REG_L is wrong, because thread_info.cpu is 32-bit, not xlen-bit wide. The struct currently has a hole after cpu, so little endian accesses seemed fine.
Fixes: be97d0db5f44 ("riscv: VMAP_STACK overflow detection thread-safe") Cc: stable@vger.kernel.org Reviewed-by: Alexandre Ghiti alexghiti@rivosinc.com Signed-off-by: Radim Krčmář rkrcmar@ventanamicro.com --- v2: split for stable [Alex] --- arch/riscv/include/asm/asm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/include/asm/asm.h b/arch/riscv/include/asm/asm.h index a8a2af6dfe9d..2a16e88e13de 100644 --- a/arch/riscv/include/asm/asm.h +++ b/arch/riscv/include/asm/asm.h @@ -91,7 +91,7 @@ #endif
.macro asm_per_cpu dst sym tmp - REG_L \tmp, TASK_TI_CPU_NUM(tp) + lw \tmp, TASK_TI_CPU_NUM(tp) slli \tmp, \tmp, PER_CPU_OFFSET_SHIFT la \dst, __per_cpu_offset add \dst, \dst, \tmp