On a SunFire SPARC T1000 machine the kernel stalls on boot with every kernel > 3.9.11 including the latest 3.14-rc7. Tried with various configurations (SLAB / SLUB, Perf counters inactive, no tickless kernel...). If booted with "maxcpus=1", no stall and the kernel boots normally. Synmptoms seems similar to bug #61501. SILO Version 1.4.14_git20120819_p1 Allocated 64 Megs of memory at 0x40000000 for kernel Loaded kernel version 3.14.0 [ 0.000000] PROMLIB: Sun IEEE Boot Prom 'OBP 4.30.4.d 2011/07/06 14:27' [ 0.000000] PROMLIB: Root node compatible: sun4v [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Initializing cgroup subsys cpuacct [ 0.000000] Linux version 3.14.0-rc7 (root@xenon.universe.lan) (gcc version 4.5.3 (Gentoo 4.5.3 p1.4) ) #4 SMP Sun Mar 23 20:39:45 EDT 2014 [ 0.000000] bootconsole [earlyprom0] enabled [ 0.000000] ARCH: SUN4V [ 0.000000] Ethernet address: 00:14:4f:6e:cd:36 [ 0.000000] PAGE_OFFSET is 0xffffff8000000000 (max_phys_bits == 39) [ 0.000000] Kernel: Using 4 locked TLB entries for main kernel image. [ 0.000000] Remapping the kernel... done. [ 0.000000] OF stdout device is: /virtual-devices@100/console@1 [ 0.000000] PROM: Built device tree with 73491 bytes of memory. [ 0.000000] MDESC: Size is 38928 bytes. [ 0.000000] PLATFORM: banner-name [Sun Fire(TM) T1000] [ 0.000000] PLATFORM: name [SUNW,Sun-Fire-T1000] [ 0.000000] PLATFORM: hostid [846ecd36] [ 0.000000] PLATFORM: serial# [00ab4130] [ 0.000000] PLATFORM: stick-frequency [3b9aca00] [ 0.000000] PLATFORM: mac-address [144f6ecd36] [ 0.000000] PLATFORM: watchdog-resolution [1000 ms] [ 0.000000] PLATFORM: watchdog-max-timeout [31536000000 ms] [ 0.000000] PLATFORM: max-cpus [32] [ 0.000000] Top of RAM: 0x1ffd32000, Total RAM: 0x1f7922000 [ 0.000000] Memory hole size: 132MB [ 0.000000] Zone ranges: [ 0.000000] Normal [mem 0x08400000-0x1ffd31fff] [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x08400000-0x1ffd01fff] [ 0.000000] node 0: [mem 0x1ffd12000-0x1ffd31fff] [ 0.000000] Booting Linux... [ 0.000000] CPU CAPS: [flush,stbar,swap,muldiv,v9,blkinit,mul32,div32] [ 0.000000] CPU CAPS: [v8plus,ASIBlkInit] [ 0.000000] PERCPU: Embedded 6 pages/cpu @ffffff81fb400000 s13888 r8192 d27072 u131072 [ 0.000000] SUN4V: Mondo queue sizes [cpu(4096) dev(16384) r(8192) nr(256)] [ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 1023255 [ 0.000000] Policy zone: Normal [ 0.000000] Kernel command line: root=/dev/sda4 [ 0.000000] PID hash table entries: 4096 (order: 2, 32768 bytes) [ 0.000000] Sorting __ex_table... [ 0.000000] Memory: 8169472K/8250504K available (4159K kernel code, 341K rwdata, 1072K rodata, 192K init, 6691K bss, 81032K reserved) [ 0.000000] Hierarchical RCU implementation. [ 0.000000] NR_IRQS:255 [ 65.616593] clocksource: mult[800000] shift[23] [ 65.616955] clockevent: mult[80000000] shift[31] [ 65.617902] Console: colour dummy device 80x25 [ 65.618259] console [tty0] enabled [ 65.618577] bootconsole [earlyprom0] disabled [ 0.000000] PROMLIB: Sun IEEE Boot Prom 'OBP 4.30.4.d 2011/07/06 14:27' [ 0.000000] PROMLIB: Root node compatible: sun4v [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Initializing cgroup subsys cpuacct [ 0.000000] Linux version 3.14.0-rc7 (root@xenon.universe.lan) (gcc version 4.5.3 (Gentoo 4.5.3 p1.4) ) #4 SMP Sun Mar 23 20:39:45 EDT 2014 [ 0.000000] bootconsole [earlyprom0] enabled [ 0.000000] ARCH: SUN4V [ 0.000000] Ethernet address: 00:14:4f:6e:cd:36 [ 0.000000] PAGE_OFFSET is 0xffffff8000000000 (max_phys_bits == 39) [ 0.000000] Kernel: Using 4 locked TLB entries for main kernel image. [ 0.000000] Remapping the kernel... done. [ 0.000000] OF stdout device is: /virtual-devices@100/console@1 [ 0.000000] PROM: Built device tree with 73491 bytes of memory. [ 0.000000] MDESC: Size is 38928 bytes. [ 0.000000] PLATFORM: banner-name [Sun Fire(TM) T1000] [ 0.000000] PLATFORM: name [SUNW,Sun-Fire-T1000] [ 0.000000] PLATFORM: hostid [846ecd36] [ 0.000000] PLATFORM: serial# [00ab4130] [ 0.000000] PLATFORM: stick-frequency [3b9aca00] [ 0.000000] PLATFORM: mac-address [144f6ecd36] [ 0.000000] PLATFORM: watchdog-resolution [1000 ms] [ 0.000000] PLATFORM: watchdog-max-timeout [31536000000 ms] [ 0.000000] PLATFORM: max-cpus [32] [ 0.000000] Top of RAM: 0x1ffd32000, Total RAM: 0x1f7922000 [ 0.000000] Memory hole size: 132MB [ 0.000000] Zone ranges: [ 0.000000] Normal [mem 0x08400000-0x1ffd31fff] [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x08400000-0x1ffd01fff] [ 0.000000] node 0: [mem 0x1ffd12000-0x1ffd31fff] [ 0.000000] Booting Linux... [ 0.000000] CPU CAPS: [flush,stbar,swap,muldiv,v9,blkinit,mul32,div32] [ 0.000000] CPU CAPS: [v8plus,ASIBlkInit] [ 0.000000] PERCPU: Embedded 6 pages/cpu @ffffff81fb400000 s13888 r8192 d27072 u131072 [ 0.000000] SUN4V: Mondo queue sizes [cpu(4096) dev(16384) r(8192) nr(256)] [ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 1023255 [ 0.000000] Policy zone: Normal [ 0.000000] Kernel command line: root=/dev/sda4 [ 0.000000] PID hash table entries: 4096 (order: 2, 32768 bytes) [ 0.000000] Sorting __ex_table... [ 0.000000] Memory: 8169472K/8250504K available (4159K kernel code, 341K rwdata, 1072K rodata, 192K init, 6691K bss, 81032K reserved) [ 0.000000] Hierarchical RCU implementation. [ 0.000000] NR_IRQS:255 [ 65.616593] clocksource: mult[800000] shift[23] [ 65.616955] clockevent: mult[80000000] shift[31] [ 65.617902] Console: colour dummy device 80x25 [ 65.618259] console [tty0] enabled [ 65.618577] bootconsole [earlyprom0] disabled [ 65.633039] allocated 16777216 bytes of page_cgroup [ 65.633071] please try 'cgroup_disable=memory' option if you don't want memory cgroups [ 65.693077] Calibrating delay using timer specific routine.. 2012.60 BogoMIPS (lpj=1006302) [ 65.693113] pid_max: default: 32768 minimum: 301 [ 65.696087] Dentry cache hash table entries: 1048576 (order: 10, 8388608 bytes) [ 65.728844] Inode-cache hash table entries: 524288 (order: 9, 4194304 bytes) [ 65.744631] Mount-cache hash table entries: 512 [ 65.745959] Initializing cgroup subsys memory [ 65.746063] Initializing cgroup subsys devices [ 65.746087] Initializing cgroup subsys freezer [ 65.746107] Initializing cgroup subsys hugetlb [ 65.746541] Performance events: Supported PMU type is 'niagara' [ 65.791078] Brought up 32 CPUs [ 65.791197] Testing NMI watchdog ... OK. [ 65.814060] ldc.c:v1.1 (July 22, 2008) [ 65.814080] ldc: Domaining disabled. [ 65.815693] NET: Registered protocol family 16 [ 65.837246] VIO: Adding device channel-devices [ 65.837552] VIO: Adding device vldc-port-0-0 [ 65.837835] VIO: Adding device vldc-port-0-1 [ 65.838130] VIO: Adding device vldc-port-0-2 [ 65.838426] VIO: Adding device vldc-port-1-0 [ 65.838712] VIO: Adding device vldc-port-3-0 [ 65.839025] VIO: Adding device vldc-port-3-8 [ 65.839312] VIO: Adding device ds-1 [ 65.839614] VIO: Adding device ds-0 [ 65.864033] pci_sun4v: Registered hvapi major[1] minor[0] [ 65.864379] /pci@780: SUN4V PCI Bus Module [ 65.864408] /pci@780: On NUMA node -1 [ 65.864438] /pci@780: PCI IO[e810000000] MEM[ea00000000] [ 65.864493] /pci@780: Unable to request IOMMU resource. [ 65.913199] /pci@780: MSI Queue first[0] num[36] count[128] devino[0x18] [ 65.913243] /pci@780: MSI first[0] num[256] mask[0xff] width[32] [ 65.913277] /pci@780: MSI addr32[0x7fff0000:0x10000] addr64[0x3ffff0000:0x10000] [ 65.913321] /pci@780: MSI queues at RA [00000001f8400000] [ 65.913354] PCI: Scanning PBM /pci@780 [ 65.913842] pci_sun4v f027e7bc: PCI host bridge to bus 0000:02 [ 65.913895] pci_bus 0000:02: root bus resource [io 0xe810000000-0xe81fffffff] (bus address [0x0000-0xfffffff]) [ 65.913972] pci_bus 0000:02: root bus resource [mem 0xea00000000-0xea7ffeffff] (bus address [0x00000000-0x7ffeffff]) [ 65.914031] pci_bus 0000:02: root bus resource [bus 02] [ 65.914112] /pci@7c0: SUN4V PCI Bus Module [ 65.914141] /pci@7c0: On NUMA node -1 [ 65.914171] /pci@7c0: PCI IO[f010000000] MEM[f200000000] [ 65.914208] /pci@7c0: Unable to request IOMMU resource. [ 65.962982] /pci@7c0: MSI Queue first[0] num[36] count[128] devino[0x18] [ 65.963025] /pci@7c0: MSI first[0] num[256] mask[0xff] width[32] [ 65.963059] /pci@7c0: MSI addr32[0x7fff0000:0x10000] addr64[0x3ffff0000:0x10000] [ 65.963102] /pci@7c0: MSI queues at RA [00000001f8480000] [ 65.963134] PCI: Scanning PBM /pci@7c0 [ 65.963615] pci_sun4v f0289b94: PCI host bridge to bus 0001:02 [ 65.963665] pci_bus 0001:02: root bus resource [io 0xf010000000-0xf01fffffff] (bus address [0x0000-0xfffffff]) [ 65.963726] pci_bus 0001:02: root bus resource [mem 0xf200000000-0xf27ffeffff] (bus address [0x00000000-0x7ffeffff]) [ 65.963783] pci_bus 0001:02: root bus resource [bus 02-04] [ 65.992410] bio: create slab <bio-0> at 0 [ 65.994415] vgaarb: loaded [ 65.995919] SCSI subsystem initialized [ 65.999446] ds.c:v1.0 (Jul 11, 2007) [ 66.000013] Switched to clocksource stick [ 66.022110] NET: Registered protocol family 2 [ 66.023700] TCP established hash table entries: 65536 (order: 6, 524288 bytes) [ 66.026151] TCP bind hash table entries: 65536 (order: 7, 1048576 bytes) [ 66.030237] TCP: Hash tables configured (established 65536 bind 65536) [ 66.030426] TCP: reno registered [ 66.030518] UDP hash table entries: 4096 (order: 4, 131072 bytes) [ 66.031230] UDP-Lite hash table entries: 4096 (order: 4, 131072 bytes) [ 66.032926] NET: Registered protocol family 1 [ 66.033922] sha1_sparc64: sparc64 sha1 opcode not available. [ 66.033975] sha256_sparc64: sparc64 sha256 opcode not available. [ 66.034008] sha512_sparc64: sparc64 sha512 opcode not available. [ 66.034039] md5_sparc64: sparc64 md5 opcode not available. [ 66.034068] aes_sparc64: sparc64 aes opcodes not available. [ 66.034098] des_sparc64: sparc64 des opcodes not available. [ 66.034128] camellia_sparc64: sparc64 camellia opcodes not available. [ 66.034159] crc32c_sparc64: sparc64 crc32c opcode not available. [ 66.043856] futex hash table entries: 8192 (order: 6, 524288 bytes) [ 66.046629] HugeTLB registered 8 MB page size, pre-allocated 0 pages [ 66.050341] msgmni has been set to 15956 [ 66.053245] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253) [ 66.053299] io scheduler noop registered [ 66.053328] io scheduler deadline registered [ 66.053550] io scheduler cfq registered (default) [ 66.056461] f027a840: ttyS0 at I/O 0x0 (irq = 1, base_baud = 115200) is a SUN4V HCONS [ 66.396184] console [ttyHV0] enabled [ 66.397750] f0288178: ttyS1 at MMIO 0xf820c2c000 (irq = 18, base_baud = 115387) is a ST16650V2 [ 126.865208] INFO: rcu_sched detected stalls on CPUs/tasks: { 7} (detected by 0, t=60810 jiffies, g=18446744073709551327, c=18446744073709551326, q=101) [ 126.865561] * CPU[ 0]: TSTATE[0000000080001603] TPC[000000000042c174] TNPC[000000000042c178] TASK[swapper/0:0] [ 126.865829] TPC[arch_cpu_idle+0x74/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[start_kernel+0x3b4/0x3c4] [ 126.866124] CPU[ 1]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/1:0] [ 126.866413] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.866700] CPU[ 2]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/2:0] [ 126.867007] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.867340] CPU[ 3]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/3:0] [ 126.867577] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.867862] CPU[ 4]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/4:0] [ 126.868168] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.868428] CPU[ 5]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/5:0] [ 126.868734] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.869019] CPU[ 6]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/6:0] [ 126.869303] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.869588] CPU[ 7]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/7:0] [ 126.869727] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.869840] CPU[ 8]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/8:0] [ 126.869977] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.870091] CPU[ 9]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/9:0] [ 126.870229] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.870343] CPU[ 10]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/10:0] [ 126.870480] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.870595] CPU[ 11]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/11:0] [ 126.870734] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.870847] CPU[ 12]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/12:0] [ 126.870985] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.871246] CPU[ 13]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/13:0] [ 126.871408] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.871693] CPU[ 14]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/14:0] [ 126.871978] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.872265] CPU[ 15]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/15:0] [ 126.872571] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.872904] CPU[ 16]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/16:0] [ 126.873141] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.873426] CPU[ 17]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/17:0] [ 126.873735] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.873994] CPU[ 18]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/18:0] [ 126.874300] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.874587] CPU[ 19]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/19:0] [ 126.874874] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.875160] CPU[ 20]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/20:0] [ 126.875297] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.875411] CPU[ 21]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/21:0] [ 126.875549] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.875662] CPU[ 22]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/22:0] [ 126.875800] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.875914] CPU[ 23]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/23:0] [ 126.876053] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.876166] CPU[ 24]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/24:0] [ 126.876304] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.876418] CPU[ 25]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/25:0] [ 126.876557] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.876671] CPU[ 26]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/26:0] [ 126.876809] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.876923] CPU[ 27]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/27:0] [ 126.877061] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.877175] CPU[ 28]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/28:0] [ 126.877313] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.877427] CPU[ 29]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/29:0] [ 126.877565] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.877678] CPU[ 30]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/30:0] [ 126.877816] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.877929] CPU[ 31]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/31:0] [ 126.878068] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 126.887472] Fusion MPT base driver 3.04.20 [ 126.887522] Copyright (c) 1999-2008 LSI Corporation [ 126.887598] Fusion MPT SAS Host driver 3.04.20 [ 126.888159] mptbase: ioc0: Initiating bringup [ 164.865503] ioc0: LSISAS1064 A3: Capabilities={Initiator} [ 235.920978] scsi0 : ioc0: LSISAS1064 A3, FwRev=010a0000h, Ports=1, MaxQ=511, IRQ=25 [ 235.978002] mptsas: ioc0: attaching ssp device: fw_channel 0, fw_id 0, phy 0, sas_addr 0x5000c500021670d9 [ 235.980742] scsi 0:0:0:0: Direct-Access SEAGATE ST973401LSUN72G 0556 PQ: 0 ANSI: 3 [ 235.985114] sd 0:0:0:0: [sda] 143374738 512-byte logical blocks: (73.4 GB/68.3 GiB) [ 235.986495] sd 0:0:0:0: [sda] Write Protect is off [ 235.988339] mptsas: ioc0: attaching ssp device: fw_channel 0, fw_id 1, phy 1, sas_addr 0x5000c50002166991 [ 235.988995] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, supports DPO and FUA [ 235.990995] scsi 0:0:1:0: Direct-Access SEAGATE ST973401LSUN72G 0556 PQ: 0 ANSI: 3 [ 235.995376] sd 0:0:1:0: [sdb] 143374738 512-byte logical blocks: (73.4 GB/68.3 GiB) [ 235.996682] sd 0:0:1:0: [sdb] Write Protect is off [ 235.998715] Fusion MPT misc device (ioctl) driver 3.04.20 [ 235.999092] sd 0:0:1:0: [sdb] Write cache: disabled, read cache: enabled, supports DPO and FUA [ 235.999096] mptctl: Registered with Fusion MPT base driver [ 235.999102] mptctl: /dev/mptctl @ (major,minor=10,220) [ 236.000651] mousedev: PS/2 mouse device common for all mice [ 236.004773] sda: sda1 sda2 sda3 sda4 [ 236.005257] rtc-sun4v rtc-sun4v: rtc core: registered sun4v as rtc0 [ 236.009508] TCP: cubic registered [ 236.009556] NET: Registered protocol family 17 [ 236.009687] Key type dns_resolver registered [ 236.010707] registered taskstats version 1 [ 236.011302] sd 0:0:0:0: [sda] Attached SCSI disk [ 236.012697] rtc-sun4v rtc-sun4v: setting system clock to 2014-03-24 00:47:59 UTC (1395622079) [ 236.033384] sdb: sdb1 sdb2 sdb3 [ 236.039207] sd 0:0:1:0: [sdb] Attached SCSI disk [ 236.077991] EXT4-fs (sda4): mounted filesystem with ordered data mode. Opts: (null) [ 236.078091] VFS: Mounted root (ext4 filesystem) readonly on device 8:4. [ 296.865605] INFO: rcu_sched detected stalls on CPUs/tasks: { 1 2 3 5 6 8 10 11 12 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31} (detected by 0, t=60552 jiffies, g=18446744073709551337, c=18446744073709551336, q=20) [ 296.867077] * CPU[ 0]: TSTATE[0000000080001603] TPC[000000000042c174] TNPC[000000000042c178] TASK[swapper/0:0] [ 296.867394] TPC[arch_cpu_idle+0x74/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[start_kernel+0x3b4/0x3c4] [ 296.867684] CPU[ 1]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/1:0] [ 296.867825] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] ... [ 297.236661] CPU[ 31]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/31:0] [ 297.250135] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 721.866556] INFO: rcu_sched detected stalls on CPUs/tasks: { 1 2 3 5 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31} (detected by 0, t=60845 jiffies, g=18446744073709551338, c=18446744073709551337, q=35) [ 721.868110] * CPU[ 0]: TSTATE[0000000080001603] TPC[000000000042c174] TNPC[000000000042c178] TASK[swapper/0:0] [ 721.868591] TPC[arch_cpu_idle+0x74/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[start_kernel+0x3b4/0x3c4] ... [ 721.882199] CPU[ 31]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/31:0] [ 721.882336] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] [ 722.061274] random: nonblocking pool is initialized [ 782.866698] INFO: rcu_sched detected stalls on CPUs/tasks: { 1 2 3 4 5 6 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31} (detected by 0, t=60703 jiffies, g=18446744073709551345, c=18446744073709551344, q=42) [ 782.868311] * CPU[ 0]: TSTATE[0000000080001603] TPC[000000000042c174] TNPC[000000000042c178] TASK[swapper/0:0] [ 782.868621] TPC[arch_cpu_idle+0x74/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[start_kernel+0x3b4/0x3c4] [ 782.868912] CPU[ 1]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/1:0] [ 782.869053] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] ... [ 782.880891] CPU[ 31]: TSTATE[0000000080001602] TPC[000000000042c170] TNPC[000000000042c174] TASK[swapper/31:0] [ 782.881029] TPC[arch_cpu_idle+0x70/0xa0] O7[arch_cpu_idle+0x5c/0xa0] I7[cpu_startup_entry+0x114/0x1a0] RPC[0x949378] * Caching service dependencies ...
Created attachment 130541 [details] full startup log
Created attachment 130551 [details] kernel configuration
See the discussion on http://www.spinics.net/lists/sparclinux/msg11806.html
Linux 3.14-rc8 includes the patch proposed in the discussion mentioned one comment above. I tested it and the issue is now solved, kernel works like a charm. I close the bug. https://www.kernel.org/diff/diffview.cgi?file=%2Fpub%2Flinux%2Fkernel%2Fv3.x%2Ftesting%2Fpatch-3.14-rc8.xz;z=2363