#include <linux/if_tun.h>

 #define CHECK_FLOW_KEYS(desc, got, expected)				\
 	CHECK_ATTR(memcmp(&got, &expected, sizeof(got)) != 0,		\
@@ -79,8 +82,8 @@ struct test tests[] = {
 			.tcp.doff = 5,
 		},
 		.keys = {
-			.nhoff = 0,
-			.thoff = sizeof(struct iphdr),
+			.nhoff = ETH_HLEN,
+			.thoff = ETH_HLEN + sizeof(struct iphdr),
 			.addr_proto = ETH_P_IP,
 			.ip_proto = IPPROTO_TCP,
 			.n_proto = __bpf_constant_htons(ETH_P_IP),
@@ -95,8 +98,8 @@ struct test tests[] = {
 			.tcp.doff = 5,
 		},
 		.keys = {
-			.nhoff = 0,
-			.thoff = sizeof(struct ipv6hdr),
+			.nhoff = ETH_HLEN,
+			.thoff = ETH_HLEN + sizeof(struct ipv6hdr),
 			.addr_proto = ETH_P_IPV6,
 			.ip_proto = IPPROTO_TCP,
 			.n_proto = __bpf_constant_htons(ETH_P_IPV6),
@@ -113,8 +116,8 @@ struct test tests[] = {
 			.tcp.doff = 5,
 		},
 		.keys = {
-			.nhoff = VLAN_HLEN,
-			.thoff = VLAN_HLEN + sizeof(struct iphdr),
+			.nhoff = ETH_HLEN + VLAN_HLEN,
+			.thoff = ETH_HLEN + VLAN_HLEN + sizeof(struct iphdr),
 			.addr_proto = ETH_P_IP,
 			.ip_proto = IPPROTO_TCP,
 			.n_proto = __bpf_constant_htons(ETH_P_IP),
@@ -131,8 +134,9 @@ struct test tests[] = {
 			.tcp.doff = 5,
 		},
 		.keys = {
-			.nhoff = VLAN_HLEN * 2,
-			.thoff = VLAN_HLEN * 2 + sizeof(struct ipv6hdr),
+			.nhoff = ETH_HLEN + VLAN_HLEN * 2,
+			.thoff = ETH_HLEN + VLAN_HLEN * 2 +
+				sizeof(struct ipv6hdr),
 			.addr_proto = ETH_P_IPV6,
 			.ip_proto = IPPROTO_TCP,
 			.n_proto = __bpf_constant_htons(ETH_P_IPV6),
@@ -140,13 +144,73 @@ struct test tests[] = {
 	},
 };

+static int create_tap(const char *ifname)
+{
+	struct ifreq ifr = {
+		.ifr_flags = IFF_TAP | IFF_NO_PI | IFF_NAPI | IFF_NAPI_FRAGS,
+	};
+	int fd, ret;
+
+	strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
+
+	fd = open("/dev/net/tun", O_RDWR);
+	if (fd < 0)
+		return -1;
+
+	ret = ioctl(fd, TUNSETIFF, &ifr);
+	if (ret)
+		return -1;
+
+	return fd;
+}
+
+static int tx_tap(int fd, void *pkt, size_t len)
+{
+	struct iovec iov[] = {
+		{
+			.iov_len = len,
+			.iov_base = pkt,
+		},
+	};
+	return writev(fd, iov, ARRAY_SIZE(iov));
+}
+
+static int ifup(const char *ifname)
+{
+	struct ifreq ifr = {};
+	int sk, ret;
+
+	strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
+
+	sk = socket(PF_INET, SOCK_DGRAM, 0);
+	if (sk < 0)
+		return -1;
+
+	ret = ioctl(sk, SIOCGIFFLAGS, &ifr);
+	if (ret) {
+		close(sk);
+		return -1;
+	}
+
+	ifr.ifr_flags |= IFF_UP;
+	ret = ioctl(sk, SIOCSIFFLAGS, &ifr);
+	if (ret) {
+		close(sk);
+		return -1;
+	}
+
+	close(sk);
+	return 0;
+}
+
 void test_flow_dissector(void)
 {
+	int i, err, prog_fd, keys_fd = -1, tap_fd;
 	struct bpf_object *obj;
-	int i, err, prog_fd;
+	__u32 duration = 0;

 	err = bpf_flow_load(&obj, "./bpf_flow.o", "flow_dissector",
-			    "jmp_table", &prog_fd);
+			    "jmp_table", "last_dissection", &prog_fd, &keys_fd);
 	if (err) {
 		error_cnt++;
 		return;
@@ -171,5 +235,34 @@ void test_flow_dissector(void)
 		CHECK_FLOW_KEYS(tests[i].name, flow_keys, tests[i].keys);
 	}

+	/* Do the same tests but for skb-less flow dissector.
+	 * We use a known path in the net/tun driver that calls
+	 * eth_get_headlen and we manually export bpf_flow_keys
+	 * via BPF map in this case.
+	 */
+
+	err = bpf_prog_attach(prog_fd, 0, BPF_FLOW_DISSECTOR, 0);
+	CHECK(err, "bpf_prog_attach", "err %d errno %d", err, errno);
+
+	tap_fd = create_tap("tap0");
+	CHECK(tap_fd < 0, "create_tap", "tap_fd %d errno %d", tap_fd, errno);
+	err = ifup("tap0");
+	CHECK(err, "ifup", "err %d errno %d", err, errno);
+
+	for (i = 0; i < ARRAY_SIZE(tests); i++) {
+		struct bpf_flow_keys flow_keys = {};
+		struct bpf_prog_test_run_attr tattr = {};
+		__u32 key = 0;
+
+		err = tx_tap(tap_fd, &tests[i].pkt, sizeof(tests[i].pkt));
+		CHECK(err < 0, "tx_tap", "err %d errno %d", err, errno);
+
+		err = bpf_map_lookup_elem(keys_fd, &key, &flow_keys);
+		CHECK_ATTR(err, tests[i].name, "bpf_map_lookup_elem %d\n", err);
+
+		CHECK_ATTR(err, tests[i].name, "skb-less err %d\n", err);
+		CHECK_FLOW_KEYS(tests[i].name, flow_keys, tests[i].keys);
+	}
+
 	bpf_object__close(obj);
 }
--- a/tools/testing/selftests/bpf/prog_tests/flow_dissector_load_bytes.c
+++ b/tools/testing/selftests/bpf/prog_tests/flow_dissector_load_bytes.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <test_progs.h>
+
+void test_flow_dissector_load_bytes(void)
+{
+	struct bpf_flow_keys flow_keys;
+	__u32 duration = 0, retval, size;
+	struct bpf_insn prog[] = {
+		// BPF_REG_1 - 1st argument: context
+		// BPF_REG_2 - 2nd argument: offset, start at first byte
+		BPF_MOV64_IMM(BPF_REG_2, 0),
+		// BPF_REG_3 - 3rd argument: destination, reserve byte on stack
+		BPF_ALU64_REG(BPF_MOV, BPF_REG_3, BPF_REG_10),
+		BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, -1),
+		// BPF_REG_4 - 4th argument: copy one byte
+		BPF_MOV64_IMM(BPF_REG_4, 1),
+		// bpf_skb_load_bytes(ctx, sizeof(pkt_v4), ptr, 1)
+		BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
+			     BPF_FUNC_skb_load_bytes),
+		BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
+		// if (ret == 0) return BPF_DROP (2)
+		BPF_MOV64_IMM(BPF_REG_0, BPF_DROP),
+		BPF_EXIT_INSN(),
+		// if (ret != 0) return BPF_OK (0)
+		BPF_MOV64_IMM(BPF_REG_0, BPF_OK),
+		BPF_EXIT_INSN(),
+	};
+	int fd, err;
+
+	/* make sure bpf_skb_load_bytes is not allowed from skb-less context
+	 */
+	fd = bpf_load_program(BPF_PROG_TYPE_FLOW_DISSECTOR, prog,
+			      ARRAY_SIZE(prog), "GPL", 0, NULL, 0);
+	CHECK(fd < 0,
+	      "flow_dissector-bpf_skb_load_bytes-load",
+	      "fd %d errno %d\n",
+	      fd, errno);
+
+	err = bpf_prog_test_run(fd, 1, &pkt_v4, sizeof(pkt_v4),
+				&flow_keys, &size, &retval, &duration);
+	CHECK(size != sizeof(flow_keys) || err || retval != 1,
+	      "flow_dissector-bpf_skb_load_bytes",
+	      "err %d errno %d retval %d duration %d size %u/%zu\n",
+	      err, errno, retval, duration, size, sizeof(flow_keys));
+
+	if (fd >= -1)
+		close(fd);
+}
--- a/tools/testing/selftests/bpf/prog_tests/raw_tp_writable_reject_nbd_invalid.c
+++ b/tools/testing/selftests/bpf/prog_tests/raw_tp_writable_reject_nbd_invalid.c
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <test_progs.h>
+#include <linux/nbd.h>
+
+void test_raw_tp_writable_reject_nbd_invalid(void)
+{
+	__u32 duration = 0;
+	char error[4096];
+	int bpf_fd = -1, tp_fd = -1;
+
+	const struct bpf_insn program[] = {
+		/* r6 is our tp buffer */
+		BPF_LDX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
+		/* one byte beyond the end of the nbd_request struct */
+		BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_6,
+			    sizeof(struct nbd_request)),
+		BPF_EXIT_INSN(),
+	};
+
+	struct bpf_load_program_attr load_attr = {
+		.prog_type = BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE,
+		.license = "GPL v2",
+		.insns = program,
+		.insns_cnt = sizeof(program) / sizeof(struct bpf_insn),
+		.log_level = 2,
+	};
+
+	bpf_fd = bpf_load_program_xattr(&load_attr, error, sizeof(error));
+	if (CHECK(bpf_fd < 0, "bpf_raw_tracepoint_writable load",
+		  "failed: %d errno %d\n", bpf_fd, errno))
+		return;
+
+	tp_fd = bpf_raw_tracepoint_open("nbd_send_request", bpf_fd);
+	if (CHECK(tp_fd >= 0, "bpf_raw_tracepoint_writable open",
+		  "erroneously succeeded\n"))
+		goto out_bpffd;
+
+	close(tp_fd);
+out_bpffd:
+	close(bpf_fd);
+}
--- a/tools/testing/selftests/bpf/prog_tests/raw_tp_writable_test_run.c
+++ b/tools/testing/selftests/bpf/prog_tests/raw_tp_writable_test_run.c
@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <test_progs.h>
+#include <linux/nbd.h>
+
+void test_raw_tp_writable_test_run(void)
+{
+	__u32 duration = 0;
+	char error[4096];
+
+	const struct bpf_insn trace_program[] = {
+		BPF_LDX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
+		BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_6, 0),
+		BPF_MOV64_IMM(BPF_REG_0, 42),
+		BPF_STX_MEM(BPF_W, BPF_REG_6, BPF_REG_0, 0),
+		BPF_EXIT_INSN(),
+	};
+
+	struct bpf_load_program_attr load_attr = {
+		.prog_type = BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE,
+		.license = "GPL v2",
+		.insns = trace_program,
+		.insns_cnt = sizeof(trace_program) / sizeof(struct bpf_insn),
+		.log_level = 2,
+	};
+
+	int bpf_fd = bpf_load_program_xattr(&load_attr, error, sizeof(error));
+	if (CHECK(bpf_fd < 0, "bpf_raw_tracepoint_writable loaded",
+		  "failed: %d errno %d\n", bpf_fd, errno))
+		return;
+
+	const struct bpf_insn skb_program[] = {
+		BPF_MOV64_IMM(BPF_REG_0, 0),
+		BPF_EXIT_INSN(),
+	};
+
+	struct bpf_load_program_attr skb_load_attr = {
+		.prog_type = BPF_PROG_TYPE_SOCKET_FILTER,
+		.license = "GPL v2",
+		.insns = skb_program,
+		.insns_cnt = sizeof(skb_program) / sizeof(struct bpf_insn),
+	};
+
+	int filter_fd =
+		bpf_load_program_xattr(&skb_load_attr, error, sizeof(error));
+	if (CHECK(filter_fd < 0, "test_program_loaded", "failed: %d errno %d\n",
+		  filter_fd, errno))
+		goto out_bpffd;
+
+	int tp_fd = bpf_raw_tracepoint_open("bpf_test_finish", bpf_fd);
+	if (CHECK(tp_fd < 0, "bpf_raw_tracepoint_writable opened",
+		  "failed: %d errno %d\n", tp_fd, errno))
+		goto out_filterfd;
+
+	char test_skb[128] = {
+		0,
+	};
+
+	__u32 prog_ret;
+	int err = bpf_prog_test_run(filter_fd, 1, test_skb, sizeof(test_skb), 0,
+				    0, &prog_ret, 0);
+	CHECK(err != 42, "test_run",
+	      "tracepoint did not modify return value\n");
+	CHECK(prog_ret != 0, "test_run_ret",
+	      "socket_filter did not return 0\n");
+
+	close(tp_fd);
+
+	err = bpf_prog_test_run(filter_fd, 1, test_skb, sizeof(test_skb), 0, 0,
+				&prog_ret, 0);
+	CHECK(err != 0, "test_run_notrace",
+	      "test_run failed with %d errno %d\n", err, errno);
+	CHECK(prog_ret != 0, "test_run_ret_notrace",
+	      "socket_filter did not return 0\n");
+
+out_filterfd:
+	close(filter_fd);
+out_bpffd:
+	close(bpf_fd);
+}
--- a/tools/testing/selftests/bpf/progs/bpf_flow.c
+++ b/tools/testing/selftests/bpf/progs/bpf_flow.c
@@ -64,6 +64,25 @@ struct bpf_map_def SEC("maps") jmp_table = {
 	.max_entries = 8
 };

+struct bpf_map_def SEC("maps") last_dissection = {
+	.type = BPF_MAP_TYPE_ARRAY,
+	.key_size = sizeof(__u32),
+	.value_size = sizeof(struct bpf_flow_keys),
+	.max_entries = 1,
+};
+
+static __always_inline int export_flow_keys(struct bpf_flow_keys *keys,
+					    int ret)
+{
+	struct bpf_flow_keys *val;
+	__u32 key = 0;
+
+	val = bpf_map_lookup_elem(&last_dissection, &key);
+	if (val)
+		memcpy(val, keys, sizeof(*val));
+	return ret;
+}
+
 static __always_inline void *bpf_flow_dissect_get_header(struct __sk_buff *skb,
 							 __u16 hdr_size,
 							 void *buffer)
@@ -109,10 +128,10 @@ static __always_inline int parse_eth_proto(struct __sk_buff *skb, __be16 proto)
 		break;
 	default:
 		/* Protocol not supported */
-		return BPF_DROP;
+		return export_flow_keys(keys, BPF_DROP);
 	}

-	return BPF_DROP;
+	return export_flow_keys(keys, BPF_DROP);
 }

 SEC("flow_dissector")
@@ -139,8 +158,8 @@ static __always_inline int parse_ip_proto(struct __sk_buff *skb, __u8 proto)
 	case IPPROTO_ICMP:
 		icmp = bpf_flow_dissect_get_header(skb, sizeof(*icmp), &_icmp);
 		if (!icmp)
-			return BPF_DROP;
-		return BPF_OK;
+			return export_flow_keys(keys, BPF_DROP);
+		return export_flow_keys(keys, BPF_OK);
 	case IPPROTO_IPIP:
 		keys->is_encap = true;
 		return parse_eth_proto(skb, bpf_htons(ETH_P_IP));
@@ -150,11 +169,11 @@ static __always_inline int parse_ip_proto(struct __sk_buff *skb, __u8 proto)
 	case IPPROTO_GRE:
 		gre = bpf_flow_dissect_get_header(skb, sizeof(*gre), &_gre);
 		if (!gre)
-			return BPF_DROP;
+			return export_flow_keys(keys, BPF_DROP);

 		if (bpf_htons(gre->flags & GRE_VERSION))
 			/* Only inspect standard GRE packets with version 0 */
-			return BPF_OK;
+			return export_flow_keys(keys, BPF_OK);

 		keys->thoff += sizeof(*gre); /* Step over GRE Flags and Proto */
 		if (GRE_IS_CSUM(gre->flags))
@@ -170,7 +189,7 @@ static __always_inline int parse_ip_proto(struct __sk_buff *skb, __u8 proto)
 			eth = bpf_flow_dissect_get_header(skb, sizeof(*eth),
 							  &_eth);
 			if (!eth)
-				return BPF_DROP;
+				return export_flow_keys(keys, BPF_DROP);

 			keys->thoff += sizeof(*eth);

@@ -181,31 +200,31 @@ static __always_inline int parse_ip_proto(struct __sk_buff *skb, __u8 proto)
 	case IPPROTO_TCP:
 		tcp = bpf_flow_dissect_get_header(skb, sizeof(*tcp), &_tcp);
 		if (!tcp)
-			return BPF_DROP;
+			return export_flow_keys(keys, BPF_DROP);

 		if (tcp->doff < 5)
-			return BPF_DROP;
+			return export_flow_keys(keys, BPF_DROP);

 		if ((__u8 *)tcp + (tcp->doff << 2) > data_end)
-			return BPF_DROP;
+			return export_flow_keys(keys, BPF_DROP);

 		keys->sport = tcp->source;
 		keys->dport = tcp->dest;
-		return BPF_OK;
+		return export_flow_keys(keys, BPF_OK);
 	case IPPROTO_UDP:
 	case IPPROTO_UDPLITE:
 		udp = bpf_flow_dissect_get_header(skb, sizeof(*udp), &_udp);
 		if (!udp)
-			return BPF_DROP;
+			return export_flow_keys(keys, BPF_DROP);

 		keys->sport = udp->source;
 		keys->dport = udp->dest;
-		return BPF_OK;
+		return export_flow_keys(keys, BPF_OK);
 	default:
-		return BPF_DROP;
+		return export_flow_keys(keys, BPF_DROP);
 	}

-	return BPF_DROP;
+	return export_flow_keys(keys, BPF_DROP);
 }

 static __always_inline int parse_ipv6_proto(struct __sk_buff *skb, __u8 nexthdr)
@@ -225,7 +244,7 @@ static __always_inline int parse_ipv6_proto(struct __sk_buff *skb, __u8 nexthdr)
 		return parse_ip_proto(skb, nexthdr);
 	}

-	return BPF_DROP;
+	return export_flow_keys(keys, BPF_DROP);
 }

 PROG(IP)(struct __sk_buff *skb)
@@ -238,11 +257,11 @@ PROG(IP)(struct __sk_buff *skb)

 	iph = bpf_flow_dissect_get_header(skb, sizeof(*iph), &_iph);
 	if (!iph)
-		return BPF_DROP;
+		return export_flow_keys(keys, BPF_DROP);

 	/* IP header cannot be smaller than 20 bytes */
 	if (iph->ihl < 5)
-		return BPF_DROP;
+		return export_flow_keys(keys, BPF_DROP);

 	keys->addr_proto = ETH_P_IP;
 	keys->ipv4_src = iph->saddr;
@@ -250,7 +269,7 @@ PROG(IP)(struct __sk_buff *skb)

 	keys->thoff += iph->ihl << 2;
 	if (data + keys->thoff > data_end)
-		return BPF_DROP;
+		return export_flow_keys(keys, BPF_DROP);

 	if (iph->frag_off & bpf_htons(IP_MF | IP_OFFSET)) {
 		keys->is_frag = true;
@@ -264,7 +283,7 @@ PROG(IP)(struct __sk_buff *skb)
 	}

 	if (done)
-		return BPF_OK;
+		return export_flow_keys(keys, BPF_OK);

 	return parse_ip_proto(skb, iph->protocol);
 }
@@ -276,7 +295,7 @@ PROG(IPV6)(struct __sk_buff *skb)

 	ip6h = bpf_flow_dissect_get_header(skb, sizeof(*ip6h), &_ip6h);
 	if (!ip6h)
-		return BPF_DROP;
+		return export_flow_keys(keys, BPF_DROP);

 	keys->addr_proto = ETH_P_IPV6;
 	memcpy(&keys->ipv6_src, &ip6h->saddr, 2*sizeof(ip6h->saddr));
@@ -288,11 +307,12 @@ PROG(IPV6)(struct __sk_buff *skb)

 PROG(IPV6OP)(struct __sk_buff *skb)
 {
+	struct bpf_flow_keys *keys = skb->flow_keys;
 	struct ipv6_opt_hdr *ip6h, _ip6h;

 	ip6h = bpf_flow_dissect_get_header(skb, sizeof(*ip6h), &_ip6h);
 	if (!ip6h)
-		return BPF_DROP;
+		return export_flow_keys(keys, BPF_DROP);

 	/* hlen is in 8-octets and does not include the first 8 bytes
 	 * of the header
@@ -309,7 +329,7 @@ PROG(IPV6FR)(struct __sk_buff *skb)

 	fragh = bpf_flow_dissect_get_header(skb, sizeof(*fragh), &_fragh);
 	if (!fragh)
-		return BPF_DROP;
+		return export_flow_keys(keys, BPF_DROP);

 	keys->thoff += sizeof(*fragh);
 	keys->is_frag = true;
@@ -321,13 +341,14 @@ PROG(IPV6FR)(struct __sk_buff *skb)

 PROG(MPLS)(struct __sk_buff *skb)
 {
+	struct bpf_flow_keys *keys = skb->flow_keys;
 	struct mpls_label *mpls, _mpls;

 	mpls = bpf_flow_dissect_get_header(skb, sizeof(*mpls), &_mpls);
 	if (!mpls)
-		return BPF_DROP;
+		return export_flow_keys(keys, BPF_DROP);

-	return BPF_OK;
+	return export_flow_keys(keys, BPF_OK);
 }

 PROG(VLAN)(struct __sk_buff *skb)
@@ -339,10 +360,10 @@ PROG(VLAN)(struct __sk_buff *skb)
 	if (keys->n_proto == bpf_htons(ETH_P_8021AD)) {
 		vlan = bpf_flow_dissect_get_header(skb, sizeof(*vlan), &_vlan);
 		if (!vlan)
-			return BPF_DROP;
+			return export_flow_keys(keys, BPF_DROP);

 		if (vlan->h_vlan_encapsulated_proto != bpf_htons(ETH_P_8021Q))
-			return BPF_DROP;
+			return export_flow_keys(keys, BPF_DROP);

 		keys->nhoff += sizeof(*vlan);
 		keys->thoff += sizeof(*vlan);
@@ -350,14 +371,14 @@ PROG(VLAN)(struct __sk_buff *skb)

 	vlan = bpf_flow_dissect_get_header(skb, sizeof(*vlan), &_vlan);
 	if (!vlan)
-		return BPF_DROP;
+		return export_flow_keys(keys, BPF_DROP);

 	keys->nhoff += sizeof(*vlan);
 	keys->thoff += sizeof(*vlan);
 	/* Only allow 8021AD + 8021Q double tagging and no triple tagging.*/
 	if (vlan->h_vlan_encapsulated_proto == bpf_htons(ETH_P_8021AD) ||
 	    vlan->h_vlan_encapsulated_proto == bpf_htons(ETH_P_8021Q))
-		return BPF_DROP;
+		return export_flow_keys(keys, BPF_DROP);

 	keys->n_proto = vlan->h_vlan_encapsulated_proto;
 	return parse_eth_proto(skb, vlan->h_vlan_encapsulated_proto);
--- a/tools/testing/selftests/bpf/progs/test_sock_fields_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_sock_fields_kern.c
@@ -55,6 +55,31 @@ struct bpf_map_def SEC("maps") linum_map = {
 	.max_entries = __NR_BPF_LINUM_ARRAY_IDX,
 };

+struct bpf_spinlock_cnt {
+	struct bpf_spin_lock lock;
+	__u32 cnt;
+};
+
+struct bpf_map_def SEC("maps") sk_pkt_out_cnt = {
+	.type = BPF_MAP_TYPE_SK_STORAGE,
+	.key_size = sizeof(int),
+	.value_size = sizeof(struct bpf_spinlock_cnt),
+	.max_entries = 0,
+	.map_flags = BPF_F_NO_PREALLOC,
+};
+
+BPF_ANNOTATE_KV_PAIR(sk_pkt_out_cnt, int, struct bpf_spinlock_cnt);
+
+struct bpf_map_def SEC("maps") sk_pkt_out_cnt10 = {
+	.type = BPF_MAP_TYPE_SK_STORAGE,
+	.key_size = sizeof(int),
+	.value_size = sizeof(struct bpf_spinlock_cnt),
+	.max_entries = 0,
+	.map_flags = BPF_F_NO_PREALLOC,
+};
+
+BPF_ANNOTATE_KV_PAIR(sk_pkt_out_cnt10, int, struct bpf_spinlock_cnt);
+
 static bool is_loopback6(__u32 *a6)
 {
 	return !a6[0] && !a6[1] && !a6[2] && a6[3] == bpf_htonl(1);
@@ -120,7 +145,9 @@ static void tpcpy(struct bpf_tcp_sock *dst,
 SEC("cgroup_skb/egress")
 int egress_read_sock_fields(struct __sk_buff *skb)
 {
+	struct bpf_spinlock_cnt cli_cnt_init = { .lock = 0, .cnt = 0xeB9F };
 	__u32 srv_idx = ADDR_SRV_IDX, cli_idx = ADDR_CLI_IDX, result_idx;
+	struct bpf_spinlock_cnt *pkt_out_cnt, *pkt_out_cnt10;
 	struct sockaddr_in6 *srv_sa6, *cli_sa6;
 	struct bpf_tcp_sock *tp, *tp_ret;
 	struct bpf_sock *sk, *sk_ret;
@@ -161,6 +188,32 @@ int egress_read_sock_fields(struct __sk_buff *skb)
 	skcpy(sk_ret, sk);
 	tpcpy(tp_ret, tp);

+	if (result_idx == EGRESS_SRV_IDX) {
+		/* The userspace has created it for srv sk */
+		pkt_out_cnt = bpf_sk_storage_get(&sk_pkt_out_cnt, sk, 0, 0);
+		pkt_out_cnt10 = bpf_sk_storage_get(&sk_pkt_out_cnt10, sk,
+						   0, 0);
+	} else {
+		pkt_out_cnt = bpf_sk_storage_get(&sk_pkt_out_cnt, sk,
+						 &cli_cnt_init,
+						 BPF_SK_STORAGE_GET_F_CREATE);
+		pkt_out_cnt10 = bpf_sk_storage_get(&sk_pkt_out_cnt10,
+						   sk, &cli_cnt_init,
+						   BPF_SK_STORAGE_GET_F_CREATE);
+	}
+
+	if (!pkt_out_cnt || !pkt_out_cnt10)
+		RETURN;
+
+	/* Even both cnt and cnt10 have lock defined in their BTF,
+	 * intentionally one cnt takes lock while one does not
+	 * as a test for the spinlock support in BPF_MAP_TYPE_SK_STORAGE.
+	 */
+	pkt_out_cnt->cnt += 1;
+	bpf_spin_lock(&pkt_out_cnt10->lock);
+	pkt_out_cnt10->cnt += 10;
+	bpf_spin_unlock(&pkt_out_cnt10->lock);
+
 	RETURN;
 }

--- a/tools/testing/selftests/bpf/progs/test_tc_tunnel.c
+++ b/tools/testing/selftests/bpf/progs/test_tc_tunnel.c
@@ -77,17 +77,52 @@ static __always_inline int encap_ipv4(struct __sk_buff *skb, __u8 encap_proto,
 	struct v4hdr h_outer;
 	struct tcphdr tcph;
 	int olen, l2_len;
+	int tcp_off;
 	__u64 flags;

-	if (bpf_skb_load_bytes(skb, ETH_HLEN, &iph_inner,
-			       sizeof(iph_inner)) < 0)
-		return TC_ACT_OK;
+	/* Most tests encapsulate a packet into a tunnel with the same
+	 * network protocol, and derive the outer header fields from
+	 * the inner header.
+	 *
+	 * The 6in4 case tests different inner and outer protocols. As
+	 * the inner is ipv6, but the outer expects an ipv4 header as
+	 * input, manually build a struct iphdr based on the ipv6hdr.
+	 */
+	if (encap_proto == IPPROTO_IPV6) {
+		const __u32 saddr = (192 << 24) | (168 << 16) | (1 << 8) | 1;
+		const __u32 daddr = (192 << 24) | (168 << 16) | (1 << 8) | 2;
+		struct ipv6hdr iph6_inner;
+
+		/* Read the IPv6 header */
+		if (bpf_skb_load_bytes(skb, ETH_HLEN, &iph6_inner,
+				       sizeof(iph6_inner)) < 0)
+			return TC_ACT_OK;
+
+		/* Derive the IPv4 header fields from the IPv6 header */
+		memset(&iph_inner, 0, sizeof(iph_inner));
+		iph_inner.version = 4;
+		iph_inner.ihl = 5;
+		iph_inner.tot_len = bpf_htons(sizeof(iph6_inner) +
+				    bpf_ntohs(iph6_inner.payload_len));
+		iph_inner.ttl = iph6_inner.hop_limit - 1;
+		iph_inner.protocol = iph6_inner.nexthdr;
+		iph_inner.saddr = __bpf_constant_htonl(saddr);
+		iph_inner.daddr = __bpf_constant_htonl(daddr);
+
+		tcp_off = sizeof(iph6_inner);
+	} else {
+		if (bpf_skb_load_bytes(skb, ETH_HLEN, &iph_inner,
+				       sizeof(iph_inner)) < 0)
+			return TC_ACT_OK;
+
+		tcp_off = sizeof(iph_inner);
+	}

 	/* filter only packets we want */
 	if (iph_inner.ihl != 5 || iph_inner.protocol != IPPROTO_TCP)
 		return TC_ACT_OK;

-	if (bpf_skb_load_bytes(skb, ETH_HLEN + sizeof(iph_inner),
+	if (bpf_skb_load_bytes(skb, ETH_HLEN + tcp_off,
 			       &tcph, sizeof(tcph)) < 0)
 		return TC_ACT_OK;

@@ -129,6 +164,7 @@ static __always_inline int encap_ipv4(struct __sk_buff *skb, __u8 encap_proto,
 						  l2_len);
 		break;
 	case IPPROTO_IPIP:
+	case IPPROTO_IPV6:
 		break;
 	default:
 		return TC_ACT_OK;
@@ -164,6 +200,17 @@ static __always_inline int encap_ipv4(struct __sk_buff *skb, __u8 encap_proto,
 				BPF_F_INVALIDATE_HASH) < 0)
 		return TC_ACT_SHOT;

+	/* if changing outer proto type, update eth->h_proto */
+	if (encap_proto == IPPROTO_IPV6) {
+		struct ethhdr eth;
+
+		if (bpf_skb_load_bytes(skb, 0, &eth, sizeof(eth)) < 0)
+			return TC_ACT_SHOT;
+		eth.h_proto = bpf_htons(ETH_P_IP);
+		if (bpf_skb_store_bytes(skb, 0, &eth, sizeof(eth), 0) < 0)
+			return TC_ACT_SHOT;
+	}
+
 	return TC_ACT_OK;
 }

@@ -325,6 +372,15 @@ int __encap_udp_eth(struct __sk_buff *skb)
 		return TC_ACT_OK;
 }

+SEC("encap_sit_none")
+int __encap_sit_none(struct __sk_buff *skb)
+{
+	if (skb->protocol == __bpf_constant_htons(ETH_P_IPV6))
+		return encap_ipv4(skb, IPPROTO_IPV6, ETH_P_IP);
+	else
+		return TC_ACT_OK;
+}
+
 SEC("encap_ip6tnl_none")
 int __encap_ip6tnl_none(struct __sk_buff *skb)
 {
--- a/tools/testing/selftests/bpf/test_btf.c
+++ b/tools/testing/selftests/bpf/test_btf.c
@@ -24,6 +24,7 @@

 #include "bpf_rlimit.h"
 #include "bpf_util.h"
+#include "test_btf.h"

 #define MAX_INSNS	512
 #define MAX_SUBPROGS	16
@@ -58,68 +59,6 @@ static int __base_pr(enum libbpf_print_level level __attribute__((unused)),
 	return vfprintf(stderr, format, args);
 }

-#define BTF_INFO_ENC(kind, kind_flag, vlen)			\
-	((!!(kind_flag) << 31) | ((kind) << 24) | ((vlen) & BTF_MAX_VLEN))
-
-#define BTF_TYPE_ENC(name, info, size_or_type)	\
-	(name), (info), (size_or_type)
-
-#define BTF_INT_ENC(encoding, bits_offset, nr_bits)	\
-	((encoding) << 24 | (bits_offset) << 16 | (nr_bits))
-#define BTF_TYPE_INT_ENC(name, encoding, bits_offset, bits, sz)	\
-	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_INT, 0, 0), sz),	\
-	BTF_INT_ENC(encoding, bits_offset, bits)
-
-#define BTF_FWD_ENC(name, kind_flag) \
-	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FWD, kind_flag, 0), 0)
-
-#define BTF_ARRAY_ENC(type, index_type, nr_elems)	\
-	(type), (index_type), (nr_elems)
-#define BTF_TYPE_ARRAY_ENC(type, index_type, nr_elems) \
-	BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ARRAY, 0, 0), 0), \
-	BTF_ARRAY_ENC(type, index_type, nr_elems)
-
-#define BTF_STRUCT_ENC(name, nr_elems, sz)	\
-	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, nr_elems), sz)
-
-#define BTF_UNION_ENC(name, nr_elems, sz)	\
-	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_UNION, 0, nr_elems), sz)
-
-#define BTF_VAR_ENC(name, type, linkage)	\
-	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_VAR, 0, 0), type), (linkage)
-#define BTF_VAR_SECINFO_ENC(type, offset, size)	\
-	(type), (offset), (size)
-
-#define BTF_MEMBER_ENC(name, type, bits_offset)	\
-	(name), (type), (bits_offset)
-#define BTF_ENUM_ENC(name, val) (name), (val)
-#define BTF_MEMBER_OFFSET(bitfield_size, bits_offset) \
-	((bitfield_size) << 24 | (bits_offset))
-
-#define BTF_TYPEDEF_ENC(name, type) \
-	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_TYPEDEF, 0, 0), type)
-
-#define BTF_PTR_ENC(type) \
-	BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), type)
-
-#define BTF_CONST_ENC(type) \
-	BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), type)
-
-#define BTF_VOLATILE_ENC(type) \
-	BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_VOLATILE, 0, 0), type)
-
-#define BTF_RESTRICT_ENC(type) \
-	BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_RESTRICT, 0, 0), type)
-
-#define BTF_FUNC_PROTO_ENC(ret_type, nargs) \
-	BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_FUNC_PROTO, 0, nargs), ret_type)
-
-#define BTF_FUNC_PROTO_ARG_ENC(name, type) \
-	(name), (type)
-
-#define BTF_FUNC_ENC(name, func_proto) \
-	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FUNC, 0, 0), func_proto)
-
 #define BTF_END_RAW 0xdeadbeef
 #define NAME_TBD 0xdeadb33f

--- a/tools/testing/selftests/bpf/test_btf.h
+++ b/tools/testing/selftests/bpf/test_btf.h
@@ -0,0 +1,69 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2019 Facebook */
+
+#ifndef _TEST_BTF_H
+#define _TEST_BTF_H
+
+#define BTF_INFO_ENC(kind, kind_flag, vlen)			\
+	((!!(kind_flag) << 31) | ((kind) << 24) | ((vlen) & BTF_MAX_VLEN))
+
+#define BTF_TYPE_ENC(name, info, size_or_type)	\
+	(name), (info), (size_or_type)
+
+#define BTF_INT_ENC(encoding, bits_offset, nr_bits)	\
+	((encoding) << 24 | (bits_offset) << 16 | (nr_bits))
+#define BTF_TYPE_INT_ENC(name, encoding, bits_offset, bits, sz)	\
+	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_INT, 0, 0), sz),	\
+	BTF_INT_ENC(encoding, bits_offset, bits)
+
+#define BTF_FWD_ENC(name, kind_flag) \
+	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FWD, kind_flag, 0), 0)
+
+#define BTF_ARRAY_ENC(type, index_type, nr_elems)	\
+	(type), (index_type), (nr_elems)
+#define BTF_TYPE_ARRAY_ENC(type, index_type, nr_elems) \
+	BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ARRAY, 0, 0), 0), \
+	BTF_ARRAY_ENC(type, index_type, nr_elems)
+
+#define BTF_STRUCT_ENC(name, nr_elems, sz)	\
+	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, nr_elems), sz)
+
+#define BTF_UNION_ENC(name, nr_elems, sz)	\
+	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_UNION, 0, nr_elems), sz)
+
+#define BTF_VAR_ENC(name, type, linkage)	\
+	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_VAR, 0, 0), type), (linkage)
+#define BTF_VAR_SECINFO_ENC(type, offset, size)	\
+	(type), (offset), (size)
+
+#define BTF_MEMBER_ENC(name, type, bits_offset)	\
+	(name), (type), (bits_offset)
+#define BTF_ENUM_ENC(name, val) (name), (val)
+#define BTF_MEMBER_OFFSET(bitfield_size, bits_offset) \
+	((bitfield_size) << 24 | (bits_offset))
+
+#define BTF_TYPEDEF_ENC(name, type) \
+	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_TYPEDEF, 0, 0), type)
+
+#define BTF_PTR_ENC(type) \
+	BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), type)
+
+#define BTF_CONST_ENC(type) \
+	BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), type)
+
+#define BTF_VOLATILE_ENC(type) \
+	BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_VOLATILE, 0, 0), type)
+
+#define BTF_RESTRICT_ENC(type) \
+	BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_RESTRICT, 0, 0), type)
+
+#define BTF_FUNC_PROTO_ENC(ret_type, nargs) \
+	BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_FUNC_PROTO, 0, nargs), ret_type)
+
+#define BTF_FUNC_PROTO_ARG_ENC(name, type) \
+	(name), (type)
+
+#define BTF_FUNC_ENC(name, func_proto) \
+	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FUNC, 0, 0), func_proto)
+
+#endif /* _TEST_BTF_H */
--- a/tools/testing/selftests/bpf/test_maps.c
+++ b/tools/testing/selftests/bpf/test_maps.c
@@ -27,6 +27,7 @@

 #include "bpf_util.h"
 #include "bpf_rlimit.h"
+#include "test_maps.h"

 #ifndef ENOTSUPP
 #define ENOTSUPP 524
@@ -36,15 +37,6 @@ static int skips;

 static int map_flags;

-#define CHECK(condition, tag, format...) ({				\
-	int __ret = !!(condition);					\
-	if (__ret) {							\
-		printf("%s(%d):FAIL:%s ", __func__, __LINE__, tag);	\
-		printf(format);						\
-		exit(-1);						\
-	}								\
-})
-
 static void test_hashmap(unsigned int task, void *data)
 {
 	long long key, next_key, first_key, value;
@@ -1703,6 +1695,10 @@ static void run_all_tests(void)
 	test_map_in_map();
 }

+#define DECLARE
+#include <map_tests/tests.h>
+#undef DECLARE
+
 int main(void)
 {
 	srand(time(NULL));
@@ -1713,6 +1709,10 @@ int main(void)
 	map_flags = BPF_F_NO_PREALLOC;
 	run_all_tests();

+#define CALL
+#include <map_tests/tests.h>
+#undef CALL
+
 	printf("test_maps: OK, %d SKIPPED\n", skips);
 	return 0;
 }
--- a/tools/testing/selftests/bpf/test_maps.h
+++ b/tools/testing/selftests/bpf/test_maps.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _TEST_MAPS_H
+#define _TEST_MAPS_H
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define CHECK(condition, tag, format...) ({				\
+	int __ret = !!(condition);					\
+	if (__ret) {							\
+		printf("%s(%d):FAIL:%s ", __func__, __LINE__, tag);	\
+		printf(format);						\
+		exit(-1);						\
+	}								\
+})
+
+#endif
--- a/tools/testing/selftests/bpf/test_sock_fields.c
+++ b/tools/testing/selftests/bpf/test_sock_fields.c
@@ -35,6 +35,11 @@ enum bpf_linum_array_idx {
 	__NR_BPF_LINUM_ARRAY_IDX,
 };

+struct bpf_spinlock_cnt {
+	struct bpf_spin_lock lock;
+	__u32 cnt;
+};
+
 #define CHECK(condition, tag, format...) ({				\
 	int __ret = !!(condition);					\
 	if (__ret) {							\
@@ -50,6 +55,8 @@ enum bpf_linum_array_idx {
 #define DATA_LEN sizeof(DATA)

 static struct sockaddr_in6 srv_sa6, cli_sa6;
+static int sk_pkt_out_cnt10_fd;
+static int sk_pkt_out_cnt_fd;
 static int linum_map_fd;
 static int addr_map_fd;
 static int tp_map_fd;
@@ -220,28 +227,90 @@ static void check_result(void)
 	      "Unexpected listen_tp", "Check listen_tp output. ingress_linum:%u",
 	      ingress_linum);

-	CHECK(srv_tp.data_segs_out != 1 ||
+	CHECK(srv_tp.data_segs_out != 2 ||
 	      srv_tp.data_segs_in ||
 	      srv_tp.snd_cwnd != 10 ||
 	      srv_tp.total_retrans ||
-	      srv_tp.bytes_acked != DATA_LEN,
+	      srv_tp.bytes_acked != 2 * DATA_LEN,
 	      "Unexpected srv_tp", "Check srv_tp output. egress_linum:%u",
 	      egress_linum);

 	CHECK(cli_tp.data_segs_out ||
-	      cli_tp.data_segs_in != 1 ||
+	      cli_tp.data_segs_in != 2 ||
 	      cli_tp.snd_cwnd != 10 ||
 	      cli_tp.total_retrans ||
-	      cli_tp.bytes_received != DATA_LEN,
+	      cli_tp.bytes_received != 2 * DATA_LEN,
 	      "Unexpected cli_tp", "Check cli_tp output. egress_linum:%u",
 	      egress_linum);
 }

+static void check_sk_pkt_out_cnt(int accept_fd, int cli_fd)
+{
+	struct bpf_spinlock_cnt pkt_out_cnt = {}, pkt_out_cnt10 = {};
+	int err;
+
+	pkt_out_cnt.cnt = ~0;
+	pkt_out_cnt10.cnt = ~0;
+	err = bpf_map_lookup_elem(sk_pkt_out_cnt_fd, &accept_fd, &pkt_out_cnt);
+	if (!err)
+		err = bpf_map_lookup_elem(sk_pkt_out_cnt10_fd, &accept_fd,
+					  &pkt_out_cnt10);
+
+	/* The bpf prog only counts for fullsock and
+	 * passive conneciton did not become fullsock until 3WHS
+	 * had been finished.
+	 * The bpf prog only counted two data packet out but we
+	 * specially init accept_fd's pkt_out_cnt by 2 in
+	 * init_sk_storage().  Hence, 4 here.
+	 */
+	CHECK(err || pkt_out_cnt.cnt != 4 || pkt_out_cnt10.cnt != 40,
+	      "bpf_map_lookup_elem(sk_pkt_out_cnt, &accept_fd)",
+	      "err:%d errno:%d pkt_out_cnt:%u pkt_out_cnt10:%u",
+	      err, errno, pkt_out_cnt.cnt, pkt_out_cnt10.cnt);
+
+	pkt_out_cnt.cnt = ~0;
+	pkt_out_cnt10.cnt = ~0;
+	err = bpf_map_lookup_elem(sk_pkt_out_cnt_fd, &cli_fd, &pkt_out_cnt);
+	if (!err)
+		err = bpf_map_lookup_elem(sk_pkt_out_cnt10_fd, &cli_fd,
+					  &pkt_out_cnt10);
+	/* Active connection is fullsock from the beginning.
+	 * 1 SYN and 1 ACK during 3WHS
+	 * 2 Acks on data packet.
+	 *
+	 * The bpf_prog initialized it to 0xeB9F.
+	 */
+	CHECK(err || pkt_out_cnt.cnt != 0xeB9F + 4 ||
+	      pkt_out_cnt10.cnt != 0xeB9F + 40,
+	      "bpf_map_lookup_elem(sk_pkt_out_cnt, &cli_fd)",
+	      "err:%d errno:%d pkt_out_cnt:%u pkt_out_cnt10:%u",
+	      err, errno, pkt_out_cnt.cnt, pkt_out_cnt10.cnt);
+}
+
+static void init_sk_storage(int sk_fd, __u32 pkt_out_cnt)
+{
+	struct bpf_spinlock_cnt scnt = {};
+	int err;
+
+	scnt.cnt = pkt_out_cnt;
+	err = bpf_map_update_elem(sk_pkt_out_cnt_fd, &sk_fd, &scnt,
+				  BPF_NOEXIST);
+	CHECK(err, "bpf_map_update_elem(sk_pkt_out_cnt_fd)",
+	      "err:%d errno:%d", err, errno);
+
+	scnt.cnt *= 10;
+	err = bpf_map_update_elem(sk_pkt_out_cnt10_fd, &sk_fd, &scnt,
+				  BPF_NOEXIST);
+	CHECK(err, "bpf_map_update_elem(sk_pkt_out_cnt10_fd)",
+	      "err:%d errno:%d", err, errno);
+}
+
 static void test(void)
 {
 	int listen_fd, cli_fd, accept_fd, epfd, err;
 	struct epoll_event ev;
 	socklen_t addrlen;
+	int i;

 	addrlen = sizeof(struct sockaddr_in6);
 	ev.events = EPOLLIN;
@@ -308,24 +377,30 @@ static void test(void)
 	      accept_fd, errno);
 	close(listen_fd);

-	/* Send some data from accept_fd to cli_fd */
-	err = send(accept_fd, DATA, DATA_LEN, 0);
-	CHECK(err != DATA_LEN, "send(accept_fd)", "err:%d errno:%d",
-	      err, errno);
-
-	/* Have some timeout in recv(cli_fd). Just in case. */
 	ev.data.fd = cli_fd;
 	err = epoll_ctl(epfd, EPOLL_CTL_ADD, cli_fd, &ev);
 	CHECK(err, "epoll_ctl(EPOLL_CTL_ADD, cli_fd)", "err:%d errno:%d",
 	      err, errno);

-	err = epoll_wait(epfd, &ev, 1, 1000);
-	CHECK(err != 1 || ev.data.fd != cli_fd,
-	      "epoll_wait(cli_fd)", "err:%d errno:%d ev.data.fd:%d cli_fd:%d",
-	      err, errno, ev.data.fd, cli_fd);
+	init_sk_storage(accept_fd, 2);

-	err = recv(cli_fd, NULL, 0, MSG_TRUNC);
-	CHECK(err, "recv(cli_fd)", "err:%d errno:%d", err, errno);
+	for (i = 0; i < 2; i++) {
+		/* Send some data from accept_fd to cli_fd */
+		err = send(accept_fd, DATA, DATA_LEN, 0);
+		CHECK(err != DATA_LEN, "send(accept_fd)", "err:%d errno:%d",
+		      err, errno);
+
+		/* Have some timeout in recv(cli_fd). Just in case. */
+		err = epoll_wait(epfd, &ev, 1, 1000);
+		CHECK(err != 1 || ev.data.fd != cli_fd,
+		      "epoll_wait(cli_fd)", "err:%d errno:%d ev.data.fd:%d cli_fd:%d",
+		      err, errno, ev.data.fd, cli_fd);
+
+		err = recv(cli_fd, NULL, 0, MSG_TRUNC);
+		CHECK(err, "recv(cli_fd)", "err:%d errno:%d", err, errno);
+	}
+
+	check_sk_pkt_out_cnt(accept_fd, cli_fd);

 	close(epfd);
 	close(accept_fd);
@@ -395,6 +470,14 @@ int main(int argc, char **argv)
 	CHECK(!map, "cannot find linum_map", "(null)");
 	linum_map_fd = bpf_map__fd(map);

+	map = bpf_object__find_map_by_name(obj, "sk_pkt_out_cnt");
+	CHECK(!map, "cannot find sk_pkt_out_cnt", "(null)");
+	sk_pkt_out_cnt_fd = bpf_map__fd(map);
+
+	map = bpf_object__find_map_by_name(obj, "sk_pkt_out_cnt10");
+	CHECK(!map, "cannot find sk_pkt_out_cnt10", "(null)");
+	sk_pkt_out_cnt10_fd = bpf_map__fd(map);
+
 	test();

 	bpf_object__close(obj);
--- a/tools/testing/selftests/bpf/test_tc_tunnel.sh
+++ b/tools/testing/selftests/bpf/test_tc_tunnel.sh
@@ -97,6 +97,9 @@ if [[ "$#" -eq "0" ]]; then
 	echo "ip6ip6"
 	$0 ipv6 ip6tnl none 100

+	echo "sit"
+	$0 ipv6 sit none 100
+
 	for mac in none mpls eth ; do
 		echo "ip gre $mac"
 		$0 ipv4 gre $mac 100
@@ -211,11 +214,20 @@ else
 	targs=""
 fi

+# tunnel address family differs from inner for SIT
+if [[ "${tuntype}" == "sit" ]]; then
+	link_addr1="${ns1_v4}"
+	link_addr2="${ns2_v4}"
+else
+	link_addr1="${addr1}"
+	link_addr2="${addr2}"
+fi
+
 # serverside, insert decap module
 # server is still running
 # client can connect again
 ip netns exec "${ns2}" ip link add name testtun0 type "${ttype}" \
-	${tmode} remote "${addr1}" local "${addr2}" $targs
+	${tmode} remote "${link_addr1}" local "${link_addr2}" $targs

 expect_tun_fail=0

@@ -260,6 +272,12 @@ else
 	server_listen
 fi

+# bpf_skb_net_shrink does not take tunnel flags yet, cannot update L3.
+if [[ "${tuntype}" == "sit" ]]; then
+	echo OK
+	exit 0
+fi
+
 # serverside, use BPF for decap
 ip netns exec "${ns2}" ip link del dev testtun0
 ip netns exec "${ns2}" tc qdisc add dev veth2 clsact
--- a/tools/testing/selftests/bpf/test_verifier.c
+++ b/tools/testing/selftests/bpf/test_verifier.c
@@ -47,12 +47,13 @@
 #include "bpf_rlimit.h"
 #include "bpf_rand.h"
 #include "bpf_util.h"
+#include "test_btf.h"
 #include "../../../include/linux/filter.h"

 #define MAX_INSNS	BPF_MAXINSNS
 #define MAX_TEST_INSNS	1000000
 #define MAX_FIXUPS	8
-#define MAX_NR_MAPS	17
+#define MAX_NR_MAPS	18
 #define MAX_TEST_RUNS	8
 #define POINTER_VALUE	0xcafe4all
 #define TEST_DATA_LEN	64
@@ -85,6 +86,7 @@ struct bpf_test {
 	int fixup_map_array_ro[MAX_FIXUPS];
 	int fixup_map_array_wo[MAX_FIXUPS];
 	int fixup_map_array_small[MAX_FIXUPS];
+	int fixup_sk_storage_map[MAX_FIXUPS];
 	const char *errstr;
 	const char *errstr_unpriv;
 	uint32_t retval, retval_unpriv, insn_processed;
@@ -497,24 +499,6 @@ static int create_cgroup_storage(bool percpu)
 	return fd;
 }

-#define BTF_INFO_ENC(kind, kind_flag, vlen) \
-	((!!(kind_flag) << 31) | ((kind) << 24) | ((vlen) & BTF_MAX_VLEN))
-#define BTF_TYPE_ENC(name, info, size_or_type) \
-	(name), (info), (size_or_type)
-#define BTF_INT_ENC(encoding, bits_offset, nr_bits) \
-	((encoding) << 24 | (bits_offset) << 16 | (nr_bits))
-#define BTF_TYPE_INT_ENC(name, encoding, bits_offset, bits, sz) \
-	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_INT, 0, 0), sz), \
-	BTF_INT_ENC(encoding, bits_offset, bits)
-#define BTF_MEMBER_ENC(name, type, bits_offset) \
-	(name), (type), (bits_offset)
-
-struct btf_raw_data {
-	__u32 raw_types[64];
-	const char *str_sec;
-	__u32 str_sec_size;
-};
-
 /* struct bpf_spin_lock {
 *   int val;
 * };
@@ -589,6 +573,31 @@ static int create_map_spin_lock(void)
 	return fd;
 }

+static int create_sk_storage_map(void)
+{
+	struct bpf_create_map_attr attr = {
+		.name = "test_map",
+		.map_type = BPF_MAP_TYPE_SK_STORAGE,
+		.key_size = 4,
+		.value_size = 8,
+		.max_entries = 0,
+		.map_flags = BPF_F_NO_PREALLOC,
+		.btf_key_type_id = 1,
+		.btf_value_type_id = 3,
+	};
+	int fd, btf_fd;
+
+	btf_fd = load_btf();
+	if (btf_fd < 0)
+		return -1;
+	attr.btf_fd = btf_fd;
+	fd = bpf_create_map_xattr(&attr);
+	close(attr.btf_fd);
+	if (fd < 0)
+		printf("Failed to create sk_storage_map\n");
+	return fd;
+}
+
 static char bpf_vlog[UINT_MAX >> 8];

 static void do_test_fixup(struct bpf_test *test, enum bpf_prog_type prog_type,
@@ -611,6 +620,7 @@ static void do_test_fixup(struct bpf_test *test, enum bpf_prog_type prog_type,
 	int *fixup_map_array_ro = test->fixup_map_array_ro;
 	int *fixup_map_array_wo = test->fixup_map_array_wo;
 	int *fixup_map_array_small = test->fixup_map_array_small;
+	int *fixup_sk_storage_map = test->fixup_sk_storage_map;

 	if (test->fill_helper) {
 		test->fill_insns = calloc(MAX_TEST_INSNS, sizeof(struct bpf_insn));
@@ -765,6 +775,13 @@ static void do_test_fixup(struct bpf_test *test, enum bpf_prog_type prog_type,
 			fixup_map_array_small++;
 		} while (*fixup_map_array_small);
 	}
+	if (*fixup_sk_storage_map) {
+		map_fds[17] = create_sk_storage_map();
+		do {
+			prog[*fixup_sk_storage_map].imm = map_fds[17];
+			fixup_sk_storage_map++;
+		} while (*fixup_sk_storage_map);
+	}
 }

 static int set_admin(bool admin)
--- a/tools/testing/selftests/bpf/verifier/raw_tp_writable.c
+++ b/tools/testing/selftests/bpf/verifier/raw_tp_writable.c
@@ -0,0 +1,34 @@
+{
+	"raw_tracepoint_writable: reject variable offset",
+	.insns = {
+		/* r6 is our tp buffer */
+		BPF_LDX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
+
+		BPF_LD_MAP_FD(BPF_REG_1, 0),
+		/* move the key (== 0) to r10-8 */
+		BPF_MOV32_IMM(BPF_REG_0, 0),
+		BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
+		BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
+		BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_0, 0),
+		/* lookup in the map */
+		BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
+			     BPF_FUNC_map_lookup_elem),
+
+		/* exit clean if null */
+		BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
+		BPF_EXIT_INSN(),
+
+		/* shift the buffer pointer to a variable location */
+		BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, 0),
+		BPF_ALU64_REG(BPF_ADD, BPF_REG_6, BPF_REG_0),
+		/* clobber whatever's there */
+		BPF_MOV64_IMM(BPF_REG_7, 4242),
+		BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_7, 0),
+
+		BPF_MOV64_IMM(BPF_REG_0, 0),
+		BPF_EXIT_INSN(),
+	},
+	.fixup_map_hash_8b = { 1, },
+	.prog_type = BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE,
+	.errstr = "R6 invalid variable buffer offset: off=0, var_off=(0x0; 0xffffffff)",
+},
--- a/tools/testing/selftests/bpf/verifier/sock.c
+++ b/tools/testing/selftests/bpf/verifier/sock.c
@@ -382,3 +382,119 @@
 	.result = REJECT,
 	.errstr = "reference has not been acquired before",
 },
+{
+	"sk_storage_get(map, skb->sk, NULL, 0): value == NULL",
+	.insns = {
+	BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
+	BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
+	BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	BPF_MOV64_IMM(BPF_REG_4, 0),
+	BPF_MOV64_IMM(BPF_REG_3, 0),
+	BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
+	BPF_LD_MAP_FD(BPF_REG_1, 0),
+	BPF_EMIT_CALL(BPF_FUNC_sk_storage_get),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.fixup_sk_storage_map = { 11 },
+	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
+	.result = ACCEPT,
+},
+{
+	"sk_storage_get(map, skb->sk, 1, 1): value == 1",
+	.insns = {
+	BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
+	BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
+	BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	BPF_MOV64_IMM(BPF_REG_4, 1),
+	BPF_MOV64_IMM(BPF_REG_3, 1),
+	BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
+	BPF_LD_MAP_FD(BPF_REG_1, 0),
+	BPF_EMIT_CALL(BPF_FUNC_sk_storage_get),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.fixup_sk_storage_map = { 11 },
+	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
+	.result = REJECT,
+	.errstr = "R3 type=inv expected=fp",
+},
+{
+	"sk_storage_get(map, skb->sk, &stack_value, 1): stack_value",
+	.insns = {
+	BPF_MOV64_IMM(BPF_REG_2, 0),
+	BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_2, -8),
+	BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
+	BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
+	BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	BPF_MOV64_IMM(BPF_REG_4, 1),
+	BPF_MOV64_REG(BPF_REG_3, BPF_REG_10),
+	BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, -8),
+	BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
+	BPF_LD_MAP_FD(BPF_REG_1, 0),
+	BPF_EMIT_CALL(BPF_FUNC_sk_storage_get),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.fixup_sk_storage_map = { 14 },
+	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
+	.result = ACCEPT,
+},
+{
+	"sk_storage_get(map, skb->sk, &stack_value, 1): partially init stack_value",
+	.insns = {
+	BPF_MOV64_IMM(BPF_REG_2, 0),
+	BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_2, -8),
+	BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
+	BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
+	BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	BPF_MOV64_IMM(BPF_REG_4, 1),
+	BPF_MOV64_REG(BPF_REG_3, BPF_REG_10),
+	BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, -8),
+	BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
+	BPF_LD_MAP_FD(BPF_REG_1, 0),
+	BPF_EMIT_CALL(BPF_FUNC_sk_storage_get),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.fixup_sk_storage_map = { 14 },
+	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
+	.result = REJECT,
+	.errstr = "invalid indirect read from stack",
+},
+{
+	"bpf_map_lookup_elem(smap, &key)",
+	.insns = {
+	BPF_ST_MEM(BPF_W, BPF_REG_10, -4, 0),
+	BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
+	BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
+	BPF_LD_MAP_FD(BPF_REG_1, 0),
+	BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.fixup_sk_storage_map = { 3 },
+	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
+	.result = REJECT,
+	.errstr = "cannot pass map_type 24 into func bpf_map_lookup_elem",
+},