From: Catalin Marinas <catalin.marinas@arm.com>
To: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Andrey Konovalov <andreyknvl@google.com>,
linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com,
Andrew Morton <akpm@linux-foundation.org>,
Will Deacon <will@kernel.org>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2] arm64: Fix warning in mte_get_random_tag()
Date: Fri, 12 Feb 2021 10:54:59 +0000 [thread overview]
Message-ID: <20210212105458.GA7718@arm.com> (raw)
In-Reply-To: <20210211152208.23811-1-vincenzo.frascino@arm.com>
On Thu, Feb 11, 2021 at 03:22:08PM +0000, Vincenzo Frascino wrote:
> The simplification of mte_get_random_tag() caused the introduction of the
> warning below:
>
> In file included from arch/arm64/include/asm/kasan.h:9,
> from include/linux/kasan.h:16,
> from mm/kasan/common.c:14:
> mm/kasan/common.c: In function ‘mte_get_random_tag’:
> arch/arm64/include/asm/mte-kasan.h:45:9: warning: ‘addr’ is used
> uninitialized [-Wuninitialized]
> 45 | asm(__MTE_PREAMBLE "irg %0, %0"
> |
>
> Fix the warning using "=r" for the address in the asm inline.
>
> Fixes: c8f8de4c0887 ("arm64: kasan: simplify and inline MTE functions")
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Cc: Andrey Konovalov <andreyknvl@google.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
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prev parent reply other threads:[~2021-02-12 10:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-11 15:22 [PATCH v2] arm64: Fix warning in mte_get_random_tag() Vincenzo Frascino
2021-02-11 17:42 ` Andrey Konovalov
2021-02-12 10:54 ` Catalin Marinas [this message]
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