diff options
| -rw-r--r-- | tools/testing/selftests/bpf/progs/dynptr_success.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/progs/dynptr_success.c b/tools/testing/selftests/bpf/progs/dynptr_success.c index 7d7081d05d47..3094a1e4ee91 100644 --- a/tools/testing/selftests/bpf/progs/dynptr_success.c +++ b/tools/testing/selftests/bpf/progs/dynptr_success.c @@ -611,11 +611,12 @@ int test_dynptr_copy_xdp(struct xdp_md *xdp) struct bpf_dynptr ptr_buf, ptr_xdp; char data[] = "qwertyuiopasdfghjkl"; char buf[32] = {'\0'}; - __u32 len = sizeof(data); + __u32 len = sizeof(data), xdp_data_size; int i, chunks = 200; /* ptr_xdp is backed by non-contiguous memory */ bpf_dynptr_from_xdp(xdp, 0, &ptr_xdp); + xdp_data_size = bpf_dynptr_size(&ptr_xdp); bpf_ringbuf_reserve_dynptr(&ringbuf, len * chunks, 0, &ptr_buf); /* Destination dynptr is backed by non-contiguous memory */ @@ -673,7 +674,7 @@ int test_dynptr_copy_xdp(struct xdp_md *xdp) goto out; } - if (bpf_dynptr_copy(&ptr_xdp, 2000, &ptr_xdp, 0, len * chunks) != -E2BIG) + if (bpf_dynptr_copy(&ptr_xdp, xdp_data_size - 3000, &ptr_xdp, 0, len * chunks) != -E2BIG) err = 1; out: |