Re: [PATCH bpf-next] bpf: fix too large copy from user in bpf_test_init

2020-05-19 Thread Daniel Borkmann
On 5/18/20 3:05 PM, Jesper Dangaard Brouer wrote: Commit bc56c919fce7 ("bpf: Add xdp.frame_sz in bpf_prog_test_run_xdp().") recently changed bpf_prog_test_run_xdp() to use larger frames for XDP in order to test tail growing frames (via bpf_xdp_adjust_tail) and to have memory backing frame better

Re: [PATCH bpf-next] bpf: fix too large copy from user in bpf_test_init

2020-05-18 Thread Andrii Nakryiko
On Mon, May 18, 2020 at 6:08 AM Jesper Dangaard Brouer wrote: > > Commit bc56c919fce7 ("bpf: Add xdp.frame_sz in bpf_prog_test_run_xdp().") > recently changed bpf_prog_test_run_xdp() to use larger frames for XDP in > order to test tail growing frames (via bpf_xdp_adjust_tail) and to have > memory

[PATCH bpf-next] bpf: fix too large copy from user in bpf_test_init

2020-05-18 Thread Jesper Dangaard Brouer
Commit bc56c919fce7 ("bpf: Add xdp.frame_sz in bpf_prog_test_run_xdp().") recently changed bpf_prog_test_run_xdp() to use larger frames for XDP in order to test tail growing frames (via bpf_xdp_adjust_tail) and to have memory backing frame better resemble drivers. The commit contains a bug, as it