Am 15.07.2019 um 13:24 hat Alexander Popov geschrieben: > On 05.07.2019 17:07, Alexander Popov wrote: > > This assertion was introduced in the commit a718978ed58a in July 2015. > > It implies that the size of successful DMA transfers handled in > > ide_dma_cb() should be multiple of 512 (the size of a sector). > > > > But guest systems can initiate DMA transfers that don't fit this > > requirement. Let's improve the assertion to prevent qemu DoS from quests. > > Hello! > > Just a friendly ping. > > Could you have a look at this patch?
John, I think this is for you. I haven't reviewed this yet, but if we put an assertion there that the request is aligned, we probably rely on this fact somewhere in the code. So I suspect that just changing the assertion without changing other code, too, might not be enough. Kevin
