pull-request: bpf 2023-01-04

[Alexei Starovoitov <alexei.starovoitov@gmail.com>]

Hi David, hi Jakub, hi Paolo, hi Eric,

The following pull-request contains BPF updates for your *net* tree.

We've added 5 non-merge commits during the last 8 day(s) which contain
a total of 5 files changed, 112 insertions(+), 18 deletions(-).

The main changes are:

1) Always use maximal size for copy_array in the verifier to fix KASAN tracking, from Kees.

2) Fix bpf task iterator walking through dead tasks, from Kui-Feng.

3) Make sure livepatch and bpf fexit can coexist, from Chuang.

Please consider pulling these changes from:

  git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git tags/for-netdev

Thanks a lot!

Also thanks to reporters, reviewers and testers of commits in this pull-request:

Hyunwoo Kim, Jiri Olsa, Nathan Slingerland, Song Liu, Yonghong Song

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The following changes since commit 40cab44b9089a41f71bbd0eff753eb91d5dafd68:

  net/sched: fix retpoline wrapper compilation on configs without tc filters (2022-12-28 12:11:32 +0000)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git tags/for-netdev

for you to fetch changes up to 45435d8da71f9f3e6860e6e6ea9667b6ec17ec64:

  bpf: Always use maximal size for copy_array() (2022-12-28 14:54:53 -0800)

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Alexei Starovoitov (2):
      selftests/bpf: Temporarily disable part of btf_dump:var_data test.
      Merge branch 'bpf: fix the crash caused by task iterators over vma'

Chuang Wang (1):
      bpf: Fix panic due to wrong pageattr of im->image

Kees Cook (1):
      bpf: Always use maximal size for copy_array()

Kui-Feng Lee (2):
      bpf: keep a reference to the mm, in case the task is dead.
      selftests/bpf: add a test for iter/task_vma for short-lived processes

 kernel/bpf/task_iter.c                            | 39 ++++++++----
 kernel/bpf/trampoline.c                           |  4 ++
 kernel/bpf/verifier.c                             | 12 ++--
 tools/testing/selftests/bpf/prog_tests/bpf_iter.c | 73 +++++++++++++++++++++++
 tools/testing/selftests/bpf/prog_tests/btf_dump.c |  2 +-
 5 files changed, 112 insertions(+), 18 deletions(-)