Re: general protection fault in show_timer

2017-12-18 Thread Eric Biggers
On Fri, Dec 15, 2017 at 05:40:15PM +0100, Thomas Gleixner wrote: > On Thu, 14 Dec 2017, Eric Biggers wrote: > > On Thu, Dec 14, 2017 at 04:34:12PM +0100, Thomas Gleixner wrote: > > > On Thu, 14 Dec 2017, Dmitry Vyukov wrote: > > > > On Thu, Dec 14, 2017 at 3:26 PM, Thomas Gleixner > > > > wrote:

Re: general protection fault in show_timer

2017-12-15 Thread Thomas Gleixner
On Thu, 14 Dec 2017, Eric Biggers wrote: > On Thu, Dec 14, 2017 at 04:34:12PM +0100, Thomas Gleixner wrote: > > On Thu, 14 Dec 2017, Dmitry Vyukov wrote: > > > On Thu, Dec 14, 2017 at 3:26 PM, Thomas Gleixner > > > wrote: > > > > On Tue, 12 Dec 2017, Greg KH wrote: > > > >> Did this ever go anywh

Re: general protection fault in show_timer

2017-12-14 Thread Eric Biggers
On Thu, Dec 14, 2017 at 04:34:12PM +0100, Thomas Gleixner wrote: > On Thu, 14 Dec 2017, Dmitry Vyukov wrote: > > On Thu, Dec 14, 2017 at 3:26 PM, Thomas Gleixner wrote: > > > On Tue, 12 Dec 2017, Greg KH wrote: > > >> Did this ever go anywhere? I don't see it in Linus's tree yet... > > > > > > I

Re: general protection fault in show_timer

2017-12-14 Thread Thomas Gleixner
On Thu, 14 Dec 2017, Dmitry Vyukov wrote: > On Thu, Dec 14, 2017 at 3:26 PM, Thomas Gleixner wrote: > > On Tue, 12 Dec 2017, Greg KH wrote: > >> Did this ever go anywhere? I don't see it in Linus's tree yet... > > > > I learned yesterday that syzboz is understuffed and cannot test patches, so > >

Re: general protection fault in show_timer

2017-12-14 Thread Dmitry Vyukov
On Thu, Dec 14, 2017 at 3:26 PM, Thomas Gleixner wrote: > On Tue, 12 Dec 2017, Greg KH wrote: > >> On Tue, Dec 05, 2017 at 11:58:07AM -0800, Kees Cook wrote: >> > On Thu, Nov 30, 2017 at 4:57 AM, Thomas Gleixner >> > wrote: >> > > On Thu, 30 Nov 2017, Alexey Dobriyan wrote: >> > > >> > >> [cc se

Re: general protection fault in show_timer

2017-12-14 Thread Thomas Gleixner
On Tue, 12 Dec 2017, Greg KH wrote: > On Tue, Dec 05, 2017 at 11:58:07AM -0800, Kees Cook wrote: > > On Thu, Nov 30, 2017 at 4:57 AM, Thomas Gleixner wrote: > > > On Thu, 30 Nov 2017, Alexey Dobriyan wrote: > > > > > >> [cc security@] > > >> 100% oops with interrupts disabled by nobody > > >> or

Re: general protection fault in show_timer

2017-12-12 Thread Greg KH
On Tue, Dec 05, 2017 at 11:58:07AM -0800, Kees Cook wrote: > On Thu, Nov 30, 2017 at 4:57 AM, Thomas Gleixner wrote: > > On Thu, 30 Nov 2017, Alexey Dobriyan wrote: > > > >> [cc security@] > >> 100% oops with interrupts disabled by nobody > >> or kernel memory read > >> [nods] > >> you named the b

Re: general protection fault in show_timer

2017-12-05 Thread Kees Cook
On Thu, Nov 30, 2017 at 4:57 AM, Thomas Gleixner wrote: > On Thu, 30 Nov 2017, Alexey Dobriyan wrote: > >> [cc security@] >> 100% oops with interrupts disabled by nobody >> or kernel memory read >> [nods] >> you named the bug already >> >> "notify" directly comes from userspace struct sigevent::si

Re: general protection fault in show_timer

2017-12-04 Thread Thomas Gleixner
On Sun, 3 Dec 2017, syzbot wrote: > syzkaller has found reproducer for the following crash on > 4131d5166185d0d75b5f1d4bf362a9e0bac05598 > git://git.cmpxchg.org/linux-mmots.git/master > compiler: gcc (GCC) 7.1.1 20170620 > .config is attached > Raw console output is attached. > C reproducer is att

Re: general protection fault in show_timer

2017-11-30 Thread Dmitry Vyukov
+syzbot back, please don't drop it, it's reading On Thu, Nov 30, 2017 at 1:20 PM, Alexey Dobriyan wrote: > [cc security@] > 100% oops with interrupts disabled by nobody > or kernel memory read > > > On 11/30/17, Dmitry Vyukov wrote: >> On Thu, Nov 30, 2017 at 12:31 PM, Dmitry Vyukov wrote: >>>

Re: general protection fault in show_timer

2017-11-30 Thread Thomas Gleixner
On Thu, 30 Nov 2017, Alexey Dobriyan wrote: > [cc security@] > 100% oops with interrupts disabled by nobody > or kernel memory read > [nods] > you named the bug already > > "notify" directly comes from userspace struct sigevent::sigev_notify > without adult supervision. > > Reproducer is timer_c

Re: general protection fault in show_timer

2017-11-30 Thread Alexey Dobriyan
[cc security@] 100% oops with interrupts disabled by nobody or kernel memory read On 11/30/17, Dmitry Vyukov wrote: > On Thu, Nov 30, 2017 at 12:31 PM, Dmitry Vyukov wrote: >> On Thu, Nov 30, 2017 at 12:08 PM, Alexey Dobriyan >> wrote: >>> On 11/30/17, syzbot >>> >>> wrote: Hello, >

Re: general protection fault in show_timer

2017-11-30 Thread Dmitry Vyukov
On Thu, Nov 30, 2017 at 12:31 PM, Dmitry Vyukov wrote: > On Thu, Nov 30, 2017 at 12:08 PM, Alexey Dobriyan wrote: >> On 11/30/17, syzbot >> >> wrote: >>> Hello, >>> >>> syzkaller hit the following crash on >>> 43570f0383d6d5879ae585e6c3cf027ba321546f >>> git://git.kernel.org/pub/scm/linux/kernel

Re: general protection fault in show_timer

2017-11-30 Thread Dmitry Vyukov
On Thu, Nov 30, 2017 at 12:08 PM, Alexey Dobriyan wrote: > On 11/30/17, syzbot > > wrote: >> Hello, >> >> syzkaller hit the following crash on >> 43570f0383d6d5879ae585e6c3cf027ba321546f >> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/master >> compiler: gcc (GCC) 7.1.1 201706

Re: general protection fault in show_timer

2017-11-30 Thread Alexey Dobriyan
On 11/30/17, syzbot wrote: > Hello, > > syzkaller hit the following crash on > 43570f0383d6d5879ae585e6c3cf027ba321546f > git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/master > compiler: gcc (GCC) 7.1.1 20170620 > .config is attached > Raw console output is attached. > > Unfortu