bpf: add missing fsession to the verifier log

The fsession attach type is missed in the verifier log in
check_get_func_ip(), bpf_check_attach_target() and check_attach_btf_id().
Update them to make the verifier log proper. Meanwhile, update the
corresponding selftests.

Acked-by: Leon Hwang <leon.hwang@linux.dev>
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Link: https://lore.kernel.org/r/20260412060346.142007-2-dongml2@chinatelecom.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

3 files changed, 10 insertions, 10 deletions

diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 817eb7815011..4fa9d2bc07f6 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -10152,7 +10152,7 @@ static int check_get_func_ip(struct bpf_verifier_env *env)
 
 	if (type == BPF_PROG_TYPE_TRACING) {
 		if (!bpf_prog_has_trampoline(env->prog)) {
-			verbose(env, "func %s#%d supported only for fentry/fexit/fmod_ret programs\n",
+			verbose(env, "func %s#%d supported only for fentry/fexit/fsession/fmod_ret programs\n",
 				func_id_name(func_id), func_id);
 			return -ENOTSUPP;
 		}
@@ -19135,7 +19135,7 @@ int bpf_check_attach_target(struct bpf_verifier_log *log,
 	btf = tgt_prog ? tgt_prog->aux->btf : prog->aux->attach_btf;
 	if (!btf) {
 		bpf_log(log,
-			"FENTRY/FEXIT program can only be attached to another program annotated with BTF\n");
+			"Tracing program can only be attached to another program annotated with BTF\n");
 		return -EINVAL;
 	}
 	t = btf_type_by_id(btf, btf_id);
@@ -19171,7 +19171,7 @@ int bpf_check_attach_target(struct bpf_verifier_log *log,
 		if (aux->func && aux->func[subprog]->aux->exception_cb) {
 			bpf_log(log,
 				"%s programs cannot attach to exception callback\n",
-				prog_extension ? "Extension" : "FENTRY/FEXIT");
+				prog_extension ? "Extension" : "Tracing");
 			return -EINVAL;
 		}
 		conservative = aux->func_info_aux[subprog].unreliable;
@@ -19260,7 +19260,7 @@ int bpf_check_attach_target(struct bpf_verifier_log *log,
 	case BPF_TRACE_RAW_TP:
 		if (tgt_prog) {
 			bpf_log(log,
-				"Only FENTRY/FEXIT progs are attachable to another BPF prog\n");
+				"Only FENTRY/FEXIT/FSESSION progs are attachable to another BPF prog\n");
 			return -EINVAL;
 		}
 		if (!btf_type_is_typedef(t)) {
@@ -19526,7 +19526,7 @@ static int check_attach_btf_id(struct bpf_verifier_env *env)
 	}
 
 	if (prog->sleepable && !can_be_sleepable(prog)) {
-		verbose(env, "Only fentry/fexit/fmod_ret, lsm, iter, uprobe, and struct_ops programs can be sleepable\n");
+		verbose(env, "Only fentry/fexit/fsession/fmod_ret, lsm, iter, uprobe, and struct_ops programs can be sleepable\n");
 		return -EINVAL;
 	}
 
diff --git a/tools/testing/selftests/bpf/prog_tests/exceptions.c b/tools/testing/selftests/bpf/prog_tests/exceptions.c
index 84ab73e08b0e..e8cbaf2a3e82 100644
--- a/tools/testing/selftests/bpf/prog_tests/exceptions.c
+++ b/tools/testing/selftests/bpf/prog_tests/exceptions.c
@@ -128,7 +128,7 @@ static void test_exceptions_success(void)
 				       bpf_program__fd(skel->progs.exception_ext_mod_cb_runtime),
 				       "exception_cb_mod"), "set_attach_target"))
 				goto done;
-		}), "FENTRY/FEXIT programs cannot attach to exception callback", 0);
+		}), "Tracing programs cannot attach to exception callback", 0);
 
 	if (test__start_subtest("throwing fentry -> exception_cb"))
 		RUN_EXT(-EINVAL, true, ({
@@ -138,7 +138,7 @@ static void test_exceptions_success(void)
 				       bpf_program__fd(skel->progs.exception_ext_mod_cb_runtime),
 				       "exception_cb_mod"), "set_attach_target"))
 				goto done;
-		}), "FENTRY/FEXIT programs cannot attach to exception callback", 0);
+		}), "Tracing programs cannot attach to exception callback", 0);
 
 	if (test__start_subtest("non-throwing fexit -> exception_cb"))
 		RUN_EXT(-EINVAL, true, ({
@@ -148,7 +148,7 @@ static void test_exceptions_success(void)
 				       bpf_program__fd(skel->progs.exception_ext_mod_cb_runtime),
 				       "exception_cb_mod"), "set_attach_target"))
 				goto done;
-		}), "FENTRY/FEXIT programs cannot attach to exception callback", 0);
+		}), "Tracing programs cannot attach to exception callback", 0);
 
 	if (test__start_subtest("throwing fexit -> exception_cb"))
 		RUN_EXT(-EINVAL, true, ({
@@ -158,7 +158,7 @@ static void test_exceptions_success(void)
 				       bpf_program__fd(skel->progs.exception_ext_mod_cb_runtime),
 				       "exception_cb_mod"), "set_attach_target"))
 				goto done;
-		}), "FENTRY/FEXIT programs cannot attach to exception callback", 0);
+		}), "Tracing programs cannot attach to exception callback", 0);
 
 	if (test__start_subtest("throwing extension (with custom cb) -> exception_cb"))
 		RUN_EXT(-EINVAL, true, ({
diff --git a/tools/testing/selftests/bpf/verifier/sleepable.c b/tools/testing/selftests/bpf/verifier/sleepable.c
index 1f0d2bdc673f..c2b7f5ebf168 100644
--- a/tools/testing/selftests/bpf/verifier/sleepable.c
+++ b/tools/testing/selftests/bpf/verifier/sleepable.c
@@ -85,7 +85,7 @@
 	.expected_attach_type = BPF_TRACE_RAW_TP,
 	.kfunc = "sched_switch",
 	.result = REJECT,
-	.errstr = "Only fentry/fexit/fmod_ret, lsm, iter, uprobe, and struct_ops programs can be sleepable",
+	.errstr = "Only fentry/fexit/fsession/fmod_ret, lsm, iter, uprobe, and struct_ops programs can be sleepable",
 	.flags = BPF_F_SLEEPABLE,
 	.runs = -1,
 },