I built a kernel using the same .config file from Ubuntu sources. The
system uname -r is 2.6.17.14-ubuntu1-tgspcl. The time to fail lengthened
but has generated a similar failure symptom at approximately 25 Hrs TTF.

The failure symptom is BUG: soft lockup detected on CPU#28!

dmesg shows:

[98810.660884] BUG: soft lockup detected on CPU#28!
[98810.805054] Call Trace:
[98810.805074]  [000000000043411c] smp_percpu_timer_interrupt+0xbc/0x160
[98810.805119]  [00000000004109d4] tl0_irq14+0x14/0x20
[98810.805144]  [0000000000494170] anon_vma_unlink+0x10/0x80
[98810.805182]  [000000000048ec84] free_pgtables+0x44/0xe0
[98810.805211]  [000000000048fb3c] unmap_region+0xbc/0x140
[98810.805237]  [00000000004907f4] do_munmap+0x174/0x240
[98810.805263]  [00000000004908dc] sys_munmap+0x1c/0x40
[98810.805288]  [0000000000406c94] linux_sparc_syscall32+0x34/0x40
[98810.805325]  [00000000f7dc7388] 0xf7dc7388


Top shows the same problem, the date command is at the top incrementing run 
time.

top - 17:16:08 up 1 day,  4:09,  7 users,  load average: 70.12, 70.09, 71.23
Tasks: 402 total,  71 running, 331 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.1%us,  3.3%sy, 86.9%ni,  9.7%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:  33257904k total, 23603152k used,  9654752k free,   206488k buffers
Swap: 45440440k total,  1419392k used, 44021048k free,    37664k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND            
10991 greg      16   0  3488 1040  888 R  100  0.0  53:30.37 date               


I have downloaded feisty and will load that on the system next.

I will save the system disk which will enable me to compile any debug
code needed.

thanks ted.

-- 
Sparc t2000 hangs under stress load
https://launchpad.net/bugs/91601

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