• David S. Miller's avatar
    Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next · fcffe2ed
    David S. Miller authored
    Daniel Borkmann says:
    
    ====================
    pull-request: bpf-next 2017-12-28
    
    The following pull-request contains BPF updates for your *net-next* tree.
    
    The main changes are:
    
    1) Fix incorrect state pruning related to recognition of zero initialized
       stack slots, where stacksafe exploration would mistakenly return a
       positive pruning verdict too early ignoring other slots, from Gianluca.
    
    2) Various BPF to BPF calls related follow-up fixes. Fix an off-by-one
       in maximum call depth check, and rework maximum stack depth tracking
       logic to fix a bypass of the total stack size check reported by Jann.
       Also fix a bug in arm64 JIT where prog->jited_len was uninitialized.
       Addition of various test cases to BPF selftests, from Alexei.
    
    3) Addition of a BPF selftest to test_verifier that is related to BPF to
       BPF calls which demonstrates a late caller stack size increase and
       thus out of bounds access. Fixed above in 2). Test case from Jann.
    
    4) Addition of correlating BPF helper calls, BPF to BPF calls as well
       as BPF maps to bpftool xlated dump in order to allow for better
       BPF program introspection and debugging, from Daniel.
    
    5) Fixing several bugs in BPF to BPF calls kallsyms handling in order
       to get it actually to work for subprogs, from Daniel.
    
    6) Extending sparc64 JIT support for BPF to BPF calls and fix a couple
       of build errors for libbpf on sparc64, from David.
    
    7) Allow narrower context access for BPF dev cgroup typed programs in
       order to adapt to LLVM code generation. Also adjust memlock rlimit
       in the test_dev_cgroup BPF selftest, from Yonghong.
    
    8) Add netdevsim Kconfig entry to BPF selftests since test_offload.py
       relies on netdevsim device being available, from Jakub.
    
    9) Reduce scope of xdp_do_generic_redirect_map() to being static,
       from Xiongwei.
    
    10) Minor cleanups and spelling fixes in BPF verifier, from Colin.
    ====================
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    fcffe2ed
verifier.c 162 KB