On Thu, Feb 13, 2025 at 07:35:10PM +0200, Leon Romanovsky wrote: > Initially curr_base is 0xFF.....FF and curr_len is 0. curr base can't be so unaligned can it? > So if this "if ..." is skipped (not possible but static checkers don't know), > we will advance curr_len and curr_base + curr_len will overflow. > > I don't want to take original patch. Subtracting is no better, it will just randomly fail for low dma addrs instead of high. You need to call check_add_overflow() Jason
