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Here is my code: class DpaKernel { DpaKernel() { ... doca_dpa_create(dev-&gt;get_dev(), app, &amp;dpa_ctx, flags); } ~DpaKernel(){ if (&hellip;"> <meta name="generator" content="Discourse 3.4.0.beta4-dev - https://github.com/discourse/discourse version c8ccf79545125d4c74edef9e463e07518b245bf5"> <link rel="icon" type="image/png" href="https://global.discourse-cdn.com/nvidia/optimized/2X/0/0372ccc95874f71d7fbff64bbbff6f8c69dd850b_2_32x32.png"> <link rel="apple-touch-icon" type="image/png" href="https://global.discourse-cdn.com/nvidia/optimized/2X/8/819b2855e1f1f3249e77dc713405cf77d1eda57c_2_180x180.png"> <meta name="theme-color" media="all" content="#000000"> <meta name="color-scheme" content="light"> <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, viewport-fit=cover"> <link rel="canonical" href="https://forums.developer.nvidia.com/t/dpa-lib-memory-leak-bug/267531" /> <link rel="search" type="application/opensearchdescription+xml" 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Here is my code: class DpaKernel { DpaKernel() { ... doca_dpa_create(dev->get_dev(), app, &dpa_ctx, flags); } ~DpaKernel(){ if (dpa_ctx != nullptr) { result= doca_dpa_destroy(dpa_ctx); } } } And when I call the dealloc function of my class, the program fail to release flexio heap, the command line shows these error: heap_destroy 317 - Failed to destroy heap, not all device ..." /> <meta name="twitter:description" content="Guys, I seem to encounter a memory leak problem when using DOCA DPA lib. Here is my code: class DpaKernel { DpaKernel() { ... doca_dpa_create(dev->get_dev(), app, &dpa_ctx, flags); } ~DpaKernel(){ if (dpa_ctx != nullptr) { result= doca_dpa_destroy(dpa_ctx); } } } And when I call the dealloc function of my class, the program fail to release flexio heap, the command line shows these error: heap_destroy 317 - Failed to destroy heap, not all device ..." /> <meta property="og:article:section" content="Infrastructure & Networking" /> <meta property="og:article:section:color" content="76B900" /> <meta property="og:article:section" content="DOCA" /> <meta property="og:article:section:color" content="76B900" /> <meta property="og:article:section" content="Enterprise Networking" /> <meta property="og:article:section:color" content="76B900" /> <meta property="article:published_time" content="2023-09-25T15:46:41+00:00" /> <meta property="og:ignore_canonical" content="true" /> <script type="application/ld+json">{"@context":"http://schema.org","@type":"QAPage","name":"DPA lib Memory Leak Bug","mainEntity":{"@type":"Question","name":"DPA lib Memory Leak Bug","text":"Guys, I seem to encounter a memory leak problem when using DOCA DPA lib.\n\nHere is my code:\n\nclass DpaKernel {\n\nDpaKernel() {\n\n...\n\ndoca_dpa_create(dev->get_dev(), app, &dpa_ctx, flags);\n\n}\n\n~DpaKernel(){\n\nif (dpa_ctx != nullptr)\n\n{\n\nresult= doca_dpa_destroy(dpa_ctx);\n\n…","upvoteCount":0,"answerCount":1,"datePublished":"2023-09-25T15:46:41.196Z","author":{"@type":"Person","name":"RongxinCheng","url":"https://forums.developer.nvidia.com/u/RongxinCheng"},"acceptedAnswer":{"@type":"Answer","text":"I think I found the solution, it seems dpa kernel must first release all its events before it actually call doca_dpa_destroy. After I rewrite the order of deallocation as such, the bug is fixed.","upvoteCount":0,"datePublished":"2023-09-26T01:40:14.031Z","url":"https://forums.developer.nvidia.com/t/dpa-lib-memory-leak-bug/267531/2","author":{"@type":"Person","name":"RongxinCheng","url":"https://forums.developer.nvidia.com/u/RongxinCheng"}}}}</script> </head> <body class="crawler browser-update"> <header> <a href="/"> NVIDIA Developer Forums </a> </header> <div id="main-outlet" class="wrap" role="main"> <div id="topic-title"> <h1> <a href="/t/dpa-lib-memory-leak-bug/267531">DPA lib Memory Leak Bug</a> </h1> <div class="topic-category" itemscope itemtype="http://schema.org/BreadcrumbList"> <span itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem"> <a href="/c/infrastructure/doca/networking/374" class="badge-wrapper bullet" itemprop="item"> <span class='badge-category-bg' style='background-color: #76B900'></span> <span class='badge-category clear-badge'> <span class='category-name' 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itemtype='http://schema.org/DiscussionForumPosting'> <meta itemprop='headline' content='DPA lib Memory Leak Bug'> <link itemprop='url' href='https://forums.developer.nvidia.com/t/dpa-lib-memory-leak-bug/267531'> <meta itemprop='datePublished' content='2023-09-25T15:46:41Z'> <meta itemprop='articleSection' content='Enterprise Networking'> <meta itemprop='keywords' content=''> <div itemprop='publisher' itemscope itemtype="http://schema.org/Organization"> <meta itemprop='name' content='NVIDIA'> <div itemprop='logo' itemscope itemtype="http://schema.org/ImageObject"> <meta itemprop='url' content='https://global.discourse-cdn.com/nvidia/original/3X/a/1/a1ef6e0c1fbd3fad5bf82538b78dfaa9c5fa1a61.png'> </div> </div> <div id='post_1' class='topic-body crawler-post'> <div class='crawler-post-meta'> <span class="creator" itemprop="author" itemscope itemtype="http://schema.org/Person"> <a itemprop="url" rel='nofollow' href='https://forums.developer.nvidia.com/u/RongxinCheng'><span itemprop='name'>RongxinCheng</span></a> </span> <link itemprop="mainEntityOfPage" href="https://forums.developer.nvidia.com/t/dpa-lib-memory-leak-bug/267531"> <span class="crawler-post-infos"> <time datetime='2023-09-25T15:46:41Z' class='post-time'> September 25, 2023, 3:46pm </time> <meta itemprop='dateModified' content='2023-09-25T15:51:17Z'> <span itemprop='position'>1</span> </span> </div> <div class='post' itemprop='text'> <p>Guys, I seem to encounter a memory leak problem when using DOCA DPA lib.</p> <p>Here is my code:</p> <pre><code class="lang-cpp">class DpaKernel { DpaKernel() { ... doca_dpa_create(dev->get_dev(), app, &dpa_ctx, flags); } ~DpaKernel(){ if (dpa_ctx != nullptr) { result= doca_dpa_destroy(dpa_ctx); } } } </code></pre> <p>And when I call the dealloc function of my class, the program fail to release flexio heap, the command line shows these error:</p> <pre><code class="lang-bash">heap_destroy 317 - Failed to destroy heap, not all device heap memory was freed flexio_process_destroy 907 - Failed to release prm heap memory flexio_process_destroy 914 - Failed to destroy process PRM object (err = 22) </code></pre> <p>And LeakSanitizer detects the following memory leak stack info:</p> <pre><code class="lang-bash">==1513557==ERROR: LeakSanitizer: detected memory leaks Direct leak of 48 byte(s) in 1 object(s) allocated from: #0 0x7fb37227ea57 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x7fb3720eab02 (/lib/x86_64-linux-gnu/libmlx5.so.1+0x68b02) #2 0x7fb3721b39fe in flexio_create_prm_process ../libflexio/src/flexio_prm.c:252 #3 0x7fb3721ac1c3 in process_create ../libflexio/src/flexio.c:689 #4 0x7fb3721ac1c3 in flexio_process_create ../libflexio/src/flexio.c:845 #5 0x7fb37218377e (/opt/mellanox/doca/lib/x86_64-linux-gnu/libdoca_dpa.so.2+0x877e) #6 0x7fb37218621d in doca_dpa_create (/opt/mellanox/doca/lib/x86_64-linux-gnu/libdoca_dpa.so.2+0xb21d) #7 0x40fdab in dpu::DpaKernel::DpaKernel(std::shared_ptr<dpu::DpaDevice>&, doca_dpa_app*, unsigned int) /home/chengrx/dpa_bench/src/dpa/dpa_kernel.cc:12 #8 0x421ed2 in test::DpaKernel_Launch_Test::TestBody() /home/chengrx/dpa_bench/test/dpa/test_dpa_kernel.cc:12 #9 0x4c5397 in void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) /home/chengrx/dpa_bench/deps/googletest/googletest/src/gtest.cc:2612 #10 0x4b2e17 in void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) /home/chengrx/dpa_bench/deps/googletest/googletest/src/gtest.cc:2648 #11 0x459c25 in testing::Test::Run() /home/chengrx/dpa_bench/deps/googletest/googletest/src/gtest.cc:2687 Direct leak of 40 byte(s) in 1 object(s) allocated from: #0 0x7fb37227ea57 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x7fb3721a9c96 in heap_block_create ../libflexio/src/flexio_heap.c:55 #2 0x7fb3721a9c96 in heap_malloc ../libflexio/src/flexio_heap.c:249 #3 0x7fb3721b5dcf in flexio_buf_dev_alloc ../libflexio/src/flexio_mem.c:134 #4 0x7fb3721b5dcf in flexio_buf_dev_alloc ../libflexio/src/flexio_mem.c:116 #5 0x7fb3721b1e42 in internal_msg_stream_create ../libflexio/src/flexio_msg_stream.c:486 #6 0x7fb3721b2c1d in flexio_msg_stream_create ../libflexio/src/flexio_msg_stream.c:797 #7 0x7fb3721837e3 (/opt/mellanox/doca/lib/x86_64-linux-gnu/libdoca_dpa.so.2+0x87e3) #8 0x7fb37218621d in doca_dpa_create (/opt/mellanox/doca/lib/x86_64-linux-gnu/libdoca_dpa.so.2+0xb21d) #9 0x40fdab in dpu::DpaKernel::DpaKernel(std::shared_ptr<dpu::DpaDevice>&, doca_dpa_app*, unsigned int) /home/chengrx/dpa_bench/src/dpa/dpa_kernel.cc:12 #10 0x421ed2 in test::DpaKernel_Launch_Test::TestBody() /home/chengrx/dpa_bench/test/dpa/test_dpa_kernel.cc:12 #11 0x4c5397 in void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) /home/chengrx/dpa_bench/deps/googletest/googletest/src/gtest.cc:2612 #12 0x4b2e17 in void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) /home/chengrx/dpa_bench/deps/googletest/googletest/src/gtest.cc:2648 Direct leak of 32 byte(s) in 1 object(s) allocated from: #0 0x7fb37227ea57 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x7fb3721a99d1 in heap_malloc_from_pool ../libflexio/src/flexio_heap.c:185 #2 0x7fb3721a9e0b in heap_malloc ../libflexio/src/flexio_heap.c:264 #3 0x7fb3721b5dcf in flexio_buf_dev_alloc ../libflexio/src/flexio_mem.c:134 #4 0x7fb3721b5dcf in flexio_buf_dev_alloc ../libflexio/src/flexio_mem.c:116 #5 0x7fb3721b1e42 in internal_msg_stream_create ../libflexio/src/flexio_msg_stream.c:486 #6 0x7fb3721b2c1d in flexio_msg_stream_create ../libflexio/src/flexio_msg_stream.c:797 #7 0x7fb3721837e3 (/opt/mellanox/doca/lib/x86_64-linux-gnu/libdoca_dpa.so.2+0x87e3) #8 0x7fb37218621d in doca_dpa_create (/opt/mellanox/doca/lib/x86_64-linux-gnu/libdoca_dpa.so.2+0xb21d) #9 0x40fdab in dpu::DpaKernel::DpaKernel(std::shared_ptr<dpu::DpaDevice>&, doca_dpa_app*, unsigned int) /home/chengrx/dpa_bench/src/dpa/dpa_kernel.cc:12 #10 0x421ed2 in test::DpaKernel_Launch_Test::TestBody() /home/chengrx/dpa_bench/test/dpa/test_dpa_kernel.cc:12 #11 0x4c5397 in void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) /home/chengrx/dpa_bench/deps/googletest/googletest/src/gtest.cc:2612 Indirect leak of 48 byte(s) in 1 object(s) allocated from: #0 0x7fb37227ea57 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 #1 0x7fb3720eab02 (/lib/x86_64-linux-gnu/libmlx5.so.1+0x68b02) #2 0x7fb3721b3748 in flexio_create_prm_heap_mem ../libflexio/src/flexio_prm.c:179 #3 0x7fb3721a9d5f in heap_block_create ../libflexio/src/flexio_heap.c:67 #4 0x7fb3721a9d5f in heap_malloc ../libflexio/src/flexio_heap.c:249 #5 0x7fb3721b5dcf in flexio_buf_dev_alloc ../libflexio/src/flexio_mem.c:134 #6 0x7fb3721b5dcf in flexio_buf_dev_alloc ../libflexio/src/flexio_mem.c:116 #7 0x7fb3721b1e42 in internal_msg_stream_create ../libflexio/src/flexio_msg_stream.c:486 #8 0x7fb3721b2c1d in flexio_msg_stream_create ../libflexio/src/flexio_msg_stream.c:797 #9 0x7fb3721837e3 (/opt/mellanox/doca/lib/x86_64-linux-gnu/libdoca_dpa.so.2+0x87e3) #10 0x7fb37218621d in doca_dpa_create (/opt/mellanox/doca/lib/x86_64-linux-gnu/libdoca_dpa.so.2+0xb21d) #11 0x40fdab in dpu::DpaKernel::DpaKernel(std::shared_ptr<dpu::DpaDevice>&, doca_dpa_app*, unsigned int) /home/chengrx/dpa_bench/src/dpa/dpa_kernel.cc:12 #12 0x421ed2 in test::DpaKernel_Launch_Test::TestBody() /home/chengrx/dpa_bench/test/dpa/test_dpa_kernel.cc:12 </code></pre> <p>It seems that, the bug is related to how <code>doca_dpa_create</code> and <code>doca_dpa_destroy</code> are implemented, and I have no way to see the codes. May I ask how to fix the memory leak bugs?</p> <p>Thanks.</p> </div> <div itemprop="interactionStatistic" itemscope itemtype="http://schema.org/InteractionCounter"> <meta itemprop="interactionType" content="http://schema.org/LikeAction"/> <meta itemprop="userInteractionCount" content="0" /> <span class='post-likes'></span> </div> </div> <div id='post_2' itemprop='comment' itemscope itemtype='http://schema.org/Comment' class='topic-body crawler-post'> <div class='crawler-post-meta'> <span class="creator" itemprop="author" itemscope itemtype="http://schema.org/Person"> <a itemprop="url" rel='nofollow' href='https://forums.developer.nvidia.com/u/RongxinCheng'><span itemprop='name'>RongxinCheng</span></a> </span> <span class="crawler-post-infos"> <time itemprop='datePublished' datetime='2023-09-26T01:40:14Z' class='post-time'> September 26, 2023, 1:40am </time> <meta itemprop='dateModified' content='2023-09-26T01:40:14Z'> <span itemprop='position'>2</span> </span> </div> <div class='post' itemprop='text'> <p>I think I found the solution, it seems dpa kernel must first release all its events before it actually call <code>doca_dpa_destroy</code>. After I rewrite the order of deallocation as such, the bug is fixed.</p> </div> <div itemprop="interactionStatistic" itemscope itemtype="http://schema.org/InteractionCounter"> <meta itemprop="interactionType" content="http://schema.org/LikeAction"/> <meta itemprop="userInteractionCount" content="0" /> <span class='post-likes'></span> </div> </div> <div id='post_3' itemprop='comment' itemscope itemtype='http://schema.org/Comment' class='topic-body crawler-post'> <div class='crawler-post-meta'> <span class="creator" itemprop="author" itemscope itemtype="http://schema.org/Person"> <a itemprop="url" rel='nofollow' href='https://forums.developer.nvidia.com/u/TomNVIDIA'><span itemprop='name'>TomNVIDIA</span></a> </span> <span class="crawler-post-infos"> <time itemprop='datePublished' datetime='2023-09-26T15:05:53Z' class='post-time'> September 26, 2023, 3:05pm </time> <meta itemprop='dateModified' content='2023-09-26T15:05:53Z'> <span itemprop='position'>3</span> </span> </div> <div class='post' itemprop='text'> <p>Thanks for sharing the solution!</p> </div> <div itemprop="interactionStatistic" itemscope itemtype="http://schema.org/InteractionCounter"> <meta itemprop="interactionType" content="http://schema.org/LikeAction"/> <meta itemprop="userInteractionCount" content="0" /> <span class='post-likes'></span> </div> </div> <div id='post_4' itemprop='comment' itemscope itemtype='http://schema.org/Comment' class='topic-body crawler-post'> <div class='crawler-post-meta'> <span class="creator" itemprop="author" itemscope itemtype="http://schema.org/Person"> <a itemprop="url" rel='nofollow' href='https://forums.developer.nvidia.com/u/system'><span itemprop='name'>system</span></a> Closed </span> <span class="crawler-post-infos"> <time itemprop='datePublished' datetime='2023-10-10T15:05:58Z' class='post-time'> October 10, 2023, 3:05pm </time> <meta itemprop='dateModified' content='2023-10-10T15:05:58Z'> <span itemprop='position'>4</span> </span> </div> <div class='post' itemprop='text'> <p>This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.</p> </div> <div itemprop="interactionStatistic" itemscope itemtype="http://schema.org/InteractionCounter"> <meta itemprop="interactionType" content="http://schema.org/LikeAction"/> <meta itemprop="userInteractionCount" content="0" /> <span class='post-likes'></span> </div> </div> </div> <div id="related-topics" class="more-topics__list " role="complementary" aria-labelledby="related-topics-title"> <h3 id="related-topics-title" class="more-topics__list-title"> Related topics </h3> <div class="topic-list-container" itemscope itemtype='http://schema.org/ItemList'> <meta itemprop='itemListOrder' content='http://schema.org/ItemListOrderDescending'> <table class='topic-list'> <thead> <tr> <th>Topic</th> <th></th> <th class="replies">Replies</th> <th class="views">Views</th> <th>Activity</th> </tr> </thead> <tbody> <tr class="topic-list-item" id="topic-list-item-297790"> <td class="main-link" itemprop='itemListElement' itemscope 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