Hello, syzbot found the following issue on: HEAD commit: 47c1c54d1bcd Add linux-next specific files for 20220517 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=137f0301f00000 kernel config: https://syzkaller.appspot.com/x/.config?x=95ad7f734b04ada9 dashboard link: https://syzkaller.appspot.com/bug?extid=7013da477748d0b624b9 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+7013da477748d0b624b9@xxxxxxxxxxxxxxxxxxxxxxxxx drivers/nvme/host/fc.c:1914: undefined reference to `blkcg_get_fc_appid' --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.