syzbot suspects this issue was fixed by commit:
commit eb7511bf9182292ef1df1082d23039e856d1ddfb
Author: Haimin Zhang
Date: Fri Sep 3 02:37:06 2021 +
KVM: x86: Handle SRCU initialization failure during page track init
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=143e2b0
syzbot has found a reproducer for the following issue on:
HEAD commit:78e709522d2c Merge tag 'for_linus' of git://git.kernel.org..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=16131d2b30
kernel config: https://syzkaller.appspot.com/x/.config?x=2150ebd