traceBlockParallel replays transactions from the parent state to build per-tx prestate for tracers. In the previous flow, Prague's parent-hash system contract processing was not applied before replay, so the prepared state could diverge from canonical block execution semantics.
This commit keeps the parallel tracing path consistent with block processing rules by applying ProcessParentBlockHash before tx replay when Prague is active.
The regression test TestTraceBlockParallelPragueParentHashSystemCall is strengthened to assert the actual EIP-2935 history slot value (ring-buffer key for block-1) equals block.ParentHash(), instead of relying on an indirect EXTCODESIZE side effect. This makes the test deterministic and directly tied to the bug.
Validation: go test ./eth/tracers -run TestTraceBlockParallelPragueParentHashSystemCall
- Fix "invalid transaction v, r, s values" error when calling debug_traceCall
on BlockSigners contract (0x89)
- Fix "nonce too low" error by respecting Message.SkipNonceChecks flag
- ApplySignTransaction now accepts *Message and uses msg.From directly
- Add fallback to signature recovery for real transactions
- Skip nonce validation when SkipNonceChecks=true (for traceCall)
- Add comprehensive unit tests for both scenarios
Root cause: BlockSigners uses special fast-path that calls
ApplySignTransaction directly, which previously attempted signature
recovery on unsigned transactions from debug_traceCall.
Fixes#1870
Here we add a Go API for running tracing plugins within the main block import process.
As an advanced user of geth, you can now create a Go file in eth/tracers/live/, and within
that file register your custom tracer implementation. Then recompile geth and select your tracer
on the command line. Hooks defined in the tracer will run whenever a block is processed.
The hook system is defined in package core/tracing. It uses a struct with callbacks, instead of
requiring an interface, for several reasons:
- We plan to keep this API stable long-term. The core/tracing hook API does not depend on
on deep geth internals.
- There are a lot of hooks, and tracers will only need some of them. Using a struct allows you
to implement only the hooks you want to actually use.
All existing tracers in eth/tracers/native have been rewritten to use the new hook system.
This change breaks compatibility with the vm.EVMLogger interface that we used to have.
If you are a user of vm.EVMLogger, please migrate to core/tracing, and sorry for breaking
your stuff. But we just couldn't have both the old and new tracing APIs coexist in the EVM.
---------
Co-authored-by: Sina M <1591639+s1na@users.noreply.github.com>
Co-authored-by: Matthieu Vachon <matthieu.o.vachon@gmail.com>
Co-authored-by: Delweng <delweng@gmail.com>
Co-authored-by: Martin HS <martin@swende.se>
This PR modifies the interface for the results of `debug_traceBlock` and `debug_traceCall` by adding the `txHash`, allowing users to identify which transaction's trace result corresponds to.
---------
Co-authored-by: sjlee1125 <47561537+sjlee1125@users.noreply.github.com>
Co-authored-by: Martin Holst Swende <martin@swende.se>
Use the new atomic types in package eth/tracers
---------
Co-authored-by: s7v7nislands <s7v7nislands@gmail.com>
Co-authored-by: Martin Holst Swende <martin@swende.se>
Co-authored-by: Sina Mahmoodi <itz.s1na@gmail.com>
Currently calling `debug_TraceTransaction` with a transaction hash that doesn't exist returns a confusing error: `genesis is not traceable`. This PR changes the behaviour to instead return an error message saying `transaction not found`
Co-authored-by: Martin Holst Swende <martin@swende.se>
Co-authored-by: Sina Mahmoodi <itz.s1na@gmail.com>
* eth/tracers: refactor traceTx to separate out struct logging
review fix
Update eth/tracers/api.go
Co-authored-by: Martin Holst Swende <martin@swende.se>
Mv ExecutionResult type to logger package
review fix
impl GetResult for StructLogger
make formatLogs private
confused exit and end..
account for intrinsicGas in structlogger, fix TraceCall test
Add Stop method to logger
Simplify traceTx
Fix test
rm logger from blockchain test
account for refund in structLogger
* use tx hooks in struct logger
* minor
* avoid executionResult in struct logger
* revert blockchain test changes
Co-authored-by: Sina Mahmoodi <1591639+s1na@users.noreply.github.com>
