[PATCH bpf v3 0/3] Don't reinit map value in prealloc_lru_pop

[Kumar Kartikeya Dwivedi <memxor@gmail.com>]

Fix for a bug in prealloc_lru_pop spotted while reading the code, then a test +
example that checks whether it is fixed.

Changelog:
----------
v2 -> v3:
v2: https://lore.kernel.org/bpf/20220809140615.21231-1-memxor@gmail.com

 * Switch test to use kptr instead of kptr_ref to stabilize test runs
 * Fix missing lru_bug__destroy (Yonghong)
 * Collect Acks

v1 -> v2:
v1: https://lore.kernel.org/bpf/20220806014603.1771-1-memxor@gmail.com

 * Expand commit log to include summary of the discussion with Yonghong
 * Make lru_bug selftest serial to not mess up refcount for map_kptr test

Kumar Kartikeya Dwivedi (3):
  bpf: Allow calling bpf_prog_test kfuncs in tracing programs
  bpf: Don't reinit map value in prealloc_lru_pop
  selftests/bpf: Add test for prealloc_lru_pop bug

 kernel/bpf/hashtab.c                          |  6 +--
 net/bpf/test_run.c                            |  1 +
 .../selftests/bpf/prog_tests/lru_bug.c        | 21 ++++++++
 tools/testing/selftests/bpf/progs/lru_bug.c   | 49 +++++++++++++++++++
 4 files changed, 72 insertions(+), 5 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/lru_bug.c
 create mode 100644 tools/testing/selftests/bpf/progs/lru_bug.c

-- 
2.34.1