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Fuzz fix #660

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49373a8
Fuzz fix
dawid-sw Aug 28, 2026
bfc0708
Merge branch 'main' into fuzz-fix
dawid-sw Aug 28, 2026
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31 changes: 25 additions & 6 deletions trident-tests/fuzz_0/test_fuzz.rs
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Original file line number Diff line number Diff line change
@@ -1,10 +1,12 @@
use std::collections::{HashMap, HashSet};
use std::collections::HashMap;
use std::collections::HashSet;

use fixed::types::I80F48;
use fuzz_accounts::*;
use trident_fuzz::fuzzing::*;

use crate::invariants::{AccountDataSnapshot, BankBaseline};
use crate::invariants::AccountDataSnapshot;
use crate::invariants::BankBaseline;

use crate::bank::Currency;
use crate::bank::FuzzTestBank;
Expand Down Expand Up @@ -59,6 +61,16 @@ struct FuzzTest {
users: Vec<User>,
// ================================================================================================
// Kamino integration accounts
// Fork-time Unix timestamp captured once in `new()`. Trident's per-
// iteration reset restores accounts but NOT the Clock sysvar, so the
// `forward_in_time` drift from `flow9` (100..100_000 s per call) and
// `#[end]` (3_600 s) accumulates across every iteration a worker thread
// runs. After ~19K iterations the virtual clock passes `u32::MAX`
// (~Feb 2106) and Kamino's `LastUpdate::update` panics
// ("time too far into the future") in `refresh_reserves_batch`, so
// every `KaminoInitObligation` in `#[init]` fails for the rest of the
// campaign. `#[init]` warps back to this base each iteration.
base_timestamp: i64,
kamino_main_lending_market: Pubkey,
kamino_usdc_reserve_liquidity_supply: Pubkey,
kamino_usdc_reserve_collateral_mint: Pubkey,
Expand Down Expand Up @@ -305,9 +317,11 @@ impl FuzzTest {
// Mainnet Slot
let slot = utils::get_slot();
trident.warp_to_slot(slot);
let base_timestamp = trident.get_current_timestamp();

Self {
trident,
base_timestamp,
payer,
liquidator,
seeder,
Expand Down Expand Up @@ -351,6 +365,10 @@ impl FuzzTest {

#[init]
fn start(&mut self) {
// Bound the virtual clock: see `base_timestamp`. Accounts were
// just reset to fork state, so rewinding the Clock is consistent.
self.trident.warp_to_timestamp(self.base_timestamp);

// ================================================================================================
// Initialization
self.init_foundation();
Expand Down Expand Up @@ -593,9 +611,7 @@ impl FuzzTest {
let _ = self.lending_flashloan(
&user,
vec![borrow_eth, borrow_btc, repay_btc, repay_eth],
Some(
format!("Multi-bank flashloan (ETH+BTC) for {}", user.name).as_str(),
),
Some(format!("Multi-bank flashloan (ETH+BTC) for {}", user.name).as_str()),
Some(vec![self.eth_bank.address, self.btc_bank.address]),
);
}
Expand Down Expand Up @@ -1052,7 +1068,10 @@ impl FuzzTest {
.users
.iter()
.map(|u| u.marginfi_account)
.chain([self.seeder.marginfi_account, self.liquidator.marginfi_account])
.chain([
self.seeder.marginfi_account,
self.liquidator.marginfi_account,
])
.collect();
invariants::assert_bank_position_counts(&mut self.trident, &banks, &marginfi_accounts);

Expand Down
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