Jiri Olsa <jolsa@xxxxxxxxxx> writes: > The bpf_tracing_prog_attach error path calls bpf_prog_put > on prog, which causes refcount underflow when it's called > from link_create function. > > link_create > prog = bpf_prog_get <-- get > ... > tracing_bpf_link_attach(prog.. > bpf_tracing_prog_attach(prog.. > out_put_prog: > bpf_prog_put(prog); <-- put > > if (ret < 0) > bpf_prog_put(prog); <-- put > > Removing bpf_prog_put call from bpf_tracing_prog_attach > and making sure its callers call it instead. > > Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx> Acked-by: Toke Høiland-Jørgensen <toke@xxxxxxxxxx>
