syzbot suspects this bug was fixed by commit: commit 30471d4b20335d9bd9ae9b2382a1e1e97d18d86d Author: Leon Romanovsky <leonro@xxxxxxxxxxxx> Date: Sun Feb 3 12:55:50 2019 +0000 RDMA/core: Share driver structure size with core bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16b7bb7ae00000 start commit: 3a5af36b Merge tag '4.19-rc3-smb3-cifs' of git://git.samba.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=9c4a80625153107e dashboard link: https://syzkaller.appspot.com/bug?extid=68dce7caebd8543121de syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1068a44e400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=146386c6400000 If the result looks correct, please mark the bug fixed by replying with: #syz fix: RDMA/core: Share driver structure size with core For information about bisection process see: https://goo.gl/tpsmEJ#bisection