Re: WARNING: bad unlock balance in ucma_destroy_id

syzbot has bisected this bug to: commit e1c30298ccab87151a0c4241fc5985c591598361 Author: Yishai Hadas Date: Thu Aug 13 15:32:07 2015 + IB/ucma: HW Device hot-removal support bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=157538d320 start commit: 5b394b2d Linux 4.1

WARNING: bad unlock balance in ucma_destroy_id

Hello, syzbot found the following crash on: HEAD commit:5b394b2ddf03 Linux 4.19-rc1 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=117e0da640 kernel config: https://syzkaller.appspot.com/x/.config?x=49927b422dcf0b29 dashboard link: https://syzkaller.a