Re: kern/52676: Kernel assert "pmap->pm_obj[i].uo_npages == 0" on 8.99.3 [syzkaller]

[Utkarsh Anand <uanand009%gmail.com@localhost>]

The following reply was made to PR kern/52676; it has been noted by GNATS.

From: Utkarsh Anand <uanand009%gmail.com@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/52676: Kernel assert "pmap->pm_obj[i].uo_npages == 0" on
 8.99.3 [syzkaller]
Date: Tue, 31 Oct 2017 08:15:06 +0530

 I reproduced the result on Virtualbox using the same image that Dmitry is using.
 You can access some important information from:
 http://ftp.netbsd.org/pub/NetBSD/misc/utkarsh009/syzkaller/NetBSD_crash.tar.gz
 After crashing 2-3 times, it completely crippled the VM and it
 couldn't even boot.
 
 Interestingly, it doesn't crash this VM:
 utkarsh# uname -a
 NetBSD utkarsh.localhost 7.99.71 NetBSD 7.99.71 (XEN3_DOM0) #1: Sat
 Jun 10 13:41:43 IST 2017
 root@utkarsh-GP62-6QE:/extra/obj/sys/arch/amd64/compile/XEN3_DOM0
 amd64
 Regards,
 Utkarsh Anand