Re: [PATCH v2 3/3] iommu/virtio: Reject short event buffers
Will Deacon <[email protected]>
| Newsgroups | dev.linux.lists.iommu,dev.linux.lists.virtualization,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <amH-rdeANAtyXhDi@willie-the-truck> |
On Thu, Jul 23, 2026 at 09:54:09AM +0800, Weimin Xiong wrote: > From: Xiong Weimin <[email protected]> > > From: Xiong Weimin <[email protected]> > > viommu_event_handler() only rejects event buffers that are larger than > struct viommu_event. A short buffer is also invalid, but the handler > would still read evt->head and, for fault events, the rest of evt->fault. > > Require the used length to match the event buffer size before looking at > the event contents. > > Signed-off-by: Xiong Weimin <[email protected]> > --- > drivers/iommu/virtio-iommu.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) I don't know why you keep sending this without first responding to the feedback you already received: https://lore.kernel.org/all/20260709095518.GA1752964@myrica/ Will