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From: Stephen Rothwell <sfr@canb.auug.org.au>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Linux-Next Mailing List <linux-next@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: linux-next: build warning after merge of the pm tree
Date: Mon, 9 Apr 2018 11:24:38 +1000
Message-ID: <20180409112438.6832432f@canb.auug.org.au> (raw)

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Hi Rafael,

After merging the pm tree, today's linux-next build (arm
multi_v7_defconfig) produced this warning:

kernel/time/tick-sched.c: In function 'tick_nohz_idle_exit':
kernel/time/tick-sched.c:1162:3: warning: 'now' may be used uninitialized in this function [-Wmaybe-uninitialized]
   __tick_nohz_idle_restart_tick(ts, now);
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/time/tick-sched.c:1146:10: note: 'now' was declared here
  ktime_t now;
          ^~~

This appears to be a false positive.

And another in the x86_64 allmodconfig build:

kernel/time/tick-sched.c: In function 'tick_nohz_idle_exit':
kernel/time/tick-sched.c:538:2: warning: 'now' may be used uninitialized in this function [-Wmaybe-uninitialized]
  update_ts_time_stats(smp_processor_id(), ts, now, NULL);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/time/tick-sched.c:1146:10: note: 'now' was declared here
  ktime_t now;
          ^~~

also looks like a false positive.

-- 
Cheers,
Stephen Rothwell

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             reply index

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-09  1:24 Stephen Rothwell [this message]
2018-04-10  7:05 ` Rafael J. Wysocki
  -- strict thread matches above, loose matches on Subject: below --
2020-01-19 23:40 Stephen Rothwell
2019-10-14 23:08 Stephen Rothwell
2019-10-15  8:23 ` Andy Shevchenko
2019-10-15  9:41   ` Rafael J. Wysocki
     [not found] <201907111346291954773@zte.com.cn>
2019-07-11 12:26 ` Rafael J. Wysocki
2019-07-11  1:31 Stephen Rothwell
2019-01-23 23:45 Stephen Rothwell
2018-07-30  2:00 Stephen Rothwell
2018-07-30  7:24 ` Sakari Ailus
2018-07-30  7:30   ` jacopo mondi
2018-07-31  0:39   ` Stephen Rothwell
2018-06-08  0:30 Stephen Rothwell
2018-06-08  9:14 ` Rafael J. Wysocki
2016-11-13 23:40 Stephen Rothwell
2016-11-14  0:03 ` Rafael J. Wysocki
2016-11-14  8:49   ` Akshay Adiga
2014-11-17  2:44 Stephen Rothwell
2014-11-17 11:31 ` Paul Bolle
2014-11-17 23:14   ` Rafael J. Wysocki
2014-11-17 23:45     ` Paul Bolle
2014-11-18  0:34       ` Rafael J. Wysocki
2014-10-29  2:51 Stephen Rothwell
2014-10-29 14:55 ` Rafael J. Wysocki
2014-10-29 15:23   ` Fengguang Wu
2014-10-29 15:56     ` Rafael J. Wysocki

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