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authorLawrence Brakmo <brakmo@fb.com>2017-07-05 01:57:50 +0300
committerDavid S. Miller <davem@davemloft.net>2017-07-05 11:05:28 +0300
commitf856e46978b8cfaa62cf13738ebab38684b96222 (patch)
tree5ce7b92a145c33a4d6b38d1261c7d33bc95f7e62
parentca4a1cd930d74370cc64a8dd4491fba365986bb1 (diff)
downloadlinux-f856e46978b8cfaa62cf13738ebab38684b96222.tar.xz
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 <brakmo@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--samples/bpf/bpf_load.c8
1 files changed, 6 insertions, 2 deletions
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;