Comment 2 for bug 1777315

Oh no, this is a misunderstanding.

More Details:
use this script https://raw.githubusercontent.com/google/syzkaller/master/tools/create-image.sh create
 wheezy.img
than run:
qemu-system-x86_64 -m 2048 -smp 1 -net nic -net user,host=10.0.2.10,hostfwd=tcp::59199-:22 -display none -serial stdio -no-reboot -enable-kvm -hda /home/icy/linux-master/wheezy.img -snapshot -kernel /home/icy/linux-master/arch/x86/boot/bzImage -append "console=ttyS0 earlyprintk=serial oops=panic nmi_watchdog=panic panic_on_warn=1 panic=86400 ftrace_dump_on_oops=orig_cpu rodata=n vsyscall=native net.ifnames=0 biosdevname=0 kvm-intel.nested=1 kvm-intel.unrestricted_guest=1 kvm-intel.vmm_exclusive=1 kvm-intel.fasteoi=1 kvm-intel.ept=1 kvm-intel.flexpriority=1 kvm-intel.vpid=1 kvm-intel.emulate_invalid_guest_state=1 kvm-intel.eptad=1 kvm-intel.enable_shadow_vmcs=1 kvm-intel.pml=1 kvm-intel.enable_apicv=1 root=/dev/sda"

bzImage is obtained by compiling v4.17 kernel(I am not sure if it works in other kernel version).

than execute the program in the virtual machine: ./repro
qemu will crash, output innformation:
 qemu-system-x86_64: hw/ide/core.c:843: ide_dma_cb: Assertion `n * 512 == s->sg.size' failed.

this bug influences at least qemu-2.9.94 - qemu-2.12.0.