1. 11 Apr, 2022 5 commits
  2. 09 Apr, 2022 1 commit
    • Jakub Kicinski's avatar
      Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next · 34ba23b4
      Jakub Kicinski authored
      Daniel Borkmann says:
      
      ====================
      pull-request: bpf-next 2022-04-09
      
      We've added 63 non-merge commits during the last 9 day(s) which contain
      a total of 68 files changed, 4852 insertions(+), 619 deletions(-).
      
      The main changes are:
      
      1) Add libbpf support for USDT (User Statically-Defined Tracing) probes.
         USDTs are an abstraction built on top of uprobes, critical for tracing
         and BPF, and widely used in production applications, from Andrii Nakryiko.
      
      2) While Andrii was adding support for x86{-64}-specific logic of parsing
         USDT argument specification, Ilya followed-up with USDT support for s390
         architecture, from Ilya Leoshkevich.
      
      3) Support name-based attaching for uprobe BPF programs in libbpf. The format
         supported is `u[ret]probe/binary_path:[raw_offset|function[+offset]]`, e.g.
         attaching to libc malloc can be done in BPF via SEC("uprobe/libc.so.6:malloc")
         now, from Alan Maguire.
      
      4) Various load/store optimizations for the arm64 JIT to shrink the image
         size by using arm64 str/ldr immediate instructions. Also enable pointer
         authentication to verify return address for JITed code, from Xu Kuohai.
      
      5) BPF verifier fixes for write access checks to helper functions, e.g.
         rd-only memory from bpf_*_cpu_ptr() must not be passed to helpers that
         write into passed buffers, from Kumar Kartikeya Dwivedi.
      
      6) Fix overly excessive stack map allocation for its base map structure and
         buckets which slipped-in from cleanups during the rlimit accounting removal
         back then, from Yuntao Wang.
      
      7) Extend the unstable CT lookup helpers for XDP and tc/BPF to report netfilter
         connection tracking tuple direction, from Lorenzo Bianconi.
      
      8) Improve bpftool dump to show BPF program/link type names, Milan Landaverde.
      
      9) Minor cleanups all over the place from various others.
      
      * https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (63 commits)
        bpf: Fix excessive memory allocation in stack_map_alloc()
        selftests/bpf: Fix return value checks in perf_event_stackmap test
        selftests/bpf: Add CO-RE relos into linked_funcs selftests
        libbpf: Use weak hidden modifier for USDT BPF-side API functions
        libbpf: Don't error out on CO-RE relos for overriden weak subprogs
        samples, bpf: Move routes monitor in xdp_router_ipv4 in a dedicated thread
        libbpf: Allow WEAK and GLOBAL bindings during BTF fixup
        libbpf: Use strlcpy() in path resolution fallback logic
        libbpf: Add s390-specific USDT arg spec parsing logic
        libbpf: Make BPF-side of USDT support work on big-endian machines
        libbpf: Minor style improvements in USDT code
        libbpf: Fix use #ifdef instead of #if to avoid compiler warning
        libbpf: Potential NULL dereference in usdt_manager_attach_usdt()
        selftests/bpf: Uprobe tests should verify param/return values
        libbpf: Improve string parsing for uprobe auto-attach
        libbpf: Improve library identification for uprobe binary path resolution
        selftests/bpf: Test for writes to map key from BPF helpers
        selftests/bpf: Test passing rdonly mem to global func
        bpf: Reject writes for PTR_TO_MAP_KEY in check_helper_mem_access
        bpf: Check PTR_TO_MEM | MEM_RDONLY in check_helper_mem_access
        ...
      ====================
      
      Link: https://lore.kernel.org/r/20220408231741.19116-1-daniel@iogearbox.netSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      34ba23b4
  3. 08 Apr, 2022 34 commits