From: Andrey Ignatov rdna@fb.com
[ Upstream commit 60e5ca8a64bad8f3e2e20a1e57846e497361c700 ]
Add missed bpf_map_charge_init() in sock_hash_alloc() and correspondingly bpf_map_charge_finish() on ENOMEM.
It was found accidentally while working on unrelated selftest that checks "map->memory.pages > 0" is true for all map types.
Before: # bpftool m l ... 3692: sockhash name m_sockhash flags 0x0 key 4B value 4B max_entries 8 memlock 0B
After: # bpftool m l ... 84: sockmap name m_sockmap flags 0x0 key 4B value 4B max_entries 8 memlock 4096B
Fixes: 604326b41a6f ("bpf, sockmap: convert to generic sk_msg interface") Signed-off-by: Andrey Ignatov rdna@fb.com Signed-off-by: Alexei Starovoitov ast@kernel.org Link: https://lore.kernel.org/bpf/20200612000857.2881453-1-rdna@fb.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/core/sock_map.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/net/core/sock_map.c b/net/core/sock_map.c index b22e9f119180..6bbc118bf00e 100644 --- a/net/core/sock_map.c +++ b/net/core/sock_map.c @@ -837,11 +837,15 @@ static struct bpf_map *sock_hash_alloc(union bpf_attr *attr) err = -EINVAL; goto free_htab; } + err = bpf_map_charge_init(&htab->map.memory, cost); + if (err) + goto free_htab;
htab->buckets = bpf_map_area_alloc(htab->buckets_num * sizeof(struct bpf_htab_bucket), htab->map.numa_node); if (!htab->buckets) { + bpf_map_charge_finish(&htab->map.memory); err = -ENOMEM; goto free_htab; }