Re: mm: fault in __do_fault

2017-03-02 Thread Dmitry Vyukov
On Tue, Feb 28, 2017 at 4:42 PM, Andrea Arcangeli wrote: > Hello Dmitry, > > On Tue, Feb 28, 2017 at 03:04:53PM +0100, Dmitry Vyukov wrote: >> Hello, >> >> The following program triggers GPF in __do_fault: >> https://gist.githubusercontent.com/dvyukov/27345737fca18d92ef761e7fa08aec9b/raw/d99d02511

Re: mm: fault in __do_fault

2017-02-28 Thread Kirill A. Shutemov
On Tue, Feb 28, 2017 at 03:04:53PM +0100, Dmitry Vyukov wrote: > Hello, > > The following program triggers GPF in __do_fault: > https://gist.githubusercontent.com/dvyukov/27345737fca18d92ef761e7fa08aec9b/raw/d99d02511d0bf9a8d6f6bd9c79d373a26924e974/gistfile1.txt > > general protection fault:

Re: mm: fault in __do_fault

2017-02-28 Thread Andrea Arcangeli
On Tue, Feb 28, 2017 at 06:32:20PM +0300, Kirill A. Shutemov wrote: > Andrea, does it look okay for you? > > diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c > index 625b7285a37b..56f61f1a1dc1 100644 > --- a/fs/userfaultfd.c > +++ b/fs/userfaultfd.c > @@ -489,7 +489,7 @@ int handle_userfault(struc

Re: mm: fault in __do_fault

2017-02-28 Thread Andrea Arcangeli
Hello Dmitry, On Tue, Feb 28, 2017 at 03:04:53PM +0100, Dmitry Vyukov wrote: > Hello, > > The following program triggers GPF in __do_fault: > https://gist.githubusercontent.com/dvyukov/27345737fca18d92ef761e7fa08aec9b/raw/d99d02511d0bf9a8d6f6bd9c79d373a26924e974/gistfile1.txt Can you verify this

mm: fault in __do_fault

2017-02-28 Thread Dmitry Vyukov
Hello, The following program triggers GPF in __do_fault: https://gist.githubusercontent.com/dvyukov/27345737fca18d92ef761e7fa08aec9b/raw/d99d02511d0bf9a8d6f6bd9c79d373a26924e974/gistfile1.txt general protection fault: [#1] SMP KASAN Modules linked in: CPU: 3 PID: 2955 Comm: a.out Not tainted