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[Faidon Liambotis <1276705@xxxxxxxxxxxxxxxxxx>]

We're also experiencing the same issue when booting the trusty installer
on a Dell PowerEdge R610 with a Dell SAS 6/iR controller (LSI SAS1068E),
resulting in the inability to install/run this system. This is an
extremely popular controller, prevalent in a signifcant portion of Dell
systems (or systems in general) out there, so this is a pretty serious
bug for Trusty.

The kernel actually oopses, here's the relevant lines from dmesg:
[   80.845434] Fusion MPT SAS Host driver 3.04.20
[   80.845640] mptbase: ioc0: Initiating bringup
[   80.987894] ipmi_si ipmi_si.0: Found new BMC (man_id: 0x0002a2, prod_id: 0x0100, dev_id: 0x2)
[   80.987908] ipmi_si ipmi_si.0: IPMI kcs interface initialized
[   81.550894] ioc0: LSISAS1068E B3: Capabilities={Initiator}
[  111.853426] scsi0: error handler thread failed to spawn, error = -12
[  111.853431] mptsas: ioc0: WARNING - Unable to register controller with SCSI subsystem
[  111.853441] BUG: unable to handle kernel NULL pointer dereference at 0000000000000060
[  111.861275] IP: [<ffffffff81710382>] mutex_lock+0x12/0x2f
[  111.866676] PGD 421531067 PUD 4207f2067 PMD 0
[  111.871137] Oops: 0002 [#1] SMP
[  111.874375] Modules linked in: mptsas(F+) mptscsih(F) mptbase(F) scsi_transport_sas(F) ipmi_)
[  111.899462] CPU: 0 PID: 9847 Comm: systemd-udevd Tainted: GF            3.13.0-8-generic #27u
[  111.908489] Hardware name: Dell Inc. PowerEdge R610/0F0XJ6, BIOS 3.0.0 01/31/2011
[  111.915955] task: ffff880420734800 ti: ffff880422356000 task.ti: ffff880422356000
[  111.923496] RIP: 0010:[<ffffffff81710382>]  [<ffffffff81710382>] mutex_lock+0x12/0x2f
[  111.931319] RSP: 0018:ffff880422357b10  EFLAGS: 00010246
[  111.936619] RAX: 0000000000000000 RBX: 0000000000000060 RCX: 0000000000000006
[  111.943737] RDX: 0000000000000007 RSI: 00000000f0aef0ac RDI: 0000000000000060
[  111.950856] RBP: ffff880422357b18 R08: 0000000000000086 R09: 000000000000037f
[  111.957974] R10: 0000000000000000 R11: ffff8804223578ae R12: 0000000000000060
[  111.965091] R13: ffff880423e9f000 R14: ffff880423e9f098 R15: ffffffffa01063a0
[  111.972210] FS:  00007fd5221af7c0(0000) GS:ffff88042fc00000(0000) knlGS:0000000000000000
[  111.980283] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  111.986014] CR2: 0000000000000060 CR3: 000000042144f000 CR4: 00000000000007f0
[  111.993132] Stack:
[  111.995135]  0000000000000000 ffff880422357b40 ffffffff814c842d ffff880423da6000
[  112.002549]  0000000000000000 ffff880423e9f000 ffff880422357b70 ffffffffa00ee2a1
[  112.009966]  ffff880423da6000 00000000ffffffff ffff880423e9f000 ffff880423e9f098
[  112.017384] Call Trace:
[  112.019830]  [<ffffffff814c842d>] scsi_remove_host+0x1d/0x120
[  112.025565]  [<ffffffffa00ee2a1>] mptscsih_remove+0x31/0xc0 [mptscsih]
[  112.032082]  [<ffffffffa0100259>] mptsas_probe+0x419/0x5a0 [mptsas]
[  112.038337]  [<ffffffff8139c775>] local_pci_probe+0x45/0xa0
[  112.043897]  [<ffffffff8139da15>] ? pci_match_device+0xc5/0xd0
[  112.049718]  [<ffffffff8139db39>] pci_device_probe+0xd9/0x130
[  112.055454]  [<ffffffff814839b5>] driver_probe_device+0x125/0x3b0
[  112.061534]  [<ffffffff81483d13>] __driver_attach+0x93/0xa0
[  112.067094]  [<ffffffff81483c80>] ? __device_attach+0x40/0x40
[  112.072829]  [<ffffffff81481923>] bus_for_each_dev+0x63/0xa0
[  112.078475]  [<ffffffff8148336e>] driver_attach+0x1e/0x20
[  112.083861]  [<ffffffff81482f50>] bus_add_driver+0x180/0x250
[  112.089508]  [<ffffffffa0065000>] ? 0xffffffffa0064fff
[  112.094634]  [<ffffffff81484394>] driver_register+0x64/0xf0
[  112.100195]  [<ffffffffa0065000>] ? 0xffffffffa0064fff
[  112.105322]  [<ffffffff8139c10c>] __pci_register_driver+0x4c/0x50
[  112.111404]  [<ffffffffa006511e>] mptsas_init+0x11e/0x1000 [mptsas]
[  112.117658]  [<ffffffff8100214a>] do_one_initcall+0xfa/0x1b0
[  112.123308]  [<ffffffff81056d23>] ? set_memory_nx+0x43/0x50
[  112.128871]  [<ffffffff810df8dd>] load_module+0x12dd/0x1b40
[  112.134432]  [<ffffffff810db360>] ? store_uevent+0x40/0x40
[  112.139908]  [<ffffffff810e02b6>] SyS_finit_module+0x86/0xb0
[  112.145558]  [<ffffffff8171a73f>] tracesys+0xe1/0xe6
[  112.150508] Code: 05 e1 99 ff e9 40 ff ff ff b8 01 00 00 00 e9 8c fe ff ff 66 0f 1f 44 00 00
[  112.169922] RIP  [<ffffffff81710382>] mutex_lock+0x12/0x2f
[  112.175405]  RSP <ffff880422357b10>
[  112.178881] CR2: 0000000000000060
[  112.182208] ---[ end trace 00e5da911f36281b ]---

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https://bugs.launchpad.net/bugs/1276705

Title:
  Kernel 3.13 fail to boot with LSI SAS1068E (Dell SAS 6/iR)

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  We have recently upgraded an Dell R300 server to Trusty (was running
  fine in precise), and after upgrade it fail to boot.

  It is an issue with the SAS controller during the initilisation. It
  fail to detect the disk, we have the following error in console log:

  [   36.539955] scsi4: error handler thread failed to spawn, error = -12
  [   36.552694] mptsas: ioc0: WARNING - Unable to register controller with SCSI subsystem

  After this error, initramfs drop to a shell complaining that rootfs is
  not found. No disk is seen at all (cat /proc/partition only show sr0 -
  cdrom drive).

  We have this issue with two different server (both R300, both Dell SAS
  6/iR controller and same hardware).

  We don't have this issue with another Dell server (R310, Dell PERC
  H200).

  We also tester with old kernel (generic, 3.2.0-58.88), it is working.

  Those server need a greater rootdelay (probably #579572), so we have
  rootdelay=45. If we remove rootdelay=45, then disk are correctly
  recognized ! (but few second too late, initramfs dropped to a shell.
  Pressing control-D resume normal boot)

  So the issue is that with the (mandatory) rootdelay greater that 30
  (default value I think), the disk are not detected due to the error
  shown above. This is a regression since those server worked in precise
  (and work with precise old kernel).

  
  System information

  * Dell R300 with Dell SAS 6/iR controller
  * Ubuntu Trusty Tahr (14.04)
  * Running arch: x86_64
  * Kernel version: 3.13.0-7-generic  (dpkg version : 3.13.0-7.25)
  * Kernel command line: BOOT_IMAGE=/vmlinuz-3.13.0-7-generic root=UUID=174e14b5-46fc-479b-9f94-05cb33c75ac9 ro rootdelay=45 console=tty0 console=ttyS1,57600 quiet
  * uname -a: Linux frtls-perf01 3.13.0-7-generic #25-Ubuntu SMP Tue Feb 4 10:19:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

  
  Attached files:

  * console output when error occure.
  * dmesg when system boot (no rootdelay, need to press control-d during initramfs boot)
  * lspci -vnn

  
  Tell me if you need more informations.

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