sbsa watchdog crashes thunderx2 system

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1755595

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

This bug was fixed in the package linux - 4.15.0-13.14

---------------
linux (4.15.0-13.14) bionic; urgency=medium

  * linux: 4.15.0-13.14 -proposed tracker (LP: #1756408)

  * devpts: handle bind-mounts (LP: #1755857)
    - SAUCE: devpts: hoist out check for DEVPTS_SUPER_MAGIC
    - SAUCE: devpts: resolve devpts bind-mounts
    - SAUCE: devpts: comment devpts_mntget()
    - SAUCE: selftests: add devpts selftests

  * [bionic][arm64] d-i: add hisi_sas_v3_hw to scsi-modules (LP: #1756103)
    - d-i: add hisi_sas_v3_hw to scsi-modules

  * [Bionic][ARM64] enable ROCE and HNS3 driver support for hip08 SoC
    (LP: #1756097)
    - RDMA/hns: Refactor eq code for hip06
    - RDMA/hns: Add eq support of hip08
    - RDMA/hns: Add detailed comments for mb() call
    - RDMA/hns: Add rq inline data support for hip08 RoCE
    - RDMA/hns: Update the usage of sr_max and rr_max field
    - RDMA/hns: Set access flags of hip08 RoCE
    - RDMA/hns: Filter for zero length of sge in hip08 kernel mode
    - RDMA/hns: Fix QP state judgement before sending work requests
    - RDMA/hns: Assign dest_qp when deregistering mr
    - RDMA/hns: Fix endian problems around imm_data and rkey
    - RDMA/hns: Assign the correct value for tx_cqn
    - RDMA/hns: Create gsi qp in hip08
    - RDMA/hns: Add gsi qp support for modifying qp in hip08
    - RDMA/hns: Fill sq wqe context of ud type in hip08
    - RDMA/hns: Assign zero for pkey_index of wc in hip08
    - RDMA/hns: Update the verbs of polling for completion
    - RDMA/hns: Set the guid for hip08 RoCE device
    - net: hns3: Refactor of the reset interrupt handling logic
    - net: hns3: Add reset service task for handling reset requests
    - net: hns3: Refactors the requested reset & pending reset handling code
    - net: hns3: Add HNS3 VF IMP(Integrated Management Proc) cmd interface
    - net: hns3: Add mailbox support to VF driver
    - net: hns3: Add HNS3 VF HCL(Hardware Compatibility Layer) Support
    - net: hns3: Add HNS3 VF driver to kernel build framework
    - net: hns3: Unified HNS3 {VF|PF} Ethernet Driver for hip08 SoC
    - net: hns3: Add mailbox support to PF driver
    - net: hns3: Change PF to add ring-vect binding & resetQ to mailbox
    - net: hns3: Add mailbox interrupt handling to PF driver
    - net: hns3: add support to query tqps number
    - net: hns3: add support to modify tqps number
    - net: hns3: change the returned tqp number by ethtool -x
    - net: hns3: free the ring_data structrue when change tqps
    - net: hns3: get rss_size_max from configuration but not hardcode
    - net: hns3: add a mask initialization for mac_vlan table
    - net: hns3: add vlan offload config command
    - net: hns3: add ethtool related offload command
    - net: hns3: add handling vlan tag offload in bd
    - net: hns3: cleanup mac auto-negotiation state query
    - net: hns3: fix for getting auto-negotiation state in hclge_get_autoneg
    - net: hns3: add support for set_pauseparam
    - net: hns3: add support to update flow control settings after autoneg
    - net: hns3: add Asym Pause support to phy default features
    - net: hns3: add support for querying advertised pause frame by ethtool ethx
    - net:...

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-artful' to 'verification-done-artful'. If the problem still exists, change the tag 'verification-needed-artful' to 'verification-failed-artful'.

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!

Tested the -proposed kernel on boomer with 6.2 fw version.

ubuntu@boomer:~$ dmesg | grep sbsa
ubuntu@boomer:~$ sudo modprobe sbsa_gwdt
ubuntu@boomer:~$ dmesg | grep sbsa
ubuntu@boomer:~$ lsmod | grep sbsa
sbsa_gwdt 16384 0
ubuntu@boomer:~$ ls /dev/watchdog
ls: cannot access '/dev/watchdog': No such file or directory
ubuntu@boomer:~$

Looks like sbsa is not exposed by fw6.2 on this thunderx2 system. No kernel crash was observed.

This bug was fixed in the package linux - 4.13.0-39.44

---------------
linux (4.13.0-39.44) artful; urgency=medium

  * linux: 4.13.0-39.44 -proposed tracker (LP: #1761456)

  * intel-microcode 3.20180312.0 causes lockup at login screen(w/ linux-
    image-4.13.0-37-generic) (LP: #1759920) // CVE-2017-5715 (Spectre v2
    Intel) // CVE-2017-5754
    - x86/mm: Reinitialize TLB state on hotplug and resume

  * intel-microcode 3.20180312.0 causes lockup at login screen(w/ linux-
    image-4.13.0-37-generic) (LP: #1759920) // CVE-2017-5715 (Spectre v2 Intel)
    - Revert "x86/mm: Only set IBPB when the new thread cannot ptrace current
      thread"
    - x86/speculation: Use Indirect Branch Prediction Barrier in context switch

  * DKMS driver builds fail with: Cannot use CONFIG_STACK_VALIDATION=y, please
    install libelf-dev, libelf-devel or elfutils-libelf-devel (LP: #1760876)
    - [Packaging] include the retpoline extractor in the headers

  * retpoline hints: primary infrastructure and initial hints (LP: #1758856)
    - [Packaging] retpoline-extract: flag *0xNNN(%reg) branches
    - x86/speculation, objtool: Annotate indirect calls/jumps for objtool
    - x86/speculation, objtool: Annotate indirect calls/jumps for objtool on 32bit
    - x86/paravirt, objtool: Annotate indirect calls
    - [Packaging] retpoline -- add safe usage hint support
    - [Packaging] retpoline-check -- only report additions
    - [Packaging] retpoline -- widen indirect call/jmp detection
    - [Packaging] retpoline -- elide %rip relative indirections
    - [Packaging] retpoline -- clear hint information from packages
    - KVM: x86: Make indirect calls in emulator speculation safe
    - KVM: VMX: Make indirect call speculation safe
    - x86/boot, objtool: Annotate indirect jump in secondary_startup_64()
    - SAUCE: early/late -- annotate indirect calls in early/late initialisation
      code
    - SAUCE: vga_set_mode -- avoid jump tables
    - [Config] retpoline -- switch to new format
    - [Packaging] retpoline hints -- handle missing files when RETPOLINE not
      enabled
    - [Packaging] final-checks -- remove check for empty retpoline files

  * retpoline: ignore %cs:0xNNN constant indirections (LP: #1752655)
    - [Packaging] retpoline -- elide %cs:0xNNNN constants on i386

  * zfs system process hung on container stop/delete (LP: #1754584)
    - SAUCE: Fix non-prefaulted page deadlock (LP: #1754584)

  * zfs-linux 0.6.5.11-1ubuntu5 ADT test failure with linux 4.15.0-1.2
    (LP: #1737761)
    - SAUCE: (noup) Update zfs to 0.6.5.11-1ubuntu3.2

  * AT_BASE_PLATFORM in AUXV is absent on kernels available on Ubuntu 17.10
    (LP: #1759312)
    - powerpc/64s: Fix NULL AT_BASE_PLATFORM when using DT CPU features

  * btrfs and tar sparse truncate archives (LP: #1757565)
    - Btrfs: move definition of the function btrfs_find_new_delalloc_bytes
    - Btrfs: fix reported number of inode blocks after buffered append writes

  * efifb broken on ThunderX-based Gigabyte nodes (LP: #1758375)
    - drivers/fbdev/efifb: Allow BAR to be moved instead of claiming it

  * Intel i40e PF reset due to incorrect MDD detection (continues...)
    (LP: #1723127)
    - i40e/i40ev...