pull-request: bpf 2024-07-11

[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 4 non-merge commits during the last 2 day(s) which contain
a total of 4 files changed, 262 insertions(+), 19 deletions(-).

The main changes are:

1) Fixes for a BPF timer lockup and a use-after-free scenario when timers
   are used concurrently, from Kumar Kartikeya Dwivedi.

2) Fix the argument order in the call to bpf_map_kvcalloc() which could
   otherwise lead to a compilation error, from Mohammad Shehar Yaar Tausif.

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:

Andrii Nakryiko, Christian Kujau, Dohyun Kim, Neel Natu

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The following changes since commit e1533b6319ab9c3a97dad314dd88b3783bc41b69:

  net: ethernet: lantiq_etop: fix double free in detach (2024-07-09 19:02:07 -0700)

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 50bd5a0c658d132507673c4d59347c025dd149ed:

  selftests/bpf: Add timer lockup selftest (2024-07-11 10:18:31 +0200)

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bpf-for-netdev

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Alexei Starovoitov (1):
      Merge branch 'fixes-for-bpf-timer-lockup-and-uaf'

Kumar Kartikeya Dwivedi (3):
      bpf: Fail bpf_timer_cancel when callback is being cancelled
      bpf: Defer work in bpf_timer_cancel_and_free
      selftests/bpf: Add timer lockup selftest

Mohammad Shehar Yaar Tausif (1):
      bpf: fix order of args in call to bpf_map_kvcalloc

 kernel/bpf/bpf_local_storage.c                     |  4 +-
 kernel/bpf/helpers.c                               | 99 ++++++++++++++++++----
 .../selftests/bpf/prog_tests/timer_lockup.c        | 91 ++++++++++++++++++++
 tools/testing/selftests/bpf/progs/timer_lockup.c   | 87 +++++++++++++++++++
 4 files changed, 262 insertions(+), 19 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/timer_lockup.c
 create mode 100644 tools/testing/selftests/bpf/progs/timer_lockup.c