stable inclusion
from stable-5.10.4
commit 9f8ebecc86a42a1ec9cd8646c752c772e7ee3bde
bugzilla: 46903

--------------------------------

commit a528b04e upstream.

xa_store() may fail, check the result.

Cc: stable@vger.kernel.org # 5.10
Fixes: 0f212204 ("io_uring: don't rely on weak ->files references")
Signed-off-by: NPavel Begunkov <asml.silence@gmail.com>
Signed-off-by: NJens Axboe <axboe@kernel.dk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>