## Overview
This PR fixes a race condition during blockchain shutdown where snapshot
generation could continue accessing the trie database after it has been
closed, leading to iterator errors. We noticed this in one of our nodes
on https://github.com/ava-labs/avalanchego, which relies on an older
version of geth with the same issue (so this behavior does happen!).
During node shutdown, the following sequence occurs:
1. `BlockChain.Stop()` calls `snaps.Release()` to clean up snapshot
resources
2. `Release()` only resets the cache but doesn't stop the generator
goroutine
3. The trie database is then closed via `triedb.Close()`
4. The still-running generator attempts to iterate storage tries
5. Iterator fails because the database is closed (`"Generator failed to
iterate storage trie"`)
## Problem
There are three related bugs:
1. `Release()` doesn't stop generation: The `diskLayer.Release()` method
only resets the cache without stopping ongoing snapshot generation,
leaving the generator goroutine running after database closure.
2. `stopGeneration()` has an incorrect completion check: The
`stopGeneration()` method checks `genMarker != nil` to determine if
generation is running. However, `genMarker` is set to nil when
generation completes successfully, even though the generator goroutine
is still waiting for the abort signal at the end of `generate()`. See
line 705 in `generate.go`:
eaaa5b716d/core/state/snapshot/generate.go (L699-L707)
This means `stopGeneration()` returns early without sending the abort
signal.
3. Node shutdown doesn't stop generation: During shutdown, no code path
calls `stopGeneration()` or sends the abort signal to the generator,
causing the generator to access a closed database and error.
## Fix
- Modified `diskLayer.Release()` to call `stopGeneration()` before
releasing resources
- Added cancelation architecture, removing reliance on someone having to
wait
- Fixed `stopGeneration()` to properly and safely stop snapshot
generation
- Added `TestGenerateGoroutineLeak` to verify the fix and prevent
regression. The test fails without the fix and passes with it.
- The test creates a snapshot with active generation, waits for
completion, then calls `Release()`, and uses `go.uber.org/goleak` to
assert no generator goroutine survives.
- Without the fix, the test fails: `Release()` returns without stopping
the generator, which stays parked at `generate.go:705` waiting for an
abort signal that never comes:
```
--- FAIL: TestGenerateGoroutineLeak (0.88s)
generate_test.go: found unexpected goroutines:
[Goroutine 6 in state chan receive, with
core/state/snapshot.(*diskLayer).generate on top of the stack:
core/state/snapshot.(*diskLayer).generate(...)
core/state/snapshot/generate.go:705
created by core/state/snapshot.generateSnapshot
core/state/snapshot/generate.go:79 ]
```
- With the fix, the test passes: `Release()` -> `stopGeneration()`
blocks until the generator goroutine has fully exited, so nothing leaks
Note that this fix follows the same pattern used in `Tree.Disable()` in
https://github.com/ethereum/go-ethereum/pull/30040, which introduced
`stopGeneration()` for use in `Disable()` and `Rebuild()` but didn't
address the shutdown path.
The test follows the same pattern used in
`TestCheckSimBackendGoroutineLeak`
## Summary
- Add `grpc://` and `grpcs://` URL scheme support for OTLP trace export
alongside existing `http://`/`https://`
- The OTLP spec defines two transports: HTTP (port 4318) and gRPC (port
4317). Many observability backends (Jaeger, Tempo, Datadog) prefer gRPC
for lower overhead
- Both `otlptracehttp` and `otlptracegrpc` return `*otlptrace.Exporter`,
so only exporter construction changes — everything downstream (batch
processor, tracer provider, lifecycle) is untouched
- Update flag usage strings to be transport-agnostic
## Example usage
```
geth --rpc.telemetry --rpc.telemetry.endpoint grpc://localhost:4317
geth --rpc.telemetry --rpc.telemetry.endpoint grpcs://tempo-grpc.example.com:443
```
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Updates go-eth-kzg to
https://github.com/crate-crypto/go-eth-kzg/releases/tag/v1.5.0
Significantly reduces the allocations in VerifyCellProofBatch which is
around ~5% of all allocations on my node
---------
Co-authored-by: Guillaume Ballet <3272758+gballet@users.noreply.github.com>
This PR adds OpenTelemetry tracing configuration to geth via
command-line flags. When enabled, geth initializes the global
OpenTelemetry TracerProvider and installs standard trace context
propagation. When disabled (the default), tracing remains a no-op and
behavior is unchanged.
Co-authored-by: Felix Lange <fjl@twurst.com>
This adds support for Grafana Pyroscope, a continuous profiling solution.
The client is configured similarly to metrics, i.e. run
geth --pyroscope --pyroscope.server=https://...
This commit is a resubmit of #33261 with some changes.
---------
Co-authored-by: Carlos Bermudez Porto <cbermudez.dev@gmail.com>
Add Open Telemetry tracing inside the RPC server to help attribute runtime costs within `handler.handleCall()`. In particular, it allows us to distinguish time spent decoding arguments, invoking methods via reflection, and actually executing the method and constructing/encoding JSON responses.
---------
Co-authored-by: lightclient <lightclient@protonmail.com>
In order to reduce the amount of code that is embedded into the keeper
binary, I am removing all the verkle code that uses go-verkle and
go-ipa. This will be followed by further PRs that are more like stubs to
replace code when the keeper build is detected.
I'm keeping the binary tree of course. This means that you will still
see `isVerkle` variables all over the codebase, but they will be renamed
when code is touched (i.e. this is not an invitation for 30+ AI slop
PRs).
---------
Co-authored-by: Gary Rong <garyrong0905@gmail.com>
Bumps
[github.com/consensys/gnark-crypto](https://github.com/consensys/gnark-crypto)
from 0.18.0 to 0.18.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/consensys/gnark-crypto/releases">github.com/consensys/gnark-crypto's
releases</a>.</em></p>
<blockquote>
<h2>v0.18.1</h2>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/Consensys/gnark-crypto/compare/v0.18.0...v0.18.1">https://github.com/Consensys/gnark-crypto/compare/v0.18.0...v0.18.1</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/Consensys/gnark-crypto/blob/master/CHANGELOG.md">github.com/consensys/gnark-crypto's
changelog</a>.</em></p>
<blockquote>
<h2>[v0.18.1] - 2025-10-28</h2>
<h3>Docs</h3>
<ul>
<li>add CHANGELOG for 0.18.1</li>
</ul>
<h3>Perf</h3>
<ul>
<li>limit memory allocation during Vector deserialization (<a
href="https://redirect.github.com/Consensys/gnark-crypto/issues/759">#759</a>)</li>
</ul>
<p><!-- raw HTML omitted --><!-- raw HTML omitted --></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="fb04e95c3b"><code>fb04e95</code></a>
docs: add CHANGELOG for 0.18.1</li>
<li><a
href="0a4d04ae62"><code>0a4d04a</code></a>
perf: limit memory allocation during Vector deserialization (<a
href="https://redirect.github.com/consensys/gnark-crypto/issues/759">#759</a>)</li>
<li>See full diff in <a
href="https://github.com/consensys/gnark-crypto/compare/v0.18.0...v0.18.1">compare
view</a></li>
</ul>
</details>
<br />
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Dependabot will resolve any conflicts with this PR as long as you don't
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`@dependabot rebase`.
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You can disable automated security fix PRs for this repo from the
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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Fix#33212.
This PR remove `github.com/olekukonko/tablewriter` from dependencies and
use a naive stub implementation.
`github.com/olekukonko/tablewriter` is used to format database inspection
output neatly. However, it requires custom adjustments for TinyGo and is
incompatible with the latest version.
---------
Co-authored-by: MariusVanDerWijden <m.vanderwijden@live.de>
Uses the go module's `replace` directive to delegate keccak computation
to precompiles.
This is still in draft because it needs more testing. Also, it relies on
a PR that I created, that hasn't been merged yet.
_Note that this PR doesn't implement the stateful keccak state
structure, and it reverts to the current behavior. This is a bit silly
since this is what is used in the tree root computation. The runtime
doesn't currently export the sponge. I will see if I can fix that in a
further PR, but it is going to take more time. In the meantime, this is
a useful first step_
https://go.dev/ref/mod#go-work-file advises against checking `go.work`
files because they can interfere with local development. We added the
workspace file in order to make `go test` and other tools work across
multiple modules. But it seems to cause weird issues with the
`go.work.sum` file being modified, etc.
So with this PR, we instead run all the `ci.go` commands for all modules
in the workspace manually.
Keeper is a zmvm guest program that runs the block transition.
It relies on the zkvm maker implementing `getInput`. For now, we only
provide a single implementation for the 'ziren' VM.
Why keeper?
In the _Mass Effect_ lore, the keepers are animals (?) who maintain the
citadel. Nothing is known from them, and attempts at tampering with them
have failed, as they self-destruct upon inquiry. They have a secret,
nefarious purpose that is only revealed later in the game series, don't
want any spoilers so I didn't dig deeper. All in all, a good metaphor
for zkvms.
---------
Co-authored-by: weilzkm <140377101+weilzkm@users.noreply.github.com>
Co-authored-by: Felix Lange <fjl@twurst.com>
