lkml.org 
[lkml]   [2018]   [Aug]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: general protection fault in finish_task_switch (2)
On Tue, Aug 21, 2018 at 02:28:02PM -0700, syzbot wrote:
> syzbot has found a reproducer for the following crash on:
>
> HEAD commit: 778a33959a8a Merge tag 'please-pull-noboot' of git://git.k..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=14a5385a400000
> kernel config: https://syzkaller.appspot.com/x/.config?x=214e4990bd49329f
> dashboard link: https://syzkaller.appspot.com/bug?extid=1f56df64bfb3c29dde6f
> compiler: gcc (GCC) 8.0.1 20180413 (experimental)
> userspace arch: i386
> syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=13ffa561400000

FWIW the lack of whitespace between "repro:" and the URL makes it hard
to copy paste.

> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10023961400000


> RIP: 0010:__fire_sched_in_preempt_notifiers kernel/sched/core.c:2481

That repro thing does something dodgy with KVM, which then corrupts the
premption notifier thing. I'm sufficiently KVM clueless to not really
know where to start looking though..

\
 
 \ /
  Last update: 2018-08-22 11:09    [W:0.068 / U:0.932 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site