From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
Subject: Re: [PATCH] locking/lockdep: Fix UBSAN warnings
Date: Wed, 12 Jun 2019 09:34:25 +0200
Message-ID: <20190612073425.GD3436@hirez.programming.kicks-ass.net>
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On Wed, Jun 12, 2019 at 01:49:04PM +0800, Kobe Wu wrote:
> Fix complaints from UBSAN about signed integer overflow.
> 
> ========================================================================
> UBSAN: Undefined behaviour in kernel/locking/lockdep.c:2998:3
> signed integer overflow:

I don't mind the patch, but this is an UBSAN bug and cannot therefore be
a reason.