Re: general protection fault in vmx_vcpu_run (2)

2021-02-25 Thread Sean Christopherson
On Thu, Feb 25, 2021, Dmitry Vyukov wrote: > On Wed, Feb 24, 2021 at 7:08 PM 'Sean Christopherson' via > syzkaller-bugs wrote: > > > > On Wed, Feb 24, 2021, Borislav Petkov wrote: > > > Hi Dmitry, > > > > > > On Wed, Feb 24, 2021 at 06:12:57PM +0100, Dmitry Vyukov wrote: > > > > Looking at the bis

Re: general protection fault in vmx_vcpu_run (2)

2021-02-25 Thread Dmitry Vyukov
On Wed, Feb 24, 2021 at 7:08 PM 'Sean Christopherson' via syzkaller-bugs wrote: > > On Wed, Feb 24, 2021, Borislav Petkov wrote: > > Hi Dmitry, > > > > On Wed, Feb 24, 2021 at 06:12:57PM +0100, Dmitry Vyukov wrote: > > > Looking at the bisection log, the bisection was distracted by something > >

Re: general protection fault in vmx_vcpu_run (2)

2021-02-25 Thread Dmitry Vyukov
On Wed, Feb 24, 2021 at 6:49 PM Borislav Petkov wrote: > > Hi Dmitry, > > On Wed, Feb 24, 2021 at 06:12:57PM +0100, Dmitry Vyukov wrote: > > Looking at the bisection log, the bisection was distracted by something > > else. > > Meaning the bisection result: > > 167dcfc08b0b ("x86/mm: Increase pgt_

Re: general protection fault in vmx_vcpu_run (2)

2021-02-24 Thread Sean Christopherson
On Wed, Feb 24, 2021, Borislav Petkov wrote: > Hi Dmitry, > > On Wed, Feb 24, 2021 at 06:12:57PM +0100, Dmitry Vyukov wrote: > > Looking at the bisection log, the bisection was distracted by something > > else. > > Meaning the bisection result: > > 167dcfc08b0b ("x86/mm: Increase pgt_buf size f

Re: general protection fault in vmx_vcpu_run (2)

2021-02-24 Thread Borislav Petkov
Hi Dmitry, On Wed, Feb 24, 2021 at 06:12:57PM +0100, Dmitry Vyukov wrote: > Looking at the bisection log, the bisection was distracted by something else. Meaning the bisection result: 167dcfc08b0b ("x86/mm: Increase pgt_buf size for 5-level page tables") is bogus? > You can always find the ori

Re: general protection fault in vmx_vcpu_run (2)

2021-02-24 Thread Dmitry Vyukov
On Wed, Feb 24, 2021 at 1:27 PM Borislav Petkov wrote: > > On Tue, Feb 23, 2021 at 03:17:07PM -0800, syzbot wrote: > > syzbot has bisected this issue to: > > > > commit 167dcfc08b0b1f964ea95d410aa496fd78adf475 > > Author: Lorenzo Stoakes > > Date: Tue Dec 15 20:56:41 2020 + > > > > x86/

Re: general protection fault in vmx_vcpu_run (2)

2021-02-24 Thread Borislav Petkov
On Tue, Feb 23, 2021 at 03:17:07PM -0800, syzbot wrote: > syzbot has bisected this issue to: > > commit 167dcfc08b0b1f964ea95d410aa496fd78adf475 > Author: Lorenzo Stoakes > Date: Tue Dec 15 20:56:41 2020 + > > x86/mm: Increase pgt_buf size for 5-level page tables > > bisection log: h

Re: general protection fault in vmx_vcpu_run (2)

2021-02-23 Thread syzbot
syzbot has bisected this issue to: commit 167dcfc08b0b1f964ea95d410aa496fd78adf475 Author: Lorenzo Stoakes Date: Tue Dec 15 20:56:41 2020 + x86/mm: Increase pgt_buf size for 5-level page tables bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13fe3ea8d0 start commit:

Re: general protection fault in vmx_vcpu_run (2)

2021-02-23 Thread syzbot
syzbot has found a reproducer for the following issue on: HEAD commit:a99163e9 Merge tag 'devicetree-for-5.12' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15cd357f50 kernel config: https://syzkaller.appspot.com/x/.config?x=4911607

general protection fault in vmx_vcpu_run (2)

2021-02-05 Thread syzbot
Hello, syzbot found the following issue on: HEAD commit:aa2b8820 Add linux-next specific files for 20210205 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=13d27b54d0 kernel config: https://syzkaller.appspot.com/x/.config?x=15c41e44a64aa1a5 dashboard