diff options
Diffstat (limited to 'kernel/bpf/bpf_local_storage.c')
| -rw-r--r-- | kernel/bpf/bpf_local_storage.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/bpf/bpf_local_storage.c b/kernel/bpf/bpf_local_storage.c index 1904a4245ebe..e19f9f50a60d 100644 --- a/kernel/bpf/bpf_local_storage.c +++ b/kernel/bpf/bpf_local_storage.c @@ -652,11 +652,12 @@ int bpf_local_storage_map_check_btf(const struct bpf_map *map, return 0; } -bool bpf_local_storage_unlink_nolock(struct bpf_local_storage *local_storage) +void bpf_local_storage_destroy(struct bpf_local_storage *local_storage) { struct bpf_local_storage_elem *selem; bool free_storage = false; struct hlist_node *n; + unsigned long flags; /* Neither the bpf_prog nor the bpf_map's syscall * could be modifying the local_storage->list now. @@ -667,6 +668,7 @@ bool bpf_local_storage_unlink_nolock(struct bpf_local_storage *local_storage) * when unlinking elem from the local_storage->list and * the map's bucket->list. */ + raw_spin_lock_irqsave(&local_storage->lock, flags); hlist_for_each_entry_safe(selem, n, &local_storage->list, snode) { /* Always unlink from map before unlinking from * local_storage. @@ -681,8 +683,10 @@ bool bpf_local_storage_unlink_nolock(struct bpf_local_storage *local_storage) free_storage = bpf_selem_unlink_storage_nolock( local_storage, selem, false, false); } + raw_spin_unlock_irqrestore(&local_storage->lock, flags); - return free_storage; + if (free_storage) + kfree_rcu(local_storage, rcu); } u64 bpf_local_storage_map_mem_usage(const struct bpf_map *map) |