disable deprecated BPF loader deploys (#23757)

programs/bpf/tests/programs.rs

@@ -551,10 +551,14 @@ fn test_program_bpf_loader_deprecated() {
         println!("Test program: {:?}", program);
 
         let GenesisConfigInfo {
-            genesis_config,
+            mut genesis_config,
             mint_keypair,
             ..
         } = create_genesis_config(50);
+        genesis_config
+            .accounts
+            .remove(&solana_sdk::feature_set::disable_deprecated_loader::id())
+            .unwrap();
         let mut bank = Bank::new_for_tests(&genesis_config);
         let (name, id, entrypoint) = solana_bpf_loader_deprecated_program!();
         bank.add_builtin(&name, &id, entrypoint);
@@ -2039,19 +2043,13 @@ fn test_program_bpf_disguised_as_bpf_loader() {
             ..
         } = create_genesis_config(50);
         let mut bank = Bank::new_for_tests(&genesis_config);
-        let (name, id, entrypoint) = solana_bpf_loader_deprecated_program!();
+        let (name, id, entrypoint) = solana_bpf_loader_program!();
         bank.add_builtin(&name, &id, entrypoint);
         let bank_client = BankClient::new(bank);
 
-        let program_id = load_bpf_program(
-            &bank_client,
-            &bpf_loader_deprecated::id(),
-            &mint_keypair,
-            program,
-        );
+        let program_id = load_bpf_program(&bank_client, &bpf_loader::id(), &mint_keypair, program);
         let account_metas = vec![AccountMeta::new_readonly(program_id, false)];
-        let instruction =
-            Instruction::new_with_bytes(bpf_loader_deprecated::id(), &[1], account_metas);
+        let instruction = Instruction::new_with_bytes(bpf_loader::id(), &[1], account_metas);
         let result = bank_client.send_and_confirm_instruction(&mint_keypair, instruction);
         assert_eq!(
             result.unwrap_err().unwrap(),

programs/bpf_loader/src/lib.rs

@@ -44,8 +44,8 @@ use {
         entrypoint::{HEAP_LENGTH, SUCCESS},
         feature_set::{
             cap_accounts_data_len, disable_bpf_deprecated_load_instructions,
-            disable_bpf_unresolved_symbols_at_runtime, do_support_realloc,
-            reduce_required_deploy_balance, requestable_heap_size,
+            disable_bpf_unresolved_symbols_at_runtime, disable_deprecated_loader,
+            do_support_realloc, reduce_required_deploy_balance, requestable_heap_size,
         },
         instruction::{AccountMeta, InstructionError},
         keyed_account::{keyed_account_at_index, KeyedAccount},
@@ -387,6 +387,10 @@ fn process_instruction_common(
         )
     } else {
         debug_assert_eq!(first_instruction_account, 1);
+
+        let disable_deprecated_loader = invoke_context
+            .feature_set
+            .is_active(&disable_deprecated_loader::id());
         if bpf_loader_upgradeable::check_id(program_id) {
             process_loader_upgradeable_instruction(
                 first_instruction_account,
@@ -394,13 +398,18 @@ fn process_instruction_common(
                 invoke_context,
                 use_jit,
             )
-        } else if bpf_loader::check_id(program_id) || bpf_loader_deprecated::check_id(program_id) {
+        } else if bpf_loader::check_id(program_id)
+            || (!disable_deprecated_loader && bpf_loader_deprecated::check_id(program_id))
+        {
             process_loader_instruction(
                 first_instruction_account,
                 instruction_data,
                 invoke_context,
                 use_jit,
             )
+        } else if disable_deprecated_loader && bpf_loader_deprecated::check_id(program_id) {
+            ic_logger_msg!(log_collector, "Deprecated loader is no longer supported");
+            Err(InstructionError::UnsupportedProgramId)
         } else {
             ic_logger_msg!(log_collector, "Invalid BPF loader id");
             Err(InstructionError::IncorrectProgramId)

sdk/src/feature_set.rs

@@ -327,6 +327,10 @@ pub mod limit_secp256k1_recovery_id {
     solana_sdk::declare_id!("7g9EUwj4j7CS21Yx1wvgWLjSZeh5aPq8x9kpoPwXM8n8");
 }
 
+pub mod disable_deprecated_loader {
+    solana_sdk::declare_id!("GTUMCZ8LTNxVfxdrw7ZsDFTxXb7TutYkzJnFwinpE6dg");
+}
+
 lazy_static! {
     /// Map of feature identifiers to user-visible description
     pub static ref FEATURE_NAMES: HashMap<Pubkey, &'static str> = [
@@ -403,6 +407,7 @@ lazy_static! {
         (syscall_saturated_math::id(), "syscalls use saturated math"),
         (check_physical_overlapping::id(), "check physical overlapping regions"),
         (limit_secp256k1_recovery_id::id(), "limit secp256k1 recovery id"),
+        (disable_deprecated_loader::id(), "disable the deprecated BPF loader"),
         /*************** ADD NEW FEATURES HERE ***************/
     ]
     .iter()