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stake-pool: Add lamports check for transient stake account on decrease #3805

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merged 1 commit into from
Nov 19, 2022
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stake-pool: Add lamports check for transient stake account on decrease #3805

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10 changes: 6 additions & 4 deletions stake-pool/program/src/processor.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1214,11 +1214,14 @@ impl Processor {
&[transient_stake_bump_seed],
];

let stake_minimum_delegation = stake::tools::get_minimum_delegation()?;
let stake_rent = rent.minimum_balance(std::mem::size_of::<stake::state::StakeState>());
if lamports <= stake_rent {
let current_minimum_lamports =
stake_rent.saturating_add(minimum_delegation(stake_minimum_delegation));
if lamports < current_minimum_lamports {
msg!(
"Need more than {} lamports for transient stake to be rent-exempt, {} provided",
stake_rent,
"Need at least {} lamports for transient stake meet minimum delegation and rent-exempt requirements, {} provided",
current_minimum_lamports,
lamports
);
return Err(ProgramError::AccountNotRentExempt);
Expand All @@ -1228,7 +1231,6 @@ impl Processor {
.lamports()
.checked_sub(lamports)
.ok_or(ProgramError::InsufficientFunds)?;
let stake_minimum_delegation = stake::tools::get_minimum_delegation()?;
let required_lamports = minimum_stake_lamports(&meta, stake_minimum_delegation);
if remaining_lamports < required_lamports {
msg!("Need at least {} lamports in the stake account after decrease, {} requested, {} is the current possible maximum",
Expand Down