From: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
To: Michal Marek <mmarek@suse.cz>
Cc: LKML <linux-kernel@vger.kernel.org>, linux-kbuild@vger.kernel.org
Subject: `make dep' with clock skew detected loops forever
Date: Wed, 29 Feb 2012 11:01:38 -0800 [thread overview]
Message-ID: <20120229190138.GG5136@linux.vnet.ibm.com> (raw)
Noticed something on a fresh FC16 based install on a test server in our
lab. Autotest by default runs `make dep` and it seems the clock is
pretty badly skewed on this server, resulting in an infinite loop of:
01:09:37 DEBUG| Running 'make dep'
01:09:38 DEBUG| [stderr] make: Warning: File `/usr/local/autotest/tmp/build/linux/arch/powerpc/Makefile' has modification time 112143 s in the future
01:09:38 DEBUG| [stderr] make[1]: Warning: File `/usr/local/autotest/tmp/build/linux/arch/powerpc/Makefile' has modification time 112143 s in the future
01:09:38 DEBUG| [stderr] make[2]: Warning: File `scripts/Makefile.host' has modification time 112143 s in the future
01:09:38 DEBUG| [stdout] HOSTCC scripts/basic/fixdep
01:09:38 DEBUG| [stderr] make[2]: warning: Clock skew detected. Your build may be incomplete.
01:09:38 DEBUG| [stderr] make[2]: Warning: File `scripts/Makefile.host' has modification time 112143 s in the future
01:09:38 DEBUG| [stdout] HOSTCC scripts/kconfig/conf.o
01:09:38 DEBUG| [stdout] SHIPPED scripts/kconfig/zconf.tab.c
01:09:38 DEBUG| [stdout] SHIPPED scripts/kconfig/zconf.lex.c
01:09:38 DEBUG| [stdout] SHIPPED scripts/kconfig/zconf.hash.c
01:09:39 DEBUG| [stdout] HOSTCC scripts/kconfig/zconf.tab.o
01:09:39 DEBUG| [stdout] HOSTLD scripts/kconfig/conf
01:09:39 DEBUG| [stdout] scripts/kconfig/conf --silentoldconfig Kconfig
01:09:39 DEBUG| [stderr] make[2]: warning: Clock skew detected. Your build may be incomplete.
01:09:39 DEBUG| [stderr] make[1]: warning: Clock skew detected. Your build may be incomplete.
01:09:39 DEBUG| [stderr] make: Warning: File `/usr/local/autotest/tmp/build/linux/arch/powerpc/Makefile' has modification time 112142 s in the future
01:09:39 DEBUG| [stderr] make[1]: Warning: File `/usr/local/autotest/tmp/build/linux/arch/powerpc/Makefile' has modification time 112142 s in the future
01:09:39 DEBUG| [stderr] make[2]: Warning: File `scripts/Makefile.host' has modification time 112142 s in the future
01:09:39 DEBUG| [stdout] HOSTCC scripts/basic/fixdep
01:09:40 DEBUG| [stderr] make[2]: warning: Clock skew detected. Your build may be incomplete.
01:09:40 DEBUG| [stderr] make[2]: Warning: File `scripts/Makefile.host' has modification time 112141 s in the future
01:09:40 DEBUG| [stdout] HOSTCC scripts/kconfig/conf.o
01:09:40 DEBUG| [stdout] SHIPPED scripts/kconfig/zconf.tab.c
01:09:40 DEBUG| [stdout] SHIPPED scripts/kconfig/zconf.lex.c
01:09:40 DEBUG| [stdout] SHIPPED scripts/kconfig/zconf.hash.c
01:09:40 DEBUG| [stdout] HOSTCC scripts/kconfig/zconf.tab.o
01:09:40 DEBUG| [stdout] HOSTLD scripts/kconfig/conf
01:09:40 DEBUG| [stdout] scripts/kconfig/conf --silentoldconfig Kconfig
Anyone know why that happens? Obvious fixes are to either not run `make
dep` or to install an NTP client, and I can do that, but figured I'd
report the above.
Thanks,
Nish
--
Nishanth Aravamudan <nacc@us.ibm.com>
IBM Linux Technology Center
next reply other threads:[~2012-02-29 19:05 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-29 19:01 Nishanth Aravamudan [this message]
2012-03-05 14:40 ` `make dep' with clock skew detected loops forever Michal Marek
2012-03-05 15:33 ` Nishanth Aravamudan
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