On Thu, May 16, 2019 at 11:31 AM Yonghong Song <[email protected]> wrote: > > For a host which has a lower rlimit for max locked memory (e.g., 64KB), > the following error occurs in one of our production systems: > # /usr/sbin/bpftool prog load /paragon/pods/52877437/home/mark.o \ > /sys/fs/bpf/paragon_mark_21 type cgroup/skb \ > map idx 0 pinned /sys/fs/bpf/paragon_map_21 > libbpf: Error in bpf_object__probe_name():Operation not permitted(1). > Couldn't load basic 'r0 = 0' BPF program. > Error: failed to open object file > > The reason is due to low locked memory during bpf_object__probe_name() > which probes whether program name is supported in kernel or not > during __bpf_object__open_xattr(). > > bpftool program load already tries to relax mlock rlimit before > bpf_object__load(). Let us move set_max_rlimit() before > __bpf_object__open_xattr(), which fixed the issue here. > > Fixes: 47eff61777c7 ("bpf, libbpf: introduce bpf_object__probe_caps to test > BPF capabilities") > Signed-off-by: Yonghong Song <[email protected]>
Applied. Thanks
