Re: WARNING in vcpu_enter_guest

[Sean Christopherson]

On Thu, Mar 19, 2020 at 03:35:16AM -0700, syzbot wrote:
> syzbot has found a reproducer for the following crash on:
> 
> HEAD commit:    5076190d mm: slub: be more careful about the double cmpxch..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=143ca61de00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=9f894bd92023de02
> dashboard link: https://syzkaller.appspot.com/bug?extid=00be5da1d75f1cc95f6b
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10bb4023e00000
> 
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+00be5da1d75f1cc95f6b@xxxxxxxxxxxxxxxxxxxxxxxxx

Reproduced with a little tweaking of the reproducer, debug in progress.