[PATCH bpf-next v1 10/14] selftests/bpf: Fix resource leaks caused by missing cleanups
From: Ihor Solodrai
Date: Wed Feb 11 2026 - 20:18:13 EST
ASAN reported a number of resource leaks:
- Add missing *__destroy(skel) calls
- Replace bpf_link__detach() with bpf_link__destroy() where appropriate
- cgrp_local_storage: Add bpf_link__destroy() when bpf_iter_create fails
- dynptr: Add missing bpf_object__close()
Signed-off-by: Ihor Solodrai <ihor.solodrai@xxxxxxxxx>
---
.../bpf/prog_tests/cgrp_local_storage.c | 4 +++-
.../testing/selftests/bpf/prog_tests/dynptr.c | 5 ++++-
.../selftests/bpf/prog_tests/sockmap_basic.c | 18 +++++++++++-------
.../selftests/bpf/prog_tests/sockmap_listen.c | 2 +-
.../bpf/prog_tests/struct_ops_private_stack.c | 1 +
.../testing/selftests/bpf/prog_tests/tc_opts.c | 1 +
.../selftests/bpf/prog_tests/test_tc_tunnel.c | 5 ++++-
7 files changed, 25 insertions(+), 11 deletions(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/cgrp_local_storage.c b/tools/testing/selftests/bpf/prog_tests/cgrp_local_storage.c
index 9015e2c2ab12..478a77cb67e6 100644
--- a/tools/testing/selftests/bpf/prog_tests/cgrp_local_storage.c
+++ b/tools/testing/selftests/bpf/prog_tests/cgrp_local_storage.c
@@ -202,7 +202,7 @@ static void test_cgroup_iter_sleepable(int cgroup_fd, __u64 cgroup_id)
iter_fd = bpf_iter_create(bpf_link__fd(link));
if (!ASSERT_GE(iter_fd, 0, "iter_create"))
- goto out;
+ goto out_link;
/* trigger the program run */
(void)read(iter_fd, buf, sizeof(buf));
@@ -210,6 +210,8 @@ static void test_cgroup_iter_sleepable(int cgroup_fd, __u64 cgroup_id)
ASSERT_EQ(skel->bss->cgroup_id, cgroup_id, "cgroup_id");
close(iter_fd);
+out_link:
+ bpf_link__destroy(link);
out:
cgrp_ls_sleepable__destroy(skel);
}
diff --git a/tools/testing/selftests/bpf/prog_tests/dynptr.c b/tools/testing/selftests/bpf/prog_tests/dynptr.c
index b9f86cb91e81..5fda11590708 100644
--- a/tools/testing/selftests/bpf/prog_tests/dynptr.c
+++ b/tools/testing/selftests/bpf/prog_tests/dynptr.c
@@ -137,11 +137,14 @@ static void verify_success(const char *prog_name, enum test_setup_type setup_typ
);
link = bpf_program__attach(prog);
- if (!ASSERT_OK_PTR(link, "bpf_program__attach"))
+ if (!ASSERT_OK_PTR(link, "bpf_program__attach")) {
+ bpf_object__close(obj);
goto cleanup;
+ }
err = bpf_prog_test_run_opts(aux_prog_fd, &topts);
bpf_link__destroy(link);
+ bpf_object__close(obj);
if (!ASSERT_OK(err, "test_run"))
goto cleanup;
diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c b/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c
index 256707e7d20d..ce010602a443 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c
@@ -204,7 +204,7 @@ static void test_skmsg_helpers_with_link(enum bpf_map_type map_type)
/* Fail since bpf_link for the same prog type has been created. */
link2 = bpf_program__attach_sockmap(prog_clone, map);
if (!ASSERT_ERR_PTR(link2, "bpf_program__attach_sockmap")) {
- bpf_link__detach(link2);
+ bpf_link__destroy(link2);
goto out;
}
@@ -230,7 +230,7 @@ static void test_skmsg_helpers_with_link(enum bpf_map_type map_type)
if (!ASSERT_OK(err, "bpf_link_update"))
goto out;
out:
- bpf_link__detach(link);
+ bpf_link__destroy(link);
test_skmsg_load_helpers__destroy(skel);
}
@@ -417,7 +417,7 @@ static void test_sockmap_skb_verdict_attach_with_link(void)
if (!ASSERT_OK_PTR(link, "bpf_program__attach_sockmap"))
goto out;
- bpf_link__detach(link);
+ bpf_link__destroy(link);
err = bpf_prog_attach(bpf_program__fd(prog), map, BPF_SK_SKB_STREAM_VERDICT, 0);
if (!ASSERT_OK(err, "bpf_prog_attach"))
@@ -426,7 +426,7 @@ static void test_sockmap_skb_verdict_attach_with_link(void)
/* Fail since attaching with the same prog/map has been done. */
link = bpf_program__attach_sockmap(prog, map);
if (!ASSERT_ERR_PTR(link, "bpf_program__attach_sockmap"))
- bpf_link__detach(link);
+ bpf_link__destroy(link);
err = bpf_prog_detach2(bpf_program__fd(prog), map, BPF_SK_SKB_STREAM_VERDICT);
if (!ASSERT_OK(err, "bpf_prog_detach2"))
@@ -747,7 +747,7 @@ static void test_sockmap_skb_verdict_peek_with_link(void)
test_sockmap_skb_verdict_peek_helper(map);
ASSERT_EQ(pass->bss->clone_called, 1, "clone_called");
out:
- bpf_link__detach(link);
+ bpf_link__destroy(link);
test_sockmap_pass_prog__destroy(pass);
}
@@ -763,12 +763,15 @@ static void test_sockmap_unconnected_unix(void)
map = bpf_map__fd(skel->maps.sock_map_rx);
stream = xsocket(AF_UNIX, SOCK_STREAM, 0);
- if (stream < 0)
+ if (stream < 0) {
+ test_sockmap_pass_prog__destroy(skel);
return;
+ }
dgram = xsocket(AF_UNIX, SOCK_DGRAM, 0);
if (dgram < 0) {
close(stream);
+ test_sockmap_pass_prog__destroy(skel);
return;
}
@@ -780,6 +783,7 @@ static void test_sockmap_unconnected_unix(void)
close(stream);
close(dgram);
+ test_sockmap_pass_prog__destroy(skel);
}
static void test_sockmap_many_socket(void)
@@ -1027,7 +1031,7 @@ static void test_sockmap_skb_verdict_vsock_poll(void)
if (xrecv_nonblock(conn, &buf, 1, 0) != 1)
FAIL("xrecv_nonblock");
detach:
- bpf_link__detach(link);
+ bpf_link__destroy(link);
close:
xclose(conn);
xclose(peer);
diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
index f1bdccc7e4e7..cc0c68bab907 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
@@ -899,7 +899,7 @@ static void test_msg_redir_to_listening_with_link(struct test_sockmap_listen *sk
redir_to_listening(family, sotype, sock_map, verdict_map, REDIR_EGRESS);
- bpf_link__detach(link);
+ bpf_link__destroy(link);
}
static void redir_partial(int family, int sotype, int sock_map, int parser_map)
diff --git a/tools/testing/selftests/bpf/prog_tests/struct_ops_private_stack.c b/tools/testing/selftests/bpf/prog_tests/struct_ops_private_stack.c
index 4006879ca3fe..c36aa2354d2f 100644
--- a/tools/testing/selftests/bpf/prog_tests/struct_ops_private_stack.c
+++ b/tools/testing/selftests/bpf/prog_tests/struct_ops_private_stack.c
@@ -56,6 +56,7 @@ static void test_private_stack_fail(void)
err = struct_ops_private_stack_fail__load(skel);
if (!ASSERT_ERR(err, "struct_ops_private_stack_fail__load"))
goto cleanup;
+ struct_ops_private_stack_fail__destroy(skel);
return;
cleanup:
diff --git a/tools/testing/selftests/bpf/prog_tests/tc_opts.c b/tools/testing/selftests/bpf/prog_tests/tc_opts.c
index dd7a138d8c3d..2a4fd367da0a 100644
--- a/tools/testing/selftests/bpf/prog_tests/tc_opts.c
+++ b/tools/testing/selftests/bpf/prog_tests/tc_opts.c
@@ -1363,6 +1363,7 @@ static void test_tc_opts_dev_cleanup_target(int target)
ASSERT_OK(system("ip link del dev tcx_opts1"), "del veth");
ASSERT_EQ(if_nametoindex("tcx_opts1"), 0, "dev1_removed");
ASSERT_EQ(if_nametoindex("tcx_opts2"), 0, "dev2_removed");
+ test_tc_link__destroy(skel);
return;
cleanup3:
err = bpf_prog_detach_opts(fd3, loopback, target, &optd);
diff --git a/tools/testing/selftests/bpf/prog_tests/test_tc_tunnel.c b/tools/testing/selftests/bpf/prog_tests/test_tc_tunnel.c
index 0fe0a8f62486..7fc4d7dd70ef 100644
--- a/tools/testing/selftests/bpf/prog_tests/test_tc_tunnel.c
+++ b/tools/testing/selftests/bpf/prog_tests/test_tc_tunnel.c
@@ -699,7 +699,7 @@ void test_tc_tunnel(void)
return;
if (!ASSERT_OK(setup(), "global setup"))
- return;
+ goto out;
for (i = 0; i < ARRAY_SIZE(subtests_cfg); i++) {
cfg = &subtests_cfg[i];
@@ -711,4 +711,7 @@ void test_tc_tunnel(void)
subtest_cleanup(cfg);
}
cleanup();
+
+out:
+ test_tc_tunnel__destroy(skel);
}
--
2.53.0