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-rw-r--r--net/core/sock_map.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/core/sock_map.c b/net/core/sock_map.c
index 992504478e68..085cef5857bb 100644
--- a/net/core/sock_map.c
+++ b/net/core/sock_map.c
@@ -250,6 +250,7 @@ static void sock_map_free(struct bpf_map *map)
}
raw_spin_unlock_bh(&stab->lock);
+ /* wait for psock readers accessing its map link */
synchronize_rcu();
bpf_map_area_free(stab->sks);
@@ -877,6 +878,9 @@ static void sock_hash_free(struct bpf_map *map)
raw_spin_unlock_bh(&bucket->lock);
}
+ /* wait for psock readers accessing its map link */
+ synchronize_rcu();
+
bpf_map_area_free(htab->buckets);
kfree(htab);
}