From: Catalin Marinas <catalin.marinas@arm.com>
To: Michal Orzel <michal.orzel@arm.com>
Cc: xen-devel@lists.xenproject.org,
Stefano Stabellini <sstabellini@kernel.org>,
Julien Grall <julien@xen.org>,
Bertrand Marquis <bertrand.marquis@arm.com>,
Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Subject: Re: [PATCH v2] xen/arm: Avoid overflow using MIDR_IMPLEMENTOR_MASK
Date: Thu, 5 May 2022 13:13:32 +0100 [thread overview]
Message-ID: <YnO/bIw/bG8hMNx+@arm.com> (raw)
In-Reply-To: <20220505115906.380416-1-michal.orzel@arm.com>
On Thu, May 05, 2022 at 01:59:06PM +0200, Michal Orzel wrote:
> Value of macro MIDR_IMPLEMENTOR_MASK exceeds the range of integer
> and can lead to overflow. Currently there is no issue as it is used
> in an expression implicitly casted to u32 in MIDR_IS_CPU_MODEL_RANGE.
> To avoid possible problems, fix the macro.
>
> Signed-off-by: Michal Orzel <michal.orzel@arm.com>
> Link: https://lore.kernel.org/r/20220426070603.56031-1-michal.orzel@arm.com
> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
> Origin: git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git (48e6f22e25a4)
> ---
> Changes since v1:
> - add Origin tag as the patch was merged in upstream arm64 linux tree
Note that there's always a risk that the commit Id will be changed
before it hits mainline (Linus' tree).
--
Catalin
next prev parent reply other threads:[~2022-05-05 12:13 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-05 11:59 [PATCH v2] xen/arm: Avoid overflow using MIDR_IMPLEMENTOR_MASK Michal Orzel
2022-05-05 12:13 ` Catalin Marinas [this message]
2022-05-10 6:49 ` Michal Orzel
2022-05-10 8:27 ` Julien Grall
2022-05-10 8:52 ` Michal Orzel
2022-05-10 8:55 ` Catalin Marinas
2022-05-16 17:20 ` Julien Grall
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