linux-kernel - linux-next: build warning after merge of the rcu tree

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Date:   Thu, 12 Dec 2019 16:06:22 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     "Paul E. McKenney" <paulmck@...nel.org>
Cc:     Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>
Subject: linux-next: build warning after merge of the rcu tree

Hi all,

After merging the rcu (I think) tree, today's linux-next build (x86_64
allnoconfig) produced this warning:

kernel/time/timer.c: In function 'schedule_timeout':
kernel/time/timer.c:969:20: warning: 'timer.expires' may be used uninitialized in this function [-Wmaybe-uninitialized]
  969 |   long diff = timer->expires - expires;
      |               ~~~~~^~~~~~~~~

Introduced by (bisected to) commit

  c4127fce1d02 ("timer: Use hlist_unhashed_lockless() in timer_pending()")

x86_64-linux-gnu-gcc (Debian 9.2.1-21) 9.2.1 20191130

-- 
Cheers,
Stephen Rothwell

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