Error for which slots and RAM modules?

[honestvip]

The solution is to find a slot to catch

List of bit positions of a memory address to exclusive-or (XOR) to determine which slot (0 or 1) is used. This is useful if you know that the memory controller maps a particular address to a slot using this decoding scheme. If this parameter is specified and MemTest86 detects a memory error, the slot number will be calculated and displayed along with the faulting address. Each bit position specified is separated by a comma. For example,ADDR2SLBITS=3,4 will XOR bits 3,4 of the address to determine the slot.

[David (PassMark)]

While there are a few small exceptions, it generally isn't possible to know which slot had the error.

And with row hammer, it is often the case that is one stick is vulnerable, then they all are.