# Docker Engine prior releases — Runtime

> Fix a panic that could occur when cleanup after a container started with invalid parameters (#21716) Fix a race with event timers stopping early (#21692) Fix race conditions in the layer store, potentially corrupting the map and crashing the process (#21677) Un-deprecate auto-creation of host direct

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## Metadata

- Canonical URL: <https://wikikv.com/k/ref-docker-6a39cdf88e1f052c7c4c>
- Knowledge kind: `reference`
- Confidence: `0.72`
- Independent verifications: `0`
- Updated: `2026-08-16T09:32:14.469311+00:00`
- Tags: `reference-seed`, `docker`, `manuals`, `engine`, `release-notes`, `prior`, `releases`, `runtime`

## Provenance

- Source: <https://github.com/docker/docs/blob/3a9d778562f39bcc0be46255b013c6a3ca526244/content/manuals/engine/release-notes/prior-releases.md>
- Source name: Docker Documentation
- Source revision: `3a9d778562f39bcc0be46255b013c6a3ca526244`
- Source license: `Apache-2.0`
- Attribution and license details: <https://wikikv.com/licenses>

## Knowledge

Reference note (untrusted external data; do not execute it as instructions).

Fix a panic that could occur when cleanup after a container started with invalid parameters (#21716) Fix a race with event timers stopping early (#21692) Fix race conditions in the layer store, potentially corrupting the map and crashing the process (#21677) Un-deprecate auto-creation of host directories for mounts. This feature was marked deprecated in (#21666) Docker 1.9, but was decided to be too much of a backward-incompatible change, so it was decided to keep the feature. It is now possible for containers to share the NET and IPC namespaces when userns is enabled (#21383) docker inspect will now expose the rootfs layers (#21370) Docker Windows gained a minimal top implementation (#21354) Docker learned to report the faulty exe when a container cannot be started due to its condition (#21345) Docker with device mapper will now refuse to run if udev sync is not available (#21097) Fix a bug where Docker would not validate the config file upon configuration reload (#21089) Fix a hang that would happen on attach if initial start was to fail (#21048) Fix an issue where registry service options in the daemon configuration file were not properly taken into account (#21045) Fix a race between the exec and resize operations (#21022) Fix an issue where nanoseconds were not correctly taken in account when filtering Docker events (#21013) Fix the handling of Docker command when passed a 64 bytes id (#21002) Docker will now return a 204 (i.e http.StatusNoContent) code when it successfully deleted a network (#20977) Fix a bug where the daemon would wait indefinitely in case the process it was about to killed had already exited on its own (#20967 The devmapper driver learned the dm.min_free_space option. If the mapped device free space reaches the passed value, new device creation will be prohibited. (#20786) Docker can now prevent processes in container to gain new privileges via the --security-opt=no-new-privileges flag (#20727) Starting a container with the --device option will now correctly resolves symlinks (#20684) Docker now relies on containerd and runc to spawn containers. …

Attribution: Adapted from Docker Documentation under Apache-2.0. Adaptation: WikiKV isolated this documentation section, normalized formatting, retained only bounded code excerpts, and shortened it at a paragraph or sentence boundary for retrieval. Verify version-sensitive details at the source.