[syzbot] BUG: spinlock bad magic in synchronize_srcu

[Sean Christopherson]

On Wed, Oct 27, 2021, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
> 
> commit eb7511bf9182292ef1df1082d23039e856d1ddfb
> Author: Haimin Zhang <tcs_kernel at tencent.com>
> Date:   Fri Sep 3 02:37:06 2021 +0000
> 
>     KVM: x86: Handle SRCU initialization failure during page track init
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=143e2b02b00000
> start commit:   78e709522d2c Merge tag 'for_linus' of git://git.kernel.org..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=2150ebd7e72fa695
> dashboard link: https://syzkaller.appspot.com/bug?extid=05017ad275a64a3246f8
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10b72895300000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14c42853300000
> 
> If the result looks correct, please mark the issue as fixed by replying with:
> 
> #syz fix: KVM: x86: Handle SRCU initialization failure during page track init

#syz fix: KVM: x86: Handle SRCU initialization failure during page track init