$ ~/build/qboot-qemu/x86_64-softmmu/qemu-system-x86_64 bios.bin -kernel /boot/vmlinuz-4.0.0-1.fc22.x86_64 -serial mon:stdio -append 'console=ttyS0,115200,8n1' WARNING: Image format was not specified for 'bios.bin' and probing guessed raw. Automatically detecting the format is dangerous for raw images, write operations on block 0 will be restricted. Specify the 'raw' format explicitly to remove the restrictions. [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Initializing cgroup subsys cpuacct [ 0.000000] Linux version 4.0.0-1.fc22.x86_64 (mockbuild@bkernel02.phx2.fedoraproject.org) (gcc version 5.0.0 20150319 (Red Hat 5.0.0-0.21) (GCC) ) #1 SMP Mon Apr 13 10:03:33 UTC 2015 [ 0.000000] Command line: console=ttyS0,115200,8n1 [ 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 0x0000000000100000-0x0000000007fdffff] usable [ 0.000000] BIOS-e820: [mem 0x0000000007fe0000-0x0000000007ffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved [ 0.000000] NX (Execute Disable) protection: active [ 0.000000] SMBIOS 2.8 present. [ 0.000000] e820: last_pfn = 0x7fe0 max_arch_pfn = 0x400000000 [ 0.000000] PAT configuration [0-7]: WB WC UC- UC WB WC UC- UC [ 0.000000] found SMP MP-table at [mem 0x000f64c0-0x000f64cf] mapped at [ffff8800000f64c0] [ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff] [ 0.000000] init_memory_mapping: [mem 0x07c00000-0x07dfffff] [ 0.000000] init_memory_mapping: [mem 0x00100000-0x07bfffff] [ 0.000000] init_memory_mapping: [mem 0x07e00000-0x07fdffff] [ 0.000000] ACPI: Early table checksum verification disabled [ 0.000000] ACPI: RSDP 0x00000000000F62C0 000014 (v00 BOCHS ) [ 0.000000] ACPI: RSDT 0x0000000007FE16EE 000034 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: FACP 0x0000000007FE0C14 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001) [ 0.000000] ACPI: DSDT 0x0000000007FE0040 000BD4 (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: FACS 0x0000000007FE0000 000040 [ 0.000000] ACPI: SSDT 0x0000000007FE0C88 0009B6 (v01 BOCHS BXPCSSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: APIC 0x0000000007FE163E 000078 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001) [ 0.000000] ACPI: HPET 0x0000000007FE16B6 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001) [ 0.000000] No NUMA configuration found [ 0.000000] Faking a node at [mem 0x0000000000000000-0x0000000007fdffff] [ 0.000000] NODE_DATA(0) allocated [mem 0x07fcc000-0x07fdffff] [ 0.000000] Zone ranges: [ 0.000000] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.000000] DMA32 [mem 0x0000000001000000-0x0000000007fdffff] [ 0.000000] Normal 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 0x0000000000100000-0x0000000007fdffff] [ 0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x0000000007fdffff] [ 0.000000] ACPI: PM-Timer IO Port: 0x608 [ 0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.000000] ACPI: IOAPIC (id[0x00] address[0xfec00000] gsi_base[0]) [ 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 0x08000000-0xfffbffff] available for PCI devices [ 0.000000] Booting paravirtualized kernel on bare hardware [ 0.000000] setup_percpu: NR_CPUS:1024 nr_cpumask_bits:1 nr_cpu_ids:1 nr_node_ids:1 [ 0.000000] PERCPU: Embedded 32 pages/cpu @ffff880007c00000 s91608 r8192 d31272 u2097152 [ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 32105 [ 0.000000] Policy zone: DMA32 [ 0.000000] Kernel command line: console=ttyS0,115200,8n1 [ 0.000000] PID hash table entries: 512 (order: 0, 4096 bytes) [ 0.000000] Memory: 111460K/130552K available (7737K kernel code, 1149K rwdata, 3340K rodata, 1500K init, 1524K bss, 19092K reserved, 0K cma-reserved) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [ 0.000000] Hierarchical RCU implementation. [ 0.000000] RCU dyntick-idle grace-period acceleration is enabled. [ 0.000000] RCU restricting CPUs from NR_CPUS=1024 to nr_cpu_ids=1. [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1 [ 0.000000] NR_IRQS:65792 nr_irqs:256 16 [ 0.000000] Offload RCU callbacks from all CPUs [ 0.000000] Offload RCU callbacks from CPUs: 0. [ 0.000000] Console: colour VGA+ 80x25 [ 0.000000] console [ttyS0] enabled [ 0.000000] tsc: Fast TSC calibration using PIT [ 0.000000] tsc: Detected 2294.656 MHz processor [ 0.006161] Calibrating delay loop (skipped), value calculated using timer frequency.. 4589.31 BogoMIPS (lpj=2294656) [ 0.006717] pid_max: default: 32768 minimum: 301 [ 0.007373] ACPI: Core revision 20150204 [ 0.030176] ACPI: All ACPI Tables successfully acquired [ 0.032365] Security Framework initialized [ 0.034068] SELinux: Initializing. [ 0.034437] Yama: becoming mindful. [ 0.036748] Dentry cache hash table entries: 16384 (order: 5, 131072 bytes) [ 0.037256] Inode-cache hash table entries: 8192 (order: 4, 65536 bytes) [ 0.037632] Mount-cache hash table entries: 512 (order: 0, 4096 bytes) [ 0.037814] Mountpoint-cache hash table entries: 512 (order: 0, 4096 bytes) [ 0.046439] Initializing cgroup subsys blkio [ 0.046732] Initializing cgroup subsys memory [ 0.047254] Initializing cgroup subsys devices [ 0.047474] Initializing cgroup subsys freezer [ 0.047680] Initializing cgroup subsys net_cls [ 0.047833] Initializing cgroup subsys perf_event [ 0.048101] Initializing cgroup subsys net_prio [ 0.048282] Initializing cgroup subsys hugetlb [ 0.049967] mce: CPU supports 10 MCE banks [ 0.050866] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0 [ 0.051052] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0 [ 0.266430] Freeing SMP alternatives memory: 28K (ffffffff81e98000 - ffffffff81e9f000) [ 0.273613] ftrace: allocating 27819 entries in 109 pages [ 0.329350] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 [ 0.339000] smpboot: CPU0: AMD QEMU Virtual CPU version 2.3.50 (fam: 06, model: 06, stepping: 03) [ 0.339232] Performance Events: Broken PMU hardware detected, using software events only. [ 0.339624] Failed to access perfctr msr (MSR c0010004 is 0) [ 0.348720] x86: Booted up 1 node, 1 CPUs [ 0.348882] smpboot: Total of 1 processors activated (4589.31 BogoMIPS) [ 0.353573] NMI watchdog: disabled (cpu0): hardware events not enabled [ 0.359840] devtmpfs: initialized [ 0.376403] atomic64_test: passed for x86-64 platform with CX8 and with SSE [ 0.376570] pinctrl core: initialized pinctrl subsystem [ 0.377804] RTC time: 15:25:42, date: 05/21/15 [ 0.382095] NET: Registered protocol family 16 [ 0.385619] cpuidle: using governor menu [ 0.386498] ACPI: bus type PCI registered [ 0.386670] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 [ 0.388273] PCI: Using configuration type 1 for base access [ 0.404648] ACPI: Added _OSI(Module Device) [ 0.404753] ACPI: Added _OSI(Processor Device) [ 0.404846] ACPI: Added _OSI(3.0 _SCP Extensions) [ 0.404931] ACPI: Added _OSI(Processor Aggregator Device) [ 0.420992] ACPI: Interpreter enabled [ 0.421319] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S1_] (20150204/hwxface-580) [ 0.421630] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S2_] (20150204/hwxface-580) [ 0.422361] ACPI: (supports S0 S3 S4 S5) [ 0.422494] ACPI: Using IOAPIC for interrupt routing [ 0.423018] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 0.451426] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 0.451853] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI] [ 0.452125] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM [ 0.453445] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge. [ 0.457407] acpiphp: Slot [3] registered [ 0.457661] acpiphp: Slot [4] registered [ 0.457884] acpiphp: Slot [5] registered [ 0.458148] acpiphp: Slot [6] registered [ 0.458369] acpiphp: Slot [7] registered [ 0.458622] acpiphp: Slot [8] registered [ 0.458827] acpiphp: Slot [9] registered [ 0.459131] acpiphp: Slot [10] registered [ 0.459301] acpiphp: Slot [11] registered [ 0.459468] acpiphp: Slot [12] registered [ 0.459642] acpiphp: Slot [13] registered [ 0.459811] acpiphp: Slot [14] registered [ 0.460087] acpiphp: Slot [15] registered [ 0.460268] acpiphp: Slot [16] registered [ 0.460450] acpiphp: Slot [17] registered [ 0.460636] acpiphp: Slot [18] registered [ 0.460819] acpiphp: Slot [19] registered [ 0.461082] acpiphp: Slot [20] registered [ 0.461276] acpiphp: Slot [21] registered [ 0.461452] acpiphp: Slot [22] registered [ 0.461640] acpiphp: Slot [23] registered [ 0.461828] acpiphp: Slot [24] registered [ 0.462074] acpiphp: Slot [25] registered [ 0.462280] acpiphp: Slot [26] registered [ 0.462475] acpiphp: Slot [27] registered [ 0.462687] acpiphp: Slot [28] registered [ 0.462885] acpiphp: Slot [29] registered [ 0.463139] acpiphp: Slot [30] registered [ 0.463343] acpiphp: Slot [31] registered [ 0.463486] PCI host bridge to bus 0000:00 [ 0.463713] pci_bus 0000:00: root bus resource [bus 00-ff] [ 0.463952] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] [ 0.464159] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] [ 0.464292] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] [ 0.464418] pci_bus 0000:00: root bus resource [mem 0x08000000-0xfebfffff window] [ 0.471264] pci 0000:00:01.1: legacy IDE quirk: reg 0x10: [io 0x01f0-0x01f7] [ 0.471427] pci 0000:00:01.1: legacy IDE quirk: reg 0x14: [io 0x03f6] [ 0.471593] pci 0000:00:01.1: legacy IDE quirk: reg 0x18: [io 0x0170-0x0177] [ 0.471724] pci 0000:00:01.1: legacy IDE quirk: reg 0x1c: [io 0x0376] [ 0.472949] pci 0000:00:01.3: quirk: [io 0x0600-0x063f] claimed by PIIX4 ACPI [ 0.473199] pci 0000:00:01.3: quirk: [io 0x0700-0x070f] claimed by PIIX4 SMB [ 0.492519] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11) [ 0.493439] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11) [ 0.494130] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11) [ 0.494717] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11) [ 0.495145] ACPI: PCI Interrupt Link [LNKS] (IRQs *9) [ 0.496886] ACPI: Enabled 16 GPEs in block 00 to 0F [ 0.500225] vgaarb: setting as boot device: PCI:0000:00:02.0 [ 0.500417] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none [ 0.500572] vgaarb: loaded [ 0.500725] vgaarb: bridge control possible 0000:00:02.0 [ 0.502070] SCSI subsystem initialized [ 0.503283] ACPI: bus type USB registered [ 0.503706] usbcore: registered new interface driver usbfs [ 0.504124] usbcore: registered new interface driver hub [ 0.504418] usbcore: registered new device driver usb [ 0.505915] PCI: Using ACPI for IRQ routing [ 0.511145] NetLabel: Initializing [ 0.511221] NetLabel: domain hash size = 128 [ 0.511312] NetLabel: protocols = UNLABELED CIPSOv4 [ 0.512319] NetLabel: unlabeled traffic allowed by default [ 0.512752] HPET: 3 timers in total, 0 timers will be used for per-cpu timer [ 0.513143] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0 [ 0.513371] hpet0: 3 comparators, 64-bit 100.000000 MHz counter [ 0.519304] Switched to clocksource hpet [ 0.590200] pnp: PnP ACPI init [ 0.595506] pnp: PnP ACPI: found 6 devices [ 0.620325] NET: Registered protocol family 2 [ 0.624586] TCP established hash table entries: 1024 (order: 1, 8192 bytes) [ 0.624830] TCP bind hash table entries: 1024 (order: 2, 16384 bytes) [ 0.625168] TCP: Hash tables configured (established 1024 bind 1024) [ 0.625595] TCP: reno registered [ 0.625798] UDP hash table entries: 256 (order: 1, 8192 bytes) [ 0.626104] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes) [ 0.627381] NET: Registered protocol family 1 [ 0.627740] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 0.627934] pci 0000:00:01.0: PIIX3: Enabling Passive Release [ 0.628224] pci 0000:00:01.0: Activating ISA DMA hang workarounds [ 0.633786] microcode: AMD CPU family 0x6 not supported [ 0.642940] futex hash table entries: 256 (order: 2, 16384 bytes) [ 0.643542] Initialise system trusted keyring [ 0.646479] audit: initializing netlink subsys (disabled) [ 0.647356] audit: type=2000 audit(1432221941.646:1): initialized [ 0.651395] HugeTLB registered 2 MB page size, pre-allocated 0 pages [ 0.664904] zpool: loaded [ 0.664995] zbud: loaded [ 0.666729] VFS: Disk quotas dquot_6.5.2 [ 0.667291] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 0.673080] Key type big_key registered [ 0.687886] alg: No test for stdrng (krng) [ 0.688185] NET: Registered protocol family 38 [ 0.688411] Key type asymmetric registered [ 0.688560] Asymmetric key parser 'x509' registered [ 0.689233] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252) [ 0.689908] io scheduler noop registered [ 0.690183] io scheduler deadline registered [ 0.690672] io scheduler cfq registered (default) [ 0.692898] pci_hotplug: PCI Hot Plug PCI Core version: 0.5 [ 0.693759] pciehp: PCI Express Hot Plug Controller Driver version: 0.4 [ 0.695853] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 [ 0.696425] ACPI: Power Button [PWRF] [ 0.698955] GHES: HEST is not enabled! [ 0.699941] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 0.722410] 00:05: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 0.727908] Non-volatile memory driver v1.3 [ 0.728450] Linux agpgart interface v0.103 [ 0.737821] scsi host0: ata_piix [ 0.739258] scsi host1: ata_piix [ 0.739776] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc040 irq 14 [ 0.739924] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc048 irq 15 [ 0.741151] libphy: Fixed MDIO Bus: probed [ 0.744806] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 0.745087] ehci-pci: EHCI PCI platform driver [ 0.745374] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 0.745597] ohci-pci: OHCI PCI platform driver [ 0.745842] uhci_hcd: USB Universal Host Controller Interface driver [ 0.746552] usbcore: registered new interface driver usbserial [ 0.746805] usbcore: registered new interface driver usbserial_generic [ 0.747485] usbserial: USB Serial support registered for generic [ 0.748422] i8042: PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12 [ 0.750640] serio: i8042 KBD port at 0x60,0x64 irq 1 [ 0.750918] serio: i8042 AUX port at 0x60,0x64 irq 12 [ 0.752612] mousedev: PS/2 mouse device common for all mice [ 0.755247] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input1 [ 0.757325] rtc_cmos 00:00: RTC can wake from S4 [ 0.760557] rtc_cmos 00:00: rtc core: registered rtc_cmos as rtc0 [ 0.761197] rtc_cmos 00:00: alarms up to one day, 114 bytes nvram, hpet irqs [ 0.761850] device-mapper: uevent: version 1.0.3 [ 0.762944] device-mapper: ioctl: 4.30.0-ioctl (2014-12-22) initialised: dm-devel@redhat.com [ 0.765232] hidraw: raw HID events driver (C) Jiri Kosina [ 0.766546] usbcore: registered new interface driver usbhid [ 0.766647] usbhid: USB HID core driver [ 0.767419] drop_monitor: Initializing network drop monitor service [ 0.768575] ip_tables: (C) 2000-2006 Netfilter Core Team [ 0.770188] TCP: cubic registered [ 0.770337] Initializing XFRM netlink socket [ 0.771645] NET: Registered protocol family 10 [ 0.778404] mip6: Mobile IPv6 [ 0.778584] NET: Registered protocol family 17 [ 0.781761] Loading compiled-in X.509 certificates [ 0.788763] Loaded X.509 cert 'Fedora kernel signing key: d0cbee4318c9d255a27f7577c0e6d2f9e5322f4f' [ 0.789325] registered taskstats version 1 [ 0.792570] Magic number: 15:536:437 [ 0.793379] rtc_cmos 00:00: setting system clock to 2015-05-21 15:25:42 UTC (1432221942) [ 0.899828] ata2.00: ATAPI: QEMU DVD-ROM, 2.3.50, max UDMA/100 [ 0.901342] ata2.00: configured for MWDMA2 [ 0.902569] ata1.00: ATA-7: QEMU HARDDISK, 2.3.50, max UDMA/100 [ 0.902701] ata1.00: 128 sectors, multi 16: LBA48 [ 0.903979] ata1.00: configured for MWDMA2 [ 0.912125] scsi 0:0:0:0: Direct-Access ATA QEMU HARDDISK 50 PQ: 0 ANSI: 5 [ 0.915924] sd 0:0:0:0: [sda] 128 512-byte logical blocks: (65.5 kB/64.0 KiB) [ 0.917627] sd 0:0:0:0: [sda] Write Protect is off [ 0.918419] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 0.920355] sd 0:0:0:0: Attached scsi generic sg0 type 0 [ 0.922432] scsi 1:0:0:0: CD-ROM QEMU QEMU DVD-ROM 2.3. PQ: 0 ANSI: 5 [ 0.935866] sr 1:0:0:0: [sr0] scsi3-mmc drive: 4x/4x cd/rw xa/form2 tray [ 0.936232] cdrom: Uniform CD-ROM driver Revision: 3.20 [ 0.939369] sr 1:0:0:0: Attached scsi generic sg1 type 5 [ 0.941729] sd 0:0:0:0: [sda] Attached SCSI disk [ 1.593026] input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input3 [ 1.594797] md: Waiting for all devices to be available before autodetect [ 1.594917] md: If you don't use raid, use raid=noautodetect [ 1.597358] md: Autodetecting RAID arrays. [ 1.597476] md: Scanned 0 and added 0 devices. [ 1.597559] md: autorun ... [ 1.597621] md: ... autorun DONE. [ 1.599007] VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6 [ 1.599252] Please append a correct "root=" boot option; here are the available partitions: [ 1.599579] 0800 64 sda driver: sd [ 1.599719] 0b00 1048575 sr0 driver: sr [ 1.599897] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) [ 1.600049] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.0.0-1.fc22.x86_64 #1 [ 1.600049] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.8.1-0-g4adadbd-20150316_085822-nilsson.home.kraxel.org 04/01/2014 [ 1.600049] 0000000000000000 0000000048a629a1 ffff88000718fd78 ffffffff81783088 [ 1.600049] 0000000000000000 ffffffff81a39ba8 ffff88000718fdf8 ffffffff81781ebe [ 1.600049] 3030623000000010 ffff88000718fe08 ffff88000718fda8 0000000048a629a1 [ 1.600049] Call Trace: [ 1.600049] [] dump_stack+0x45/0x57 [ 1.600049] [] panic+0xd0/0x203 [ 1.600049] [] mount_block_root+0x209/0x2a6 [ 1.600049] [] mount_root+0x54/0x58 [ 1.600049] [] prepare_namespace+0x13d/0x176 [ 1.600049] [] kernel_init_freeable+0x20b/0x22f [ 1.600049] [] ? finish_task_switch+0x64/0x160 [ 1.600049] [] ? rest_init+0x80/0x80 [ 1.600049] [] kernel_init+0xe/0xf0 [ 1.600049] [] ret_from_fork+0x58/0x90 [ 1.600049] [] ? rest_init+0x80/0x80 [ 1.600049] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff) [ 1.600049] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)