Re: [Linux-kernel-mentees][PATCH v2] packet: Fix undefined behavior in bit shift
From: Alexei Starovoitov <hidden>
Date: 2019-06-27 17:06:00
Also in:
linux-kernel-mentees, lkml
From: Alexei Starovoitov <hidden>
Date: 2019-06-27 17:06:00
Also in:
linux-kernel-mentees, lkml
On Thu, Jun 27, 2019 at 9:54 AM Shuah Khan [off-list ref] wrote:
On 6/27/19 10:22 AM, David Miller wrote:quoted
From: Shuah Khan <skhan@linuxfoundation.org> Date: Wed, 26 Jun 2019 21:32:52 -0600quoted
On 6/26/19 9:25 PM, Jiunn Chang wrote:quoted
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 listsThese 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.As a general rule, please don't include change lines in the commit log. For networking changes that get sent to David and netdev, as David points out here, he likes them in the commit log, please include them in the commit log. I am working on FAQ (Frequently Answered Questions) section for mentees. I will add this to it.
Same for bpf trees. We prefer developers put as much as info as possible into commit logs and cover letters. Explanation of v1->v2->v3 differences is invaluable not only at the point of code review, but in the future.