* AccountSharedData: make data_mut() private
This ensures that the inner Vec is never handed out. This is in
preparation of enforcing that the capacity of the inner vec never
shrinks, which is required for direct mapping.
* Adds the feature bpf_account_data_direct_mapping.
* Remaps EbpfError::AccessViolation into InstructionError::ReadonlyDataModified.
* WIP: Memory regions for each instruction account in create_vm().
* Fix serialization benches, run both copy and !copy variants
* rbpf-cli: fix build
* BorrowedAccount: ensure that account capacity is never reduced
Accounts can be directly mapped in address space. Their capacity can't
be reduced mid transaction as that would create holes in vm address
space that point to invalid host memory.
* bpf_load: run serialization tests for both copy and !copy account data
* bpf_loader: add Serializer::write_account
* fix lints
* BorrowedAccount: make_data_mut is host only
* Fix unused import warning
* Fix lints
* cpi: add explicit direct_mapping arg to update_(callee|caller)_account
* cpi: rename account_data_or_only_realloc_padding to serialized_data
* cpi: add CallerAccount::original_data_len comment
* cpi: add update_callee_account direct_mapping test
* cpi: add test_update_caller_account_data_direct_mapping and fix bug
We used to have a bug in zeroing data when shrinking account, where we zeroed
the spare account capacity but not the realloc padding.
* cpi: add tests for mutated readonly accounts
* cpi: update_caller_account doesn't need to change .serialized_data when direct_mapping is on
* cpi: update_caller_account: ensure that account capacity is always enough
Introduce a better way to ensure that account capacity never goes below what
might be mapped in memory regions.
* cpi: zero account capacity using the newly introduced BorrowedAccount::spare_data_capacity_mut()
Before we were using BorrowedAccount::get_data_mut() to get the base pointer to
the account data, then we were slicing the spare capacity from it. Calling
get_data_mut() doesn't work if an account has been closed tho, since the
current program doesn't own the account anymore and therefore get_data_mut()
errors out.
* bpf_loader: fix same lint for the umpteenth time
* bpf_loader: map AccessViolation to ReadonlyDataModified only for account region violations
* programs/sbf: realloc: add test for large write after realloc
Add a test that after a realloc does a large write that spans the
original account length and the realloc area. This ensures that memory
mapping works correctly across the boundary.
* programs/sbf: run test_program_sbf_realloc with both direct_mapping on and off
By default test banks test with all features on. This ensures we keep
testing the existing code until the new feature is enabled.
* bpf_loader: tweak memcmp syscall
Split the actual memcmp code in a separate function. Remove check
indexing the slices since the slices are guaranteed to have the correct
length by construction.
* bpf_loader: tweak the memset syscall
Use slice::fill, which is effectively memset.
* bpf_loader: syscalls: update mem syscalls to work with non contiguous memory
With direct mapping enabled, accounts can now span multiple memory
regions.
* fix lint, rebase mem_ops
* Implement CoW for writable accounts
* Fix CI
* Move CoW to the MemoryMapping level
* Update after rbpf API change
* Fix merge screwup
* Add create_vm macro. Fix benches.
* cpi: simplify update_caller_account
Simplify the logic to update a caller's memory region when a callee
causes an account data pointer to change (eg during CoW)
* benches/bpf_loader: move serialization out of create_vm bench
* benches/bpf_loader: don't copy accounts when direct mapping is on
* Fix review nits
* bpf_loader: mem_ops: handle u64 overflow in MemoryChunkIterator::new
When starting at u64::MAX, the chunk iterator would always return the
empty sequence (None on the first next()) call, instead of returning a
memory access violation.
Use checked instead of saturating arithmetic to detect the condition and
error out.
This commit also adds more tests around boundary conditions.
* Fix loader-v3 tests: data_mut => data_as_mut_slice
* Fix CI
* bpf_loader: fix tuner bench: account must be writable
With direct mapping on, invalid writes are caught early meaning the
tuner would fail on the first store and not consume the whole budget
like the benchmark expects.
---------
Co-authored-by: Alexander Meißner <AlexanderMeissner@gmx.net>
* serialization benches: fix index_in_callee
* serialize benches: bench the whole serialize_parameters()
* Add serialization benches for max num of instruction accounts
* Replaces InstructionContext::new() by InstructionContext::configure().
Adds TransactionContext::get_next_instruction_context().
* Switch back to using references as parameters.
* Hoists InstructionContext::configure() from TransactionContext::push() into InvokeContext::push().
* Moves InstructionContext::config() to the beginning of InvokeContext::push().
* Hoists InstructionContext::configure() from InvokeContext::push() into InvokeContext::process_instruction().
* Review feedback: Updates docu comments.
* Adjusts test cases for stricter requirements.
* Removes account reset in deserialization test.
* Removes verify related test cases.
* Replicates account modification verification logic of PreAccount in BorrowedAccount.
* Adds TransactionContext::account_touched_flags.
* Adds account modification verification to the BPF ABIv0 and ABIv1 deserialization, CPI syscall and program-test.
* Replicates the total sum of all lamports verification of PreAccounts in InstructionContext
* Check that the callers instruction balance is maintained during a call / push.
* Replicates PreAccount statistics in TransactionContext.
* Disable verify() and verify_and_update() if the feature enable_early_verification_of_account_modifications is enabled.
* Moves Option<Rent> of enable_early_verification_of_account_modifications into TransactionContext::new().
* Relaxes AccountDataMeter related test cases.
* Don't touch the account if nothing changes.
* Adds two tests to trigger InstructionError::UnbalancedInstruction.
Co-authored-by: Justin Starry <justin@solana.com>
* Adds methods based on instruction_account_index to InstructionContext.
Removes methods which are based on index_in_instruction.
* Adjusts program-runtime.
* Adjusts runtime.
* Adjusts bpf loader.
* Adjusts built-in programs.
* Adjusts program-test and bpf tests.
* Removes the offset InstructionContext::get_number_of_program_accounts() from InstructionAccount::index_in_caller.
* Removes unreachable SyscallError::InvalidLength in orig_data_lens.get().
* Moves stack_height of the instruction_trace into InstructionContext.
* Uses nesting_level instead of stack_height internally in transaction_context.rs
* Uses the instruction_trace instead of the instruction_context_stack internally.
* Adds feature gate: record_instruction_in_transaction_context_push.
* Makes error handling in BorrowedAccount optional.
Adds BorrowedAccount ::get_rent_epoch().
Exposes InstructionContext::get_index_in_transaction().
Turns accounts and account_keys into pinned boxed slices.
* Introduces "unsafe" to InvokeContext::push().
* Turns &TransactionContext into &mut TransactionContext in InvokeContext.
* Push and pop InstructionContext in InvokeContext.
Makes test_process_cross_program and test_native_invoke symmetric.
Removes the borrow check from test_invoke_context_verify.
* Removes keyed_accounts from prepare_instruction()
* Removes usage of invoke_stack.
* Removes keyed_accounts from program-test.
* Removes caller_write_privileges.
* Removes keyed_accounts from BPF parameter (de-)serialization.
Alessandro Decina
Alexander Meißner
Brooks Prumo
Michael Vines
Jack May
Greg Fitzgerald