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Date: Thu, 26 Jan 2017 11:06:19 +0100 From: Peter Zijlstra <peterz@...radead.org> To: kernel test robot <xiaolong.ye@...el.com> Cc: Ingo Molnar <mingo@...nel.org>, Linus Torvalds <torvalds@...ux-foundation.org>, Mike Galbraith <efault@....de>, Thomas Gleixner <tglx@...utronix.de>, LKML <linux-kernel@...r.kernel.org>, Stephen Rothwell <sfr@...b.auug.org.au>, lkp@...org Subject: Re: [sched/clock] 9881b024b7: WARNING:at_kernel/sched/clock.c:#set_sched_clock_stable On Thu, Jan 26, 2017 at 05:14:06AM +0800, kernel test robot wrote: > > FYI, we noticed the following commit: > > commit: 9881b024b7d7671f6a014091bc96506b89081802 ("sched/clock: Delay switching sched_clock to stable") > https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > > [ 1457.700884] > [ 1457.701518] masked ExtINT on CPU#1 > [ 1457.701523] ------------[ cut here ]------------ > [ 1457.701527] WARNING: CPU: 1 PID: 0 at kernel/sched/clock.c:114 set_sched_clock_stable+0x66/0x70 > [ 1457.701527] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel snd_hda_codec_realtek ghash_clmulni_intel ppdev mxm_wmi pcbc snd_hda_codec_generic aesni_intel crypto_simd glue_helper cryptd pcspkr ahci libahci firewire_ohci libata snd_hda_intel firewire_core crc_itu_t snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd soundcore i7core_edac edac_core shpchp winbond_cir rc_core floppy parport_pc parport wmi acpi_cpufreq ip_tables > [ 1457.701544] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W I 4.10.0-rc3-00259-g9881b02 #1 > [ 1457.701544] Hardware name: /DX58SO, BIOS SOX5810J.86A.4934.2010.0129.1220 01/29/2010 > [ 1457.701545] Call Trace: > [ 1457.701549] dump_stack+0x63/0x8a > [ 1457.701550] __warn+0xcb/0xf0 > [ 1457.701551] warn_slowpath_null+0x1d/0x20 > Please do _NOT_ truncate WARNs, they have nice start and end markers for a purpose. In any case, this should be fixed by commit: acb04058de49 ("sched/clock: Fix hotplug crash")
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