kernel-packages team mailing list archive

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

Guillermo Rodas, the next step is to fully reverse commit bisect from
kernel 3.19 to 4.3 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.

Thank you for your understanding.

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

** Tags added: kernel-fixed-upstream kernel-fixed-upstream-4.3 needs-
reverse-bisect

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

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https://bugs.launchpad.net/bugs/1507091

Title:
  Corrupted low memory on Ubuntu 15.04

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I have had a lot of freezes on my laptop, and I'm trying to figure out
  what is the reason because just have like 6 months of bought.

  This is my laptop information:
  Lenovo G40-80
  7,7 GiB Memory
  Intel® Core™ i5-5200U CPU @ 2.20GHz × 4
  AMD Radeon HD 8500M
  Ubuntu 15.04 64-bit (Gnome version)

  I made a memtest86 and I got 3/4 good test (I took like 4 hours, so I
  just stopped it because I had to leave).

  I have this log that I think that was just before freezes (I have to
  do a Alt + SysReq + REISUB, for restart my laptop):

  Oct 17 00:26:51 lenovo kernel: [  120.925598] Corrupted low memory at ffff880000004fc0 (4fc0 phys) = ff232d2eff232d2e
  Oct 17 00:26:51 lenovo kernel: [  120.925599] Corrupted low memory at ffff880000004fc8 (4fc8 phys) = ff232d2eff232d2e
  Oct 17 00:26:51 lenovo kernel: [  120.925600] Corrupted low memory at ffff880000004fd0 (4fd0 phys) = ff232d2eff232d2e
  Oct 17 00:26:51 lenovo kernel: [  120.925601] Corrupted low memory at ffff880000004fd8 (4fd8 phys) = ff232d2eff232d2e
  Oct 17 00:26:51 lenovo kernel: [  120.925602] Corrupted low memory at ffff880000004fe0 (4fe0 phys) = ff232d2eff232d2e
  Oct 17 00:26:51 lenovo kernel: [  120.925603] Corrupted low memory at ffff880000004fe8 (4fe8 phys) = ff232d2eff232d2e
  Oct 17 00:26:51 lenovo kernel: [  120.925604] Corrupted low memory at ffff880000004ff0 (4ff0 phys) = ff242d2eff242d2e
  Oct 17 00:26:51 lenovo kernel: [  120.925605] Corrupted low memory at ffff880000004ff8 (4ff8 phys) = ff242d2eff242d2e
  Oct 17 00:26:51 lenovo kernel: [  120.925611] ------------[ cut here ]------------
  Oct 17 00:26:51 lenovo kernel: [  120.925616] WARNING: CPU: 2 PID: 218 at /build/linux-qOmAV7/linux-3.19.0/arch/x86/kernel/check.c:140 check_for_bios_corruption+0xcb/0x120()
  Oct 17 00:26:51 lenovo kernel: [  120.925617] Memory corruption detected in low memory
  Oct 17 00:26:51 lenovo kernel: [  120.925619] Modules linked in: pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) rfcomm bnep nls_iso8859_1 rtsx_usb_ms intel_rapl memstick iosf_mbi uvcvideo x86_pkg_temp_thermal intel_powerclamp coretemp videobuf2_vmalloc btusb kvm_intel videobuf2_memops bluetooth kvm arc4 videobuf2_core v4l2_common videodev rtl8723be snd_hda_codec_hdmi media crct10dif_pclmul crc32_pclmul i915_bpo btcoexist rtl8723_common rtl_pci ghash_clmulni_intel rtlwifi aesni_intel mac80211 aes_x86_64 lrw snd_hda_codec_conexant gf128mul intel_ips snd_hda_codec_generic glue_helper fglrx(POE) snd_hda_intel snd_hda_controller cfg80211 drm_kms_helper snd_hda_codec ablk_helper snd_hwdep drm snd_pcm cryptd snd_seq_midi amd_iommu_v2 snd_seq_midi_event snd_rawmidi i2c_algo_bit joydev serio_raw snd_seq ideapad_laptop snd_seq_device sparse_keymap mei_me snd_timer mei snd 8250_fintek soundcore shpchp wmi snd_soc_sst_acpi mac_hid lpc_ich video acpi_pad parport_pc ppdev lp parport autofs4 rtsx_usb_sdmmc rtsx_usb hid_generic usbhid hid psmouse ahci r8169 libahci mii
  Oct 17 00:26:51 lenovo kernel: [  120.925688] CPU: 2 PID: 218 Comm: kworker/2:2 Tainted: P           OE  3.19.0-30-generic #34-Ubuntu
  Oct 17 00:26:51 lenovo kernel: [  120.925690] Hardware name: LENOVO 80E4/Lenovo G40-80, BIOS B0CN69WW 06/20/2014
  Oct 17 00:26:51 lenovo kernel: [  120.925694] Workqueue: events check_corruption
  Oct 17 00:26:51 lenovo kernel: [  120.925696]  ffffffff81a92f40 ffff88009955bcf8 ffffffff817c4d5f 0000000000000007
  Oct 17 00:26:51 lenovo kernel: [  120.925699]  ffff88009955bd48 ffff88009955bd38 ffffffff81076a8a ffff880000004ff8
  Oct 17 00:26:51 lenovo kernel: [  120.925702]  0000000000000000 ffff880000010000 ffffffff81ede390 0000000000000001
  Oct 17 00:26:51 lenovo kernel: [  120.925706] Call Trace:
  Oct 17 00:26:51 lenovo kernel: [  120.925712]  [<ffffffff817c4d5f>] dump_stack+0x45/0x57
  Oct 17 00:26:51 lenovo kernel: [  120.925716]  [<ffffffff81076a8a>] warn_slowpath_common+0x8a/0xc0
  Oct 17 00:26:51 lenovo kernel: [  120.925719]  [<ffffffff81076b06>] warn_slowpath_fmt+0x46/0x50
  Oct 17 00:26:51 lenovo kernel: [  120.925724]  [<ffffffff810135e0>] ? __switch_to+0x150/0x5e0
  Oct 17 00:26:51 lenovo kernel: [  120.925728]  [<ffffffff8105d8bb>] check_for_bios_corruption+0xcb/0x120
  Oct 17 00:26:51 lenovo kernel: [  120.925731]  [<ffffffff8105d91e>] check_corruption+0xe/0x40
  Oct 17 00:26:51 lenovo kernel: [  120.925735]  [<ffffffff8108fd78>] process_one_work+0x158/0x430
  Oct 17 00:26:51 lenovo kernel: [  120.925738]  [<ffffffff810908bb>] worker_thread+0x5b/0x530
  Oct 17 00:26:51 lenovo kernel: [  120.925741]  [<ffffffff81090860>] ? rescuer_thread+0x3a0/0x3a0
  Oct 17 00:26:51 lenovo kernel: [  120.925745]  [<ffffffff81095959>] kthread+0xc9/0xe0
  Oct 17 00:26:51 lenovo kernel: [  120.925748]  [<ffffffff81095890>] ? kthread_create_on_node+0x1c0/0x1c0
  Oct 17 00:26:51 lenovo kernel: [  120.925752]  [<ffffffff817cbdd8>] ret_from_fork+0x58/0x90
  Oct 17 00:26:51 lenovo kernel: [  120.925755]  [<ffffffff81095890>] ? kthread_create_on_node+0x1c0/0x1c0
  Oct 17 00:26:51 lenovo kernel: [  120.925758] ---[ end trace 2d11d40c669ca9f1 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-30-generic 3.19.0-30.34
  ProcVersionSignature: Ubuntu 3.19.0-30.34-generic 3.19.8-ckt6
  Uname: Linux 3.19.0-30-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.17.2-0ubuntu1.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  garethderioth   2749 F.... pulseaudio
   /dev/snd/controlC1:  garethderioth   2749 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Sat Oct 17 00:50:25 2015
  HibernationDevice: RESUME=UUID=f5e958f3-cb2a-4efb-9bf6-be3b31234061
  InstallationDate: Installed on 2015-07-16 (92 days ago)
  InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64 (20150422)
  MachineType: LENOVO 80E4
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-30-generic.efi.signed root=UUID=45fd5ced-f1b0-4701-9acc-13b7f3be3222 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-30-generic N/A
   linux-backports-modules-3.19.0-30-generic  N/A
   linux-firmware                             1.143.3
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/20/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: B0CN69WW
  dmi.board.asset.tag: NO Asset Tag
  dmi.board.name: Lenovo G40-80
  dmi.board.vendor: LENOVO
  dmi.board.version: NO DPK
  dmi.chassis.asset.tag: NO Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo G40-80
  dmi.modalias: dmi:bvnLENOVO:bvrB0CN69WW:bd06/20/2014:svnLENOVO:pn80E4:pvrLenovoG40-80:rvnLENOVO:rnLenovoG40-80:rvrNODPK:cvnLENOVO:ct10:cvrLenovoG40-80:
  dmi.product.name: 80E4
  dmi.product.version: Lenovo G40-80
  dmi.sys.vendor: LENOVO

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