[PATCH bpf v1 0/8] Misc bug fixes - part 2

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

A set of miscellaneous fixes for bugs reported by Nicholas, plus some
new findings by GPT-5.6-Sol and Sashiko. See commit logs for details.

Kumar Kartikeya Dwivedi (8):
  bpf: Check ancestor frames for rbtree callbacks
  selftests/bpf: Check rbtree callback restrictions in subprogs
  bpf: Mark bpf_btf_find_by_name_kind() as sleepable
  selftests/bpf: Test btf lookup helper sleepability
  bpf: Mark faultable stack helpers as sleepable
  selftests/bpf: Check faultable stack helper contexts
  bpf: Reject legacy packet loads from callbacks
  selftests/bpf: Reject legacy packet loads from callbacks

 kernel/bpf/btf.c                              |  1 +
 kernel/bpf/stackmap.c                         |  2 +
 kernel/bpf/verifier.c                         | 42 +++++---
 .../selftests/bpf/progs/preempt_lock.c        | 52 ++++++++++
 .../testing/selftests/bpf/progs/rbtree_fail.c | 55 +++++++++++
 .../bpf/progs/verifier_async_cb_context.c     | 34 +++++++
 .../selftests/bpf/progs/verifier_ld_ind.c     | 96 +++++++++++++++++++
 7 files changed, 271 insertions(+), 11 deletions(-)


base-commit: e044668419b9c444282bd09521f7ea07edbc10b1
-- 
2.53.0