kernel-packages team mailing list archive

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

Marek Šikl, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:
apport-collect 1547011

** Package changed: linux-lts-vivid (Ubuntu) => linux (Ubuntu)

** Changed in: linux (Ubuntu)
   Importance: Undecided => Low

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

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https://bugs.launchpad.net/bugs/1547011

Title:
  kernel error

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Server freezes in week period approximately with this syslog message:

  Feb 18 11:26:32 server kernel: [849924.991842] ------------[ cut here ]------------
  Feb 18 11:26:32 server kernel: [849924.991867] WARNING: CPU: 19 PID: 32274 at /build/linux-lts-vivid-LIqOuh/linux-lts-vivid-3.19.0/include/linux/kref.h:47 kref_get.part.0+0x1e/0x27()
  Feb 18 11:26:32 server kernel: [849924.991870] Modules linked in: btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c ipmi_devintf xt_recent xt_multiport quota_v2 quota_tree ipt_REJ
  ECT nf_reject_ipv4 xt_comment nf_log_ipv4 nf_log_common xt_LOG xt_tcpudp xt_limit xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ip6table_filter ast ip6_tables ttm iptable_filter drm_kms_helper ip
  mi_ssif intel_rapl ip_tables iosf_mbi drm x_tables syscopyarea sysfillrect x86_pkg_temp_thermal intel_powerclamp kvm_intel sysimgblt kvm joydev crct10dif_pclmul crc32_pclmul lpc_ich cryptd sb_edac mei_me eda
  c_core mei ipmi_si ipmi_msghandler 8250_fintek nf_conntrack_ftp nf_conntrack wmi shpchp ioatdma coretemp acpi_pad acpi_power_meter mac_hid lp parport igb hid_generic i2c_algo_bit dca usbhid megaraid_sas ahci
   ptp hid libahci pps_core
  Feb 18 11:26:32 server kernel: [849924.991960] CPU: 19 PID: 32274 Comm: pop3 Not tainted 3.19.0-49-generic #55~14.04.1-Ubuntu
  Feb 18 11:26:32 server kernel: [849924.991963] Hardware name: Supermicro X10DRW/X10DRW-i, BIOS 1.0b 10/29/2014
  Feb 18 11:26:32 server kernel: [849924.991965]  ffffffff81a91160 ffff8805ca80b878 ffffffff817b01b5 0000000000000000
  Feb 18 11:26:32 server kernel: [849924.991970]  0000000000000000 ffff8805ca80b8b8 ffffffff81074dea ffff88086afa3840
  Feb 18 11:26:32 server kernel: [849924.991973]  ffff88046b217100 ffff88046b217100 ffff88046b218030 ffff88086af2f430
  Feb 18 11:26:32 server kernel: [849924.991978] Call Trace:
  Feb 18 11:26:32 server kernel: [849924.991987]  [<ffffffff817b01b5>] dump_stack+0x45/0x57
  Feb 18 11:26:32 server kernel: [849924.991994]  [<ffffffff81074dea>] warn_slowpath_common+0x8a/0xc0
  Feb 18 11:26:32 server kernel: [849924.991998]  [<ffffffff81074eda>] warn_slowpath_null+0x1a/0x20
  Feb 18 11:26:32 server kernel: [849924.992002]  [<ffffffff817afee1>] kref_get.part.0+0x1e/0x27
  Feb 18 11:26:32 server kernel: [849924.992014]  [<ffffffff8134df15>] aa_label_merge+0x445/0x7c0
  Feb 18 11:26:32 server kernel: [849924.992020]  [<ffffffff8134ac42>] update_file_cxt+0x32/0x80
  Feb 18 11:26:32 server kernel: [849924.992024]  [<ffffffff8134b86a>] aa_file_perm+0x11a/0x440
  Feb 18 11:26:32 server kernel: [849924.992033]  [<ffffffff81202f7c>] ? prepend_path+0xcc/0x2a0
  Feb 18 11:26:32 server kernel: [849924.992038]  [<ffffffff81348b8a>] common_file_perm+0x4a/0x100
  Feb 18 11:26:32 server kernel: [849924.992043]  [<ffffffff81348c91>] apparmor_file_receive+0x51/0x60
  Feb 18 11:26:32 server kernel: [849924.992050]  [<ffffffff81308a66>] security_file_receive+0x16/0x20
  Feb 18 11:26:32 server kernel: [849924.992059]  [<ffffffff816a0768>] scm_detach_fds+0x148/0x260
  Feb 18 11:26:32 server kernel: [849924.992070]  [<ffffffff8174b0d1>] unix_stream_recvmsg+0x681/0x950
  Feb 18 11:26:32 server kernel: [849924.992075]  [<ffffffff81352b41>] ? aa_sock_msg_perm+0x81/0x150
  Feb 18 11:26:32 server kernel: [849924.992081]  [<ffffffff8168f862>] sock_recvmsg+0xa2/0xd0
  Feb 18 11:26:32 server kernel: [849924.992086]  [<ffffffff8168f4fe>] ? copy_msghdr_from_user+0x15e/0x1f0
  Feb 18 11:26:32 server kernel: [849924.992090]  [<ffffffff8168f683>] ___sys_recvmsg+0xf3/0x230
  Feb 18 11:26:32 server kernel: [849924.992096]  [<ffffffff81230947>] ? ep_send_events_proc+0xa7/0x1c0
  Feb 18 11:26:32 server kernel: [849924.992100]  [<ffffffff812308a0>] ? ep_read_events_proc+0xc0/0xc0
  Feb 18 11:26:32 server kernel: [849924.992104]  [<ffffffff81231249>] ? ep_scan_ready_list.isra.8+0x199/0x1c0
  Feb 18 11:26:32 server kernel: [849924.992108]  [<ffffffff812313a0>] ? ep_poll+0x110/0x350
  Feb 18 11:26:32 server kernel: [849924.992112]  [<ffffffff81690aa2>] __sys_recvmsg+0x42/0x80
  Feb 18 11:26:32 server kernel: [849924.992116]  [<ffffffff81690af2>] SyS_recvmsg+0x12/0x20
  Feb 18 11:26:32 server kernel: [849924.992127]  [<ffffffff817b7c0d>] system_call_fastpath+0x16/0x1b
  Feb 18 11:26:32 server kernel: [849924.992130] ---[ end trace 59885196d131ae8e ]---
  Feb 18 11:26:32 server kernel: [849925.019773] BUG: unable to handle kernel NULL pointer dereference at 0000000000000098
  Feb 18 11:26:32 server kernel: [849925.019849] IP: [<ffffffff8134db17>] aa_label_merge+0x47/0x7c0
  Feb 18 11:26:32 server kernel: [849925.019917] PGD 0
  Feb 18 11:26:32 server kernel: [849925.019938] Oops: 0000 [#1] SMP

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-extra-3.19.0-49-generic 3.19.0-49.55~14.04.1
  ProcVersionSignature: Ubuntu 3.19.0-49.55~14.04.1-generic 3.19.8-ckt12
  Uname: Linux 3.19.0-49-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  Date: Thu Feb 18 13:42:09 2016
  InstallationDate: Installed on 2015-08-12 (190 days ago)
  InstallationMedia: Ubuntu-Server 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  SourcePackage: linux-lts-vivid
  UpgradeStatus: No upgrade log present (probably fresh install)

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