From: Yuan Chen <chenyuan@kylinos.cn>

The arena range tree can be left inconsistent when kmalloc_nolock()
fails mid-operation. Patch 1 fixes range_tree_clear(), patch 2 fixes
range_tree_set(), patch 3 makes arena_free_pages() and
arena_free_worker() handle range_tree_set() failures.

Changes in v2:
  - Fix multi-line comment style in patches 1 and 3 (opening /* on its
    own line), as pointed out in review.

Yuan Chen (3):
  bpf, arena: fix range_tree_clear inconsistency on kmalloc_nolock
    failure
  bpf, arena: fix range_tree_set inconsistency on kmalloc_nolock failure
  bpf, arena: check range_tree_set return in arena_free_pages and
    arena_free_worker

 kernel/bpf/arena.c      | 18 ++++++++++--
 kernel/bpf/range_tree.c | 61 ++++++++++++++++++++++++++++++-----------
 2 files changed, 60 insertions(+), 19 deletions(-)

-- 
2.54.0