diff options
| author | David S. Miller <davem@davemloft.net> | 2019-02-08 15:00:17 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-02-08 15:00:17 -0800 |
| commit | a655fe9f194842693258f43b5382855db1c2f654 (patch) | |
| tree | a6e523c42378f43881c421530941dcbb529461ab /kernel/bpf/syscall.c | |
| parent | 7499a288bf1a4a49be9d72beb0a5c7b9aa6ffec9 (diff) | |
| parent | 27b4ad621e887ce8e5eb508a0103f13d30f6b38a (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
An ipvlan bug fix in 'net' conflicted with the abstraction away
of the IPV6 specific support in 'net-next'.
Similarly, a bug fix for mlx5 in 'net' conflicted with the flow
action conversion in 'net-next'.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf/syscall.c')
| -rw-r--r-- | kernel/bpf/syscall.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 0834958f1dc4..ec7c552af76b 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -740,8 +740,13 @@ static int map_lookup_elem(union bpf_attr *attr) if (bpf_map_is_dev_bound(map)) { err = bpf_map_offload_lookup_elem(map, key, value); - } else if (map->map_type == BPF_MAP_TYPE_PERCPU_HASH || - map->map_type == BPF_MAP_TYPE_LRU_PERCPU_HASH) { + goto done; + } + + preempt_disable(); + this_cpu_inc(bpf_prog_active); + if (map->map_type == BPF_MAP_TYPE_PERCPU_HASH || + map->map_type == BPF_MAP_TYPE_LRU_PERCPU_HASH) { err = bpf_percpu_hash_copy(map, key, value); } else if (map->map_type == BPF_MAP_TYPE_PERCPU_ARRAY) { err = bpf_percpu_array_copy(map, key, value); @@ -777,7 +782,10 @@ static int map_lookup_elem(union bpf_attr *attr) } rcu_read_unlock(); } + this_cpu_dec(bpf_prog_active); + preempt_enable(); +done: if (err) goto free_value; |