From 5506b5d5a1476faf72fd5557f7950913ddf63d0e Mon Sep 17 00:00:00 2001
From: Trent Nelson <490004+t-nelson@users.noreply.github.com>
Date: Tue, 2 Dec 2025 12:19:40 -0700
Subject: [PATCH] feat(ledger-tool): fix ed25519 program testnet deployment
 (#9352)

(cherry picked from commit 5f82055840289bad9ab22ed79bd27ff2ae2b7995)
---
 ledger-tool/src/main.rs | 56 ++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 55 insertions(+), 1 deletion(-)

diff --git a/ledger-tool/src/main.rs b/ledger-tool/src/main.rs
index 82e7abddead6ad..0463231a5263c0 100644
--- a/ledger-tool/src/main.rs
+++ b/ledger-tool/src/main.rs
@@ -1516,6 +1516,14 @@ fn main() {
                         .long("enable-capitalization-change")
                         .takes_value(false)
                         .help("If snapshot creation should succeed with a capitalization delta."),
+                )
+                .arg(
+                    Arg::with_name("fix_testnet_ed25519_precompile_account")
+                        .long("fix-testnet-ed25519-precompile-account")
+                        .help(
+                            "correct misassigned owner and data on testnet ed25519 precompile \
+                             account deployment",
+                        ),
                 ),
         )
         .subcommand(
@@ -2072,6 +2080,9 @@ fn main() {
                         archive_format
                     };
 
+                    let fix_testnet_ed25519_precompile_account =
+                        arg_matches.is_present("fix_testnet_ed25519_precompile_account");
+
                     let genesis_config = open_genesis_config_by(&ledger_path, arg_matches);
                     let mut process_options = parse_process_options(&ledger_path, arg_matches);
 
@@ -2172,7 +2183,8 @@ fn main() {
                         || !feature_gates_to_deactivate.is_empty()
                         || !vote_accounts_to_destake.is_empty()
                         || faucet_pubkey.is_some()
-                        || bootstrap_validator_pubkeys.is_some();
+                        || bootstrap_validator_pubkeys.is_some()
+                        || fix_testnet_ed25519_precompile_account;
 
                     if child_bank_required {
                         let mut child_bank = Bank::new_from_parent(
@@ -2284,6 +2296,48 @@ fn main() {
                         }
                     }
 
+                    if fix_testnet_ed25519_precompile_account {
+                        use solana_sdk_ids::{ed25519_program, native_loader, system_program};
+
+                        if bank.cluster_type() != ClusterType::Testnet {
+                            eprintln!(
+                                "--fix-testnet-ed25519-precompile-account is incompatible with \
+                                 the supplied base snapshot"
+                            );
+                            std::process::exit(1);
+                        }
+
+                        let mut ed25519_program_account =
+                            bank.get_account(&ed25519_program::id()).unwrap_or_else(|| {
+                                eprintln!("Error: `{}` is not deployed", ed25519_program::id());
+                                exit(1);
+                            });
+
+                        if ed25519_program_account.owner() != &system_program::id() {
+                            eprintln!(
+                                "Error: expected `{}` to be owned by `{}`, found `{}`",
+                                ed25519_program::id(),
+                                system_program::id(),
+                                ed25519_program_account.owner(),
+                            );
+                            exit(1);
+                        }
+
+                        if !ed25519_program_account.data().is_empty() {
+                            eprintln!(
+                                "Error: expected `{}` account data to be empty, found {} bytes",
+                                ed25519_program::id(),
+                                ed25519_program_account.data().len(),
+                            );
+                            exit(1);
+                        }
+
+                        ed25519_program_account.set_owner(native_loader::id());
+                        ed25519_program_account.set_data_from_slice(b"ed25519_program");
+
+                        bank.store_account(&ed25519_program::id(), &ed25519_program_account);
+                    }
+
                     if let Some(bootstrap_validator_pubkeys) = bootstrap_validator_pubkeys {
                         assert_eq!(bootstrap_validator_pubkeys.len() % 3, 0);