> This patch fixes this.
> --- a/hw/display/cirrus_vga.c
> +++ b/hw/display/cirrus_vga.c
> @@ -644,7 +644,7 @@ static void cirrus_invalidate_region(CirrusVGAState * s,
> int off_begin,
> off_cur_end = ((off_cur + bytesperline - 1) & s->cirrus_addr_mask) +
> 1;
> assert(off_cur_
In the while loop of cirrus_invalidate_region() the 'off_begin'
increases every loop. It may be greater than 's->cirrus_addr_mask' thus
trigger the assert in the loop.
Following reproducer is provied in:
-->https://bugs.launchpad.net/qemu/+bug/1880189
qemu-system-i386 -M isapc,accel=qtest -vga c
