diff --git a/fs/aio.c b/fs/aio.c
index 3bc068c1cb9cbfaec0e33dfe5efd26ec361e2c93..c3f005dc2d55211ea055ad8ccc9715a76eff24ac 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -812,7 +812,7 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id)
 		goto out;
 
 	ctx = table->table[id];
-	if (ctx->user_id == ctx_id) {
+	if (ctx && ctx->user_id == ctx_id) {
 		percpu_ref_get(&ctx->users);
 		ret = ctx;
 	}