On Wed, Jul 5, 2017 at 8:49 PM, Shubham Bansal <illusionist....@gmail.com> 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 -- Kees Cook Pixel Security
