Re: [PATCHv2 bpf 0/2] bpf: Fix prog_array_map_poke_run map poke update

[Ilya Leoshkevich <iii@linux.ibm.com>]

On Tue, 2023-11-28 at 10:28 +0100, Jiri Olsa wrote:
> hi,
> this patchset fixes the issue reported in [0].
> 
> For the actual fix in patch 2 I'm changing bpf_arch_text_poke to
> allow to skip
> ip address check in patch 1. I considered adding separate function
> for that,
> but because each arch implementation is bit different, adding extra
> arg seemed
> like better option.
> 
> v2 changes:
>   - make it work for other archs
> 
> thanks,
> jirka
> 
> 
> [0] https://syzkaller.appspot.com/bug?extid=97a4fe20470e9bc30810
> ---
> Jiri Olsa (2):
>       bpf: Add checkip argument to bpf_arch_text_poke
>       bpf, x64: Fix prog_array_map_poke_run map poke update
> 
>  arch/arm64/net/bpf_jit_comp.c   |  3 ++-
>  arch/riscv/net/bpf_jit_comp64.c |  5 +++--
>  arch/s390/net/bpf_jit_comp.c    |  3 ++-
>  arch/x86/net/bpf_jit_comp.c     | 24 +++++++++++++-----------
>  include/linux/bpf.h             |  2 +-
>  kernel/bpf/arraymap.c           | 31 +++++++++++--------------------
>  kernel/bpf/core.c               |  2 +-
>  kernel/bpf/trampoline.c         | 12 ++++++------
>  8 files changed, 39 insertions(+), 43 deletions(-)

Would it be possible to add a minimized version of the reproducer as a
testcase?