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

Andy Igoshin, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command, as it will automatically gather debugging information, in a terminal:
apport-collect 1263312
When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

** Package changed: linux-lts-saucy (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/1263312

Title:
  ext4 call trace

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  ubuntu server 13.10
  linux-image-3.11.0-14-generic          3.11.0-14.21
  linux-image-extra-3.11.0-14-generic    3.11.0-14.21

  
  Dec 21 14:11:54 ts kernel: [66458.692518] EXT4-fs warning (device dm-2): ext4_da_update_reserve_space:362: ino 179836584, allocated
  1 with only 0 reserved metadata blocks (releasing 8 blocks with reserved 80 data blocks)
  Dec 21 14:11:54 ts kernel: [66458.692522] ------------[ cut here ]------------
  Dec 21 14:11:54 ts kernel: [66458.692532] WARNING: CPU: 11 PID: 9442 at /build/buildd/linux-3.11.0/fs/ext4/inode.c:363 ext4_da_updat
  e_reserve_space+0x23e/0x260()
  Dec 21 14:11:54 ts kernel: [66458.692545] Modules linked in: ib_iser rdma_cm(F) ib_addr(F) iw_cm(F) ib_cm(F) ib_sa(F) ib_mad(F) ib_c
  ore(F) iscsi_tcp(F) libiscsi_tcp(F) quota_v2 quota_tree dm_crypt(F) x86_pkg_temp_thermal intel_powerclamp bnep rfcomm coretemp kvm_i
  ntel(F) bluetooth kvm(F) parport_pc(F) ppdev(F) crct10dif_pclmul(F) crc32_pclmul(F) ghash_clmulni_intel(F) aesni_intel(F) aes_x86_64
  (F) lrw(F) gf128mul(F) glue_helper(F) ablk_helper(F) cryptd(F) gpio_ich microcode(F) sb_edac acpi_power_meter edac_core lpc_ich mac_
  hid lp(F) parport(F) dm_round_robin(F) vesafb(F) dm_multipath(F) scsi_dh(F) be2iscsi iscsi_boot_sysfs libiscsi(F) be2net scsi_transp
  ort_iscsi(F) wmi
  Dec 21 14:11:54 ts kernel: [66458.692592] CPU: 11 PID: 9442 Comm: mozStorage #1 Tainted: GF            3.11.0-14-generic #21-Ubuntu
  Dec 21 14:11:54 ts kernel: [66458.692594] Hardware name: FUJITSU PRIMERGY BX924 S3/D3143-A1, BIOS V4.6.5.3 R2.20.0 for D3143-A1x 03/
  26/2013
  Dec 21 14:11:54 ts kernel: [66458.692596]  0000000000000009 ffff88280c28fb70 ffffffff816e593a 0000000000000000
  Dec 21 14:11:54 ts kernel: [66458.692600]  ffff88280c28fba8 ffffffff81061dbd ffff88277fb668b0 0000000000000008
  Dec 21 14:11:54 ts kernel: [66458.692602]  0000000000000001 0000000000000008 ffff88280b57f800 ffff88280c28fbb8
  Dec 21 14:11:54 ts kernel: [66458.692605] Call Trace:
  Dec 21 14:11:54 ts kernel: [66458.692621]  [<ffffffff816e593a>] dump_stack+0x45/0x56
  Dec 21 14:11:54 ts kernel: [66458.692626]  [<ffffffff81061dbd>] warn_slowpath_common+0x7d/0xa0
  Dec 21 14:11:54 ts kernel: [66458.692628]  [<ffffffff81061e9a>] warn_slowpath_null+0x1a/0x20
  Dec 21 14:11:54 ts kernel: [66458.692631]  [<ffffffff8124156e>] ext4_da_update_reserve_space+0x23e/0x260
  Dec 21 14:11:54 ts kernel: [66458.692635]  [<ffffffff8126bb3b>] ext4_ext_map_blocks+0xbdb/0x1000
  Dec 21 14:11:54 ts kernel: [66458.692638]  [<ffffffff81241865>] ext4_map_blocks+0x2d5/0x540
  Dec 21 14:11:54 ts kernel: [66458.692641]  [<ffffffff81244748>] ext4_writepages+0x598/0xd00
  Dec 21 14:11:54 ts kernel: [66458.692655]  [<ffffffff8114a4ae>] do_writepages+0x1e/0x40
  Dec 21 14:11:54 ts kernel: [66458.692661]  [<ffffffff81140089>] __filemap_fdatawrite_range+0x59/0x60
  Dec 21 14:11:54 ts kernel: [66458.692663]  [<ffffffff8114018a>] filemap_write_and_wait_range+0x2a/0x70
  Dec 21 14:11:54 ts kernel: [66458.692666]  [<ffffffff8123c2ca>] ext4_sync_file+0xba/0x320
  Dec 21 14:11:54 ts kernel: [66458.692672]  [<ffffffff811d4ff6>] do_fsync+0x56/0x80
  Dec 21 14:11:54 ts kernel: [66458.692676]  [<ffffffff811a77ec>] ? SyS_write+0x7c/0xa0
  Dec 21 14:11:54 ts kernel: [66458.692678]  [<ffffffff811d5280>] SyS_fsync+0x10/0x20
  Dec 21 14:11:54 ts kernel: [66458.692682]  [<ffffffff816f571d>] system_call_fastpath+0x1a/0x1f
  Dec 21 14:11:54 ts kernel: [66458.692684] ---[ end trace 1001f438f8734496 ]---

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