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Fix leak if client reponse is never taken #201

Merged
merged 3 commits into from
Jun 1, 2018
Merged

Fix leak if client reponse is never taken #201

merged 3 commits into from
Jun 1, 2018

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sloretz
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@sloretz sloretz commented May 15, 2018 •
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This fixes a leak exposed by the rclcpp test test_time_source. A buffer is created on the heap, but it is only freed if someone takes the response. This PR uses an std::unique_ptr instead of a raw pointer to let RAII free the buffer if an error occurs or the listener is destroyed without taking a response.

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@sloretz sloretz added the bug Something isn't working label May 15, 2018
@sloretz sloretz self-assigned this May 15, 2018
@sloretz sloretz added the in progress Actively being worked on (Kanban column) label May 15, 2018
wjwwood
wjwwood previously approved these changes May 15, 2018
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lgtm. Assuming it’s in review since you’re running ci. Otherwise ignore me :)

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sloretz commented May 15, 2018

Thanks for the review @wjwwood

The PR is complete and passes tests on my machine. I keep the in-progress label until I see green CI.

Karsten1987
Karsten1987 previously approved these changes May 15, 2018
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I have a few comments, but lgtm with green CI.

rmw_fastrtps_cpp/include/rmw_fastrtps_cpp/custom_client_info.hpp Outdated
@@ -43,7 +45,7 @@ typedef struct CustomClientInfo
typedef struct CustomClientResponse
{
eprosima::fastrtps::rtps::SampleIdentity sample_identity_;
eprosima::fastcdr::FastBuffer * buffer_;
std::unique_ptr<eprosima::fastcdr::FastBuffer> buffer_;
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why does this have to be a heap allocation in the first place?

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I hadn't thought of that. It shouldn't need to be. I just tried changing it to an instance, but I can't get around double-free errors.

That class uses raw pointers, but it does not implement a copy constructor or move constructor nor does it delete them. As a result the same pointer is freed when CustomClientResponse is removed from the list and when CustomClientResponse is destructed. I'll make an issue on the FastCDR repo.

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eProsima/Fast-CDR#19

rmw_fastrtps_cpp/include/rmw_fastrtps_cpp/custom_client_info.hpp Outdated
@@ -100,19 +102,19 @@ class ClientListener : public eprosima::fastrtps::SubscriberListener
if (conditionMutex_ != nullptr) {
std::unique_lock<std::mutex> clock(*conditionMutex_);
if (!list.empty()) {
response = list.front();
response = std::move(list.front());
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@Karsten1987 Karsten1987 May 15, 2018 •
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this move is necessary because of the unique_ptr inside the response, right? This is potentially dangerous because the list is afterwards invalid.
If you weren't calling pop_front() immediately afterwards (which you do!), and then try to access the first element of the list again, this would segfault.

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@sloretz sloretz May 15, 2018 •
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210346b

I don't see an API in the list class that combines getting the first element and removing it.
210346b uses a lambda so at least all the risky stuff is in one spot. It should be fine as long as the move constructor assignment operator doesn't throw an exception.

Karsten1987
Karsten1987 reviewed May 15, 2018
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rmw_fastrtps_cpp/include/rmw_fastrtps_cpp/custom_client_info.hpp Outdated
@@ -65,7 +62,8 @@ class ClientListener : public eprosima::fastrtps::SubscriberListener
assert(sub);

CustomClientResponse response;
response.buffer_.reset(new eprosima::fastcdr::FastBuffer());
// Todo(sloretz) eliminate heap allocation pending eprosima/Fast-CDR#19
response.buffer_.reset(new eprosima::fastcdr::FastBuffer);
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aren't there () missing?

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They're not required. It's the same as

std::string string1;
std::string string2();

I'll add them for consistency.

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57192bd

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wow. didn't know that :)
Sorry for the noise then!

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sloretz commented May 15, 2018

Checking OSX CI first to make sure warning is fixed

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sloretz commented May 16, 2018 •
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Rest of CI

  • Linux Build Status
  • Linux aarch64 Build Status
  • Windows Build Status
    • Test failures seem unrelated, trying a rebuild: Build Status

@sloretz sloretz added in review Waiting for review (Kanban column) and removed in progress Actively being worked on (Kanban column) labels May 18, 2018
@sloretz sloretz dismissed stale reviews from wjwwood and Karsten1987 May 18, 2018 16:28

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maybe I miss something here, but what are the changes compared to last time?

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sloretz commented May 31, 2018 •
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@Karsten1987 Oops, not much since your last review (57192bd). I see your comment now seemed to approve with CI, so I'll take that as an approval an re-run CI since it's been a while.

CI

  • Linux Build Status
    • New flake8 errors unrelated to this PR
  • Linux-aarch64 Build Status
    • New flake8 errors unrelated to this PR
  • macOS Build Status
    • Job died macOS Build Status
      • New flake8 errors unrelated to this PR
  • Windows Build Status
    • Job died Windows Build Status
      • New flake8 errors unrelated to this PR

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sloretz commented Jun 1, 2018

I mistakenly dismissed @Karsten1987's review. CI looks ok, merging.

@sloretz sloretz merged commit bc1ff87 into master Jun 1, 2018
@sloretz sloretz deleted the leak_custom_client_response branch June 1, 2018 16:00
@sloretz sloretz removed the in review Waiting for review (Kanban column) label Jun 1, 2018
timonegk pushed a commit to timonegk/ros-rolling-rmw-fastrtps-cpp-release that referenced this pull request May 21, 2022
@hidmic @timonegk
Import Debian changes 6.2.1-1jammy
3504c03 
ros-rolling-rmw-fastrtps-cpp (6.2.1-1jammy) jammy; urgency=high
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  * Add pub/sub init, publish and take instrumentation using tracetools (#591 <ros2/rmw_fastrtps#591>)
  * Add content filter topic feature (#513 <ros2/rmw_fastrtps#513>)
  * Add sequence numbers to message info structure (#587 <ros2/rmw_fastrtps#587>)
  * Removed some heap interactions in rmw_serialize.cpp (#590 <ros2/rmw_fastrtps#590>)
  * Contributors: Chen Lihui, Christophe Bedard, Ivan Santiago Paunovic, WideAwakeTN
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ros-rolling-rmw-fastrtps-cpp (6.2.0-1jammy) jammy; urgency=high
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  * Add EventsExecutor (#468 <ros2/rmw_fastrtps#468>)
  * Install headers to include/${PROJECT_NAME} (#578 <ros2/rmw_fastrtps#578>)
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  * Fix type size alignment. (#550 <ros2/rmw_fastrtps#550>)
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ros-rolling-rmw-fastrtps-cpp (5.2.1-1jammy) jammy; urgency=high
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ros-rolling-rmw-fastrtps-cpp (5.2.0-1jammy) jammy; urgency=high
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ros-rolling-rmw-fastrtps-cpp (5.1.0-1jammy) jammy; urgency=high
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  * Loan messages implementation (#523 <ros2/rmw_fastrtps#523>)
    * Added is_plain_ attribute to base TypeSupport.
    * Added new methods to base TypeSupport.
    * Implementation of rmw_borrow_loaned_message.
    * Implementation of rmw_return_loaned_message_from_publisher.
    * Enable loan messages on publishers of plain types.
    * Implementation for taking loaned messages.
    * Enable loan messages on subscriptions of plain types.
  * Contributors: Miguel Company
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ros-rolling-rmw-fastrtps-cpp (5.0.0-1jammy) jammy; urgency=high
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  * Unique network flows (#502 <ros2/rmw_fastrtps#502>)
  * updating quality declaration links (re: ros2/docs.ros2.org#52 <ros2/docs.ros2.org#52>) (#520 <ros2/rmw_fastrtps#520>)
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  * Capture cdr exceptions (#505 <ros2/rmw_fastrtps#505>)
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ros-rolling-rmw-fastrtps-cpp (4.3.0-1jammy) jammy; urgency=high
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  * Handle typesupport errors on fetch. (#495 <ros2/rmw_fastrtps#495>)
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ros-rolling-rmw-fastrtps-cpp (4.0.0-1jammy) jammy; urgency=high
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  * Discriminate when the Client has gone from when the Client has not completely matched (#467 <ros2/rmw_fastrtps#467>)
    * Workaround when the client is gone before server sends response
    * Change add to the map to listener callback
  * Update the package.xml files with the latest Open Robotics maintainers (#459 <ros2/rmw_fastrtps#459>)
  * Update Quality Declarations and READMEs (#455 <ros2/rmw_fastrtps#455>)
    * Add QD links for dependencies to rmw_fastrtps_cpp QD
    * Provide external dependencies QD links
    * Update rmw_fastrtps README to use Fast DDS
    * Update rmw_fastrtps_cpp QD: Fast DDS & unit test
    * Update README rmw_fastrtps_cpp to QL2
  * Contributors: JLBuenoLopez-eProsima, Jaime Martin Losa, José Luis Bueno López, Michael Jeronimo
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ros-rolling-rmw-fastrtps-cpp (3.1.4-1jammy) jammy; urgency=high
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  * Perform fault injection in all creation/destruction APIs. (#453 <ros2/rmw_fastrtps#453>)
  * Ensure rmw_destroy_node() completes despite run-time errors. (#458 <ros2/rmw_fastrtps#458>)
  * Update rmw_fastrtps_cpp and rmw_fastrtps_shared_cpp QDs to QL2. (#456 <ros2/rmw_fastrtps#456>)
  * Contributors: Michel Hidalgo
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ros-rolling-rmw-fastrtps-cpp (3.1.3-1jammy) jammy; urgency=high
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ros-rolling-rmw-fastrtps-cpp (3.1.2-1jammy) jammy; urgency=high
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  * Updated publisher/subscription allocation and wait set API return codes (#443 <ros2/rmw_fastrtps#443>)
  * Added rmw_logging tests (#442 <ros2/rmw_fastrtps#442>)
  * Contributors: Alejandro Hernández Cordero
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ros-rolling-rmw-fastrtps-cpp (3.1.1-1jammy) jammy; urgency=high
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  * Make service/client construction/destruction implementation compliant (#445 <ros2/rmw_fastrtps#445>)
  * Make sure type can be unregistered successfully (#437 <ros2/rmw_fastrtps#437>)
  * Contributors: Barry Xu, Michel Hidalgo
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ros-rolling-rmw-fastrtps-cpp (3.1.0-1jammy) jammy; urgency=high
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  * Add tests for native entity getters. (#439 <ros2/rmw_fastrtps#439>)
  * Avoid deadlock if graph update fails. (#438 <ros2/rmw_fastrtps#438>)
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ros-rolling-rmw-fastrtps-cpp (3.0.0-1jammy) jammy; urgency=high
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ros-rolling-rmw-fastrtps-cpp (2.6.0-1jammy) jammy; urgency=high
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  * Ensure compliant publisher QoS queries. (#425 <ros2/rmw_fastrtps#425>)
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ros-rolling-rmw-fastrtps-cpp (2.3.0-1jammy) jammy; urgency=high
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  * Ensure compliant publisher API. (#414 <ros2/rmw_fastrtps#414>)
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ros-rolling-rmw-fastrtps-cpp (2.2.0-1jammy) jammy; urgency=high
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  * Set context actual domain id (#410 <ros2/rmw_fastrtps#410>)
  * Contributors: Ivan Santiago Paunovic
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ros-rolling-rmw-fastrtps-cpp (2.1.0-1jammy) jammy; urgency=high
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  * Contributors: Michel Hidalgo
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ros-rolling-rmw-fastrtps-cpp (2.0.0-1jammy) jammy; urgency=high
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  * Update Quality Declarations to QL3. (#404 <ros2/rmw_fastrtps#404>)
  * Contributors: Ivan Santiago Paunovic, Michel Hidalgo
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ros-rolling-rmw-fastrtps-cpp (1.1.0-1jammy) jammy; urgency=high
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  * Update Quality Declaration to QL3. (#403 <ros2/rmw_fastrtps#403>)
  * Finalize context iff shutdown. (#396 <ros2/rmw_fastrtps#396>)
  * Make service wait for response reader (#390 <ros2/rmw_fastrtps#390>)
  * Contributors: Michel Hidalgo, Miguel Company
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ros-rolling-rmw-fastrtps-cpp (1.0.1-1jammy) jammy; urgency=high
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  * Add Security Vulnerability Policy pointing to REP-2006 (#389 <ros2/rmw_fastrtps#389>)
  * Update QDs for 1.0 (#383 <ros2/rmw_fastrtps#383>)
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ros-rolling-rmw-fastrtps-cpp (1.0.0-1jammy) jammy; urgency=high
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  * Remove API related to manual by node liveliness.  (#379 <ros2/rmw_fastrtps#379>)
  * Update quality declarations on feature testing. (#380 <ros2/rmw_fastrtps#380>)
  * Contributors: Ivan Santiago Paunovic, Michel Hidalgo
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ros-rolling-rmw-fastrtps-cpp (0.9.1-1jammy) jammy; urgency=high
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  * Add package READMEs and QUALITY_DECLARATION files (#375 <ros2/rmw_fastrtps#375>)
  * Added doxyfiles (#372 <ros2/rmw_fastrtps#372>)
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ros-rolling-rmw-fastrtps-cpp (0.9.0-1jammy) jammy; urgency=high
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  * Add missing export of rmw_dds_common. (#374 <ros2/rmw_fastrtps#374>)
  * Rename rosidl_message_bounds_t. (#373 <ros2/rmw_fastrtps#373>)
  * Feature/services timestamps. (#369 <ros2/rmw_fastrtps#369>)
  * Add support for taking a sequence of messages. (#366 <ros2/rmw_fastrtps#366>)
  * security-context -> enclave. (#365 <ros2/rmw_fastrtps#365>)
  * Rename rosidl_generator_c namespace to rosidl_runtime_c. (#367 <ros2/rmw_fastrtps#367>)
  * Remove custom typesupport for rmw_dds_common interfaces. (#364 <ros2/rmw_fastrtps#364>)
  * Added rosidl_runtime c and cpp depencencies. (#351 <ros2/rmw_fastrtps#351>)
  * Switch to one Participant per Context. (#312 <ros2/rmw_fastrtps#312>)
  * Add rmw_*_event_init() functions. (#354 <ros2/rmw_fastrtps#354>)
  * Fixing type support C/CPP mix on rmw_fastrtps_dynamic_cpp. (#350 <ros2/rmw_fastrtps#350>)
  * Fix build warning in Ubuntu Focal. (#346 <ros2/rmw_fastrtps#346>)
  * Code style only: wrap after open parenthesis if not in one line. (#347 <ros2/rmw_fastrtps#347>)
  * Passing down type support information (#342 <ros2/rmw_fastrtps#342>)
  * Implement functions to get publisher and subcription informations like QoS policies from topic name. (#336 <ros2/rmw_fastrtps#336>)
  * Contributors: Alejandro Hernández Cordero, Dirk Thomas, Ingo Lütkebohle, Ivan Santiago Paunovic, Jaison Titus, Miaofei Mei, Michael Carroll, Miguel Company, Mikael Arguedas
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ros-rolling-rmw-fastrtps-cpp (0.8.1-1jammy) jammy; urgency=high
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  * use return_loaned_message_from (#334 <ros2/rmw_fastrtps#334>)
  * Restrict traffic to localhost only if env var is provided (#331 <ros2/rmw_fastrtps#331>)
  * Zero copy api (#322 <ros2/rmw_fastrtps#322>)
  * update signature for added pub/sub options (#329 <ros2/rmw_fastrtps#329>)
  * Contributors: Brian Marchi, Karsten Knese, William Woodall
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ros-rolling-rmw-fastrtps-cpp (0.8.0-1jammy) jammy; urgency=high
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  * Add function for getting clients by node (#293 <ros2/rmw_fastrtps#293>)
  * Implement get_actual_qos() for subscriptions (#287 <ros2/rmw_fastrtps#287>)
  * Fix error message (#290 <ros2/rmw_fastrtps#290>)
  * Contributors: Jacob Perron, M. M
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ros-rolling-rmw-fastrtps-cpp (0.7.2-1jammy) jammy; urgency=high
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  * Contributors: Nick Burek
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ros-rolling-rmw-fastrtps-cpp (0.7.1-1jammy) jammy; urgency=high
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  * Support arbitrary message namespaces  (#266 <ros2/rmw_fastrtps#266>)
  * Add qos interfaces with no-op (#271 <ros2/rmw_fastrtps#271>)
  * Updates for preallocation API. (#274 <ros2/rmw_fastrtps#274>)
  * Contributors: Jacob Perron, Michael Carroll, Ross Desmond
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ros-rolling-rmw-fastrtps-cpp (0.7.0-1jammy) jammy; urgency=high
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  * Add function to get publisher actual qos settings (#267 <ros2/rmw_fastrtps#267>)
  * pass context to wait set and fini context (#252 <ros2/rmw_fastrtps#252>)
  * Improve service_is_available logic to protect that client is waiting forever (#238 <ros2/rmw_fastrtps#238>)
  * Merge pull request #250 <ros2/rmw_fastrtps#250> from ros2/support_static_lib
  * use namespace_prefix from shared package
  * Contributors: Dirk Thomas, DongheeYe, William Woodall, ivanpauno
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ros-rolling-rmw-fastrtps-cpp (0.6.1-1jammy) jammy; urgency=high
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  * Add topic cache object for managing topic relations (#236 <ros2/rmw_fastrtps#236>)
  * Fastrtps 1.7.0 (#233 <ros2/rmw_fastrtps#233>)
  * RMW_FastRTPS configuration from XML only (#243 <ros2/rmw_fastrtps#243>)
  * refactor to support init options and context (#237 <ros2/rmw_fastrtps#237>)
  * Methods to retrieve matched counts on pub/sub (#234 <ros2/rmw_fastrtps#234>)
  * use uint8_array (#240 <ros2/rmw_fastrtps#240>)
  * Contributors: Juan Carlos, Karsten Knese, Michael Carroll, MiguelCompany, Ross Desmond, William Woodall
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ros-rolling-rmw-fastrtps-cpp (0.6.0-1jammy) jammy; urgency=high
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  * Add semicolons to all RCLCPP and RCUTILS macros. (#229 <ros2/rmw_fastrtps#229>)
  * Include node namespaces in get_node_names (#224 <ros2/rmw_fastrtps#224>)
  * add rmw_get_serialization_format (#215 <ros2/rmw_fastrtps#215>)
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  * Revert "fix template closing indentation (#214 <ros2/rmw_fastrtps#214>)"
  * fix template closing indentation (#214 <ros2/rmw_fastrtps#214>)
  * Contributors: Chris Lalancette, Dirk Thomas, Karsten Knese, Michael Carroll, Miguel Company, Mikael Arguedas
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  * update maintainer
  * Contributors: Dirk Thomas
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ros-rolling-rmw-fastrtps-cpp (0.5.0-1jammy) jammy; urgency=high
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  * Avoid allocations (#211 <ros2/rmw_fastrtps#211>)
  * Temporary buffer remove (#207 <ros2/rmw_fastrtps#207>)
  * Validate the buffer_ of CustomServiceRequest object before using it to (#210 <ros2/rmw_fastrtps#210>)
  * update usage of rcutils_join_path() (#208 <ros2/rmw_fastrtps#208>)
  * Expose raw CDR stream for publish and subscribe (#186 <ros2/rmw_fastrtps#186>)
  * Remove topic partitions (#192 <ros2/rmw_fastrtps#192>)
  * Fix leak if client reponse is never taken (#201 <ros2/rmw_fastrtps#201>)
  * Revert "Export rmw_fastrtps_cpp target" (#200 <ros2/rmw_fastrtps#200>)
  * Support access control  (#197 <ros2/rmw_fastrtps#197>)
  * Export rmw_fastrtps_cpp target (#198 <ros2/rmw_fastrtps#198>)
  * Fix deserialization segfault in bionic. (#199 <ros2/rmw_fastrtps#199>)
  * Fix namespaces (#196 <ros2/rmw_fastrtps#196>)
  * Merge pull request #182 <ros2/rmw_fastrtps#182> from ros2/node_name_in_user_data
  * add participant listener
  * add node name to user data
  * change export order for static linking (#190 <ros2/rmw_fastrtps#190>)
  * update style (#189 <ros2/rmw_fastrtps#189>)
  * optimize timeout judgement according to different condition (#187 <ros2/rmw_fastrtps#187>)
  * use existing check_wait_set_for_data to avoid duplicated code (#185 <ros2/rmw_fastrtps#185>)
  * Enable logging level manipulation from rmw_fastrtps (#156 <ros2/rmw_fastrtps#156>)
  * Small performance improvements (#183 <ros2/rmw_fastrtps#183>)
  * Segmentation error to dereference nullptr (#180 <ros2/rmw_fastrtps#180>)
  * Contributors: Dirk Thomas, Ethan Gao, Guillaume Autran, Karsten Knese, Michael Carroll, MiguelCompany, Mikael Arguedas, Minggang Wang, Rohit Salem, Shane Loretz, Sriram Raghunathan, William Woodall, jwang11
.
ros-rolling-rmw-fastrtps-cpp (0.4.0-1jammy) jammy; urgency=high
.
  * Merge pull request #178 <ros2/rmw_fastrtps#178> from ros2/fix_wrong_count
  * Merge pull request #177 <ros2/rmw_fastrtps#177> from ros2/rename_group
  * Wait set two words (#175 <ros2/rmw_fastrtps#175>)
  * not exporting pthread manually (#174 <ros2/rmw_fastrtps#174>)
  * Merge pull request #169 <ros2/rmw_fastrtps#169> from ros2/rep149
  * Merge pull request #171 <ros2/rmw_fastrtps#171> from jwang11/master
  * rcutils_join_path returns a char * now. (#173 <ros2/rmw_fastrtps#173>)
  * memory leak issue (#172 <ros2/rmw_fastrtps#172>)
  * Unify and simplify de/serializeROSmessage processing
  * Avoid duplicated code in calculateMaxSerializedSize for array and normal member (#168 <ros2/rmw_fastrtps#168>)
  * Fix the issues to dereference to nullptr (#165 <ros2/rmw_fastrtps#165>)
  * Fix rmw_fastrtps dead code (#163 <ros2/rmw_fastrtps#163>)
  * Merge pull request #167 <ros2/rmw_fastrtps#167> from deng02/tune-count-pub-sub
  * Remove string allocation in the count of subscribers and publishers
  * use auto deduction and nullptr to keep coding style consistent (#162 <ros2/rmw_fastrtps#162>)
  * Merge pull request #164 <ros2/rmw_fastrtps#164> from dejanpan/master
  * Fix several parameter check issues in rmw_fastrtps_cpp apis
  * Remove unnecessary dependency on rosidl_generator_cpp (#161 <ros2/rmw_fastrtps#161>)
  * Move the hasData checks for non-blocking wait 'timeout' higher (#158 <ros2/rmw_fastrtps#158>)
  * Support loading default XML profile file (#153 <ros2/rmw_fastrtps#153>)
  * Drop duplicated rmw_init.cpp in rmw_fastrtps_cpp/CMakeLists.txt (#155 <ros2/rmw_fastrtps#155>)
  * Merge pull request #154 <ros2/rmw_fastrtps#154> from ros2/uncrustify_master
  * Removing magic numbers: old maximun lengths (#152 <ros2/rmw_fastrtps#152>)
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@wjwwood wjwwood Awaiting requested review from wjwwood

@Karsten1987 Karsten1987 Awaiting requested review from Karsten1987

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