pull-request: bpf 2022-04-27

[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 5 non-merge commits during the last 20 day(s) which contain
a total of 6 files changed, 34 insertions(+), 12 deletions(-).

The main changes are:

1) Fix xsk sockets when rx and tx are separately bound to the same umem, also
   fix xsk copy mode combined with busy poll, from Maciej Fijalkowski.

2) Fix BPF tunnel/collect_md helpers with bpf_xmit lwt hook usage which triggered
   a crash due to invalid metadata_dst access, from Eyal Birger.

3) Fix release of page pool in XDP live packet mode, from Toke Høiland-Jørgensen.

4) Fix potential NULL pointer dereference in kretprobes, from Adam Zabrocki.

   (Masami & Steven preferred this small fix to be routed via bpf tree given it's
    follow-up fix to Masami's rethook work that went via bpf earlier, too.)

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:

Freysteinn Alfredsson, Magnus Karlsson, Masami Hiramatsu, Song Liu

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

The following changes since commit ec4eb8a86ade4d22633e1da2a7d85a846b7d1798:

  drivers: net: slip: fix NPD bug in sl_tx_timeout() (2022-04-06 23:00:16 -0700)

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 ba3beec2ec1d3b4fd8672ca6e781dac4b3267f6e:

  xsk: Fix possible crash when multiple sockets are created (2022-04-26 16:19:54 +0200)

----------------------------------------------------------------
Adam Zabrocki (1):
      kprobes: Fix KRETPROBES when CONFIG_KRETPROBE_ON_RETHOOK is set

Eyal Birger (1):
      bpf, lwt: Fix crash when using bpf_skb_set_tunnel_key() from bpf_xmit lwt hook

Maciej Fijalkowski (2):
      xsk: Fix l2fwd for copy mode + busy poll combo
      xsk: Fix possible crash when multiple sockets are created

Toke Høiland-Jørgensen (1):
      bpf: Fix release of page_pool in BPF_PROG_RUN in test runner

 include/net/xsk_buff_pool.h |  1 +
 kernel/kprobes.c            |  2 +-
 net/bpf/test_run.c          |  5 +++--
 net/core/lwt_bpf.c          |  7 +++----
 net/xdp/xsk.c               | 15 ++++++++++++++-
 net/xdp/xsk_buff_pool.c     | 16 ++++++++++++----
 6 files changed, 34 insertions(+), 12 deletions(-)