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| author |   Andrii Nakryiko <andriin@fb.com> | 2019-11-21 09:59:00 -0800 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2019-11-24 16:58:46 -0800 |
| commit | 6147a140c99f1ded2b519dfbed17e781e5861bf3 (patch) | |
| tree | 3d3484f31c432843f412fb9ee4bf72ee8777baed /tools/testing/selftests/bpf/progs | |
| parent | libbpf: Fix bpf_object name determination for bpf_object__open_file() (diff) | |
| download | linux-dev-6147a140c99f1ded2b519dfbed17e781e5861bf3.tar.xz linux-dev-6147a140c99f1ded2b519dfbed17e781e5861bf3.zip | |
selftests/bpf: Ensure core_reloc_kernel is reading test_progs's data only
test_core_reloc_kernel.c selftest is the only CO-RE test that reads and
returns for validation calling thread's information (pid, tgid, comm). Thus it
has to make sure that only test_prog's invocations are honored.
Fixes: df36e621418b ("selftests/bpf: add CO-RE relocs testing setup")
Reported-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20191121175900.3486133-1-andriin@fb.com
Diffstat (limited to '')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/test_core_reloc_kernel.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_core_reloc_kernel.c b/tools/testing/selftests/bpf/progs/test_core_reloc_kernel.c index 5d499ebdc4bd..270de441b60a 100644 --- a/tools/testing/selftests/bpf/progs/test_core_reloc_kernel.c +++ b/tools/testing/selftests/bpf/progs/test_core_reloc_kernel.c @@ -11,6 +11,7 @@ char _license[] SEC("license") = "GPL"; struct { char in[256]; char out[256]; + uint64_t my_pid_tgid; } data = {}; struct core_reloc_kernel_output { @@ -38,6 +39,9 @@ int test_core_kernel(void *ctx) uint32_t real_tgid = (uint32_t)pid_tgid; int pid, tgid; + if (data.my_pid_tgid != pid_tgid) + return 0; + if (CORE_READ(&pid, &task->pid) || CORE_READ(&tgid, &task->tgid)) return 1; |