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Subject4f5368b5541a902f6596558b05f5c21a9770dd32 causes regression
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Date
Hi,

I am seeing a hard lockup during boot with this patch.
I am using only the laptop's internal display.
The last message I see is:

kvm: disabled by BIOS

Regards
Oliver

devices are:

00:00.0 Host bridge [0600]: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers [8086:1910] (rev 07)
Subsystem: Hewlett-Packard Company Device [103c:80d5]
Flags: bus master, fast devsel, latency 0
Capabilities: [e0] Vendor Specific Information: Len=10 <?>
Kernel driver in use: skl_uncore

00:01.0 PCI bridge [0604]: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16) [8086:1901] (rev 07) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 120
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00003000-00003fff [size=4K]
Memory behind bridge: dc000000-dc0fffff [size=1M]
Prefetchable memory behind bridge: 0000000040000000-000000004fffffff [size=256M]
Capabilities: [88] Subsystem: Hewlett-Packard Company Device [103c:80d5]
Capabilities: [80] Power Management version 3
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [a0] Express Root Port (Slot+), MSI 00
Capabilities: [100] Virtual Channel
Capabilities: [140] Root Complex Link
Capabilities: [d94] #19
Kernel driver in use: pcieport

00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 530 [8086:191b] (rev 06) (prog-if 00 [VGA controller])
Subsystem: Hewlett-Packard Company Device [103c:80d5]
Flags: bus master, fast devsel, latency 0, IRQ 130
Memory at db000000 (64-bit, non-prefetchable) [size=16M]
Memory at 50000000 (64-bit, prefetchable) [size=256M]
I/O ports at 6000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: [40] Vendor Specific Information: Len=0c <?>
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [100] Process Address Space ID (PASID)
Capabilities: [200] Address Translation Service (ATS)
Capabilities: [300] Page Request Interface (PRI)
Kernel driver in use: i915
Kernel modules: i915

00:14.0 USB controller [0c03]: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller [8086:a12f] (rev 31) (prog-if 30 [XHCI])
Subsystem: Hewlett-Packard Company Device [103c:80d5]
Flags: bus master, medium devsel, latency 0, IRQ 125
Memory at dc320000 (64-bit, non-prefetchable) [size=64K]
Capabilities: [70] Power Management version 2
Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+
Kernel driver in use: xhci_hcd
Kernel modules: xhci_pci

00:14.2 Signal processing controller [1180]: Intel Corporation Sunrise Point-H Thermal subsystem [8086:a131] (rev 31)
Subsystem: Hewlett-Packard Company Device [103c:80d5]
Flags: fast devsel, IRQ 18
Memory at dc34a000 (64-bit, non-prefetchable) [size=4K]
Capabilities: [50] Power Management version 3
Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
Kernel driver in use: intel_pch_thermal
Kernel modules: intel_pch_thermal

00:16.0 Communication controller [0780]: Intel Corporation Sunrise Point-H CSME HECI #1 [8086:a13a] (rev 31)
Subsystem: Hewlett-Packard Company Device [103c:80d5]
Flags: bus master, fast devsel, latency 0, IRQ 126
Memory at dc34b000 (64-bit, non-prefetchable) [size=4K]
Capabilities: [50] Power Management version 3
Capabilities: [8c] MSI: Enable+ Count=1/1 Maskable- 64bit+
Kernel driver in use: mei_me
Kernel modules: mei_me

00:17.0 SATA controller [0106]: Intel Corporation Sunrise Point-H SATA controller [AHCI mode] [8086:a102] (rev 31) (prog-if 01 [AHCI 1.0])
Subsystem: Hewlett-Packard Company Device [103c:80d5]
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 124
Memory at dc348000 (32-bit, non-prefetchable) [size=8K]
Memory at dc34e000 (32-bit, non-prefetchable) [size=256]
I/O ports at 6080 [size=8]
I/O ports at 6088 [size=4]
I/O ports at 6040 [size=32]
Memory at dc34c000 (32-bit, non-prefetchable) [size=2K]
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [70] Power Management version 3
Capabilities: [a8] SATA HBA v1.0
Kernel driver in use: ahci
Kernel modules: ahci

00:1c.0 PCI bridge [0604]: Intel Corporation Sunrise Point-H PCI Express Root Port #1 [8086:a110] (rev f1) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 121
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: None
Memory behind bridge: dc100000-dc1fffff [size=1M]
Prefetchable memory behind bridge: None
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Hewlett-Packard Company Device [103c:80d5]
Capabilities: [a0] Power Management version 3
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Access Control Services
Capabilities: [200] L1 PM Substates
Kernel driver in use: pcieport

00:1c.1 PCI bridge [0604]: Intel Corporation Sunrise Point-H PCI Express Root Port #2 [8086:a111] (rev f1) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 122
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: 00004000-00005fff [size=8K]
Memory behind bridge: dc200000-dc2fffff [size=1M]
Prefetchable memory behind bridge: 000000003e900000-000000003eafffff [size=2M]
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Hewlett-Packard Company Device [103c:80d5]
Capabilities: [a0] Power Management version 3
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Access Control Services
Capabilities: [200] L1 PM Substates
Capabilities: [220] #19
Kernel driver in use: pcieport

00:1c.4 PCI bridge [0604]: Intel Corporation Sunrise Point-H PCI Express Root Port #5 [8086:a114] (rev f1) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 123
Bus: primary=00, secondary=04, subordinate=6e, sec-latency=0
I/O behind bridge: 00007000-00007fff [size=4K]
Memory behind bridge: ac000000-da0fffff [size=737M]
Prefetchable memory behind bridge: 0000000060000000-00000000a9ffffff [size=1184M]
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Hewlett-Packard Company Device [103c:80d5]
Capabilities: [a0] Power Management version 3
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Access Control Services
Capabilities: [220] #19
Kernel driver in use: pcieport

00:1f.0 ISA bridge [0601]: Intel Corporation Sunrise Point-H LPC Controller [8086:a150] (rev 31)
Subsystem: Hewlett-Packard Company Device [103c:80d5]
Flags: bus master, fast devsel, latency 0

00:1f.2 Memory controller [0580]: Intel Corporation Sunrise Point-H PMC [8086:a121] (rev 31)
Subsystem: Hewlett-Packard Company Device [103c:80d5]
Flags: fast devsel
Memory at dc340000 (32-bit, non-prefetchable) [disabled] [size=16K]

00:1f.3 Audio device [0403]: Intel Corporation Sunrise Point-H HD Audio [8086:a170] (rev 31) (prog-if 80)
Subsystem: Hewlett-Packard Company Device [103c:80d5]
Flags: bus master, fast devsel, latency 64, IRQ 132
Memory at dc344000 (64-bit, non-prefetchable) [size=16K]
Memory at dc330000 (64-bit, non-prefetchable) [size=64K]
Capabilities: [50] Power Management version 3
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel

00:1f.4 SMBus [0c05]: Intel Corporation Sunrise Point-H SMBus [8086:a123] (rev 31)
Subsystem: Hewlett-Packard Company Device [103c:80d5]
Flags: medium devsel, IRQ 16
Memory at dc34d000 (64-bit, non-prefetchable) [size=256]
I/O ports at efa0 [size=32]
Kernel driver in use: i801_smbus
Kernel modules: i2c_i801

00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet Connection (2) I219-LM [8086:15b7] (rev 31)
Subsystem: Hewlett-Packard Company Device [103c:80d5]
Flags: bus master, fast devsel, latency 0, IRQ 127
Memory at dc300000 (32-bit, non-prefetchable) [size=128K]
Capabilities: [c8] Power Management version 3
Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [e0] PCI Advanced Features
Kernel driver in use: e1000e
Kernel modules: e1000e

01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Venus XTX [Radeon HD 8890M / R9 M275X/M375X] [1002:6820] (rev 83) (prog-if 00 [VGA controller])
Subsystem: Hewlett-Packard Company Device [103c:80d5]
Flags: bus master, fast devsel, latency 0, IRQ 131
Memory at 40000000 (64-bit, prefetchable) [size=256M]
Memory at dc000000 (64-bit, non-prefetchable) [size=256K]
I/O ports at 3000 [size=256]
Expansion ROM at dc060000 [disabled] [size=128K]
Capabilities: [48] Vendor Specific Information: Len=08 <?>
Capabilities: [50] Power Management version 3
Capabilities: [58] Express Legacy Endpoint, MSI 00
Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
Capabilities: [150] Advanced Error Reporting
Capabilities: [270] #19
Kernel driver in use: radeon
Kernel modules: radeon, amdgpu

01:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 Series] [1002:aab0]
Subsystem: Hewlett-Packard Company Device [103c:80d5]
Flags: bus master, fast devsel, latency 0, IRQ 129
Memory at dc040000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [48] Vendor Specific Information: Len=08 <?>
Capabilities: [50] Power Management version 3
Capabilities: [58] Express Legacy Endpoint, MSI 00
Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
Capabilities: [150] Advanced Error Reporting
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel

02:00.0 Network controller [0280]: Intel Corporation Wireless 8260 [8086:24f3] (rev 2a)
Subsystem: Intel Corporation Dual Band Wireless-AC 8260 [8086:0010]
Flags: bus master, fast devsel, latency 0, IRQ 128
Memory at dc100000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [c8] Power Management version 3
Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [40] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number 34-13-e8-ff-ff-36-80-58
Capabilities: [14c] Latency Tolerance Reporting
Capabilities: [154] L1 PM Substates
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi

03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader [10ec:525a] (rev 01)
Subsystem: Hewlett-Packard Company Device [103c:80d5]
Flags: fast devsel, IRQ 255
Memory at dc200000 (32-bit, non-prefetchable) [disabled] [size=4K]
Capabilities: [80] Power Management version 3
Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [b0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [148] Device Serial Number 00-00-00-01-00-4c-e0-00
Capabilities: [158] Latency Tolerance Reporting
Capabilities: [160] L1 PM Substatesgit bisect start
# bad: [9eede207dd59fc8a676db5e69f677283126d7333] Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
git bisect bad 9eede207dd59fc8a676db5e69f677283126d7333
# good: [a55aa89aab90fae7c815b0551b07be37db359d76] Linux 5.3-rc6
git bisect good a55aa89aab90fae7c815b0551b07be37db359d76
# good: [8b53c76533aa4356602aea98f98a2f3b4051464c] Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
git bisect good 8b53c76533aa4356602aea98f98a2f3b4051464c
# good: [8b53c76533aa4356602aea98f98a2f3b4051464c] Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
git bisect good 8b53c76533aa4356602aea98f98a2f3b4051464c
# good: [3c2edc36a77420d8be05d656019dbc8c31535992] Merge tag 'pinctrl-v5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
git bisect good 3c2edc36a77420d8be05d656019dbc8c31535992
# bad: [574cc4539762561d96b456dbc0544d8898bd4c6e] Merge tag 'drm-next-2019-09-18' of git://anongit.freedesktop.org/drm/drm
git bisect bad 574cc4539762561d96b456dbc0544d8898bd4c6e
# bad: [574cc4539762561d96b456dbc0544d8898bd4c6e] Merge tag 'drm-next-2019-09-18' of git://anongit.freedesktop.org/drm/drm
git bisect bad 574cc4539762561d96b456dbc0544d8898bd4c6e
# bad: [e7f7287bf5f746d29f3607178851246a005dd398] Merge tag 'drm-next-5.4-2019-08-09' of git://people.freedesktop.org/~agd5f/linux into drm-next
git bisect bad e7f7287bf5f746d29f3607178851246a005dd398
# bad: [b0383c0653c4bd2d2732c5767ec8fa223b3d6efd] Merge tag 'drm-misc-next-2019-08-08' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
git bisect bad b0383c0653c4bd2d2732c5767ec8fa223b3d6efd
# bad: [54fc01b775fe35fa0889cb3344ed98c72a52d2c1] Revert "drm/vgem: drop DRM_AUTH usage from the driver"
git bisect bad 54fc01b775fe35fa0889cb3344ed98c72a52d2c1
# bad: [91328ebe4f6f12eaa7754b4ac01b308cf68538d0] drm/tve200: drop use of drmP.h
git bisect bad 91328ebe4f6f12eaa7754b4ac01b308cf68538d0
# good: [88209d2c5035737f96bcfc2fd73c0fd8d80e9bf1] drm/msm: drop DRM_AUTH usage from the driver
git bisect good 88209d2c5035737f96bcfc2fd73c0fd8d80e9bf1
# good: [fdbdcc83ffd7d00265a531e71f1d166566c09d66] drm/bridge: dw-hdmi: Use automatic CTS generation mode when using non-AHB audio
git bisect good fdbdcc83ffd7d00265a531e71f1d166566c09d66
# good: [b4eefa69b63564f2c6c764fedf8c904f2af801da] dt-bindings: display: Convert innolux,ee101ia-01 panel to DT schema
git bisect good b4eefa69b63564f2c6c764fedf8c904f2af801da
# good: [d006a9b63d4bbb3eb1e2e616712d45acfcda7042] drm/client: remove the exporting of drm_client_close
git bisect good d006a9b63d4bbb3eb1e2e616712d45acfcda7042
# bad: [374bf825e7a07b6ae61a8a839c0ea184a7665267] drm/panel: simple: Use display_timing for AUO b101ean01
git bisect bad 374bf825e7a07b6ae61a8a839c0ea184a7665267
# bad: [a4e7e98e90ebd9a801d6a383e1edd10b09d155ba] drm/vkms: Rename vkms_crc.c into vkms_composer.c
git bisect bad a4e7e98e90ebd9a801d6a383e1edd10b09d155ba
# bad: [e9d85f731de06a35d2ae6cdcf7d0e037c98ef41a] drm/vkms: Avoid assigning 0 for possible_crtc
git bisect bad e9d85f731de06a35d2ae6cdcf7d0e037c98ef41a
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