Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Alexei Starovoitov says:

====================
pull-request: bpf-next 2019-05-31

The following pull-request contains BPF updates for your *net-next* tree.

Lots of exciting new features in the first PR of this developement cycle!
The main changes are:

1) misc verifier improvements, from Alexei.

2) bpftool can now convert btf to valid C, from Andrii.

3) verifier can insert explicit ZEXT insn when requested by 32-bit JITs.
   This feature greatly improves BPF speed on 32-bit architectures. From Jiong.

4) cgroups will now auto-detach bpf programs. This fixes issue of thousands
   bpf programs got stuck in dying cgroups. From Roman.

5) new bpf_send_signal() helper, from Yonghong.

6) cgroup inet skb programs can signal CN to the stack, from Lawrence.

7) miscellaneous cleanups, from many developers.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 7 deletions

diff --git a/net/core/sock_map.c b/net/core/sock_map.c
index be6092ac69f8..52d4faeee18b 100644
--- a/net/core/sock_map.c
+++ b/net/core/sock_map.c
@@ -44,13 +44,7 @@ static struct bpf_map *sock_map_alloc(union bpf_attr *attr)
 
 	/* Make sure page count doesn't overflow. */
 	cost = (u64) stab->map.max_entries * sizeof(struct sock *);
-	if (cost >= U32_MAX - PAGE_SIZE) {
-		err = -EINVAL;
-		goto free_stab;
-	}
-
-	stab->map.pages = round_up(cost, PAGE_SIZE) >> PAGE_SHIFT;
-	err = bpf_map_precharge_memlock(stab->map.pages);
+	err = bpf_map_charge_init(&stab->map.memory, cost);
 	if (err)
 		goto free_stab;
 
@@ -60,6 +54,7 @@ static struct bpf_map *sock_map_alloc(union bpf_attr *attr)
 	if (stab->sks)
 		return &stab->map;
 	err = -ENOMEM;
+	bpf_map_charge_finish(&stab->map.memory);
 free_stab:
 	kfree(stab);
 	return ERR_PTR(err);