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SubjectRe: Clang patch stacks for LTS kernels (v4.4 and v4.9) and status update
On Mon, May 7, 2018 at 7:49 PM, Matthias Kaehlcke <mka@chromium.org> wrote:

[...]

>> Hi Matthias,
>>
>> again you helped me a lot.
>>
>> I recalled that I had success in the early days of llvmlinux with...
>>
>> CONFIG_PARAVIRT=n
>>
>> ...as suggested by Steve Rostedt.
>>
>> This needed some more hackish kconfig kungfu these days - patches attached.
>>
>> In the end I could boot into a 4.14.37-1-iniza-llvmlinux kernel
>> (kernel-config and dmesg-log attached).
>>
>> Concerning your analysis...
>>
>> Is this a clang-bug?
>> Or can this be solved in the linux-kernel code?
>> What are your suggestion?
>> And can you help on getting this fixed with the help of your Chromium
>> team and/or bring it to the right persons?
>
> Apparently stack-protector code is clobbering RCX, however the
> paravirt code expects the register to be preserved:
>
> struct pv_irq_ops {
> /*
> * ...
> * NOTE: These functions callers expect the callee to preserve
> * more registers than the standard C calling convention.
> */
> struct paravirt_callee_save save_fl;
>
> We think the solution is to mark native_save_fl with
> '__nostackprotector', however this requires adding support for
> such an attribute to clang. Our compiler team is working on this.
>

[ CC Steven Rostedt ]

Hi Matthias,

as a confirmation I could boot into a paravirtualized llvm-kernel
v4.14.40 with CC_STACKPROTECTOR_NONE=y.

$ ./scripts/diffconfig /boot/config-4.14.37-1-iniza-llvmlinux
/boot/config-4.14.40-1-iniza-llvmlinux | grep CC_STACKPROTECTOR
CC_STACKPROTECTOR y -> n
CC_STACKPROTECTOR_NONE n -> y
CC_STACKPROTECTOR_STRONG y -> n

$ grep -i paravirt qemu-log_4.14.40-1-iniza-llvmlinux.txt
[ 0.000000] Booting paravirtualized kernel on KVM

Both kernel-configs, the qemu-script and qemu-logs are attached.

For people following I can send you the used patch-series (see below).

Thanks.

Regards,
- Sedat -

P.S.: Patchset contains patchstack from llvm_v4.14_ext by Matthias &
coworkers with reverted stuff (mostly kbuild) being in
linux-stable-4.14.y plus some more patches (xen VLAIS, kbuild HOSTCC,
etc.)

$ git log --oneline v4.14.40..
590207f1e63c (HEAD -> 4.14.40-1-iniza-llvmlinux) Merge branch
'for-4.14/x86-xen-clang-fixes' into 4.14.40-1-iniza-llvmlinux
36a1c0f031f4 Merge branch 'for-4.14/kbuild-clang-fixes' into
4.14.40-1-iniza-llvmlinux
c3afa4921927 Merge branch
'for-llvm_v4.14_ext/revert-clang-kbuild-fixes' into
4.14.40-1-iniza-llvmlinux
32f3dd55b9c8 (for-4.14/x86-xen-clang-fixes) x86: xen: remove the use of VLAIS
6b78d2ecfae1 (for-4.14/kbuild-clang-fixes) kbuild: clang: remove
crufty HOSTCFLAGS
53da106d34a3 (for-llvm_v4.14_ext/revert-clang-kbuild-fixes) Revert
"UPSTREAM: kbuild: fix linker feature test macros when cross compiling
with Clang"
6136ef7f8eaf Revert "BACKPORT: kbuild: Set KBUILD_CFLAGS before incl.
arch Makefile"
73a00f4cfd62 Revert "BACKPORT: kbuild: disable clang's default use of
-fmerge-all-constants"
6d945349c761 Revert "CLANG4: crypto: arm64/aes-ce: Explicitly pass
through assembler options"
dc09abad371e Revert "CLANG4: kbuild: Add -meabi gnu to the clang parameters"
b4d76971bd02 Revert "CLANG4: arm64: prefetch: Use
__builtin_arm_prefetch() for clang"
c779654513fd Revert "CLANG4: Disable lkdtm when ftrace is enabled"
c52593cc5e62 Revert "CLANG4: futex: don't optimize
futex_detect_cmpxchg() on ARM64"
a7074de141fb Revert "CLANG3: core: clang: work around x86 regparm /
intrinsics bug"
c03a7ac96a18 (llvm_v4.14_ext) UPSTREAM: sched/sysctl: Fix attributes
of some extern declarations
fc0f14867820 UPSTREAM: x86/boot: Disable Clang warnings about GNU extensions
9a7e28aa6b4a HACK: arm64: Mark CONFIG_CPU_BIG_ENDIAN as broken
a0092455e775 HACK: arm64: Mark CONFIG_ARM64_LSE_ATOMICS as broken
9de3cf0e0462 HACK: media: camss: Mark as broken
82951cf7d32c HACK: kasan: Mark as broken
2732c83a4fa4 HACK: exofs: Mark as broken
6a3124b1d1f8 UPSTREAM: serial: sh-sci: Fix init data attribute for
struct 'port_cfg'
b3b270e93807 UPSTREAM: bcache: Avoid nested function definition
6098eb444464 UPSTREAM: nfp: don't depend on compiler constant propagation
e95e3974644d UPSTREAM: md: raid10: remove VLAIS
69e44656ae43 CLANG3: core: clang: work around x86 regparm / intrinsics bug
222b88977a00 CLANG4: futex: don't optimize futex_detect_cmpxchg() on ARM64
cdfcf1e45537 CLANG4: Disable lkdtm when ftrace is enabled
26f14c9225a6 CLANG4: arm64: prefetch: Use __builtin_arm_prefetch() for clang
0385a18e9995 CLANG4: kbuild: Add -meabi gnu to the clang parameters
68dab143c9b4 CLANG4: crypto: arm64/aes-ce: Explicitly pass through
assembler options
9af5ddf981ed (llvm_v4.14) BACKPORT: kbuild: disable clang's default
use of -fmerge-all-constants
b84e202d9cd6 UPSTREAM: crypto: arm64/aes-ce-cipher - move assembler
code to .S file
f24088a3842c BACKPORT: kbuild: Set KBUILD_CFLAGS before incl. arch Makefile
d4dfe384346d UPSTREAM: kbuild: fix linker feature test macros when
cross compiling with Clang
$ cat scripts/run_qemu.sh
KPATH=$(pwd)

sudo qemu-system-x86_64 -enable-kvm -M pc -kernel $KPATH/bzImage -initrd $KPATH/initrd.img -m 512 -net none -serial stdio -append "root=/dev/ram0 console=ttyS0 hung_task_panic=1 earlyprintk=ttyS0,115200"

sdi@iniza:~/src/linux-kernel/important-files$ ./scripts/run_qemu.sh
Probing EDD (edd=off to disable)... ok
[ 0.000000] Linux version 4.14.40-1-iniza-llvmlinux (sedat.dilek@gmail.com@iniza) (clang version 7.0.0- (trunk)) #1 SMP Fri May 11 13:17:43 CEST 2018
[ 0.000000] Command line: root=/dev/ram0 console=ttyS0 hung_task_panic=1 earlyprintk=ttyS0,115200
[ 0.000000] x86/fpu: x87 FPU will use FXSAVE
[ 0.000000] e820: BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
[ 0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
[ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000001ffdffff] usable
[ 0.000000] BIOS-e820: [mem 0x000000001ffe0000-0x000000001fffffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved
[ 0.000000] bootconsole [earlyser0] enabled
[ 0.000000] NX (Execute Disable) protection: active
[ 0.000000] SMBIOS 2.8 present.
[ 0.000000] DMI: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.1-1 04/01/2014
[ 0.000000] Hypervisor detected: KVM
[ 0.000000] tsc: Fast TSC calibration failed
[ 0.000000] tsc: Unable to calibrate against PIT
[ 0.000000] tsc: No reference (HPET/PMTIMER) available
[ 0.000000] e820: last_pfn = 0x1ffe0 max_arch_pfn = 0x400000000
[ 0.000000] x86/PAT: PAT not supported by CPU.
[ 0.000000] x86/PAT: Configuration [0-7]: WB WT UC- UC WB WT UC- UC
Memory KASLR using RDTSC...
[ 0.000000] found SMP MP-table at [mem 0x000f5d60-0x000f5d6f] mapped at [ffffffffff200d60]
[ 0.000000] RAMDISK: [mem 0x1e658000-0x1ffdffff]
[ 0.000000] ACPI: Early table checksum verification disabled
[ 0.000000] ACPI: RSDP 0x00000000000F5B90 000014 (v00 BOCHS )
[ 0.000000] ACPI: RSDT 0x000000001FFE157C 000030 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001)
[ 0.000000] ACPI: FACP 0x000000001FFE1458 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001)
[ 0.000000] ACPI: DSDT 0x000000001FFE0040 001418 (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001)
[ 0.000000] ACPI: FACS 0x000000001FFE0000 000040
[ 0.000000] ACPI: APIC 0x000000001FFE14CC 000078 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001)
[ 0.000000] ACPI: HPET 0x000000001FFE1544 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001)
[ 0.000000] No NUMA configuration found
[ 0.000000] Faking a node at [mem 0x0000000000000000-0x000000001ffdffff]
[ 0.000000] NODE_DATA(0) allocated [mem 0x1e653000-0x1e657fff]
[ 0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00
[ 0.000000] kvm-clock: cpu 0, msr 0:1e64b001, primary cpu clock
[ 0.000000] kvm-clock: using sched offset of 1618029257 cycles
[ 0.000000] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.000000] Zone ranges:
[ 0.000000] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.000000] DMA32 [mem 0x0000000001000000-0x000000001ffdffff]
[ 0.000000] Normal empty
[ 0.000000] Device empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000001000-0x000000000009efff]
[ 0.000000] node 0: [mem 0x0000000000100000-0x000000001ffdffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x000000001ffdffff]
[ 0.000000] ACPI: PM-Timer IO Port: 0x608
[ 0.000000] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.000000] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.000000] Using ACPI (MADT) for SMP configuration information
[ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[ 0.000000] smpboot: Allowing 1 CPUs, 0 hotplug CPUs
[ 0.000000] PM: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.000000] PM: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
[ 0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000effff]
[ 0.000000] PM: Registered nosave memory: [mem 0x000f0000-0x000fffff]
[ 0.000000] e820: [mem 0x20000000-0xfeffbfff] available for PCI devices
[ 0.000000] Booting paravirtualized kernel on KVM
[ 0.000000] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns
[ 0.000000] setup_percpu: NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:1 nr_node_ids:1
[ 0.000000] percpu: Embedded 44 pages/cpu @ffff9adede400000 s141464 r8192 d30568 u2097152
[ 0.000000] KVM setup async PF for cpu 0
[ 0.000000] kvm-stealtime: cpu 0, msr 1e416180
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 128872
[ 0.000000] Policy zone: DMA32
[ 0.000000] Kernel command line: root=/dev/ram0 console=ttyS0 hung_task_panic=1 earlyprintk=ttyS0,115200
[ 0.000000] PID hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.000000] Memory: 467180K/523768K available (10252K kernel code, 1013K rwdata, 2796K rodata, 1664K init, 656K bss, 56588K reserved, 0K cma-reserved)
[ 0.000000] random: get_random_u32 called from cache_grow_begin+0x2f0/0x580 with crng_init=0
[ 0.000000] Kernel/User page tables isolation: enabled
[ 0.000000] ftrace: allocating 26204 entries in 103 pages
[ 0.004000] Hierarchical RCU implementation.
[ 0.004000] RCU restricting CPUs from NR_CPUS=512 to nr_cpu_ids=1.
[ 0.004000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[ 0.004000] NR_IRQS: 33024, nr_irqs: 256, preallocated irqs: 16
[ 0.004000] Console: colour VGA+ 80x25
[ 0.004000] console [ttyS0] enabled
[ 0.004000] console [ttyS0] enabled
[ 0.004000] bootconsole [earlyser0] disabled
[ 0.004000] bootconsole [earlyser0] disabled
[ 0.004000] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns
[ 0.004008] tsc: Detected 2904.000 MHz processor
[ 0.006072] Calibrating delay loop (skipped) preset value.. 5808.00 BogoMIPS (lpj=11616000)
[ 0.008021] pid_max: default: 32768 minimum: 301
[ 0.008776] ACPI: Core revision 20170728
[ 0.013153] ACPI: 1 ACPI AML tables successfully acquired and loaded
[ 0.014110] Security Framework initialized
[ 0.014664] Yama: becoming mindful.
[ 0.015168] AppArmor: AppArmor initialized
[ 0.017451] Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
[ 0.020237] Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)
[ 0.022279] Mount-cache hash table entries: 1024 (order: 1, 8192 bytes)
[ 0.024050] Mountpoint-cache hash table entries: 1024 (order: 1, 8192 bytes)
[ 0.028213] CPU: Physical Processor ID: 0
[ 0.028807] mce: CPU supports 10 MCE banks
[ 0.029416] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0
[ 0.030141] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0
[ 0.032026] Spectre V2 : Mitigation: Full generic retpoline
[ 0.050739] Freeing SMP alternatives memory: 32K
[ 0.054387] smpboot: Max logical packages: 1
[ 0.055302] x2apic enabled
[ 0.056009] Switched APIC routing to physical x2apic.
[ 0.058293] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[ 0.060000] APIC calibration not consistent with PM-Timer: 147ms instead of 100ms
[ 0.060000] APIC delta adjusted to PM-Timer: 6255955 (9230905)
[ 0.060000] smpboot: CPU0: Intel QEMU Virtual CPU version 2.5+ (family: 0x6, model: 0x6, stepping: 0x3)
[ 0.060000] Performance Events: PMU not available due to virtualization, using software events only.
[ 0.060087] Hierarchical SRCU implementation.
[ 0.064074] NMI watchdog: Perf event create on CPU 0 failed with -2
[ 0.064877] NMI watchdog: Perf NMI watchdog permanently disabled
[ 0.065731] smp: Bringing up secondary CPUs ...
[ 0.066342] smp: Brought up 1 node, 1 CPU
[ 0.066891] smpboot: Total of 1 processors activated (5808.00 BogoMIPS)
[ 0.068162] devtmpfs: initialized
[ 0.068679] x86/mm: Memory block size: 128MB
[ 0.069508] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.070823] futex hash table entries: 256 (order: 2, 16384 bytes)
[ 0.072035] pinctrl core: initialized pinctrl subsystem
[ 0.072915] NET: Registered protocol family 16
[ 0.074037] cpuidle: using governor ladder
[ 0.076056] cpuidle: using governor menu
[ 0.076648] ACPI: bus type PCI registered
[ 0.077185] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[ 0.080155] PCI: Using configuration type 1 for base access
[ 0.083116] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[ 0.084335] ACPI: Added _OSI(Module Device)
[ 0.084882] ACPI: Added _OSI(Processor Device)
[ 0.085458] ACPI: Added _OSI(3.0 _SCP Extensions)
[ 0.088006] ACPI: Added _OSI(Processor Aggregator Device)
[ 0.090019] ACPI: Interpreter enabled
[ 0.092048] ACPI: (supports S0 S3 S4 S5)
[ 0.092578] ACPI: Using IOAPIC for interrupt routing
[ 0.093406] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[ 0.094961] ACPI: Enabled 2 GPEs in block 00 to 0F
[ 0.100255] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[ 0.101634] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI]
[ 0.104021] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM
[ 0.104983] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge.
[ 0.107005] acpiphp: Slot [3] registered
[ 0.108042] acpiphp: Slot [4] registered
[ 0.108702] acpiphp: Slot [5] registered
[ 0.109341] acpiphp: Slot [6] registered
[ 0.109988] acpiphp: Slot [7] registered
[ 0.110648] acpiphp: Slot [8] registered
[ 0.111313] acpiphp: Slot [9] registered
[ 0.112044] acpiphp: Slot [10] registered
[ 0.112723] acpiphp: Slot [11] registered
[ 0.113396] acpiphp: Slot [12] registered
[ 0.114197] acpiphp: Slot [13] registered
[ 0.114800] acpiphp: Slot [14] registered
[ 0.115376] acpiphp: Slot [15] registered
[ 0.116053] acpiphp: Slot [16] registered
[ 0.116641] acpiphp: Slot [17] registered
[ 0.117237] acpiphp: Slot [18] registered
[ 0.119392] acpiphp: Slot [19] registered
[ 0.120077] acpiphp: Slot [20] registered
[ 0.120917] acpiphp: Slot [21] registered
[ 0.121479] acpiphp: Slot [22] registered
[ 0.122037] acpiphp: Slot [23] registered
[ 0.122600] acpiphp: Slot [24] registered
[ 0.124043] acpiphp: Slot [25] registered
[ 0.124762] acpiphp: Slot [26] registered
[ 0.125485] acpiphp: Slot [27] registered
[ 0.126211] acpiphp: Slot [28] registered
[ 0.126919] acpiphp: Slot [29] registered
[ 0.127594] acpiphp: Slot [30] registered
[ 0.128044] acpiphp: Slot [31] registered
[ 0.128716] PCI host bridge to bus 0000:00
[ 0.129367] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window]
[ 0.130306] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window]
[ 0.131417] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
[ 0.132009] pci_bus 0000:00: root bus resource [mem 0x20000000-0xfebfffff window]
[ 0.136068] pci_bus 0000:00: root bus resource [mem 0x100000000-0x17fffffff window]
[ 0.137500] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 0.143483] pci 0000:00:01.1: legacy IDE quirk: reg 0x10: [io 0x01f0-0x01f7]
[ 0.144007] pci 0000:00:01.1: legacy IDE quirk: reg 0x14: [io 0x03f6]
[ 0.145017] pci 0000:00:01.1: legacy IDE quirk: reg 0x18: [io 0x0170-0x0177]
[ 0.146107] pci 0000:00:01.1: legacy IDE quirk: reg 0x1c: [io 0x0376]
[ 0.148576] pci 0000:00:01.3: quirk: [io 0x0600-0x063f] claimed by PIIX4 ACPI
[ 0.149540] pci 0000:00:01.3: quirk: [io 0x0700-0x070f] claimed by PIIX4 SMB
[ 0.164842] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11)
[ 0.168113] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11)
[ 0.169082] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11)
[ 0.170032] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11)
[ 0.170941] ACPI: PCI Interrupt Link [LNKS] (IRQs *9)
[ 0.172324] pci 0000:00:02.0: vgaarb: setting as boot VGA device
[ 0.173248] pci 0000:00:02.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none
[ 0.174586] pci 0000:00:02.0: vgaarb: bridge control possible
[ 0.175601] vgaarb: loaded
[ 0.176237] EDAC MC: Ver: 3.0.0
[ 0.177154] PCI: Using ACPI for IRQ routing
[ 0.178416] HPET: 3 timers in total, 0 timers will be used for per-cpu timer
[ 0.180032] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
[ 0.180687] hpet0: 3 comparators, 64-bit 100.000000 MHz counter
[ 0.184076] clocksource: Switched to clocksource kvm-clock
[ 0.216875] VFS: Disk quotas dquot_6.6.0
[ 0.217445] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[ 0.218532] AppArmor: AppArmor Filesystem Enabled
[ 0.219176] pnp: PnP ACPI init
[ 0.220076] pnp: PnP ACPI: found 6 devices
[ 0.240516] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[ 0.248771] NET: Registered protocol family 2
[ 0.249886] TCP established hash table entries: 4096 (order: 3, 32768 bytes)
[ 0.250812] TCP bind hash table entries: 4096 (order: 4, 65536 bytes)
[ 0.254625] TCP: Hash tables configured (established 4096 bind 4096)
[ 0.255542] UDP hash table entries: 256 (order: 1, 8192 bytes)
[ 0.256323] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[ 0.257234] NET: Registered protocol family 1
[ 0.264837] pci 0000:00:01.0: PIIX3: Enabling Passive Release
[ 0.265571] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
[ 0.266331] pci 0000:00:01.0: Activating ISA DMA hang workarounds
[ 0.267158] pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
[ 0.268336] Unpacking initramfs...
[ 1.077013] Freeing initrd memory: 26144K
[ 1.079330] audit: initializing netlink subsys (disabled)
[ 1.082216] audit: type=2000 audit(1526038491.528:1): state=initialized audit_enabled=0 res=1
[ 1.085860] workingset: timestamp_bits=40 max_order=17 bucket_order=0
[ 1.087885] zbud: loaded
[ 1.511277] Key type asymmetric registered
[ 1.511871] Asymmetric key parser 'x509' registered
[ 1.512569] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249)
[ 1.513595] io scheduler noop registered
[ 1.514144] io scheduler deadline registered
[ 1.514758] io scheduler cfq registered (default)
[ 1.515331] io scheduler mq-deadline registered
[ 1.516422] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 1.558709] 00:05: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[ 1.560094] Linux agpgart interface v0.103
[ 1.560726] AMD IOMMUv2 driver by Joerg Roedel <jroedel@suse.de>
[ 1.561541] AMD IOMMUv2 functionality not available on this system
[ 1.562548] i8042: PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12
[ 1.564406] serio: i8042 KBD port at 0x60,0x64 irq 1
[ 1.565109] serio: i8042 AUX port at 0x60,0x64 irq 12
[ 1.565919] mousedev: PS/2 mouse device common for all mice
[ 1.567011] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input0
[ 1.578656] rtc_cmos 00:00: RTC can wake from S4
[ 1.579873] rtc_cmos 00:00: rtc core: registered rtc_cmos as rtc0
[ 1.580861] rtc_cmos 00:00: alarms up to one day, y3k, 114 bytes nvram, hpet irqs
[ 1.581899] ledtrig-cpu: registered to indicate activity on CPUs
[ 1.582964] NET: Registered protocol family 10
[ 1.587747] Segment Routing with IPv6
[ 1.588351] mip6: Mobile IPv6
[ 1.588762] NET: Registered protocol family 17
[ 1.589388] mpls_gso: MPLS GSO support
[ 1.590028] sched_clock: Marking stable (1588313034, 0)->(2204995390, -616682356)
[ 1.606956] registered taskstats version 1
[ 1.610761] zswap: loaded using pool lzo/zbud
[ 1.611537] AppArmor: AppArmor sha1 policy hashing enabled
[ 1.618639] ima: No TPM chip found, activating TPM-bypass! (rc=-19)
[ 1.619907] rtc_cmos 00:00: setting system clock to 2018-05-11 11:34:52 UTC (1526038492)
[ 1.624945] Freeing unused kernel memory: 1664K
[ 1.630762] Write protecting the kernel read-only data: 16384k
[ 1.632876] Freeing unused kernel memory: 2008K
[ 1.637422] Freeing unused kernel memory: 1300K
[ 1.652425] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[ 1.666034] x86/mm: Checking user space page tables
[ 1.682971] x86/mm: Checked W+X mappings: passed, no W+X pages found.
Loading, please wait...
starting version 238
[ 1.951696] Floppy drive(s): fd0 is 2.88M AMI BIOS
[ 1.961893] SCSI subsystem initialized
[ 1.965403] piix4_smbus 0000:00:01.3: SMBus Host Controller at 0x700, revision 0
[ 1.972834] FDC 0 is a S82078B
[ 1.977126] input: VirtualPS/2 VMware VMMouse as /devices/platform/i8042/serio1/input/input3
[ 1.984275] input: VirtualPS/2 VMware VMMouse as /devices/platform/i8042/serio1/input/input2
[ 2.033201] scsi host0: ata_piix
[ 2.037544] scsi host1: ata_piix
[ 2.039194] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc000 irq 14
[ 2.042332] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc008 irq 15
[ 2.080132] tsc: Refined TSC clocksource calibration: 2903.988 MHz
[ 2.082954] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x29dbfa58762, max_idle_ns: 440795236108 ns
[ 2.205865] ata2.00: ATAPI: QEMU DVD-ROM, 2.5+, max UDMA/100
[ 2.209113] ata2.00: configured for MWDMA2
[ 2.211541] scsi 1:0:0:0: CD-ROM QEMU QEMU DVD-ROM 2.5+ PQ: 0 ANSI: 5
[ 2.241840] sr 1:0:0:0: [sr0] scsi3-mmc drive: 4x/4x cd/rw xa/form2 tray
[ 2.246235] cdrom: Uniform CD-ROM driver Revision: 3.20
Begin: Loading essential drivers ... [ 2.512318] raid6: sse2x1 gen() 3027 MB/s
[ 2.580055] raid6: sse2x1 xor() 2613 MB/s
[ 2.648043] raid6: sse2x2 gen() 6130 MB/s
[ 2.716041] raid6: sse2x2 xor() 2857 MB/s
[ 2.792024] raid6: sse2x4 gen() 4198 MB/s
[ 2.860049] raid6: sse2x4 xor() 3977 MB/s
[ 2.860851] raid6: using algorithm sse2x2 gen() 6130 MB/s
[ 2.861842] raid6: .... xor() 2857 MB/s, rmw enabled
[ 2.862733] raid6: using intx1 recovery algorithm
[ 2.866013] xor: measuring software checksum speed
[ 2.915263] prefetch64-sse: 13813.000 MB/sec
[ 2.977767] generic_sse: 12994.000 MB/sec
[ 2.978540] xor: using function: prefetch64-sse (13813.000 MB/sec)
[ 2.980609] async_tx: api initialized (async)
done.
Begin: Running /scripts/init-premount ... done.
Begin: Mounting root file system ... Begin: Running /scripts/local-top ... [ 3.039187] device-mapper: uevent: version 1.0.3
[ 3.041132] device-mapper: ioctl: 4.37.0-ioctl (2017-09-20) initialised: dm-devel@redhat.com
[ 3.060944] random: lvm: uninitialized urandom read (4 bytes read)
WARNING: Failed to connect to lvmetad. Falling back to device scanning.
Reading all physical volumes. This may take a while...

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