Re: KASAN: out-of-bounds Read in kvm_arch_hardware_setup

From: Sean Christopherson
Date: Tue Jun 30 2020 - 02:13:01 EST


On Sat, Jun 27, 2020 at 01:01:13PM -0700, syzbot wrote:
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit: 7ae77150 Merge tag 'powerpc-5.8-1' of git://git.kernel.org..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=1654e385100000
> kernel config: https://syzkaller.appspot.com/x/.config?x=be4578b3f1083656
> dashboard link: https://syzkaller.appspot.com/bug?extid=e0240f9c36530bda7130
> compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81)
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15f3abc9100000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=131b7bb5100000

#syz dup: general protection fault in syscall_return_slowpath