[gfv]

There are always bugs in silicon, just like there are bugs in software. They mostly show up under "a highly specific and detailed set of internal timing conditions". There are 40 documented erratas on EPYC 7002s alone; there are 35 in the 13gen Intel CPUs, including, curiously, RPL038, "Processor Exiting Package C6 or C8 May Hang". Mobile ARM chip manufacturers are notoriously bad at documenting their bugs, so who knows how many they have.

This one is interesting because its preconditions are so trivial, and it will affect many more people than usual.