!5004 nilfs2: fix potential use after free in nilfs_gccache_submit_read_data()

Merge Pull Request from: @ci-robot 
 
PR sync from: ZhaoLong Wang <wangzhaolong1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/PKZ2HUOQQIK7SXVM6FZSQEM6RPF74QNQ/ 
 
https://gitee.com/src-openeuler/kernel/issues/I95AT5 
 
Link:https://gitee.com/openeuler/kernel/pulls/5004

 

Reviewed-by: zhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>