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..
