Rust nightly has started generating this section for RISC-V executables, place it at the start of the bss area.
@@ -66,7 +66,7 @@ SECTIONS
.bss :
{
_sbss = .;
- *(.bss .bss.*);
+ *(.sbss .sbss.* .bss .bss.*);
. = ALIGN(4);
_ebss = .;
} > REGION_BSS :virtual