Public issue detail

Runaway CPU investigation for sshd-session: unknown userspace loop at pfn_to_dma_pte

sshd-session is stuck in a likely unclassified userspace loop: 100.00% of sampled CPU passed through pfn_to_dma_pte, with repeated thread backtraces show 1 thread(s) around 0x00007efcc509a7d2 in ?? () from target:<path>.

highpackage: openssh-serversource: opensshscore: 106reports: 1

Last seen: 2026-06-17 19:14 UTC. Public JSON: /v1/issues/019d3e22-7b2d-7dd0-996a-bcf55a74d3e9

Technical snapshot

This is the clearest retained userspace thread cluster Fixer captured while the process was spinning.

Representative thread backtrace

  • Command: sshd-session: gis [priv]
  • Why Fixer classified it this way: The process is demonstrably CPU-hot, but the current syscall and symbol sample does not point to a single dominant loop family yet.
  • Thread summary: thread backtraces show 1 thread(s) around 0x00007efcc509a7d2 in ?? () from target:<path>
  • Contention signals: event-loop-wakeups, gdb-stderr: gdb: warning: Couldn't determine a path for the index cache directory.
  • Repeated loop: restart_syscall
  • Top syscalls: restart_syscall x1
  • Package: openssh-server 1:10.3p1-1
  • Kernel: 6.17.10+deb14-amd64
  • Distribution: debian
0x00007efcc509a7d2 in ?? () from target:<path>
0x00007efcc509a7ed in ?? () from target:<path>
0x00007efcc510fd76 in poll () from target:<path>
0x000056262e205f15 in ?? ()
0x000056262e208264 in ?? ()
0x000056262e1e0d0e in ?? ()
0x00007efcc5031f77 in ?? () from target:<path>
0x00007efcc5032027 in __libc_start_main () from target:<path>

Possible duplicates

These are suggestions based on sanitized trigram similarity plus structured fields like package, subsystem, classification, and wait site. They are not auto-merged.

sshd-session is stuck in a likely unclassified userspace loop: 13.50% of sampled CPU passed through unresolved offset, with repeated thread backtraces show 1 thread(s) around 0x00007f35fa09a7d2 in ?? () from target:<path>.

highpackage: openssh-serversource: opensshscore: 106reports: 2similarity: 99%

Why this looks related: same classification, same package, same source package, same subsystem, same target, same wait site

Last seen: 2026-06-27 21:56 UTC. Public page: /issues/019db544-ab14-73a0-b91c-7276539c4cf4. Public JSON: /v1/issues/019db544-ab14-73a0-b91c-7276539c4cf4

sshd-session is stuck in a likely unclassified userspace loop: 100.00% of sampled CPU passed through sock_poll, with repeated thread backtraces show 1 thread(s) around 0x00007f35fa09a7d2 in ?? () from target:<path>.

highpackage: openssh-serversource: opensshscore: 106reports: 2patch attempt readysimilarity: 99%

Why this looks related: same classification, same package, same source package, same subsystem, same target, same wait site, very similar public summary

Last seen: 2026-06-27 17:58 UTC. Public page: /issues/019dff15-4a95-7fb3-b680-40595c35ee68. Public JSON: /v1/issues/019dff15-4a95-7fb3-b680-40595c35ee68

sshd-session is stuck in a likely unclassified userspace loop: 24.67% of sampled CPU passed through __mod_node_page_state, with repeated thread backtraces show 1 thread(s) around 0x00007f57f0c9a7d2 in ?? () from target:<path>.

highpackage: openssh-serversource: opensshscore: 106reports: 1similarity: 99%

Why this looks related: same classification, same package, same source package, same subsystem, same target, same wait site

Last seen: 2026-07-08 12:09 UTC. Public page: /issues/019f2502-84ff-79d0-bc6a-164181704a53. Public JSON: /v1/issues/019f2502-84ff-79d0-bc6a-164181704a53

sshd-session is stuck in a likely unclassified userspace loop: 28.29% of sampled CPU passed through uncharge_folio, with repeated thread backtraces show 1 thread(s) around 0x00007f57f0c9a7d2 in ?? () from target:<path>.

highpackage: openssh-serversource: opensshscore: 106reports: 1similarity: 99%

Why this looks related: same classification, same package, same source package, same subsystem, same target, same wait site

Last seen: 2026-07-02 22:27 UTC. Public page: /issues/019f20e6-c120-7931-9e82-74a4401b64d9. Public JSON: /v1/issues/019f20e6-c120-7931-9e82-74a4401b64d9

sshd-session is stuck in a likely unclassified userspace loop: 10.87% of sampled CPU passed through audit_value_needs_encoding@plt, with repeated thread backtraces show 1 thread(s) around 0x00007faaa249a7d2 in ?? () from target:<path>.

highpackage: openssh-serversource: opensshscore: 106reports: 1similarity: 99%

Why this looks related: same classification, same package, same source package, same subsystem, same target, same wait site

Last seen: 2026-07-02 03:18 UTC. Public page: /issues/019f1fb8-ca6b-7870-b817-624c79af0149. Public JSON: /v1/issues/019f1fb8-ca6b-7870-b817-624c79af0149

sshd-session is stuck in a likely unclassified userspace loop: 12.29% of sampled CPU passed through getuid@plt, with repeated thread backtraces show 1 thread(s) around 0x00007f4a7a09a7d2 in ?? () from target:<path>.

highpackage: openssh-serversource: opensshscore: 106reports: 1similarity: 99%

Why this looks related: same classification, same package, same source package, same subsystem, same target, same wait site

Last seen: 2026-07-01 21:48 UTC. Public page: /issues/019f0b26-eab5-72b2-b263-744003837417. Public JSON: /v1/issues/019f0b26-eab5-72b2-b263-744003837417

Worker outcome summary

This issue has 7 recorded worker attempts. Only ready diffs and ready triage handoffs get dedicated public boards. Diagnosis-only reports and blocked attempts are summarized here so it is easier to see why work stalled.

7 failed patch attempts

No ready patch attempts, ready triage handoffs, diagnosis-only reports, explained impossible attempts, or other attempt states.

Most common blockers

  • execution (7 attempts)

Published attempts

failed patch attempt

patch

sshd-session likely remains stuck in an unclassified userspace loop. The diagnosis was captured, but the patch proposal did not complete cleanly.

state: failedcreated: 2026-05-23 12:02 UTCvalidation: failed

Why it stopped

execution

Failure details

  • Failure kind: execution
  • Exit status: 1
  • Error: {"type":"turn.started"} {"type":"error","message":"Reconnecting... 1/5 (stream disconnected before completion: Your authentication token has been invalidated. Please try signing in again.)"} {"type":"error","message":"Reconnecting... 2/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 3/5 (stream disconnected before completion: Your authentication token has been invalidated. Please try signing in again.)"} {"type":"error","message":"Reconnecting... 4/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 5/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"We're currently experiencing high demand, which may cause temporary errors."} {"type":"turn.failed","error":{"message":"We're currently experiencing high demand, which may cause temporary errors."}}

Collected context

  • Subsystem: runaway-process
  • Diagnosis family: unknown-userspace-loop
  • Hot path: pfn_to_dma_pte
  • Command: sshd-session: gis [priv]
  • Thread backtrace summary: thread backtraces show 1 thread(s) around 0x00007f9d21c9a7d2 in ?? () from target:<path>
  • Source package: openssh
  • Workspace source: debian-source
  • Workspace acquisition: Fetched Debian source package via apt-get source.
  • Homepage: https://www.openssh.com/
  • Implicated packages: linux-image-6.17.10+deb14-amd64
  • Contention signals: event-loop-wakeups, gdb-stderr: gdb: warning: Couldn't determine a path for the index cache directory.

The process is demonstrably CPU-hot, but the current syscall and symbol sample does not point to a single dominant loop family yet.

Representative threads

  • 1 thread(s): 0x00007f9d21c9a7d2 in ?? () from target:<path> -> 0x00007f9d21c9a7ed in ?? () from target:<path> -> 0x00007f9d21d0fd76 in poll () from target:<path> -> 0x0000564a1c3cff15 in ?? ()

Common frame clusters

  • 1 thread(s): 0x00007f9d21c9a7d2 in ?? () from target:<path> -> 0x00007f9d21c9a7ed in ?? () from target:<path> -> 0x00007f9d21d0fd76 in poll () from target:<path>

Raw thread backtrace

Thread 1 (Thread 0x7f9d224e5d00 (LWP 3780091) "sshd-session"):
#0  0x00007f9d21c9a7d2 in ?? () from target:<path>
#1  0x00007f9d21c9a7ed in ?? () from target:<path>
#2  0x00007f9d21d0fd76 in poll () from target:<path>
#3  0x0000564a1c3cff15 in ?? ()
#4  0x0000564a1c3d2264 in ?? ()
#5  0x0000564a1c3aad0e in ?? ()
#6  0x00007f9d21c31f77 in ?? () from target:<path>
#7  0x00007f9d21c32027 in __libc_start_main () from target:<path>
#8  0x0000564a1c3ab4c1 in ?? ()
Published session

Prompt

## Plan Pass

You are planning a fixer patch before any edits happen.

Read the evidence bundle at `./evidence.json`. The prepared workspace is `./workspace` and it was acquired via `debian-source`. The original pre-edit snapshot is available at `./source` if you need to inspect it. For interpreter processes, plan from the script/application entrypoint evidence first and include the runtime only as a second investigation target unless the evidence proves a runtime bug.

Validation expectation: try the project-level build/test entrypoint from the workspace root before reporting only a focused leaf compile. Detected candidate(s): `./configure && make`. If the project-level command fails because dependencies or generated files are missing, include the exact command and failure reason in `## Validation`, then run the narrowest relevant compile/test that is still reproducible from a clean checkout.

Upstream-style expectation: before planning or editing, check for contribution/style docs (`CONTRIBUTING`, `HACKING`, `README-hacking`, `README.md`, `docs/`, `dev-docs/`) and scan the touched subsystem for local helpers. If the project has wrappers for file IO, path-relative IO, process spawning, memory allocation, logging, locking, or platform compatibility, prefer those wrappers over generic libc/std APIs. Do not invent a reproducer or user-visible failure that is not in the evidence bundle; if the evidence is profiler-only or indirect, describe it as a targeted mitigation or stop with a diagnosis instead of presenting a speculative patch as a confirmed bug fix. In the plan and final validation, name any such helper, convention, or evidence limit you found, or say that no relevant local helper was found. Treat this as a `openssh` upstream patch, not just a Debian-local workaround. Inspect the relevant code, nearby callers, project contribution docs, and local helper/compat APIs, but do not edit files in this pass.

Return a short markdown plan with these exact sections:

## Problem
## Evidence Confidence
## Proposed Subject
## Patch Plan
## Risks
## Validation

Classify `## Evidence Confidence` as exactly one of `reproduced`, `observed`, or `inferred`. Use `inferred` only for a no-patch diagnosis/report plan unless you can name the extra evidence you will collect before editing; inferred source patches are blocked by Fixer because they are not pull-request-ready. For `observed` source-patch plans, plan to say in the final `## Issue Connection` that the failure was observed by Fixer and not independently reproduced. If the plan touches authentication, authorization, credentials, cryptography, sandboxing, permissions, or timing/throttling behavior, treat it as security-sensitive: do not plan a source patch unless validation can reproduce the behavior and analyze the security impact; otherwise plan a no-patch diagnosis/report. The plan must explain how the proposed code change addresses the observed issue evidence, call out any prior Fixer patch that should be improved or replaced, reject awkward control flow such as avoidable `goto` if there is a cleaner bounded alternative, name any local helper APIs or maintainer conventions the patch should follow, and keep the intended maintainer-facing explanation clear enough that someone unfamiliar with the local complaint wording can still follow the fix. In `## Validation`, name the reproducible configure/build/test entrypoint you will try from the workspace root before any focused leaf compile or smoke check, and include one bounded independent reproduction attempt for the collected failure signal when it is safe and cheap. Do not plan to claim `reproduced` unless that reproduction command or test can actually show the failure.

Response

## Plan Pass



## Workflow Note

{"type":"turn.started"}
{"type":"error","message":"Reconnecting... 1/5 (stream disconnected before completion: Your authentication token has been invalidated. Please try signing in again.)"}
{"type":"error","message":"Reconnecting... 2/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 3/5 (stream disconnected before completion: Your authentication token has been invalidated. Please try signing in again.)"}
{"type":"error","message":"Reconnecting... 4/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 5/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"We're currently experiencing high demand, which may cause temporary errors."}
{"type":"turn.failed","error":{"message":"We're currently experiencing high demand, which may cause temporary errors."}}

failed patch attempt

patch

sshd-session likely remains stuck in an unclassified userspace loop. The diagnosis was captured, but the patch proposal did not complete cleanly.

state: failedcreated: 2026-05-23 10:56 UTCvalidation: failed

Why it stopped

execution

Failure details

  • Failure kind: execution
  • Exit status: 1
  • Error: {"type":"turn.started"} {"type":"error","message":"Reconnecting... 1/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 2/5 (stream disconnected before completion: Your authentication token has been invalidated. Please try signing in again.)"} {"type":"error","message":"Reconnecting... 3/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 4/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 5/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"We're currently experiencing high demand, which may cause temporary errors."} {"type":"turn.failed","error":{"message":"We're currently experiencing high demand, which may cause temporary errors."}}

Collected context

  • Subsystem: runaway-process
  • Diagnosis family: unknown-userspace-loop
  • Hot path: pfn_to_dma_pte
  • Command: sshd-session: gis [priv]
  • Thread backtrace summary: thread backtraces show 1 thread(s) around 0x00007f9d21c9a7d2 in ?? () from target:<path>
  • Source package: openssh
  • Workspace source: debian-source
  • Workspace acquisition: Fetched Debian source package via apt-get source.
  • Homepage: https://www.openssh.com/
  • Implicated packages: linux-image-6.17.10+deb14-amd64
  • Contention signals: event-loop-wakeups, gdb-stderr: gdb: warning: Couldn't determine a path for the index cache directory.

The process is demonstrably CPU-hot, but the current syscall and symbol sample does not point to a single dominant loop family yet.

Representative threads

  • 1 thread(s): 0x00007f9d21c9a7d2 in ?? () from target:<path> -> 0x00007f9d21c9a7ed in ?? () from target:<path> -> 0x00007f9d21d0fd76 in poll () from target:<path> -> 0x0000564a1c3cff15 in ?? ()

Common frame clusters

  • 1 thread(s): 0x00007f9d21c9a7d2 in ?? () from target:<path> -> 0x00007f9d21c9a7ed in ?? () from target:<path> -> 0x00007f9d21d0fd76 in poll () from target:<path>

Raw thread backtrace

Thread 1 (Thread 0x7f9d224e5d00 (LWP 3780091) "sshd-session"):
#0  0x00007f9d21c9a7d2 in ?? () from target:<path>
#1  0x00007f9d21c9a7ed in ?? () from target:<path>
#2  0x00007f9d21d0fd76 in poll () from target:<path>
#3  0x0000564a1c3cff15 in ?? ()
#4  0x0000564a1c3d2264 in ?? ()
#5  0x0000564a1c3aad0e in ?? ()
#6  0x00007f9d21c31f77 in ?? () from target:<path>
#7  0x00007f9d21c32027 in __libc_start_main () from target:<path>
#8  0x0000564a1c3ab4c1 in ?? ()
Published session

Prompt

## Plan Pass

You are planning a fixer patch before any edits happen.

Read the evidence bundle at `./evidence.json`. The prepared workspace is `./workspace` and it was acquired via `debian-source`. The original pre-edit snapshot is available at `./source` if you need to inspect it. For interpreter processes, plan from the script/application entrypoint evidence first and include the runtime only as a second investigation target unless the evidence proves a runtime bug.

Validation expectation: try the project-level build/test entrypoint from the workspace root before reporting only a focused leaf compile. Detected candidate(s): `./configure && make`. If the project-level command fails because dependencies or generated files are missing, include the exact command and failure reason in `## Validation`, then run the narrowest relevant compile/test that is still reproducible from a clean checkout.

Upstream-style expectation: before planning or editing, check for contribution/style docs (`CONTRIBUTING`, `HACKING`, `README-hacking`, `README.md`, `docs/`, `dev-docs/`) and scan the touched subsystem for local helpers. If the project has wrappers for file IO, path-relative IO, process spawning, memory allocation, logging, locking, or platform compatibility, prefer those wrappers over generic libc/std APIs. Do not invent a reproducer or user-visible failure that is not in the evidence bundle; if the evidence is profiler-only or indirect, describe it as a targeted mitigation or stop with a diagnosis instead of presenting a speculative patch as a confirmed bug fix. In the plan and final validation, name any such helper, convention, or evidence limit you found, or say that no relevant local helper was found. Treat this as a `openssh` upstream patch, not just a Debian-local workaround. Inspect the relevant code, nearby callers, project contribution docs, and local helper/compat APIs, but do not edit files in this pass.

Return a short markdown plan with these exact sections:

## Problem
## Evidence Confidence
## Proposed Subject
## Patch Plan
## Risks
## Validation

Classify `## Evidence Confidence` as exactly one of `reproduced`, `observed`, or `inferred`. Use `inferred` only for a no-patch diagnosis/report plan unless you can name the extra evidence you will collect before editing; inferred source patches are blocked by Fixer because they are not pull-request-ready. For `observed` source-patch plans, plan to say in the final `## Issue Connection` that the failure was observed by Fixer and not independently reproduced. If the plan touches authentication, authorization, credentials, cryptography, sandboxing, permissions, or timing/throttling behavior, treat it as security-sensitive: do not plan a source patch unless validation can reproduce the behavior and analyze the security impact; otherwise plan a no-patch diagnosis/report. The plan must explain how the proposed code change addresses the observed issue evidence, call out any prior Fixer patch that should be improved or replaced, reject awkward control flow such as avoidable `goto` if there is a cleaner bounded alternative, name any local helper APIs or maintainer conventions the patch should follow, and keep the intended maintainer-facing explanation clear enough that someone unfamiliar with the local complaint wording can still follow the fix. In `## Validation`, name the reproducible configure/build/test entrypoint you will try from the workspace root before any focused leaf compile or smoke check, and include one bounded independent reproduction attempt for the collected failure signal when it is safe and cheap. Do not plan to claim `reproduced` unless that reproduction command or test can actually show the failure.

Response

## Plan Pass



## Workflow Note

{"type":"turn.started"}
{"type":"error","message":"Reconnecting... 1/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 2/5 (stream disconnected before completion: Your authentication token has been invalidated. Please try signing in again.)"}
{"type":"error","message":"Reconnecting... 3/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 4/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 5/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"We're currently experiencing high demand, which may cause temporary errors."}
{"type":"turn.failed","error":{"message":"We're currently experiencing high demand, which may cause temporary errors."}}

failed patch attempt

patch

sshd-session likely remains stuck in an unclassified userspace loop. The diagnosis was captured, but the patch proposal did not complete cleanly.

state: failedcreated: 2026-05-23 09:51 UTCvalidation: failed

Why it stopped

execution

Failure details

  • Failure kind: execution
  • Exit status: 1
  • Error: {"type":"turn.started"} {"type":"error","message":"Reconnecting... 1/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 2/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 3/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 4/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 5/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"We're currently experiencing high demand, which may cause temporary errors."} {"type":"turn.failed","error":{"message":"We're currently experiencing high demand, which may cause temporary errors."}}

Collected context

  • Subsystem: runaway-process
  • Diagnosis family: unknown-userspace-loop
  • Hot path: pfn_to_dma_pte
  • Command: sshd-session: gis [priv]
  • Thread backtrace summary: thread backtraces show 1 thread(s) around 0x00007f9d21c9a7d2 in ?? () from target:<path>
  • Source package: openssh
  • Workspace source: debian-source
  • Workspace acquisition: Fetched Debian source package via apt-get source.
  • Homepage: https://www.openssh.com/
  • Implicated packages: linux-image-6.17.10+deb14-amd64
  • Contention signals: event-loop-wakeups, gdb-stderr: gdb: warning: Couldn't determine a path for the index cache directory.

The process is demonstrably CPU-hot, but the current syscall and symbol sample does not point to a single dominant loop family yet.

Representative threads

  • 1 thread(s): 0x00007f9d21c9a7d2 in ?? () from target:<path> -> 0x00007f9d21c9a7ed in ?? () from target:<path> -> 0x00007f9d21d0fd76 in poll () from target:<path> -> 0x0000564a1c3cff15 in ?? ()

Common frame clusters

  • 1 thread(s): 0x00007f9d21c9a7d2 in ?? () from target:<path> -> 0x00007f9d21c9a7ed in ?? () from target:<path> -> 0x00007f9d21d0fd76 in poll () from target:<path>

Raw thread backtrace

Thread 1 (Thread 0x7f9d224e5d00 (LWP 3780091) "sshd-session"):
#0  0x00007f9d21c9a7d2 in ?? () from target:<path>
#1  0x00007f9d21c9a7ed in ?? () from target:<path>
#2  0x00007f9d21d0fd76 in poll () from target:<path>
#3  0x0000564a1c3cff15 in ?? ()
#4  0x0000564a1c3d2264 in ?? ()
#5  0x0000564a1c3aad0e in ?? ()
#6  0x00007f9d21c31f77 in ?? () from target:<path>
#7  0x00007f9d21c32027 in __libc_start_main () from target:<path>
#8  0x0000564a1c3ab4c1 in ?? ()
Published session

Prompt

## Plan Pass

You are planning a fixer patch before any edits happen.

Read the evidence bundle at `./evidence.json`. The prepared workspace is `./workspace` and it was acquired via `debian-source`. The original pre-edit snapshot is available at `./source` if you need to inspect it. For interpreter processes, plan from the script/application entrypoint evidence first and include the runtime only as a second investigation target unless the evidence proves a runtime bug.

Validation expectation: try the project-level build/test entrypoint from the workspace root before reporting only a focused leaf compile. Detected candidate(s): `./configure && make`. If the project-level command fails because dependencies or generated files are missing, include the exact command and failure reason in `## Validation`, then run the narrowest relevant compile/test that is still reproducible from a clean checkout.

Upstream-style expectation: before planning or editing, check for contribution/style docs (`CONTRIBUTING`, `HACKING`, `README-hacking`, `README.md`, `docs/`, `dev-docs/`) and scan the touched subsystem for local helpers. If the project has wrappers for file IO, path-relative IO, process spawning, memory allocation, logging, locking, or platform compatibility, prefer those wrappers over generic libc/std APIs. Do not invent a reproducer or user-visible failure that is not in the evidence bundle; if the evidence is profiler-only or indirect, describe it as a targeted mitigation or stop with a diagnosis instead of presenting a speculative patch as a confirmed bug fix. In the plan and final validation, name any such helper, convention, or evidence limit you found, or say that no relevant local helper was found. Treat this as a `openssh` upstream patch, not just a Debian-local workaround. Inspect the relevant code, nearby callers, project contribution docs, and local helper/compat APIs, but do not edit files in this pass.

Return a short markdown plan with these exact sections:

## Problem
## Evidence Confidence
## Proposed Subject
## Patch Plan
## Risks
## Validation

Classify `## Evidence Confidence` as exactly one of `reproduced`, `observed`, or `inferred`. Use `inferred` only for a no-patch diagnosis/report plan unless you can name the extra evidence you will collect before editing; inferred source patches are blocked by Fixer because they are not pull-request-ready. For `observed` source-patch plans, plan to say in the final `## Issue Connection` that the failure was observed by Fixer and not independently reproduced. If the plan touches authentication, authorization, credentials, cryptography, sandboxing, permissions, or timing/throttling behavior, treat it as security-sensitive: do not plan a source patch unless validation can reproduce the behavior and analyze the security impact; otherwise plan a no-patch diagnosis/report. The plan must explain how the proposed code change addresses the observed issue evidence, call out any prior Fixer patch that should be improved or replaced, reject awkward control flow such as avoidable `goto` if there is a cleaner bounded alternative, name any local helper APIs or maintainer conventions the patch should follow, and keep the intended maintainer-facing explanation clear enough that someone unfamiliar with the local complaint wording can still follow the fix. In `## Validation`, name the reproducible configure/build/test entrypoint you will try from the workspace root before any focused leaf compile or smoke check, and include one bounded independent reproduction attempt for the collected failure signal when it is safe and cheap. Do not plan to claim `reproduced` unless that reproduction command or test can actually show the failure.

Response

## Plan Pass



## Workflow Note

{"type":"turn.started"}
{"type":"error","message":"Reconnecting... 1/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 2/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 3/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 4/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 5/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"We're currently experiencing high demand, which may cause temporary errors."}
{"type":"turn.failed","error":{"message":"We're currently experiencing high demand, which may cause temporary errors."}}

failed patch attempt

patch

sshd-session likely remains stuck in an unclassified userspace loop. The diagnosis was captured, but the patch proposal did not complete cleanly.

state: failedcreated: 2026-05-23 08:50 UTCvalidation: failed

Why it stopped

execution

Failure details

  • Failure kind: execution
  • Exit status: 1
  • Error: {"type":"turn.started"} {"type":"error","message":"Reconnecting... 1/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 2/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 3/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 4/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 5/5 (stream disconnected before completion: Your authentication token has been invalidated. Please try signing in again.)"} {"type":"error","message":"We're currently experiencing high demand, which may cause temporary errors."} {"type":"turn.failed","error":{"message":"We're currently experiencing high demand, which may cause temporary errors."}}

Collected context

  • Subsystem: runaway-process
  • Diagnosis family: unknown-userspace-loop
  • Hot path: pfn_to_dma_pte
  • Command: sshd-session: gis [priv]
  • Thread backtrace summary: thread backtraces show 1 thread(s) around 0x00007f9d21c9a7d2 in ?? () from target:<path>
  • Source package: openssh
  • Workspace source: debian-source
  • Workspace acquisition: Fetched Debian source package via apt-get source.
  • Homepage: https://www.openssh.com/
  • Implicated packages: linux-image-6.17.10+deb14-amd64
  • Contention signals: event-loop-wakeups, gdb-stderr: gdb: warning: Couldn't determine a path for the index cache directory.

The process is demonstrably CPU-hot, but the current syscall and symbol sample does not point to a single dominant loop family yet.

Representative threads

  • 1 thread(s): 0x00007f9d21c9a7d2 in ?? () from target:<path> -> 0x00007f9d21c9a7ed in ?? () from target:<path> -> 0x00007f9d21d0fd76 in poll () from target:<path> -> 0x0000564a1c3cff15 in ?? ()

Common frame clusters

  • 1 thread(s): 0x00007f9d21c9a7d2 in ?? () from target:<path> -> 0x00007f9d21c9a7ed in ?? () from target:<path> -> 0x00007f9d21d0fd76 in poll () from target:<path>

Raw thread backtrace

Thread 1 (Thread 0x7f9d224e5d00 (LWP 3780091) "sshd-session"):
#0  0x00007f9d21c9a7d2 in ?? () from target:<path>
#1  0x00007f9d21c9a7ed in ?? () from target:<path>
#2  0x00007f9d21d0fd76 in poll () from target:<path>
#3  0x0000564a1c3cff15 in ?? ()
#4  0x0000564a1c3d2264 in ?? ()
#5  0x0000564a1c3aad0e in ?? ()
#6  0x00007f9d21c31f77 in ?? () from target:<path>
#7  0x00007f9d21c32027 in __libc_start_main () from target:<path>
#8  0x0000564a1c3ab4c1 in ?? ()
Published session

Prompt

## Plan Pass

You are planning a fixer patch before any edits happen.

Read the evidence bundle at `./evidence.json`. The prepared workspace is `./workspace` and it was acquired via `debian-source`. The original pre-edit snapshot is available at `./source` if you need to inspect it. For interpreter processes, plan from the script/application entrypoint evidence first and include the runtime only as a second investigation target unless the evidence proves a runtime bug.

Validation expectation: try the project-level build/test entrypoint from the workspace root before reporting only a focused leaf compile. Detected candidate(s): `./configure && make`. If the project-level command fails because dependencies or generated files are missing, include the exact command and failure reason in `## Validation`, then run the narrowest relevant compile/test that is still reproducible from a clean checkout.

Upstream-style expectation: before planning or editing, check for contribution/style docs (`CONTRIBUTING`, `HACKING`, `README-hacking`, `README.md`, `docs/`, `dev-docs/`) and scan the touched subsystem for local helpers. If the project has wrappers for file IO, path-relative IO, process spawning, memory allocation, logging, locking, or platform compatibility, prefer those wrappers over generic libc/std APIs. Do not invent a reproducer or user-visible failure that is not in the evidence bundle; if the evidence is profiler-only or indirect, describe it as a targeted mitigation or stop with a diagnosis instead of presenting a speculative patch as a confirmed bug fix. In the plan and final validation, name any such helper, convention, or evidence limit you found, or say that no relevant local helper was found. Treat this as a `openssh` upstream patch, not just a Debian-local workaround. Inspect the relevant code, nearby callers, project contribution docs, and local helper/compat APIs, but do not edit files in this pass.

Return a short markdown plan with these exact sections:

## Problem
## Evidence Confidence
## Proposed Subject
## Patch Plan
## Risks
## Validation

Classify `## Evidence Confidence` as exactly one of `reproduced`, `observed`, or `inferred`. Use `inferred` only for a no-patch diagnosis/report plan unless you can name the extra evidence you will collect before editing; inferred source patches are blocked by Fixer because they are not pull-request-ready. For `observed` source-patch plans, plan to say in the final `## Issue Connection` that the failure was observed by Fixer and not independently reproduced. If the plan touches authentication, authorization, credentials, cryptography, sandboxing, permissions, or timing/throttling behavior, treat it as security-sensitive: do not plan a source patch unless validation can reproduce the behavior and analyze the security impact; otherwise plan a no-patch diagnosis/report. The plan must explain how the proposed code change addresses the observed issue evidence, call out any prior Fixer patch that should be improved or replaced, reject awkward control flow such as avoidable `goto` if there is a cleaner bounded alternative, name any local helper APIs or maintainer conventions the patch should follow, and keep the intended maintainer-facing explanation clear enough that someone unfamiliar with the local complaint wording can still follow the fix. In `## Validation`, name the reproducible configure/build/test entrypoint you will try from the workspace root before any focused leaf compile or smoke check, and include one bounded independent reproduction attempt for the collected failure signal when it is safe and cheap. Do not plan to claim `reproduced` unless that reproduction command or test can actually show the failure.

Response

## Plan Pass



## Workflow Note

{"type":"turn.started"}
{"type":"error","message":"Reconnecting... 1/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 2/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 3/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 4/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 5/5 (stream disconnected before completion: Your authentication token has been invalidated. Please try signing in again.)"}
{"type":"error","message":"We're currently experiencing high demand, which may cause temporary errors."}
{"type":"turn.failed","error":{"message":"We're currently experiencing high demand, which may cause temporary errors."}}

failed patch attempt

patch

sshd-session likely remains stuck in an unclassified userspace loop. The diagnosis was captured, but the patch proposal did not complete cleanly.

state: failedcreated: 2026-05-23 07:44 UTCvalidation: failed

Why it stopped

execution

Failure details

  • Failure kind: execution
  • Exit status: 1
  • Error: {"type":"turn.started"} {"type":"error","message":"Reconnecting... 1/5 (stream disconnected before completion: Your authentication token has been invalidated. Please try signing in again.)"} {"type":"error","message":"Reconnecting... 2/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 3/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 4/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 5/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"We're currently experiencing high demand, which may cause temporary errors."} {"type":"turn.failed","error":{"message":"We're currently experiencing high demand, which may cause temporary errors."}}

Collected context

  • Subsystem: runaway-process
  • Diagnosis family: unknown-userspace-loop
  • Hot path: pfn_to_dma_pte
  • Command: sshd-session: gis [priv]
  • Thread backtrace summary: thread backtraces show 1 thread(s) around 0x00007f9d21c9a7d2 in ?? () from target:<path>
  • Source package: openssh
  • Workspace source: debian-source
  • Workspace acquisition: Fetched Debian source package via apt-get source.
  • Homepage: https://www.openssh.com/
  • Implicated packages: linux-image-6.17.10+deb14-amd64
  • Contention signals: event-loop-wakeups, gdb-stderr: gdb: warning: Couldn't determine a path for the index cache directory.

The process is demonstrably CPU-hot, but the current syscall and symbol sample does not point to a single dominant loop family yet.

Representative threads

  • 1 thread(s): 0x00007f9d21c9a7d2 in ?? () from target:<path> -> 0x00007f9d21c9a7ed in ?? () from target:<path> -> 0x00007f9d21d0fd76 in poll () from target:<path> -> 0x0000564a1c3cff15 in ?? ()

Common frame clusters

  • 1 thread(s): 0x00007f9d21c9a7d2 in ?? () from target:<path> -> 0x00007f9d21c9a7ed in ?? () from target:<path> -> 0x00007f9d21d0fd76 in poll () from target:<path>

Raw thread backtrace

Thread 1 (Thread 0x7f9d224e5d00 (LWP 3780091) "sshd-session"):
#0  0x00007f9d21c9a7d2 in ?? () from target:<path>
#1  0x00007f9d21c9a7ed in ?? () from target:<path>
#2  0x00007f9d21d0fd76 in poll () from target:<path>
#3  0x0000564a1c3cff15 in ?? ()
#4  0x0000564a1c3d2264 in ?? ()
#5  0x0000564a1c3aad0e in ?? ()
#6  0x00007f9d21c31f77 in ?? () from target:<path>
#7  0x00007f9d21c32027 in __libc_start_main () from target:<path>
#8  0x0000564a1c3ab4c1 in ?? ()
Published session

Prompt

## Plan Pass

You are planning a fixer patch before any edits happen.

Read the evidence bundle at `./evidence.json`. The prepared workspace is `./workspace` and it was acquired via `debian-source`. The original pre-edit snapshot is available at `./source` if you need to inspect it. For interpreter processes, plan from the script/application entrypoint evidence first and include the runtime only as a second investigation target unless the evidence proves a runtime bug.

Validation expectation: try the project-level build/test entrypoint from the workspace root before reporting only a focused leaf compile. Detected candidate(s): `./configure && make`. If the project-level command fails because dependencies or generated files are missing, include the exact command and failure reason in `## Validation`, then run the narrowest relevant compile/test that is still reproducible from a clean checkout.

Upstream-style expectation: before planning or editing, check for contribution/style docs (`CONTRIBUTING`, `HACKING`, `README-hacking`, `README.md`, `docs/`, `dev-docs/`) and scan the touched subsystem for local helpers. If the project has wrappers for file IO, path-relative IO, process spawning, memory allocation, logging, locking, or platform compatibility, prefer those wrappers over generic libc/std APIs. Do not invent a reproducer or user-visible failure that is not in the evidence bundle; if the evidence is profiler-only or indirect, describe it as a targeted mitigation or stop with a diagnosis instead of presenting a speculative patch as a confirmed bug fix. In the plan and final validation, name any such helper, convention, or evidence limit you found, or say that no relevant local helper was found. Treat this as a `openssh` upstream patch, not just a Debian-local workaround. Inspect the relevant code, nearby callers, project contribution docs, and local helper/compat APIs, but do not edit files in this pass.

Return a short markdown plan with these exact sections:

## Problem
## Evidence Confidence
## Proposed Subject
## Patch Plan
## Risks
## Validation

Classify `## Evidence Confidence` as exactly one of `reproduced`, `observed`, or `inferred`. Use `inferred` only for a no-patch diagnosis/report plan unless you can name the extra evidence you will collect before editing; inferred source patches are blocked by Fixer because they are not pull-request-ready. For `observed` source-patch plans, plan to say in the final `## Issue Connection` that the failure was observed by Fixer and not independently reproduced. If the plan touches authentication, authorization, credentials, cryptography, sandboxing, permissions, or timing/throttling behavior, treat it as security-sensitive: do not plan a source patch unless validation can reproduce the behavior and analyze the security impact; otherwise plan a no-patch diagnosis/report. The plan must explain how the proposed code change addresses the observed issue evidence, call out any prior Fixer patch that should be improved or replaced, reject awkward control flow such as avoidable `goto` if there is a cleaner bounded alternative, name any local helper APIs or maintainer conventions the patch should follow, and keep the intended maintainer-facing explanation clear enough that someone unfamiliar with the local complaint wording can still follow the fix. In `## Validation`, name the reproducible configure/build/test entrypoint you will try from the workspace root before any focused leaf compile or smoke check, and include one bounded independent reproduction attempt for the collected failure signal when it is safe and cheap. Do not plan to claim `reproduced` unless that reproduction command or test can actually show the failure.

Response

## Plan Pass



## Workflow Note

{"type":"turn.started"}
{"type":"error","message":"Reconnecting... 1/5 (stream disconnected before completion: Your authentication token has been invalidated. Please try signing in again.)"}
{"type":"error","message":"Reconnecting... 2/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 3/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 4/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 5/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"We're currently experiencing high demand, which may cause temporary errors."}
{"type":"turn.failed","error":{"message":"We're currently experiencing high demand, which may cause temporary errors."}}

failed patch attempt

patch

sshd-session likely remains stuck in an unclassified userspace loop. The diagnosis was captured, but the patch proposal did not complete cleanly.

state: failedcreated: 2026-05-23 06:41 UTCvalidation: failed

Why it stopped

execution

Failure details

  • Failure kind: execution
  • Exit status: 1
  • Error: {"type":"turn.started"} {"type":"error","message":"Reconnecting... 1/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 2/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 3/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 4/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 5/5 (stream disconnected before completion: Your authentication token has been invalidated. Please try signing in again.)"} {"type":"error","message":"We're currently experiencing high demand, which may cause temporary errors."} {"type":"turn.failed","error":{"message":"We're currently experiencing high demand, which may cause temporary errors."}}

Collected context

  • Subsystem: runaway-process
  • Diagnosis family: unknown-userspace-loop
  • Hot path: pfn_to_dma_pte
  • Command: sshd-session: gis [priv]
  • Thread backtrace summary: thread backtraces show 1 thread(s) around 0x00007f9d21c9a7d2 in ?? () from target:<path>
  • Source package: openssh
  • Workspace source: debian-source
  • Workspace acquisition: Fetched Debian source package via apt-get source.
  • Homepage: https://www.openssh.com/
  • Implicated packages: linux-image-6.17.10+deb14-amd64
  • Contention signals: event-loop-wakeups, gdb-stderr: gdb: warning: Couldn't determine a path for the index cache directory.

The process is demonstrably CPU-hot, but the current syscall and symbol sample does not point to a single dominant loop family yet.

Representative threads

  • 1 thread(s): 0x00007f9d21c9a7d2 in ?? () from target:<path> -> 0x00007f9d21c9a7ed in ?? () from target:<path> -> 0x00007f9d21d0fd76 in poll () from target:<path> -> 0x0000564a1c3cff15 in ?? ()

Common frame clusters

  • 1 thread(s): 0x00007f9d21c9a7d2 in ?? () from target:<path> -> 0x00007f9d21c9a7ed in ?? () from target:<path> -> 0x00007f9d21d0fd76 in poll () from target:<path>

Raw thread backtrace

Thread 1 (Thread 0x7f9d224e5d00 (LWP 3780091) "sshd-session"):
#0  0x00007f9d21c9a7d2 in ?? () from target:<path>
#1  0x00007f9d21c9a7ed in ?? () from target:<path>
#2  0x00007f9d21d0fd76 in poll () from target:<path>
#3  0x0000564a1c3cff15 in ?? ()
#4  0x0000564a1c3d2264 in ?? ()
#5  0x0000564a1c3aad0e in ?? ()
#6  0x00007f9d21c31f77 in ?? () from target:<path>
#7  0x00007f9d21c32027 in __libc_start_main () from target:<path>
#8  0x0000564a1c3ab4c1 in ?? ()
Published session

Prompt

## Plan Pass

You are planning a fixer patch before any edits happen.

Read the evidence bundle at `./evidence.json`. The prepared workspace is `./workspace` and it was acquired via `debian-source`. The original pre-edit snapshot is available at `./source` if you need to inspect it. For interpreter processes, plan from the script/application entrypoint evidence first and include the runtime only as a second investigation target unless the evidence proves a runtime bug.

Validation expectation: try the project-level build/test entrypoint from the workspace root before reporting only a focused leaf compile. Detected candidate(s): `./configure && make`. If the project-level command fails because dependencies or generated files are missing, include the exact command and failure reason in `## Validation`, then run the narrowest relevant compile/test that is still reproducible from a clean checkout.

Upstream-style expectation: before planning or editing, check for contribution/style docs (`CONTRIBUTING`, `HACKING`, `README-hacking`, `README.md`, `docs/`, `dev-docs/`) and scan the touched subsystem for local helpers. If the project has wrappers for file IO, path-relative IO, process spawning, memory allocation, logging, locking, or platform compatibility, prefer those wrappers over generic libc/std APIs. Do not invent a reproducer or user-visible failure that is not in the evidence bundle; if the evidence is profiler-only or indirect, describe it as a targeted mitigation or stop with a diagnosis instead of presenting a speculative patch as a confirmed bug fix. In the plan and final validation, name any such helper, convention, or evidence limit you found, or say that no relevant local helper was found. Treat this as a `openssh` upstream patch, not just a Debian-local workaround. Inspect the relevant code, nearby callers, project contribution docs, and local helper/compat APIs, but do not edit files in this pass.

Return a short markdown plan with these exact sections:

## Problem
## Evidence Confidence
## Proposed Subject
## Patch Plan
## Risks
## Validation

Classify `## Evidence Confidence` as exactly one of `reproduced`, `observed`, or `inferred`. Use `inferred` only for a no-patch diagnosis/report plan unless you can name the extra evidence you will collect before editing; inferred source patches are blocked by Fixer because they are not pull-request-ready. For `observed` source-patch plans, plan to say in the final `## Issue Connection` that the failure was observed by Fixer and not independently reproduced. If the plan touches authentication, authorization, credentials, cryptography, sandboxing, permissions, or timing/throttling behavior, treat it as security-sensitive: do not plan a source patch unless validation can reproduce the behavior and analyze the security impact; otherwise plan a no-patch diagnosis/report. The plan must explain how the proposed code change addresses the observed issue evidence, call out any prior Fixer patch that should be improved or replaced, reject awkward control flow such as avoidable `goto` if there is a cleaner bounded alternative, name any local helper APIs or maintainer conventions the patch should follow, and keep the intended maintainer-facing explanation clear enough that someone unfamiliar with the local complaint wording can still follow the fix. In `## Validation`, name the reproducible configure/build/test entrypoint you will try from the workspace root before any focused leaf compile or smoke check, and include one bounded independent reproduction attempt for the collected failure signal when it is safe and cheap. Do not plan to claim `reproduced` unless that reproduction command or test can actually show the failure.

Response

## Plan Pass



## Workflow Note

{"type":"turn.started"}
{"type":"error","message":"Reconnecting... 1/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 2/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 3/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 4/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 5/5 (stream disconnected before completion: Your authentication token has been invalidated. Please try signing in again.)"}
{"type":"error","message":"We're currently experiencing high demand, which may cause temporary errors."}
{"type":"turn.failed","error":{"message":"We're currently experiencing high demand, which may cause temporary errors."}}

failed patch attempt

patch

sshd-session likely remains stuck in an unclassified userspace loop. The diagnosis was captured, but the patch proposal did not complete cleanly.

state: failedcreated: 2026-05-23 05:39 UTCvalidation: failed

Why it stopped

execution

Failure details

  • Failure kind: execution
  • Exit status: 1
  • Error: {"type":"turn.started"} {"type":"error","message":"Reconnecting... 1/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 2/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 3/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 4/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"Reconnecting... 5/5 (We're currently experiencing high demand, which may cause temporary errors.)"} {"type":"error","message":"We're currently experiencing high demand, which may cause temporary errors."} {"type":"turn.failed","error":{"message":"We're currently experiencing high demand, which may cause temporary errors."}}

Collected context

  • Subsystem: runaway-process
  • Diagnosis family: unknown-userspace-loop
  • Hot path: pfn_to_dma_pte
  • Command: sshd-session: gis [priv]
  • Thread backtrace summary: thread backtraces show 1 thread(s) around 0x00007f9d21c9a7d2 in ?? () from target:<path>
  • Source package: openssh
  • Workspace source: debian-source
  • Workspace acquisition: Fetched Debian source package via apt-get source.
  • Homepage: https://www.openssh.com/
  • Implicated packages: linux-image-6.17.10+deb14-amd64
  • Contention signals: event-loop-wakeups, gdb-stderr: gdb: warning: Couldn't determine a path for the index cache directory.

The process is demonstrably CPU-hot, but the current syscall and symbol sample does not point to a single dominant loop family yet.

Representative threads

  • 1 thread(s): 0x00007f9d21c9a7d2 in ?? () from target:<path> -> 0x00007f9d21c9a7ed in ?? () from target:<path> -> 0x00007f9d21d0fd76 in poll () from target:<path> -> 0x0000564a1c3cff15 in ?? ()

Common frame clusters

  • 1 thread(s): 0x00007f9d21c9a7d2 in ?? () from target:<path> -> 0x00007f9d21c9a7ed in ?? () from target:<path> -> 0x00007f9d21d0fd76 in poll () from target:<path>

Raw thread backtrace

Thread 1 (Thread 0x7f9d224e5d00 (LWP 3780091) "sshd-session"):
#0  0x00007f9d21c9a7d2 in ?? () from target:<path>
#1  0x00007f9d21c9a7ed in ?? () from target:<path>
#2  0x00007f9d21d0fd76 in poll () from target:<path>
#3  0x0000564a1c3cff15 in ?? ()
#4  0x0000564a1c3d2264 in ?? ()
#5  0x0000564a1c3aad0e in ?? ()
#6  0x00007f9d21c31f77 in ?? () from target:<path>
#7  0x00007f9d21c32027 in __libc_start_main () from target:<path>
#8  0x0000564a1c3ab4c1 in ?? ()
Published session

Prompt

## Plan Pass

You are planning a fixer patch before any edits happen.

Read the evidence bundle at `./evidence.json`. The prepared workspace is `./workspace` and it was acquired via `debian-source`. The original pre-edit snapshot is available at `./source` if you need to inspect it. For interpreter processes, plan from the script/application entrypoint evidence first and include the runtime only as a second investigation target unless the evidence proves a runtime bug.

Validation expectation: try the project-level build/test entrypoint from the workspace root before reporting only a focused leaf compile. Detected candidate(s): `./configure && make`. If the project-level command fails because dependencies or generated files are missing, include the exact command and failure reason in `## Validation`, then run the narrowest relevant compile/test that is still reproducible from a clean checkout.

Upstream-style expectation: before planning or editing, check for contribution/style docs (`CONTRIBUTING`, `HACKING`, `README-hacking`, `README.md`, `docs/`, `dev-docs/`) and scan the touched subsystem for local helpers. If the project has wrappers for file IO, path-relative IO, process spawning, memory allocation, logging, locking, or platform compatibility, prefer those wrappers over generic libc/std APIs. Do not invent a reproducer or user-visible failure that is not in the evidence bundle; if the evidence is profiler-only or indirect, describe it as a targeted mitigation or stop with a diagnosis instead of presenting a speculative patch as a confirmed bug fix. In the plan and final validation, name any such helper, convention, or evidence limit you found, or say that no relevant local helper was found. Treat this as a `openssh` upstream patch, not just a Debian-local workaround. Inspect the relevant code, nearby callers, project contribution docs, and local helper/compat APIs, but do not edit files in this pass.

Return a short markdown plan with these exact sections:

## Problem
## Evidence Confidence
## Proposed Subject
## Patch Plan
## Risks
## Validation

Classify `## Evidence Confidence` as exactly one of `reproduced`, `observed`, or `inferred`. Use `inferred` only for a no-patch diagnosis/report plan unless you can name the extra evidence you will collect before editing; inferred source patches are blocked by Fixer because they are not pull-request-ready. For `observed` source-patch plans, plan to say in the final `## Issue Connection` that the failure was observed by Fixer and not independently reproduced. If the plan touches authentication, authorization, credentials, cryptography, sandboxing, permissions, or timing/throttling behavior, treat it as security-sensitive: do not plan a source patch unless validation can reproduce the behavior and analyze the security impact; otherwise plan a no-patch diagnosis/report. The plan must explain how the proposed code change addresses the observed issue evidence, call out any prior Fixer patch that should be improved or replaced, reject awkward control flow such as avoidable `goto` if there is a cleaner bounded alternative, name any local helper APIs or maintainer conventions the patch should follow, and keep the intended maintainer-facing explanation clear enough that someone unfamiliar with the local complaint wording can still follow the fix. In `## Validation`, name the reproducible configure/build/test entrypoint you will try from the workspace root before any focused leaf compile or smoke check, and include one bounded independent reproduction attempt for the collected failure signal when it is safe and cheap. Do not plan to claim `reproduced` unless that reproduction command or test can actually show the failure.

Response

## Plan Pass



## Workflow Note

{"type":"turn.started"}
{"type":"error","message":"Reconnecting... 1/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 2/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 3/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 4/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"Reconnecting... 5/5 (We're currently experiencing high demand, which may cause temporary errors.)"}
{"type":"error","message":"We're currently experiencing high demand, which may cause temporary errors."}
{"type":"turn.failed","error":{"message":"We're currently experiencing high demand, which may cause temporary errors."}}