Re: [PATCH 0/2] LoongArch: Make bounds-checking instructions useful

[Huacai Chen]

On Thu, Apr 20, 2023 at 5:38 PM WANG Xuerui <kernel@xxxxxxxxxx> wrote:
>
> On 2023/4/20 16:36, Huacai Chen wrote:
> > Hi, Xuerui,
> >
> > I hope V2 can be applied cleanly without the patch series "LoongArch:
> > Better backtraces", thanks.
>
> I believe it's already the case (just try; I've moved the BADV printing
> for BCE into the better backtraces series before sending this).
>
> I'm only waiting for comments from the other UAPI maintainers on the CC
> list.
You changed arch/loongarch/include/asm/kdebug.h, does it have
something to do with UAPI?
On the other hand, kprobe has dropped the notifier mechanism, so this
piece should be changed, I think.

+ /*
+ * notify the kprobe handlers, if instruction is likely to
+ * pertain to them.
+ */
+ if (notify_die(DIE_BOUNDS_CHECK, "Bounds check error", regs, 0,
+       current->thread.trap_nr, SIGSEGV) == NOTIFY_STOP)
+ goto out;

Huacai

>
> --
> WANG "xen0n" Xuerui
>
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>