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Bug#1093953: linux-image-6.12.9+bpo-amd64: Kernel 6.12.9, random freezes on Thinkpad T520

From Morten Kjeldgaard <mortenkjeldgaard@gmail.com>
Newsgroups linux.debian.bugs.dist, linux.debian.kernel
Subject Bug#1093953: linux-image-6.12.9+bpo-amd64: Kernel 6.12.9, random freezes on Thinkpad T520
Date 2025-01-25 15:10 +0100
Message-ID <K8P1f-bL7i-3@gated-at.bofh.it> (permalink)
References <K8ny1-bseS-11@gated-at.bofh.it>
Organization linux.* mail to news gateway

Cross-posted to 2 groups.

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Package: src:linux
Version: 6.12.9-1~bpo12+1
Followup-For: Bug #1093953
X-Debbugs-Cc: mortenkjeldgaard@gmail.com

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***


I upgraded to kernel 6.12.9 from on 2025-01-23 when it became available in backport, and rebooted some hours later. After rebooting and running this kernel, my machine became unstable, and I experienced multiple freezes.

My machine has been rock stable for months running 6.11.* or most recent backported kernel or earlier kernels, and I've not booted it for weeks, just closed the lid.

A few hours after I upgraded to 6.12.9 it started freezing. I could force a reboot, and it would again freeze after 5-10-30 minutes.

Now i am back on 6.11 and it's stable again. I did browse the journal for clues, couldn't find any clues.

*** End of the template - remove these template lines ***


-- Package-specific info:
** Kernel log: boot messages should be attached

** Model information
sys_vendor: LENOVO
product_name: 4246A58
product_version: ThinkPad T520
chassis_vendor: LENOVO
chassis_version: Not Available
bios_vendor: LENOVO
bios_version: 8AET54WW (1.34 )
board_vendor: LENOVO
board_name: 4246A58
board_version: Not Available

** Network interface configuration:
*** /etc/network/interfaces:
source /etc/network/interfaces.d/*

** PCI devices:
00:00.0 Host bridge [0600]: Intel Corporation 2nd Generation Core Processor Family DRAM Controller [8086:0104] (rev 09)
	Subsystem: Lenovo ThinkPad T520 [17aa:21cf]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
	Latency: 0
	IOMMU group: 1
	Capabilities: <access denied>

00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
	Subsystem: Lenovo ThinkPad T520 [17aa:21cf]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 28
	IOMMU group: 0
	Region 0: Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
	Region 2: Memory at e0000000 (64-bit, prefetchable) [size=256M]
	Region 4: I/O ports at 4000 [size=64]
	Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
	Capabilities: <access denied>
	Kernel driver in use: i915
	Kernel modules: i915

00:16.0 Communication controller [0780]: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 [8086:1c3a] (rev 04)
	Subsystem: Lenovo ThinkPad T520 [17aa:21cf]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 29
	IOMMU group: 2
	Region 0: Memory at f1525000 (64-bit, non-prefetchable) [size=16]
	Capabilities: <access denied>
	Kernel driver in use: mei_me
	Kernel modules: mei_me

00:16.3 Serial controller [0700]: Intel Corporation 6 Series/C200 Series Chipset Family KT Controller [8086:1c3d] (rev 04) (prog-if 02 [16550])
	Subsystem: Lenovo 6 Series/C200 Series Chipset Family KT Controller [17aa:21cf]
	Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin B routed to IRQ 19
	IOMMU group: 2
	Region 0: I/O ports at 40b0 [size=8]
	Region 1: Memory at f152c000 (32-bit, non-prefetchable) [size=4K]
	Capabilities: <access denied>
	Kernel driver in use: serial

00:19.0 Ethernet controller [0200]: Intel Corporation 82579LM Gigabit Network Connection (Lewisville) [8086:1502] (rev 04)
	Subsystem: Lenovo ThinkPad T520 [17aa:21ce]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 26
	IOMMU group: 3
	Region 0: Memory at f1500000 (32-bit, non-prefetchable) [size=128K]
	Region 1: Memory at f152b000 (32-bit, non-prefetchable) [size=4K]
	Region 2: I/O ports at 4080 [size=32]
	Capabilities: <access denied>
	Kernel driver in use: e1000e
	Kernel modules: e1000e

00:1a.0 USB controller [0c03]: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 [8086:1c2d] (rev 04) (prog-if 20 [EHCI])
	Subsystem: Lenovo ThinkPad T520 [17aa:21cf]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 16
	IOMMU group: 4
	Region 0: Memory at f152a000 (32-bit, non-prefetchable) [size=1K]
	Capabilities: <access denied>
	Kernel driver in use: ehci-pci
	Kernel modules: ehci_pci

00:1b.0 Audio device [0403]: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller [8086:1c20] (rev 04)
	Subsystem: Lenovo ThinkPad T520 [17aa:21cf]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 31
	IOMMU group: 5
	Region 0: Memory at f1520000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel

00:1c.0 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 [8086:1c10] (rev b4) (prog-if 00 [Normal decode])
	Subsystem: Lenovo ThinkPad T520 [17aa:21cf]
	Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin A routed to IRQ 16
	IOMMU group: 6
	Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
	I/O behind bridge: [disabled] [16-bit]
	Memory behind bridge: [disabled] [32-bit]
	Prefetchable memory behind bridge: [disabled] [64-bit]
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
	BridgeCtl: Parity- SERR+ NoISA- VGA- VGA16- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: <access denied>
	Kernel driver in use: pcieport

00:1c.1 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 [8086:1c12] (rev b4) (prog-if 00 [Normal decode])
	Subsystem: Lenovo ThinkPad T520 [17aa:21cf]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin B routed to IRQ 17
	IOMMU group: 7
	Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
	I/O behind bridge: [disabled] [16-bit]
	Memory behind bridge: f1400000-f14fffff [size=1M] [32-bit]
	Prefetchable memory behind bridge: [disabled] [64-bit]
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
	BridgeCtl: Parity- SERR+ NoISA- VGA- VGA16- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: <access denied>
	Kernel driver in use: pcieport

00:1c.4 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 [8086:1c18] (rev b4) (prog-if 00 [Normal decode])
	Subsystem: Lenovo ThinkPad T520 [17aa:21cf]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 16
	IOMMU group: 8
	Bus: primary=00, secondary=0d, subordinate=0d, sec-latency=0
	I/O behind bridge: 3000-3fff [size=4K] [16-bit]
	Memory behind bridge: f0c00000-f13fffff [size=8M] [32-bit]
	Prefetchable memory behind bridge: f0400000-f0bfffff [size=8M] [32-bit]
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
	BridgeCtl: Parity- SERR+ NoISA- VGA- VGA16- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: <access denied>
	Kernel driver in use: pcieport

00:1d.0 USB controller [0c03]: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 [8086:1c26] (rev 04) (prog-if 20 [EHCI])
	Subsystem: Lenovo ThinkPad T520 [17aa:21cf]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 23
	IOMMU group: 9
	Region 0: Memory at f1529000 (32-bit, non-prefetchable) [size=1K]
	Capabilities: <access denied>
	Kernel driver in use: ehci-pci
	Kernel modules: ehci_pci

00:1f.0 ISA bridge [0601]: Intel Corporation QM67 Express Chipset LPC Controller [8086:1c4f] (rev 04)
	Subsystem: Lenovo ThinkPad T520 [17aa:21cf]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	IOMMU group: 10
	Capabilities: <access denied>
	Kernel driver in use: lpc_ich
	Kernel modules: lpc_ich

00:1f.2 SATA controller [0106]: Intel Corporation 6 Series/C200 Series Chipset Family 6 port Mobile SATA AHCI Controller [8086:1c03] (rev 04) (prog-if 01 [AHCI 1.0])
	Subsystem: Lenovo ThinkPad T520 [17aa:21cf]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin B routed to IRQ 27
	IOMMU group: 10
	Region 0: I/O ports at 40a8 [size=8]
	Region 1: I/O ports at 40bc [size=4]
	Region 2: I/O ports at 40a0 [size=8]
	Region 3: I/O ports at 40b8 [size=4]
	Region 4: I/O ports at 4060 [size=32]
	Region 5: Memory at f1528000 (32-bit, non-prefetchable) [size=2K]
	Capabilities: <access denied>
	Kernel driver in use: ahci
	Kernel modules: ahci

00:1f.3 SMBus [0c05]: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller [8086:1c22] (rev 04)
	Subsystem: Lenovo ThinkPad T520 [17aa:21cf]
	Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin C routed to IRQ 18
	IOMMU group: 10
	Region 0: Memory at f1524000 (64-bit, non-prefetchable) [size=256]
	Region 4: I/O ports at efa0 [size=32]
	Kernel driver in use: i801_smbus
	Kernel modules: i2c_i801

03:00.0 Network controller [0280]: Intel Corporation Centrino Ultimate-N 6300 [8086:4238] (rev 3e)
	Subsystem: Intel Corporation Centrino Ultimate-N 6300 3x3 AGN [8086:1111]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 30
	IOMMU group: 11
	Region 0: Memory at f1400000 (64-bit, non-prefetchable) [size=8K]
	Capabilities: <access denied>
	Kernel driver in use: iwlwifi
	Kernel modules: iwlwifi

0d:00.0 System peripheral [0880]: Ricoh Co Ltd PCIe SDXC/MMC Host Controller [1180:e823] (rev 05) (prog-if 01)
	Subsystem: Lenovo ThinkPad T520 [17aa:21cf]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 16
	IOMMU group: 12
	Region 0: Memory at f0c00000 (32-bit, non-prefetchable) [size=256]
	Capabilities: <access denied>
	Kernel driver in use: sdhci-pci
	Kernel modules: sdhci_pci


** USB devices:
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 005: ID 04f2:b217 Chicony Electronics Co., Ltd Lenovo Integrated Camera (0.3MP)
Bus 001 Device 004: ID 0a5c:217f Broadcom Corp. BCM2045B (BDC-2.1)
Bus 001 Device 003: ID 046d:c53f Logitech, Inc. USB Receiver
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


-- System Information:
Debian Release: 12.1
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.11.10+bpo-amd64 (SMP w/4 CPU threads; PREEMPT)
Kernel taint flags: TAINT_FIRMWARE_WORKAROUND
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_DK.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_US.UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages linux-image-6.12.9+bpo-amd64 depends on:
ii  initramfs-tools [linux-initramfs-tool]  0.142+deb12u1
ii  kmod                                    30+20221128-1
ii  linux-base                              4.9

Versions of packages linux-image-6.12.9+bpo-amd64 recommends:
ii  apparmor  3.0.8-3

Versions of packages linux-image-6.12.9+bpo-amd64 suggests:
pn  debian-kernel-handbook  <none>
ii  firmware-linux-free     20200122-1
ii  grub-efi-amd64          2.12-1~bpo12+1
pn  linux-doc-6.12          <none>

Versions of packages linux-image-6.12.9+bpo-amd64 is related to:
ii  firmware-amd-graphics      20240709-2~bpo12+1
ii  firmware-atheros           20240709-2~bpo12+1
ii  firmware-bnx2              20240709-2~bpo12+1
ii  firmware-bnx2x             20240709-2~bpo12+1
ii  firmware-brcm80211         20240709-2~bpo12+1
pn  firmware-cavium            <none>
pn  firmware-cirrus            <none>
ii  firmware-intel-graphics    20240709-2~bpo12+1
ii  firmware-intel-misc        20240709-2~bpo12+1
pn  firmware-intel-sound       <none>
ii  firmware-ipw2x00           20240709-2~bpo12+1
ii  firmware-ivtv              20240709-2~bpo12+1
ii  firmware-iwlwifi           20240709-2~bpo12+1
ii  firmware-libertas          20240709-2~bpo12+1
ii  firmware-marvell-prestera  20240709-2~bpo12+1
ii  firmware-mediatek          20240709-2~bpo12+1
ii  firmware-misc-nonfree      20240709-2~bpo12+1
pn  firmware-myricom           <none>
pn  firmware-netronome         <none>
pn  firmware-netxen            <none>
ii  firmware-nvidia-graphics   20240709-2~bpo12+1
pn  firmware-qcom-soc          <none>
ii  firmware-qlogic            20240709-2~bpo12+1
ii  firmware-realtek           20240709-2~bpo12+1
pn  firmware-samsung           <none>
pn  firmware-siano             <none>
pn  firmware-ti-connectivity   <none>
pn  xen-hypervisor             <none>

-- no debconf information

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Bug#1093953: linux-image-6.12.9-amd64: i915 causes lockups and kernel panics with crocus on ThinkPad X201 Jackson <wonderland.enterprises@outlook.com> - 2025-01-24 09:50 +0100
  Bug#1093953: linux-image-6.12.9+bpo-amd64: Kernel 6.12.9, random freezes on Thinkpad T520 Morten Kjeldgaard <mortenkjeldgaard@gmail.com> - 2025-01-25 15:10 +0100

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