Symptom

An affected device will display a slew of the following messages: %IOSXE-3-PLATFORM: R0/0: kernel: DMA: Out of SW-IOMMU space for 65536 bytes at device

Conditions

Writing memory ("wr mem") is known to trigger this issue.

Workaround

At this time, there is no known workaround for this issue.

Further Problem Description