With latest Kernel 4.4-rc8 exactly the same problem. Warm/Reboot hangs and cold boot works.
Here the latest output from the serial device I could grab after starting the kernel with console=ttyS0,115200n8 . Maybe the first supect entry is [ 37.977527] RAMDISK: incomplete write (28969 != 32768) . [ 32.622294] pci_bus 0000:00: root bus resource [bus 00-ff] [ 32.739918] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 9 10 *11) [ 32.814085] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 9 10 *11) [ 32.886389] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 9 *10 11) [ 32.972507] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 *9 10 11) [ 33.058506] ACPI: Enabled 2 GPEs in block 00 to 07 [ 33.130136] vgaarb: setting as boot device: PCI:0000:00:02.0 [ 33.222488] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none [ 33.360394] vgaarb: loaded [ 33.402376] vgaarb: bridge control possible 0000:00:02.0 [ 33.488681] SCSI subsystem initialized [ 33.517301] ACPI: bus type USB registered [ 33.578541] usbcore: registered new interface driver usbfs [ 33.663454] usbcore: registered new interface driver hub [ 33.745715] usbcore: registered new device driver usb [ 33.833963] PCI: Using ACPI for IRQ routing [ 33.877871] NetLabel: Initializing [ 33.934345] NetLabel: domain hash size = 128 [ 34.001805] NetLabel: protocols = UNLABELED CIPSOv4 [ 34.075036] NetLabel: unlabeled traffic allowed by default [ 34.163253] clocksource: Switched to clocksource kvm-clock [ 34870]ppmo AArr lest Eable 5.71] p:nPCP fnd dic [ 35.548313] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns [ 35.552576] NET: Registered protocol family 2 [ 35.553011] TCP established hash table entries: 16384 (order: 5, 131072 bytes) [ 35.553576] TCP bind hash table entries: 16384 (order: 6, 262144 bytes) [ 35.556144] TCP: Hash tables configured (established 16384 bind 16384) [ 35.556657] UDP hash table entries: 1024 (order: 3, 32768 bytes) [ 35.559067] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes) [ 35.562046] NET: Registered protocol family 1 [ 35.562389] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 35.565144] pci 0000:00:01.0: Activating ISA DMA hang workarounds [ 35.567385] Trying to unpack rootfs image as initramfs... [ 35.792364] rootfs image is not initramfs (junk in compressed archive); looks like an initrd [ 35.877874] Freeing initrd memory: 29664K (ffff880034600000 - ffff8800362f8000) [ 35.948245] platform rtc_cmos: registered platform RTC device (no PNP device found) [ 36.008763] RAPL PMU detected, API unit is 2^-32 Joules, 4 fixed counters 10737418240 ms ovfl timer [ 36.082997] hw unit of domain pp0-core 2^-0 Joules [ 36.114337] hw unit of domain package 2^-0 Joules [ 36.147513] hw unit of domain dram 2^-0 Joules [ 36.169050] hw unit of domain pp1-gpu 2^-0 Joules [ 36.192590] Scanning for low memory corruption every 60 seconds [ 36.233018] futex hash table entries: 512 (order: 3, 32768 bytes) [ 36.295850] audit: initializing netlink subsys (disabled) [ 36.314798] audit: type=2000 audit(1452151393.649:1): initialized [ 36.315458] Initialise system trusted keyring [ 36.315942] HugeTLB registered 2 MB page size, pre-allocated 0 pages [ 36.317217] zbud: loaded [ 36.317587] VFS: Disk quotas dquot_6.6.0 [ 36.317907] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 36.318779] fuse init (API version 7.23) [ 36.319173] Key type big_key registered [ 36.320080] Key type asymmetric registered [ 36.320393] Asymmetric key parser 'x509' registered [ 36.320785] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249) [ 36.321386] io scheduler noop registered [ 36.321688] io scheduler deadline registered (default) [ 36.322094] io scheduler cfq registered [ 36.322453] pci_hotplug: PCI Hot Plug PCI Core version: 0.5 [ 36.322879] pciehp: PCI Express Hot Plug Controller Driver version: 0.4 [ 36.323510] ACPI: AC Adapter [AC] (on-line) [ 36.323867] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 [ 36.324423] ACPI: Power Button [PWRF] [ 36.324749] input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1 [ 36.325303] ACPI: Sleep Button [SLPF] [ 36.325714] GHES: HEST is not enabled! [ 36.326372] virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver [ 36.327004] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled [ 36.348983] 00:02: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 36.419122] Linux agpgart interface v0.103 [ 36.460765] brd: module loaded [ 36.462022] loop: module loaded [ 36.462412] libphy: Fixed MDIO Bus: probed [ 36.462728] tun: Universal TUN/TAP device driver, 1.6 [ 36.463111] tun: (C) 1999-2004 Max Krasnyansky <[email protected]> [ 36.463806] PPP generic driver version 2.4.2 [ 36.466438] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 36.467981] ehci-pci: EHCI PCI platform driver [ 36.476428] ehci-pci 0000:00:0b.0: EHCI Host Controller [ 36.515142] ehci-pci 0000:00:0b.0: new USB bus registered, assigned bus number 1 [ 36.579855] ehci-pci 0000:00:0b.0: irq 19, io mem 0xf0405000 [ 36.643429] ehci-pci 0000:00:0b.0: USB 2.0 started, EHCI 1.00 [ 36.676791] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 [ 36.687768] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 36.691388] usb usb1: Product: EHCI Host Controller [ 36.691758] usb usb1: Manufacturer: Linux 4.4.0-040400rc8-generic ehci_hcd [ 36.724610] usb usb1: SerialNumber: 0000:00:0b.0 [ 36.754275] hub 1-0:1.0: USB hub found [ 36.754570] hub 1-0:1.0: 12 ports detected [ 36.756090] ehci-platform: EHCI generic platform driver [ 36.756508] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 36.757941] ohci-pci: OHCI PCI platform driver [ 36.759174] ohci-pci 0000:00:06.0: OHCI PCI host controller [ 36.760083] ohci-pci 0000:00:06.0: new USB bus registered, assigned bus number 2 [ 36.761165] ohci-pci 0000:00:06.0: irq 22, io mem 0xf0404000 [ 36.817138] usb usb2: New USB device found, idVendor=1d6b, idProduct=0001 [ 36.868765] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 36.877729] usb usb2: Product: OHCI PCI host controller [ 36.878669] usb usb2: Manufacturer: Linux 4.4.0-040400rc8-generic ohci_hcd [ 36.879670] usb usb2: SerialNumber: 0000:00:06.0 [ 36.882593] hub 2-0:1.0: USB hub found [ 36.882915] hub 2-0:1.0: 12 ports detected [ 36.883689] ohci-platform: OHCI generic platform driver [ 36.884105] uhci_hcd: USB Universal Host Controller Interface driver [ 36.886580] i8042: PNP: PS/2 Controller [PNP0303:PS2K,PNP0f03:PS2M] at 0x60,0x64 irq 1,12 [ 36.887976] serio: i8042 KBD port at 0x60,0x64 irq 1 [ 36.888369] serio: i8042 AUX port at 0x60,0x64 irq 12 [ 36.902100] mousedev: PS/2 mouse device common for all mice [ 36.955726] tsc: Refined TSC clocksource calibration: 3391.958 MHz [ 37.032996] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x30e4a1cee84, max_idle_ns: 440795227385 ns [ 37.112585] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input2 [ 37.110 r_cos rtc_cmos: r ce:egisrertcms r0 [ 37.697372] rtc_cmos rtc_cmos: alarms up to one day, 114 bytes nvram [ 37.711486] i2c /dev entries driver [ 37.723190] device-mapper: uevent: version 1.0.3 [ 37.737128] device-mapper: ioctl: 4.34.0-ioctl (2015-10-28) initialised: [email protected] [ 37.741026] ledtrig-cpu: registered to indicate activity on CPUs [ 37.741860] NET: Registered protocol family 10 [ 37.742361] NET: Registered protocol family 17 [ 37.742714] Key type dns_resolver registered [ 37.743168] microcode: CPU0 sig=0x306c3, pf=0x40, revision=0x0 [ 37.743667] microcode: CPU1 sig=0x306c3, pf=0x40, revision=0x0 [ 37.744151] microcode: Microcode Update Driver: v2.01 <[email protected]>, Peter Oruba [ 37.744953] registered taskstats version 1 [ 37.745305] Loading compiled-in X.509 certificates [ 37.746181] Loaded X.509 cert 'Build time autogenerated kernel key: c798cfb2b88d80fae33a5be6c52694131f679f6c' [ 37.747006] zswap: loaded using pool lzo/zbud [ 37.749314] Key type trusted registered [ 37.750452] Key type encrypted registered [ 37.750795] AppArmor: AppArmor sha1 policy hashing enabled [ 37.751248] ima: No TPM chip found, activating TPM-bypass! [ 37.751754] evm: HMAC attrs: 0x1 [ 37.752315] Magic number: 0:505:318 [ 37.752630] tty tty43: hash matches [ 37.752967] rtc_cmos rtc_cmos: setting system clock to 2016-01-07 07:20:33 UTC (1452151233) [ 37.753729] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found [ 37.754211] EDD information not available. [ 37.755893] md: Waiting for all devices to be available before autodetect [ 37.758339] md: If you don't use raid, use raid=noautodetect [ 37.758913] md: Autodetecting RAID arrays. [ 37.760360] md: Scanned 0 and added 0 devices. [ 37.760717] md: autorun ... [ 37.762372] md: ... autorun DONE. [ 37.762641] RAMDISK: gzip image found at block 0 [ 37.891301] usb 2-1: new full-speed USB device number 2 using ohci-pci [ 37.977527] RAMDISK: incomplete write (28969 != 32768) [ 38.016419] write error [ 38.030744] VFS: Cannot open root device "UUID=07e383b5-7e12-4530-8ae0-75c104f67e2b" or unknown-block(0,0): error -6 [ 38.066481] Please append a correct "root=" boot option; here are the available partitions: [ 38.067116] 0100 65536 ram0 (driver?) [ 38.067524] 0101 65536 ram1 (driver?) [ 38.067886] 0102 65536 ram2 (driver?) [ 38.068250] 0103 65536 ram3 (driver?) [ 38.068611] 0104 65536 ram4 (driver?) [ 38.068973] 0105 65536 ram5 (driver?) [ 38.069355] 0106 65536 ram6 (driver?) [ 38.069717] 0107 65536 ram7 (driver?) [ 38.086849] 0108 65536 ram8 (driver?) [ 38.111303] 0109 65536 ram9 (driver?) [ 38.151526] 010a 65536 ram10 (driver?) [ 38.186534] 010b 65536 ram11 (driver?) [ 38.217807] 010c 65536 ram12 [ 38.243321] usb 2-1: New USB device found, idVendor=80ee, idProduct=0021 [ 38.243331] usb 2-1: New USB device strings: Mfr=1, Product=3, SerialNumber=0 [ 38.243332] usb 2-1: Product: USB Tablet [ 38.243332] usb 2-1: Manufacturer: VirtualBox [ 38.408861] (driver?) [ 38.411093] 010d 65536 ram13 (driver?) [ 38.420132] 010e 65536 ram14 (driver?) [ 38.467283] 010f 65536 ram15 (driver?) [ 38.517942] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) [ 38.613740] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.4.0-040400rc8-generic #201601051225 [ 38.664552] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 [ 38.752317] 0000000000000000 00000000437a7ecb ffff88007ceffde8 ffffffff813c8dc4 [ 38.787742] ffffffff81ca79f0 ffff88007ceffe70 ffffffff81186592 3130002000000010 [ 38.860074] ffff88007ceffe80 ffff88007ceffe18 00000000437a7ecb 0000000000000008 [ 38.918804] Call Trace: [ 38.941131] [<ffffffff813c8dc4>] dump_stack+0x44/0x60 [ 38.978431] [<ffffffff81186592>] panic+0xd3/0x21a [ 39.031169] [<ffffffff81f56576>] mount_block_root+0x201/0x294 [ 39.077107] [<ffffffff81f567b2>] mount_root+0x65/0x68 [ 39.117197] [<ffffffff81f5691f>] prepare_namespace+0x16a/0x1a2 [ 39.135615] [<ffffffff81f5621b>] kernel_init_freeable+0x1e9/0x212 [ 39.160145] [<ffffffff817f13e0>] ? rest_init+0x80/0x80 [ 39.213659] [<ffffffff817f13ee>] kernel_init+0xe/0xe0 [ 39.257966] [<ffffffff817fdc8f>] ret_from_fork+0x3f/0x70 [ 39.285549] [<ffffffff817f13e0>] ? rest_init+0x80/0x80 [ 39.286662] Kernel Offset: disabled [ 39.314698] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1531455 Title: reboot under Oracle Virtual Box not possible Status in linux package in Ubuntu: Confirmed Bug description: Running 16.04 server without X under latest Oracle Virtual Box 5.0.12 on Windows. After issuing 'shutdown -r now' the following boot process is not successful and hangs with message: ---[ end of Kernel panic - not syncing: VFS: unable to mound root fs on unknown-block(0,0) If using 'shutdown -h now' and then staring the machine anew from Virtual Box manager, then the system starts as it should. Thus, for short, warm reboot hangs and cold reboot operates as desired. I have the feeling that this behavior was introduced with kernel 4.3, but I cannot swear on it. --- AlsaDevices: total 0 crw-rw----+ 1 root audio 116, 1 Jan 6 11:34 seq crw-rw----+ 1 root audio 116, 33 Jan 6 11:34 timer AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.19.3-0ubuntu2 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: DistroRelease: Ubuntu 16.04 HibernationDevice: RESUME=UUID=cbc2edd0-9886-40c6-bf14-d75f638fc4cf InstallationDate: Installed on 2015-12-23 (14 days ago) InstallationMedia: Ubuntu-Server 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151115) IwConfig: enp0s3 no wireless extensions. lo no wireless extensions. Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 002: ID 80ee:0021 VirtualBox USB Tablet Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: innotek GmbH VirtualBox Package: linux (not installed) PciMultimedia: ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.3.0-5-generic root=UUID=07e383b5-7e12-4530-8ae0-75c104f67e2b ro ProcVersionSignature: Ubuntu 4.3.0-5.16-generic 4.3.3 RelatedPackageVersions: linux-restricted-modules-4.3.0-5-generic N/A linux-backports-modules-4.3.0-5-generic N/A linux-firmware 1.154 RfKill: Error: [Errno 2] No such file or directory Tags: xenial UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' Uname: Linux 4.3.0-5-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 12/01/2006 dmi.bios.vendor: innotek GmbH dmi.bios.version: VirtualBox dmi.board.name: VirtualBox dmi.board.vendor: Oracle Corporation dmi.board.version: 1.2 dmi.chassis.type: 1 dmi.chassis.vendor: Oracle Corporation dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr: dmi.product.name: VirtualBox dmi.product.version: 1.2 dmi.sys.vendor: innotek GmbH To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1531455/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
