Merge tag 'bpf-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Pull bpf updates from Alexei Starovoitov:
 "For this merge window we're splitting BPF pull request into three for
  higher visibility: main changes, res_spin_lock, try_alloc_pages.

  These are the main BPF changes:

   - Add DFA-based live registers analysis to improve verification of
     programs with loops (Eduard Zingerman)

   - Introduce load_acquire and store_release BPF instructions and add
     x86, arm64 JIT support (Peilin Ye)

   - Fix loop detection logic in the verifier (Eduard Zingerman)

   - Drop unnecesary lock in bpf_map_inc_not_zero() (Eric Dumazet)

   - Add kfunc for populating cpumask bits (Emil Tsalapatis)

   - Convert various shell based tests to selftests/bpf/test_progs
     format (Bastien Curutchet)

   - Allow passing referenced kptrs into struct_ops callbacks (Amery
     Hung)

   - Add a flag to LSM bpf hook to facilitate bpf program signing
     (Blaise Boscaccy)

   - Track arena arguments in kfuncs (Ihor Solodrai)

   - Add copy_remote_vm_str() helper for reading strings from remote VM
     and bpf_copy_from_user_task_str() kfunc (Jordan Rome)

   - Add support for timed may_goto instruction (Kumar Kartikeya
     Dwivedi)

   - Allow bpf_get_netns_cookie() int cgroup_skb programs (Mahe Tardy)

   - Reduce bpf_cgrp_storage_busy false positives when accessing cgroup
     local storage (Martin KaFai Lau)

   - Introduce bpf_dynptr_copy() kfunc (Mykyta Yatsenko)

   - Allow retrieving BTF data with BTF token (Mykyta Yatsenko)

   - Add BPF kfuncs to set and get xattrs with 'security.bpf.' prefix
     (Song Liu)

   - Reject attaching programs to noreturn functions (Yafang Shao)

   - Introduce pre-order traversal of cgroup bpf programs (Yonghong
     Song)"

* tag 'bpf-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (186 commits)
  selftests/bpf: Add selftests for load-acquire/store-release when register number is invalid
  bpf: Fix out-of-bounds read in check_atomic_load/store()
  libbpf: Add namespace for errstr making it libbpf_errstr
  bpf: Add struct_ops context information to struct bpf_prog_aux
  selftests/bpf: Sanitize pointer prior fclose()
  selftests/bpf: Migrate test_xdp_vlan.sh into test_progs
  selftests/bpf: test_xdp_vlan: Rename BPF sections
  bpf: clarify a misleading verifier error message
  selftests/bpf: Add selftest for attaching fexit to __noreturn functions
  bpf: Reject attaching fexit/fmod_ret to __noreturn functions
  bpf: Only fails the busy counter check in bpf_cgrp_storage_get if it creates storage
  bpf: Make perf_event_read_output accessible in all program types.
  bpftool: Using the right format specifiers
  bpftool: Add -Wformat-signedness flag to detect format errors
  selftests/bpf: Test freplace from user namespace
  libbpf: Pass BPF token from find_prog_btf_id to BPF_BTF_GET_FD_BY_ID
  bpf: Return prog btf_id without capable check
  bpf: BPF token support for BPF_BTF_GET_FD_BY_ID
  bpf, x86: Fix objtool warning for timed may_goto
  bpf: Check map->record at the beginning of check_and_free_fields()
  ...

1 files changed, 9 insertions, 5 deletions

diff --git a/tools/bpf/bpftool/map.c b/tools/bpf/bpftool/map.c
index b89bd792c1d5..81cc668b4b05 100644
--- a/tools/bpf/bpftool/map.c
+++ b/tools/bpf/bpftool/map.c
@@ -285,7 +285,7 @@ static void print_entry_plain(struct bpf_map_info *info, unsigned char *key,
 		}
 		if (info->value_size) {
 			for (i = 0; i < n; i++) {
-				printf("value (CPU %02d):%c",
+				printf("value (CPU %02u):%c",
 				       i, info->value_size > 16 ? '\n' : ' ');
 				fprint_hex(stdout, value + i * step,
 					   info->value_size, " ");
@@ -316,7 +316,7 @@ static char **parse_bytes(char **argv, const char *name, unsigned char *val,
 	}
 
 	if (i != n) {
-		p_err("%s expected %d bytes got %d", name, n, i);
+		p_err("%s expected %u bytes got %u", name, n, i);
 		return NULL;
 	}
 
@@ -462,7 +462,7 @@ static void show_map_header_json(struct bpf_map_info *info, json_writer_t *wtr)
 		jsonw_string_field(wtr, "name", info->name);
 
 	jsonw_name(wtr, "flags");
-	jsonw_printf(wtr, "%d", info->map_flags);
+	jsonw_printf(wtr, "%u", info->map_flags);
 }
 
 static int show_map_close_json(int fd, struct bpf_map_info *info)
@@ -588,7 +588,7 @@ static int show_map_close_plain(int fd, struct bpf_map_info *info)
 			if (prog_type_str)
 				printf("owner_prog_type %s  ", prog_type_str);
 			else
-				printf("owner_prog_type %d  ", prog_type);
+				printf("owner_prog_type %u  ", prog_type);
 		}
 		if (owner_jited)
 			printf("owner%s jited",
@@ -615,7 +615,7 @@ static int show_map_close_plain(int fd, struct bpf_map_info *info)
 		printf("\n\t");
 
 	if (info->btf_id)
-		printf("btf_id %d", info->btf_id);
+		printf("btf_id %u", info->btf_id);
 
 	if (frozen)
 		printf("%sfrozen", info->btf_id ? "  " : "");
@@ -1270,6 +1270,10 @@ static int do_create(int argc, char **argv)
 		} else if (is_prefix(*argv, "name")) {
 			NEXT_ARG();
 			map_name = GET_ARG();
+			if (strlen(map_name) > BPF_OBJ_NAME_LEN - 1) {
+				p_info("Warning: map name is longer than %u characters, it will be truncated.",
+				      BPF_OBJ_NAME_LEN - 1);
+			}
 		} else if (is_prefix(*argv, "key")) {
 			if (parse_u32_arg(&argc, &argv, &key_size,
 					  "key size"))