From: Jiayuan Chen <jiayuan.chen@linux.dev>
To: bpf@vger.kernel.org, memxor@gmail.com
Cc: Jiayuan Chen <jiayuan.chen@linux.dev>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Eduard Zingerman <eddyz87@gmail.com>,
Martin KaFai Lau <martin.lau@linux.dev>,
Song Liu <song@kernel.org>,
Yonghong Song <yonghong.song@linux.dev>,
Jiri Olsa <jolsa@kernel.org>,
Emil Tsalapatis <emil@etsalapatis.com>,
Shuah Khan <shuah@kernel.org>, Woojin Ji <random6.xyz@gmail.com>,
Puranjay Mohan <puranjay@kernel.org>,
Saket Kumar Bhaskar <skb99@linux.ibm.com>,
Ihor Solodrai <ihor.solodrai@linux.dev>,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org
Subject: [PATCH bpf-next 2/3] selftests/bpf: Run arena tests serially
Date: Thu, 16 Jul 2026 22:24:59 +0800 [thread overview]
Message-ID: <20260716142746.8794-2-jiayuan.chen@linux.dev> (raw)
In-Reply-To: <20260716142746.8794-1-jiayuan.chen@linux.dev>
Every arena reserves a 4GB kernel vmalloc region at creation. On a KASAN
build that eagerly populates ~512MB of shadow memory per arena. Running the
arena tests in parallel keeps several arenas alive at once, which exhausts
the memory of a small CI VM and trips the OOM killer during map creation.
Make the arena tests serial so at most one arena is alive at a time.
Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev>
---
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
next prev parent reply other threads:[~2026-07-16 14:29 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-16 14:24 [PATCH bpf-next 1/3] bpf: Add memory usage for arena Jiayuan Chen
2026-07-16 14:24 ` Jiayuan Chen [this message]
2026-07-16 14:25 ` [PATCH bpf-next 3/3] selftests/bpf: Add tests for " Jiayuan Chen
2026-07-16 15:31 ` [PATCH bpf-next 1/3] bpf: Add " bot+bpf-ci
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