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Date:   Tue, 18 Oct 2016 14:25:25 -0400 (EDT)
From:   David Miller <>
Subject: Re: [PATCH] ipv6: fix signedness of tmp_prefered_lft underflow

From: Jiri Bohac <>
Date: Tue, 18 Oct 2016 17:01:54 +0200

> Commit 76506a986dc31394fd1f2741db037d29c7e57843 (IPv6: fix
> DESYNC_FACTOR) introduced a buggy check for underflow of
> tmp_prefered_lft. tmp_prefered_lft is unsigned, so the condition
> is always false.
> Signed-off-by: Jiri Bohac <>
> Reported-by: Julia Lawall <>
> Fixes: 76506a986dc3 ("IPv6: fix DESYNC_FACTOR")

Does the check make any sense at all?  I'd say just remove it.

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