linux-kernel - Re: [bzImage64_load] BUG: KASAN: stack-out-of-bounds in deref_stack

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Date:   Tue, 7 Nov 2017 08:32:19 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Fengguang Wu <fengguang.wu@...el.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     "the arch/x86 maintainers" <x86@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Thiago Jung Bauermann <bauerman@...ux.vnet.ibm.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [bzImage64_load] BUG: KASAN: stack-out-of-bounds in deref_stack_reg+0xb5/0x11a

On Tue, Nov 7, 2017 at 1:32 AM, Fengguang Wu <fengguang.wu@...el.com> wrote:
>
> [    7.795097] Kprobe smoke test: started
> [    7.807563] ==================================================================
> [    7.808007] BUG: KASAN: stack-out-of-bounds in deref_stack_reg+0xb5/0x11a

Ok, this is apparently with a new enough gcc to make it valid: gcc
version 6.2.0.

Adding Josh to the list of people, since it's in the unwinder. Josh,
I'll forward the original report with full dmesg and config in
private.

               Linus