Merge branch 'selftests-bpf-fix-a-few-test-failures-with-arm64-64kb-page'

Yonghong Song says:

====================
selftests/bpf: Fix a few test failures with arm64 64KB page

My local arm64 host has 64KB page size and the VM to run test_progs
also has 64KB page size. There are a few self tests assuming 4KB page
and failed in my environment.

Patch 1 reduced long assert logs so if the test fails, developers
can check logs easily. Patches 2-4 fixed three selftest failures.

Changelogs:
  v3 -> v4:
    - v3: https://lore.kernel.org/bpf/20250606213048.340421-1-yonghong.song@linux.dev/
    - In v3, I tried to use __kconfig with CONFIG_ARM64_64K_PAGES to decide to have
      4K or 64K aligned. But CI seems unhappy about this. Most likely the reason
      is due to lskel. So in v4, simply adjust/increase numbers to 64K aligned for
      test_ringbuf_write test.
  v2 -> v3:
    - v2: https://lore.kernel.org/bpf/20250606174139.3036576-1-yonghong.song@linux.dev/
    - Fix veristat failure with bpf object file test_ringbuf_write.bpf.o.
  v1 -> v2:
    - v1: https://lore.kernel.org/bpf/20250606032309.444401-1-yonghong.song@linux.dev/
    - Fix a problem with selftest release build, basically from
      BUILD_BUG_ON to ASSERT_LT.
====================

Link: https://patch.msgid.link/20250607013605.1550284-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>