Re: [PATCH v2] arm: eBPF JIT compiler
From: Shubham Bansal
Date: Fri Jul 07 2017 - 00:49:27 EST
Okay Kees. I will take a look at it.
On Fri, Jul 7, 2017 at 10:12 AM, Kees Cook <keescook@xxxxxxxxxxxx> wrote:
> On Wed, Jul 5, 2017 at 8:49 PM, Shubham Bansal
> <illusionist.neo@xxxxxxxxx> wrote:
>> Hi Kees,
>> Problem is my ARM machine don't have clang and iproute2 which is
>> keeping me from testing the bpf tail calls.
>> You should do the following to test it,.
>> 1. tools/testing/selftests/bpf/
>> 2. make
>> 3. sudo ./test_progs
>> And, before testing, you have to do "make headers_install".
>> These tests are for tail calls with the attached patch. If its too
>> much work, Can you please upload your arm image so that I can test it?
>> I just need a good machine.
> I've got all this set up now, and it faults during the test:
> Unable to handle kernel NULL pointer dereference at virtual address 00000008
> CPU: 0 PID: 1922 Comm: test_progs Not tainted 4.12.0+ #60
> PC is at __htab_map_lookup_elem+0x54/0x1f4
> I'll see if I can send you this disk image...
> Kees Cook
> Pixel Security