[PATCH bpf-next 0/2] bpf/arena: Add kfunc for reserving arena guard memory regions

[Emil Tsalapatis <emil@etsalapatis.com>]

Add a new kfunc for BPF arenas that reserves a region of the mapping
to prevent it from being mapped. These regions serve as guards against
out-of-bounds accesses and are useful for debugging arena-related code.

Emil Tsalapatis (2):
  bpf/arena: add bpf_arena_guard_pages kfunc
  selftests/bpf: add selftests for bpf_arena_guard_pages

 kernel/bpf/arena.c                            |  95 +++++++++++++++-
 .../testing/selftests/bpf/bpf_arena_common.h  |   3 +
 .../selftests/bpf/progs/verifier_arena.c      | 106 ++++++++++++++++++
 .../bpf/progs/verifier_arena_large.c          |  93 +++++++++++++++
 4 files changed, 294 insertions(+), 3 deletions(-)

-- 
2.49.0