pull-request: bpf 2022-06-09

[Daniel Borkmann <daniel@iogearbox.net>]

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

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

We've added 6 non-merge commits during the last 2 day(s) which contain
a total of 8 files changed, 49 insertions(+), 15 deletions(-).

The main changes are:

1) Fix an illegal copy_to_user() attempt seen by syzkaller through arm64
   BPF JIT compiler, from Eric Dumazet.

2) Fix calling global functions from BPF_PROG_TYPE_EXT programs by using
   the correct program context type, from Toke Høiland-Jørgensen.

3) Fix XSK TX batching invalid descriptor handling, from Maciej Fijalkowski.

4) Fix potential integer overflows in multi-kprobe link code by using safer
   kvmalloc_array() allocation helpers, from Dan Carpenter.

5) Add Quentin as bpftool maintainer, from Quentin Monnet.

Please consider pulling these changes from:

  git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git

Thanks a lot!

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

Alexei Starovoitov, Jakub Kicinski, KP Singh, Magnus Karlsson, Simon 
Sundberg, Song Liu, syzbot

----------------------------------------------------------------

The following changes since commit cf67838c4422eab826679b076dad99f96152b4de:

  selftests net: fix bpf build error (2022-06-07 13:19:51 +0200)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git 

for you to fetch changes up to 7c217aca85dd31dd2c8f45f6a7520767c9fae766:

  MAINTAINERS: Add a maintainer for bpftool (2022-06-08 17:16:34 +0200)

----------------------------------------------------------------
Dan Carpenter (1):
      bpf: Use safer kvmalloc_array() where possible

Eric Dumazet (1):
      bpf, arm64: Clear prog->jited_len along prog->jited

Maciej Fijalkowski (1):
      xsk: Fix handling of invalid descriptors in XSK TX batching API

Quentin Monnet (1):
      MAINTAINERS: Add a maintainer for bpftool

Toke Høiland-Jørgensen (2):
      bpf: Fix calling global functions from BPF_PROG_TYPE_EXT programs
      selftests/bpf: Add selftest for calling global functions from freplace

 MAINTAINERS                                            |  7 +++++++
 arch/arm64/net/bpf_jit_comp.c                          |  1 +
 kernel/bpf/btf.c                                       |  3 ++-
 kernel/trace/bpf_trace.c                               |  8 ++++----
 net/xdp/xsk.c                                          |  5 +++--
 net/xdp/xsk_queue.h                                    |  8 --------
 tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c | 14 ++++++++++++++
 .../testing/selftests/bpf/progs/freplace_global_func.c | 18 ++++++++++++++++++
 8 files changed, 49 insertions(+), 15 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/progs/freplace_global_func.c