diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/cgroup_storage.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/cgroup_storage.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/cgroup_storage.c b/tools/testing/selftests/bpf/prog_tests/cgroup_storage.c index cf395715ced4..8dab655db342 100644 --- a/tools/testing/selftests/bpf/prog_tests/cgroup_storage.c +++ b/tools/testing/selftests/bpf/prog_tests/cgroup_storage.c @@ -1,5 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 +#include <unistd.h> +#include <sys/socket.h> #include <test_progs.h> #include "cgroup_helpers.h" #include "network_helpers.h" @@ -86,6 +88,11 @@ void test_cgroup_storage(void) err = SYS_NOFAIL(PING_CMD); ASSERT_OK(err, "sixth ping"); + err = bpf_map__get_next_key(skel->maps.cgroup_storage, &key, &key, + sizeof(key)); + ASSERT_ERR(err, "bpf_map__get_next_key should fail"); + ASSERT_EQ(errno, ENOENT, "no second key"); + cleanup_progs: cgroup_storage__destroy(skel); cleanup_network: @@ -94,3 +101,43 @@ cleanup_cgroup: close(cgroup_fd); cleanup_cgroup_environment(); } + +void test_cgroup_storage_oob(void) +{ + struct cgroup_storage *skel; + int cgroup_fd, sock_fd; + + cgroup_fd = cgroup_setup_and_join(TEST_CGROUP); + if (!ASSERT_OK_FD(cgroup_fd, "create cgroup")) + return; + + /* Load and attach BPF program */ + skel = cgroup_storage__open_and_load(); + if (!ASSERT_OK_PTR(skel, "cgroup_storage__open_and_load")) + goto cleanup_cgroup; + + skel->links.trigger_oob = bpf_program__attach_cgroup(skel->progs.trigger_oob, + cgroup_fd); + if (!ASSERT_OK_PTR(skel->links.trigger_oob, "attach_cgroup")) + goto cleanup_skel; + + /* Create a socket to trigger cgroup/sock_create hook. + * This will execute our BPF program and trigger the OOB read + * if the bug is present (before the fix). + */ + sock_fd = socket(AF_INET, SOCK_DGRAM, 0); + if (!ASSERT_OK_FD(sock_fd, "create socket")) + goto cleanup_skel; + + close(sock_fd); + + /* If we reach here without a kernel panic or KASAN report, + * the test passes (the fix is working). + */ + +cleanup_skel: + cgroup_storage__destroy(skel); +cleanup_cgroup: + close(cgroup_fd); + cleanup_cgroup_environment(); +} |