kernel-packages team mailing list archive

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

Kevin, to keep this relevant to upstream, could you please test the
latest mainline kernel (4.7-rc5) and advise to the results?

** Tags added: kernel-bug-exist-upstream kernel-bug-exist-upstream-4.6.2
regression-release

** Tags added: needs-bisect

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https://bugs.launchpad.net/bugs/1589837

Title:
  Kernel oops - BUG: unable to handle kernel NULL pointer dereference at
  00000000000000e4

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Regarding the dmesg from the crashdump:

  [ 2210.842592] BUG: unable to handle kernel NULL pointer dereference at 00000000000000e4
  [ 2210.842631] IP: [<ffffffff816fead6>] sock_poll+0x26/0x120
  [ 2210.842659] PGD 0 
  [ 2210.842670] Oops: 0000 [#1] SMP 
  [ 2210.842687] Modules linked in: drbg ansi_cprng cdc_ether usbnet r8152 mii nvram rfcomm xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) xt_tcpudp bridge stp llc vboxdrv(OE) iptable_filter ip_tables x_tables msr bnep btusb btrtl btbcm btintel bluetooth input_leds joydev bcm5974 nls_iso8859_1 applesmc input_polldev brcmfmac snd_hda_codec_hdmi snd_hda_codec_cirrus snd_hda_codec_generic brcmutil cfg80211 thunderbolt bdc_pci intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd intel_pch_thermal lpc_ich snd_hda_intel snd_hda_codec snd_hda_core
  [ 2210.843039]  snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer mei_me snd mei shpchp soundcore sbs sbshc acpi_als kfifo_buf apple_bl industrialio mac_hid spi_pxa2xx_platform facetimehd(OE) videobuf2_dma_sg videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common videodev media parport_pc ppdev lp parport autofs4 hid_generic hid_apple usbhid hid uas usb_storage i915 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ahci libahci drm fjes video
  [ 2210.843180] CPU: 3 PID: 3991 Comm: Chrome_IOThread Tainted: G           OE   4.4.0-22-generic #40-Ubuntu
  [ 2210.843202] Hardware name: Apple Inc. MacBookPro12,1/Mac-E43C1C25D4880AD6, BIOS MBP121.88Z.0167.B14.1509281135 09/28/2015
  [ 2210.843226] task: ffff8802611de040 ti: ffff880263a44000 task.ti: ffff880263a44000
  [ 2210.843243] RIP: 0010:[<ffffffff816fead6>]  [<ffffffff816fead6>] sock_poll+0x26/0x120
  [ 2210.843264] RSP: 0018:ffff880263a47d68  EFLAGS: 00010246
  [ 2210.843276] RAX: ffffffff81abcbe0 RBX: ffff88022dedf480 RCX: ffff88022c576918
  [ 2210.843292] RDX: 0000000000000000 RSI: ffff880263a47db8 RDI: ffff880263c1cf00
  [ 2210.843308] RBP: ffff880263a47d90 R08: 0000000000000000 R09: ffff880242c88c18
  [ 2210.843324] R10: ffff880244293038 R11: ffff88025f54d8c0 R12: ffff880263a47db8
  [ 2210.843340] R13: ffff880263c1cf00 R14: 0000000000000000 R15: 0000000000000000
  [ 2210.843356] FS:  00007f4015e73700(0000) GS:ffff88026ecc0000(0000) knlGS:0000000000000000
  [ 2210.843374] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [ 2210.843388] CR2: 00000000000000e4 CR3: 00000000821fe000 CR4: 00000000003406e0
  [ 2210.843404] Stack:
  [ 2210.843409]  ffff880263a47e18 0000000000000000 00001ed61c429c00 ffff880263a47ea0
  [ 2210.843429]  ffff880124d99d98 ffff880263a47df8 ffffffff81254a50 ffff8800821d98a0
  [ 2210.843448]  ffff880263a47f18 ffff8800821d9840 0000000000000000 0000000000000019
  [ 2210.843467] Call Trace:
  [ 2210.843476]  [<ffffffff81254a50>] ep_send_events_proc+0xb0/0x1c0
  [ 2210.843490]  [<ffffffff812549a0>] ? ep_ptable_queue_proc+0xa0/0xa0
  [ 2210.843505]  [<ffffffff812553b9>] ep_scan_ready_list+0x99/0x1f0
  [ 2210.843519]  [<ffffffff81255718>] ep_poll+0x1d8/0x3d0
  [ 2210.843532]  [<ffffffff8120cad9>] ? vfs_write+0x149/0x1a0
  [ 2210.843545]  [<ffffffff81256ae8>] SyS_epoll_wait+0xb8/0xd0
  [ 2210.843560]  [<ffffffff818252f2>] entry_SYSCALL_64_fastpath+0x16/0x71
  [ 2210.843574] Code: 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 45 31 ff 53 48 8b 9f d0 00 00 00 49 89 fd 49 89 f4 4c 8b 73 20 <41> 8b 96 e4 00 00 00 85 d2 0f 84 c2 00 00 00 41 8b 86 e0 00 00 
  [ 2210.843662] RIP  [<ffffffff816fead6>] sock_poll+0x26/0x120
  [ 2210.843679]  RSP <ffff880263a47d68>
  [ 2210.843687] CR2: 00000000000000e4

  
  the problem occurs since yesterday. 
  probably related to http://googlechromereleases.blogspot.ch/2016/06/stable-channel-update_6.html

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-22-generic 4.4.0-22.40
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  kevin      2371 F.... pulseaudio
   /dev/snd/controlC1:  kevin      2371 F.... pulseaudio
  Date: Tue Jun  7 09:38:44 2016
  InstallationDate: Installed on 2016-03-01 (97 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  MachineType: Apple Inc. MacBookPro12,1
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic.efi.signed root=UUID=18e90ec4-bbea-4061-aa6a-a7a46445929d ro quiet splash crashkernel=384M-:128M vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-22-generic N/A
   linux-backports-modules-4.4.0-22-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-04-06 (61 days ago)
  dmi.bios.date: 09/28/2015
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP121.88Z.0167.B14.1509281135
  dmi.board.name: Mac-E43C1C25D4880AD6
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookPro12,1
  dmi.chassis.type: 9
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-E43C1C25D4880AD6
  dmi.modalias: dmi:bvnAppleInc.:bvrMBP121.88Z.0167.B14.1509281135:bd09/28/2015:svnAppleInc.:pnMacBookPro12,1:pvr1.0:rvnAppleInc.:rnMac-E43C1C25D4880AD6:rvrMacBookPro12,1:cvnAppleInc.:ct9:cvrMac-E43C1C25D4880AD6:
  dmi.product.name: MacBookPro12,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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