arm-smmu Unhandled context fault

Bug #1694506 reported by dann frazier on 2017-05-30
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
dann frazier
dann frazier

Bug Description

When booting hwe-z on a Cavium ThunderX system in ACPI mode, the on-board NICs don't come up, and the console emits messages like:

[ 78.986867] arm-smmu Unhandled context fault: fsr=0x402, iova=0x1f60e8d000, fsynr=0x40090, cb=4
[ 78.997030] arm-smmu Unhandled context fault: fsr=0x402, iova=0x1f4bbdd000, fsynr=0x50090, cb=5
[ 79.185826] arm-smmu Unhandled context fault: fsr=0x402, iova=0x1f60e8e000, fsynr=0x40090, cb=4
[ 79.195990] arm-smmu Unhandled context fault: fsr=0x402, iova=0x1f4bbde000, fsynr=0x50090, cb=5

[Test Case]
dmesg | grep "Unhandled context fault"
Onboard NICs work (can ssh into it).

[Regression Risk]
The upstream fix changes are restricted to the NIC driver for this SoC, so regression risk can be mitigated by direct testing. Non-ACPI mode was also tested to make sure we're not breaking DT-based platforms while fixing this for ACPI-based platforms.

dann frazier (dannf) on 2017-05-30
Changed in linux (Ubuntu Zesty):
status: New → In Progress
Changed in linux (Ubuntu):
status: New → In Progress
Changed in linux (Ubuntu Zesty):
assignee: nobody → dann frazier (dannf)
Changed in linux (Ubuntu):
importance: Undecided → High
Changed in linux (Ubuntu Zesty):
importance: Undecided → High
Changed in linux (Ubuntu):
assignee: nobody → dann frazier (dannf)
Raghuram Kota (rkota) on 2017-05-30
tags: added: acpi arm
tags: added: arm64 hs-arm64
removed: arm
Seth Forshee (sforshee) on 2017-06-01
Changed in linux (Ubuntu):
status: In Progress → Fix Committed
Changed in linux (Ubuntu Zesty):
status: In Progress → Fix Committed

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

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 for documentation how to enable and use -proposed. Thank you!

tags: added: verification-needed-zesty
dann frazier (dannf) wrote :

ubuntu@grotian:~$ cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-4.10.0-23-generic root=UUID=4144290b-8fa2-44f6-8c5d-dc0c4250e962 ro acpi=on
ubuntu@grotian:~$ cat /proc/version
Linux version 4.10.0-23-generic (buildd@bos01-arm64-039) (gcc version 6.3.0 20170406 (Ubuntu/Linaro 6.3.0-12ubuntu2) ) #25-Ubuntu SMP Fri Jun 9 09:36:27 UTC 2017
ubuntu@grotian:~$ dmesg | grep "Unhandled context fault"

tags: added: verification-done-zesty
removed: verification-needed-zesty
Launchpad Janitor (janitor) wrote :
Download full text (19.7 KiB)

This bug was fixed in the package linux - 4.10.0-26.30

linux (4.10.0-26.30) zesty; urgency=low

  * linux: 4.10.0-26.30 -proposed tracker (LP: #1700528)

  * CVE-2017-1000364
    - Revert "UBUNTU: SAUCE: mm: Only expand stack if guard area is hit"
    - Revert "mm: do not collapse stack gap into THP"
    - Revert "mm: enlarge stack guard gap"
    - mm: larger stack guard gap, between vmas
    - mm: fix new crash in unmapped_area_topdown()
    - Allow stack to grow up to address space limit

linux (4.10.0-25.29) zesty; urgency=low

  * linux: 4.10.0-25.29 -proposed tracker (LP: #1699028)

  * CVE-2017-1000364
    - SAUCE: mm: Only expand stack if guard area is hit

  * CVE-2017-9074
    - ipv6: Prevent overrun when parsing v6 header options
    - ipv6: Check ip6_find_1stfragopt() return value properly.

  * [Zesty] QDF2400 ARM64 server - NMI watchdog: BUG: soft lockup - CPU#8 stuck
    for 22s! (LP: #1680549)
    - iommu/dma: Stop getting dma_32bit_pfn wrong
    - iommu/dma: Implement PCI allocation optimisation
    - iommu/dma: Convert to address-based allocation
    - iommu/dma: Clean up MSI IOVA allocation
    - iommu/dma: Plumb in the per-CPU IOVA caches
    - iommu/iova: Fix underflow bug in __alloc_and_insert_iova_range

  * Zesty update to 4.10.17 stable release (LP: #1692898)
    - xen: adjust early dom0 p2m handling to xen hypervisor behavior
    - target: Fix compare_and_write_callback handling for non GOOD status
    - target/fileio: Fix zero-length READ and WRITE handling
    - iscsi-target: Set session_fall_back_to_erl0 when forcing reinstatement
    - usb: xhci: bInterval quirk for TI TUSB73x0
    - usb: host: xhci: print correct command ring address
    - USB: serial: ftdi_sio: add device ID for Microsemi/Arrow SF2PLUS Dev Kit
    - USB: Proper handling of Race Condition when two USB class drivers try to
      call init_usb_class simultaneously
    - USB: Revert "cdc-wdm: fix "out-of-sync" due to missing notifications"
    - staging: vt6656: use off stack for in buffer USB transfers.
    - staging: vt6656: use off stack for out buffer USB transfers.
    - staging: gdm724x: gdm_mux: fix use-after-free on module unload
    - staging: wilc1000: Fix problem with wrong vif index
    - staging: comedi: jr3_pci: fix possible null pointer dereference
    - staging: comedi: jr3_pci: cope with jiffies wraparound
    - usb: misc: add missing continue in switch
    - usb: gadget: legacy gadgets are optional
    - usb: Make sure usb/phy/of gets built-in
    - usb: hub: Fix error loop seen after hub communication errors
    - usb: hub: Do not attempt to autosuspend disconnected devices
    - x86/boot: Fix BSS corruption/overwrite bug in early x86 kernel startup
    - selftests/x86/ldt_gdt_32: Work around a glibc sigaction() bug
    - x86, pmem: Fix cache flushing for iovec write < 8 bytes
    - um: Fix PTRACE_POKEUSER on x86_64
    - perf/x86: Fix Broadwell-EP DRAM RAPL events
    - KVM: x86: fix user triggerable warning in kvm_apic_accept_events()
    - KVM: arm/arm64: fix races in kvm_psci_vcpu_on
    - arm64: KVM: Fix decoding of Rt/Rt2 when trapping AArch32 CP accesses
    - block: fix blk_integrity_register to use templ...

Changed in linux (Ubuntu Zesty):
status: Fix Committed → Fix Released
Changed in linux (Ubuntu):
status: Fix Committed → Fix Released
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