From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-189.mta0.migadu.com (out-189.mta0.migadu.com [91.218.175.189]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1EFD83C2B9B for ; Fri, 17 Jul 2026 11:44:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.189 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784288649; cv=none; b=NYy+kuvPQfoOgkfvvaaMVBKISpUZBBM/c8/+3KVKlCNv3VjwFnmdIR60VclcWVvOku68uWibqB+MtQ2wXzXVm4MfCOPWx08MrAItYiBCvLeYuRV7OKEUS1jvvBJCM1NzRmzmDo2CWrozInRPK0xWqO1vfTKg0CjfNl0Bv+7aXTM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784288649; c=relaxed/simple; bh=dWmvp43IKVubgTW2JezViPLkZPLDROd8zoUS3bFSBiY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=g5U9svB96HmwJET99mdv8bSlnh7PXxNVEKBjJD/9CKleLT0PumyzTyiQGFNB4NnC4apPq1nESPQF0fOTwfQWp/IRzeVM+e7gomILNXRSr9LwLD2o5vRdF8Ev+xT674YIZ9riZws1zgalTsC/t+1ZlgPM2gpWkK2w17vOkGc0L9Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=uO7+lBxO; arc=none smtp.client-ip=91.218.175.189 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="uO7+lBxO" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1784288644; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=KqllfF2sjMjOj+hOcfuOpL2ZB+wrDIwyDEsvI0vRnLw=; b=uO7+lBxO6UkP+MNeT3ZzvAzKKDc3IkSKT0v/DiBu2a91C39NDWAfp6FBSW83VR4GMQCt/N 2dkaPde4KGpzjQQN60kfNP3wF2/V6MD0mXBTFaMUAULT304jPdDFj4X9r/KaSZ9ZBzDjyu edyvSLvgMMAo8rqleLb3Ws1dHNeuAGY= From: Jiayuan Chen To: bpf@vger.kernel.org Cc: Jiayuan Chen , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Eduard Zingerman , Kumar Kartikeya Dwivedi , Martin KaFai Lau , Song Liu , Yonghong Song , Jiri Olsa , Emil Tsalapatis , Shuah Khan , Woojin Ji , Puranjay Mohan , Saket Kumar Bhaskar , Ihor Solodrai , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH bpf-next v2 3/4] selftests/bpf: Run arena tests serially Date: Fri, 17 Jul 2026 19:37:03 +0800 Message-ID: <20260717114117.350851-4-jiayuan.chen@linux.dev> In-Reply-To: <20260717114117.350851-1-jiayuan.chen@linux.dev> References: <20260717114117.350851-1-jiayuan.chen@linux.dev> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT Every arena reserves a 4GB kernel vmalloc region at creation, and on a KASAN build that eagerly populates ~512MB of shadow memory per arena. When several arena tests run in parallel their shadow adds up, exhausts the memory of a small CI VM and trips the OOM killer during map creation. Make the dedicated arena tests (arena_* and libarena*) serial so they no longer pile up in the parallel phase. That alone brings the peak number of live arenas back within the CI memory budget. A few other tests such as verifier_arena*, stream and compute_live_registers create an arena too, but they run inside shared RUN_TESTS()/RUN() suites, so turning them serial would drag many unrelated subtests along with them. Leave those as-is. Signed-off-by: Jiayuan Chen --- tools/testing/selftests/bpf/prog_tests/arena_atomics.c | 2 +- tools/testing/selftests/bpf/prog_tests/arena_direct_value.c | 2 +- tools/testing/selftests/bpf/prog_tests/arena_htab.c | 2 +- tools/testing/selftests/bpf/prog_tests/arena_list.c | 2 +- tools/testing/selftests/bpf/prog_tests/arena_spin_lock.c | 2 +- tools/testing/selftests/bpf/prog_tests/arena_strsearch.c | 2 +- tools/testing/selftests/bpf/prog_tests/libarena.c | 2 +- tools/testing/selftests/bpf/prog_tests/libarena_asan.c | 2 +- 8 files changed, 8 insertions(+), 8 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/arena_atomics.c b/tools/testing/selftests/bpf/prog_tests/arena_atomics.c index d98577a6babc..1ad5d03d07ad 100644 --- a/tools/testing/selftests/bpf/prog_tests/arena_atomics.c +++ b/tools/testing/selftests/bpf/prog_tests/arena_atomics.c @@ -222,7 +222,7 @@ static void test_store_release(struct arena_atomics *skel) "store_release64_result"); } -void test_arena_atomics(void) +void serial_test_arena_atomics(void) { struct arena_atomics *skel; int err; diff --git a/tools/testing/selftests/bpf/prog_tests/arena_direct_value.c b/tools/testing/selftests/bpf/prog_tests/arena_direct_value.c index 4b4adb3f4b71..01fcf4965ea4 100644 --- a/tools/testing/selftests/bpf/prog_tests/arena_direct_value.c +++ b/tools/testing/selftests/bpf/prog_tests/arena_direct_value.c @@ -66,7 +66,7 @@ static void test_arena_direct_value_one_past_end(void) close(map_fd); } -void test_arena_direct_value(void) +void serial_test_arena_direct_value(void) { if (test__start_subtest("one_past_end")) test_arena_direct_value_one_past_end(); diff --git a/tools/testing/selftests/bpf/prog_tests/arena_htab.c b/tools/testing/selftests/bpf/prog_tests/arena_htab.c index d69fd2465f53..91ccf0402980 100644 --- a/tools/testing/selftests/bpf/prog_tests/arena_htab.c +++ b/tools/testing/selftests/bpf/prog_tests/arena_htab.c @@ -81,7 +81,7 @@ static void test_arena_htab_asm(void) arena_htab_asm__destroy(skel); } -void test_arena_htab(void) +void serial_test_arena_htab(void) { if (test__start_subtest("arena_htab_llvm")) test_arena_htab_llvm(); diff --git a/tools/testing/selftests/bpf/prog_tests/arena_list.c b/tools/testing/selftests/bpf/prog_tests/arena_list.c index 4f2866a615ce..2648e06f53d0 100644 --- a/tools/testing/selftests/bpf/prog_tests/arena_list.c +++ b/tools/testing/selftests/bpf/prog_tests/arena_list.c @@ -68,7 +68,7 @@ static void test_arena_list_add_del(int cnt, bool nonsleepable) arena_list__destroy(skel); } -void test_arena_list(void) +void serial_test_arena_list(void) { if (test__start_subtest("arena_list_1")) test_arena_list_add_del(1, false); diff --git a/tools/testing/selftests/bpf/prog_tests/arena_spin_lock.c b/tools/testing/selftests/bpf/prog_tests/arena_spin_lock.c index acb9d53b5973..545b05d7a0aa 100644 --- a/tools/testing/selftests/bpf/prog_tests/arena_spin_lock.c +++ b/tools/testing/selftests/bpf/prog_tests/arena_spin_lock.c @@ -101,7 +101,7 @@ static void test_arena_spin_lock_size(int size) return; } -void test_arena_spin_lock(void) +void serial_test_arena_spin_lock(void) { repeat = 1000; if (test__start_subtest("arena_spin_lock_1")) diff --git a/tools/testing/selftests/bpf/prog_tests/arena_strsearch.c b/tools/testing/selftests/bpf/prog_tests/arena_strsearch.c index f81a0c066505..0c1c6cbfa0f1 100644 --- a/tools/testing/selftests/bpf/prog_tests/arena_strsearch.c +++ b/tools/testing/selftests/bpf/prog_tests/arena_strsearch.c @@ -23,7 +23,7 @@ static void test_arena_str(void) arena_strsearch__destroy(skel); } -void test_arena_strsearch(void) +void serial_test_arena_strsearch(void) { if (test__start_subtest("arena_strsearch")) test_arena_str(); diff --git a/tools/testing/selftests/bpf/prog_tests/libarena.c b/tools/testing/selftests/bpf/prog_tests/libarena.c index ba5a5a50f7c0..df7e4b8dc394 100644 --- a/tools/testing/selftests/bpf/prog_tests/libarena.c +++ b/tools/testing/selftests/bpf/prog_tests/libarena.c @@ -202,7 +202,7 @@ static void run_libarena_parallel_test(struct libarena *skel, struct bpf_program run_libarena_parallel_fini(skel, name, prefixlen); } -void test_libarena(void) +void serial_test_libarena(void) { struct arena_alloc_reserve_args args; struct libarena *skel; diff --git a/tools/testing/selftests/bpf/prog_tests/libarena_asan.c b/tools/testing/selftests/bpf/prog_tests/libarena_asan.c index f897405f701d..9c31b17dbf39 100644 --- a/tools/testing/selftests/bpf/prog_tests/libarena_asan.c +++ b/tools/testing/selftests/bpf/prog_tests/libarena_asan.c @@ -85,7 +85,7 @@ static void run_test(void) * Run the test depending on whether LLVM can compile arena ASAN * programs. */ -void test_libarena_asan(void) +void serial_test_libarena_asan(void) { #ifdef HAS_BPF_ARENA_ASAN run_test(); -- 2.43.0