On (Wed) 29 Oct 2014 [17:32:27], Marc-André Lureau wrote:
> It seems "name" is not mandatory, and the following command line (based
> on one generated by current libvirt) will crash qemu at start:
>
> qemu-system-x86_64 \
> -device virtio-serial-pci \
> -device virtserialport,name=foo \
> -device virtconsole
>
> Program received signal SIGSEGV, Segmentation fault.
> __strcmp_ssse3 () at ../sysdeps/x86_64/strcmp.S:210
> 210 movlpd (%rsi), %xmm2
> Missing separate debuginfos, use: debuginfo-install
> python-libs-2.7.5-13.fc20.x86_64
> (gdb) bt
> #0 __strcmp_ssse3 () at ../sysdeps/x86_64/strcmp.S:210
> #1 0x000055555566bdc6 in find_port_by_name (name=0x0) at
> /home/elmarco/src/qemu/hw/char/virtio-serial-bus.c:67
Oops, I wonder how this went unnoticed so far.
Reviewed-by: Amit Shah <amit.s...@redhat.com>
> ---
> hw/char/virtio-serial-bus.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/hw/char/virtio-serial-bus.c b/hw/char/virtio-serial-bus.c
> index 3931085..f16452e 100644
> --- a/hw/char/virtio-serial-bus.c
> +++ b/hw/char/virtio-serial-bus.c
> @@ -871,7 +871,7 @@ static void virtser_port_device_realize(DeviceState *dev,
> Error **errp)
> return;
> }
>
> - if (find_port_by_name(port->name)) {
> + if (port->name != NULL && find_port_by_name(port->name)) {
btw the != NULL could be safely dropped w/o altering the meaning.
Thanks,
Amit
