On Wed, Oct 27, 2010 at 06:51:12PM -0400, Chris Metcalf wrote: > > BTW, is everything in your pt_regs safe to modify? > > What an interesting observation. :-) In fact, it would be possible to > overwrite the privilege level (the ex1 register) from within the signal > handler and then return to run arbitrary code at kernel PL. I'll fix it. Then you need to be careful with that in your ptrace as well (POKEUSR and SETREGS). -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
