linux-kernel - Re: [PATCH] ACPI/IORT: Fix off-by-one check in iort_dev_find_its

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Message-ID: <1d18ce4f-ecd5-4295-60ea-aff5a0d83cb2@huawei.com>
Date:   Tue, 23 Jul 2019 09:48:39 +0800
From:   Hanjun Guo <guohanjun@...wei.com>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        <linux-acpi@...r.kernel.org>
CC:     Dan Carpenter <dan.carpenter@...cle.com>,
        Will Deacon <will@...nel.org>,
        Sudeep Holla <sudeep.holla@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Robin Murphy <robin.murphy@....com>,
        LKML <linux-kernel@...r.kernel.org>,
        LAKML <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] ACPI/IORT: Fix off-by-one check in iort_dev_find_its_id()

On 2019/7/23 0:25, Lorenzo Pieralisi wrote:
> Static analysis identified that index comparison against ITS entries in
> iort_dev_find_its_id() is off by one.
> 
> Update the comparison condition and clarify the resulting error
> message.
> 
> Fixes: 4bf2efd26d76 ("ACPI: Add new IORT functions to support MSI domain handling")
> Link: https://lore.kernel.org/linux-arm-kernel/20190613065410.GB16334@mwanda/
> Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
> Cc: Dan Carpenter <dan.carpenter@...cle.com>
> Cc: Will Deacon <will@...nel.org>
> Cc: Hanjun Guo <guohanjun@...wei.com>
> Cc: Sudeep Holla <sudeep.holla@....com>
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Robin Murphy <robin.murphy@....com>

Reviewed-by: Hanjun Guo <guohanjun@...wei.com>