syzbot has bisected this bug to: commit 8fcc4b5923af5de58b80b53a069453b135693304 Author: Jim Mattson <jmattson@xxxxxxxxxx> Date: Tue Jul 10 09:27:20 2018 +0000 kvm: nVMX: Introduce KVM_CAP_NESTED_STATE bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=124cdbace00000 start commit: 234b69e3 ocfs2: fix ocfs2 read block panic git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=114cdbace00000 console output: https://syzkaller.appspot.com/x/log.txt?x=164cdbace00000 kernel config: https://syzkaller.appspot.com/x/.config?x=5fa12be50bca08d8 dashboard link: https://syzkaller.appspot.com/bug?extid=7e2ab84953e4084a638d syz repro: https://syzkaller.appspot.com/x/repro.syz?x=150f0a4e400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17f67111400000 Reported-by: syzbot+7e2ab84953e4084a638d@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 8fcc4b5923af ("kvm: nVMX: Introduce KVM_CAP_NESTED_STATE") For information about bisection process see: https://goo.gl/tpsmEJ#bisection