kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

CrystalMageX, the next step is to fully reverse commit bisect from
kernel 4.3 to 4.4-rc7 in order to identify the last bad commit, followed
immediately by the first good one. Once this commit has been identified,
then it may be reviewed as a candidate for backporting into your
release. Could you please do this following
https://wiki.ubuntu.com/Kernel/KernelBisection#How_do_I_reverse_bisect_the_upstream_kernel.3F
?

Please note, finding adjacent kernel versions is not fully commit
bisecting.

After the fix commit (not kernel version) has been identified, then
please mark this report Status Confirmed.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

** Tags added: kernel-fixed-upstream-4.4-rc7

** Tags added: needs-reverse-bisect

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1530405

Title:
  NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [kerneloops:814]

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I'm using Ubuntu Xenial 16.04 and my computer (ASUS M32BF) will
  randomly freeze up, sometimes before the login screen, sometimes while
  I'm in the middle of using a program. This sometimes happens on the
  Wily 15.10 live cd as well, and on both kernel 4.3.0-2, and kernel
  4.2.0-22.

  Important part of log:

  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112129] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [kerneloops:814]
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112134] Modules linked in: rfcomm bnep nls_iso8859_1 kvm_amd kvm eeepc_wmi asus_wmi crct10dif_pclmul sparse_keymap crc32_pclmul aesni_intel aes_x86_64 arc4 lrw gf128mul rtl8821ae glue_helper snd_hda_codec_realtek ablk_helper snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel btcoexist snd_hda_codec rtl_pci snd_hda_core joydev input_leds snd_hwdep rtlwifi snd_pcm fam15h_power cryptd snd_seq_midi serio_raw snd_seq_midi_event snd_rawmidi mac80211 snd_seq snd_seq_device snd_timer cfg80211 btusb btrtl btbcm btintel bluetooth snd soundcore edac_mce_amd k10temp edac_core i2c_piix4 shpchp mac_hid parport_pc ppdev lp parport autofs4 hid_logitech_hidpp uas usb_storage hid_logitech_dj usbhid hid amdkfd amd_iommu_v2 radeon i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops r8169 psmouse mii drm ahci libahci wmi fjes video
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112183] CPU: 0 PID: 814 Comm: kerneloops Not tainted 4.3.0-2-generic #11-Ubuntu
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112184] Hardware name: ASUSTeK COMPUTER INC. K30BF_M32BF_A_F_K31BF_6/K30BF_M32BF_A_F_K31BF_6, BIOS 0501 07/09/2015
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112186] task: ffff88031146d400 ti: ffff88030e838000 task.ti: ffff88030e838000
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112188] RIP: 0010:[<ffffffff810819d6>]  [<ffffffff810819d6>] __do_softirq+0x76/0x250
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112194] RSP: 0018:ffff88031fc03f30  EFLAGS: 00000202
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112196] RAX: ffff88030e83c000 RBX: 0000000000000000 RCX: 0000000040400040
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112197] RDX: 0000000000000000 RSI: 000000000000613e RDI: 0000000000000380
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112198] RBP: ffff88031fc03f80 R08: 00000029f8fa1411 R09: ffff88031fc169f0
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112199] R10: 0000000000000020 R11: 0000000000000004 R12: ffff88031fc169c0
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112201] R13: ffff88030df8e200 R14: 0000000000000000 R15: 0000000000000001
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112202] FS:  00007f6c266ac880(0000) GS:ffff88031fc00000(0000) knlGS:0000000000000000
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112203] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112205] CR2: 00007ffef000bff8 CR3: 000000030f368000 CR4: 00000000000406f0
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112206] Stack:
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112207]  404000401fc03f78 ffff88030e83c000 00000000ffff0121 ffff88030000000a
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112209]  000000021fc0d640 0000000000000000 ffff88031fc169c0 ffff88030df8e200
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112211]  0000000000000000 0000000000000001 ffff88031fc03f90 ffffffff81081d23
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112213] Call Trace:
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112215]  <IRQ> 
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112219]  [<ffffffff81081d23>] irq_exit+0xa3/0xb0
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112222]  [<ffffffff817fda02>] smp_apic_timer_interrupt+0x42/0x50
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112225]  [<ffffffff817fb862>] apic_timer_interrupt+0x82/0x90
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112226]  <EOI> 
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112230]  [<ffffffff810a5457>] ? finish_task_switch+0x67/0x1c0
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112232]  [<ffffffff817f645c>] __schedule+0x36c/0x980
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112234]  [<ffffffff817f6aa3>] schedule+0x33/0x80
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112236]  [<ffffffff817f9e4f>] do_nanosleep+0x6f/0xf0
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112239]  [<ffffffff810ea59c>] hrtimer_nanosleep+0xdc/0x1f0
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112241]  [<ffffffff810e9500>] ? __hrtimer_init+0x90/0x90
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112243]  [<ffffffff817f9e3a>] ? do_nanosleep+0x5a/0xf0
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112245]  [<ffffffff810ea72a>] SyS_nanosleep+0x7a/0x90
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112247]  [<ffffffff817faaf2>] entry_SYSCALL_64_fastpath+0x16/0x71
  Dec 31 19:13:12 COMPUTERNAME kernel: [   64.112248] Code: 45 d4 89 4d b4 65 48 8b 04 25 c4 3e 01 00 c7 45 c8 0a 00 00 00 48 89 45 b8 65 c7 05 31 24 f9 7e 00 00 00 00 fb 66 0f 1f 44 00 00 <b8> ff ff ff ff 49 c7 c4 c0 b0 e0 81 0f bc 45 d4 83 c0 01 89 45 

  This soft lockup happens either in kerneloops or swapper/0.

  This might have something to do with networking, because the soft
  lockups appear happen immediately before or after some network-related
  stuff. nm-applet says NetworkManager is not running, but "service
  network-manager status" says it is. "service network-manager stop"
  does not work, and I need to "kill -9" the pids for the processes.
  After starting the service after killing it, it the nm-applet's "Edit
  Connection" works for a few moments, then it won't delete any
  connections, and when closed, it won't re-open. At then end "kill -9"
  won't even work anymore (the processes get parented to init, but do
  not die). Usually, however, I never even see the login screen.

  I've been able to boot into the Wily livecd by using Windows 10 ->
  Shift-Restart -> UEFI Settings -> then booting my USB with the livecd
  (often soft lockups without going through windows).

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