joi, 15 octombrie 2020

S.O Laborator 2

                                                            (s2 sgr2, L1)

Ce ar putea afla un incepator din mesajele nucleului Linux.  (partea I)

In rezumat ce aflam din mesajele sistemului:
- despre nucleu
- despre procesor
- despre puterea de calcul
- despre linia de comanda a nucleului
- despre usb-uri
- despre defectele procesorului
- despre power management si componente ACPI
- despre memorie
- despre defecte hardware
- despre microcod

Tastand dmesg: Cititi si incercati sa raspundeti la intrebari ...



1) De cand dateaza microcodul procesorului ?

[    0.000000] microcode: microcode updated early to revision 0xd6, date = 2020-04-27

2) Ce versiune are nucleul Linux ?

[    0.000000] Linux version 5.4.0-48-generic (buildd@lcy01-amd64-023) (gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)) #52~18.04.1-Ubuntu SMP Thu Sep 10 12:50:22 UTC 2020 (Ubuntu 5.4.0-48.52~18.04.1-generic 5.4.60)

3) Unde este stocat nucleul, in arborele de fisiere si directoare ?

[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-5.4.0-48-generic root=UUID=bfa8825e-c408-4084-a919-51ff18e208c1 ro quiet splash vt.handoff=1


4) Kernelul , nucleul, este un executabil C, care ruleaza cu parametri, in linia de comanda. Care sunt parametrii ?

[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-5.4.0-48-generic root=UUID=bfa8825e-c408-4084-a919-51ff18e208c1 ro quiet splash vt.handoff=1

5) Procesoare utilizabile cu acest nucleu ?

[    0.000000] KERNEL supported cpus:
[    0.000000]   Intel GenuineIntel
[    0.000000]   AMD AuthenticAMD
[    0.000000]   Hygon HygonGenuine
[    0.000000]   Centaur CentaurHauls
[    0.000000]   zhaoxin   Shanghai  


[    0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x008: 'MPX bounds registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x010: 'MPX CSR'

[    0.000000] x86/fpu: xstate_offset[2]:  576, xstate_sizes[2]:  256
[    0.000000] x86/fpu: xstate_offset[3]:  832, xstate_sizes[3]:   64
[    0.000000] x86/fpu: xstate_offset[4]:  896, xstate_sizes[4]:   64
[    0.000000] x86/fpu: Enabled xstate features 0x1f, context size is 960 bytes, using 'compacted' format.

[    0.000000] BIOS-provided physical RAM map:
[    0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009c7ff] usable
[    0.000000] BIOS-e820: [mem 0x000000000009c800-0x000000000009ffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000000e0000-0x00000000000fffff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000000100000-0x0000000072b5efff] usable
[    0.000000] BIOS-e820: [mem 0x0000000072b5f000-0x0000000072b5ffff] ACPI NVS
[    0.000000] BIOS-e820: [mem 0x0000000072b60000-0x000000007a57dfff] reserved
[    0.000000] BIOS-e820: [mem 0x000000007a57e000-0x000000007a5bcfff] ACPI data
[    0.000000] BIOS-e820: [mem 0x000000007a5bd000-0x000000007aef9fff] ACPI NVS
[    0.000000] BIOS-e820: [mem 0x000000007aefa000-0x000000007b4fefff] reserved
[    0.000000] BIOS-e820: [mem 0x000000007b500000-0x000000007b5fffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000e0000000-0x00000000efffffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fe000000-0x00000000fe010fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fec00000-0x00000000fec00fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fee00000-0x00000000fee00fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000ff000000-0x00000000ffffffff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000100000000-0x000000027f7fffff] usable

6) Este protejat acest sistem de atacurile prin stiva ?
NX = non executable stack ?

[    0.000000] NX (Execute Disable) protection: active

[    0.000000] SMBIOS 2.8 present.

7) Care este modelul computerului ?

[    0.000000] DMI: Dell Inc. Inspiron 5567/02YHJP, BIOS 1.2.6 07/09/2018

[    0.000000] tsc: Detected 2700.000 MHz processor
[    0.002262] tsc: Detected 2699.909 MHz TSC

[    0.002262] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
[    0.002263] e820: remove [mem 0x000a0000-0x000fffff] usable
[    0.002269] last_pfn = 0x27f800 max_arch_pfn = 0x400000000
[    0.002273] MTRR default type: write-back
[    0.002274] MTRR fixed ranges enabled:
[    0.002275]   00000-9FFFF write-back
[    0.002276]   A0000-BFFFF uncachable
[    0.002276]   C0000-FFFFF write-protect
[    0.002277] MTRR variable ranges enabled:
[    0.002279]   0 base 0080000000 mask 7F80000000 uncachable
[    0.002280]   1 base 007E000000 mask 7FFE000000 uncachable
[    0.002280]   2 base 007D000000 mask 7FFF000000 uncachable
[    0.002281]   3 disabled
[    0.002281]   4 disabled
[    0.002282]   5 disabled
[    0.002282]   6 disabled
[    0.002283]   7 disabled
[    0.002283]   8 disabled
[    0.002284]   9 disabled

[    0.002812] x86/PAT: Configuration [0-7]: WB  WC  UC- UC  WB  WP  UC- WT  
[    0.003015] last_pfn = 0x72b5f max_arch_pfn = 0x400000000

8) Este acest procesor multi-core ?
Adica cu Simetrical Multi Processing ?

[    0.011421] found SMP MP-table at [mem 0x000fce00-0x000fce0f]

[    0.011489] check: Scanning 1 areas for low memory corruption
[    0.011493] Using GB pages for direct mapping


9) Foloseste acest sistem un RAM DISK ?

[    0.011761] RAMDISK: [mem 0x3320d000-0x358fdfff]

[    0.011776] ACPI: Early table checksum verification disabled

[    0.011864] ACPI: Local APIC address 0xfee00000
[    0.012057] No NUMA configuration found
[    0.012058] Faking a node at [mem 0x0000000000000000-0x000000027f7fffff]
[    0.012066] NODE_DATA(0) allocated [mem 0x27f7d5000-0x27f7fffff]


10) foloseste acest computer DMA  ?

[    0.012254] Zone ranges:
[    0.012255]   DMA      [mem 0x0000000000001000-0x0000000000ffffff]
[    0.012256]   DMA32    [mem 0x0000000001000000-0x00000000ffffffff]
[    0.012257]   Normal   [mem 0x0000000100000000-0x000000027f7fffff]
[    0.012258]   Device   empty
[    0.012259] Movable zone start for each node
[    0.012262] Early memory node ranges
[    0.012263]   node   0: [mem 0x0000000000001000-0x000000000009bfff]
[    0.012264]   node   0: [mem 0x0000000000100000-0x0000000072b5efff]
[    0.012265]   node   0: [mem 0x0000000100000000-0x000000027f7fffff]
[    0.012436] Zeroed struct page in unavailable ranges: 23814 pages
[    0.012437] Initmem setup node 0 [mem 0x0000000000001000-0x000000027f7fffff]
[    0.012438] On node 0 totalpages: 2040570
[    0.012439]   DMA zone: 64 pages used for memmap
[    0.012440]   DMA zone: 21 pages reserved
[    0.012441]   DMA zone: 3995 pages, LIFO batch:0
[    0.012490]   DMA32 zone: 7278 pages used for memmap
[    0.012491]   DMA32 zone: 465759 pages, LIFO batch:63
[    0.021116]   Normal zone: 24544 pages used for memmap
[    0.021117]   Normal zone: 1570816 pages, LIFO batch:63


11) Am si cip video de la Intel pentru a rula grafica cu consum redus ?

[    0.040053] Reserving Intel graphics memory at [mem 0x7d800000-0x7f7fffff]

I s-a alocat memorie !

[    0.040310] ACPI: PM-Timer IO Port: 0x1808
[    0.040312] ACPI: Local APIC address 0xfee00000
[    0.040318] ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
[    0.040318] ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1])
[    0.040319] ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1])
[    0.040320] ACPI: LAPIC_NMI (acpi_id[0x04] high edge lint[0x1])
[    0.040352] IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-119
[    0.040354] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.040355] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.040356] ACPI: IRQ0 used by override.
[    0.040357] ACPI: IRQ9 used by override.
[    0.040359] Using ACPI (MADT) for SMP configuration information
[    0.040360] ACPI: HPET id: 0x8086a701 base: 0xfed00000
[    0.040363] TSC deadline timer available

12) Cate procesoare/nuclee am la dispozitie ?

[    0.040364] smpboot: Allowing 4 CPUs, 0 hotplug CPUs



13) Are sistemul magistrala PCI ?

[    0.040392] [mem 0x7f800000-0xdfffffff] available for PCI devices

14) Kernelul ruleaza pe hardware-ul de baza ?

[    0.040392] Booting paravirtualized kernel on bare hardware

paravirtualized = ?


15) Care este linia de comanda a nucleului ?
 
[    0.040599] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-5.4.0-48-generic root=UUID=bfa8825e-c408-4084-a919-51ff18e208c1 ro quiet splash vt.handoff=1

[    0.041193] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, linear)

16) Cum se numesc nodurile din structura (arborescenta) a sistemului de fisiere ?

[    0.041462] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, linear)
Fine tunning: tune2fs ...

[    0.041509] mem auto-init: stack:off, heap alloc:on, heap free:off
[    0.045963] Calgary: detecting Calgary via BIOS EBDA area
[    0.045965] Calgary: Unable to locate Rio Grande table in EBDA – bailing!

17) Cat de mare este memoria sistemului ?

[    0.072143] Memory: 7881176K/8162280K available (14339K kernel code, 2379K

18) Cata memorie ocupa primul proces, numit init ?

 rwdata, 4928K rodata, 2704K init, 5020K bss, 281104K reserved, 0K cma-reserved)

[    0.072149] random: get_random_u64 called from __kmem_cache_create+0x41/0x550 with crng_init=0
[    0.072287] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1

19) Sunt utilizatorii separati de spatiul nucleului ?

[    0.072302] Kernel/User page tables isolation: enabled

[    0.072315] ftrace: allocating 44229 entries in 173 pages
[    0.091220] rcu: Hierarchical RCU implementation.
[    0.091222] rcu:     RCU restricting CPUs from NR_CPUS=8192 to nr_cpu_ids=4.
[    0.091223]     Tasks RCU enabled.
[    0.091224] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies.
[    0.091224] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
[    0.094076] NR_IRQS: 524544, nr_irqs: 1024, preallocated irqs: 16
[    0.094633] random: crng done (trusting CPU's manufacturer)

20) Avem un defect hardware sau un malware care transmite cereri de intrerupere cu nr 7 ?

[    0.094677] spurious 8259A interrupt: IRQ7.

[    0.094696] vt handoff: transparent VT on vt#1
[    0.094704] Console: colour dummy device 80x25
[    0.094707] printk: console [tty0] enabled
[    0.094727] ACPI: Core revision 20190816
[    0.095024] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635855245 ns
[    0.095138] APIC: Switch to symmetric I/O mode setup
[    0.095140] DMAR: Host address width 39
[    0.095141] DMAR: DRHD base: 0x000000fed90000 flags: 0x0
[    0.095146] DMAR: dmar0: reg_base_addr fed90000 ver 1:0 cap 1c0000c40660462 ecap 19e2ff0505e
[    0.095147] DMAR: DRHD base: 0x000000fed91000 flags: 0x1
[    0.095151] DMAR: dmar1: reg_base_addr fed91000 ver 1:0 cap d2008c40660462 ecap f050da
[    0.095152] DMAR: RMRR base: 0x0000007a2cf000 end: 0x0000007a2eefff
[    0.095152] DMAR: RMRR base: 0x0000007d000000 end: 0x0000007f7fffff
[    0.095153] DMAR: ANDD device: 1 name: \_SB.PCI0.I2C0
[    0.095154] DMAR: ANDD device: 2 name: \_SB.PCI0.I2C1
[    0.095155] DMAR-IR: IOAPIC id 2 under DRHD base  0xfed91000 IOMMU 1
[    0.095156] DMAR-IR: HPET id 0 under DRHD base 0xfed91000
[    0.095157] DMAR-IR: Queued invalidation will be enabled to support x2apic and Intr-remapping.
[    0.096824] DMAR-IR: Enabled IRQ remapping in x2apic mode
[    0.096825] x2apic enabled
[    0.096838] Switched APIC routing to cluster x2apic.
[    0.100855] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[    0.119177] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x26eae8729ef, max_idle_ns: 440795235156 ns

21) Care este puterea de calcul a sistemului in Bogo-Mega-instructiuni / sec ?

[    0.119182] Calibrating delay loop (skipped), value calculated using timer frequency.. 5399.81 BogoMIPS (lpj=10799636)

[    0.119184] pid_max: default: 32768 minimum: 301
[    0.119221] LSM: Security Framework initializing
[    0.119231] Yama: becoming mindful.
[    0.119258] AppArmor: AppArmor initialized
[    0.119321] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, linear)
[    0.119339] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, linear)
[    0.119354] *** VALIDATE tmpfs ***
[    0.119497] *** VALIDATE proc ***
[    0.119544] *** VALIDATE cgroup1 ***
[    0.119545] *** VALIDATE cgroup2 ***
[    0.119619] mce: CPU0: Thermal monitoring enabled (TM1)
[    0.119635] process: using mwait in idle threads
[    0.119638] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8
[    0.119638] Last level dTLB entries: 4KB 64, 2MB 0, 4MB 0, 1GB 4

22) Include acest sistem protectii la Spectre V1 si Spectre V2 ?

[    0.119641] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
[    0.119642] Spectre V2 : Mitigation: Full generic retpoline
[    0.119643] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch
[    0.119643] Spectre V2 : Enabling Restricted Speculation for firmware calls
[    0.119644] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier
[    0.119645] Spectre V2 : User space: Mitigation: STIBP via seccomp and prctl
[    0.119646] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl and seccomp
[    0.119652] SRBDS: Mitigation: Microcode
[    0.119653] MDS: Mitigation: Clear CPU buffers
[    0.119922] Freeing SMP alternatives memory: 40K

23) Tipul de procesor ?

[    0.123265] smpboot: CPU0: Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz (family: 0x6, model: 0x8e, stepping: 0x9)

[    0.123360] mce: [Hardware Error]: Machine check events logged
[    0.123362] mce: [Hardware Error]: CPU 0: Machine Check: 0 Bank 6: ee2000000040110a
[    0.123364] mce: [Hardware Error]: TSC 0 ADDR fef1ce80 MISC 43880014086
[    0.123367] mce: [Hardware Error]: PROCESSOR 0:806e9 TIME 1602757724 SOCKET 0 APIC 0 microcode d6
[    0.123368] mce: [Hardware Error]: Machine check events logged
[    0.123369] mce: [Hardware Error]: CPU 0: Machine Check: 0 Bank 7: ee2000000040110a
[    0.123370] mce: [Hardware Error]: TSC 0 ADDR fef1ce40 MISC 7880014086
[    0.123372] mce: [Hardware Error]: PROCESSOR 0:806e9 TIME 1602757724 SOCKET 0 APIC 0 microcode d6
[    0.123424] Performance Events: PEBS fmt3+, Skylake events, 32-deep LBR, full-width counters, Intel PMU driver.
[    0.123429] ... version:                4
[    0.123429] ... bit width:              48
[    0.123430] ... generic registers:      4
[    0.123430] ... value mask:             0000ffffffffffff
[    0.123431] ... max period:             00007fffffffffff
[    0.123431] ... fixed-purpose events:   3
[    0.123432] ... event mask:             000000070000000f
[    0.123471] rcu: Hierarchical SRCU implementation.
[    0.124450] NMI watchdog: Enabled. Permanently consumes one hw-PMU counter.

24) Porneste acest sistem in mod multiprocesor ?

[    0.124512] smp: Bringing up secondary CPUs ...
[    0.124595] x86: Booting SMP configuration:
[    0.124595] .... node  #0, CPUs:      #1 #2
[    0.127707] MDS CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html for more details.
[    0.127707]  #3
[    0.127707] smp: Brought up 1 node, 4 CPUs
[    0.127707] smpboot: Max logical packages: 1

25) Daca ar fi un procesor single core, ce frecventa ar trebui sa aiba ?
Echivalentul unui procesor de 10,8 GHz.

[    0.127707] smpboot: Total of 4 processors activated (21599.27 BogoMIPS)
[    0.128901] devtmpfs: initialized
[    0.128901] x86/mm: Memory block size: 128MB



[    0.259001] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 *10 11 12 14 15)
[    0.259086] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 *10 11 12 14 15)
[    0.259169] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 10 *11 12 14 15)
[    0.259249] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 10 *11 12 14 15)
[    0.259331] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 10 *11 12 14 15)
[    0.259414] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 10 *11 12 14 15)
[    0.259496] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 10 *11 12 14 15)
[    0.259578] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 10 *11 12 14 15)
[    0.261652] ACPI: EC: interrupt unblocked
[    0.261652] ACPI: EC: event unblocked

[    0.261657] ACPI: \_SB_.PCI0.LPCB.ECDV: GPE=0x45, EC_CMD/EC_SC=0x934, EC_DATA=0x930
[    0.261657] ACPI: \_SB_.PCI0.LPCB.ECDV: Boot DSDT EC used to handle transactions and events
[    0.261657] iommu: Default domain type: Translated
[    0.261657] SCSI subsystem initialized
[    0.261657] libata version 3.00 loaded.

26) Ce numar si pe ce magistrala are VGA-ul de la pornire ?

[    0.261657] pci 0000:00:02.0: vgaarb: setting as boot VGA device
[    0.261657] pci 0000:00:02.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none
[    0.261657] pci 0000:00:02.0: vgaarb: bridge control possible
[    0.261657] vgaarb: loaded




27) Pot folosi sisteme de fisiere (aka stick-uri, harduri) accesibile prin Usb ?
Le intercepteaza ACPI ?

[    0.261657] ACPI: bus type USB registered
[    0.261657] usbcore: registered new interface driver usbfs
[    0.261657] usbcore: registered new interface driver hub
[    0.261657] usbcore: registered new device driver usb
[    0.261657] pps_core: LinuxPPS API ver. 1 registered
[    0.261657] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.261657] PTP clock support registered
[    0.261657] EDAC MC: Ver: 3.0.0
[    0.263223] PCI: Using ACPI for IRQ routing
[    0.293366] PCI: pci_cache_line_size set to 64 bytes
[    0.293763] e820: reserve RAM buffer [mem 0x0009c800-0x0009ffff]
[    0.293765] e820: reserve RAM buffer [mem 0x72b5f000-0x73ffffff]
[    0.293766] e820: reserve RAM buffer [mem 0x27f800000-0x27fffffff]

[    0.293862] NetLabel: Initializing
[    0.293863] NetLabel:  domain hash size = 128
[    0.293863] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
[    0.293879] NetLabel:  unlabeled traffic allowed by default

[    0.293891] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0, 0, 0, 0, 0, 0
[    0.293891] hpet0: 8 comparators, 64-bit 24.000000 MHz counter
[    0.295198] clocksource: Switched to clocksource tsc-early
[    0.306642] *** VALIDATE bpf ***
[    0.306708] VFS: Disk quotas dquot_6.6.0
[    0.306723] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    0.306746] *** VALIDATE ramfs ***
[    0.306748] *** VALIDATE hugetlbfs ***

28) Este activata protectia AppArmour la nivel de sistem de fisiere ?

[    0.306834] AppArmor: AppArmor Filesystem Enabled
[    0.306861] pnp: PnP ACPI init
[    0.307209] system 00:00: [io  0x0680-0x069f] has been reserved
[    0.307211] system 00:00: [io  0xffff] has been reserved
[    0.307212] system 00:00: [io  0xffff] has been reserved
[    0.307213] system 00:00: [io  0xffff] has been reserved
[    0.307214] system 00:00: [io  0x1800-0x18fe] has been reserved
[    0.307215] system 00:00: [io  0x164e-0x164f] has been reserved
[    0.307220] system 00:00: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.307343] pnp 00:01: Plug and Play ACPI device, IDs PNP0b00 (active)
[    0.307385] system 00:02: [io  0x1854-0x1857] has been reserved
[    0.307388] system 00:02: Plug and Play ACPI device, IDs INT3f0d PNP0c02 (active)
[    0.307840] pnp 00:03: Plug and Play ACPI device, IDs PNP0303 (active)
[    0.307859] pnp 00:04: Plug and Play ACPI device, IDs DLL0767 PNP0f13 (active)
[    0.308178] system 00:05: [mem 0xfed10000-0xfed17fff] has been reserved
[    0.308180] system 00:05: [mem 0xfed18000-0xfed18fff] has been reserved
[    0.308181] system 00:05: [mem 0xfed19000-0xfed19fff] has been reserved
[    0.308182] system 00:05: [mem 0xe0000000-0xefffffff] has been reserved
[    0.308183] system 00:05: [mem 0xfed20000-0xfed3ffff] has been reserved
[    0.308185] system 00:05: [mem 0xfed90000-0xfed93fff] could not be reserved
[    0.308186] system 00:05: [mem 0xfed45000-0xfed8ffff] has been reserved
[    0.308187] system 00:05: [mem 0xff000000-0xffffffff] has been reserved
[    0.308188] system 00:05: [mem 0xfee00000-0xfeefffff] could not be reserved
[    0.308190] system 00:05: [mem 0xdffe0000-0xdfffffff] has been reserved
[    0.308193] system 00:05: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.308241] system 00:06: [mem 0xfd000000-0xfdabffff] has been reserved
[    0.308243] system 00:06: [mem 0xfdad0000-0xfdadffff] has been reserved
[    0.308244] system 00:06: [mem 0xfdb00000-0xfdffffff] has been reserved
[    0.308245] system 00:06: [mem 0xfe000000-0xfe01ffff] could not be reserved
[    0.308246] system 00:06: [mem 0xfe036000-0xfe03bfff] has been reserved
[    0.308247] system 00:06: [mem 0xfe03d000-0xfe3fffff] has been reserved
[    0.308248] system 00:06: [mem 0xfe410000-0xfe7fffff] has been reserved
[    0.308251] system 00:06: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.308625] system 00:07: [io  0xff00-0xfffe] has been reserved
[    0.308628] system 00:07: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.310047] system 00:08: [mem 0xfe029000-0xfe029fff] has been reserved
[    0.310049] system 00:08: [mem 0xfe028000-0xfe028fff] has been reserved
[    0.310052] system 00:08: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.313911] pnp: PnP ACPI: found 9 devices
[    0.315080] thermal_sys: Registered thermal governor 'fair_share'
[    0.315080] thermal_sys: Registered thermal governor 'bang_bang'
[    0.315081] thermal_sys: Registered thermal governor 'step_wise'
[    0.315082] thermal_sys: Registered thermal governor 'user_space'
[    0.315082] thermal_sys: Registered thermal governor 'power_allocator'
[    0.319583] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[    0.319618] pci 0000:00:1c.0: PCI bridge to [bus 01]
[    0.319626] pci 0000:00:1c.0:   bridge window [io  0xe000-0xefff]
[    0.319629] pci 0000:00:1c.0:   bridge window [mem 0xdf200000-0xdf2fffff]
[    0.319632] pci 0000:00:1c.0:   bridge window [mem 0xc0000000-0xd01fffff 64bit pref]
[    0.319636] pci 0000:00:1c.4: PCI bridge to [bus 02]
[    0.319640] pci 0000:00:1c.4:   bridge window [mem 0xdf100000-0xdf1fffff]
[    0.319646] pci 0000:00:1c.5: PCI bridge to [bus 03]
[    0.319647] pci 0000:00:1c.5:   bridge window [io  0xd000-0xdfff]
[    0.319651] pci 0000:00:1c.5:   bridge window [mem 0xdf000000-0xdf0fffff]
[    0.319653] pci 0000:00:1c.5:   bridge window [mem 0xd0300000-0xd03fffff 64bit pref]
[    0.319658] pci_bus 0000:00: resource 4 [io  0x0000-0x0cf7 window]
[    0.319660] pci_bus 0000:00: resource 5 [io  0x0d00-0xffff window]
[    0.319661] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window]
[    0.319662] pci_bus 0000:00: resource 7 [mem 0x7f800000-0xdfffffff window]
[    0.319663] pci_bus 0000:00: resource 8 [mem 0xfd000000-0xfe7fffff window]
[    0.319664] pci_bus 0000:01: resource 0 [io  0xe000-0xefff]
[    0.319665] pci_bus 0000:01: resource 1 [mem 0xdf200000-0xdf2fffff]
[    0.319665] pci_bus 0000:01: resource 2 [mem 0xc0000000-0xd01fffff 64bit pref]
[    0.319666] pci_bus 0000:02: resource 1 [mem 0xdf100000-0xdf1fffff]
[    0.319667] pci_bus 0000:03: resource 0 [io  0xd000-0xdfff]
[    0.319668] pci_bus 0000:03: resource 1 [mem 0xdf000000-0xdf0fffff]
[    0.319669] pci_bus 0000:03: resource 2 [mem 0xd0300000-0xd03fffff 64bit pref]
[    0.319857] NET: Registered protocol family 2
[    0.319996] tcp_listen_portaddr_hash hash table entries: 4096 (order: 4, 65536 bytes, linear)
[    0.320036] TCP established hash table entries: 65536 (order: 7, 524288 bytes, linear)
[    0.320161] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes, linear)
[    0.320250] TCP: Hash tables configured (established 65536 bind 65536)
[    0.320280] UDP hash table entries: 4096 (order: 5, 131072 bytes, linear)
[    0.320302] UDP-Lite hash table entries: 4096 (order: 5, 131072 bytes, linear)
[    0.320352] NET: Registered protocol family 1
[    0.320357] NET: Registered protocol family 44
[    0.320370] pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
[    0.339413] pci 0000:00:14.0: quirk_usb_early_handoff+0x0/0x6b0 took 18586 usecs
[    0.339477] pci 0000:01:00.0: disabling ATS
[    0.339628] PCI: CLS 0 bytes, default 64
[    0.339667] Trying to unpack rootfs image as initramfs...
[    0.944723] Freeing initrd memory: 39876K
[    0.944772] DMAR: ACPI device "device:70" under DMAR at fed91000 as 00:15.0
[    0.944775] DMAR: ACPI device "device:71" under DMAR at fed91000 as 00:15.1
[    0.963237] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[    0.963238] software IO TLB: mapped [mem 0x6eb5f000-0x72b5f000] (64MB)
[    0.963445] check: Scanning for low memory corruption every 60 seconds

29) Foloseste acest sistem key de criptare, (certificate semnate criptografic) ?

[    0.963833] Initialise system trusted keyrings
[    0.963858] Key type blacklist registered
[    0.963882] workingset: timestamp_bits=36 max_order=21 bucket_order=0
[    0.965106] zbud: loaded
[    0.965453] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.965599] fuse: init (API version 7.31)
[    0.965612] *** VALIDATE fuse ***
[    0.965614] *** VALIDATE fuse ***
[    0.965695] Platform Keyring initialized
[    0.969070] Key type asymmetric registered
[    0.969071] Asymmetric key parser 'x509' registered
[    0.969081] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 244)
[    0.969117] io scheduler mq-deadline registered
[    0.969474] pcieport 0000:00:1c.0: PME: Signaling with IRQ 122
[    0.969543] pcieport 0000:00:1c.0: AER: enabled with IRQ 122
[    0.969808] pcieport 0000:00:1c.4: PME: Signaling with IRQ 123
[    0.969864] pcieport 0000:00:1c.4: AER: enabled with IRQ 123
[    0.970099] pcieport 0000:00:1c.5: PME: Signaling with IRQ 124
[    0.970157] pcieport 0000:00:1c.5: AER: enabled with IRQ 124
[    0.970228] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
[    0.970281] vesafb: mode is 1920x1080x32, linelength=7680, pages=0
[    0.970281] vesafb: scrolling: redraw
[    0.970282] vesafb: Truecolor: size=8:8:8:8, shift=24:16:8:0
[    0.970294] vesafb: framebuffer at 0xb0000000, mapped to 0x00000000e7f980b9, using 8128k, total 8128k
[    0.970331] fbcon: Deferring console take-over
[    0.970331] fb0: VESA VGA frame buffer device
[    0.970344] intel_idle: MWAIT substates: 0x11142120
[    0.970345] intel_idle: v0.4.1 model 0x8E
[    0.970560] intel_idle: lapic_timer_reliable_states 0xffffffff

30) Ce “intrerupatoare” /senzori foloseste sistemul ACPI ?

[    0.972683] ACPI: AC Adapter [AC] (on-line)
[    0.972752] input: Lid Switch as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input0
[    0.972781] ACPI: Lid Switch [LID0]
[    0.972807] input: Power Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input1
[    0.972828] ACPI: Power Button [PBTN]
[    0.972852] input: Sleep Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input2
[    0.972864] ACPI: Sleep Button [SBTN]
[    0.972892] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input3
[    0.972910] ACPI: Power Button [PWRF]
[    0.975027] thermal LNXTHERM:00: registered as thermal_zone0
[    0.975028] ACPI: Thermal Zone [THM] (25 C)

30) Am o interfata seriala, la ce este ea buna ?

[    0.975230] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled
[    0.977901] Linux agpgart interface v0.103
[    0.979205] tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does not cover the entire command/response buffer. [mem 0xfed40000-0xfed4087f flags 0x200] vs fed40080 f80
[    0.979215] tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does not cover the entire command/response buffer. [mem 0xfed40000-0xfed4087f flags 0x200] vs fed40080 f80
[    1.002056] battery: ACPI: Battery Slot [BAT0] (battery present)
[    1.041578] loop: module loaded
[    1.041765] libphy: Fixed MDIO Bus: probed
[    1.041765] tun: Universal TUN/TAP device driver, 1.6
[    1.041810] PPP generic driver version 2.4.2
[    1.041878] VFIO - User Level meta-driver version: 0.3

31) Tipuri de componente / generatii de USB-uri ?

[    1.041965] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.041967] ehci-pci: EHCI PCI platform driver
[    1.041978] ehci-platform: EHCI generic platform driver
[    1.041991] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    1.041992] ohci-pci: OHCI PCI platform driver
[    1.041999] ohci-platform: OHCI generic platform driver
[    1.042005] uhci_hcd: USB Universal Host Controller Interface driver

[    1.042239] xhci_hcd 0000:00:14.0: xHCI Host Controller
[    1.042244] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 1
[    1.043327] xhci_hcd 0000:00:14.0: hcc params 0x200077c1 hci version 0x100 quirks 0x0000000081109810

32) Ce informatii transmite un dispozitiv USB ?

[    1.043561] xhci_hcd 0000:00:14.0: cache line size of 64 is not supported
[    1.043750] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.04
[    1.043752] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1


[    1.043753] usb usb1: Product: xHCI Host Controller
[    1.043754] usb usb1: Manufacturer: Linux 5.4.0-48-generic xhci-hcd
[    1.043755] usb usb1: SerialNumber: 0000:00:14.0
[    1.043857] hub 1-0:1.0: USB hub found
[    1.043877] hub 1-0:1.0: 12 ports detected
[    1.045228] xhci_hcd 0000:00:14.0: xHCI Host Controller
[    1.045231] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 2
[    1.045233] xhci_hcd 0000:00:14.0: Host supports USB 3.0 SuperSpeed
[    1.045271] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.04
[    1.045272] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.045273] usb usb2: Product: xHCI Host Controller
[    1.045274] usb usb2: Manufacturer: Linux 5.4.0-48-generic xhci-hcd
[    1.045275] usb usb2: SerialNumber: 0000:00:14.0
[    1.045367] hub 2-0:1.0: USB hub found
[    1.045387] hub 2-0:1.0: 6 ports detected

33) Mouse-ul este ca la primele IBM-PC-uri ?
[    1.046094] i8042: PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12

Ne oprim la:
KBD si AUX

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