On 06/10/2018 03:12 PM, Thomas Huth wrote:
> Add a sanity check to fix the following crash:
>
> $ echo "Insane in the mainframe" > /tmp/test.txt
> $ s390x-softmmu/qemu-system-s390x -nographic -kernel /tmp/test.txt
> Segmentation fault (core dumped)
>
> Signed-off-by: Thomas Huth <th...@redhat.com>
Reviewed-by: Christian Borntraeger <borntrae...@de.ibm.com>
I think a similar problem exists for INITRD_PARM_START and INITRD_PARM_SIZE. No?
> ---
> hw/s390x/ipl.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c
> index 04245b5..9bb9b50 100644
> --- a/hw/s390x/ipl.c
> +++ b/hw/s390x/ipl.c
> @@ -168,7 +168,8 @@ static void s390_ipl_realize(DeviceState *dev, Error
> **errp)
> * we can not rely on the ELF entry point - it was 0x800 (the SALIPL
> * loader) and it won't work. For this case we force it to 0x10000,
> too.
> */
> - if (pentry == KERN_IMAGE_START || pentry == 0x800) {
> + if ((pentry == KERN_IMAGE_START || pentry == 0x800) &&
> + kernel_size > KERN_PARM_AREA + strlen(ipl->cmdline)) {
> ipl->start_addr = KERN_IMAGE_START;
> /* Overwrite parameters in the kernel image, which are "rom" */
> strcpy(rom_ptr(KERN_PARM_AREA), ipl->cmdline);
>
