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The functionality is perhaps >>>> underspecified in the AMD manual. >>> >>> TBH, I don't have a reproducer yet. Just LLM stumbled upon this while >>> I was investigating another memory corruption issue [1]. >>> >>> [1] >>> https://lore.kernel.org/linux-mm/arY1Wq6R9OY20ans@pcnci.linuxbox.cz/#t >> >> What hardware are you running on? >> >> That looks like the Zen5 issue, for which you want either the latest >> microcode out of linux-firmware and/or >> https://lore.kernel.org/r/20261002211617.1001617-1-bp@kernel.org >> >> TCE is a no-op in Zen1 and later, so unless you're on older hardware, it >> won't be that. > > Just to clarify ... these are two separate issues. > > I mentioned [1] only to explain how this came up while investigating > something else. I'm not claiming that TCE caused the corruption reported > there :)  Please can you answer the question.  Which CPU are you seeing this on? ~Andrew