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[Bug 1425202] Re: ISST-LTE: Ubuntu 15.04 lpar crashes at iommu_free_table after adapter DLPAR operation

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1425202@xxxxxxxxxxxxxxxxxx>
Date: Tue, 24 Mar 2015 02:28:01 -0000
Reply-to: Bug 1425202 <1425202@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
This bug was fixed in the package linux - 3.19.0-10.10

---------------
linux (3.19.0-10.10) vivid; urgency=low

  [ Andy Whitcroft ]

  * [Packaging] control -- make element ordering deterministic
  * [Config] allow dracult to support initramfs as well
    - LP: #1109029
  * [Packaging] generate live watchdog blacklists
    - LP: #1432837

  [ Leann Ogasawara ]

  * [Config] CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT=y
    - LP: #1397860
  * rebase to v3.19.2

  [ Upstream Kernel Changes ]

  * thinkpad_acpi: support new BIOS version string pattern
    - LP: #1417915
  * arm64: Invalidate the TLB corresponding to intermediate page table
    levels
    - LP: #1432546
  * perf tools: Support parsing parameterized events
    - LP: #1430341
  * perf tools: Extend format_alias() to include event parameters
    - LP: #1430341
  * perf Documentation: Add event parameters
    - LP: #1430341
  * perf tools: Document parameterized and symbolic events
    - LP: #1430341
  * perf: provide sysfs_show for struct perf_pmu_events_attr
    - LP: #1430341
  * perf: add PMU_EVENT_ATTR_STRING() helper
    - LP: #1430341
  * perf: define EVENT_DEFINE_RANGE_FORMAT_LITE helper
    - LP: #1430341
  * powerpc/perf/hv-24x7: parse catalog and populate sysfs with events
    - LP: #1430341
  * powerpc/perf/{hv-gpci, hv-common}: generate requests with counters
    annotated
    - LP: #1430341
  * powerpc/perf/hv-gpci: add the remaining gpci requests
    - LP: #1430341
  * powerpc/perf/hv-24x7: Document sysfs event description entries
    - LP: #1430341
  * powerpc/iommu: Remove IOMMU device references via bus notifier
    - LP: #1425202
  * powerpc/pseries: Fix endian problems with LE migration
    - LP: #1428351
  * intel_idle: support additional Broadwell model
    - LP: #1400970
  * tools/power turbostat: support additional Broadwell model
    - LP: #1400970
  * KVM: x86: flush TLB when D bit is manually changed.
    - LP: #1397860
  * Optimize TLB flush in kvm_mmu_slot_remove_write_access.
    - LP: #1397860
  * KVM: Add generic support for dirty page logging
    - LP: #1397860
  * KVM: x86: switch to kvm_get_dirty_log_protect
    - LP: #1397860
  * KVM: Rename kvm_arch_mmu_write_protect_pt_masked to be more generic for
    log dirty
    - LP: #1397860
  * KVM: MMU: Add mmu help functions to support PML
    - LP: #1397860
  * KVM: MMU: Explicitly set D-bit for writable spte.
    - LP: #1397860
  * KVM: x86: Change parameter of kvm_mmu_slot_remove_write_access
    - LP: #1397860
  * KVM: x86: Add new dirty logging kvm_x86_ops for PML
    - LP: #1397860
  * KVM: VMX: Add PML support in VMX
    - LP: #1397860
  * HID: multitouch: add support of clickpads
  * HID: multitouch: Add support for button type usage

  [ Upstream Kernel Changes ]

  * rebase to v3.19.2
    - LP: #1428947
 -- Andy Whitcroft <apw@xxxxxxxxxxxxx>   Mon, 23 Mar 2015 15:28:16 +0000

** Changed in: linux (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1425202

Title:
  ISST-LTE: Ubuntu 15.04 lpar crashes at iommu_free_table after adapter
  DLPAR operation

Status in linux package in Ubuntu:
  Fix Released

Bug description:
  Description:
  ------------------------

  I have installed all packages required for DLPAR in Ubuntu 15.04. When
  i am trying to do network adapter DLPAR operation, lpar crashes.

  root@highlp1:/etc/network# [  454.482742] kernel BUG at /build/buildd/linux-3.18.0/arch/powerpc/kernel/iommu.c:732!
  cpu 0xa: Vector: 700 (Program Check) at [c00000016e67f850]
      pc: c000000000040484: iommu_free_table+0x64/0x140
      lr: c00000000004047c: iommu_free_table+0x5c/0x140
      sp: c00000016e67fad0
     msr: 8000000000029033
    current = 0xc00000016b4277e0
    paca    = 0xc000000007b35a00   softe: 0        irq_happened: 0x01
      pid   = 3288, comm = drmgr
  kernel BUG at /build/buildd/linux-3.18.0/arch/powerpc/kernel/iommu.c:732!
  enter ? for help
  [c00000016e67fb40] c000000000083428 iommu_reconfig_notifier+0x88/0x160
  [c00000016e67fb70] c0000000000dab38 notifier_call_chain+0x98/0x100
  [c00000016e67fbc0] c0000000000db244 __blocking_notifier_call_chain+0x74/0xe0
  [c00000016e67fc10] c000000000877290 of_reconfig_notify+0x40/0xa0
  [c00000016e67fc40] c000000000877cdc of_detach_node+0x8c/0xb0
  [c00000016e67fc70] c0000000000809b8 ofdt_write+0x1f8/0x7b0
  [c00000016e67fd40] c0000000003459f0 proc_reg_write+0xb0/0x110
  [c00000016e67fd90] c0000000002b950c vfs_write+0xdc/0x260
  [c00000016e67fde0] c0000000002ba0ac SyS_write+0x6c/0x110
  [c00000016e67fe30] c00000000000927c syscall_exit+0x0/0x7c
  --- Exception: c01 (System Call) at 00001000001ba638
  SP (3fffdba63300) is in userspace
  a:mon>
  a:mon>
  a:mon>
  a:mon> t
  [c00000016e67fb40] c000000000083428 iommu_reconfig_notifier+0x88/0x160
  [c00000016e67fb70] c0000000000dab38 notifier_call_chain+0x98/0x100
  [c00000016e67fbc0] c0000000000db244 __blocking_notifier_call_chain+0x74/0xe0
  [c00000016e67fc10] c000000000877290 of_reconfig_notify+0x40/0xa0
  [c00000016e67fc40] c000000000877cdc of_detach_node+0x8c/0xb0
  [c00000016e67fc70] c0000000000809b8 ofdt_write+0x1f8/0x7b0
  [c00000016e67fd40] c0000000003459f0 proc_reg_write+0xb0/0x110
  [c00000016e67fd90] c0000000002b950c vfs_write+0xdc/0x260
  [c00000016e67fde0] c0000000002ba0ac SyS_write+0x6c/0x110
  [c00000016e67fe30] c00000000000927c syscall_exit+0x0/0x7c
  --- Exception: c01 (System Call) at 00001000001ba638
  SP (3fffdba63300) is in userspace

  a:mon> e
  cpu 0xa: Vector: 700 (Program Check) at [c00000016e67f850]
      pc: c000000000040484: iommu_free_table+0x64/0x140
      lr: c00000000004047c: iommu_free_table+0x5c/0x140
      sp: c00000016e67fad0
     msr: 8000000000029033
    current = 0xc00000016b4277e0
    paca    = 0xc000000007b35a00   softe: 0        irq_happened: 0x01
      pid   = 3288, comm = drmgr
  kernel BUG at /build/buildd/linux-3.18.0/arch/powerpc/kernel/iommu.c:732!

  
  Original patch posted https://lists.ozlabs.org/pipermail/linuxppc-dev/2015-February/125068.html

  Updated patch posted as: https://lists.ozlabs.org/pipermail/linuxppc-
  dev/2015-February/125133.html

  Will update again once merged into mpe's tree.

  -Nish

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