"H. Peter Anvin" <h...@zytor.com> writes: > Given that, I have to say I now seriously question the value of > finit_module(). The kernel can trivially discover if the pointed-to > memory area is a MAP_SHARED mmap() of a file descriptor and if so which > file descriptor... why can't we handle this behind the scenes?
It is a bit more indirect, but also in practice it's a bit trickier than that. We need to ensure the memory doesn't change underneath us and stays attached to that fd. I can easily see that code slipping and ending in an exploit. But that may be my irrational fear of the mm :) Cheers, Rusty. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
