selftests/bpf: Don't mask result of bpf_csum_diff() in test_verifier

The bpf_csum_diff() helper has been fixed to return a 16-bit value for
all archs, so now we don't need to mask the result.

This commit is basically reverting the below:

commit 6185266c5a85 ("selftests/bpf: Mask bpf_csum_diff() return value
to 16 bits in test_verifier")

Signed-off-by: Puranjay Mohan <puranjay@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20241026125339.26459-4-puranjay@kernel.org

diff --git a/tools/testing/selftests/bpf/progs/verifier_array_access.c b/tools/testing/selftests/bpf/progs/verifier_array_access.c
index 95d7ecc12963b3ccfe8b5034badb4288054ec215..4195aa824ba553b704d2ed868dbc5e51e5e9fa0d 100644 (file)
--- a/tools/testing/selftests/bpf/progs/verifier_array_access.c
+++ b/tools/testing/selftests/bpf/progs/verifier_array_access.c
@@ -368,8 +368,7 @@ __naked void a_read_only_array_2_1(void)
        r4 = 0;                                         \
        r5 = 0;                                         \
        call %[bpf_csum_diff];                          \
-l0_%=: r0 &= 0xffff;                                   \
-       exit;                                           \
+l0_%=: exit;                                           \
 "      :
        : __imm(bpf_csum_diff),
          __imm(bpf_map_lookup_elem),