On Sun, Jan 27, 2013 at 04:46:29PM -0800, Wang Shilong wrote: > > Actually, it can be true --- if start_blk + count (which are both > > unsigned integers) overflows.... > Yeah,you are right.... > I am sorry,I miss the overflow condition... We added it because we saw a crash that was a caused by an overflow, if memory serves correctly. Or maybe it was a mysterious data or file system corruption that was incredibly painful to find. Fun trivia fact: the European Space Agency had the Ariane 5 rocket explode on its maiden flight due to a integer overflow bug. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
