From: Lawrence Brakmo Date: Tue, 4 Jul 2017 22:57:50 +0000 (-0700) Subject: bpf: fix return in load_bpf_file X-Git-Tag: v4.13-rc1~157^2~5 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=f856e46978b8cfaa62cf13738ebab38684b96222;p=linux.git bpf: fix return in load_bpf_file The function load_bpf_file ignores the return value of load_and_attach(), so even if load_and_attach() returns an error, load_bpf_file() will return 0. Now, load_bpf_file() can call load_and_attach() multiple times and some can succeed and some could fail. I think the correct behavor is to return error on the first failed load_and_attach(). v2: Added missing SOB Signed-off-by: Lawrence Brakmo Signed-off-by: David S. Miller --- diff --git a/samples/bpf/bpf_load.c b/samples/bpf/bpf_load.c index a4be7cfa6519..899f40310bc3 100644 --- a/samples/bpf/bpf_load.c +++ b/samples/bpf/bpf_load.c @@ -567,8 +567,12 @@ static int do_load_bpf_file(const char *path, fixup_map_cb fixup_map) memcmp(shname, "perf_event", 10) == 0 || memcmp(shname, "socket", 6) == 0 || memcmp(shname, "cgroup/", 7) == 0 || - memcmp(shname, "sockops", 7) == 0) - load_and_attach(shname, data->d_buf, data->d_size); + memcmp(shname, "sockops", 7) == 0) { + ret = load_and_attach(shname, data->d_buf, + data->d_size); + if (ret != 0) + goto done; + } } ret = 0;