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

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Alexei Starovoitov says:

====================
pull-request: bpf 2020-03-12

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

We've added 12 non-merge commits during the last 8 day(s) which contain
a total of 12 files changed, 161 insertions(+), 15 deletions(-).

The main changes are:

1) Andrii fixed two bugs in cgroup-bpf.

2) John fixed sockmap.

3) Luke fixed x32 jit.

4) Martin fixed two issues in struct_ops.

5) Yonghong fixed bpf_send_signal.

6) Yoshiki fixed BTF enum.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2020-03-13 11:13:45 -07:00
parent 0d81a3f29c 90db6d772f
commit 242a6df688
12 changed files with 161 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
kernel/bpf/bpf_struct_ops.c
View File

@@ -482,13 +482,21 @@ static int bpf_struct_ops_map_delete_elem(struct bpf_map *map, void *key)
prev_state = cmpxchg(&st_map->kvalue.state,
BPF_STRUCT_OPS_STATE_INUSE,
BPF_STRUCT_OPS_STATE_TOBEFREE);
if (prev_state == BPF_STRUCT_OPS_STATE_INUSE) {
switch (prev_state) {
case BPF_STRUCT_OPS_STATE_INUSE:
st_map->st_ops->unreg(&st_map->kvalue.data);
if (refcount_dec_and_test(&st_map->kvalue.refcnt))
bpf_map_put(map);
return 0;
case BPF_STRUCT_OPS_STATE_TOBEFREE:
return -EINPROGRESS;
case BPF_STRUCT_OPS_STATE_INIT:
return -ENOENT;
default:
WARN_ON_ONCE(1);
/* Should never happen. Treat it as not found. */
return -ENOENT;
}
return 0;
}
static void bpf_struct_ops_map_seq_show_elem(struct bpf_map *map, void *key,

2
kernel/bpf/btf.c
View File

@@ -2418,7 +2418,7 @@ static int btf_enum_check_member(struct btf_verifier_env *env,
struct_size = struct_type->size;
bytes_offset = BITS_ROUNDDOWN_BYTES(struct_bits_off);
if (struct_size - bytes_offset < sizeof(int)) {
if (struct_size - bytes_offset < member_type->size) {
btf_verifier_log_member(env, struct_type, member,
"Member exceeds struct_size");
return -EINVAL;

7
kernel/bpf/cgroup.c
View File

@@ -227,6 +227,9 @@ cleanup:
for (i = 0; i < NR; i++)
bpf_prog_array_free(arrays[i]);
for (p = cgroup_parent(cgrp); p; p = cgroup_parent(p))
cgroup_bpf_put(p);
percpu_ref_exit(&cgrp->bpf.refcnt);
return -ENOMEM;
@@ -302,8 +305,8 @@ int __cgroup_bpf_attach(struct cgroup *cgrp, struct bpf_prog *prog,
u32 saved_flags = (flags & (BPF_F_ALLOW_OVERRIDE | BPF_F_ALLOW_MULTI));
struct list_head *progs = &cgrp->bpf.progs[type];
struct bpf_prog *old_prog = NULL;
struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE],
*old_storage[MAX_BPF_CGROUP_STORAGE_TYPE] = {NULL};
struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE] = {};
struct bpf_cgroup_storage *old_storage[MAX_BPF_CGROUP_STORAGE_TYPE] = {};
struct bpf_prog_list *pl, *replace_pl = NULL;
enum bpf_cgroup_storage_type stype;
int err;

5
kernel/bpf/syscall.c
View File

@@ -1510,6 +1510,11 @@ static int map_freeze(const union bpf_attr *attr)
if (IS_ERR(map))
return PTR_ERR(map);
if (map->map_type == BPF_MAP_TYPE_STRUCT_OPS) {
fdput(f);
return -ENOTSUPP;
}
mutex_lock(&map->freeze_mutex);
if (map->writecnt) {

2
kernel/trace/bpf_trace.c
View File

@@ -732,7 +732,7 @@ static int bpf_send_signal_common(u32 sig, enum pid_type type)
if (unlikely(!nmi_uaccess_okay()))
return -EPERM;
if (in_nmi()) {
if (irqs_disabled()) {
/* Do an early check on signal validity. Otherwise,
* the error is lost in deferred irq_work.
*/