On Wed, Jul 20, 2016 at 05:46:58PM +0100, Marc Zyngier wrote: > From 0d120f95b3348e1946d8a789c7147f316c27ea6b Mon Sep 17 00:00:00 2001 > From: Marc Zyngier <marc.zyng...@arm.com> > Date: Wed, 20 Jul 2016 17:36:42 +0100 > Subject: [PATCH] arm64: kprobes: Fix overflow when saving stack > > The MIN_STACK_SIZE macro tries evaluate how much stack space needs > to be saved in the jprobes_stack array, sized at 128 bytes. > > When using the IRQ stack, said macro can happily return up to > IRQ_STACK_SIZE, which is 16kB. Mayhem follows. > > This patch fixes things by getting rid of the crazy macro and > limiting the copy to be at most the size of the jprobes_stack > array, no matter which stack we're on. > > Signed-off-by: Marc Zyngier <marc.zyng...@arm.com>
Applied to the kprobes branch. Thanks. (I can't yet tell whether kprobes will make into 4.8; I need to run some more tests before deciding) -- Catalin
