From: Sascha Hauer <sha@pengutronix.de>
To: Ahmad Fatoum <a.fatoum@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH master 1/2] KASan: test_kasan: silence warning with newer GCC
Date: Tue, 13 Dec 2022 09:37:17 +0100 [thread overview]
Message-ID: <20221213083717.GO29728@pengutronix.de> (raw)
In-Reply-To: <20221212163907.2356192-1-a.fatoum@pengutronix.de>
On Mon, Dec 12, 2022 at 05:39:06PM +0100, Ahmad Fatoum wrote:
> Newer GCC will rightly complain about this being an out-of-bounds
> access. This is intended as the kasan command is meant to cause
> out-of-bounds accesses to test proper operation of KASan.
>
> Thus silence the warning for this specific instance.
>
> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
> ---
> lib/kasan/test_kasan.c | 2 ++
> 1 file changed, 2 insertions(+)
Applied, thanks
Sascha
>
> diff --git a/lib/kasan/test_kasan.c b/lib/kasan/test_kasan.c
> index d0ea91547711..14511cdb80bd 100644
> --- a/lib/kasan/test_kasan.c
> +++ b/lib/kasan/test_kasan.c
> @@ -290,6 +290,8 @@ static noinline void kasan_alloca_oob_left(void)
> char alloca_array[i];
> char *p = alloca_array - 1;
>
> + OPTIMIZER_HIDE_VAR(p);
> +
> pr_info("out-of-bounds to left on alloca\n");
> *(volatile char *)p;
> }
> --
> 2.30.2
>
>
>
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prev parent reply other threads:[~2022-12-13 8:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-12 16:39 Ahmad Fatoum
2022-12-12 16:39 ` [PATCH master 2/2] KASan: fix handling of devices with MMIO above SDRAM memory region Ahmad Fatoum
2022-12-13 8:37 ` Sascha Hauer [this message]
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