[PATCH bpf v1 0/8] Misc bug fixes - part 4

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

A set of miscellaneous fixes for bugs reported by Nicholas, and GPT-5.6
when analyzing those fixes, batched together again. See commit logs for
details. Related rhtab fixes from Yuan Chen and Nuoqi Gui have been
folded into the series.

Kumar Kartikeya Dwivedi (5):
  selftests/bpf: Test timer field on recycled rhtab element
  bpf: Mark NULL kptr stores precise
  selftests/bpf: Test imprecise scalar kptr stores
  bpf: Preserve inner map identity in callback frames
  selftests/bpf: Test inner map identities in callbacks

Nuoqi Gui (2):
  bpf: Cancel special fields when recycling rhtab elements
  selftests/bpf: Test rhtab kptr cancellation semantics

Yuan Chen (1):
  bpf: Preserve special fields in recycled rhtab elements

 kernel/bpf/hashtab.c                          |  18 +--
 kernel/bpf/verifier.c                         |  21 ++-
 .../testing/selftests/bpf/prog_tests/rhash.c  |   6 +
 .../selftests/bpf/prog_tests/rhash_timer.c    | 141 ++++++++++++++++++
 .../selftests/bpf/prog_tests/timer_mim.c      |  29 +++-
 .../selftests/bpf/progs/map_kptr_fail.c       |  37 +++++
 tools/testing/selftests/bpf/progs/rhash.c     | 112 ++++++++++++++
 .../testing/selftests/bpf/progs/rhash_timer.c |  98 ++++++++++++
 .../selftests/bpf/progs/timer_mim_reject.c    |  84 ++++++++++-
 9 files changed, 525 insertions(+), 21 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/rhash_timer.c
 create mode 100644 tools/testing/selftests/bpf/progs/rhash_timer.c


base-commit: 254c881fe0554c5efb16d355c273702a27a32a20
-- 
2.53.0