arm64: snapdragon: WARNING: CPU: 0 PID: 1 arch/arm64/kernel/setup.c:271 reserve_memblock_reserved_regions

Bug #1797139 reported by Paolo Pisati on 2018-10-10
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Undecided
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Bionic
Undecided
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Cosmic
Undecided
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Bug Description

Impact:

Upon boot on a dragonboard410c using a recent Bionic or Cosmic kernel:

...
[ 0.049776] WARNING: CPU: 0 PID: 1 at arch/arm64/kernel/setup.c:271 reserve_memblock_reserved_regions+0xe0/0x148
[ 0.049783] Modules linked in:
[ 0.049797] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.18.0-8-snapdragon #9
[ 0.049803] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT)
[ 0.049813] pstate: 80400005 (Nzcv daif +PAN -UAO)
[ 0.049821] pc : reserve_memblock_reserved_regions+0xe0/0x148
[ 0.049829] lr : reserve_memblock_reserved_regions+0xd8/0x148
[ 0.049836] sp : ffff000008033d40
[ 0.049841] x29: ffff000008033d40 x28: 0000000000000000
[ 0.049852] x27: ffff000009410584 x26: ffff000009577018
[ 0.049863] x25: 0000000000000000 x24: 0000000000488020
[ 0.049874] x23: 00000000bfffffff x22: ffff0000090e8928
[ 0.049885] x21: ffff000008ffb578 x20: ffff000009a48708
[ 0.049896] x19: ffff80003a409280 x18: 0000000000000000
[ 0.049906] x17: 0000000000000000 x16: 0000000000000000
[ 0.049917] x15: ffffffffffffffff x14: ffff000009a48708
[ 0.049927] x13: 0000000000000000 x12: 0000000000000028
[ 0.049938] x11: 0101010101010101 x10: 7f7f7f7f7f7f7f7f
[ 0.049949] x9 : 0000000000000000 x8 : ffff80003a409300
[ 0.049959] x7 : 0000000000000000 x6 : 000000000000003f
[ 0.049969] x5 : 0000000000000040 x4 : ffff80003d9ffc70
[ 0.049980] x3 : 00000000bd9fffff x2 : ffff000009c241b0
[ 0.049990] x1 : 0000000000000000 x0 : 0000000000000000
[ 0.050001] Call trace:
[ 0.050010] reserve_memblock_reserved_regions+0xe0/0x148
[ 0.050021] do_one_initcall+0x54/0x1e0
[ 0.050031] kernel_init_freeable+0x254/0x2f8
[ 0.050043] kernel_init+0x18/0x110
[ 0.050052] ret_from_fork+0x10/0x18
[ 0.050063] ---[ end trace dc768b294fafe4aa ]---
...

commit 50d7ba36b916 upstream ("arm64: export memblock_reserve()d regions via
/proc/iomem") backported in commit 62289841 in bionic/master, wrongly assumed that memblock_reserve() would not be used to reserve regions that aren't memory. It turns out, this is exactly what early_init_dt_reserve_memory_arch() will do if it finds a reservation
that was also carved out of the memory node.

Fix:

Apply the attached patch and recompile

The fix wad discussed here: https://www.spinics.net/lists/arm-kernel/msg675580.html

How to test:

Boot the patched kernel and check for the above WARNING in dmesg

Regression potential:

The patch didn't make it upstream yet, but the fix is very small and was tested on the lkml.

Proposing for Bionic and Cosmic.

Paolo Pisati (p-pisati) wrote :
description: updated
description: updated

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 1797139

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.

Changed in linux (Ubuntu):
status: New → Incomplete
tags: added: cosmic
Paolo Pisati (p-pisati) on 2018-10-10
Changed in linux (Ubuntu):
status: Incomplete → Invalid
status: Invalid → Confirmed
tags: added: patch
Changed in linux (Ubuntu Bionic):
status: New → Fix Committed
Brad Figg (brad-figg) wrote :

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-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!

tags: added: verification-needed-bionic
Brad Figg (brad-figg) wrote :

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

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!

tags: added: verification-needed-cosmic
Paolo Pisati (p-pisati) on 2018-10-25
Changed in linux (Ubuntu Cosmic):
status: Confirmed → Invalid
Paolo Pisati (p-pisati) on 2018-11-08
tags: added: verification-done-bionic
removed: verification-needed-bionic
Paolo Pisati (p-pisati) on 2018-11-08
tags: added: verification-done-cosmic
removed: verification-needed-cosmic
Launchpad Janitor (janitor) wrote :
Download full text (5.4 KiB)

This bug was fixed in the package linux - 4.15.0-39.42

---------------
linux (4.15.0-39.42) bionic; urgency=medium

  * linux: 4.15.0-39.42 -proposed tracker (LP: #1799411)

  * Linux: insufficient shootdown for paging-structure caches (LP: #1798897)
    - mm: move tlb_table_flush to tlb_flush_mmu_free
    - mm/tlb: Remove tlb_remove_table() non-concurrent condition
    - mm/tlb, x86/mm: Support invalidating TLB caches for RCU_TABLE_FREE
    - [Config] CONFIG_HAVE_RCU_TABLE_INVALIDATE=y

  * Ubuntu18.04: GPU total memory is reduced (LP: #1792102)
    - Revert "powerpc/powernv: Increase memory block size to 1GB on radix"

  * arm64: snapdragon: reduce boot noise (LP: #1797154)
    - [Config] arm64: snapdragon: DRM_MSM=m
    - [Config] arm64: snapdragon: SND*=m
    - [Config] arm64: snapdragon: disable ARM_SDE_INTERFACE
    - [Config] arm64: snapdragon: disable DRM_I2C_ADV7511_CEC
    - [Config] arm64: snapdragon: disable VIDEO_ADV7511, VIDEO_COBALT

  * [Bionic] CPPC bug fixes (LP: #1796949)
    - ACPI / CPPC: Update all pr_(debug/err) messages to log the susbspace id
    - cpufreq: CPPC: Don't set transition_latency
    - ACPI / CPPC: Fix invalid PCC channel status errors

  * regression in 'ip --family bridge neigh' since linux v4.12 (LP: #1796748)
    - rtnetlink: fix rtnl_fdb_dump() for ndmsg header

  * screen displays abnormally on the lenovo M715 with the AMD GPU (Radeon Vega
    8 Mobile, rev ca, 1002:15dd) (LP: #1796786)
    - drm/amd/display: Fix takover from VGA mode
    - drm/amd/display: early return if not in vga mode in disable_vga
    - drm/amd/display: Refine disable VGA

  * arm64: snapdragon: WARNING: CPU: 0 PID: 1 arch/arm64/kernel/setup.c:271
    reserve_memblock_reserved_regions (LP: #1797139)
    - SAUCE: arm64: Fix /proc/iomem for reserved but not memory regions

  * The front MIC can't work on the Lenovo M715 (LP: #1797292)
    - ALSA: hda/realtek - Fix the problem of the front MIC on the Lenovo M715

  * Keyboard backlight sysfs sometimes is missing on Dell laptops (LP: #1797304)
    - platform/x86: dell-smbios: Correct some style warnings
    - platform/x86: dell-smbios: Rename dell-smbios source to dell-smbios-base
    - platform/x86: dell-smbios: Link all dell-smbios-* modules together
    - [Config] CONFIG_DELL_SMBIOS_SMM=y, CONFIG_DELL_SMBIOS_WMI=y

  * rpi3b+: ethernet not working (LP: #1797406)
    - lan78xx: Don't reset the interface on open

  * 87cdf3148b11 was never backported to 4.15 (LP: #1795653)
    - xfrm: Verify MAC header exists before overwriting eth_hdr(skb)->h_proto

  * [Ubuntu18.04][Power9][DD2.2]package installation segfaults inside debian
    chroot env in P9 KVM guest with HTM enabled (kvm) (LP: #1792501)
    - KVM: PPC: Book3S HV: Fix guest r11 corruption with POWER9 TM workarounds

  * Provide mode where all vCPUs on a core must be the same VM (LP: #1792957)
    - KVM: PPC: Book3S HV: Provide mode where all vCPUs on a core must be the same
      VM

  * fscache: bad refcounting in fscache_op_complete leads to OOPS (LP: #1797314)
    - SAUCE: fscache: Fix race in decrementing refcount of op->npages

  * CVE-2018-9363
    - Bluetooth: hidp: buffer overflow in hidp_process_report

  * CVE-20...

Read more...

Changed in linux (Ubuntu Bionic):
status: Fix Committed → Fix Released
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux - 4.18.0-11.12

---------------
linux (4.18.0-11.12) cosmic; urgency=medium

  * linux: 4.18.0-11.12 -proposed tracker (LP: #1799445)

  * arm64: snapdragon: WARNING: CPU: 0 PID: 1 arch/arm64/kernel/setup.c:271
    reserve_memblock_reserved_regions (LP: #1797139)
    - SAUCE: arm64: Fix /proc/iomem for reserved but not memory regions

  * arm64: snapdragon: WARNING: CPU: 0 PID: 1 at drivers/irqchip/irq-gic.c:1016
    gic_irq_domain_translate (LP: #1797143)
    - SAUCE: arm64: dts: msm8916: camms: fix gic_irq_domain_translate warnings

  * The front MIC can't work on the Lenovo M715 (LP: #1797292)
    - ALSA: hda/realtek - Fix the problem of the front MIC on the Lenovo M715

  * Provide mode where all vCPUs on a core must be the same VM (LP: #1792957)
    - KVM: PPC: Book3S HV: Provide mode where all vCPUs on a core must be the same
      VM

  * fscache: bad refcounting in fscache_op_complete leads to OOPS (LP: #1797314)
    - SAUCE: fscache: Fix race in decrementing refcount of op->npages

  * hns3: autoneg settings get lost on down/up (LP: #1797654)
    - net: hns3: Fix for information of phydev lost problem when down/up

  * not able to unwind the stack from within __kernel_clock_gettime in the Linux
    vDSO (LP: #1797963)
    - powerpc/vdso: Correct call frame information

  * Signal 7 error when running GPFS tracing in cluster (LP: #1792195)
    - powerpc/mm/books3s: Add new pte bit to mark pte temporarily invalid.
    - powerpc/mm/radix: Only need the Nest MMU workaround for R -> RW transition

  * Support Edge Gateway's WIFI LED (LP: #1798330)
    - SAUCE: mwifiex: Switch WiFi LED state according to the device status

  * Support Edge Gateway's Bluetooth LED (LP: #1798332)
    - SAUCE: Bluetooth: Support for LED on Edge Gateways

  * kvm doesn't work on 36 physical bits systems (LP: #1798427)
    - KVM: x86: fix L1TF's MMIO GFN calculation

  * CVE-2018-15471
    - xen-netback: fix input validation in xenvif_set_hash_mapping()

  * regression in 'ip --family bridge neigh' since linux v4.12 (LP: #1796748)
    - rtnetlink: fix rtnl_fdb_dump() for ndmsg header

 -- Stefan Bader <email address hidden> Tue, 23 Oct 2018 18:59:15 +0200

Changed in linux (Ubuntu Cosmic):
status: Invalid → Fix Released
Changed in linux (Ubuntu):
status: Invalid → Fix Released
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