HP ProLiant m400 nic fails to initialize when booted w/ debug

[dann frazier]

[Impact]
On the majority of boots, the mlx4 driver will fail to initialize, resulting in no network connectivity. This only occurs if debug level
logging to the serial console is enabled - which is not the default in Ubuntu.

[Test Case]
Enable debug logging:
  $ echo 'setenv bootargs "$bootargs debug"' > /etc/flash-kernel/ubootenv.d/debug
  $ sudo flash-kernel
And reboot.

[Regression Risk]
The MSI code being modified in question is only used on X-Gene systems, so risk to other systems is insignificant. In addition, the code being removed are just debug statements that aren't emitted by default today in Ubuntu, so even for X-Gene systems it is a minimal risk.

[Brad Figg (brad-figg)]

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-trusty' to 'verification-done-trusty'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Brad Figg (brad-figg)]

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-utopic' to 'verification-done-utopic'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Craig Magina (craig.magina)]

Reproduced the bug with the current updates kernel, updated to the proposed kernel and the bug was no longer reproducible.

[Craig Magina (craig.magina)]

Utopic kernel also tested in the same manner as the trusty kernel.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 3.13.0-40.69

---------------
linux (3.13.0-40.69) trusty; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - re-used previous tracking bug

  [ Upstream Kernel Changes ]

  * regmap: fix kernel hang on regmap_bulk_write with zero val_count.

linux (3.13.0-40.68) trusty; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1388943
  * SAUCE: DEP8 test to run our regression tests
    - LP: #1385330
  * SAUCE: The very first thing we should do when testing is make sure we
    are testing the correct kernel
    - LP: #1385330

  [ dann frazier ]

  * [Config] Disable CONFIG_IPMI_SI_PROBE_DEFAULTS on armhf and arm64
    - LP: #1388952

  [ Duc Dang ]

  * SAUCE: (no-up) [PCIE] APM X-Gene: Remove debug messages in MSI
    interrupt handler path.
    - LP: #1382244
  * SAUCE: (no-up) PCI: X-Gene: Fix max payload size and phantom function
    configuration
    - LP: #1386261

  [ McAulay, Alistair ]

  * SAUCE: drm/i915: Rework GPU reset sequence to match driver load & thaw
    - LP: #1384469

  [ Timo Aaltonen ]

  * SAUCE: i915_bdw: Fix cherry-pick typo
    - LP: #1384469

  [ Upstream Kernel Changes ]

  * Revert "mac80211: disable uAPSD if all ACs are under ACM"
    - LP: #1381234
  * Revert "iwlwifi: dvm: don't enable CTS to self"
    - LP: #1381234
  * Revert "lzo: properly check for overruns"
    - LP: #1387886
  * drm/i915: provide interface for audio driver to query cdclk
    - LP: #1381168
  * regulatory: add NUL to alpha2
    - LP: #1381234
  * percpu: fix pcpu_alloc_pages() failure path
    - LP: #1381234
  * percpu: perform tlb flush after pcpu_map_pages() failure
    - LP: #1381234
  * cgroup: reject cgroup names with '\n'
    - LP: #1381234
  * vfs: add d_is_dir()
    - LP: #1381234
  * CIFS: Fix directory rename error
    - LP: #1381234
  * usb: phy: twl4030-usb: Fix lost interrupts after ID pin goes down
    - LP: #1381234
  * rtlwifi: rtl8192cu: Add new ID
    - LP: #1381234
  * CIFS: Fix wrong restart readdir for SMB1
    - LP: #1381234
  * CIFS: Fix wrong filename length for SMB2
    - LP: #1381234
  * ahci: Add Device IDs for Intel 9 Series PCH
    - LP: #1381234
  * ata_piix: Add Device IDs for Intel 9 Series PCH
    - LP: #1381234
  * USB: zte_ev: fix removed PIDs
    - LP: #1381234
  * USB: ftdi_sio: add support for NOVITUS Bono E thermal printer
    - LP: #1381234
  * USB: sierra: avoid CDC class functions on "68A3" devices
    - LP: #1381234
  * USB: sierra: add 1199:68AA device ID
    - LP: #1381234
  * iommu/arm-smmu: fix programming of SMMU_CBn_TCR for stage 1
    - LP: #1381234
  * iommu/arm-smmu: remove pgtable_page_{c,d}tor()
    - LP: #1381234
  * usb: gadget: fusb300_udc.h: Fix typo in include guard
    - LP: #1381234
  * usb: phy: tegra: Avoid use of sizeof(void)
    - LP: #1381234
  * arm64: use irq_set_affinity with force=false when migrating irqs
    - LP: #1381234
  * block: Fix dev_t minor allocation lifetime
    - LP: #1381234
  * usb: dwc3: core: fix order of PM runtime calls
    - LP: #1381234
  * usb: dwc3: core: fix ordering for PHY suspend
    - LP: #1381234
  * usb: dwc3: omap: fix ordering for runtime pm calls
    - LP: #1381234
  * ...

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 3.16.0-25.33

---------------
linux (3.16.0-25.33) utopic; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1389170

  [ dann frazier ]

  * [Config] Disable CONFIG_IPMI_SI_PROBE_DEFAULTS on armhf and arm64
    - LP: #1388952

  [ Duc Dang ]

  * SAUCE: (no-up) [PCIE] APM X-Gene: Remove debug messages in MSI
    interrupt handler path.
    - LP: #1382244
  * SAUCE: (no-up) PCI: X-Gene: Fix max payload size and phantom function
    configuration
    - LP: #1386261

  [ Tim Gardner ]

  * Revert "SAUCE: (no-up) PCI: Increase BAR size quirk for IBM ipr SAS
    Crocodile adapters"
    - LP: #1387813
  * [Config] CONFIG_SOUND_OSS_CORE_PRECLAIM=n
    - LP: #1385510
  * [Debian] install usbipd
    - LP: #898003
  * [Debian] Fix linux-doc dangling symlinks
    - LP: #661306

  [ Upstream Kernel Changes ]

  * Revert "macvlan: simplify the structure port"
    - LP: #1381490
  * Revert "net/macb: add pinctrl consumer support"
    - LP: #1381490
  * Revert "lzo: properly check for overruns"
    - LP: #1387813
  * Revert "ath9k_hw: reduce ANI firstep range for older chips"
    - LP: #1387813
  * ASoC: ssm2602: do not hardcode type to SSM2602
    - LP: #1379785
  * ASoC: core: fix possible ZERO_SIZE_PTR pointer dereferencing error.
    - LP: #1379785
  * perf: fix perf bug in fork()
    - LP: #1379785
  * mm: memcontrol: do not iterate uninitialized memcgs
    - LP: #1379785
  * mm: migrate: Close race between migration completion and mprotect
    - LP: #1379785
  * i2c: qup: Fix order of runtime pm initialization
    - LP: #1379785
  * i2c: rk3x: fix 0 length write transfers
    - LP: #1379785
  * ACPI / i915: Update the condition to ignore firmware backlight change
    request
    - LP: #1379785
  * cpufreq: integrator: fix integrator_cpufreq_remove return type
    - LP: #1379785
  * cpufreq: pcc-cpufreq: Fix wait_event() under spinlock
    - LP: #1379785
  * md/raid5: disable 'DISCARD' by default due to safety concerns.
    - LP: #1379785
  * drm/i915: Flush the PTEs after updating them before suspend
    - LP: #1379785
  * Fix problem recognizing symlinks
    - LP: #1379785
  * init/Kconfig: Fix HAVE_FUTEX_CMPXCHG to not break up the EXPERT menu
    - LP: #1379785
  * ring-buffer: Fix infinite spin in reading buffer
    - LP: #1379785
  * uas: Only complain about missing sg if all other checks succeed
    - LP: #1379785
  * uas: Log a warning when we cannot use uas because the hcd lacks streams
    - LP: #1379785
  * uas: Disable uas on ASM1051 devices
    - LP: #1379785
  * uas: Add missing le16_to_cpu calls to asm1051 / asm1053 usb-id check
    - LP: #1379785
  * x86, ia64: Move EFI_FB vga_default_device() initialization to
    pci_vga_fixup()
    - LP: #1379785
  * vgaarb: Don't default exclusively to first video device with mem+io
    - LP: #1379785
  * mm, thp: move invariant bug check out of loop in __split_huge_page_map
    - LP: #1379785
  * mm: numa: Do not mark PTEs pte_numa when splitting huge pages
    - LP: #1379785
  * media: vb2: fix VBI/poll regression
    - LP: #1379785
  * jiffies: Fix timeval conversion to jiffies
    - LP: #1379785
  * Linux 3.16.5
    - LP: #1379785
 ...