xemu crashes upon idling for a period of time

[MasonT8198]

Bug Description

https://xemu.app/titles/54510018/#The-Punisher (DMA OOB)

When Xemu sits, (I was in dash 5960 at the time), if you wait for a while it'll crash with this assertion.

xemu: ../hw/xbox/nv2a/user.c:30: user_read: Assertion channel_id < NV2A_NUM_CHANNELS failed.
or
xemu: ../hw/xbox/nv2a/pfifo.c:296: pfifo_run_pusher: Assertion `false' failed.

I also did it with the file selector open, crashed out of the file selector menu as well.

Steps to reproduce this issue:

1. Open xemu on dash 5960 (presumably any other dash as well) and just leave it open.
2. Open File Selector/Picker and let it sit on that for a period of time

Expected Behavior

1.) In Theory, I should be able to do this for an extended period of time and it do nothing, it should just idle normally.

Version

• Version: v0.5.1-7105-g56a47b0e58

System Information

Field	Value
OS	(...)
CPU	(...)
Graphics Device	(...)
Graphics Driver	(...)

Additional Context

I would appreciate if anyone here who has experienced this issue please give your information on how this happened, it is useful for the development of the emulator to know what we can about the issue.

[abaire]

In case it continues to move, the context for the pfifo assert is:

        if (dma_get_v >= dma_len) {
            assert(false);
            SET_MASK(*dma_state, NV_PFIFO_CACHE1_DMA_STATE_ERROR,
                     NV_PFIFO_CACHE1_DMA_STATE_ERROR_PROTECTION);
            break;
        }