> The i386 version of the put_user(x, ptr) macro doesn't do
> wp_works_ok- checking. Also many drivers call put_user() without
> calling verify_area() before. Doesn't this lead to corruption with
> cow pages on a real i386 (wp doesn't work) ?
There are known races with real i386 and newer kernels, and same with
clone(). If it is easily fixable, it should be fixed...
Pavel
PS: There's way to crash cpu from userspace on real i386 :-(.
-- I'm pavel@ucw.cz. "In my country we have almost anarchy and I don't care." Panos Katsaloulis describing me w.r.t. patents me at discuss@linmodems.org- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/