https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104688
--- Comment #32 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Segher Boessenkool from comment #31) > Yes, there was a user who incorrectly used memcpy on non-memory memory. >From what I remember (it was also reported about aarch64 at one point too), one of the graphics libraries would call memcpy from normal memory to GPU Memory (over PCIe) and memcpy will sometimes use unaligned accesses which causes a fault to the GPU memory.
