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Adds a feature gate to reject the deployment of programs with unresolved syscall symbols. (#21298)

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This commit is contained in:
Alexander Meißner
2021-12-13 20:42:47 +01:00
committed by Michael Vines
parent f9b7e24846
commit e2850c84d2
2 changed files with 15 additions and 6 deletions
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16
programs/bpf_loader/src/lib.rs
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@@ -32,8 +32,8 @@ use solana_sdk::{
entrypoint::{HEAP_LENGTH, SUCCESS},
feature_set::{
add_missing_program_error_mappings, close_upgradeable_program_accounts, fix_write_privs,
reduce_required_deploy_balance, requestable_heap_size, stop_verify_mul64_imm_nonzero,
upgradeable_close_instruction,
reduce_required_deploy_balance, reject_deployment_of_unresolved_syscalls,
requestable_heap_size, stop_verify_mul64_imm_nonzero, upgradeable_close_instruction,
},
ic_logger_msg, ic_msg,
instruction::{AccountMeta, InstructionError},
@@ -76,6 +76,7 @@ pub fn create_executor(
program_data_offset: usize,
invoke_context: &mut dyn InvokeContext,
use_jit: bool,
reject_unresolved_syscalls: bool,
) -> Result<Arc<BpfExecutor>, InstructionError> {
let syscall_registry = syscalls::register_syscalls(invoke_context).map_err(|e| {
ic_msg!(invoke_context, "Failed to register syscalls: {}", e);
@@ -86,6 +87,8 @@ pub fn create_executor(
max_call_depth: bpf_compute_budget.max_call_depth,
stack_frame_size: bpf_compute_budget.stack_frame_size,
enable_instruction_tracing: log_enabled!(Trace),
reject_unresolved_syscalls: reject_unresolved_syscalls
&& invoke_context.is_feature_active(&reject_deployment_of_unresolved_syscalls::id()),
verify_mul64_imm_nonzero: !invoke_context
.is_feature_active(&stop_verify_mul64_imm_nonzero::id()), // TODO: Feature gate and then remove me
..Config::default()
@@ -236,7 +239,8 @@ fn process_instruction_common(
let executor = match invoke_context.get_executor(program_id) {
Some(executor) => executor,
None => {
let executor = create_executor(0, program_data_offset, invoke_context, use_jit)?;
let executor =
create_executor(0, program_data_offset, invoke_context, use_jit, false)?;
invoke_context.add_executor(program_id, executor.clone());
executor
}
@@ -430,7 +434,7 @@ fn process_loader_upgradeable_instruction(
)?;
// Load and verify the program bits
let executor = create_executor(3, buffer_data_offset, invoke_context, use_jit)?;
let executor = create_executor(3, buffer_data_offset, invoke_context, use_jit, true)?;
invoke_context.add_executor(&new_program_id, executor);
let keyed_accounts = invoke_context.get_keyed_accounts()?;
@@ -562,7 +566,7 @@ fn process_loader_upgradeable_instruction(
}
// Load and verify the program bits
let executor = create_executor(2, buffer_data_offset, invoke_context, use_jit)?;
let executor = create_executor(2, buffer_data_offset, invoke_context, use_jit, true)?;
invoke_context.add_executor(&new_program_id, executor);
let keyed_accounts = invoke_context.get_keyed_accounts()?;
@@ -831,7 +835,7 @@ fn process_loader_instruction(
return Err(InstructionError::MissingRequiredSignature);
}
let executor = create_executor(0, 0, invoke_context, use_jit)?;
let executor = create_executor(0, 0, invoke_context, use_jit, true)?;
let keyed_accounts = invoke_context.get_keyed_accounts()?;
let program = keyed_account_at_index(keyed_accounts, 0)?;
invoke_context.add_executor(program.unsigned_key(), executor);