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| author | Alexei Starovoitov <ast@kernel.org> | 2022-05-12 18:10:25 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2022-05-13 15:13:48 +0200 |
| commit | 365d519923a279af379a8d0f641ef50e44bb610e (patch) | |
| tree | 947f7418f30a4a0b8280544818a4ac7b4c9a2385 /tools/testing/selftests/bpf/progs/test_subprogs.c | |
| parent | 4b6313cf99b0d51b49aeaea98ec76ca8161ecb80 (diff) | |
| download | linux-stable-365d519923a279af379a8d0f641ef50e44bb610e.tar.gz linux-stable-365d519923a279af379a8d0f641ef50e44bb610e.tar.bz2 linux-stable-365d519923a279af379a8d0f641ef50e44bb610e.zip | |
selftests/bpf: Check combination of jit blinding and pointers to bpf subprogs.
Check that ld_imm64 with src_reg=1 (aka BPF_PSEUDO_FUNC) works
with jit_blinding.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20220513011025.13344-2-alexei.starovoitov@gmail.com
Diffstat (limited to 'tools/testing/selftests/bpf/progs/test_subprogs.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/test_subprogs.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_subprogs.c b/tools/testing/selftests/bpf/progs/test_subprogs.c index b7c37ca09544..f8e9256cf18d 100644 --- a/tools/testing/selftests/bpf/progs/test_subprogs.c +++ b/tools/testing/selftests/bpf/progs/test_subprogs.c @@ -89,6 +89,11 @@ int prog2(void *ctx) return 0; } +static int empty_callback(__u32 index, void *data) +{ + return 0; +} + /* prog3 has the same section name as prog1 */ SEC("raw_tp/sys_enter") int prog3(void *ctx) @@ -98,6 +103,9 @@ int prog3(void *ctx) if (!BPF_CORE_READ(t, pid) || !get_task_tgid((uintptr_t)t)) return 1; + /* test that ld_imm64 with BPF_PSEUDO_FUNC doesn't get blinded */ + bpf_loop(1, empty_callback, NULL, 0); + res3 = sub3(5) + 6; /* (5 + 3 + (4 + 1)) + 6 = 19 */ return 0; } |