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path: root/kernel/bpf/bpf_struct_ops.c
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Diffstat (limited to 'kernel/bpf/bpf_struct_ops.c')
-rw-r--r--kernel/bpf/bpf_struct_ops.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/kernel/bpf/bpf_struct_ops.c b/kernel/bpf/bpf_struct_ops.c
index 68a89a9f7ccd..26cb51f2db72 100644
--- a/kernel/bpf/bpf_struct_ops.c
+++ b/kernel/bpf/bpf_struct_ops.c
@@ -23,7 +23,7 @@ enum bpf_struct_ops_state {
struct bpf_struct_ops_value {
BPF_STRUCT_OPS_COMMON_VALUE;
- char data[0] ____cacheline_aligned_in_smp;
+ char data[] ____cacheline_aligned_in_smp;
};
struct bpf_struct_ops_map {
@@ -320,6 +320,7 @@ static int bpf_struct_ops_map_update_elem(struct bpf_map *map, void *key,
struct bpf_struct_ops_value *uvalue, *kvalue;
const struct btf_member *member;
const struct btf_type *t = st_ops->type;
+ struct bpf_tramp_progs *tprogs = NULL;
void *udata, *kdata;
int prog_fd, err = 0;
void *image;
@@ -343,6 +344,10 @@ static int bpf_struct_ops_map_update_elem(struct bpf_map *map, void *key,
if (uvalue->state || refcount_read(&uvalue->refcnt))
return -EINVAL;
+ tprogs = kcalloc(BPF_TRAMP_MAX, sizeof(*tprogs), GFP_KERNEL);
+ if (!tprogs)
+ return -ENOMEM;
+
uvalue = (struct bpf_struct_ops_value *)st_map->uvalue;
kvalue = (struct bpf_struct_ops_value *)&st_map->kvalue;
@@ -425,10 +430,12 @@ static int bpf_struct_ops_map_update_elem(struct bpf_map *map, void *key,
goto reset_unlock;
}
+ tprogs[BPF_TRAMP_FENTRY].progs[0] = prog;
+ tprogs[BPF_TRAMP_FENTRY].nr_progs = 1;
err = arch_prepare_bpf_trampoline(image,
st_map->image + PAGE_SIZE,
&st_ops->func_models[i], 0,
- &prog, 1, NULL, 0, NULL);
+ tprogs, NULL);
if (err < 0)
goto reset_unlock;
@@ -469,6 +476,7 @@ reset_unlock:
memset(uvalue, 0, map->value_size);
memset(kvalue, 0, map->value_size);
unlock:
+ kfree(tprogs);
mutex_unlock(&st_map->lock);
return err;
}