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Message-ID: <Z2B3-_bVk8RPb00l@gallifrey>
Date: Mon, 16 Dec 2024 18:56:59 +0000
From: "Dr. David Alan Gilbert" <linux@...blig.org>
To: Thomas Zimmermann <tzimmermann@...e.de>
Cc: kraxel@...hat.com, virtualization@...ts.linux.dev,
linux-kernel@...r.kernel.org,
dri-devel <dri-devel@...ts.freedesktop.org>
Subject: Re: a bochs-drm (?) oops on head
* Dr. David Alan Gilbert (linux@...blig.org) wrote:
> * Thomas Zimmermann (tzimmermann@...e.de) wrote:
> > Hi
> >
> >
> > Am 16.12.24 um 14:46 schrieb Dr. David Alan Gilbert:
> > [...]
> > >
> > > > The attached patch fixes the problem for me. Could you please test and
> > > > report back the results.
> > > That gets me a different oops; this was run with:
> > > qemu-system-x86_64 -M pc -cpu host --enable-kvm -smp 4 -m 2G -kernel /discs/fast/kernel/arch/x86/boot/bzImage -append "console=tty0 console=ttyS0 root=/dev/vdb1 single" -drive if=virtio,file=/discs/more/images/debian12-64scan.qcow2
> > >
> > > It looks to me if it made the mistake of trying to print something in the middle of being removed:
> >
> > From the stack trace below, I'd say it is the one at [1]. But I fail to
> > reproduce the problem.
> >
> > Could you please send me the complete output of dmesg after the system
> > finished booting?
>
> Sure; this is as far as it gets until it hits the vga oops that stops it:
>
OK, this one is older; I can reproduce it on 6.12; I'll chase it further.
Dave
> [ 0.000000][ T0] Linux version 6.13.0-rc2+ (dg@...ek) (gcc (GCC) 14.2.1 20240912 (Red Hat 14.2.1-3), GNU ld version 2.43.1-4.fc41) #373 SMP PREEMPT_DYNAMIC Mon Dec 16 13:25:32 GMT 2024
> [ 0.000000][ T0] Command line: console=tty0 console=ttyS0 root=/dev/vdb1 single
> [ 0.000000][ T0] KERNEL supported cpus:
> [ 0.000000][ T0] Intel GenuineIntel
> [ 0.000000][ T0] AMD AuthenticAMD
> [ 0.000000][ T0] Hygon HygonGenuine
> [ 0.000000][ T0] Centaur CentaurHauls
> [ 0.000000][ T0] zhaoxin Shanghai
> [ 0.000000][ T0] BIOS-provided physical RAM map:
> [ 0.000000][ T0] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
> [ 0.000000][ T0] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
> [ 0.000000][ T0] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
> [ 0.000000][ T0] BIOS-e820: [mem 0x0000000000100000-0x000000007ffdcfff] usable
> [ 0.000000][ T0] BIOS-e820: [mem 0x000000007ffdd000-0x000000007fffffff] reserved
> [ 0.000000][ T0] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved
> [ 0.000000][ T0] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved
> [ 0.000000][ T0] BIOS-e820: [mem 0x000000fd00000000-0x000000ffffffffff] reserved
> [ 0.000000][ T0] NX (Execute Disable) protection: active
> [ 0.000000][ T0] APIC: Static calls initialized
> [ 0.000000][ T0] SMBIOS 2.8 present.
> [ 0.000000][ T0] DMI: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014
> [ 0.000000][ T0] DMI: Memory slots populated: 1/1
> [ 0.000000][ T0] Hypervisor detected: KVM
> [ 0.000000][ T0] kvm-clock: Using msrs 4b564d01 and 4b564d00
> [ 0.000004][ T0] kvm-clock: using sched offset of 2473079990 cycles
> [ 0.000013][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
> [ 0.000041][ T0] tsc: Detected 3493.430 MHz processor
> [ 0.010442][ T0] last_pfn = 0x7ffdd max_arch_pfn = 0x400000000
> [ 0.010480][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs
> [ 0.010495][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
> [ 0.014831][ T0] found SMP MP-table at [mem 0x000f5490-0x000f549f]
> [ 0.045290][ T0] ACPI: Early table checksum verification disabled
> [ 0.045302][ T0] ACPI: RSDP 0x00000000000F52D0 000014 (v00 BOCHS )
> [ 0.045326][ T0] ACPI: RSDT 0x000000007FFE1D5D 000034 (v01 BOCHS BXPC 00000001 BXPC 00000001)
> [ 0.045358][ T0] ACPI: FACP 0x000000007FFE1BF9 000074 (v01 BOCHS BXPC 00000001 BXPC 00000001)
> [ 0.045393][ T0] ACPI: DSDT 0x000000007FFE0040 001BB9 (v01 BOCHS BXPC 00000001 BXPC 00000001)
> [ 0.045422][ T0] ACPI: FACS 0x000000007FFE0000 000040
> [ 0.045444][ T0] ACPI: APIC 0x000000007FFE1C6D 000090 (v03 BOCHS BXPC 00000001 BXPC 00000001)
> [ 0.045474][ T0] ACPI: HPET 0x000000007FFE1CFD 000038 (v01 BOCHS BXPC 00000001 BXPC 00000001)
> [ 0.045503][ T0] ACPI: WAET 0x000000007FFE1D35 000028 (v01 BOCHS BXPC 00000001 BXPC 00000001)
> [ 0.045529][ T0] ACPI: Reserving FACP table memory at [mem 0x7ffe1bf9-0x7ffe1c6c]
> [ 0.045540][ T0] ACPI: Reserving DSDT table memory at [mem 0x7ffe0040-0x7ffe1bf8]
> [ 0.045550][ T0] ACPI: Reserving FACS table memory at [mem 0x7ffe0000-0x7ffe003f]
> [ 0.045560][ T0] ACPI: Reserving APIC table memory at [mem 0x7ffe1c6d-0x7ffe1cfc]
> [ 0.045570][ T0] ACPI: Reserving HPET table memory at [mem 0x7ffe1cfd-0x7ffe1d34]
> [ 0.045580][ T0] ACPI: Reserving WAET table memory at [mem 0x7ffe1d35-0x7ffe1d5c]
> [ 0.046825][ T0] No NUMA configuration found
> [ 0.046833][ T0] Faking a node at [mem 0x0000000000000000-0x000000007ffdcfff]
> [ 0.046981][ T0] NODE_DATA(0) allocated [mem 0x7ff997c0-0x7ffd87bf]
> [ 0.052667][ T0] Zone ranges:
> [ 0.052676][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff]
> [ 0.052692][ T0] DMA32 [mem 0x0000000001000000-0x000000007ffdcfff]
> [ 0.052705][ T0] Normal empty
> [ 0.052714][ T0] Device empty
> [ 0.052722][ T0] Movable zone start for each node
> [ 0.052762][ T0] Early memory node ranges
> [ 0.052767][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff]
> [ 0.052777][ T0] node 0: [mem 0x0000000000100000-0x000000007ffdcfff]
> [ 0.052791][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x000000007ffdcfff]
> [ 0.052859][ T0] On node 0, zone DMA: 1 pages in unavailable ranges
> [ 0.053757][ T0] On node 0, zone DMA: 97 pages in unavailable ranges
> [ 0.069886][ T0] On node 0, zone DMA32: 35 pages in unavailable ranges
> [ 0.070162][ T0] ACPI: PM-Timer IO Port: 0x608
> [ 0.070207][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
> [ 0.070259][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
> [ 0.070278][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
> [ 0.070291][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
> [ 0.070304][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
> [ 0.070316][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
> [ 0.070328][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
> [ 0.070360][ T0] ACPI: Using ACPI (MADT) for SMP configuration information
> [ 0.070367][ T0] ACPI: HPET id: 0x8086a201 base: 0xfed00000
> [ 0.070387][ T0] TSC deadline timer available
> [ 0.070408][ T0] CPU topo: Max. logical packages: 1
> [ 0.070414][ T0] CPU topo: Max. logical dies: 1
> [ 0.070420][ T0] CPU topo: Max. dies per package: 1
> [ 0.070441][ T0] CPU topo: Max. threads per core: 1
> [ 0.070447][ T0] CPU topo: Num. cores per package: 4
> [ 0.070454][ T0] CPU topo: Num. threads per package: 4
> [ 0.070460][ T0] CPU topo: Allowing 4 present CPUs plus 0 hotplug CPUs
> [ 0.070540][ T0] kvm-guest: APIC: eoi() replaced with kvm_guest_apic_eoi_write()
> [ 0.070574][ T0] kvm-guest: KVM setup pv remote TLB flush
> [ 0.070582][ T0] kvm-guest: setup PV sched yield
> [ 0.070667][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
> [ 0.070685][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
> [ 0.070695][ T0] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff]
> [ 0.070704][ T0] PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff]
> [ 0.070719][ T0] [mem 0x80000000-0xfeffbfff] available for PCI devices
> [ 0.070729][ T0] Booting paravirtualized kernel on KVM
> [ 0.070743][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns
> [ 0.154769][ T0] No bootconfig data provided, so skipping bootconfig
> [ 0.154806][ T0] setup_percpu: NR_CPUS:8192 nr_cpumask_bits:4 nr_cpu_ids:4 nr_node_ids:1
> [ 0.157476][ T0] percpu: Embedded 575 pages/cpu s2318336 r8192 d28672 u4194304
> [ 0.157774][ T0] kvm-guest: PV spinlocks enabled
> [ 0.157793][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear)
> [ 0.157812][ T0] Kernel command line: console=tty0 console=ttyS0 root=/dev/vdb1 single
> [ 0.161279][ T0] Unknown kernel command line parameters "single", will be passed to user space.
> [ 0.161326][ T0] random: crng init done
> [ 0.161332][ T0] printk: log buffer data + meta data: 131072 + 458752 = 589824 bytes
> [ 0.161623][ T0] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes, linear)
> [ 0.161722][ T0] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes, linear)
> [ 0.161939][ T0] Fallback order for Node 0: 0
> [ 0.161957][ T0] Built 1 zonelists, mobility grouping on. Total pages: 524155
> [ 0.161966][ T0] Policy zone: DMA32
> [ 0.162301][ T0] mem auto-init: stack:all(pattern), heap alloc:on, heap free:on
> [ 0.162311][ T0] mem auto-init: clearing system memory may take some time...
> [ 0.386143][ T0] SLUB: HWalign=64, Order=0-1, MinObjects=0, CPUs=4, Nodes=1
> [ 0.386180][ T0] kmemleak: Kernel memory leak detector disabled
> [ 0.386258][ T0] ODEBUG: selftest passed
> [ 0.388868][ T0] ftrace: allocating 401982 entries in 1571 pages
> [ 0.394854][ T0] ftrace section at ffffffffb26a0408 sorted properly
> [ 1.520886][ T0] ftrace: allocated 1571 pages with 5 groups
> [ 1.540405][ T0] Dynamic Preempt: none
> [ 1.540866][ T0] Running RCU self tests
> [ 1.540874][ T0] Running RCU synchronous self tests
> [ 1.540908][ T0] rcu: Preemptible hierarchical RCU implementation.
> [ 1.540914][ T0] rcu: RCU event tracing is enabled.
> [ 1.540918][ T0] rcu: RCU lockdep checking is enabled.
> [ 1.540923][ T0] rcu: RCU restricting CPUs from NR_CPUS=8192 to nr_cpu_ids=4.
> [ 1.540932][ T0] rcu: RCU priority boosting: priority 1 delay 500 ms.
> [ 1.540940][ T0] rcu: RCU callback double-/use-after-free debug is enabled.
> [ 1.540946][ T0] rcu: RCU debug extended QS entry/exit.
> [ 1.540951][ T0] Trampoline variant of Tasks RCU enabled.
> [ 1.540956][ T0] Rude variant of Tasks RCU enabled.
> [ 1.540960][ T0] Tracing variant of Tasks RCU enabled.
> [ 1.540966][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies.
> [ 1.540974][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
> [ 1.541080][ T0] Running RCU synchronous self tests
> [ 1.541095][ T0] RCU Tasks: Setting shift to 2 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=4.
> [ 1.541113][ T0] RCU Tasks Rude: Setting shift to 2 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=4.
> [ 1.541132][ T0] RCU Tasks Trace: Setting shift to 2 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=4.
> [ 1.640708][ T0] NR_IRQS: 524544, nr_irqs: 456, preallocated irqs: 16
> [ 1.641458][ T0] rcu: Offload RCU callbacks from CPUs: 0-3.
> [ 1.641473][ T0] rcu: srcu_init: Setting srcu_struct sizes based on contention.
> [ 1.642201][ T0] workqueue: round-robin CPU selection forced, expect performance impact
> [ 1.642213][ T0] kfence: initialized - using 2097152 bytes for 255 objects at 0x(____ptrval____)-0x(____ptrval____)
> [ 1.646137][ T0] Console: colour VGA+ 80x25
> [ 1.646184][ T0] printk: legacy console [tty0] enabled
> [ 1.693145][ T0] printk: legacy console [ttyS0] enabled
> [ 1.780760][ T0] serial port 0 not yet initialized
> [ 1.781824][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
> [ 1.782994][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8
> [ 1.783695][ T0] ... MAX_LOCK_DEPTH: 48
> [ 1.784388][ T0] ... MAX_LOCKDEP_KEYS: 8192
> [ 1.785108][ T0] ... CLASSHASH_SIZE: 4096
> [ 1.785818][ T0] ... MAX_LOCKDEP_ENTRIES: 32768
> [ 1.786552][ T0] ... MAX_LOCKDEP_CHAINS: 65536
> [ 1.787274][ T0] ... CHAINHASH_SIZE: 32768
> [ 1.787988][ T0] memory used by lock dependency info: 6941 kB
> [ 1.788816][ T0] memory used for stack traces: 4224 kB
> [ 1.789586][ T0] per task-struct memory footprint: 2688 bytes
> [ 1.790514][ T0] ACPI: Core revision 20240827
> [ 1.791630][ T0] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns
> [ 1.793222][ T0] APIC: Switch to symmetric I/O mode setup
> [ 1.794188][ T0] x2apic enabled
> [ 1.795561][ T0] APIC: Switched APIC routing to: physical x2apic
> [ 1.796435][ T0] kvm-guest: APIC: send_IPI_mask() replaced with kvm_send_ipi_mask()
> [ 1.797658][ T0] kvm-guest: APIC: send_IPI_mask_allbutself() replaced with kvm_send_ipi_mask_allbutself()
> [ 1.799561][ T0] kvm-guest: setup PV IPIs
> [ 1.801532][ T0] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
> [ 1.802507][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x325b12d0341, max_idle_ns: 440795304325 ns
> [ 1.804104][ T0] Calibrating delay loop (skipped) preset value.. 6986.86 BogoMIPS (lpj=13973720)
> [ 1.808177][ T0] x86/cpu: User Mode Instruction Prevention (UMIP) activated
> [ 1.809403][ T0] Last level iTLB entries: 4KB 512, 2MB 255, 4MB 127
> [ 1.810335][ T0] Last level dTLB entries: 4KB 512, 2MB 255, 4MB 127, 1GB 0
> [ 1.811356][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
> [ 1.812716][ T0] Spectre V2 : Mitigation: Retpolines
> [ 1.813492][ T0] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch
> [ 1.814792][ T0] Spectre V2 : Spectre v2 / SpectreRSB : Filling RSB on VMEXIT
> [ 1.816455][ T0] Spectre V2 : Enabling Speculation Barrier for firmware calls
> [ 1.817549][ T0] RETBleed: Mitigation: untrained return thunk
> [ 1.818961][ T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier
> [ 1.820100][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl
> [ 1.821413][ T0] Speculative Return Stack Overflow: IBPB-extending microcode not applied!
> [ 1.822645][ T0] Speculative Return Stack Overflow: WARNING: See https://kernel.org/doc/html/latest/admin-guide/hw-vuln/srso.html for mitigation options.
> [ 1.822659][ T0] Speculative Return Stack Overflow: Vulnerable: Safe RET, no microcode
> [ 1.825811][ T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
> [ 1.827019][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
> [ 1.828096][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
> [ 1.829203][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
> [ 1.830183][ T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'compacted' format.
> [ 3.987368][ T0] debug: unmapping init [mem 0xffffffffb6ed1000-0xffffffffb6f03fff]
> [ 3.989072][ T0] pid_max: default: 4096 minimum: 301
> [ 3.990221][ T0] LSM: initializing lsm=lockdown,capability,apparmor,landlock,yama,loadpin,safesetid,tomoyo,bpf,ima,evm
> [ 3.994852][ T0] AppArmor: AppArmor initialized
> [ 3.996743][ T0] landlock: Up and running.
> [ 3.997498][ T0] Yama: becoming mindful.
> [ 3.998324][ T0] LoadPin: ready to pin (currently not enforcing)
> [ 4.000063][ T0] TOMOYO Linux initialized
> [ 4.006069][ T0] LSM support for eBPF active
> [ 4.007901][ T0] stackdepot: allocating hash table of 16384 entries via kvcalloc
> [ 4.009454][ T0] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes, linear)
> [ 4.010813][ T0] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes, linear)
> [ 4.019136][ T0] kcsan: strict mode configured
> [ 4.019938][ T0] Running RCU synchronous self tests
> [ 4.020413][ T0] Running RCU synchronous self tests
> [ 4.022824][ T1] smpboot: CPU0: AMD Ryzen 9 3950X 16-Core Processor (family: 0x17, model: 0x71, stepping: 0x0)
> [ 4.027546][ T1] Running RCU Tasks wait API self tests
> [ 4.132934][ T1] Running RCU Tasks Rude wait API self tests
> [ 4.135233][ T1] Running RCU Tasks Trace wait API self tests
> [ 4.137060][ T1] Performance Events: Fam17h+ core perfctr, AMD PMU driver.
> [ 4.138990][ T1] ... version: 0
> [ 4.140125][ T1] ... bit width: 48
> [ 4.141413][ T1] ... generic registers: 6
> [ 4.142672][ T1] ... value mask: 0000ffffffffffff
> [ 4.144125][ T1] ... max period: 00007fffffffffff
> [ 4.145652][ T1] ... fixed-purpose events: 0
> [ 4.147502][ T1] ... event mask: 000000000000003f
> [ 4.151367][ T1] signal: max sigframe size: 1776
> [ 4.153794][ T1] rcu: Hierarchical SRCU implementation.
> [ 4.155197][ T1] rcu: Max phase no-delay instances is 1000.
> [ 4.158935][ T1] Timer migration: 1 hierarchy levels; 8 children per group; 1 crossnode level
> [ 4.380342][ T15] Callback from call_rcu_tasks_trace() invoked.
> [ 4.428824][ T1] smp: Bringing up secondary CPUs ...
> [ 4.434652][ T1] smpboot: x86: Booting SMP configuration:
> [ 4.435728][ T1] .... node #0, CPUs: #1 #2 #3
> [ 4.453399][ T1] smp: Brought up 1 node, 4 CPUs
> [ 4.453627][ T1] ----------------
> [ 4.454335][ T1] | NMI testsuite:
> [ 4.456138][ T1] --------------------
> [ 4.457261][ T1] remote IPI: ok |
> [ 4.458782][ T1] local IPI: ok |
> [ 4.459690][ T1] --------------------
> [ 4.460406][ T1] Good, all 2 testcases passed! |
> [ 4.461263][ T1] ---------------------------------
> [ 4.462119][ T1] smpboot: Total of 4 processors activated (27947.44 BogoMIPS)
> [ 4.492085][ T13] Callback from call_rcu_tasks() invoked.
> [ 5.115784][ T49] node 0 deferred pages initialised in 652ms
> [ 5.120092][ T49] pgdatinit0 (49) used greatest stack depth: 13864 bytes left
> [ 5.120680][ T1] Memory: 1359644K/2096620K available (315392K kernel code, 44584K rwdata, 139208K rodata, 85484K init, 25580K bss, 724252K reserved, 0K cma-reserved)
> [ 5.128422][ T1] allocated 4194304 bytes of page_ext
> [ 5.139065][ T1] devtmpfs: initialized
> [ 5.144116][ T1] x86/mm: Memory block size: 128MB
> [ 5.176122][ T1] version magic: 0x42343220
> [ 5.196169][ T1] Running RCU synchronous self tests
> [ 5.197052][ T1] Running RCU synchronous self tests
> [ 5.239377][ T1] DMA-API: preallocated 65536 debug entries
> [ 5.240110][ T1] DMA-API: debugging enabled by kernel config
> [ 5.241029][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
> [ 5.242597][ T1] futex hash table entries: 16 (order: -1, 2048 bytes, linear)
> [ 5.265899][ T1] prandom: seed boundary self test passed
> [ 5.279418][ T1] prandom: 100 self tests passed
> [ 5.280395][ T1] pinctrl core: initialized pinctrl subsystem
> [ 5.309948][ T1]
> [ 5.310403][ T1] *************************************************************
> [ 5.310424][ T1] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
> [ 5.310444][ T1] ** **
> [ 5.310464][ T1] ** IOMMU DebugFS SUPPORT HAS BEEN ENABLED IN THIS KERNEL **
> [ 5.312821][ T1] ** **
> [ 5.312842][ T1] ** This means that this kernel is built to expose internal **
> [ 5.315591][ T1] ** IOMMU data structures, which may compromise security on **
> [ 5.315612][ T1] ** your system. **
> [ 5.315631][ T1] ** **
> [ 5.316867][ T1] ** If you see this message and you are not debugging the **
> [ 5.316888][ T1] ** kernel, report this immediately to your vendor! **
> [ 5.318831][ T1] ** **
> [ 5.318852][ T1] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
> [ 5.318872][ T1] *************************************************************
> [ 5.321027][ T1] PM: RTC time: 17:30:28, date: 2024-12-16
> [ 5.353605][ T1] NET: Registered PF_NETLINK/PF_ROUTE protocol family
> [ 5.369950][ T1] DMA: preallocated 256 KiB GFP_KERNEL pool for atomic allocations
> [ 5.371445][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations
> [ 5.372805][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations
> [ 5.374563][ T1] audit: initializing netlink subsys (disabled)
> [ 5.377078][ T54] audit: type=2000 audit(1734370228.953:1): state=initialized audit_enabled=0 res=1
> [ 5.390662][ T1] kcsan: selftest: 3/3 tests passed
> [ 5.420535][ T1] thermal_sys: Registered thermal governor 'fair_share'
> [ 5.420570][ T1] thermal_sys: Registered thermal governor 'bang_bang'
> [ 5.421658][ T1] thermal_sys: Registered thermal governor 'step_wise'
> [ 5.422669][ T1] thermal_sys: Registered thermal governor 'user_space'
> [ 5.423689][ T1] thermal_sys: Registered thermal governor 'power_allocator'
> [ 5.426639][ T1] EISA bus registered
> [ 5.428587][ T1] cpuidle: using governor ladder
> [ 5.429257][ T1] cpuidle: using governor menu
> [ 5.435595][ T1] NET: Registered PF_QIPCRTR protocol family
> [ 5.499562][ T1] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
> [ 5.514557][ T1] dca service started, version 1.12.1
> [ 5.517775][ T1] PCI: Using configuration type 1 for base access
> [ 5.518794][ T1] PCI: Using configuration type 1 for extended access
> [ 5.529845][ T1] kprobes: kprobe jump-optimization is enabled. All kprobes are optimized if possible.
> [ 5.537147][ T1] HugeTLB: registered 1.00 GiB page size, pre-allocated 0 pages
> [ 5.540174][ T1] HugeTLB: 16380 KiB vmemmap can be freed for a 1.00 GiB page
> [ 5.543214][ T1] HugeTLB: registered 2.00 MiB page size, pre-allocated 0 pages
> [ 5.545062][ T1] HugeTLB: 28 KiB vmemmap can be freed for a 2.00 MiB page
> [ 5.569577][ T1] cryptd: max_cpu_qlen set to 1000
> [ 5.642228][ T1] raid6: avx2x4 gen() 2106 MB/s
> [ 5.710561][ T1] raid6: avx2x2 gen() 1236 MB/s
> [ 5.778767][ T1] raid6: avx2x1 gen() 682 MB/s
> [ 5.779705][ T1] raid6: using algorithm avx2x4 gen() 2106 MB/s
> [ 5.846672][ T1] raid6: .... xor() 1525 MB/s, rmw enabled
> [ 5.847684][ T1] raid6: using avx2x2 recovery algorithm
> [ 5.857729][ T1] gpio-f7188x: Unsupported Fintek device 0xffff
> [ 5.858863][ T1] gpio-f7188x: Unsupported Fintek device 0xffff
> [ 5.873370][ T1] ACPI: Added _OSI(Module Device)
> [ 5.874276][ T1] ACPI: Added _OSI(Processor Device)
> [ 5.875173][ T1] ACPI: Added _OSI(3.0 _SCP Extensions)
> [ 5.876101][ T1] ACPI: Added _OSI(Processor Aggregator Device)
> [ 5.939822][ T1] ACPI: 1 ACPI AML tables successfully acquired and loaded
> [ 5.964305][ T1] ACPI: Interpreter enabled
> [ 5.965793][ T1] ACPI: PM: (supports S0 S3 S4 S5)
> [ 5.966660][ T1] ACPI: Using IOAPIC for interrupt routing
> [ 5.977860][ T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
> [ 5.979446][ T1] PCI: Using E820 reservations for host bridge windows
> [ 6.180310][ T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
> [ 6.181633][ T1] acpi PNP0A03:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI EDR HPX-Type3]
> [ 6.209674][ T1] acpiphp: Slot [3] registered
> [ 6.211153][ T1] acpiphp: Slot [4] registered
> [ 6.212641][ T1] acpiphp: Slot [5] registered
> [ 6.214138][ T1] acpiphp: Slot [6] registered
> [ 6.215603][ T1] acpiphp: Slot [7] registered
> [ 6.217113][ T1] acpiphp: Slot [8] registered
> [ 6.218653][ T1] acpiphp: Slot [9] registered
> [ 6.220214][ T1] acpiphp: Slot [10] registered
> [ 6.221689][ T1] acpiphp: Slot [11] registered
> [ 6.223189][ T1] acpiphp: Slot [12] registered
> [ 6.224671][ T1] acpiphp: Slot [13] registered
> [ 6.226180][ T1] acpiphp: Slot [14] registered
> [ 6.227663][ T1] acpiphp: Slot [15] registered
> [ 6.229069][ T1] acpiphp: Slot [16] registered
> [ 6.230551][ T1] acpiphp: Slot [17] registered
> [ 6.232083][ T1] acpiphp: Slot [18] registered
> [ 6.233581][ T1] acpiphp: Slot [19] registered
> [ 6.235072][ T1] acpiphp: Slot [20] registered
> [ 6.236696][ T1] acpiphp: Slot [21] registered
> [ 6.238170][ T1] acpiphp: Slot [22] registered
> [ 6.240198][ T1] acpiphp: Slot [23] registered
> [ 6.241702][ T1] acpiphp: Slot [24] registered
> [ 6.243199][ T1] acpiphp: Slot [25] registered
> [ 6.244767][ T1] acpiphp: Slot [26] registered
> [ 6.246248][ T1] acpiphp: Slot [27] registered
> [ 6.247762][ T1] acpiphp: Slot [28] registered
> [ 6.249079][ T1] acpiphp: Slot [29] registered
> [ 6.250584][ T1] acpiphp: Slot [30] registered
> [ 6.252431][ T1] acpiphp: Slot [31] registered
> [ 6.253416][ T1] PCI host bridge to bus 0000:00
> [ 6.254419][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window]
> [ 6.255715][ T1] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window]
> [ 6.256588][ T1] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
> [ 6.257991][ T1] pci_bus 0000:00: root bus resource [mem 0x80000000-0xfebfffff window]
> [ 6.259588][ T1] pci_bus 0000:00: root bus resource [mem 0x100000000-0x17fffffff window]
> [ 6.260625][ T1] pci_bus 0000:00: root bus resource [bus 00-ff]
> [ 6.262534][ T1] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 conventional PCI endpoint
> [ 6.269704][ T1] pci 0000:00:01.0: [8086:7000] type 00 class 0x060100 conventional PCI endpoint
> [ 6.275747][ T1] pci 0000:00:01.1: [8086:7010] type 00 class 0x010180 conventional PCI endpoint
> [ 6.278696][ T1] pci 0000:00:01.1: BAR 4 [io 0xc0c0-0xc0cf]
> [ 6.280560][ T1] pci 0000:00:01.1: BAR 0 [io 0x01f0-0x01f7]: legacy IDE quirk
> [ 6.281858][ T1] pci 0000:00:01.1: BAR 1 [io 0x03f6]: legacy IDE quirk
> [ 6.283503][ T1] pci 0000:00:01.1: BAR 2 [io 0x0170-0x0177]: legacy IDE quirk
> [ 6.288593][ T1] pci 0000:00:01.1: BAR 3 [io 0x0376]: legacy IDE quirk
> [ 6.293874][ T1] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000 conventional PCI endpoint
> [ 6.295987][ T1] pci 0000:00:01.3: quirk: [io 0x0600-0x063f] claimed by PIIX4 ACPI
> [ 6.296617][ T1] pci 0000:00:01.3: quirk: [io 0x0700-0x070f] claimed by PIIX4 SMB
> [ 6.302219][ T1] pci 0000:00:02.0: [1234:1111] type 00 class 0x030000 conventional PCI endpoint
> [ 6.304399][ T1] pci 0000:00:02.0: BAR 0 [mem 0xfd000000-0xfdffffff pref]
> [ 6.307558][ T1] pci 0000:00:02.0: BAR 2 [mem 0xfebf0000-0xfebf0fff]
> [ 6.312381][ T1] pci 0000:00:02.0: ROM [mem 0xfebe0000-0xfebeffff pref]
> [ 6.313749][ T1] pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
> [ 6.319129][ T1] pci 0000:00:03.0: [8086:100e] type 00 class 0x020000 conventional PCI endpoint
> [ 6.321311][ T1] pci 0000:00:03.0: BAR 0 [mem 0xfebc0000-0xfebdffff]
> [ 6.323008][ T1] pci 0000:00:03.0: BAR 1 [io 0xc080-0xc0bf]
> [ 6.328110][ T1] pci 0000:00:03.0: ROM [mem 0xfeb80000-0xfebbffff pref]
> [ 6.368480][ T1] pci 0000:00:04.0: [1af4:1001] type 00 class 0x010000 conventional PCI endpoint
> [ 6.371126][ T1] pci 0000:00:04.0: BAR 0 [io 0xc000-0xc07f]
> [ 6.372917][ T1] pci 0000:00:04.0: BAR 1 [mem 0xfebf1000-0xfebf1fff]
> [ 6.376846][ T1] pci 0000:00:04.0: BAR 4 [mem 0xfe000000-0xfe003fff 64bit pref]
> [ 6.439241][ T1] ACPI: PCI: Interrupt link LNKA configured for IRQ 10
> [ 6.443375][ T1] ACPI: PCI: Interrupt link LNKB configured for IRQ 10
> [ 6.447633][ T1] ACPI: PCI: Interrupt link LNKC configured for IRQ 11
> [ 6.452209][ T1] ACPI: PCI: Interrupt link LNKD configured for IRQ 11
> [ 6.454833][ T1] ACPI: PCI: Interrupt link LNKS configured for IRQ 9
> [ 6.532788][ T1] iommu: Default domain type: Translated
> [ 6.533828][ T1] iommu: DMA domain TLB invalidation policy: lazy mode
> [ 10.476963][ T1] arm-v7s io-pgtable: self test ok
> [ 10.478246][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x40201000, IAS 32
> [ 10.481895][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x40201000, IAS 36
> [ 10.484960][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x40201000, IAS 40
> [ 10.488974][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x40201000, IAS 42
> [ 10.493045][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x40201000, IAS 44
> [ 10.496847][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x40201000, IAS 48
> [ 10.500416][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x02004000, IAS 32
> [ 10.503540][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x02004000, IAS 36
> [ 10.505519][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x02004000, IAS 40
> [ 10.508762][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x02004000, IAS 42
> [ 10.511976][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x02004000, IAS 44
> [ 10.513376][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x02004000, IAS 48
> [ 10.515942][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x20010000, IAS 32
> [ 10.521041][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x20010000, IAS 36
> [ 10.522773][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x20010000, IAS 40
> [ 10.524702][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x20010000, IAS 42
> [ 10.529453][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x20010000, IAS 44
> [ 10.533154][ T1] arm-lpae io-pgtable: selftest: pgsize_bitmap 0x20010000, IAS 48
> [ 10.536832][ T1] arm-lpae io-pgtable: selftest: completed with 18 PASS 0 FAIL
> [ 10.568995][ T1] SCSI subsystem initialized
> [ 10.577169][ T1] ACPI: bus type USB registered
> [ 10.579609][ T1] usbcore: registered new interface driver usbfs
> [ 10.581026][ T1] usbcore: registered new interface driver hub
> [ 10.583284][ T1] usbcore: registered new device driver usb
> [ 10.598385][ T1] mc: Linux media interface: v0.10
> [ 10.600200][ T1] videodev: Linux video capture interface: v2.00
> [ 10.604267][ T1] pps_core: LinuxPPS API ver. 1 registered
> [ 10.605232][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@...ux.it>
> [ 10.607396][ T1] PTP clock support registered
> [ 10.614713][ T1] EDAC MC: Ver: 3.0.0
> [ 10.623250][ T1] scmi_core: SCMI protocol bus registered
> [ 10.636772][ T1] FPGA manager framework
> [ 10.644710][ T1] Advanced Linux Sound Architecture Driver Initialized.
> [ 10.658367][ T1] Bluetooth: Core ver 2.22
> [ 10.659535][ T1] NET: Registered PF_BLUETOOTH protocol family
> [ 10.660519][ T1] Bluetooth: HCI device and connection manager initialized
> [ 10.661779][ T1] Bluetooth: HCI socket layer initialized
> [ 10.662743][ T1] Bluetooth: L2CAP socket layer initialized
> [ 10.663786][ T1] Bluetooth: SCO socket layer initialized
> [ 10.664585][ T1] NET: Registered PF_ATMPVC protocol family
> [ 10.665569][ T1] NET: Registered PF_ATMSVC protocol family
> [ 10.667228][ T1] NetLabel: Initializing
> [ 10.668014][ T1] NetLabel: domain hash size = 128
> [ 10.672445][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO
> [ 10.674645][ T1] NetLabel: unlabeled traffic allowed by default
> [ 10.685543][ T1] nfc: nfc_init: NFC Core ver 0.1
> [ 10.687320][ T1] NET: Registered PF_NFC protocol family
> [ 10.688667][ T1] mctp: management component transport protocol core
> [ 10.690320][ T1] NET: Registered PF_MCTP protocol family
> [ 10.692520][ T1] PCI: Using ACPI for IRQ routing
> [ 10.696811][ T1] pci 0000:00:02.0: vgaarb: setting as boot VGA device
> [ 10.699721][ T1] pci 0000:00:02.0: vgaarb: bridge control possible
> [ 10.700086][ T1] pci 0000:00:02.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none
> [ 10.700186][ T1] vgaarb: loaded
> [ 10.711505][ T1] dcdbas dcdbas: Dell Systems Management Base Driver (version 5.6.0-3.4)
> [ 10.714089][ T1] dcdbas dcdbas: Dell Systems Management Base Driver (version 5.6.0-3.4)
> [ 10.730012][ T1] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
> [ 10.731110][ T1] hpet0: 3 comparators, 64-bit 100.000000 MHz counter
> [ 10.740331][ T1] clocksource: Switched to clocksource kvm-clock
> [ 18.363721][ T1] VFS: Disk quotas dquot_6.6.0
> [ 18.365758][ T1] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
> [ 18.371878][ T1] netfs: FS-Cache loaded
> [ 18.376394][ T1] CacheFiles: Loaded
> [ 18.379163][ T1] TOMOYO: 2.6.0
> [ 18.380280][ T1] Mandatory Access Control activated.
> [ 18.386547][ T1] AppArmor: AppArmor Filesystem Enabled
> [ 18.388723][ T1] pnp: PnP ACPI init
> [ 18.407893][ T1] pnp: PnP ACPI: found 6 devices
> [ 18.556385][ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
> [ 18.566380][ T1] NET: Registered PF_INET protocol family
> [ 18.568004][ T1] IP idents hash table entries: 32768 (order: 6, 262144 bytes, linear)
> [ 18.578587][ T1] tcp_listen_portaddr_hash hash table entries: 1024 (order: 4, 81920 bytes, linear)
> [ 18.580619][ T1] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, linear)
> [ 18.582149][ T1] TCP established hash table entries: 16384 (order: 5, 131072 bytes, linear)
> [ 18.593140][ T1] TCP bind hash table entries: 16384 (order: 9, 2621440 bytes, linear)
> [ 18.600556][ T1] TCP: Hash tables configured (established 16384 bind 16384)
> [ 18.603648][ T1] MPTCP token hash table entries: 2048 (order: 5, 196608 bytes, linear)
> [ 18.605974][ T1] UDP hash table entries: 1024 (order: 5, 196608 bytes, linear)
> [ 18.608270][ T1] UDP-Lite hash table entries: 1024 (order: 5, 196608 bytes, linear)
> [ 18.611604][ T1] NET: Registered PF_UNIX/PF_LOCAL protocol family
> [ 18.618430][ T1] RPC: Registered named UNIX socket transport module.
> [ 18.619773][ T1] RPC: Registered udp transport module.
> [ 18.620716][ T1] RPC: Registered tcp transport module.
> [ 18.621638][ T1] RPC: Registered tcp-with-tls transport module.
> [ 18.622727][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module.
> [ 18.638132][ T1] NET: Registered PF_XDP protocol family
> [ 18.640298][ T1] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window]
> [ 18.643124][ T1] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window]
> [ 18.645537][ T1] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window]
> [ 18.648405][ T1] pci_bus 0000:00: resource 7 [mem 0x80000000-0xfebfffff window]
> [ 18.651392][ T1] pci_bus 0000:00: resource 8 [mem 0x100000000-0x17fffffff window]
> [ 18.656263][ T1] pci 0000:00:01.0: PIIX3: Enabling Passive Release
> [ 18.658482][ T1] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
> [ 18.662416][ T1] PCI: CLS 0 bytes, default 64
> [ 18.665882][ T1] ACPI: bus type thunderbolt registered
> [ 18.680963][ T1] kvm_intel: VMX not supported by CPU 2
> [ 18.682418][ T1] kvm_amd: TSC scaling supported
> [ 18.683476][ T1] kvm_amd: Nested Virtualization enabled
> [ 18.684429][ T1] kvm_amd: Nested Paging enabled
> [ 18.685277][ T1] kvm_amd: LBR virtualization supported
> [ 18.686247][ T1] kvm_amd: Virtual VMLOAD VMSAVE supported
> [ 18.687256][ T1] kvm_amd: Virtual GIF supported
> [ 18.771577][ T1] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x325b12d0341, max_idle_ns: 440795304325 ns
> [ 18.773933][ T1] mce: Machine check injector initialized
> [ 18.805719][ T1] AES CTR mode by8 optimization enabled
> [ 18.814729][ T1] AVX512/GFNI instructions are not detected.
> [ 18.817638][ T1] Beginning ww mutex selftests
> [ 19.274663][ C3] workqueue: test_mutex_work hogged CPU for >10000us 4 times, consider switching to WQ_UNBOUND
> [ 21.322810][ T16] stress (stress_inorder_work) failed with -35
> [ 25.431462][ T1] All ww mutex selftests passed
> [ 25.454244][ T1] ====[ backtrace testing ]===========
> [ 25.455172][ T1] Testing a backtrace from process context.
> [ 25.456336][ T1] The following trace is a kernel self test and not a bug!
> [ 25.457414][ T1] CPU: 2 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.13.0-rc2+ #373 5a5c0ce8f09b0b72067981f01985e201a0118bb6
> [ 25.458830][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014
> [ 25.458830][ T1] Call Trace:
> [ 25.458830][ T1] <TASK>
> [ 25.458830][ T1] dump_stack_lvl+0x1b5/0x2c0
> [ 25.458830][ T1] ? __pfx_backtrace_regression_test+0x40/0x40
> [ 25.458830][ T1] dump_stack+0x1e/0x2a
> [ 25.458830][ T1] backtrace_regression_test+0x54/0x115
> [ 25.458830][ T1] ? __pfx_backtrace_regression_test+0x40/0x40
> [ 25.458830][ T1] ? srso_return_thunk+0x5/0x7f
> [ 25.458830][ T1] ? trace_initcall_start+0x9e/0x240
> [ 25.458830][ T1] ? __pfx_backtrace_regression_test+0x40/0x40
> [ 25.458830][ T1] ? __pfx_backtrace_regression_test+0x40/0x40
> [ 25.458830][ T1] do_one_initcall+0xa7/0x500
> [ 25.458830][ T1] do_initcalls+0x1d5/0x240
> [ 25.458830][ T1] kernel_init_freeable+0x1e4/0x280
> [ 25.458830][ T1] ? __pfx_kernel_init+0x40/0x40
> [ 25.458830][ T1] kernel_init+0x2a/0x280
> [ 25.458830][ T1] ret_from_fork+0x4d/0x80
> [ 25.458830][ T1] ? __pfx_kernel_init+0x40/0x40
> [ 25.458830][ T1] ret_from_fork_asm+0x22/0x80
> [ 25.458830][ T1] </TASK>
> [ 25.477500][ T1] Testing a backtrace from BH context.
> [ 25.478362][ T1] The following trace is a kernel self test and not a bug!
> [ 25.479677][ C2] CPU: 2 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.13.0-rc2+ #373 5a5c0ce8f09b0b72067981f01985e201a0118bb6
> [ 25.481581][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014
> [ 25.483043][ C2] Call Trace:
> [ 25.483090][ C2] <IRQ>
> [ 25.483090][ C2] dump_stack_lvl+0x1b5/0x2c0
> [ 25.483090][ C2] ? process_one_work+0x8f0/0xb40
> [ 25.483090][ C2] dump_stack+0x1e/0x2a
> [ 25.483090][ C2] backtrace_test_bh_workfn+0x1c/0x40
> [ 25.483090][ C2] process_one_work+0x968/0xb40
> [ 25.483090][ C2] ? process_one_work+0x8f0/0xb40
> [ 25.483090][ C2] ? process_one_work+0x8f0/0xb40
> [ 25.483090][ C2] bh_worker+0x56b/0x640
> [ 25.483090][ C2] ? srso_return_thunk+0x5/0x7f
> [ 25.483090][ C2] workqueue_softirq_action+0xe0/0x140
> [ 25.483090][ C2] tasklet_action+0x19/0x80
> [ 25.483090][ C2] handle_softirqs+0xfe/0x5c0
> [ 25.483090][ C2] ? srso_return_thunk+0x5/0x7f
> [ 25.483090][ C2] ? start_flush_work+0x335/0x880
> [ 25.483090][ C2] do_softirq+0x10c/0x180
> [ 25.483090][ C2] </IRQ>
> [ 25.483090][ C2] <TASK>
> [ 25.483090][ C2] __local_bh_enable_ip+0x148/0x180
> [ 25.483090][ C2] ? start_flush_work+0x335/0x880
> [ 25.483090][ C2] start_flush_work+0x5b5/0x880
> [ 25.483090][ C2] __flush_work+0x10e/0x240
> [ 25.483090][ C2] ? __pfx_wq_barrier_func+0x40/0x40
> [ 25.483090][ C2] flush_work+0x2b/0x40
> [ 25.483090][ C2] ? __pfx_backtrace_regression_test+0x40/0x40
> [ 25.483090][ C2] backtrace_regression_test+0x9c/0x115
> [ 25.483090][ C2] ? __pfx_backtrace_regression_test+0x40/0x40
> [ 25.483090][ C2] ? srso_return_thunk+0x5/0x7f
> [ 25.483090][ C2] ? trace_initcall_start+0x9e/0x240
> [ 25.483090][ C2] ? __pfx_backtrace_regression_test+0x40/0x40
> [ 25.483090][ C2] ? __pfx_backtrace_regression_test+0x40/0x40
> [ 25.483090][ C2] do_one_initcall+0xa7/0x500
> [ 25.483090][ C2] do_initcalls+0x1d5/0x240
> [ 25.483090][ C2] kernel_init_freeable+0x1e4/0x280
> [ 25.483090][ C2] ? __pfx_kernel_init+0x40/0x40
> [ 25.483090][ C2] kernel_init+0x2a/0x280
> [ 25.483090][ C2] ret_from_fork+0x4d/0x80
> [ 25.483090][ C2] ? __pfx_kernel_init+0x40/0x40
> [ 25.483090][ C2] ret_from_fork_asm+0x22/0x80
> [ 25.483090][ C2] </TASK>
> [ 25.520336][ T1] Testing a saved backtrace.
> [ 25.521105][ T1] The following trace is a kernel self test and not a bug!
> [ 25.522190][ T1] backtrace_regression_test+0xcf/0x115
> [ 25.523206][ T1] do_one_initcall+0xa7/0x500
> [ 25.524038][ T1] do_initcalls+0x1d5/0x240
> [ 25.524810][ T1] kernel_init_freeable+0x1e4/0x280
> [ 25.525676][ T1] kernel_init+0x2a/0x280
> [ 25.526426][ T1] ret_from_fork+0x4d/0x80
> [ 25.527260][ T1] ret_from_fork_asm+0x22/0x80
> [ 25.528115][ T1] ====[ end of backtrace testing ]====
> [ 25.573922][ T1] Initialise system trusted keyrings
> [ 25.575876][ T1] Key type blacklist registered
> [ 25.578277][ T1] workingset: timestamp_bits=36 max_order=19 bucket_order=0
> [ 30.667766][ T1] dmapool test: size:16 align:16 blocks:8192 time:5087085
> [ 35.747199][ T1] dmapool test: size:64 align:64 blocks:8192 time:5075431
> [ 40.981623][ T1] dmapool test: size:256 align:256 blocks:8192 time:5217728
> [ 42.284524][ T1] dmapool test: size:1024 align:1024 blocks:2048 time:1275536
> [ 43.007130][ T1] dmapool test: size:4096 align:4096 blocks:1024 time:698842
> [ 48.370682][ T1] dmapool test: size:68 align:32 blocks:8192 time:5316148
> [ 48.386172][ T1] zbud: loaded
> [ 48.398332][ T1] DLM installed
> [ 48.401409][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher
> [ 48.424204][ T1] NFS: Registering the id_resolver key type
> [ 48.425870][ T1] Key type id_resolver registered
> [ 48.427281][ T1] Key type id_legacy registered
> [ 48.428773][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
> [ 48.430969][ T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
> [ 48.441394][ T100] kworker/u16:6 (100) used greatest stack depth: 13480 bytes left
> [ 48.443160][ T1] utf8_selftest: init_test_ucd: Unable to load utf8 table.
> [ 48.459821][ T1] Key type cifs.spnego registered
> [ 48.462133][ T1] Key type cifs.idmap registered
> [ 48.472166][ T1] ntfs3: Enabled Linux POSIX ACLs support
> [ 48.473634][ T1] ntfs3: Warning: Activated 64 bits per cluster. Windows does not support this
> [ 48.476087][ T1] ntfs3: Read-only LZX/Xpress compression included
> [ 48.477890][ T1] efs: 1.0a - http://aeschi.ch.eu.org/efs/
> [ 48.478939][ T1] jffs2: version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc.
> [ 48.481936][ T1] romfs: ROMFS MTD (C) 2007 Red Hat, Inc.
> [ 48.483451][ T1] QNX4 filesystem 0.2.3 registered.
> [ 48.485365][ T1] qnx6: QNX6 filesystem 1.0.0 registered.
> [ 48.488674][ T1] fuse: init (API version 7.41)
> [ 48.494447][ T1] orangefs_debugfs_init: called with debug mask: :none: :0:
> [ 48.498194][ T1] orangefs_init: module version upstream loaded
> [ 48.499559][ T1] JFS: nTxBlock = 8192, nTxLock = 65536
> [ 48.532393][ T1] SGI XFS with ACLs, security attributes, realtime, scrub, repair, quota, fatal assert, debug enabled
> [ 48.541259][ T1] 9p: Installing v9fs 9p2000 file system support
> [ 48.542937][ T1] NILFS version 2 loaded
> [ 48.543688][ T1] befs: version: 0.9.3
> [ 48.545367][ T1] ocfs2: Registered cluster interface o2cb
> [ 48.547843][ T1] ocfs2: Registered cluster interface user
> [ 48.549799][ T1] OCFS2 User DLM kernel interface loaded
> [ 48.566077][ T1] gfs2: GFS2 installed
> [ 48.582956][ T1] ceph: loaded (mds proto 32)
> [ 48.591893][ T1] integrity: Platform Keyring initialized
> [ 48.592931][ T1] integrity: Machine keyring initialized
> [ 48.593866][ T1] Allocating IMA blacklist keyring.
> [ 48.914083][ T1] NET: Registered PF_ALG protocol family
> [ 48.915468][ T1] xor: automatically using best checksumming function avx
> [ 48.916911][ T1] async_tx: api initialized (async)
> [ 48.917817][ T1] Key type asymmetric registered
> [ 48.918800][ T1] Asymmetric key parser 'x509' registered
> [ 48.919849][ T1] Asymmetric key parser 'pkcs8' registered
> [ 48.920814][ T1] Key type pkcs7_test registered
> [ 48.922361][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 507)
> [ 48.925549][ T1] io scheduler mq-deadline registered
> [ 48.926468][ T1] io scheduler kyber registered
> [ 48.927484][ T1] io scheduler bfq registered
> [ 48.928904][ T1] testing lwq....
> [ 48.929569][ T1] lwq: run some threads
> [ 49.092522][ T1] lwq: dequeue first 50: 36(800) 85(798) 0(802) 23(801) 56(799) 86(798) 24(801) 37(800) 87(798) 57(799)
> [ 49.094831][ T1] lwq: ... 88(798) 25(801) 58(799) 89(798) 38(800) 90(798) 3(802) 60(799) 92(798) 26(801)
> [ 49.096884][ T1] lwq: ... 4(802) 39(800) 93(798) 61(799) 94(798) 1(802) 59(799) 40(800) 27(801) 62(799)
> [ 49.098923][ T1] lwq: ... 95(798) 41(800) 6(802) 5(802) 96(798) 63(799) 97(798) 28(801) 64(799) 91(798)
> [ 49.100976][ T1] lwq: ... 98(798) 2(802) 42(800) 7(802) 99(798) 65(799) 8(802) 43(800) 66(799) 9(802)
> [ 49.103008][ T1] lwq: delete the multiples of 3 (test lwq_for_each_safe())
> [ 49.104607][ T1] lwq: dequeue remaining: 29 67 10 68 44 11 70 46 13 71 31 47 14 73 32 49 17 16 76 50 77 19 74 34 22 80 79 52 53 82 20 83 35 55
> [ 49.126218][ T1] test_hexdump: all 1184 tests passed
> [ 49.127197][ T1]
> [ 49.127197][ T1] Start testing find_bit() with random-filled bitmap
> [ 49.140630][ T1] find_next_bit: 9710154 ns, 163808 iterations
> [ 49.151862][ T1] find_next_zero_bit: 9949113 ns, 163873 iterations
> [ 49.165443][ T1] find_last_bit: 12298312 ns, 163808 iterations
> [ 49.234082][ T1] find_nth_bit: 67282340 ns, 16552 iterations
> [ 49.299050][ T1] find_first_bit: 63633612 ns, 16553 iterations
> [ 50.771083][ T1] find_first_and_bit: 1470719309 ns, 32666 iterations
> [ 50.777968][ T1] find_next_and_bit: 5539477 ns, 73517 iterations
> [ 50.779283][ T1]
> [ 50.779283][ T1] Start testing find_bit() with sparse bitmap
> [ 50.783621][ T1] find_next_bit: 117050 ns, 654 iterations
> [ 50.804884][ T1] find_next_zero_bit: 19752252 ns, 327027 iterations
> [ 50.806279][ T1] find_last_bit: 126016 ns, 654 iterations
> [ 50.832973][ T1] find_nth_bit: 25211188 ns, 653 iterations
> [ 50.858323][ T1] find_first_bit: 24086076 ns, 654 iterations
> [ 50.859810][ T1] find_first_and_bit: 155783 ns, 1 iterations
> [ 50.861222][ T1] find_next_and_bit: 148428 ns, 1 iterations
> [ 50.864745][ T1] test_firmware: interface ready
> [ 50.866087][ T1] sysctl could not get directory: /debug/test_sysctl/mnt/mnt_error -30
> [ 50.869034][ T1] min_heap_test: test passed
> [ 50.869829][ T1] test_printf: loaded.
> [ 50.878047][ T1] test_printf: all 448 tests passed
> [ 50.879000][ T1] test_scanf: loaded.
> [ 50.925441][ T1] test_scanf: all 2545 tests passed
> [ 50.926322][ T1] test_bitmap: loaded.
> [ 50.931352][ T1] test_bitmap: parselist: 14: input is '0-2047:128/256' OK, Time: 6021
> [ 50.933153][ T1] test_bitmap: bitmap_print_to_pagebuf: input is '0-32767
> [ 50.933153][ T1] ', Time: 13946
> [ 51.646468][ T1] test_bitmap: Time spent in test_bitmap_read_perf: 25494540
> [ 51.687689][ T1] test_bitmap: Time spent in test_bitmap_write_perf: 39553165
> [ 51.705607][ T1] test_bitmap: all 390447 tests passed
> [ 51.706544][ T1] PA: 0x000019bfc0000000 for VA: 0xffffb70f80000000
> [ 51.707668][ T1] PA: 0x0000000004117b48 for VA: 0xffff9d4fc4117b48
> [ 51.709897][ T1] test_memcat_p: test passed
> [ 52.400793][ T1] test_meminit: all 11 tests in test_pages passed
> [ 52.586246][ T1] test_meminit: all 40 tests in test_kvmalloc passed
> [ 60.926960][ T1] test_meminit: all 70 tests in test_kmemcache passed
> [ 61.283974][ T1] test_meminit: all 10 tests in test_rcu_persistent passed
> [ 61.285210][ T1] test_meminit: all 131 tests passed!
> [ 61.338805][ T1] added new 256 MB chunk (total 1 chunks, 256 MB) PFNs [0xafff0000 0xb0000000)
> [ 61.388003][ T1] added new 256 MB chunk (total 1 chunks, 256 MB) PFNs [0xaffe0000 0xafff0000)
> [ 61.392725][ T1] HMM test module loaded. This is only for testing HMM.
> [ 61.394512][ T1] ref_tracker: reference already released.
> [ 61.394630][ T1] ref_tracker: allocated in:
> [ 61.394630][ T1] alloctest_ref_tracker_alloc1.constprop.0+0x27/0x40
> [ 61.394630][ T1] test_ref_tracker_init+0x83/0x240
> [ 61.394630][ T1] do_one_initcall+0xa7/0x500
> [ 61.394630][ T1] do_initcalls+0x1d5/0x240
> [ 61.394630][ T1] kernel_init_freeable+0x1e4/0x280
> [ 61.394630][ T1] kernel_init+0x2a/0x280
> [ 61.394630][ T1] ret_from_fork+0x4d/0x80
> [ 61.394630][ T1] ret_from_fork_asm+0x22/0x80
> [ 61.394630][ T1] ref_tracker: freed in:
> [ 61.394630][ T1] alloctest_ref_tracker_free.constprop.0+0x22/0x40
> [ 61.394630][ T1] test_ref_tracker_init+0x177/0x240
> [ 61.394630][ T1] do_one_initcall+0xa7/0x500
> [ 61.394630][ T1] do_initcalls+0x1d5/0x240
> [ 61.394630][ T1] kernel_init_freeable+0x1e4/0x280
> [ 61.394630][ T1] kernel_init+0x2a/0x280
> [ 61.394630][ T1] ret_from_fork+0x4d/0x80
> [ 61.394630][ T1] ret_from_fork_asm+0x22/0x80
> [ 61.415871][ T1] ------------[ cut here ]------------
> [ 61.416777][ T1] WARNING: CPU: 3 PID: 1 at lib/ref_tracker.c:255 ref_tracker_free.cold+0xd9/0xe5
> [ 61.418310][ T1] Modules linked in:
> [ 61.419104][ T1] CPU: 3 UID: 0 PID: 1 Comm: swapper/0 Tainted: G N 6.13.0-rc2+ #373 5a5c0ce8f09b0b72067981f01985e201a0118bb6
> [ 61.421154][ T1] Tainted: [N]=TEST
> [ 61.421846][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014
> [ 61.423442][ T1] RIP: 0010:ref_tracker_free.cold+0xd9/0xe5
> [ 61.424725][ T1] Code: c7 7b 6f bd aa e8 6e 70 e4 ff 4c 89 e7 e8 a6 5e bc 01 8b 7b 18 e8 9e 03 2f 04 e8 d9 80 8d 01 4c 89 ee 48 89 ef e8 0e 96 f5 12 <0f> 0b bb ea ff ff ff e9 ac 16 2f 04 e8 bd 80 8d 01 0f b6 f3 48 c7
> [ 61.427722][ T1] RSP: 0018:ffffb70f80013d40 EFLAGS: 00010246
> [ 61.428849][ T1] RAX: 0000000000000000 RBX: ffff9d4fc43a8200 RCX: 0000000000000000
> [ 61.430168][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
> [ 61.431557][ T1] RBP: ffffffffb8226d20 R08: 0000000000000000 R09: 0000000000000000
> [ 61.432970][ T1] R10: 0000000000000000 R11: 0000000000000000 R12: ffff9d4fc43a8218
> [ 61.434293][ T1] R13: 0000000000000282 R14: 0000000002500001 R15: ffff9d4fc43a8210
> [ 61.435670][ T1] FS: 0000000000000000(0000) GS:ffff9d503d600000(0000) knlGS:0000000000000000
> [ 61.437173][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 61.438238][ T1] CR2: 0000000000000000 CR3: 0000000056520000 CR4: 0000000000350ef0
> [ 61.439623][ T1] Call Trace:
> [ 61.440507][ T1] <TASK>
> [ 61.441099][ T1] ? __warn.cold+0x107/0x135
> [ 61.441945][ T1] ? ref_tracker_free.cold+0xd9/0xe5
> [ 61.442942][ T1] ? report_bug+0x223/0x3c0
> [ 61.443814][ T1] ? handle_bug+0x71/0x100
> [ 61.444609][ T1] ? exc_invalid_op+0x17/0x80
> [ 61.445450][ T1] ? asm_exc_invalid_op+0x1a/0x40
> [ 61.446398][ T1] ? ref_tracker_free.cold+0xd9/0xe5
> [ 61.447408][ T1] ? alloctest_ref_tracker_free.constprop.0+0x22/0x40
> [ 61.448544][ T1] ? test_ref_tracker_init+0x199/0x240
> [ 61.449504][ T1] ? do_one_initcall+0xa7/0x500
> [ 61.450354][ T1] ? do_initcalls+0x1d5/0x240
> [ 61.451244][ T1] ? kernel_init_freeable+0x1e4/0x280
> [ 61.452207][ T1] ? kernel_init+0x2a/0x280
> [ 61.453023][ T1] ? ret_from_fork+0x4d/0x80
> [ 61.453861][ T1] ? ret_from_fork_asm+0x22/0x80
> [ 61.454865][ T1] alloctest_ref_tracker_free.constprop.0+0x22/0x40
> [ 61.456114][ T1] test_ref_tracker_init+0x199/0x240
> [ 61.457059][ T1] ? __pfx_test_ref_tracker_init+0x40/0x40
> [ 61.458063][ T1] do_one_initcall+0xa7/0x500
> [ 61.459010][ T1] do_initcalls+0x1d5/0x240
> [ 61.459865][ T1] kernel_init_freeable+0x1e4/0x280
> [ 61.460769][ T1] ? __pfx_kernel_init+0x40/0x40
> [ 61.461644][ T1] kernel_init+0x2a/0x280
> [ 61.462441][ T1] ret_from_fork+0x4d/0x80
> [ 61.463333][ T1] ? __pfx_kernel_init+0x40/0x40
> [ 61.464252][ T1] ret_from_fork_asm+0x22/0x80
> [ 61.465209][ T1] </TASK>
> [ 61.465791][ T1] irq event stamp: 15484139
> [ 61.466578][ T1] hardirqs last enabled at (15484149): [<ffffffff910f2868>] __up_console_sem+0x168/0x1c0
> [ 61.468267][ T1] hardirqs last disabled at (15484160): [<ffffffff910f284d>] __up_console_sem+0x14d/0x1c0
> [ 61.469880][ T1] softirqs last enabled at (15483640): [<ffffffff90f92f55>] handle_softirqs+0x415/0x5c0
> [ 61.471546][ T1] softirqs last disabled at (15483621): [<ffffffff90f93241>] __irq_exit_rcu+0x101/0x180
> [ 61.473354][ T1] ---[ end trace 0000000000000000 ]---
> [ 61.474606][ T1] ref_tracker: selftest@...00000bb84478e has 1/2 users at
> [ 61.474606][ T1] test_ref_tracker_timer_func+0x2a/0x80
> [ 61.474606][ T1] call_timer_fn+0xf3/0x280
> [ 61.474606][ T1] __run_timers+0x5cc/0x680
> [ 61.474606][ T1] run_timer_base+0xb1/0x100
> [ 61.474606][ T1] run_timer_softirq+0x28/0x80
> [ 61.474606][ T1] handle_softirqs+0xfe/0x5c0
> [ 61.474606][ T1] __irq_exit_rcu+0x101/0x180
> [ 61.474606][ T1] irq_exit_rcu+0xe/0x40
> [ 61.474606][ T1] sysvec_apic_timer_interrupt+0xcf/0x140
> [ 61.474606][ T1] asm_sysvec_apic_timer_interrupt+0x1a/0x40
> [ 61.474606][ T1]
> [ 61.474975][ T1] ref_tracker: selftest@...00000bb84478e has 1/2 users at
> [ 61.474975][ T1] alloctest_ref_tracker_alloc1.constprop.0+0x27/0x40
> [ 61.474975][ T1] test_ref_tracker_init+0x77/0x240
> [ 61.474975][ T1] do_one_initcall+0xa7/0x500
> [ 61.474975][ T1] do_initcalls+0x1d5/0x240
> [ 61.474975][ T1] kernel_init_freeable+0x1e4/0x280
> [ 61.474975][ T1] kernel_init+0x2a/0x280
> [ 61.474975][ T1] ret_from_fork+0x4d/0x80
> [ 61.474975][ T1] ret_from_fork_asm+0x22/0x80
> [ 61.474975][ T1]
> [ 61.493553][ T1] ------------[ cut here ]------------
> [ 61.494468][ T1] WARNING: CPU: 3 PID: 1 at lib/ref_tracker.c:179 ref_tracker_dir_exit+0x27c/0x380
> [ 61.496086][ T1] Modules linked in:
> [ 61.496816][ T1] CPU: 3 UID: 0 PID: 1 Comm: swapper/0 Tainted: G W N 6.13.0-rc2+ #373 5a5c0ce8f09b0b72067981f01985e201a0118bb6
> [ 61.498891][ T1] Tainted: [W]=WARN, [N]=TEST
> [ 61.499690][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014
> [ 61.501250][ T1] RIP: 0010:ref_tracker_dir_exit+0x27c/0x380
> [ 61.502289][ T1] Code: b1 fd 4c 89 e7 e8 e4 51 8d fd 4d 8b 24 24 4c 39 2c 24 0f 85 56 ff ff ff e8 11 6e 5e fd 48 8b 74 24 10 48 89 ef e8 44 83 c6 0e <0f> 0b e8 fd 6d 5e fd 48 8d 5d 4c be 04 00 00 00 ba 04 00 00 00 48
> [ 61.505475][ T1] RSP: 0018:ffffb70f80013db0 EFLAGS: 00010246
> [ 61.506490][ T1] RAX: 0000000000000000 RBX: ffffffffb8226d78 RCX: 0000000000000000
> [ 61.507912][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
> [ 61.509238][ T1] RBP: ffffffffb8226d20 R08: 0000000000000000 R09: 0000000000000000
> [ 61.510561][ T1] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffb8226d78
> [ 61.511950][ T1] R13: ffffffffb8226d78 R14: ffffffffb8226d78 R15: ffffffffb8226d78
> [ 61.513274][ T1] FS: 0000000000000000(0000) GS:ffff9d503d600000(0000) knlGS:0000000000000000
> [ 61.514775][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 61.515888][ T1] CR2: 0000000000000000 CR3: 0000000056520000 CR4: 0000000000350ef0
> [ 61.517224][ T1] Call Trace:
> [ 61.517844][ T1] <TASK>
> [ 61.518421][ T1] ? __warn.cold+0x107/0x135
> [ 61.519318][ T1] ? ref_tracker_dir_exit+0x27c/0x380
> [ 61.520510][ T1] ? report_bug+0x223/0x3c0
> [ 61.521371][ T1] ? handle_bug+0x71/0x100
> [ 61.522178][ T1] ? exc_invalid_op+0x17/0x80
> [ 61.523073][ T1] ? asm_exc_invalid_op+0x1a/0x40
> [ 61.524031][ T1] ? ref_tracker_dir_exit+0x27c/0x380
> [ 61.525042][ T1] test_ref_tracker_init+0x1f5/0x240
> [ 61.525973][ T1] ? __pfx_test_ref_tracker_init+0x40/0x40
> [ 61.527041][ T1] do_one_initcall+0xa7/0x500
> [ 61.527962][ T1] do_initcalls+0x1d5/0x240
> [ 61.528811][ T1] kernel_init_freeable+0x1e4/0x280
> [ 61.529713][ T1] ? __pfx_kernel_init+0x40/0x40
> [ 61.530593][ T1] kernel_init+0x2a/0x280
> [ 61.531456][ T1] ret_from_fork+0x4d/0x80
> [ 61.532311][ T1] ? __pfx_kernel_init+0x40/0x40
> [ 61.533196][ T1] ret_from_fork_asm+0x22/0x80
> [ 61.534153][ T1] </TASK>
> [ 61.534810][ T1] irq event stamp: 15484617
> [ 61.535588][ T1] hardirqs last enabled at (15484627): [<ffffffff910f2868>] __up_console_sem+0x168/0x1c0
> [ 61.537414][ T1] hardirqs last disabled at (15484636): [<ffffffff910f284d>] __up_console_sem+0x14d/0x1c0
> [ 61.539089][ T1] softirqs last enabled at (15484212): [<ffffffff90f92f55>] handle_softirqs+0x415/0x5c0
> [ 61.540731][ T1] softirqs last disabled at (15484207): [<ffffffff90f93241>] __irq_exit_rcu+0x101/0x180
> [ 61.542343][ T1] ---[ end trace 0000000000000000 ]---
> [ 61.543315][ T1] test_div64: Starting 64bit/32bit division and modulo test
> [ 61.560638][ T1] test_div64: Completed 64bit/32bit division and modulo test, 0.016142247s elapsed
> [ 61.572224][ T1] crc32: CRC_LE_BITS = 64, CRC_BE BITS = 64
> [ 61.573205][ T1] crc32: self tests passed, processed 225944 bytes in 4609581 nsec
> [ 61.579229][ T1] crc32c: CRC_LE_BITS = 64
> [ 61.580013][ T1] crc32c: self tests passed, processed 112972 bytes in 2308783 nsec
> [ 61.967386][ T1] crc32_combine: 8373 self tests passed
> [ 62.346854][ T1] crc32c_combine: 8373 self tests passed
> [ 62.350988][ T1] xz_dec_test: module loaded
> [ 62.351784][ T1] xz_dec_test: Create a device node with 'mknod xz_dec_test c 505 0' and write .xz files to it.
> [ 62.357112][ T1] atomic64_test: passed for x86-64 platform with CX8 and with SSE
> [ 62.358513][ T1] glob: 64 self-tests passed, 0 failed
> [ 62.359566][ T1] rbtree testing
> [ 62.479782][ T1] -> test 1 (latency of nnodes insert+delete): 419732 cycles
> [ 62.604083][ T1] -> test 2 (latency of nnodes cached insert+delete): 427610 cycles
> [ 62.619169][ T1] -> test 3 (latency of inorder traversal): 39449 cycles
> [ 62.620514][ T1] -> test 4 (latency to fetch first node)
> [ 62.621473][ T1] non-cached: 623 cycles
> [ 62.622345][ T1] cached: 87 cycles
> [ 63.255580][ T1] augmented rbtree testing
> [ 63.457607][ T1] -> test 1 (latency of nnodes insert+delete): 705508 cycles
> [ 63.663982][ T1] -> test 2 (latency of nnodes cached insert+delete): 713570 cycles
> [ 64.707227][ T1] gpio_it87: no device
> [ 64.720568][ T1] usbcore: registered new interface driver gpio-mpsse
> [ 64.750427][ T1] gpio_winbond: chip ID at 2e is ffff
> [ 64.751406][ T1] gpio_winbond: not an our chip
> [ 64.752485][ T1] gpio_winbond: chip ID at 4e is ffff
> [ 64.753397][ T1] gpio_winbond: not an our chip
> [ 64.796797][ T1] leds_apu: No PC Engines APUv1 board detected. For APUv2,3 support, enable CONFIG_PCENGINES_APU2
> [ 64.807406][ T1] leds_ss4200: no LED devices found
> [ 64.835995][ T1] SPI driver leds_cr0014114 has no spi_device_id for crane,cr0014114
> [ 64.838242][ T1] SPI driver leds_el15203000 has no spi_device_id for crane,el15203000
> [ 64.840127][ T1] SPI driver leds_spi_byte has no spi_device_id for ubnt,acb-spi-led
> [ 64.864112][ T1] ledtrig-cpu: registered to indicate activity on CPUs
> [ 64.879756][ T1] cpcihp_zt5550: ZT5550 CompactPCI Hot Plug Driver version: 0.2
> [ 64.881769][ T1] cpcihp_generic: Generic port I/O CompactPCI Hot Plug Driver version: 0.1
> [ 64.883202][ T1] cpcihp_generic: not configured, disabling.
> [ 64.884617][ T1] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
> [ 64.922573][ T1] acpiphp_ibm: ibm_acpiphp_init: acpi_walk_namespace failed
> [ 64.965488][ T1] switchtec: loaded.
> [ 64.968881][ T1] SPI driver hx8357 has no spi_device_id for himax,hx8369
> [ 64.999403][ T1] rivafb_setup START
> [ 65.000627][ T1] nvidiafb_setup START
> [ 65.004022][ T1] VIA Graphics Integration Chipset framebuffer 2.4 initializing
> [ 65.013567][ T1] no IO addresses supplied
> [ 65.019640][ T1] hgafb: HGA card not detected.
> [ 65.021040][ T1] hgafb hgafb.0: probe with driver hgafb failed with error -22
> [ 65.041682][ T1] usbcore: registered new interface driver udlfb
> [ 65.044661][ T1] usbcore: registered new interface driver smscufx
> [ 65.049881][ T1] hv_vmbus: registering driver hyperv_fb
> [ 65.059809][ T1] uvesafb: failed to execute /sbin/v86d
> [ 65.060791][ T1] uvesafb: make sure that the v86d helper is installed and executable
> [ 65.062145][ T1] uvesafb: Getting VBE info block failed (eax=0x4f00, err=-2)
> [ 65.063512][ T1] uvesafb: vbe_init() failed with -22
> [ 65.064500][ T1] uvesafb uvesafb.0: probe with driver uvesafb failed with error -22
> [ 65.068350][ T1] IPMI message handler: version 39.2
> [ 65.070120][ T1] ipmi device interface
> [ 65.073336][ T1] ipmi_si: IPMI System Interface driver
> [ 65.077713][ T1] ipmi_si: Unable to find any System Interface(s)
> [ 65.078831][ T1] ipmi_ssif: IPMI SSIF Interface driver
> [ 65.081374][ T1] IPMI Watchdog: driver initialized
> [ 65.082257][ T1] IPMI poweroff: Copyright (C) 2004 MontaVista Software - IPMI Powerdown via sys_reboot
> [ 65.101967][ T1] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
> [ 65.158247][ T1] ERST DBG: ERST support is disabled.
> [ 65.169207][ T1] isapnp: Scanning for PnP cards...
> [ 65.527216][ T1] isapnp: No Plug & Play device found
> [ 65.765895][ T1] ioatdma: Intel(R) QuickData Technology Driver 5.00
> [ 65.768432][ T1] idxd driver failed to load without MOVDIR64B.
> [ 67.922319][ T1] ACPI: \_SB_.LNKD: Enabled at IRQ 11
> [ 73.260968][ T1] N_HDLC line discipline registered with maxframe=4096
> [ 73.262151][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
> [ 73.292531][ T1] 00:04: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
> [ 73.308991][ T1] printk: legacy console [ttyS0] disabled
> ** 15016 printk messages dropped **
> [ 73.260968][ T1] N_HDLC line discipline registered with maxframe=4096
> [ 73.262151][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
> [ 73.292531][ T1] 00:04: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
> [ 73.308991][ T1] printk: legacy console [ttyS0] disabled
> [ 73.312470][ T1] serial 00:04: Runtime PM usage count underflow!
> [ 73.350562][ T1] 00:04: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
> [ 73.351324][ T1] printk: legacy console [ttyS0] enabled
> [ 73.448187][ T1] Driver 'dfl-uart' was unable to register with bus_type 'dfl' because the bus was not initialized.
> [ 73.463638][ T1] Serial: AMBA driver
> [ 73.480306][ T1] msm_serial: driver initialized
> [ 73.484878][ T1] Freescale QUICC Engine UART device driver
> [ 73.490547][ T1] SuperH (H)SCI(F) driver initialized
> [ 73.493567][ T1] STMicroelectronics ASC driver initialized
> [ 73.495411][ T1] STM32 USART driver initialized
> [ 73.508748][ T1] MOXA Intellio family driver version 6.0k
> [ 73.517468][ T1] mmtimer: Hardware unsupported
> [ 73.520897][ T1] lp: driver loaded but no devices found
> [ 73.521798][ T1] Applicom driver: $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $
> [ 73.523381][ T1] ac.o: No PCI boards found.
> [ 73.524156][ T1] ac.o: For an ISA board you must supply memory and irq parameters.
> [ 73.530328][ T1] Non-volatile memory driver v1.3
> [ 73.557631][ T1] ------------[ cut here ]------------
> [ 73.558546][ T1] module-autoload: duplicate request for module parport_lowlevel
> [ 73.560269][ T1] WARNING: CPU: 3 PID: 1 at kernel/module/dups.c:184 kmod_dup_request_exists_wait+0x2b0/0x540
> [ 73.561932][ T1] Modules linked in:
> [ 73.562793][ T1] CPU: 3 UID: 0 PID: 1 Comm: swapper/0 Tainted: G W N 6.13.0-rc2+ #373 5a5c0ce8f09b0b72067981f01985e201a0118bb6
> [ 73.564839][ T1] Tainted: [W]=WARN, [N]=TEST
> [ 73.565638][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014
> [ 73.567232][ T1] RIP: 0010:kmod_dup_request_exists_wait+0x2b0/0x540
> [ 73.568391][ T1] Code: 12 00 83 e3 01 31 ff 89 de e8 2c 6a 12 00 84 db 0f 84 aa 0c 6a fe e8 5f 66 12 00 4c 89 e6 48 c7 c7 68 0e 1f aa e8 d0 89 db ff <0f> 0b e8 49 66 12 00 0f b6 74 24 06 31 ff e8 fd 69 12 00 45 84 ed
> [ 73.571569][ T1] RSP: 0018:ffffb70f80013ce0 EFLAGS: 00010246
> [ 73.572625][ T1] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
> [ 73.573981][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
> [ 73.575374][ T1] RBP: ffff9d4fc5411800 R08: 0000000000000000 R09: 0000000000000000
> [ 73.576745][ T1] R10: 0000000000000000 R11: 0000000000000000 R12: ffffb70f80013d40
> [ 73.578062][ T1] R13: 0000000000000001 R14: ffffb70f80013d24 R15: 001fffffffc00000
> [ 73.579435][ T1] FS: 0000000000000000(0000) GS:ffff9d503d600000(0000) knlGS:0000000000000000
> [ 73.580934][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 73.581995][ T1] CR2: 0000000000000000 CR3: 0000000056520000 CR4: 0000000000350ef0
> [ 73.583379][ T1] Call Trace:
> [ 73.584056][ T1] <TASK>
> [ 73.584636][ T1] ? __warn.cold+0x107/0x135
> [ 73.585475][ T1] ? kmod_dup_request_exists_wait+0x2b0/0x540
> [ 73.587147][ T1] ? report_bug+0x223/0x3c0
> [ 73.588524][ T1] ? handle_bug+0x71/0x100
> [ 73.589762][ T1] ? exc_invalid_op+0x17/0x80
> [ 73.591302][ T1] ? asm_exc_invalid_op+0x1a/0x40
> [ 73.593610][ T1] ? kmod_dup_request_exists_wait+0x2b0/0x540
> [ 73.596021][ T1] __request_module+0x1fc/0x400
> [ 73.597509][ T1] __parport_register_driver+0x140/0x180
> [ 73.599132][ T1] ppdev_init+0xa1/0x140
> [ 73.600388][ T1] ? __pfx_ppdev_init+0x40/0x40
> [ 73.601236][ T1] do_one_initcall+0xa7/0x500
> [ 73.602282][ T1] do_initcalls+0x1d5/0x240
> [ 73.603211][ T1] kernel_init_freeable+0x1e4/0x280
> [ 73.604115][ T1] ? __pfx_kernel_init+0x40/0x40
> [ 73.604991][ T1] kernel_init+0x2a/0x280
> [ 73.605777][ T1] ret_from_fork+0x4d/0x80
> [ 73.606591][ T1] ? __pfx_kernel_init+0x40/0x40
> [ 73.607529][ T1] ret_from_fork_asm+0x22/0x80
> [ 73.608528][ T1] </TASK>
> [ 73.609111][ T1] irq event stamp: 18153181
> [ 73.609880][ T1] hardirqs last enabled at (18153191): [<ffffffff910f2868>] __up_console_sem+0x168/0x1c0
> [ 73.611546][ T1] hardirqs last disabled at (18153202): [<ffffffff910f284d>] __up_console_sem+0x14d/0x1c0
> [ 73.613199][ T1] softirqs last enabled at (18153104): [<ffffffff90f92f55>] handle_softirqs+0x415/0x5c0
> [ 73.614846][ T1] softirqs last disabled at (18153093): [<ffffffff90f93241>] __irq_exit_rcu+0x101/0x180
> [ 73.616440][ T1] ---[ end trace 0000000000000000 ]---
> [ 73.617365][ T1] ppdev: user-space parallel port driver
> [ 73.618543][ T1] telclk_interrupt = 0xf non-mcpbl0010 hw.
> [ 73.619785][ T1] smapi::smapi_init, ERROR invalid usSmapiID
> [ 73.620803][ T1] mwave: tp3780i::tp3780I_InitializeBoardData: Error: SMAPI is not available on this machine
> [ 73.622381][ T1] mwave: mwavedd::mwave_init: Error: Failed to initialize board data
> [ 73.623753][ T1] mwave: mwavedd::mwave_init: Error: Failed to initialize
> [ 73.624925][ T1] Linux agpgart interface v0.103
> [ 73.630177][ T1] Hangcheck: starting hangcheck timer 0.9.1 (tick is 180 seconds, margin is 60 seconds).
> [ 73.645164][ T1] usbcore: registered new interface driver xillyusb
> [ 73.666788][ T1] ACPI: bus type drm_connector registered
> [ 73.675138][ T1] [drm] radeon kernel modesetting enabled.
> [ 73.677037][ T1] [drm] amdgpu kernel modesetting enabled.
> [ 73.680257][ T1] amdgpu: Virtual CRAT table created for CPU
> [ 73.682468][ T1] amdgpu: Topology: Add CPU node
> [ 73.684983][ T1] **************************************************************
> [ 73.686200][ T1] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
> [ 73.689714][ T1] ** **
> [ 73.690996][ T1] ** CONFIG_DRM_I915_REPLAY_GPU_HANGS_API builds are intended **
> [ 73.692225][ T1] ** for specific userspace graphics stack developers only! **
> [ 73.693434][ T1] ** **
> [ 73.694695][ T1] ** If you are seeing this message please report this to the **
> [ 73.695919][ T1] ** provider of your kernel build. **
> [ 73.697174][ T1] ** **
> [ 73.698578][ T1] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
> [ 73.699850][ T1] **************************************************************
> [ 73.723580][ T1] [drm] Initialized vgem 1.0.0 for vgem on minor 0
> [ 73.749611][ T1] [drm] Initialized vkms 1.0.0 for vkms on minor 1
> [ 73.928971][ T1] Console: switching to colour frame buffer device 128x48
> [ 73.989849][ T1] platform vkms: [drm] fb0: vkmsdrmfb frame buffer device
> [ 74.009342][ T1] usbcore: registered new interface driver udl
> [ 74.077481][ T1] SPI driver abt-y030xx067a has no spi_device_id for abt,y030xx067a
> [ 74.088805][ T1] SPI driver panel-ilitek-ili9322 has no spi_device_id for dlink,dir-685-panel
> [ 74.090492][ T1] SPI driver panel-ilitek-ili9322 has no spi_device_id for ilitek,ili9322
> [ 74.094556][ T1] SPI driver panel-innolux-ej030na has no spi_device_id for innolux,ej030na
> [ 74.106367][ T1] SPI driver nt39016 has no spi_device_id for kingdisplay,kd035g6-54nt
> [ 74.116623][ T1] SPI driver s6d27a1-panel has no spi_device_id for samsung,s6d27a1
> [ 74.120701][ T1] SPI driver panel-samsung-s6e63m0 has no spi_device_id for samsung,s6e63m0
> [ 74.177273][ T1] bochs-drm 0000:00:02.0: vgaarb: deactivate vga console
> [ 74.179388][ T1] [drm] Found bochs VGA, ID 0xb0c5.
> [ 74.180931][ T1] [drm] Framebuffer size 16384 kB @ 0xfd000000, mmio @ 0xfebf0000.
> [ 74.199314][ T1] [drm] Initialized bochs-drm 1.0.0 for 0000:00:02.0 on minor 2
> [ 74.265834][ T1] fbcon: bochs-drmdrmfb (fb1) is primary device
> [ 74.265882][ T1] fbcon: Remapping primary device, fb1, to tty 1-63
> [ 79.736367][ T1] bochs-drm 0000:00:02.0: [drm] fb1: bochs-drmdrmfb frame buffer device
> [ 79.800872][ T1] bochs-drm 0000:00:02.0: vgaarb: deactivate vga console
> [ 79.802400][ T1] BUG: kernel NULL pointer dereference, address: 000000000000020c
> [ 79.802448][ T1] #PF: supervisor write access in kernel mode
> [ 79.802498][ T1] #PF: error_code(0x0002) - not-present page
> [ 79.802545][ T1] PGD 0 P4D 0
> [ 79.802622][ T1] Oops: Oops: 0002 [#1] PREEMPT SMP DEBUG_PAGEALLOC NOPTI
> [ 79.802669][ T1] CPU: 2 UID: 0 PID: 1 Comm: swapper/0 Tainted: G W N 6.13.0-rc2+ #373 5a5c0ce8f09b0b72067981f01985e201a0118bb6
> [ 79.802669][ T1] Tainted: [W]=WARN, [N]=TEST
> [ 79.802669][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014
> [ 79.802669][ T1] RIP: 0010:fbcon_cursor+0xa9/0x3c0
> [ 79.802669][ T1] Code: c0 05 00 00 66 89 44 24 06 e8 f3 35 2a fd 0f b7 bb c0 05 00 00 e8 27 b8 e9 fc 49 8d bc 24 0c 02 00 00 49 89 c7 e8 d7 3d 2a fd <45> 89 bc 24 0c 02 00 00 48 8d bd e0 05 00 00 e8 c3 3b 2a fd 44 8b
> [ 79.802669][ T1] RSP: 0018:ffffb70f800136c0 EFLAGS: 00010046
> [ 79.802669][ T1] RAX: 0000000000000000 RBX: ffff9d4fc10a8800 RCX: 0000000000000000
> [ 79.802669][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
> [ 79.802669][ T1] RBP: ffff9d4fc54ba800 R08: 0000000000000000 R09: 0000000000000000
> [ 79.802669][ T1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
> [ 79.802669][ T1] R13: 0000000000000000 R14: ffff9d4fc54bade8 R15: 0000000000000032
> [ 79.802669][ T1] FS: 0000000000000000(0000) GS:ffff9d503d200000(0000) knlGS:0000000000000000
> [ 79.802669][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 79.802669][ T1] CR2: 000000000000020c CR3: 0000000056520000 CR4: 0000000000350ef0
> [ 79.802669][ T1] Call Trace:
> [ 79.802669][ T1] <TASK>
> [ 79.802669][ T1] ? __die+0x23/0x80
> [ 79.802669][ T1] ? page_fault_oops+0x21c/0x240
> [ 79.802669][ T1] ? do_user_addr_fault+0x893/0x1180
> [ 79.802669][ T1] ? srso_return_thunk+0x5/0x7f
> [ 79.802669][ T1] ? exc_page_fault+0x3f/0x180
> [ 79.802669][ T1] ? exc_page_fault+0x87/0x180
> [ 79.802669][ T1] ? asm_exc_page_fault+0x26/0x40
> [ 79.802669][ T1] ? fbcon_cursor+0xa9/0x3c0
> [ 79.802669][ T1] hide_cursor+0x66/0x1c0
> [ 79.802669][ T1] vt_console_print+0x9b1/0xa40
> [ 79.802669][ T1] ? srso_return_thunk+0x5/0x7f
> [ 79.802669][ T1] ? irq_trace+0x84/0xc0
> [ 79.802669][ T1] ? srso_return_thunk+0x5/0x7f
> [ 79.802669][ T1] ? console_emit_next_record+0x1fe/0x440
> [ 79.802669][ T1] console_emit_next_record+0x232/0x440
> [ 79.802669][ T1] ? console_emit_next_record+0x1fe/0x440
> [ 79.802669][ T1] console_flush_all+0x590/0x7c0
> [ 79.802669][ T1] ? console_flush_all+0x26/0x7c0
> [ 79.802669][ T1] console_unlock+0xf9/0x280
> [ 79.802669][ T1] vprintk_emit+0x572/0x5c0
> [ 79.802669][ T1] dev_vprintk_emit+0x70/0xc0
> [ 79.802669][ T1] ? __mutex_lock+0x380/0xd40
> [ 79.802669][ T1] dev_printk_emit+0x7f/0xc0
> [ 79.802669][ T1] __dev_printk+0x89/0x100
> [ 79.802669][ T1] _dev_info+0xba/0xf5
> [ 79.802669][ T1] vga_remove_vgacon.cold+0x18/0xc0
> [ 79.802669][ T1] aperture_remove_conflicting_pci_devices+0x142/0x1c0
> [ 79.802669][ T1] ? __pfx_bochs_pci_probe+0x40/0x40
> [ 79.802669][ T1] bochs_pci_probe+0x30/0x380
> [ 79.802669][ T1] local_pci_probe+0x88/0x100
> [ 79.802669][ T1] pci_call_probe+0x126/0x340
> [ 79.802669][ T1] ? srso_return_thunk+0x5/0x7f
> [ 79.802669][ T1] ? pci_match_device+0x287/0x380
> [ 79.802669][ T1] pci_device_probe+0x154/0x280
> [ 79.802669][ T1] ? __pfx_pci_device_probe+0x40/0x40
> [ 79.802669][ T1] really_probe+0x411/0x780
> [ 79.802669][ T1] __driver_probe_device+0x194/0x280
> [ 79.802669][ T1] driver_probe_device+0x6f/0x1c0
> [ 79.802669][ T1] __driver_attach+0x204/0x380
> [ 79.802669][ T1] ? __pfx___driver_attach+0x40/0x40
> [ 79.802669][ T1] bus_for_each_dev+0xe3/0x180
> [ 79.802669][ T1] driver_attach+0x3a/0x80
> [ 79.802669][ T1] bus_add_driver+0x1fd/0x3c0
> [ 79.802669][ T1] driver_register+0x11d/0x1c0
> [ 79.802669][ T1] __pci_register_driver+0x105/0x140
> [ 79.802669][ T1] bochs_pci_driver_init+0x8a/0xc0
> [ 79.802669][ T1] ? __pfx_bochs_pci_driver_init+0x40/0x40
> [ 79.802669][ T1] do_one_initcall+0xa7/0x500
> [ 79.802669][ T1] do_initcalls+0x1d5/0x240
> [ 79.802669][ T1] kernel_init_freeable+0x1e4/0x280
> [ 79.802669][ T1] ? __pfx_kernel_init+0x40/0x40
> [ 79.802669][ T1] kernel_init+0x2a/0x280
> [ 79.802669][ T1] ret_from_fork+0x4d/0x80
> [ 79.802669][ T1] ? __pfx_kernel_init+0x40/0x40
> [ 79.802669][ T1] ret_from_fork_asm+0x22/0x80
> [ 79.802669][ T1] </TASK>
> [ 79.802669][ T1] Modules linked in:
> [ 79.802669][ T1] CR2: 000000000000020c
> [ 79.802669][ T1] ---[ end trace 0000000000000000 ]---
> [ 79.802669][ T1] RIP: 0010:fbcon_cursor+0xa9/0x3c0
> [ 79.802669][ T1] Code: c0 05 00 00 66 89 44 24 06 e8 f3 35 2a fd 0f b7 bb c0 05 00 00 e8 27 b8 e9 fc 49 8d bc 24 0c 02 00 00 49 89 c7 e8 d7 3d 2a fd <45> 89 bc 24 0c 02 00 00 48 8d bd e0 05 00 00 e8 c3 3b 2a fd 44 8b
> [ 79.802669][ T1] RSP: 0018:ffffb70f800136c0 EFLAGS: 00010046
> [ 79.802669][ T1] RAX: 0000000000000000 RBX: ffff9d4fc10a8800 RCX: 0000000000000000
> [ 79.802669][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
> [ 79.802669][ T1] RBP: ffff9d4fc54ba800 R08: 0000000000000000 R09: 0000000000000000
> [ 79.802669][ T1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
> [ 79.802669][ T1] R13: 0000000000000000 R14: ffff9d4fc54bade8 R15: 0000000000000032
> [ 79.802669][ T1] FS: 0000000000000000(0000) GS:ffff9d503d200000(0000) knlGS:0000000000000000
> [ 79.802669][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 79.802669][ T1] CR2: 000000000000020c CR3: 0000000056520000 CR4: 0000000000350ef0
> [ 79.802669][ T1] Kernel panic - not syncing: Fatal exception
> [ 79.802669][ T1] Kernel Offset: 0xe800000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
> [ 79.802669][ T1] ---[ end Kernel panic - not syncing: Fatal exception ]---
>
>
>
> > Best regards
> > Thomas
> >
> > [1]
> > https://elixir.bootlin.com/linux/v6.12.5/source/drivers/pci/vgaarb.c#L173
> >
> >
> > >
> > > [ 73.569852][ T1] bochs-drm 0000:00:02.0: vgaarb: deactivate vga console
> > > [ 73.571802][ T1] [drm] Found bochs VGA, ID 0xb0c5.
> > > [ 73.572787][ T1] [drm] Framebuffer size 16384 kB @ 0xfd000000, mmio @ 0xfebf0000.
> > > [ 73.581626][ T1] [drm] Initialized bochs-drm 1.0.0 for 0000:00:02.0 on minor 2
> > > [ 73.650048][ T1] fbcon: bochs-drmdrmfb (fb1) is primary device
> > > [ 73.650134][ T1] fbcon: Remapping primary device, fb1, to tty 1-63
> > > [ 79.276550][ T1] bochs-drm 0000:00:02.0: [drm] fb1: bochs-drmdrmfb frame buffer device
> > > [ 79.346726][ T1] bochs-drm 0000:00:02.0: vgaarb: deactivate vga console
> > > [ 79.348731][ T1] BUG: kernel NULL pointer dereference, address: 000000000000020c
> > > [ 79.348799][ T1] #PF: supervisor write access in kernel mode
> > > [ 79.348857][ T1] #PF: error_code(0x0002) - not-present page
> > > [ 79.348913][ T1] PGD 0 P4D 0
> > > [ 79.348999][ T1] Oops: Oops: 0002 [#1] PREEMPT SMP DEBUG_PAGEALLOC NOPTI
> > > [ 79.349107][ T1] CPU: 2 UID: 0 PID: 1 Comm: swapper/0 Tainted: G W N 6.13.0-rc2+ #373 5a5c0ce8f09b0b72067981f01985e201a0118bb6
> > > [ 79.349268][ T1] Tainted: [W]=WARN, [N]=TEST
> > > [ 79.349313][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014
> > > [ 79.349377][ T1] RIP: 0010:fbcon_cursor+0xa9/0x3c0
> > > [ 79.349524][ T1] Code: c0 05 00 00 66 89 44 24 06 e8 f3 35 2a fd 0f b7 bb c0 05 00 00 e8 27 b8 e9 fc 49 8d bc 24 0c 02 00 00 49 89 c7 e8 d7 3d 2a fd <45> 89 bc 24 0c 02 00 00 48 8d bd e0 05 00 00 e8 c3 3b 2a fd 44 8b
> > > [ 79.349628][ T1] RSP: 0018:ffffb927800136c0 EFLAGS: 00010046
> > > [ 79.349716][ T1] RAX: 0000000000000000 RBX: ffff9835810a8800 RCX: 0000000000000000
> > > [ 79.349808][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
> > > [ 79.349879][ T1] RBP: ffff983585d07000 R08: 0000000000000000 R09: 0000000000000000
> > > [ 79.349952][ T1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
> > > [ 79.350024][ T1] R13: 0000000000000000 R14: ffff983585d075e8 R15: 0000000000000032
> > > [ 79.350101][ T1] FS: 0000000000000000(0000) GS:ffff9835fd200000(0000) knlGS:0000000000000000
> > > [ 79.350196][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> > > [ 79.350278][ T1] CR2: 000000000000020c CR3: 000000004d920000 CR4: 0000000000350ef0
> > > [ 79.350344][ T1] Call Trace:
> > > [ 79.350373][ T1] <TASK>
> > > [ 79.350413][ T1] ? __die+0x23/0x80
> > > [ 79.350540][ T1] ? page_fault_oops+0x21c/0x240
> > > [ 79.350675][ T1] ? do_user_addr_fault+0x893/0x1180
> > > [ 79.350798][ T1] ? srso_return_thunk+0x5/0x7f
> > > [ 79.350904][ T1] ? exc_page_fault+0x3f/0x180
> > > [ 79.351066][ T1] ? exc_page_fault+0x87/0x180
> > > [ 79.351211][ T1] ? asm_exc_page_fault+0x26/0x40
> > > [ 79.351379][ T1] ? fbcon_cursor+0xa9/0x3c0
> > > [ 79.351542][ T1] hide_cursor+0x66/0x1c0
> > > [ 79.351656][ T1] vt_console_print+0x9b1/0xa40
> > > [ 79.351813][ T1] ? srso_return_thunk+0x5/0x7f
> > > [ 79.351920][ T1] ? irq_trace+0x84/0xc0
> > > [ 79.352029][ T1] ? srso_return_thunk+0x5/0x7f
> > > [ 79.352153][ T1] ? console_emit_next_record+0x1fe/0x440
> > > [ 79.352254][ T1] console_emit_next_record+0x232/0x440
> > > [ 79.352333][ T1] ? console_emit_next_record+0x1fe/0x440
> > > [ 79.352450][ T1] console_flush_all+0x590/0x7c0
> > > [ 79.352531][ T1] ? console_flush_all+0x26/0x7c0
> > > [ 79.352601][ T1] console_unlock+0xf9/0x280
> > > [ 79.352601][ T1] vprintk_emit+0x572/0x5c0
> > > [ 79.352601][ T1] dev_vprintk_emit+0x70/0xc0
> > > [ 79.352601][ T1] ? __mutex_lock+0x380/0xd40
> > > [ 79.352601][ T1] dev_printk_emit+0x7f/0xc0
> > > [ 79.352601][ T1] __dev_printk+0x89/0x100
> > > [ 79.352601][ T1] _dev_info+0xba/0xf5
> > > [ 79.352601][ T1] vga_remove_vgacon.cold+0x18/0xc0
> > > [ 79.352601][ T1] aperture_remove_conflicting_pci_devices+0x142/0x1c0
> > > [ 79.352601][ T1] ? __pfx_bochs_pci_probe+0x40/0x40
> > > [ 79.352601][ T1] bochs_pci_probe+0x30/0x380
> > > [ 79.352601][ T1] local_pci_probe+0x88/0x100
> > > [ 79.352601][ T1] pci_call_probe+0x126/0x340
> > > [ 79.352601][ T1] ? srso_return_thunk+0x5/0x7f
> > > [ 79.352601][ T1] ? pci_match_device+0x287/0x380
> > > [ 79.352601][ T1] pci_device_probe+0x154/0x280
> > > [ 79.352601][ T1] ? __pfx_pci_device_probe+0x40/0x40
> > > [ 79.352601][ T1] really_probe+0x411/0x780
> > > [ 79.352601][ T1] __driver_probe_device+0x194/0x280
> > > [ 79.352601][ T1] driver_probe_device+0x6f/0x1c0
> > > [ 79.352601][ T1] __driver_attach+0x204/0x380
> > > [ 79.352601][ T1] ? __pfx___driver_attach+0x40/0x40
> > > [ 79.352601][ T1] bus_for_each_dev+0xe3/0x180
> > > [ 79.352601][ T1] driver_attach+0x3a/0x80
> > > [ 79.352601][ T1] bus_add_driver+0x1fd/0x3c0
> > > [ 79.352601][ T1] driver_register+0x11d/0x1c0
> > > [ 79.352601][ T1] __pci_register_driver+0x105/0x140
> > > [ 79.352601][ T1] bochs_pci_driver_init+0x8a/0xc0
> > > [ 79.352601][ T1] ? __pfx_bochs_pci_driver_init+0x40/0x40
> > > [ 79.352601][ T1] do_one_initcall+0xa7/0x500
> > > [ 79.352601][ T1] do_initcalls+0x1d5/0x240
> > > [ 79.352601][ T1] kernel_init_freeable+0x1e4/0x280
> > > [ 79.352601][ T1] ? __pfx_kernel_init+0x40/0x40
> > > [ 79.352601][ T1] kernel_init+0x2a/0x280
> > > [ 79.352601][ T1] ret_from_fork+0x4d/0x80
> > > [ 79.352601][ T1] ? __pfx_kernel_init+0x40/0x40
> > > [ 79.352601][ T1] ret_from_fork_asm+0x22/0x80
> > > [ 79.352601][ T1] </TASK>
> > > [ 79.352601][ T1] Modules linked in:
> > > [ 79.352601][ T1] CR2: 000000000000020c
> > > [ 79.352601][ T1] ---[ end trace 0000000000000000 ]---
> > > [ 79.352601][ T1] RIP: 0010:fbcon_cursor+0xa9/0x3c0
> > > [ 79.352601][ T1] Code: c0 05 00 00 66 89 44 24 06 e8 f3 35 2a fd 0f b7 bb c0 05 00 00 e8 27 b8 e9 fc 49 8d bc 24 0c 02 00 00 49 89 c7 e8 d7 3d 2a fd <45> 89 bc 24 0c 02 00 00 48 8d bd e0 05 00 00 e8 c3 3b 2a fd 44 8b
> > > [ 79.352601][ T1] RSP: 0018:ffffb927800136c0 EFLAGS: 00010046
> > > [ 79.352601][ T1] RAX: 0000000000000000 RBX: ffff9835810a8800 RCX: 0000000000000000
> > > [ 79.352601][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
> > > [ 79.352601][ T1] RBP: ffff983585d07000 R08: 0000000000000000 R09: 0000000000000000
> > > [ 79.352601][ T1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
> > > [ 79.352601][ T1] R13: 0000000000000000 R14: ffff983585d075e8 R15: 0000000000000032
> > > [ 79.352601][ T1] FS: 0000000000000000(0000) GS:ffff9835fd200000(0000) knlGS:0000000000000000
> > > [ 79.352601][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> > > [ 79.352601][ T1] CR2: 000000000000020c CR3: 000000004d920000 CR4: 0000000000350ef0
> > > [ 79.352601][ T1] Kernel panic - not syncing: Fatal exception
> > > [ 79.352601][ T1] Kernel Offset: 0xf800000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
> > > [ 79.352601][ T1] ---[ end Kernel panic - not syncing: Fatal exception ]---
> > >
> > > > Best regards
> > > > Thomas
> > > >
> > > >
> > > > > Dave
> > > > >
> > > > --
> > > > --
> > > > Thomas Zimmermann
> > > > Graphics Driver Developer
> > > > SUSE Software Solutions Germany GmbH
> > > > Frankenstrasse 146, 90461 Nuernberg, Germany
> > > > GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
> > > > HRB 36809 (AG Nuernberg)
> > > > From bebba3b34d5df5aa7c882f080633b43ddb87f4ad Mon Sep 17 00:00:00 2001
> > > > From: Thomas Zimmermann <tzimmermann@...e.de>
> > > > Date: Mon, 16 Dec 2024 09:21:46 +0100
> > > > Subject: [PATCH] drm/bochs: Do not put DRM device in PCI remove callback
> > > >
> > > > Removing the bochs PCI device should mark the DRM device as unplugged
> > > > without removing it. Hence clear the respective call to drm_dev_put()
> > > > from bochs_pci_remove().
> > > >
> > > > Fixes a double unref in devm_drm_dev_init_release(). An example error
> > > > message is shown below:
> > > >
> > > > [ 32.958338] BUG: KASAN: use-after-free in drm_dev_put.part.0+0x1b/0x90
> > > > [ 32.958850] Write of size 4 at addr ffff888152134004 by task (udev-worker)/591
> > > > [ 32.959574] CPU: 3 UID: 0 PID: 591 Comm: (udev-worker) Tainted: G E 6.13.0-rc2-1-default+ #3417
> > > > [ 32.960316] Tainted: [E]=UNSIGNED_MODULE
> > > > [ 32.960637] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-2-gc13ff2cd-prebuilt.qemu.org 04/01/2014
> > > > [ 32.961429] Call Trace:
> > > > [ 32.961433] <TASK>
> > > > [ 32.961439] dump_stack_lvl+0x68/0x90
> > > > [ 32.961452] print_address_description.constprop.0+0x88/0x330
> > > > [ 32.961461] ? preempt_count_sub+0x14/0xc0
> > > > [ 32.961473] print_report+0xe2/0x1d0
> > > > [ 32.961479] ? srso_alias_return_thunk+0x5/0xfbef5
> > > > [ 32.963725] ? __virt_addr_valid+0x143/0x320
> > > > [ 32.964077] ? srso_alias_return_thunk+0x5/0xfbef5
> > > > [ 32.964463] ? drm_dev_put.part.0+0x1b/0x90
> > > > [ 32.964817] kasan_report+0xce/0x1a0
> > > > [ 32.965123] ? drm_dev_put.part.0+0x1b/0x90
> > > > [ 32.965474] kasan_check_range+0xff/0x1c0
> > > > [ 32.965806] drm_dev_put.part.0+0x1b/0x90
> > > > [ 32.966138] release_nodes+0x84/0xc0
> > > > [ 32.966447] devres_release_all+0xd2/0x110
> > > > [ 32.966788] ? __pfx_devres_release_all+0x10/0x10
> > > > [ 32.967177] ? preempt_count_sub+0x14/0xc0
> > > > [ 32.967523] device_unbind_cleanup+0x16/0xc0
> > > > [ 32.967886] really_probe+0x1b7/0x570
> > > > [ 32.968207] __driver_probe_device+0xca/0x1b0
> > > > [ 32.968568] driver_probe_device+0x4a/0xf0
> > > > [ 32.968907] __driver_attach+0x10b/0x290
> > > > [ 32.969239] ? __pfx___driver_attach+0x10/0x10
> > > > [ 32.969598] bus_for_each_dev+0xc0/0x110
> > > > [ 32.969923] ? __pfx_bus_for_each_dev+0x10/0x10
> > > > [ 32.970291] ? bus_add_driver+0x17a/0x2b0
> > > > [ 32.970622] ? srso_alias_return_thunk+0x5/0xfbef5
> > > > [ 32.971011] bus_add_driver+0x19a/0x2b0
> > > > [ 32.971335] driver_register+0xd8/0x160
> > > > [ 32.971671] ? __pfx_bochs_pci_driver_init+0x10/0x10 [bochs]
> > > > [ 32.972130] do_one_initcall+0xba/0x390
> > > > [...]
> > > >
> > > > After unplugging the DRM device, clients will close their references.
> > > > Closing the final reference will also release the DRM device.
> > > >
> > > > Reported-by: Dr. David Alan Gilbert <dave@...blig.org>
> > > > Closes: https://lore.kernel.org/lkml/Z18dbfDAiFadsSdg@gallifrey/
> > > > Fixes: 04826f588682 ("drm/bochs: Allocate DRM device in struct bochs_device")
> > > > Cc: Thomas Zimmermann <tzimmermann@...e.de>
> > > > Cc: Gerd Hoffmann <kraxel@...hat.com>
> > > > Cc: virtualization@...ts.linux.dev
> > > > Signed-off-by: Thomas Zimmermann <tzimmermann@...e.de>
> > > > ---
> > > > drivers/gpu/drm/tiny/bochs.c | 1 -
> > > > 1 file changed, 1 deletion(-)
> > > >
> > > > diff --git a/drivers/gpu/drm/tiny/bochs.c b/drivers/gpu/drm/tiny/bochs.c
> > > > index 89a699370a59..c67e1f906785 100644
> > > > --- a/drivers/gpu/drm/tiny/bochs.c
> > > > +++ b/drivers/gpu/drm/tiny/bochs.c
> > > > @@ -757,7 +757,6 @@ static void bochs_pci_remove(struct pci_dev *pdev)
> > > > drm_dev_unplug(dev);
> > > > drm_atomic_helper_shutdown(dev);
> > > > - drm_dev_put(dev);
> > > > }
> > > > static void bochs_pci_shutdown(struct pci_dev *pdev)
> > > > --
> > > > 2.47.1
> > > >
> >
> > --
> > --
> > Thomas Zimmermann
> > Graphics Driver Developer
> > SUSE Software Solutions Germany GmbH
> > Frankenstrasse 146, 90461 Nuernberg, Germany
> > GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
> > HRB 36809 (AG Nuernberg)
> >
> --
> -----Open up your eyes, open up your mind, open up your code -------
> / Dr. David Alan Gilbert | Running GNU/Linux | Happy \
> \ dave @ treblig.org | | In Hex /
> \ _________________________|_____ http://www.treblig.org |_______/
>
--
-----Open up your eyes, open up your mind, open up your code -------
/ Dr. David Alan Gilbert | Running GNU/Linux | Happy \
\ dave @ treblig.org | | In Hex /
\ _________________________|_____ http://www.treblig.org |_______/
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