linux-kernel - Re: [Linux-kernel-mentees][PATCH v2] packet: Fix undefined behavior in bit shift

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Message-Id: <20190627.092253.1878691006683087825.davem@davemloft.net>
Date:   Thu, 27 Jun 2019 09:22:53 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     skhan@...uxfoundation.org
Cc:     c0d1n61at3@...il.com,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Linux-kernel-mentees][PATCH v2] packet: Fix undefined
 behavior in bit shift

From: Shuah Khan <skhan@...uxfoundation.org>
Date: Wed, 26 Jun 2019 21:32:52 -0600

> On 6/26/19 9:25 PM, Jiunn Chang wrote:
>> Shifting signed 32-bit value by 31 bits is undefined.  Changing most
>> significant bit to unsigned.
>> Changes included in v2:
>>    - use subsystem specific subject lines
>>    - CC required mailing lists
>> 
> 
> These version change lines don't belong in the change log.

For networking changes I actually like the change lines to be in the
commit log.  So please don't stray people this way, thanks.