Aleksandr Bogomiakov
2b0c938487
A long-running rc.33 daemon reached OOM with roughly 22 GiB resident and 24 GiB swapped. Live inspection found 40 GiB and 10/20 GiB anonymous container mappings; the active worker stack and tracing metadata identified iroh's scheduled path-open retry loop. In iroh 1.2.0 every failed connection requeues the same path, while each retry visits every connection again. Separate control and data connections multiply the queue geometrically. Vendor the published iroh 1.2.0 source and select it with a workspace Cargo patch. Deduplicate retry admission and cap distinct pending paths at 64, evicting the oldest before inserting a new candidate. Keep the current and next retry batches bounded without combining control/data connections or changing wire protocols, identity derivation, authentication or state. Document source provenance, the live evidence and removal conditions. Upstream PR 4551 merged on October 6, but inspection of the official 1.3.0 crate still shows the unconditional enqueue, so that upgrade alone is not a fix. No version bump, release tag or installed-service change. The default workspace suite includes the exact vendored admission module. Three regressions failed with the original enqueue and pass with the fix: repeated failures across connections, duplicate admission at capacity, and 10,000 distinct candidates with bounded length/capacity and FIFO eviction. Transport integration tests continue using real endpoints and encryption. Checks on Linux in nix develop: - cargo fmt --all -- --check - cargo clippy --locked --workspace --all-targets -- -D warnings - cargo test --locked --workspace --all-targets, with only the inherited TSUNAGI_CONTROL_SOCKET removed from the test environment - git diff --cached --check Initial full-suite runs failed six DNS readiness checks because the inherited system socket path overrode their temporary state directories. Clearing that environment variable resolves those failures without changing application code. Root/network-dependent ignored tests and other operating systems were not run.
34 lines
1.6 KiB
Plaintext
34 lines
1.6 KiB
Plaintext
Parts of the code has been derived from tailscale, which is under the following license.
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Specifically the following files are most relevant
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- ./src/socket**
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BSD 3-Clause License
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Copyright (c) 2020 Tailscale Inc & AUTHORS.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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