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["Brian J. Murrell" <brian@xxxxxxxxxxxxxxx>]

So now that I have determined that this problem is fixed in the
newer/upstream kernel, what next?

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https://bugs.launchpad.net/bugs/1568830

Title:
  make_request bug: can't convert block across chunks or bigger than
  512k 2554601336 124

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I have a couple of RAID arrays with the following configuration:

  /dev/md1:
          Version : 1.2
    Creation Time : Sat Dec 26 19:49:41 2015
       Raid Level : raid0
       Array Size : 1953524736 (1863.03 GiB 2000.41 GB)
     Raid Devices : 2
    Total Devices : 2
      Persistence : Superblock is persistent

      Update Time : Sat Dec 26 19:49:41 2015
            State : clean
   Active Devices : 2
  Working Devices : 2
   Failed Devices : 0
    Spare Devices : 0

       Chunk Size : 512K

             Name : linux.interlinx.bc.ca:1  (local to host linux.interlinx.bc.ca)
             UUID : f27ae74d:e2997e50:9df158ee:c5ed3cbb
           Events : 0

      Number   Major   Minor   RaidDevice State
         0       8       16        0      active sync   /dev/sdb
         1       8       32        1      active sync   /dev/sdc

  /dev/md0:
          Version : 0.90
    Creation Time : Mon Jan 26 19:51:38 2009
       Raid Level : raid1
       Array Size : 1953514496 (1863.02 GiB 2000.40 GB)
    Used Dev Size : 1953514496 (1863.02 GiB 2000.40 GB)
     Raid Devices : 2
    Total Devices : 2
  Preferred Minor : 0
      Persistence : Superblock is persistent

      Update Time : Fri Apr  8 00:00:42 2016
            State : active, degraded
   Active Devices : 1
  Working Devices : 1
   Failed Devices : 1
    Spare Devices : 0

             UUID : 2f8fc5e0:a0eb646a:2303d005:33f25f21
           Events : 0.5031387

      Number   Major   Minor   RaidDevice State
         0       8       48        0      active sync   /dev/sdd
         1       0        0        1      removed

         2       9        1        -      faulty spare   /dev/md1

  This configuration has worked for a number of years but has all of a
  sudden started breaking with:

  [37722.335880] md/raid0:md1: make_request bug: can't convert block across chunks or bigger than 512k 2554601336 124
  [37722.335887] md/raid1:md0: md1: rescheduling sector 2554601336
  [37722.376776] md/raid1:md0: redirecting sector 2554601336 to other mirror: md1
  [37722.386455] md/raid0:md1: make_request bug: can't convert block across chunks or bigger than 512k 2554601336 124
  [37722.386461] md/raid1:md0: md1: rescheduling sector 2554601336
  [37722.412059] md/raid1:md0: redirecting sector 2554601336 to other mirror: sdd
  [37722.735049] md/raid0:md1: make_request bug: can't convert block across chunks or bigger than 512k 2554608496 124
  [37722.735056] md/raid1:md0: md1: rescheduling sector 2554608496
  [37722.789926] md/raid1:md0: redirecting sector 2554608496 to other mirror: md1
  [37722.798689] md/raid0:md1: make_request bug: can't convert block across chunks or bigger than 512k 2554608496 124
  [37722.798696] md/raid1:md0: md1: rescheduling sector 2554608496
  [37722.859314] md/raid1:md0: redirecting sector 2554608496 to other mirror: sdd
  [37724.819090] md/raid0:md1: make_request bug: can't convert block across chunks or bigger than 512k 2554606584 12
  [37724.819096] md/raid1:md0: md1: rescheduling sector 2554606584
  [37727.455279] md/raid1:md0: redirecting sector 2554606584 to other mirror: sdd
  [37752.406865] md/raid0:md1: make_request bug: can't convert block across chunks or bigger than 512k 1748150224 124
  [37752.521219] md/raid1:md0: Disk failure on md1, disabling device.
  [37752.521222] md/raid1:md0: Operation continuing on 1 devices.
  [37752.580186] RAID1 conf printout:
  [37752.580190]  --- wd:1 rd:2
  [37752.580194]  disk 0, wo:0, o:1, dev:sdd
  [37752.580197]  disk 1, wo:1, o:0, dev:md1
  [37752.580199] RAID1 conf printout:
  [37752.580201]  --- wd:1 rd:2
  [37752.580203]  disk 0, wo:0, o:1, dev:sdd
  [37752.580228] BUG: unable to handle kernel paging request at 000000001dff2107
  [37752.584011] IP: [<ffffffffa001909a>] close_write+0x6a/0xa0 [raid1]
  [37752.584011] PGD 20f667067 PUD 20f669067 PMD 0 
  [37752.584011] Oops: 0000 [#1] SMP 
  [37752.584011] CPU 0 
  [37752.584011] Modules linked in: iptable_mangle iptable_filter ipt_MASQUERADE xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables autofs4 nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm radeon snd_seq_midi ttm drm_kms_helper snd_rawmidi ftdi_sio snd_seq_midi_event snd_seq snd_timer drm ppdev snd_seq_device pl2303 usbserial serio_raw i2c_algo_bit mac_hid asus_atk0110 snd parport_pc parport soundcore snd_page_alloc edac_core edac_mce_amd i2c_piix4 k8temp shpchp 8021q garp stp pata_atiixp r8169 raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 multipath linear
  [37752.584011] 
  [37752.584011] Pid: 267, comm: md0_raid1 Not tainted 3.2.0-101-generic #141-Ubuntu System manufacturer System Product Name/M2A-VM
  [37752.584011] RIP: 0010:[<ffffffffa001909a>]  [<ffffffffa001909a>] close_write+0x6a/0xa0 [raid1]
  [37752.584011] RSP: 0018:ffff88020def9dc0  EFLAGS: 00010246
  [37752.584011] RAX: 000000001dff1dff RBX: ffff88020e380108 RCX: 00000000e8e08784
  [37752.584011] RDX: 00000000687249a8 RSI: 0000000000000002 RDI: ffff88020e380108
  [37752.584011] RBP: ffff88020def9dd0 R08: 00000000e8e08784 R09: 000000000000036b
  [37752.584011] R10: dead000000100100 R11: dead000000200200 R12: ffff88020e36b800
  [37752.584011] R13: ffff88020e380100 R14: ffff88020e380130 R15: ffff88020e380108
  [37752.584011] FS:  00007f8e0a353740(0000) GS:ffff88021fc00000(0000) knlGS:00000000f75586c0
  [37752.584011] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
  [37752.584011] CR2: 000000001dff2107 CR3: 000000020f61e000 CR4: 00000000000006f0
  [37752.584011] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  [37752.584011] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
  [37752.584011] Process md0_raid1 (pid: 267, threadinfo ffff88020def8000, task ffff88020e2eae00)
  [37752.584011] Stack:
  [37752.584011]  ffff88020def9e20 ffff88020e36b800 ffff88020def9e60 ffffffffa001cbe5
  [37752.584011]  ffff88020e380140 ffff880044dbd800 0000000091827364 ffff88020def9df8
  [37752.584011]  ffff88020def9df8 ffff88020def9e08 ffff88020def9e08 ffff880200000000
  [37752.584011] Call Trace:
  [37752.584011]  [<ffffffffa001cbe5>] raid1d+0x2a5/0x2b0 [raid1]
  [37752.584011]  [<ffffffff814f0f9e>] md_thread+0x11e/0x170
  [37752.584011]  [<ffffffff8108c650>] ? add_wait_queue+0x60/0x60
  [37752.584011]  [<ffffffff814f0e80>] ? md_rdev_init+0x130/0x130
  [37752.584011]  [<ffffffff8108bbac>] kthread+0x8c/0xa0
  [37752.584011]  [<ffffffff816746b4>] kernel_thread_helper+0x4/0x10
  [37752.584011]  [<ffffffff8108bb20>] ? flush_kthread_worker+0xa0/0xa0
  [37752.584011]  [<ffffffff816746b0>] ? gs_change+0x13/0x13
  [37752.584011] Code: e4 48 8b 53 48 75 de 48 89 d7 e8 e2 cd 14 e1 48 c7 43 48 00 00 00 00 4c 8b 43 18 48 8b 43 20 48 8b 4b 18 48 63 53 10 48 8b 73 08 <48> 8b b8 08 03 00 00 49 c1 e8 03 48 c1 e9 02 41 83 e0 01 83 e1 
  [37752.584011] RIP  [<ffffffffa001909a>] close_write+0x6a/0xa0 [raid1]
  [37752.584011]  RSP <ffff88020def9dc0>
  [37752.584011] CR2: 000000001dff2107
  [37752.889674] ---[ end trace 276f024e11aa62ac ]---

  This being a broken array now makes this a rather dire and dangerous
  situation.  Please advise ASAP.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-101-generic 3.2.0-101.141
  ProcVersionSignature: Ubuntu 3.2.0-101.141-generic 3.2.76
  Uname: Linux 3.2.0-101-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.0.1-0ubuntu17.13
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1c', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D2c', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  BootDmesg: (Nothing has been logged yet.)
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  Card0.Amixer.info: Error: [Errno 2] No such file or directory
  Card0.Amixer.values: Error: [Errno 2] No such file or directory
  Date: Mon Apr 11 08:17:39 2016
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
  Lspci: Error: [Errno 2] No such file or directory
  MachineType: System manufacturer System Product Name
  MarkForUpload: True
  PciMultimedia:
   
  ProcEnviron:
   TERM=screen
   PATH=(custom, no user)
   LANG=en_CA.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-101-generic root=/dev/mapper/rootvol-ubuntu_root ro console=ttyS0,115200 console=tty0
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-101-generic N/A
   linux-backports-modules-3.2.0-101-generic  N/A
   linux-firmware                             1.79.18
  RfKill: Error: [Errno 2] No such file or directory
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/28/2008
  dmi.bios.vendor: Phoenix Technologies, LTD
  dmi.bios.version: ASUS M2A-VM ACPI BIOS Revision 1705
  dmi.board.name: M2A-VM
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: 1.XX
  dmi.chassis.asset.tag: 123456789000
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvrASUSM2A-VMACPIBIOSRevision1705:bd03/28/2008:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM2A-VM:rvr1.XX:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.0.1-0ubuntu17.13
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1c', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D2c', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  BootDmesg: (Nothing has been logged yet.)
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  Card0.Amixer.info: Error: [Errno 2] No such file or directory
  Card0.Amixer.values: Error: [Errno 2] No such file or directory
  DistroRelease: Ubuntu 12.04
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
  Lspci: Error: [Errno 2] No such file or directory
  MachineType: System manufacturer System Product Name
  MarkForUpload: True
  Package: linux 3.2.0.101.117
  PackageArchitecture: amd64
  PciMultimedia:
   
  ProcEnviron:
   TERM=screen
   PATH=(custom, no user)
   LANG=en_CA.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-101-generic root=/dev/mapper/rootvol-ubuntu_root ro console=ttyS0,115200 console=tty0
  ProcVersionSignature: Ubuntu 3.2.0-101.141-generic 3.2.76
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-101-generic N/A
   linux-backports-modules-3.2.0-101-generic  N/A
   linux-firmware                             1.79.18
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  precise
  Uname: Linux 3.2.0-101-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  dmi.bios.date: 03/28/2008
  dmi.bios.vendor: Phoenix Technologies, LTD
  dmi.bios.version: ASUS M2A-VM ACPI BIOS Revision 1705
  dmi.board.name: M2A-VM
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: 1.XX
  dmi.chassis.asset.tag: 123456789000
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvrASUSM2A-VMACPIBIOSRevision1705:bd03/28/2008:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM2A-VM:rvr1.XX:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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