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authorPrashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>2018-10-09 10:04:50 +0900
committerAlexei Starovoitov <ast@kernel.org>2018-10-09 21:52:20 -0700
commit3b4a63f674e94795c9b76a41b36364b8aec232e1 (patch)
treee5dae37fa352f22915e661a36af033b646bcdede /kernel/bpf/stackmap.c
parent509db2833e0ddac7faf6e7d2dd6e7f85c98fbee0 (diff)
bpf: return EOPNOTSUPP when map lookup isn't supported
Return ERR_PTR(-EOPNOTSUPP) from map_lookup_elem() methods of below map types: - BPF_MAP_TYPE_PROG_ARRAY - BPF_MAP_TYPE_STACK_TRACE - BPF_MAP_TYPE_XSKMAP - BPF_MAP_TYPE_SOCKMAP/BPF_MAP_TYPE_SOCKHASH Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf/stackmap.c')
-rw-r--r--kernel/bpf/stackmap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/bpf/stackmap.c b/kernel/bpf/stackmap.c
index 8061a439ef18..b2ade10f7ec3 100644
--- a/kernel/bpf/stackmap.c
+++ b/kernel/bpf/stackmap.c
@@ -505,7 +505,7 @@ const struct bpf_func_proto bpf_get_stack_proto = {
/* Called from eBPF program */
static void *stack_map_lookup_elem(struct bpf_map *map, void *key)
{
- return NULL;
+ return ERR_PTR(-EOPNOTSUPP);
}
/* Called from syscall */