Looks like this issue only around quantal kernel Starting kernel ... Booting Linux on physical CPU 0 Initializing cgroup subsys cpuset Initializing cgroup subsys cpu Linux version 3.2.0-29-highbank (buildd@iara) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #46-Ubuntu SMP PREEMPT Fri Jul 27 20:03:53 UTC 2012 (Ubuntu 3.2.0-29.46-highbank 3.2.24) CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=10c5387d CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache Machine: Highbank, model: Calxeda Highbank Memory policy: ECC disabled, Data cache writealloc PERCPU: Embedded 7 pages/cpu @c3410000 s5280 r8192 d15200 u32768 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 1037583 Kernel command line: console=ttyAMA0 root=UUID=b369bf8b-1985-4845-a9c6-e6c84921b0fa nosplash earlyprintk PID hash table entries: 4096 (order: 2, 16384 bytes) Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) allocated 16748544 bytes of page_cgroup please try 'cgroup_disable=memory' option if you don't want memory cgroups Memory: 4089MB = 4089MB total Memory: 4125264k/4125264k available, 61872k reserved, 3288064K highmem Virtual kernel memory layout: vector : 0xffff0000 - 0xffff1000 ( 4 kB) fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB) vmalloc : 0xf7000000 - 0xfee00000 ( 126 MB) lowmem : 0xc0000000 - 0xf6e00000 ( 878 MB) pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB) modules : 0xbf000000 - 0xbfe00000 ( 14 MB) .text : 0xc0008000 - 0xc0534eec (5300 kB) .init : 0xc0535000 - 0xc05614a0 ( 178 kB) .data : 0xc0562000 - 0xc058f860 ( 183 kB) .bss : 0xc058f884 - 0xc05c8d24 ( 230 kB) SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=4, Nodes=1 Preemptible hierarchical RCU implementation. NR_IRQS:192 L310 cache controller enabled l2x0: 16 ways, CACHE_ID 0x420000c8, AUX_CTRL 0x020b0000, Cache size: 4194304 B sched_clock: 32 bits at 150MHz, resolution 6ns, wraps every 28633ms Console: colour dummy device 80x30 Calibrating delay loop... 398.13 BogoMIPS (lpj=1990656) pid_max: default: 32768 minimum: 301 Security Framework initialized AppArmor: AppArmor initialized Yama: becoming mindful. Mount-cache hash table entries: 512 Initializing cgroup subsys cpuacct Initializing cgroup subsys memory Initializing cgroup subsys devices Initializing cgroup subsys freezer Initializing cgroup subsys blkio Initializing cgroup subsys perf_event CPU: Testing write buffer coherency: ok CPU0: thread -1, cpu 0, socket 9, mpidr 80000900 Calibrating local timer... 49.97MHz. hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters available Setting up static identity map for 0x3e58e8 - 0x3e5930 CPU1: Booted secondary processor CPU1: thread -1, cpu 1, socket 9, mpidr 80000901 CPU1: Unknown IPI message 0x0 CPU2: Booted secondary processor CPU2: thread -1, cpu 2, socket 9, mpidr 80000902 CPU2: Unknown IPI message 0x0 CPU3: Booted secondary processor CPU3: thread -1, cpu 3, socket 9, mpidr 80000903 Brought up 4 CPUs CPU3: Unknown IPI message 0x0 SMP: Total of 4 processors activated (1592.52 BogoMIPS). devtmpfs: initialized print_constraints: dummy: NET: Registered protocol family 16 Trying to unpack rootfs image as initramfs... hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers. hw-breakpoint: maximum watchpoint size is 4 bytes. Serial: AMBA PL011 UART driver fff36000.serial: ttyAMA0 at MMIO 0xfff36000 (irq = 52) is a PL011 rev3 console [ttyAMA0] enabled bio: create slab at 0 SCSI subsystem initialized usbcore: registered new interface driver usbfs usbcore: registered new interface driver hub usbcore: registered new device driver usb NetLabel: Initializing NetLabel: domain hash size = 128 NetLabel: protocols = UNLABELED CIPSOv4 NetLabel: unlabeled traffic allowed by default Switching to clocksource timer1 AppArmor: AppArmor Filesystem Enabled Freeing initrd memory: 1720K NET: Registered protocol family 2 IP route cache hash table entries: 32768 (order: 5, 131072 bytes) TCP established hash table entries: 131072 (order: 8, 1048576 bytes) TCP bind hash table entries: 65536 (order: 7, 786432 bytes) TCP: Hash tables configured (established 131072 bind 65536) TCP reno registered UDP hash table entries: 512 (order: 2, 16384 bytes) UDP-Lite hash table entries: 512 (order: 2, 16384 bytes) NET: Registered protocol family 1 audit: initializing netlink socket (disabled) type=2000 audit(0.660:1): initialized highmem bounce pool size: 64 pages VFS: Disk quotas dquot_6.5.2 Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) fuse init (API version 7.17) msgmni has been set to 1638 Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253) io scheduler noop registered io scheduler deadline registered io scheduler cfq registered (default) dma-pl330 fff3d000.dma: Cannot get operation clock. dma-pl330: probe of fff3d000.dma failed with error -22 uart-pl011 fff36000.serial: no DMA platform data brd: module loaded loop: module loaded ahci: SSS flag set, parallel bus scan disabled ahci ffe08000.sata: AHCI 0001.0300 32 slots 5 ports 3 Gbps 0x1f impl platform mode ahci ffe08000.sata: flags: ncq sntf stag pm led clo only pmp pio slum part ccc apst scsi0 : ahci_platform scsi1 : ahci_platform scsi2 : ahci_platform scsi3 : ahci_platform scsi4 : ahci_platform ata1: SATA max UDMA/133 mmio [mem 0xffe08000-0xffe17fff] port 0x100 irq 115 ata2: SATA max UDMA/133 mmio [mem 0xffe08000-0xffe17fff] port 0x180 irq 115 ata3: SATA max UDMA/133 mmio [mem 0xffe08000-0xffe17fff] port 0x200 irq 115 ata4: SATA max UDMA/133 mmio [mem 0xffe08000-0xffe17fff] port 0x280 irq 115 ata5: SATA max UDMA/133 mmio [mem 0xffe08000-0xffe17fff] port 0x300 irq 115 Fixed MDIO Bus: probed tun: Universal TUN/TAP device driver, 1.6 tun: (C) 1999-2004 Max Krasnyansky