Issues

• rmw_serialize reports the size estimate as the serialized length for non-CPU buffers

  ros2/rmw_fastrtps#963 · Filter by author mini-1235 opened on Oct 26, 2026

• Buffer backends receive the accelerated channel's GID instead of the publisher's

  ros2/rmw_fastrtps#961 · Filter by author mini-1235 opened on Oct 26, 2026

• Buffer-aware subscribers can be missed during initialization

  bug
  ros2/rmw_fastrtps#959 · Filter by author ObeliskGate opened on Oct 24, 2026

• Buffer-aware publish returns RMW_RET_OK when the channel write fails

  ros2/rmw_fastrtps#957 · Filter by author mini-1235 opened on Oct 22, 2026

• rmw_take_with_info crashes on null arguments for buffer-aware message types

  ros2/rmw_fastrtps#954 · Filter by author mini-1235 opened on Oct 20, 2026

• wait_for_all_acked returns true for buffer-aware types before the messages are acknowledged

  ros2/rmw_fastrtps#952 · Filter by author mini-1235 opened on Oct 19, 2026

• EventsCBGExecutor does not execute queued messages of buffer-aware types with rmw_fastrtps_cpp

  ros2/rmw_fastrtps#950 · Filter by author mini-1235 opened on Oct 19, 2026

• Deadline and liveliness QoS events are not reported for buffer-aware message types

  ros2/rmw_fastrtps#948 · Filter by author mini-1235 opened on Oct 17, 2026

• Internal buffer channel topics appear in the ROS graph

  ros2/rmw_fastrtps#947 · Filter by author mini-1235 opened on Oct 16, 2026
  1

• Participant-pair-specific matching failure: SEDP endpoint registration healthy, yet one reader↔writer pair never matches in either direction (get_publisher_count()=0 on the reader, reader absent from writer's get_subscription_count()); in-process reader re-creation does not recover [Fast DDS 2.14.6 / rmw_fastrtps 8.4.3 / Jazzy / rclpy]

  ros2/rmw_fastrtps#941 · Filter by author kseczhouyb opened on Oct 15, 2026

• rmw_deserialize segfaults on a header-only (truncated) CDR buffer instead of returning an error (Jazzy)

  ros2/rmw_fastrtps#940 · Filter by author JacobAAnderson opened on Oct 14, 2026

• A subscriber that leaves stays in the buffer-aware list, so a later legacy subscriber receives nothing

  ros2/rmw_fastrtps#939 · Filter by author YuanYuYuan opened on Oct 14, 2026

• "Failed to delete participant" when an accelerated subscription is destroyed before a same-process publisher

  bug
  ros2/rmw_fastrtps#937 · Filter by author mini-1235 opened on Oct 13, 2026

• Long running ROS stacks reaching deadlock with shared memory

  bug
  ros2/rmw_fastrtps#908 · Filter by author michaelcarlstrom-civrobotics opened on Aug 31, 2026
  3

  

• Lyrical: 9.4.9 changed rmw_fastrtps_shared_cpp ABI (CustomSubscriberInfo); unversioned deb deps allow a mixed 9.4.9/9.4.8 install that crashes all clients

  ros2/rmw_fastrtps#905 · Filter by author christomaszewski opened on Aug 12, 2026
  3

• NotEnoughMemoryException crash at node init when RMW_FASTRTPS_USE_QOS_FROM_XML=1 with data_sharing AUTOMATIC (Humble / FastDDS 2.6.x)

  ros2/rmw_fastrtps#878 · Filter by author jameszhangpr opened on Apr 23, 2026
  2

• data_sharing: ON

  more-information-needed
  ros2/rmw_fastrtps#864 · Filter by author iceriver97 opened on Jan 23, 2026
  2

• fastdds monitor

  ros2/rmw_fastrtps#861 · Filter by author iceriver97 opened on Dec 12, 2025
  1

  

• Node tries to open non-existing segment

  bug
  ros2/rmw_fastrtps#860 · Filter by author heinemichael opened on Dec 4, 2025
  

• The umask setting hasn't taken effect for some files. Besides manually modifying the permissions, what should I do to grant write permissions to other users for those files that aren't affected?

  ros2/rmw_fastrtps#850 · Filter by author Damonyhk opened on Nov 10, 2025
  

• Service Response Timeout - Race Condition

  bug
  ros2/rmw_fastrtps#842 · Filter by author hilary-luo opened on Aug 12, 2025
  3

  

• Question about rmw_wait.cpp

  more-information-needed
  ros2/rmw_fastrtps#833 · Filter by author yingflower opened on Jun 26, 2025
  4

• SHMEM Transport errors: open_and_lock_file failed

  bug
  ros2/rmw_fastrtps#820 · Filter by author rty813 opened on Apr 8, 2025
  3

• When running the launch file, some nodes are randomly not activated

  ros2/rmw_fastrtps#817 · Filter by author shawrby opened on Apr 4, 2025

• FastDDS Publisher ROS2 Subscriber Topic Type Hash

  ros2/rmw_fastrtps#815 · Filter by author bshantam97 opened on Mar 17, 2025
  3