[RELEASE BLOCKER] Call trace during nvme storage performance test in bionic/linux-azure 4.15.0-1154

[John Cabaj]

SRU Justification

[Impact]

Hypervisor only allocates interrupts to happen on a single physical GPU, which can lead to CPU soft locks when using PCI NVME under heavy load.

[Test Case]

Microsoft tested

[Where things could go wrong]

Hypervisor PCI driver may not load correctly. Patch did not apply cleanly and could lead to merge conflicts once the upstream patch is pulled in.

[Other Info]

SF: #00347669

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-azure-4.15/4.15.0-1158.173 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-bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed-bionic'.

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!

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-azure-4.15 - 4.15.0-1158.173

---------------
linux-azure-4.15 (4.15.0-1158.173) bionic; urgency=medium

  * bionic/linux-azure-4.15: 4.15.0-1158.173 -proposed tracker (LP: #1997851)

  * [RELEASE BLOCKER] Call trace during nvme storage performance test in
    bionic/linux-azure 4.15.0-1154 (LP: #1996093)
    - PCI: hv: Only reuse existing IRTE allocation for Multi-MSI

  [ Ubuntu: 4.15.0-201.212 ]

  * bionic/linux: 4.15.0-201.212 -proposed tracker (LP: #1997871)
  * Expose built-in trusted and revoked certificates (LP: #1996892)
    - [Packaging] Expose built-in trusted and revoked certificates
  * Bionic update: upstream stable patchset 2022-09-21 (LP: #1990434)
    - s390/archrandom: prevent CPACF trng invocations in interrupt context
  * BUG: scheduling while atomic: ip/1210/0x00000200 on xenial/hwe rumford
    (LP: #1995870)
    - tg3: prevent scheduling while atomic splat
  * Bionic update: upstream stable patchset 2022-10-18 (LP: #1993349)
    - bpf: Verifer, adjust_scalar_min_max_vals to always call update_reg_bounds()
    - selftests/bpf: Fix test_align verifier log patterns
    - drm/msm/dsi: Fix number of regulators for msm8996_dsi_cfg
    - platform/x86: pmc_atom: Fix SLP_TYPx bitfield mask
    - wifi: cfg80211: debugfs: fix return type in ht40allow_map_read()
    - ethernet: rocker: fix sleep in atomic context bug in neigh_timer_handler
    - kcm: fix strp_init() order and cleanup
    - serial: fsl_lpuart: RS485 RTS polariy is inverse
    - staging: rtl8712: fix use after free bugs
    - vt: Clear selection before changing the font
    - USB: serial: ftdi_sio: add Omron CS1W-CIF31 device id
    - binder: fix UAF of ref->proc caused by race condition
    - drm/i915/reg: Fix spelling mistake "Unsupport" -> "Unsupported"
    - Input: rk805-pwrkey - fix module autoloading
    - hwmon: (gpio-fan) Fix array out of bounds access
    - thunderbolt: Use the actual buffer in tb_async_error()
    - xhci: Add grace period after xHC start to prevent premature runtime suspend.
    - USB: serial: cp210x: add Decagon UCA device id
    - USB: serial: option: add support for OPPO R11 diag port
    - USB: serial: option: add Quectel EM060K modem
    - USB: serial: option: add support for Cinterion MV32-WA/WB RmNet mode
    - usb: dwc2: fix wrong order of phy_power_on and phy_init
    - USB: cdc-acm: Add Icom PMR F3400 support (0c26:0020)
    - usb-storage: Add ignore-residue quirk for NXP PN7462AU
    - s390/hugetlb: fix prepare_hugepage_range() check for 2 GB hugepages
    - s390: fix nospec table alignments
    - USB: core: Prevent nested device-reset calls
    - usb: gadget: mass_storage: Fix cdrom data transfers on MAC-OS
    - wifi: mac80211: Don't finalize CSA in IBSS mode if state is disconnected
    - net: mac802154: Fix a condition in the receive path
    - ALSA: seq: oss: Fix data-race for max_midi_devs access
    - ALSA: seq: Fix data-race at module auto-loading
    - efi: capsule-loader: Fix use-after-free in efi_capsule_write
    - wifi: iwlegacy: 4965: corrected fix for potential off-by-one overflow in
      il4965_rs_fill_link_cmd()
    - fs: only do a memory barrier for the first set_buffer_u...