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From: Arnd Bergmann <arnd@arndb.de>
To: Naresh Kamboju <naresh.kamboju@linaro.org>
Cc: Linux ARM <linux-arm-kernel@lists.infradead.org>,
	 open list <linux-kernel@vger.kernel.org>,
	regressions@lists.linux.dev,  lkft-triage@lists.linaro.org,
	Catalin Marinas <catalin.marinas@arm.com>,
	 Will Deacon <will@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	 John Donnelly <john.p.donnelly@oracle.com>,
	Huacai Chen <chenhuacai@kernel.org>,
	 Bjorn Andersson <bjorn.andersson@linaro.org>,
	 Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	David Hildenbrand <david@redhat.com>,
	 "Guilherme G. Piccoli" <gpiccoli@igalia.com>,
	Zhen Lei <thunder.leizhen@huawei.com>,
	 Anshuman Khandual <anshuman.khandual@arm.com>,
	Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: Re: gcc-12: build errors: arch/arm64/kernel/setup.c:225:56: warning: array subscript -1 is outside array bounds of 'char[]' [-Warray-bounds]
Date: Fri, 3 Jun 2022 09:40:07 +0200	[thread overview]
Message-ID: <CAK8P3a3QKWxqGore3+_DJnWo7bJgvDhkZjtkyg5EUg4_D=mE2w@mail.gmail.com> (raw)
In-Reply-To: <CA+G9fYts-KH-R5EkBpz2u6H_Cx6YTXus1JKJS6yBxGhb0O2qQQ@mail.gmail.com>

On Fri, Jun 3, 2022 at 4:03 AM Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
>     inlined from 'setup_arch' at arch/arm64/kernel/setup.c:350:2:
> arch/arm64/kernel/setup.c:225:56: warning: array subscript -1 is
> outside array bounds of 'char[]' [-Warray-bounds]
>   225 |         kernel_code.end     = __pa_symbol(__init_begin - 1);
>

Is this the only warning of this type that you get for arm64?

I think the easy fix would be to reword this line to

       kernel_code.end     = __pa_symbol(__init_begin) - 1;


        Arnd

WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: Naresh Kamboju <naresh.kamboju@linaro.org>
Cc: Linux ARM <linux-arm-kernel@lists.infradead.org>,
	 open list <linux-kernel@vger.kernel.org>,
	regressions@lists.linux.dev,  lkft-triage@lists.linaro.org,
	Catalin Marinas <catalin.marinas@arm.com>,
	 Will Deacon <will@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	 John Donnelly <john.p.donnelly@oracle.com>,
	Huacai Chen <chenhuacai@kernel.org>,
	 Bjorn Andersson <bjorn.andersson@linaro.org>,
	 Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	David Hildenbrand <david@redhat.com>,
	 "Guilherme G. Piccoli" <gpiccoli@igalia.com>,
	Zhen Lei <thunder.leizhen@huawei.com>,
	 Anshuman Khandual <anshuman.khandual@arm.com>,
	Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: Re: gcc-12: build errors: arch/arm64/kernel/setup.c:225:56: warning: array subscript -1 is outside array bounds of 'char[]' [-Warray-bounds]
Date: Fri, 3 Jun 2022 09:40:07 +0200	[thread overview]
Message-ID: <CAK8P3a3QKWxqGore3+_DJnWo7bJgvDhkZjtkyg5EUg4_D=mE2w@mail.gmail.com> (raw)
In-Reply-To: <CA+G9fYts-KH-R5EkBpz2u6H_Cx6YTXus1JKJS6yBxGhb0O2qQQ@mail.gmail.com>

On Fri, Jun 3, 2022 at 4:03 AM Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
>     inlined from 'setup_arch' at arch/arm64/kernel/setup.c:350:2:
> arch/arm64/kernel/setup.c:225:56: warning: array subscript -1 is
> outside array bounds of 'char[]' [-Warray-bounds]
>   225 |         kernel_code.end     = __pa_symbol(__init_begin - 1);
>

Is this the only warning of this type that you get for arm64?

I think the easy fix would be to reword this line to

       kernel_code.end     = __pa_symbol(__init_begin) - 1;


        Arnd

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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2022-06-03  7:40 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-03  2:03 gcc-12: build errors: arch/arm64/kernel/setup.c:225:56: warning: array subscript -1 is outside array bounds of 'char[]' [-Warray-bounds] Naresh Kamboju
2022-06-03  2:03 ` Naresh Kamboju
2022-06-03  7:40 ` Arnd Bergmann [this message]
2022-06-03  7:40   ` Arnd Bergmann
2022-06-06  9:01   ` Maxime Ripard
2022-06-06  9:01     ` Maxime Ripard
2022-06-06  9:41   ` Mark Rutland
2022-06-06  9:41     ` Mark Rutland
2022-06-08  6:54     ` Arnd Bergmann
2022-06-08  6:54       ` Arnd Bergmann

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