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Re: [PATCH] arm64: cpuinfo: Missing NULL terminator in compat_hwcap_str

From Julien Grall <julien.grall@arm.com>
Newsgroups linux.kernel
Subject Re: [PATCH] arm64: cpuinfo: Missing NULL terminator in compat_hwcap_str
Date 2016-05-11 11:40 +0200
Message-ID <rxyMz-5vM-37@gated-at.bofh.it> (permalink)
References <rxh90-4bJ-7@gated-at.bofh.it> <rxhiG-4hZ-15@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Hi Mark,

On 10/05/2016 15:54, Mark Rutland wrote:
> On Tue, May 10, 2016 at 03:40:31PM +0100, Julien Grall wrote:
>> The loop that browses the array compat_hwcap_str will stop when a NULL
>> is encountered, however NULL is missing at the end of array. This will
>> result to overrun until one NULL is found somewhere in the memory.
>
> Probably worth adding something like:
>
> Note for backporting: commit 12d11817eaafa414 ("arm64: Move
> /proc/cpuinfo handling code") moved this code. Prior to that commit, the
> same change should be made in arch/arm64/kernel/setup.c.

I can resend the patch with this changes.

>
>> Fixes: 44b82b7700d0 "arm64: Fix up /proc/cpuinfo"
>> Signed-off-by: Julien Grall <julien.grall@arm.com>
>> Cc: stable@vger.kernel.org
>>
>> ---
>>
>> Cc: Mark Rutland <mark.rutland@arm.com>
>> Cc: Suzuki K. Poulose <suzuki.poulose@arm.com>
>> ---
>
> Wierd middle '---' between the Cc lines above.

It is an habit I have with Xen-devel as the Cc are not necessary after 
it has been committed.

>
> Otherwise:
>
> Reviewed-by: Mark Rutland <mark.rutland@arm.com>

Thank you!

Regards,

-- 
Julien Grall

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Thread

[PATCH] arm64: cpuinfo: Missing NULL terminator in compat_hwcap_str Julien Grall <julien.grall@arm.com> - 2016-05-10 16:50 +0200
  Re: [PATCH] arm64: cpuinfo: Missing NULL terminator in  compat_hwcap_str Mark Rutland <mark.rutland@arm.com> - 2016-05-10 17:00 +0200
    Re: [PATCH] arm64: cpuinfo: Missing NULL terminator in  compat_hwcap_str Julien Grall <julien.grall@arm.com> - 2016-05-11 11:40 +0200
      Re: [PATCH] arm64: cpuinfo: Missing NULL terminator in  compat_hwcap_str Will Deacon <will.deacon@arm.com> - 2016-05-11 11:50 +0200

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