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[Bug 1420575] [NEW] Ubuntu-LE lpar won't boot with vTPM enabled

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Ubuntu-LE lpar on PowerVM system doesn't boot when vTPM is enabled.
It will fail to boot, showing B200A101 reference code on the HMC.

Without vTPM, the lpar boots up just fine.

Here is the console output when attempting to activate the lpar with
vTPM enabled after which it fails to boot:

Enter Number of Running Partition (q to quit): 24
24
    Opening Virtual Terminal On Partition br13p29 . . .

 Open in progress

 Open Completed.

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          1 = SMS Menu                          5 = Default Boot List
          8 = Open Firmware Prompt              6 = Stored Boot List

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IBM IBM IBM IBM IBM IBM                             IBM IBM IBM IBM IBM IBM
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IBM IBM IBM IBM IBM IBM                             IBM IBM IBM IBM IBM IBM
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\
Elapsed time since release of system processors: 0 mins 11 secs
error: no suitable video mode found.

                        GNU GRUB  version 2.02~beta2-21

 +----------------------------------------------------------------------------+
 |*Ubuntu                                                                     |
 | Advanced options for Ubuntu                                                |
 | Ubuntu Vivid Vervet (development branch) (15.04) (on /dev/sda2)            |
 | Advanced options for Ubuntu Vivid Vervet (development branch) (15.04) (on >|
 |                                                                            |
 |                                                                            |
 |                                                                            |
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 +----------------------------------------------------------------------------+

      Use the ^ and v keys to select which entry is highlighted.
      Press enter to boot the selected OS, `e' to edit the commands
      before booting or `c' for a command-line.
   The highlighted entry will be executed automatically in 0s.

Loading Linux 3.18.0-8-generic ...
Loading initial ramdisk ...
OF stdout device is: /vdevice/vty@30000000
Preparing to boot Linux version 3.18.0-8-generic (buildd@fisher01) (gcc version 4.9.2 (Ubuntu 4.9.2-10ubuntu1) ) #9-Ubuntu SMP Mon Jan 5 22:52:15 UTC 2015 (Ubuntu 3.18.0-8.9-generic 3.18.1)
Detected machine type: 0000000000000101
Max number of cores passed to firmware: 256 (NR_CPUS = 2048)
Calling ibm,client-architecture-support... done
command line: BOOT_IMAGE=/boot/vmlinux-3.18.0-8-generic root=UUID=e3bd0893-3e9a-4aaa-924b-0becb28a184e ro splash quiet
memory layout at init:
  memory_limit : 0000000000000000 (16 MB aligned)
  alloc_bottom : 000000000b4f0000
  alloc_top    : 0000000010000000
  alloc_top_hi : 0000000010000000
  rmo_top      : 0000000010000000
  ram_top      : 0000000010000000
instantiating rtas at 0x000000000eca0000... done
instantiating sml at 0x000000000ec70000... done
prom_hold_cpus: skipped
copying OF device tree...
Building dt strings...
Building dt structure...
Device tree strings 0x000000000b500000 -> 0x000000000b5016ff
Device tree struct  0x000000000b510000 -> 0x000000000b540000
Calling quiesce...
returning from prom_init
 -> smp_release_cpus()
spinning_secondaries = 7
 <- smp_release_cpus()
 <- setup_system()
[    0.586900] Unable to handle kernel paging request for data at address 0x00000028
[    0.586921] Faulting instruction address: 0xc000000000645614
[    0.586927] Oops: Kernel access of bad area, sig: 11 [#1]
[    0.586930] SMP NR_CPUS=2048 NUMA pSeries
[    0.586936] Modules linked in:
[    0.586941] CPU: 6 PID: 1 Comm: swapper/0 Not tainted 3.18.0-8-generic #9-Ubuntu
[    0.586946] task: c000000279580000 ti: c000000279600000 task.ti: c000000279600000
[    0.586950] NIP: c000000000645614 LR: c0000000000338f0 CTR: c0000000006455c0
[    0.586954] REGS: c0000002796035f0 TRAP: 0300   Not tainted  (3.18.0-8-generic)
[    0.586958] MSR: 8000000100009033 <SF,EE,ME,IR,DR,RI,LE>  CR: 82000022  XER: 20000010
[    0.586969] CFAR: c0000000006455ec DAR: 0000000000000028 DSISR: 40000000 SOFTE: 1
GPR00: c0000000000338f0 c000000279603870 c000000001426710 c000000276902400
GPR04: 0000000000000001 c00000000b500332 c000000000a7b960 c00000000b538d9c
GPR08: 0000000000000008 0000000000000000 0000000000000000 0000000000000000
GPR12: c0000000006455c0 c00000000e7f3600 c00000000000bde8 0000000000000000
GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
GPR24: 0000000000000000 c00000000137f9a8 c000000276902800 c00000000137fa20
GPR28: c000000001474a68 c000000276902400 c00000000137f9a8 c000000276902400
[    0.587023] NIP [c000000000645614] tpm_ibmvtpm_get_desired_dma+0x54/0x70
[    0.587029] LR [c0000000000338f0] vio_bus_probe+0x2c0/0x480
[    0.587032] Call Trace:
[    0.587035] [c000000279603870] [c00000027fffeb00] 0xc00000027fffeb00 (unreliable)
[    0.587041] [c0000002796038a0] [c0000000000338f0] vio_bus_probe+0x2c0/0x480
[    0.587047] [c000000279603940] [c00000000065363c] driver_probe_device+0xec/0x4a0
[    0.587052] [c0000002796039d0] [c000000000653bac] __driver_attach+0x11c/0x120
[    0.587057] [c000000279603a10] [c00000000065055c] bus_for_each_dev+0x9c/0x110
[    0.587062] [c000000279603a60] [c000000000652dbc] driver_attach+0x3c/0x60
[    0.587068] [c000000279603a90] [c000000000652768] bus_add_driver+0x208/0x320
[    0.587072] [c000000279603b20] [c00000000065486c] driver_register+0x9c/0x180
[    0.587077] [c000000279603b90] [c000000000032078] __vio_register_driver+0x78/0xd0
[    0.587082] [c000000279603c10] [c000000000de5fd8] ibmvtpm_module_init+0x2c/0x40
[    0.587089] [c000000279603c30] [c00000000000b4dc] do_one_initcall+0x12c/0x280
[    0.587094] [c000000279603d00] [c000000000d94174] kernel_init_freeable+0x25c/0x33c
[    0.587099] [c000000279603dc0] [c00000000000be0c] kernel_init+0x2c/0x140
[    0.587104] [c000000279603e30] [c000000000009568] ret_from_kernel_thread+0x5c/0x74
[    0.587109] Instruction dump:
[    0.587111] e93f00e8 2fa90000 419e0024 e9290120 80690028 3c630001 38210030 e8010010
[    0.587119] ebe1fff8 7c0803a6 4e800020 39200000 <80690028> 3c630001 38210030 e8010010
[    0.587131] ---[ end trace abfb9dc75b29309e ]---
[    0.589187]
[    2.589254] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[    2.589254]
[    2.593773] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[    2.593773]

These are the patches needed, base on the error I see from the bug
report.  However, please note that I have not tested them to confirm.

> http://sourceforge.net/p/tpmdd/mailman/message/32960386/

This was accepted upstream.  However, as you mentioned that you couldn't
find it in the 3.19, I'll have to follow up with you on this.

> http://sourceforge.net/p/tpmdd/mailman/message/33351549/

This one is in the process of getting accepted.  It was just reviewed,
but I need reformat the patch to resubmit it.

>Hmm, if it was accepted before 3.19 it should appear in 3.19, unless it was reverted, which doesn't seem to be the case.
Right, it "should" appear in 3.19, but not necessarily.  In this case, the patch wouldn't be available in the 3.19 kernel.  The TPM maintainers bundled the vtpm patch with many others and somehow missed the last merge window in submitting to Linus.  They had then resubmitted a pull request on Jan 17, 2015.  Therefore, the patch will be available in 3.20 instead.

The fix is now available in the git repository at:
https://github.com/PeterHuewe/linux-tpmdd/commit/84eb186bc37c0900b53077ca21cf6dd15823a232

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: architecture-ppc64le bot-comment bugnameltc-121407 severity-critical targetmilestone-inin1504
-- 
Ubuntu-LE lpar won't boot with vTPM enabled
https://bugs.launchpad.net/bugs/1420575
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