linux-kernel - Re: linux-next boot error: general protection fault in __x64_sys

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Message-ID: <alpine.DEB.2.21.1911141601040.2507@nanos.tec.linutronix.de>
Date:   Thu, 14 Nov 2019 16:02:09 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Dmitry Vyukov <dvyukov@...gle.com>
cc:     syzbot <syzbot+dccce9b26ba09ca49966@...kaller.appspotmail.com>,
        John Stultz <john.stultz@...aro.org>,
        LKML <linux-kernel@...r.kernel.org>, sboyd@...nel.org,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        the arch/x86 maintainers <x86@...nel.org>,
        kasan-dev <kasan-dev@...glegroups.com>,
        Jann Horn <jannh@...gle.com>
Subject: Re: linux-next boot error: general protection fault in
 __x64_sys_settimeofday

On Thu, 14 Nov 2019, Dmitry Vyukov wrote:
> On Thu, Nov 14, 2019 at 1:35 PM Thomas Gleixner <tglx@...utronix.de> wrote:
> 
> Looks like a plain user memory access:
> 
> SYSCALL_DEFINE2(settimeofday, struct __kernel_old_timeval __user *, tv,
> struct timezone __user *, tz)
> {
> ....
> if (tv->tv_usec > USEC_PER_SEC)  // <==== HERE
> return -EINVAL;

Bah, I looked at a stale next ....