linux-kernel - WARNING: CPU: 1 PID: 15 at kernel/sched/sched.h:804 assert_clock

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Message-ID: <1485588065.4181.7.camel@gmx.de>
Date:   Sat, 28 Jan 2017 08:21:05 +0100
From:   Mike Galbraith <efault@....de>
To:     Matt Fleming <matt@...eblueprint.co.uk>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>
Subject: WARNING: CPU: 1 PID: 15 at kernel/sched/sched.h:804
 assert_clock_updated.isra.62.part.63+0x25/0x27

Running Steven's hotplug stress script in tip.today.  Config is
NOPREEMPT, tune for maximum build time (enterprise default-ish).

[   75.268049] x86: Booting SMP configuration:
[   75.268052] smpboot: Booting Node 0 Processor 1 APIC 0x2
[   75.279994] smpboot: Booting Node 0 Processor 2 APIC 0x4
[   75.294617] smpboot: Booting Node 0 Processor 4 APIC 0x1
[   75.310698] smpboot: Booting Node 0 Processor 5 APIC 0x3
[   75.359056] smpboot: CPU 3 is now offline
[   75.415505] smpboot: CPU 4 is now offline
[   75.479985] smpboot: CPU 5 is now offline
[   75.550674] ------------[ cut here ]------------
[   75.550678] WARNING: CPU: 1 PID: 15 at kernel/sched/sched.h:804 assert_clock_updated.isra.62.part.63+0x25/0x27
[   75.550679] rq->clock_update_flags < RQCF_ACT_SKIP
[   75.550679] Modules linked in: ebtable_filter(E) ebtables(E) fuse(E) nf_log_ipv6(E) xt_pkttype(E) xt_physdev(E) br_netfilter(E) nf_log_ipv4(E) nf_log_common(E) xt_LOG(E) xt_limit(E) af_packet(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) ip6t_REJECT(E) xt_tcpudp(E) nf_conntrack_ipv6(E) nf_defrag_ipv6(E) ip6table_raw(E) ipt_REJECT(E) iptable_raw(E) xt_CT(E) iptable_filter(E) ip6table_mangle(E) nf_conntrack_netbios_ns(E) nf_conntrack_broadcast(E) nf_conntrack_ipv4(E) nf_defrag_ipv4(E) ip_tables(E) xt_conntrack(E) nf_conntrack(E) ip6table_filter(E) snd_hda_codec_hdmi(E) ip6_tables(E) x_tables(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) snd_hda_intel(E) snd_hda_codec(E) snd_hda_core(E) snd_hwdep(E) nls_iso8859_1(E) intel_rapl(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E)
[   75.550703]  snd_pcm(E) nls_cp437(E) kvm_intel(E) snd_timer(E) kvm(E) irqbypass(E) nfsd(E) snd(E) crct10dif_pclmul(E) crc32_pclmul(E) auth_rpcgss(E) ghash_clmulni_intel(E) joydev(E) nfs_acl(E) lockd(E) soundcore(E) i2c_i801(E) shpchp(E) pcbc(E) aesni_intel(E) mei_me(E) aes_x86_64(E) crypto_simd(E) iTCO_wdt(E) iTCO_vendor_support(E) lpc_ich(E) mfd_core(E) glue_helper(E) pcspkr(E) mei(E) grace(E) cryptd(E) intel_smartconnect(E) battery(E) fan(E) thermal(E) tpm_infineon(E) sunrpc(E) efivarfs(E) sr_mod(E) cdrom(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) ahci(E) wmi(E) libahci(E) i2c_algo_bit(E) drm_kms_helper(E) xhci_pci(E) syscopyarea(E) sysfillrect(E) sysimgblt(E) fb_sys_fops(E) ehci_pci(E) ehci_hcd(E) ttm(E) xhci_hcd(E) crc32c_intel(E) r8169(E)
[   75.550721]  mii(E) libata(E) drm(E) usbcore(E) fjes(E) video(E) button(E) sd_mod(E) vfat(E) fat(E) ext4(E) crc16(E) jbd2(E) mbcache(E) dm_mod(E) loop(E) sg(E) scsi_mod(E) autofs4(E)
[   75.550728] CPU: 1 PID: 15 Comm: migration/1 Tainted: G            E   4.10.0-tip-default #47
[   75.550728] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[   75.550728] Call Trace:
[   75.550732]  dump_stack+0x63/0x87
[   75.550734]  __warn+0xd1/0xf0
[   75.550737]  ? load_balance+0xa00/0xa00
[   75.550738]  warn_slowpath_fmt+0x4f/0x60
[   75.550739]  ? cpumask_next_and+0x35/0x50
[   75.550740]  assert_clock_updated.isra.62.part.63+0x25/0x27
[   75.550741]  update_load_avg+0x855/0x950
[   75.550742]  ? load_balance+0xa00/0xa00
[   75.550743]  set_next_entity+0x9e/0x1b0
[   75.550744]  pick_next_task_fair+0x78/0x540
[   75.550746]  ? sched_clock+0x9/0x10
[   75.550747]  ? sched_clock_cpu+0x11/0xb0
[   75.550748]  ? load_balance+0xa00/0xa00
[   75.550749]  sched_cpu_dying+0x23c/0x280
[   75.550751]  ? fini_debug_store_on_cpu+0x34/0x40
[   75.550752]  ? sched_cpu_starting+0x60/0x60
[   75.550753]  cpuhp_invoke_callback+0x90/0x400
[   75.550754]  take_cpu_down+0x5e/0xa0
[   75.550757]  multi_cpu_stop+0xc4/0xf0
[   75.550757]  ? cpu_stop_queue_work+0xb0/0xb0
[   75.550758]  cpu_stopper_thread+0x8c/0x120
[   75.550760]  smpboot_thread_fn+0x110/0x160
[   75.550762]  kthread+0x101/0x140
[   75.550762]  ? sort_range+0x30/0x30
[   75.550763]  ? kthread_park+0x90/0x90
[   75.550766]  ret_from_fork+0x2c/0x40
[   75.550766] ---[ end trace 9dd372e3b19c77a0 ]---