From: Max Filippov <jcmvbkbc@gmail.com>
To: Kees Cook <keescook@chromium.org>
Cc: Chris Zankel <chris@zankel.net>,
"open list:TENSILICA XTENSA PORT (xtensa)"
<linux-xtensa@linux-xtensa.org>,
linux-hardening@vger.kernel.org
Subject: Re: How large is the xtensa pt_regs::areg array supposed to be?
Date: Sat, 5 Mar 2022 12:43:23 -0800 [thread overview]
Message-ID: <CAMo8BfKO-ysOrYFGpZNsorZ-zyMWY5CObC1Oie0ubuXVF=ZCbg@mail.gmail.com> (raw)
In-Reply-To: <202202021501.DA6594BFC@keescook>
Hi Kees,
On Wed, Feb 2, 2022 at 3:03 PM Kees Cook <keescook@chromium.org> wrote:
> When building with -Warray-bounds, I see this:
>
> In file included from ./include/linux/uaccess.h:11,
> from ./include/linux/sched/task.h:11,
> from arch/xtensa/kernel/process.c:21:
> arch/xtensa/kernel/process.c: In function 'copy_thread':
> arch/xtensa/kernel/process.c:262:52: warning: array subscript 53 is above array bounds of 'long unsigned int[16]' [-Warray-bounds]
I tried to reproduce this by building with -Warray-bounds added to
KBUILD_CFLAGS but couldn't get neither gcc-11 nor the current
gcc trunk to issue this warning. How did you get it?
--
Thanks.
-- Max
next prev parent reply other threads:[~2022-03-05 20:43 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-02 23:03 How large is the xtensa pt_regs::areg array supposed to be? Kees Cook
2022-02-03 21:13 ` Max Filippov
2022-02-03 21:56 ` Kees Cook
2022-02-04 0:05 ` Max Filippov
2022-03-05 20:43 ` Max Filippov [this message]
2022-03-06 1:50 ` Max Filippov
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