It's probably always a bug to end up here with a size of zero, but region_end becoming -1 is a sure way to run into confusing issues.
Just throw the towel in this case, so the user can make sense of the backtrace. Reported-by: Ben Pye # Matrix Signed-off-by: Ahmad Fatoum <[email protected]> --- arch/arm/cpu/flush_cacheable_pages.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/cpu/flush_cacheable_pages.h b/arch/arm/cpu/flush_cacheable_pages.h index a03e10810dc7..b8574d77cdef 100644 --- a/arch/arm/cpu/flush_cacheable_pages.h +++ b/arch/arm/cpu/flush_cacheable_pages.h @@ -28,6 +28,8 @@ static void flush_cacheable_pages(void *start, size_t size) size_t block_size; mmu_addr_t *ttb; + BUG_ON(!size); + region_start = PAGE_ALIGN_DOWN((ulong)start); region_end = PAGE_ALIGN(region_start + size) - 1; -- 2.47.3
