repro for kvm gvisor

compile-kernel.sh

rm .config
make tinyconfig
make kvm_guest.config
make kvmconfig
./scripts/config \
        -e EARLY_PRINTK \
        -e 64BIT \
        -e BPF -d EMBEDDED -d EXPERT \
        -e INOTIFY_USER 

./scripts/config \
        -e VIRTIO -e VIRTIO_PCI -e VIRTIO_MMIO \
        -e NET -e NET_CORE -e NETDEVICES -e NETWORK_FILESYSTEMS \
        -e INET -e NET_9P -e NET_9P_VIRTIO -e 9P_FS \
        -e VIRTIO_NET -e VIRTIO_CONSOLE \
        -e DEVTMPFS -e SCSI_VIRTIO -e BINFMT_SCRIPT -e TMPFS \
        -e UNIX -e TTY -e VT -e UNIX98_PTYS -e WATCHDOG -e WATCHDOG_CORE \
        -e I6300ESB_WDT \
        -e BLOCK -e SCSI_LOWLEVEL -e SCSI -e SCSI_VIRTIO \
        -e BLK_DEV_SD -e BLK_DEV_INITRD \
        -e VIRTIO_BALLOON \
        -d CMDLINE_OVERRIDE \
        -d UEVENT_HELPER \
        -d EMBEDDED -d EXPERT \
        -d MODULE_SIG_FORCE \
        -e SMP

./scripts/config \
    -e CGROUPS -e BLK_CGROUP -e CGROUP_SCHED \
    -e CGROUP_PIDS -e CGROUP_RDMA -e CGROUP_FREEZER \
    -e CGROUP_DEVICE -e CGROUP_CPUACCT -e CGROUP_PERF \
    -e CGROUP_NET_PRIO -e CGROUP_NET_CLASSID \
    -e BLK_CGROUP_IOLATENCY -e BLK_CGROUP_IOCOST \
    -e MEMCG -e CPUSETS -e USER_NS \
    -e SYSVIPC -e SECCOMP \
    -e HUGETLBFS -e CGROUP_HUGETLB \
    -e MAGIC_SYSRQ \
    -e KVM_INTEL -e KVM_AMD -e KVM -e IA32_FEAT_CTL -e X86_LOCAL_APIC -e HIGH_RES_TIMERS

make olddefconfig
make bzImage -j16

repro.sh

#!/bin/sh

umount /sys/fs/cgroup/unified
for t in blkio 'cpu,cpuacct' cpuset devices freezer hugetlb memory 'net_cls,net_prio' perf_event pids rdma; do
mkdir /sys/fs/cgroup/$t
mount -t cgroup -o $t cgroup /sys/fs/cgroup/$t
done
ln -s /sys/fs/cgroup/cpu,cpuacct /sys/fs/cgroup/cpu
ln -s /sys/fs/cgroup/cpu,cpuacct /sys/fs/cgroup/cpuacct
ln -s /sys/fs/cgroup/net_cls,net_prio /sys/fs/cgroup/net_cls
ln -s /sys/fs/cgroup/net_cls,net_prio /sys/fs/cgroup/net_prio

echo '**** runsc --platform=kvm do echo hello world'
while [ 1 ]; do
	/home/marek/runsc --platform=kvm  do echo hello world
	S=$?
	echo "***** $S"
	if [ "$S" = "128" ]; then
		break
	fi
done

echo b > /proc/sysrq-trigger