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

Daniel Borkmann says:

====================
pull-request: bpf-next 2022-02-09

We've added 126 non-merge commits during the last 16 day(s) which contain
a total of 201 files changed, 4049 insertions(+), 2215 deletions(-).

The main changes are:

1) Add custom BPF allocator for JITs that pack multiple programs into a huge
   page to reduce iTLB pressure, from Song Liu.

2) Add __user tagging support in vmlinux BTF and utilize it from BPF
   verifier when generating loads, from Yonghong Song.

3) Add per-socket fast path check guarding from cgroup/BPF overhead when
   used by only some sockets, from Pavel Begunkov.

4) Continued libbpf deprecation work of APIs/features and removal of their
   usage from samples, selftests, libbpf & bpftool, from Andrii Nakryiko
   and various others.

5) Improve BPF instruction set documentation by adding byte swap
   instructions and cleaning up load/store section, from Christoph Hellwig.

6) Switch BPF preload infra to light skeleton and remove libbpf dependency
   from it, from Alexei Starovoitov.

7) Fix architecture-agnostic macros in libbpf for accessing syscall
   arguments from BPF progs for non-x86 architectures,
   from Ilya Leoshkevich.

8) Rework port members in struct bpf_sk_lookup and struct bpf_sock to be
   of 16-bit field with anonymous zero padding, from Jakub Sitnicki.

9) Add new bpf_copy_from_user_task() helper to read memory from a different
   task than current. Add ability to create sleepable BPF iterator progs,
   from Kenny Yu.

10) Implement XSK batching for ice's zero-copy driver used by AF_XDP and
    utilize TX batching API from XSK buffer pool, from Maciej Fijalkowski.

11) Generate temporary netns names for BPF selftests to avoid naming
    collisions, from Hangbin Liu.

12) Implement bpf_core_types_are_compat() with limited recursion for
    in-kernel usage, from Matteo Croce.

13) Simplify pahole version detection and finally enable CONFIG_DEBUG_INFO_DWARF5
    to be selected with CONFIG_DEBUG_INFO_BTF, from Nathan Chancellor.

14) Misc minor fixes to libbpf and selftests from various folks.

* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (126 commits)
  selftests/bpf: Cover 4-byte load from remote_port in bpf_sk_lookup
  bpf: Make remote_port field in struct bpf_sk_lookup 16-bit wide
  libbpf: Fix compilation warning due to mismatched printf format
  selftests/bpf: Test BPF_KPROBE_SYSCALL macro
  libbpf: Add BPF_KPROBE_SYSCALL macro
  libbpf: Fix accessing the first syscall argument on s390
  libbpf: Fix accessing the first syscall argument on arm64
  libbpf: Allow overriding PT_REGS_PARM1{_CORE}_SYSCALL
  selftests/bpf: Skip test_bpf_syscall_macro's syscall_arg1 on arm64 and s390
  libbpf: Fix accessing syscall arguments on riscv
  libbpf: Fix riscv register names
  libbpf: Fix accessing syscall arguments on powerpc
  selftests/bpf: Use PT_REGS_SYSCALL_REGS in bpf_syscall_macro
  libbpf: Add PT_REGS_SYSCALL_REGS macro
  selftests/bpf: Fix an endianness issue in bpf_syscall_macro test
  bpf: Fix bpf_prog_pack build HPAGE_PMD_SIZE
  bpf: Fix leftover header->pages in sparc and powerpc code.
  libbpf: Fix signedness bug in btf_dump_array_data()
  selftests/bpf: Do not export subtest as standalone test
  bpf, x86_64: Fail gracefully on bpf_jit_binary_pack_finalize failures
  ...
====================

Link: https://lore.kernel.org/r/20220209210050.8425-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

13 files changed, 958 insertions, 544 deletions

diff --git a/kernel/bpf/bpf_iter.c b/kernel/bpf/bpf_iter.c
index b7aef5b3416d..110029ede71e 100644
--- a/kernel/bpf/bpf_iter.c
+++ b/kernel/bpf/bpf_iter.c
@@ -5,6 +5,7 @@
 #include <linux/anon_inodes.h>
 #include <linux/filter.h>
 #include <linux/bpf.h>
+#include <linux/rcupdate_trace.h>
 
 struct bpf_iter_target_info {
 	struct list_head list;
@@ -684,11 +685,20 @@ int bpf_iter_run_prog(struct bpf_prog *prog, void *ctx)
 {
 	int ret;
 
-	rcu_read_lock();
-	migrate_disable();
-	ret = bpf_prog_run(prog, ctx);
-	migrate_enable();
-	rcu_read_unlock();
+	if (prog->aux->sleepable) {
+		rcu_read_lock_trace();
+		migrate_disable();
+		might_fault();
+		ret = bpf_prog_run(prog, ctx);
+		migrate_enable();
+		rcu_read_unlock_trace();
+	} else {
+		rcu_read_lock();
+		migrate_disable();
+		ret = bpf_prog_run(prog, ctx);
+		migrate_enable();
+		rcu_read_unlock();
+	}
 
 	/* bpf program can only return 0 or 1:
 	 *  0 : okay
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index a1c44c17ea9c..11740b300de9 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -419,6 +419,9 @@ static struct btf_type btf_void;
 static int btf_resolve(struct btf_verifier_env *env,
 		       const struct btf_type *t, u32 type_id);
 
+static int btf_func_check(struct btf_verifier_env *env,
+			  const struct btf_type *t);
+
 static bool btf_type_is_modifier(const struct btf_type *t)
 {
 	/* Some of them is not strictly a C modifier
@@ -595,6 +598,7 @@ static bool btf_type_needs_resolve(const struct btf_type *t)
 	       btf_type_is_struct(t) ||
 	       btf_type_is_array(t) ||
 	       btf_type_is_var(t) ||
+	       btf_type_is_func(t) ||
 	       btf_type_is_decl_tag(t) ||
 	       btf_type_is_datasec(t);
 }
@@ -3571,9 +3575,24 @@ static s32 btf_func_check_meta(struct btf_verifier_env *env,
 	return 0;
 }
 
+static int btf_func_resolve(struct btf_verifier_env *env,
+			    const struct resolve_vertex *v)
+{
+	const struct btf_type *t = v->t;
+	u32 next_type_id = t->type;
+	int err;
+
+	err = btf_func_check(env, t);
+	if (err)
+		return err;
+
+	env_stack_pop_resolved(env, next_type_id, 0);
+	return 0;
+}
+
 static struct btf_kind_operations func_ops = {
 	.check_meta = btf_func_check_meta,
-	.resolve = btf_df_resolve,
+	.resolve = btf_func_resolve,
 	.check_member = btf_df_check_member,
 	.check_kflag_member = btf_df_check_kflag_member,
 	.log_details = btf_ref_type_log,
@@ -4194,7 +4213,7 @@ static bool btf_resolve_valid(struct btf_verifier_env *env,
 		return !btf_resolved_type_id(btf, type_id) &&
 		       !btf_resolved_type_size(btf, type_id);
 
-	if (btf_type_is_decl_tag(t))
+	if (btf_type_is_decl_tag(t) || btf_type_is_func(t))
 		return btf_resolved_type_id(btf, type_id) &&
 		       !btf_resolved_type_size(btf, type_id);
 
@@ -4284,12 +4303,6 @@ static int btf_check_all_types(struct btf_verifier_env *env)
 			if (err)
 				return err;
 		}
-
-		if (btf_type_is_func(t)) {
-			err = btf_func_check(env, t);
-			if (err)
-				return err;
-		}
 	}
 
 	return 0;
@@ -4886,6 +4899,7 @@ bool btf_ctx_access(int off, int size, enum bpf_access_type type,
 	const char *tname = prog->aux->attach_func_name;
 	struct bpf_verifier_log *log = info->log;
 	const struct btf_param *args;
+	const char *tag_value;
 	u32 nr_args, arg;
 	int i, ret;
 
@@ -5038,6 +5052,13 @@ bool btf_ctx_access(int off, int size, enum bpf_access_type type,
 	info->btf = btf;
 	info->btf_id = t->type;
 	t = btf_type_by_id(btf, t->type);
+
+	if (btf_type_is_type_tag(t)) {
+		tag_value = __btf_name_by_offset(btf, t->name_off);
+		if (strcmp(tag_value, "user") == 0)
+			info->reg_type |= MEM_USER;
+	}
+
 	/* skip modifiers */
 	while (btf_type_is_modifier(t)) {
 		info->btf_id = t->type;
@@ -5064,12 +5085,12 @@ enum bpf_struct_walk_result {
 
 static int btf_struct_walk(struct bpf_verifier_log *log, const struct btf *btf,
 			   const struct btf_type *t, int off, int size,
-			   u32 *next_btf_id)
+			   u32 *next_btf_id, enum bpf_type_flag *flag)
 {
 	u32 i, moff, mtrue_end, msize = 0, total_nelems = 0;
 	const struct btf_type *mtype, *elem_type = NULL;
 	const struct btf_member *member;
-	const char *tname, *mname;
+	const char *tname, *mname, *tag_value;
 	u32 vlen, elem_id, mid;
 
 again:
@@ -5253,7 +5274,8 @@ error:
 		}
 
 		if (btf_type_is_ptr(mtype)) {
-			const struct btf_type *stype;
+			const struct btf_type *stype, *t;
+			enum bpf_type_flag tmp_flag = 0;
 			u32 id;
 
 			if (msize != size || off != moff) {
@@ -5262,9 +5284,19 @@ error:
 					mname, moff, tname, off, size);
 				return -EACCES;
 			}
+
+			/* check __user tag */
+			t = btf_type_by_id(btf, mtype->type);
+			if (btf_type_is_type_tag(t)) {
+				tag_value = __btf_name_by_offset(btf, t->name_off);
+				if (strcmp(tag_value, "user") == 0)
+					tmp_flag = MEM_USER;
+			}
+
 			stype = btf_type_skip_modifiers(btf, mtype->type, &id);
 			if (btf_type_is_struct(stype)) {
 				*next_btf_id = id;
+				*flag = tmp_flag;
 				return WALK_PTR;
 			}
 		}
@@ -5291,13 +5323,14 @@ error:
 int btf_struct_access(struct bpf_verifier_log *log, const struct btf *btf,
 		      const struct btf_type *t, int off, int size,
 		      enum bpf_access_type atype __maybe_unused,
-		      u32 *next_btf_id)
+		      u32 *next_btf_id, enum bpf_type_flag *flag)
 {
+	enum bpf_type_flag tmp_flag = 0;
 	int err;
 	u32 id;
 
 	do {
-		err = btf_struct_walk(log, btf, t, off, size, &id);
+		err = btf_struct_walk(log, btf, t, off, size, &id, &tmp_flag);
 
 		switch (err) {
 		case WALK_PTR:
@@ -5305,6 +5338,7 @@ int btf_struct_access(struct bpf_verifier_log *log, const struct btf *btf,
 			 * we're done.
 			 */
 			*next_btf_id = id;
+			*flag = tmp_flag;
 			return PTR_TO_BTF_ID;
 		case WALK_SCALAR:
 			return SCALAR_VALUE;
@@ -5349,6 +5383,7 @@ bool btf_struct_ids_match(struct bpf_verifier_log *log,
 			  const struct btf *need_btf, u32 need_type_id)
 {
 	const struct btf_type *type;
+	enum bpf_type_flag flag;
 	int err;
 
 	/* Are we already done? */
@@ -5359,7 +5394,7 @@ again:
 	type = btf_type_by_id(btf, id);
 	if (!type)
 		return false;
-	err = btf_struct_walk(log, btf, type, off, 1, &id);
+	err = btf_struct_walk(log, btf, type, off, 1, &id, &flag);
 	if (err != WALK_STRUCT)
 		return false;
 
@@ -6740,8 +6775,19 @@ int register_btf_kfunc_id_set(enum bpf_prog_type prog_type,
 	int ret;
 
 	btf = btf_get_module_btf(kset->owner);
-	if (IS_ERR_OR_NULL(btf))
-		return btf ? PTR_ERR(btf) : -ENOENT;
+	if (!btf) {
+		if (!kset->owner && IS_ENABLED(CONFIG_DEBUG_INFO_BTF)) {
+			pr_err("missing vmlinux BTF, cannot register kfuncs\n");
+			return -ENOENT;
+		}
+		if (kset->owner && IS_ENABLED(CONFIG_DEBUG_INFO_BTF_MODULES)) {
+			pr_err("missing module BTF, cannot register kfuncs\n");
+			return -ENOENT;
+		}
+		return 0;
+	}
+	if (IS_ERR(btf))
+		return PTR_ERR(btf);
 
 	hook = bpf_prog_type_to_kfunc_hook(prog_type);
 	ret = btf_populate_kfunc_set(btf, hook, kset);
@@ -6752,10 +6798,113 @@ int register_btf_kfunc_id_set(enum bpf_prog_type prog_type,
 }
 EXPORT_SYMBOL_GPL(register_btf_kfunc_id_set);
 
+#define MAX_TYPES_ARE_COMPAT_DEPTH 2
+
+static
+int __bpf_core_types_are_compat(const struct btf *local_btf, __u32 local_id,
+				const struct btf *targ_btf, __u32 targ_id,
+				int level)
+{
+	const struct btf_type *local_type, *targ_type;
+	int depth = 32; /* max recursion depth */
+
+	/* caller made sure that names match (ignoring flavor suffix) */
+	local_type = btf_type_by_id(local_btf, local_id);
+	targ_type = btf_type_by_id(targ_btf, targ_id);
+	if (btf_kind(local_type) != btf_kind(targ_type))
+		return 0;
+
+recur:
+	depth--;
+	if (depth < 0)
+		return -EINVAL;
+
+	local_type = btf_type_skip_modifiers(local_btf, local_id, &local_id);
+	targ_type = btf_type_skip_modifiers(targ_btf, targ_id, &targ_id);
+	if (!local_type || !targ_type)
+		return -EINVAL;
+
+	if (btf_kind(local_type) != btf_kind(targ_type))
+		return 0;
+
+	switch (btf_kind(local_type)) {
+	case BTF_KIND_UNKN:
+	case BTF_KIND_STRUCT:
+	case BTF_KIND_UNION:
+	case BTF_KIND_ENUM:
+	case BTF_KIND_FWD:
+		return 1;
+	case BTF_KIND_INT:
+		/* just reject deprecated bitfield-like integers; all other
+		 * integers are by default compatible between each other
+		 */
+		return btf_int_offset(local_type) == 0 && btf_int_offset(targ_type) == 0;
+	case BTF_KIND_PTR:
+		local_id = local_type->type;
+		targ_id = targ_type->type;
+		goto recur;
+	case BTF_KIND_ARRAY:
+		local_id = btf_array(local_type)->type;
+		targ_id = btf_array(targ_type)->type;
+		goto recur;
+	case BTF_KIND_FUNC_PROTO: {
+		struct btf_param *local_p = btf_params(local_type);
+		struct btf_param *targ_p = btf_params(targ_type);
+		__u16 local_vlen = btf_vlen(local_type);
+		__u16 targ_vlen = btf_vlen(targ_type);
+		int i, err;
+
+		if (local_vlen != targ_vlen)
+			return 0;
+
+		for (i = 0; i < local_vlen; i++, local_p++, targ_p++) {
+			if (level <= 0)
+				return -EINVAL;
+
+			btf_type_skip_modifiers(local_btf, local_p->type, &local_id);
+			btf_type_skip_modifiers(targ_btf, targ_p->type, &targ_id);
+			err = __bpf_core_types_are_compat(local_btf, local_id,
+							  targ_btf, targ_id,
+							  level - 1);
+			if (err <= 0)
+				return err;
+		}
+
+		/* tail recurse for return type check */
+		btf_type_skip_modifiers(local_btf, local_type->type, &local_id);
+		btf_type_skip_modifiers(targ_btf, targ_type->type, &targ_id);
+		goto recur;
+	}
+	default:
+		return 0;
+	}
+}
+
+/* Check local and target types for compatibility. This check is used for
+ * type-based CO-RE relocations and follow slightly different rules than
+ * field-based relocations. This function assumes that root types were already
+ * checked for name match. Beyond that initial root-level name check, names
+ * are completely ignored. Compatibility rules are as follows:
+ *   - any two STRUCTs/UNIONs/FWDs/ENUMs/INTs are considered compatible, but
+ *     kind should match for local and target types (i.e., STRUCT is not
+ *     compatible with UNION);
+ *   - for ENUMs, the size is ignored;
+ *   - for INT, size and signedness are ignored;
+ *   - for ARRAY, dimensionality is ignored, element types are checked for
+ *     compatibility recursively;
+ *   - CONST/VOLATILE/RESTRICT modifiers are ignored;
+ *   - TYPEDEFs/PTRs are compatible if types they pointing to are compatible;
+ *   - FUNC_PROTOs are compatible if they have compatible signature: same
+ *     number of input args and compatible return and argument types.
+ * These rules are not set in stone and probably will be adjusted as we get
+ * more experience with using BPF CO-RE relocations.
+ */
 int bpf_core_types_are_compat(const struct btf *local_btf, __u32 local_id,
 			      const struct btf *targ_btf, __u32 targ_id)
 {
-	return -EOPNOTSUPP;
+	return __bpf_core_types_are_compat(local_btf, local_id,
+					   targ_btf, targ_id,
+					   MAX_TYPES_ARE_COMPAT_DEPTH);
 }
 
 static bool bpf_core_is_flavor_sep(const char *s)
diff --git a/kernel/bpf/cgroup.c b/kernel/bpf/cgroup.c
index 279ebbed75a5..098632fdbc45 100644
--- a/kernel/bpf/cgroup.c
+++ b/kernel/bpf/cgroup.c
@@ -1384,20 +1384,6 @@ int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,
 }
 
 #ifdef CONFIG_NET
-static bool __cgroup_bpf_prog_array_is_empty(struct cgroup *cgrp,
-					     enum cgroup_bpf_attach_type attach_type)
-{
-	struct bpf_prog_array *prog_array;
-	bool empty;
-
-	rcu_read_lock();
-	prog_array = rcu_dereference(cgrp->bpf.effective[attach_type]);
-	empty = bpf_prog_array_is_empty(prog_array);
-	rcu_read_unlock();
-
-	return empty;
-}
-
 static int sockopt_alloc_buf(struct bpf_sockopt_kern *ctx, int max_optlen,
 			     struct bpf_sockopt_buf *buf)
 {
@@ -1456,19 +1442,11 @@ int __cgroup_bpf_run_filter_setsockopt(struct sock *sk, int *level,
 	};
 	int ret, max_optlen;
 
-	/* Opportunistic check to see whether we have any BPF program
-	 * attached to the hook so we don't waste time allocating
-	 * memory and locking the socket.
-	 */
-	if (__cgroup_bpf_prog_array_is_empty(cgrp, CGROUP_SETSOCKOPT))
-		return 0;
-
 	/* Allocate a bit more than the initial user buffer for
 	 * BPF program. The canonical use case is overriding
 	 * TCP_CONGESTION(nv) to TCP_CONGESTION(cubic).
 	 */
 	max_optlen = max_t(int, 16, *optlen);
-
 	max_optlen = sockopt_alloc_buf(&ctx, max_optlen, &buf);
 	if (max_optlen < 0)
 		return max_optlen;
@@ -1550,15 +1528,7 @@ int __cgroup_bpf_run_filter_getsockopt(struct sock *sk, int level,
 	};
 	int ret;
 
-	/* Opportunistic check to see whether we have any BPF program
-	 * attached to the hook so we don't waste time allocating
-	 * memory and locking the socket.
-	 */
-	if (__cgroup_bpf_prog_array_is_empty(cgrp, CGROUP_GETSOCKOPT))
-		return retval;
-
 	ctx.optlen = max_optlen;
-
 	max_optlen = sockopt_alloc_buf(&ctx, max_optlen, &buf);
 	if (max_optlen < 0)
 		return max_optlen;
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
index 0a1cfd8544b9..42d96549a804 100644
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c
@@ -537,13 +537,10 @@ long bpf_jit_limit_max __read_mostly;
 static void
 bpf_prog_ksym_set_addr(struct bpf_prog *prog)
 {
-	const struct bpf_binary_header *hdr = bpf_jit_binary_hdr(prog);
-	unsigned long addr = (unsigned long)hdr;
-
 	WARN_ON_ONCE(!bpf_prog_ebpf_jited(prog));
 
 	prog->aux->ksym.start = (unsigned long) prog->bpf_func;
-	prog->aux->ksym.end   = addr + hdr->pages * PAGE_SIZE;
+	prog->aux->ksym.end   = prog->aux->ksym.start + prog->jited_len;
 }
 
 static void
@@ -808,6 +805,137 @@ int bpf_jit_add_poke_descriptor(struct bpf_prog *prog,
 	return slot;
 }
 
+/*
+ * BPF program pack allocator.
+ *
+ * Most BPF programs are pretty small. Allocating a hole page for each
+ * program is sometime a waste. Many small bpf program also adds pressure
+ * to instruction TLB. To solve this issue, we introduce a BPF program pack
+ * allocator. The prog_pack allocator uses HPAGE_PMD_SIZE page (2MB on x86)
+ * to host BPF programs.
+ */
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+#define BPF_PROG_PACK_SIZE	HPAGE_PMD_SIZE
+#else
+#define BPF_PROG_PACK_SIZE	PAGE_SIZE
+#endif
+#define BPF_PROG_CHUNK_SHIFT	6
+#define BPF_PROG_CHUNK_SIZE	(1 << BPF_PROG_CHUNK_SHIFT)
+#define BPF_PROG_CHUNK_MASK	(~(BPF_PROG_CHUNK_SIZE - 1))
+#define BPF_PROG_CHUNK_COUNT	(BPF_PROG_PACK_SIZE / BPF_PROG_CHUNK_SIZE)
+
+struct bpf_prog_pack {
+	struct list_head list;
+	void *ptr;
+	unsigned long bitmap[BITS_TO_LONGS(BPF_PROG_CHUNK_COUNT)];
+};
+
+#define BPF_PROG_MAX_PACK_PROG_SIZE	BPF_PROG_PACK_SIZE
+#define BPF_PROG_SIZE_TO_NBITS(size)	(round_up(size, BPF_PROG_CHUNK_SIZE) / BPF_PROG_CHUNK_SIZE)
+
+static DEFINE_MUTEX(pack_mutex);
+static LIST_HEAD(pack_list);
+
+static struct bpf_prog_pack *alloc_new_pack(void)
+{
+	struct bpf_prog_pack *pack;
+
+	pack = kzalloc(sizeof(*pack), GFP_KERNEL);
+	if (!pack)
+		return NULL;
+	pack->ptr = module_alloc(BPF_PROG_PACK_SIZE);
+	if (!pack->ptr) {
+		kfree(pack);
+		return NULL;
+	}
+	bitmap_zero(pack->bitmap, BPF_PROG_PACK_SIZE / BPF_PROG_CHUNK_SIZE);
+	list_add_tail(&pack->list, &pack_list);
+
+	set_vm_flush_reset_perms(pack->ptr);
+	set_memory_ro((unsigned long)pack->ptr, BPF_PROG_PACK_SIZE / PAGE_SIZE);
+	set_memory_x((unsigned long)pack->ptr, BPF_PROG_PACK_SIZE / PAGE_SIZE);
+	return pack;
+}
+
+static void *bpf_prog_pack_alloc(u32 size)
+{
+	unsigned int nbits = BPF_PROG_SIZE_TO_NBITS(size);
+	struct bpf_prog_pack *pack;
+	unsigned long pos;
+	void *ptr = NULL;
+
+	if (size > BPF_PROG_MAX_PACK_PROG_SIZE) {
+		size = round_up(size, PAGE_SIZE);
+		ptr = module_alloc(size);
+		if (ptr) {
+			set_vm_flush_reset_perms(ptr);
+			set_memory_ro((unsigned long)ptr, size / PAGE_SIZE);
+			set_memory_x((unsigned long)ptr, size / PAGE_SIZE);
+		}
+		return ptr;
+	}
+	mutex_lock(&pack_mutex);
+	list_for_each_entry(pack, &pack_list, list) {
+		pos = bitmap_find_next_zero_area(pack->bitmap, BPF_PROG_CHUNK_COUNT, 0,
+						 nbits, 0);
+		if (pos < BPF_PROG_CHUNK_COUNT)
+			goto found_free_area;
+	}
+
+	pack = alloc_new_pack();
+	if (!pack)
+		goto out;
+
+	pos = 0;
+
+found_free_area:
+	bitmap_set(pack->bitmap, pos, nbits);
+	ptr = (void *)(pack->ptr) + (pos << BPF_PROG_CHUNK_SHIFT);
+
+out:
+	mutex_unlock(&pack_mutex);
+	return ptr;
+}
+
+static void bpf_prog_pack_free(struct bpf_binary_header *hdr)
+{
+	struct bpf_prog_pack *pack = NULL, *tmp;
+	unsigned int nbits;
+	unsigned long pos;
+	void *pack_ptr;
+
+	if (hdr->size > BPF_PROG_MAX_PACK_PROG_SIZE) {
+		module_memfree(hdr);
+		return;
+	}
+
+	pack_ptr = (void *)((unsigned long)hdr & ~(BPF_PROG_PACK_SIZE - 1));
+	mutex_lock(&pack_mutex);
+
+	list_for_each_entry(tmp, &pack_list, list) {
+		if (tmp->ptr == pack_ptr) {
+			pack = tmp;
+			break;
+		}
+	}
+
+	if (WARN_ONCE(!pack, "bpf_prog_pack bug\n"))
+		goto out;
+
+	nbits = BPF_PROG_SIZE_TO_NBITS(hdr->size);
+	pos = ((unsigned long)hdr - (unsigned long)pack_ptr) >> BPF_PROG_CHUNK_SHIFT;
+
+	bitmap_clear(pack->bitmap, pos, nbits);
+	if (bitmap_find_next_zero_area(pack->bitmap, BPF_PROG_CHUNK_COUNT, 0,
+				       BPF_PROG_CHUNK_COUNT, 0) == 0) {
+		list_del(&pack->list);
+		module_memfree(pack->ptr);
+		kfree(pack);
+	}
+out:
+	mutex_unlock(&pack_mutex);
+}
+
 static atomic_long_t bpf_jit_current;
 
 /* Can be overridden by an arch's JIT compiler if it has a custom,
@@ -833,12 +961,11 @@ static int __init bpf_jit_charge_init(void)
 }
 pure_initcall(bpf_jit_charge_init);
 
-int bpf_jit_charge_modmem(u32 pages)
+int bpf_jit_charge_modmem(u32 size)
 {
-	if (atomic_long_add_return(pages, &bpf_jit_current) >
-	    (bpf_jit_limit >> PAGE_SHIFT)) {
+	if (atomic_long_add_return(size, &bpf_jit_current) > bpf_jit_limit) {
 		if (!bpf_capable()) {
-			atomic_long_sub(pages, &bpf_jit_current);
+			atomic_long_sub(size, &bpf_jit_current);
 			return -EPERM;
 		}
 	}
@@ -846,9 +973,9 @@ int bpf_jit_charge_modmem(u32 pages)
 	return 0;
 }
 
-void bpf_jit_uncharge_modmem(u32 pages)
+void bpf_jit_uncharge_modmem(u32 size)
 {
-	atomic_long_sub(pages, &bpf_jit_current);
+	atomic_long_sub(size, &bpf_jit_current);
 }
 
 void *__weak bpf_jit_alloc_exec(unsigned long size)
@@ -867,7 +994,7 @@ bpf_jit_binary_alloc(unsigned int proglen, u8 **image_ptr,
 		     bpf_jit_fill_hole_t bpf_fill_ill_insns)
 {
 	struct bpf_binary_header *hdr;
-	u32 size, hole, start, pages;
+	u32 size, hole, start;
 
 	WARN_ON_ONCE(!is_power_of_2(alignment) ||
 		     alignment > BPF_IMAGE_ALIGNMENT);
@@ -877,20 +1004,19 @@ bpf_jit_binary_alloc(unsigned int proglen, u8 **image_ptr,
 	 * random section of illegal instructions.
 	 */
 	size = round_up(proglen + sizeof(*hdr) + 128, PAGE_SIZE);
-	pages = size / PAGE_SIZE;
 
-	if (bpf_jit_charge_modmem(pages))
+	if (bpf_jit_charge_modmem(size))
 		return NULL;
 	hdr = bpf_jit_alloc_exec(size);
 	if (!hdr) {
-		bpf_jit_uncharge_modmem(pages);
+		bpf_jit_uncharge_modmem(size);
 		return NULL;
 	}
 
 	/* Fill space with illegal/arch-dep instructions. */
 	bpf_fill_ill_insns(hdr, size);
 
-	hdr->pages = pages;
+	hdr->size = size;
 	hole = min_t(unsigned int, size - (proglen + sizeof(*hdr)),
 		     PAGE_SIZE - sizeof(*hdr));
 	start = (get_random_int() % hole) & ~(alignment - 1);
@@ -903,10 +1029,113 @@ bpf_jit_binary_alloc(unsigned int proglen, u8 **image_ptr,
 
 void bpf_jit_binary_free(struct bpf_binary_header *hdr)
 {
-	u32 pages = hdr->pages;
+	u32 size = hdr->size;
 
 	bpf_jit_free_exec(hdr);
-	bpf_jit_uncharge_modmem(pages);
+	bpf_jit_uncharge_modmem(size);
+}
+
+/* Allocate jit binary from bpf_prog_pack allocator.
+ * Since the allocated memory is RO+X, the JIT engine cannot write directly
+ * to the memory. To solve this problem, a RW buffer is also allocated at
+ * as the same time. The JIT engine should calculate offsets based on the
+ * RO memory address, but write JITed program to the RW buffer. Once the
+ * JIT engine finishes, it calls bpf_jit_binary_pack_finalize, which copies
+ * the JITed program to the RO memory.
+ */
+struct bpf_binary_header *
+bpf_jit_binary_pack_alloc(unsigned int proglen, u8 **image_ptr,
+			  unsigned int alignment,
+			  struct bpf_binary_header **rw_header,
+			  u8 **rw_image,
+			  bpf_jit_fill_hole_t bpf_fill_ill_insns)
+{
+	struct bpf_binary_header *ro_header;
+	u32 size, hole, start;
+
+	WARN_ON_ONCE(!is_power_of_2(alignment) ||
+		     alignment > BPF_IMAGE_ALIGNMENT);
+
+	/* add 16 bytes for a random section of illegal instructions */
+	size = round_up(proglen + sizeof(*ro_header) + 16, BPF_PROG_CHUNK_SIZE);
+
+	if (bpf_jit_charge_modmem(size))
+		return NULL;
+	ro_header = bpf_prog_pack_alloc(size);
+	if (!ro_header) {
+		bpf_jit_uncharge_modmem(size);
+		return NULL;
+	}
+
+	*rw_header = kvmalloc(size, GFP_KERNEL);
+	if (!*rw_header) {
+		bpf_prog_pack_free(ro_header);
+		bpf_jit_uncharge_modmem(size);
+		return NULL;
+	}
+
+	/* Fill space with illegal/arch-dep instructions. */
+	bpf_fill_ill_insns(*rw_header, size);
+	(*rw_header)->size = size;
+
+	hole = min_t(unsigned int, size - (proglen + sizeof(*ro_header)),
+		     BPF_PROG_CHUNK_SIZE - sizeof(*ro_header));
+	start = (get_random_int() % hole) & ~(alignment - 1);
+
+	*image_ptr = &ro_header->image[start];
+	*rw_image = &(*rw_header)->image[start];
+
+	return ro_header;
+}
+
+/* Copy JITed text from rw_header to its final location, the ro_header. */
+int bpf_jit_binary_pack_finalize(struct bpf_prog *prog,
+				 struct bpf_binary_header *ro_header,
+				 struct bpf_binary_header *rw_header)
+{
+	void *ptr;
+
+	ptr = bpf_arch_text_copy(ro_header, rw_header, rw_header->size);
+
+	kvfree(rw_header);
+
+	if (IS_ERR(ptr)) {
+		bpf_prog_pack_free(ro_header);
+		return PTR_ERR(ptr);
+	}
+	prog->aux->use_bpf_prog_pack = true;
+	return 0;
+}
+
+/* bpf_jit_binary_pack_free is called in two different scenarios:
+ *   1) when the program is freed after;
+ *   2) when the JIT engine fails (before bpf_jit_binary_pack_finalize).
+ * For case 2), we need to free both the RO memory and the RW buffer.
+ * Also, ro_header->size in 2) is not properly set yet, so rw_header->size
+ * is used for uncharge.
+ */
+void bpf_jit_binary_pack_free(struct bpf_binary_header *ro_header,
+			      struct bpf_binary_header *rw_header)
+{
+	u32 size = rw_header ? rw_header->size : ro_header->size;
+
+	bpf_prog_pack_free(ro_header);
+	kvfree(rw_header);
+	bpf_jit_uncharge_modmem(size);
+}
+
+static inline struct bpf_binary_header *
+bpf_jit_binary_hdr(const struct bpf_prog *fp)
+{
+	unsigned long real_start = (unsigned long)fp->bpf_func;
+	unsigned long addr;
+
+	if (fp->aux->use_bpf_prog_pack)
+		addr = real_start & BPF_PROG_CHUNK_MASK;
+	else
+		addr = real_start & PAGE_MASK;
+
+	return (void *)addr;
 }
 
 /* This symbol is only overridden by archs that have different
@@ -918,7 +1147,10 @@ void __weak bpf_jit_free(struct bpf_prog *fp)
 	if (fp->jited) {
 		struct bpf_binary_header *hdr = bpf_jit_binary_hdr(fp);
 
-		bpf_jit_binary_free(hdr);
+		if (fp->aux->use_bpf_prog_pack)
+			bpf_jit_binary_pack_free(hdr, NULL /* rw_buffer */);
+		else
+			bpf_jit_binary_free(hdr);
 
 		WARN_ON_ONCE(!bpf_prog_kallsyms_verify_off(fp));
 	}
@@ -1968,18 +2200,10 @@ static struct bpf_prog_dummy {
 	},
 };
 
-/* to avoid allocating empty bpf_prog_array for cgroups that
- * don't have bpf program attached use one global 'empty_prog_array'
- * It will not be modified the caller of bpf_prog_array_alloc()
- * (since caller requested prog_cnt == 0)
- * that pointer should be 'freed' by bpf_prog_array_free()
- */
-static struct {
-	struct bpf_prog_array hdr;
-	struct bpf_prog *null_prog;
-} empty_prog_array = {
+struct bpf_empty_prog_array bpf_empty_prog_array = {
 	.null_prog = NULL,
 };
+EXPORT_SYMBOL(bpf_empty_prog_array);
 
 struct bpf_prog_array *bpf_prog_array_alloc(u32 prog_cnt, gfp_t flags)
 {
@@ -1989,12 +2213,12 @@ struct bpf_prog_array *bpf_prog_array_alloc(u32 prog_cnt, gfp_t flags)
 			       (prog_cnt + 1),
 			       flags);
 
-	return &empty_prog_array.hdr;
+	return &bpf_empty_prog_array.hdr;
 }
 
 void bpf_prog_array_free(struct bpf_prog_array *progs)
 {
-	if (!progs || progs == &empty_prog_array.hdr)
+	if (!progs || progs == &bpf_empty_prog_array.hdr)
 		return;
 	kfree_rcu(progs, rcu);
 }
@@ -2453,6 +2677,11 @@ int __weak bpf_arch_text_poke(void *ip, enum bpf_text_poke_type t,
 	return -ENOTSUPP;
 }
 
+void * __weak bpf_arch_text_copy(void *dst, void *src, size_t len)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
 DEFINE_STATIC_KEY_FALSE(bpf_stats_enabled_key);
 EXPORT_SYMBOL(bpf_stats_enabled_key);
 
diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c
index 01cfdf40c838..4e5969fde0b3 100644
--- a/kernel/bpf/helpers.c
+++ b/kernel/bpf/helpers.c
@@ -16,6 +16,7 @@
 #include <linux/pid_namespace.h>
 #include <linux/proc_ns.h>
 #include <linux/security.h>
+#include <linux/btf_ids.h>
 
 #include "../../lib/kstrtox.h"
 
@@ -671,6 +672,39 @@ const struct bpf_func_proto bpf_copy_from_user_proto = {
 	.arg3_type	= ARG_ANYTHING,
 };
 
+BPF_CALL_5(bpf_copy_from_user_task, void *, dst, u32, size,
+	   const void __user *, user_ptr, struct task_struct *, tsk, u64, flags)
+{
+	int ret;
+
+	/* flags is not used yet */
+	if (unlikely(flags))
+		return -EINVAL;
+
+	if (unlikely(!size))
+		return 0;
+
+	ret = access_process_vm(tsk, (unsigned long)user_ptr, dst, size, 0);
+	if (ret == size)
+		return 0;
+
+	memset(dst, 0, size);
+	/* Return -EFAULT for partial read */
+	return ret < 0 ? ret : -EFAULT;
+}
+
+const struct bpf_func_proto bpf_copy_from_user_task_proto = {
+	.func		= bpf_copy_from_user_task,
+	.gpl_only	= true,
+	.ret_type	= RET_INTEGER,
+	.arg1_type	= ARG_PTR_TO_UNINIT_MEM,
+	.arg2_type	= ARG_CONST_SIZE_OR_ZERO,
+	.arg3_type	= ARG_ANYTHING,
+	.arg4_type	= ARG_PTR_TO_BTF_ID,
+	.arg4_btf_id	= &btf_tracing_ids[BTF_TRACING_TYPE_TASK],
+	.arg5_type	= ARG_ANYTHING
+};
+
 BPF_CALL_2(bpf_per_cpu_ptr, const void *, ptr, u32, cpu)
 {
 	if (cpu >= nr_cpu_ids)
diff --git a/kernel/bpf/preload/Makefile b/kernel/bpf/preload/Makefile
index 1400ac58178e..baf47d9c7557 100644
--- a/kernel/bpf/preload/Makefile
+++ b/kernel/bpf/preload/Makefile
@@ -1,40 +1,16 @@
 # SPDX-License-Identifier: GPL-2.0
 
 LIBBPF_SRCS = $(srctree)/tools/lib/bpf/
-LIBBPF_OUT = $(abspath $(obj))/libbpf
-LIBBPF_A = $(LIBBPF_OUT)/libbpf.a
-LIBBPF_DESTDIR = $(LIBBPF_OUT)
-LIBBPF_INCLUDE = $(LIBBPF_DESTDIR)/include
-
-# Although not in use by libbpf's Makefile, set $(O) so that the "dummy" test
-# in tools/scripts/Makefile.include always succeeds when building the kernel
-# with $(O) pointing to a relative path, as in "make O=build bindeb-pkg".
-$(LIBBPF_A): | $(LIBBPF_OUT)
-	$(Q)$(MAKE) -C $(LIBBPF_SRCS) O=$(LIBBPF_OUT)/ OUTPUT=$(LIBBPF_OUT)/   \
-		DESTDIR=$(LIBBPF_DESTDIR) prefix=			       \
-		$(LIBBPF_OUT)/libbpf.a install_headers
-
-libbpf_hdrs: $(LIBBPF_A)
-
-.PHONY: libbpf_hdrs
-
-$(LIBBPF_OUT):
-	$(call msg,MKDIR,$@)
-	$(Q)mkdir -p $@
+LIBBPF_INCLUDE = $(LIBBPF_SRCS)/..
 
 userccflags += -I $(srctree)/tools/include/ -I $(srctree)/tools/include/uapi \
 	-I $(LIBBPF_INCLUDE) -Wno-unused-result
 
 userprogs := bpf_preload_umd
 
-clean-files := libbpf/
-
-$(obj)/iterators/iterators.o: | libbpf_hdrs
-
 bpf_preload_umd-objs := iterators/iterators.o
-bpf_preload_umd-userldlibs := $(LIBBPF_A) -lelf -lz
 
-$(obj)/bpf_preload_umd: $(LIBBPF_A)
+$(obj)/bpf_preload_umd:
 
 $(obj)/bpf_preload_umd_blob.o: $(obj)/bpf_preload_umd
 
diff --git a/kernel/bpf/preload/iterators/Makefile b/kernel/bpf/preload/iterators/Makefile
index b8bd60511227..bfe24f8c5a20 100644
--- a/kernel/bpf/preload/iterators/Makefile
+++ b/kernel/bpf/preload/iterators/Makefile
@@ -35,15 +35,15 @@ endif
 
 .PHONY: all clean
 
-all: iterators.skel.h
+all: iterators.lskel.h
 
 clean:
 	$(call msg,CLEAN)
 	$(Q)rm -rf $(OUTPUT) iterators
 
-iterators.skel.h: $(OUTPUT)/iterators.bpf.o | $(BPFTOOL)
+iterators.lskel.h: $(OUTPUT)/iterators.bpf.o | $(BPFTOOL)
 	$(call msg,GEN-SKEL,$@)
-	$(Q)$(BPFTOOL) gen skeleton $< > $@
+	$(Q)$(BPFTOOL) gen skeleton -L $< > $@
 
 
 $(OUTPUT)/iterators.bpf.o: iterators.bpf.c $(BPFOBJ) | $(OUTPUT)
diff --git a/kernel/bpf/preload/iterators/iterators.c b/kernel/bpf/preload/iterators/iterators.c
index 5d872a705470..4dafe0f4f2b2 100644
--- a/kernel/bpf/preload/iterators/iterators.c
+++ b/kernel/bpf/preload/iterators/iterators.c
@@ -10,20 +10,36 @@
 #include <bpf/libbpf.h>
 #include <bpf/bpf.h>
 #include <sys/mount.h>
-#include "iterators.skel.h"
+#include "iterators.lskel.h"
 #include "bpf_preload_common.h"
 
 int to_kernel = -1;
 int from_kernel = 0;
 
-static int send_link_to_kernel(struct bpf_link *link, const char *link_name)
+static int __bpf_obj_get_info_by_fd(int bpf_fd, void *info, __u32 *info_len)
+{
+	union bpf_attr attr;
+	int err;
+
+	memset(&attr, 0, sizeof(attr));
+	attr.info.bpf_fd = bpf_fd;
+	attr.info.info_len = *info_len;
+	attr.info.info = (long) info;
+
+	err = skel_sys_bpf(BPF_OBJ_GET_INFO_BY_FD, &attr, sizeof(attr));
+	if (!err)
+		*info_len = attr.info.info_len;
+	return err;
+}
+
+static int send_link_to_kernel(int link_fd, const char *link_name)
 {
 	struct bpf_preload_info obj = {};
 	struct bpf_link_info info = {};
 	__u32 info_len = sizeof(info);
 	int err;
 
-	err = bpf_obj_get_info_by_fd(bpf_link__fd(link), &info, &info_len);
+	err = __bpf_obj_get_info_by_fd(link_fd, &info, &info_len);
 	if (err)
 		return err;
 	obj.link_id = info.id;
@@ -37,7 +53,6 @@ static int send_link_to_kernel(struct bpf_link *link, const char *link_name)
 
 int main(int argc, char **argv)
 {
-	struct rlimit rlim = { RLIM_INFINITY, RLIM_INFINITY };
 	struct iterators_bpf *skel;
 	int err, magic;
 	int debug_fd;
@@ -55,7 +70,6 @@ int main(int argc, char **argv)
 		printf("bad start magic %d\n", magic);
 		return 1;
 	}
-	setrlimit(RLIMIT_MEMLOCK, &rlim);
 	/* libbpf opens BPF object and loads it into the kernel */
 	skel = iterators_bpf__open_and_load();
 	if (!skel) {
@@ -72,10 +86,10 @@ int main(int argc, char **argv)
 		goto cleanup;
 
 	/* send two bpf_link IDs with names to the kernel */
-	err = send_link_to_kernel(skel->links.dump_bpf_map, "maps.debug");
+	err = send_link_to_kernel(skel->links.dump_bpf_map_fd, "maps.debug");
 	if (err)
 		goto cleanup;
-	err = send_link_to_kernel(skel->links.dump_bpf_prog, "progs.debug");
+	err = send_link_to_kernel(skel->links.dump_bpf_prog_fd, "progs.debug");
 	if (err)
 		goto cleanup;
 
diff --git a/kernel/bpf/preload/iterators/iterators.lskel.h b/kernel/bpf/preload/iterators/iterators.lskel.h
new file mode 100644
index 000000000000..d90562d672d2
--- /dev/null
+++ b/kernel/bpf/preload/iterators/iterators.lskel.h
@@ -0,0 +1,428 @@
+/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
+/* THIS FILE IS AUTOGENERATED! */
+#ifndef __ITERATORS_BPF_SKEL_H__
+#define __ITERATORS_BPF_SKEL_H__
+
+#include <stdlib.h>
+#include <bpf/bpf.h>
+#include <bpf/skel_internal.h>
+
+struct iterators_bpf {
+	struct bpf_loader_ctx ctx;
+	struct {
+		struct bpf_map_desc rodata;
+	} maps;
+	struct {
+		struct bpf_prog_desc dump_bpf_map;
+		struct bpf_prog_desc dump_bpf_prog;
+	} progs;
+	struct {
+		int dump_bpf_map_fd;
+		int dump_bpf_prog_fd;
+	} links;
+	struct iterators_bpf__rodata {
+	} *rodata;
+};
+
+static inline int
+iterators_bpf__dump_bpf_map__attach(struct iterators_bpf *skel)
+{
+	int prog_fd = skel->progs.dump_bpf_map.prog_fd;
+	int fd = skel_link_create(prog_fd, 0, BPF_TRACE_ITER);
+
+	if (fd > 0)
+		skel->links.dump_bpf_map_fd = fd;
+	return fd;
+}
+
+static inline int
+iterators_bpf__dump_bpf_prog__attach(struct iterators_bpf *skel)
+{
+	int prog_fd = skel->progs.dump_bpf_prog.prog_fd;
+	int fd = skel_link_create(prog_fd, 0, BPF_TRACE_ITER);
+
+	if (fd > 0)
+		skel->links.dump_bpf_prog_fd = fd;
+	return fd;
+}
+
+static inline int
+iterators_bpf__attach(struct iterators_bpf *skel)
+{
+	int ret = 0;
+
+	ret = ret < 0 ? ret : iterators_bpf__dump_bpf_map__attach(skel);
+	ret = ret < 0 ? ret : iterators_bpf__dump_bpf_prog__attach(skel);
+	return ret < 0 ? ret : 0;
+}
+
+static inline void
+iterators_bpf__detach(struct iterators_bpf *skel)
+{
+	skel_closenz(skel->links.dump_bpf_map_fd);
+	skel_closenz(skel->links.dump_bpf_prog_fd);
+}
+static void
+iterators_bpf__destroy(struct iterators_bpf *skel)
+{
+	if (!skel)
+		return;
+	iterators_bpf__detach(skel);
+	skel_closenz(skel->progs.dump_bpf_map.prog_fd);
+	skel_closenz(skel->progs.dump_bpf_prog.prog_fd);
+	munmap(skel->rodata, 4096);
+	skel_closenz(skel->maps.rodata.map_fd);
+	free(skel);
+}
+static inline struct iterators_bpf *
+iterators_bpf__open(void)
+{
+	struct iterators_bpf *skel;
+
+	skel = calloc(sizeof(*skel), 1);
+	if (!skel)
+		goto cleanup;
+	skel->ctx.sz = (void *)&skel->links - (void *)skel;
+	skel->rodata =
+		mmap(NULL, 4096, PROT_READ | PROT_WRITE,
+		     MAP_SHARED | MAP_ANONYMOUS, -1, 0);
+	if (skel->rodata == (void *) -1)
+		goto cleanup;
+	memcpy(skel->rodata, (void *)"\
+\x20\x20\x69\x64\x20\x6e\x61\x6d\x65\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\
+\x20\x20\x20\x6d\x61\x78\x5f\x65\x6e\x74\x72\x69\x65\x73\x0a\0\x25\x34\x75\x20\
+\x25\x2d\x31\x36\x73\x25\x36\x64\x0a\0\x20\x20\x69\x64\x20\x6e\x61\x6d\x65\x20\
+\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x61\x74\x74\x61\x63\x68\x65\
+\x64\x0a\0\x25\x34\x75\x20\x25\x2d\x31\x36\x73\x20\x25\x73\x20\x25\x73\x0a\0", 98);
+	skel->maps.rodata.initial_value = (__u64)(long)skel->rodata;
+	return skel;
+cleanup:
+	iterators_bpf__destroy(skel);
+	return NULL;
+}
+
+static inline int
+iterators_bpf__load(struct iterators_bpf *skel)
+{
+	struct bpf_load_and_run_opts opts = {};
+	int err;
+
+	opts.ctx = (struct bpf_loader_ctx *)skel;
+	opts.data_sz = 6056;
+	opts.data = (void *)"\
+\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
+\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
+\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
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+\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
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+\0\0\0\0";
+	opts.insns_sz = 2184;
+	opts.insns = (void *)"\
+\xbf\x16\0\0\0\0\0\0\xbf\xa1\0\0\0\0\0\0\x07\x01\0\0\x78\xff\xff\xff\xb7\x02\0\
+\0\x88\0\0\0\xb7\x03\0\0\0\0\0\0\x85\0\0\0\x71\0\0\0\x05\0\x14\0\0\0\0\0\x61\
+\xa1\x78\xff\0\0\0\0\xd5\x01\x01\0\0\0\0\0\x85\0\0\0\xa8\0\0\0\x61\xa1\x7c\xff\
+\0\0\0\0\xd5\x01\x01\0\0\0\0\0\x85\0\0\0\xa8\0\0\0\x61\xa1\x80\xff\0\0\0\0\xd5\
+\x01\x01\0\0\0\0\0\x85\0\0\0\xa8\0\0\0\x61\xa1\x84\xff\0\0\0\0\xd5\x01\x01\0\0\
+\0\0\0\x85\0\0\0\xa8\0\0\0\x18\x60\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x61\x01\0\0\0\0\
+\0\0\xd5\x01\x02\0\0\0\0\0\xbf\x19\0\0\0\0\0\0\x85\0\0\0\xa8\0\0\0\xbf\x70\0\0\
+\0\0\0\0\x95\0\0\0\0\0\0\0\x61\x60\x08\0\0\0\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\
+\x48\x0e\0\0\x63\x01\0\0\0\0\0\0\x61\x60\x0c\0\0\0\0\0\x18\x61\0\0\0\0\0\0\0\0\
+\0\0\x44\x0e\0\0\x63\x01\0\0\0\0\0\0\x79\x60\x10\0\0\0\0\0\x18\x61\0\0\0\0\0\0\
+\0\0\0\0\x38\x0e\0\0\x7b\x01\0\0\0\0\0\0\x18\x60\0\0\0\0\0\0\0\0\0\0\0\x05\0\0\
+\x18\x61\0\0\0\0\0\0\0\0\0\0\x30\x0e\0\0\x7b\x01\0\0\0\0\0\0\xb7\x01\0\0\x12\0\
+\0\0\x18\x62\0\0\0\0\0\0\0\0\0\0\x30\x0e\0\0\xb7\x03\0\0\x1c\0\0\0\x85\0\0\0\
+\xa6\0\0\0\xbf\x07\0\0\0\0\0\0\xc5\x07\xd4\xff\0\0\0\0\x63\x7a\x78\xff\0\0\0\0\
+\x61\xa0\x78\xff\0\0\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\x80\x0e\0\0\x63\x01\0\0\0\
+\0\0\0\x61\x60\x20\0\0\0\0\0\x15\0\x03\0\0\0\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\
+\x5c\x0e\0\0\x63\x01\0\0\0\0\0\0\xb7\x01\0\0\0\0\0\0\x18\x62\0\0\0\0\0\0\0\0\0\
+\0\x50\x0e\0\0\xb7\x03\0\0\x48\0\0\0\x85\0\0\0\xa6\0\0\0\xbf\x07\0\0\0\0\0\0\
+\xc5\x07\xc3\xff\0\0\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x63\x71\0\0\0\0\0\
+\0\x79\x63\x18\0\0\0\0\0\x15\x03\x04\0\0\0\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\x98\
+\x0e\0\0\xb7\x02\0\0\x62\0\0\0\x85\0\0\0\x94\0\0\0\x18\x62\0\0\0\0\0\0\0\0\0\0\
+\0\0\0\0\x61\x20\0\0\0\0\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\x08\x0f\0\0\x63\x01\0\
+\0\0\0\0\0\x18\x60\0\0\0\0\0\0\0\0\0\0\0\x0f\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\
+\x10\x0f\0\0\x7b\x01\0\0\0\0\0\0\x18\x60\0\0\0\0\0\0\0\0\0\0\x98\x0e\0\0\x18\
+\x61\0\0\0\0\0\0\0\0\0\0\x18\x0f\0\0\x7b\x01\0\0\0\0\0\0\xb7\x01\0\0\x02\0\0\0\
+\x18\x62\0\0\0\0\0\0\0\0\0\0\x08\x0f\0\0\xb7\x03\0\0\x20\0\0\0\x85\0\0\0\xa6\0\
+\0\0\xbf\x07\0\0\0\0\0\0\xc5\x07\xa3\xff\0\0\0\0\x18\x62\0\0\0\0\0\0\0\0\0\0\0\
+\0\0\0\x61\x20\0\0\0\0\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\x28\x0f\0\0\x63\x01\0\0\
+\0\0\0\0\xb7\x01\0\0\x16\0\0\0\x18\x62\0\0\0\0\0\0\0\0\0\0\x28\x0f\0\0\xb7\x03\
+\0\0\x04\0\0\0\x85\0\0\0\xa6\0\0\0\xbf\x07\0\0\0\0\0\0\xc5\x07\x96\xff\0\0\0\0\
+\x18\x60\0\0\0\0\0\0\0\0\0\0\x30\x0f\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\x78\x11\0\
+\0\x7b\x01\0\0\0\0\0\0\x18\x60\0\0\0\0\0\0\0\0\0\0\x38\x0f\0\0\x18\x61\0\0\0\0\
+\0\0\0\0\0\0\x70\x11\0\0\x7b\x01\0\0\0\0\0\0\x18\x60\0\0\0\0\0\0\0\0\0\0\x40\
+\x10\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\xb8\x11\0\0\x7b\x01\0\0\0\0\0\0\x18\x60\0\
+\0\0\0\0\0\0\0\0\0\x48\x10\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\xc8\x11\0\0\x7b\x01\
+\0\0\0\0\0\0\x18\x60\0\0\0\0\0\0\0\0\0\0\xe8\x10\0\0\x18\x61\0\0\0\0\0\0\0\0\0\
+\0\xe8\x11\0\0\x7b\x01\0\0\0\0\0\0\x18\x60\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x18\x61\
+\0\0\0\0\0\0\0\0\0\0\xe0\x11\0\0\x7b\x01\0\0\0\0\0\0\x61\x60\x08\0\0\0\0\0\x18\
+\x61\0\0\0\0\0\0\0\0\0\0\x80\x11\0\0\x63\x01\0\0\0\0\0\0\x61\x60\x0c\0\0\0\0\0\
+\x18\x61\0\0\0\0\0\0\0\0\0\0\x84\x11\0\0\x63\x01\0\0\0\0\0\0\x79\x60\x10\0\0\0\
+\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\x88\x11\0\0\x7b\x01\0\0\0\0\0\0\x61\xa0\x78\
+\xff\0\0\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\xb0\x11\0\0\x63\x01\0\0\0\0\0\0\x18\
+\x61\0\0\0\0\0\0\0\0\0\0\xf8\x11\0\0\xb7\x02\0\0\x11\0\0\0\xb7\x03\0\0\x0c\0\0\
+\0\xb7\x04\0\0\0\0\0\0\x85\0\0\0\xa7\0\0\0\xbf\x07\0\0\0\0\0\0\xc5\x07\x60\xff\
+\0\0\0\0\x18\x60\0\0\0\0\0\0\0\0\0\0\x68\x11\0\0\x63\x70\x6c\0\0\0\0\0\x77\x07\
+\0\0\x20\0\0\0\x63\x70\x70\0\0\0\0\0\xb7\x01\0\0\x05\0\0\0\x18\x62\0\0\0\0\0\0\
+\0\0\0\0\x68\x11\0\0\xb7\x03\0\0\x8c\0\0\0\x85\0\0\0\xa6\0\0\0\xbf\x07\0\0\0\0\
+\0\0\x18\x60\0\0\0\0\0\0\0\0\0\0\xd8\x11\0\0\x61\x01\0\0\0\0\0\0\xd5\x01\x02\0\
+\0\0\0\0\xbf\x19\0\0\0\0\0\0\x85\0\0\0\xa8\0\0\0\xc5\x07\x4e\xff\0\0\0\0\x63\
+\x7a\x80\xff\0\0\0\0\x18\x60\0\0\0\0\0\0\0\0\0\0\x10\x12\0\0\x18\x61\0\0\0\0\0\
+\0\0\0\0\0\x10\x17\0\0\x7b\x01\0\0\0\0\0\0\x18\x60\0\0\0\0\0\0\0\0\0\0\x18\x12\
+\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\x08\x17\0\0\x7b\x01\0\0\0\0\0\0\x18\x60\0\0\0\
+\0\0\0\0\0\0\0\x28\x14\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\x50\x17\0\0\x7b\x01\0\0\
+\0\0\0\0\x18\x60\0\0\0\0\0\0\0\0\0\0\x30\x14\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\
+\x60\x17\0\0\x7b\x01\0\0\0\0\0\0\x18\x60\0\0\0\0\0\0\0\0\0\0\xd0\x15\0\0\x18\
+\x61\0\0\0\0\0\0\0\0\0\0\x80\x17\0\0\x7b\x01\0\0\0\0\0\0\x18\x60\0\0\0\0\0\0\0\
+\0\0\0\0\0\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\x78\x17\0\0\x7b\x01\0\0\0\0\0\0\x61\
+\x60\x08\0\0\0\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\x18\x17\0\0\x63\x01\0\0\0\0\0\0\
+\x61\x60\x0c\0\0\0\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\x1c\x17\0\0\x63\x01\0\0\0\0\
+\0\0\x79\x60\x10\0\0\0\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\x20\x17\0\0\x7b\x01\0\0\
+\0\0\0\0\x61\xa0\x78\xff\0\0\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\x48\x17\0\0\x63\
+\x01\0\0\0\0\0\0\x18\x61\0\0\0\0\0\0\0\0\0\0\x90\x17\0\0\xb7\x02\0\0\x12\0\0\0\
+\xb7\x03\0\0\x0c\0\0\0\xb7\x04\0\0\0\0\0\0\x85\0\0\0\xa7\0\0\0\xbf\x07\0\0\0\0\
+\0\0\xc5\x07\x17\xff\0\0\0\0\x18\x60\0\0\0\0\0\0\0\0\0\0\0\x17\0\0\x63\x70\x6c\
+\0\0\0\0\0\x77\x07\0\0\x20\0\0\0\x63\x70\x70\0\0\0\0\0\xb7\x01\0\0\x05\0\0\0\
+\x18\x62\0\0\0\0\0\0\0\0\0\0\0\x17\0\0\xb7\x03\0\0\x8c\0\0\0\x85\0\0\0\xa6\0\0\
+\0\xbf\x07\0\0\0\0\0\0\x18\x60\0\0\0\0\0\0\0\0\0\0\x70\x17\0\0\x61\x01\0\0\0\0\
+\0\0\xd5\x01\x02\0\0\0\0\0\xbf\x19\0\0\0\0\0\0\x85\0\0\0\xa8\0\0\0\xc5\x07\x05\
+\xff\0\0\0\0\x63\x7a\x84\xff\0\0\0\0\x61\xa1\x78\xff\0\0\0\0\xd5\x01\x02\0\0\0\
+\0\0\xbf\x19\0\0\0\0\0\0\x85\0\0\0\xa8\0\0\0\x61\xa0\x80\xff\0\0\0\0\x63\x06\
+\x28\0\0\0\0\0\x61\xa0\x84\xff\0\0\0\0\x63\x06\x2c\0\0\0\0\0\x18\x61\0\0\0\0\0\
+\0\0\0\0\0\0\0\0\0\x61\x10\0\0\0\0\0\0\x63\x06\x18\0\0\0\0\0\xb7\0\0\0\0\0\0\0\
+\x95\0\0\0\0\0\0\0";
+	err = bpf_load_and_run(&opts);
+	if (err < 0)
+		return err;
+	skel->rodata =
+		mmap(skel->rodata, 4096, PROT_READ, MAP_SHARED | MAP_FIXED,
+			skel->maps.rodata.map_fd, 0);
+	return 0;
+}
+
+static inline struct iterators_bpf *
+iterators_bpf__open_and_load(void)
+{
+	struct iterators_bpf *skel;
+
+	skel = iterators_bpf__open();
+	if (!skel)
+		return NULL;
+	if (iterators_bpf__load(skel)) {
+		iterators_bpf__destroy(skel);
+		return NULL;
+	}
+	return skel;
+}
+
+#endif /* __ITERATORS_BPF_SKEL_H__ */
diff --git a/kernel/bpf/preload/iterators/iterators.skel.h b/kernel/bpf/preload/iterators/iterators.skel.h
deleted file mode 100644
index cf9a6a94b3a4..000000000000
--- a/kernel/bpf/preload/iterators/iterators.skel.h
+++ /dev/null
@@ -1,412 +0,0 @@
-/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
-
-/* THIS FILE IS AUTOGENERATED! */
-#ifndef __ITERATORS_BPF_SKEL_H__
-#define __ITERATORS_BPF_SKEL_H__
-
-#include <stdlib.h>
-#include <bpf/libbpf.h>
-
-struct iterators_bpf {
-	struct bpf_object_skeleton *skeleton;
-	struct bpf_object *obj;
-	struct {
-		struct bpf_map *rodata;
-	} maps;
-	struct {
-		struct bpf_program *dump_bpf_map;
-		struct bpf_program *dump_bpf_prog;
-	} progs;
-	struct {
-		struct bpf_link *dump_bpf_map;
-		struct bpf_link *dump_bpf_prog;
-	} links;
-	struct iterators_bpf__rodata {
-		char dump_bpf_map____fmt[35];
-		char dump_bpf_map____fmt_1[14];
-		char dump_bpf_prog____fmt[32];
-		char dump_bpf_prog____fmt_2[17];
-	} *rodata;
-};
-
-static void
-iterators_bpf__destroy(struct iterators_bpf *obj)
-{
-	if (!obj)
-		return;
-	if (obj->skeleton)
-		bpf_object__destroy_skeleton(obj->skeleton);
-	free(obj);
-}
-
-static inline int
-iterators_bpf__create_skeleton(struct iterators_bpf *obj);
-
-static inline struct iterators_bpf *
-iterators_bpf__open_opts(const struct bpf_object_open_opts *opts)
-{
-	struct iterators_bpf *obj;
-
-	obj = (struct iterators_bpf *)calloc(1, sizeof(*obj));
-	if (!obj)
-		return NULL;
-	if (iterators_bpf__create_skeleton(obj))
-		goto err;
-	if (bpf_object__open_skeleton(obj->skeleton, opts))
-		goto err;
-
-	return obj;
-err:
-	iterators_bpf__destroy(obj);
-	return NULL;
-}
-
-static inline struct iterators_bpf *
-iterators_bpf__open(void)
-{
-	return iterators_bpf__open_opts(NULL);
-}
-
-static inline int
-iterators_bpf__load(struct iterators_bpf *obj)
-{
-	return bpf_object__load_skeleton(obj->skeleton);
-}
-
-static inline struct iterators_bpf *
-iterators_bpf__open_and_load(void)
-{
-	struct iterators_bpf *obj;
-
-	obj = iterators_bpf__open();
-	if (!obj)
-		return NULL;
-	if (iterators_bpf__load(obj)) {
-		iterators_bpf__destroy(obj);
-		return NULL;
-	}
-	return obj;
-}
-
-static inline int
-iterators_bpf__attach(struct iterators_bpf *obj)
-{
-	return bpf_object__attach_skeleton(obj->skeleton);
-}
-
-static inline void
-iterators_bpf__detach(struct iterators_bpf *obj)
-{
-	return bpf_object__detach_skeleton(obj->skeleton);
-}
-
-static inline int
-iterators_bpf__create_skeleton(struct iterators_bpf *obj)
-{
-	struct bpf_object_skeleton *s;
-
-	s = (struct bpf_object_skeleton *)calloc(1, sizeof(*s));
-	if (!s)
-		return -1;
-	obj->skeleton = s;
-
-	s->sz = sizeof(*s);
-	s->name = "iterators_bpf";
-	s->obj = &obj->obj;
-
-	/* maps */
-	s->map_cnt = 1;
-	s->map_skel_sz = sizeof(*s->maps);
-	s->maps = (struct bpf_map_skeleton *)calloc(s->map_cnt, s->map_skel_sz);
-	if (!s->maps)
-		goto err;
-
-	s->maps[0].name = "iterator.rodata";
-	s->maps[0].map = &obj->maps.rodata;
-	s->maps[0].mmaped = (void **)&obj->rodata;
-
-	/* programs */
-	s->prog_cnt = 2;
-	s->prog_skel_sz = sizeof(*s->progs);
-	s->progs = (struct bpf_prog_skeleton *)calloc(s->prog_cnt, s->prog_skel_sz);
-	if (!s->progs)
-		goto err;
-
-	s->progs[0].name = "dump_bpf_map";
-	s->progs[0].prog = &obj->progs.dump_bpf_map;
-	s->progs[0].link = &obj->links.dump_bpf_map;
-
-	s->progs[1].name = "dump_bpf_prog";
-	s->progs[1].prog = &obj->progs.dump_bpf_prog;
-	s->progs[1].link = &obj->links.dump_bpf_prog;
-
-	s->data_sz = 7176;
-	s->data = (void *)"\
-\x7f\x45\x4c\x46\x02\x01\x01\0\0\0\0\0\0\0\0\0\x01\0\xf7\0\x01\0\0\0\0\0\0\0\0\
-\0\0\0\0\0\0\0\0\0\0\0\x48\x18\0\0\0\0\0\0\0\0\0\0\x40\0\0\0\0\0\x40\0\x0f\0\
-\x0e\0\x79\x12\0\0\0\0\0\0\x79\x26\0\0\0\0\0\0\x79\x17\x08\0\0\0\0\0\x15\x07\
-\x1a\0\0\0\0\0\x79\x21\x10\0\0\0\0\0\x55\x01\x08\0\0\0\0\0\xbf\xa4\0\0\0\0\0\0\
-\x07\x04\0\0\xe8\xff\xff\xff\xbf\x61\0\0\0\0\0\0\x18\x02\0\0\0\0\0\0\0\0\0\0\0\
-\0\0\0\xb7\x03\0\0\x23\0\0\0\xb7\x05\0\0\0\0\0\0\x85\0\0\0\x7e\0\0\0\x61\x71\0\
-\0\0\0\0\0\x7b\x1a\xe8\xff\0\0\0\0\xb7\x01\0\0\x04\0\0\0\xbf\x72\0\0\0\0\0\0\
-\x0f\x12\0\0\0\0\0\0\x7b\x2a\xf0\xff\0\0\0\0\x61\x71\x14\0\0\0\0\0\x7b\x1a\xf8\
-\xff\0\0\0\0\xbf\xa4\0\0\0\0\0\0\x07\x04\0\0\xe8\xff\xff\xff\xbf\x61\0\0\0\0\0\
-\0\x18\x02\0\0\x23\0\0\0\0\0\0\0\0\0\0\0\xb7\x03\0\0\x0e\0\0\0\xb7\x05\0\0\x18\
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-\0\0\0\0\0\0\0\0\0\0\0\0\0\x6d\0\0\0\x01\0\0\0\x06\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
-\0\x40\x01\0\0\0\0\0\0\x08\x02\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x08\0\0\0\0\0\0\0\0\
-\0\0\0\0\0\0\0\xb1\0\0\0\x01\0\0\0\x02\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x48\x03\0\
-\0\0\0\0\0\x62\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
-\x89\0\0\0\x01\0\0\0\x03\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\xaa\x03\0\0\0\0\0\0\x04\
-\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\xbd\0\0\0\x01\
-\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\xae\x03\0\0\0\0\0\0\x3d\x09\0\0\0\0\0\0\
-\0\0\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x0b\0\0\0\x01\0\0\0\0\0\0\0\
-\0\0\0\0\0\0\0\0\0\0\0\0\xeb\x0c\0\0\0\0\0\0\x2c\x04\0\0\0\0\0\0\0\0\0\0\0\0\0\
-\0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\xa9\0\0\0\x02\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
-\0\0\0\0\0\x18\x11\0\0\0\0\0\0\x98\x01\0\0\0\0\0\0\x0e\0\0\0\x0e\0\0\0\x08\0\0\
-\0\0\0\0\0\x18\0\0\0\0\0\0\0\x4a\0\0\0\x09\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
-\0\xb0\x12\0\0\0\0\0\0\x20\0\0\0\0\0\0\0\x08\0\0\0\x02\0\0\0\x08\0\0\0\0\0\0\0\
-\x10\0\0\0\0\0\0\0\x69\0\0\0\x09\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\xd0\x12\
-\0\0\0\0\0\0\x20\0\0\0\0\0\0\0\x08\0\0\0\x03\0\0\0\x08\0\0\0\0\0\0\0\x10\0\0\0\
-\0\0\0\0\xb9\0\0\0\x09\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\xf0\x12\0\0\0\0\0\
-\0\x50\0\0\0\0\0\0\0\x08\0\0\0\x06\0\0\0\x08\0\0\0\0\0\0\0\x10\0\0\0\0\0\0\0\
-\x07\0\0\0\x09\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x40\x13\0\0\0\0\0\0\xe0\
-\x03\0\0\0\0\0\0\x08\0\0\0\x07\0\0\0\x08\0\0\0\0\0\0\0\x10\0\0\0\0\0\0\0\x7b\0\
-\0\0\x03\x4c\xff\x6f\0\0\0\x80\0\0\0\0\0\0\0\0\0\0\0\0\x20\x17\0\0\0\0\0\0\x07\
-\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\xa1\0\0\0\x03\
-\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x27\x17\0\0\0\0\0\0\x1a\x01\0\0\0\0\0\0\
-\0\0\0\0\0\0\0\0\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
-
-	return 0;
-err:
-	bpf_object__destroy_skeleton(s);
-	return -1;
-}
-
-#endif /* __ITERATORS_BPF_SKEL_H__ */
diff --git a/kernel/bpf/trampoline.c b/kernel/bpf/trampoline.c
index 5e7edf913060..7224691df2ec 100644
--- a/kernel/bpf/trampoline.c
+++ b/kernel/bpf/trampoline.c
@@ -213,7 +213,7 @@ static void __bpf_tramp_image_put_deferred(struct work_struct *work)
 	im = container_of(work, struct bpf_tramp_image, work);
 	bpf_image_ksym_del(&im->ksym);
 	bpf_jit_free_exec(im->image);
-	bpf_jit_uncharge_modmem(1);
+	bpf_jit_uncharge_modmem(PAGE_SIZE);
 	percpu_ref_exit(&im->pcref);
 	kfree_rcu(im, rcu);
 }
@@ -310,7 +310,7 @@ static struct bpf_tramp_image *bpf_tramp_image_alloc(u64 key, u32 idx)
 	if (!im)
 		goto out;
 
-	err = bpf_jit_charge_modmem(1);
+	err = bpf_jit_charge_modmem(PAGE_SIZE);
 	if (err)
 		goto out_free_im;
 
@@ -332,7 +332,7 @@ static struct bpf_tramp_image *bpf_tramp_image_alloc(u64 key, u32 idx)
 out_free_image:
 	bpf_jit_free_exec(im->image);
 out_uncharge:
-	bpf_jit_uncharge_modmem(1);
+	bpf_jit_uncharge_modmem(PAGE_SIZE);
 out_free_im:
 	kfree(im);
 out:
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index dcf065ec2774..bbef86cb4e72 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -536,7 +536,7 @@ static bool is_cmpxchg_insn(const struct bpf_insn *insn)
 static const char *reg_type_str(struct bpf_verifier_env *env,
 				enum bpf_reg_type type)
 {
-	char postfix[16] = {0}, prefix[16] = {0};
+	char postfix[16] = {0}, prefix[32] = {0};
 	static const char * const str[] = {
 		[NOT_INIT]		= "?",
 		[SCALAR_VALUE]		= "inv",
@@ -570,9 +570,11 @@ static const char *reg_type_str(struct bpf_verifier_env *env,
 	}
 
 	if (type & MEM_RDONLY)
-		strncpy(prefix, "rdonly_", 16);
+		strncpy(prefix, "rdonly_", 32);
 	if (type & MEM_ALLOC)
-		strncpy(prefix, "alloc_", 16);
+		strncpy(prefix, "alloc_", 32);
+	if (type & MEM_USER)
+		strncpy(prefix, "user_", 32);
 
 	snprintf(env->type_str_buf, TYPE_STR_BUF_LEN, "%s%s%s",
 		 prefix, str[base_type(type)], postfix);
@@ -1547,14 +1549,15 @@ static void mark_reg_not_init(struct bpf_verifier_env *env,
 static void mark_btf_ld_reg(struct bpf_verifier_env *env,
 			    struct bpf_reg_state *regs, u32 regno,
 			    enum bpf_reg_type reg_type,
-			    struct btf *btf, u32 btf_id)
+			    struct btf *btf, u32 btf_id,
+			    enum bpf_type_flag flag)
 {
 	if (reg_type == SCALAR_VALUE) {
 		mark_reg_unknown(env, regs, regno);
 		return;
 	}
 	mark_reg_known_zero(env, regs, regno);
-	regs[regno].type = PTR_TO_BTF_ID;
+	regs[regno].type = PTR_TO_BTF_ID | flag;
 	regs[regno].btf = btf;
 	regs[regno].btf_id = btf_id;
 }
@@ -4152,6 +4155,7 @@ static int check_ptr_to_btf_access(struct bpf_verifier_env *env,
 	struct bpf_reg_state *reg = regs + regno;
 	const struct btf_type *t = btf_type_by_id(reg->btf, reg->btf_id);
 	const char *tname = btf_name_by_offset(reg->btf, t->name_off);
+	enum bpf_type_flag flag = 0;
 	u32 btf_id;
 	int ret;
 
@@ -4171,9 +4175,16 @@ static int check_ptr_to_btf_access(struct bpf_verifier_env *env,
 		return -EACCES;
 	}
 
+	if (reg->type & MEM_USER) {
+		verbose(env,
+			"R%d is ptr_%s access user memory: off=%d\n",
+			regno, tname, off);
+		return -EACCES;
+	}
+
 	if (env->ops->btf_struct_access) {
 		ret = env->ops->btf_struct_access(&env->log, reg->btf, t,
-						  off, size, atype, &btf_id);
+						  off, size, atype, &btf_id, &flag);
 	} else {
 		if (atype != BPF_READ) {
 			verbose(env, "only read is supported\n");
@@ -4181,14 +4192,14 @@ static int check_ptr_to_btf_access(struct bpf_verifier_env *env,
 		}
 
 		ret = btf_struct_access(&env->log, reg->btf, t, off, size,
-					atype, &btf_id);
+					atype, &btf_id, &flag);
 	}
 
 	if (ret < 0)
 		return ret;
 
 	if (atype == BPF_READ && value_regno >= 0)
-		mark_btf_ld_reg(env, regs, value_regno, ret, reg->btf, btf_id);
+		mark_btf_ld_reg(env, regs, value_regno, ret, reg->btf, btf_id, flag);
 
 	return 0;
 }
@@ -4201,6 +4212,7 @@ static int check_ptr_to_map_access(struct bpf_verifier_env *env,
 {
 	struct bpf_reg_state *reg = regs + regno;
 	struct bpf_map *map = reg->map_ptr;
+	enum bpf_type_flag flag = 0;
 	const struct btf_type *t;
 	const char *tname;
 	u32 btf_id;
@@ -4238,12 +4250,12 @@ static int check_ptr_to_map_access(struct bpf_verifier_env *env,
 		return -EACCES;
 	}
 
-	ret = btf_struct_access(&env->log, btf_vmlinux, t, off, size, atype, &btf_id);
+	ret = btf_struct_access(&env->log, btf_vmlinux, t, off, size, atype, &btf_id, &flag);
 	if (ret < 0)
 		return ret;
 
 	if (value_regno >= 0)
-		mark_btf_ld_reg(env, regs, value_regno, ret, btf_vmlinux, btf_id);
+		mark_btf_ld_reg(env, regs, value_regno, ret, btf_vmlinux, btf_id, flag);
 
 	return 0;
 }
@@ -4444,7 +4456,8 @@ static int check_mem_access(struct bpf_verifier_env *env, int insn_idx, u32 regn
 		if (err < 0)
 			return err;
 
-		err = check_ctx_access(env, insn_idx, off, size, t, &reg_type, &btf, &btf_id);
+		err = check_ctx_access(env, insn_idx, off, size, t, &reg_type, &btf,
+				       &btf_id);
 		if (err)
 			verbose_linfo(env, insn_idx, "; ");
 		if (!err && t == BPF_READ && value_regno >= 0) {
@@ -13054,6 +13067,7 @@ static int jit_subprogs(struct bpf_verifier_env *env)
 
 	prog->jited = 1;
 	prog->bpf_func = func[0]->bpf_func;
+	prog->jited_len = func[0]->jited_len;
 	prog->aux->func = func;
 	prog->aux->func_cnt = env->subprog_cnt;
 	bpf_prog_jit_attempt_done(prog);
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index 06a9e220069e..a2024ba32a20 100644
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -1235,6 +1235,8 @@ bpf_tracing_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
 		return &bpf_get_task_stack_proto;
 	case BPF_FUNC_copy_from_user:
 		return prog->aux->sleepable ? &bpf_copy_from_user_proto : NULL;
+	case BPF_FUNC_copy_from_user_task:
+		return prog->aux->sleepable ? &bpf_copy_from_user_task_proto : NULL;
 	case BPF_FUNC_snprintf_btf:
 		return &bpf_snprintf_btf_proto;
 	case BPF_FUNC_per_cpu_ptr: