pull-request: bpf 2021-08-19

pull-request: bpf 2021-08-19

[Daniel Borkmann]

Hi David, hi Jakub,

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

We've added 3 non-merge commits during the last 3 day(s) which contain
a total of 3 files changed, 29 insertions(+), 6 deletions(-).

The main changes are:

1) Fix to clear zext_dst for dead instructions which was causing invalid program
   rejections on JITs with bpf_jit_needs_zext such as s390x, from Ilya Leoshkevich.

2) Fix RCU splat in bpf_get_current_{ancestor_,}cgroup_id() helpers when they are
   invoked from sleepable programs, from Yonghong Song.

Please consider pulling these changes from:

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

Thanks a lot!

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

The following changes since commit 519133debcc19f5c834e7e28480b60bdc234fe02:

  net: bridge: fix memleak in br_add_if() (2021-08-10 13:25:14 -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 3776f3517ed94d40ff0e3851d7ce2ce17b63099f:

  selftests, bpf: Test that dead ldx_w insns are accepted (2021-08-13 17:46:26 +0200)

----------------------------------------------------------------
Ilya Leoshkevich (2):
      bpf: Clear zext_dst of dead insns
      selftests, bpf: Test that dead ldx_w insns are accepted

Yonghong Song (1):
      bpf: Add rcu_read_lock in bpf_get_current_[ancestor_]cgroup_id() helpers

 kernel/bpf/helpers.c                             | 22 ++++++++++++++++------
 kernel/bpf/verifier.c                            |  1 +
 tools/testing/selftests/bpf/verifier/dead_code.c | 12 ++++++++++++
 3 files changed, 29 insertions(+), 6 deletions(-)