Hi,
Just for the record, commit b3042d609e30e6144024801c89be3925106752b
fixes it.
kernel 3.14 boots fine
On 02/10/14 22:23, Fabio M. Di Nitto wrote:
> HI all,
>
> another user has reported a similar issue. Anything that I can help with
> to have a fix?
>
> Thanks
> Fabio
>
> On 11/19/2013 01:21 PM, Fabio M. Di Nitto wrote:
>> Hi all,
>>
>> yes I know.. vintage hardware :) It´s running Debian unstable updated to
>> approx a week ago (yay for tons of rebuilds to bisect ;)).
>>
>> fabbione@sunfire:~/linux-2.6$ gcc --version
>> gcc (Debian 4.6.4-5) 4.6.4
>>
>> kernel config is from debian, applied to the various bisect done on
>> Linus tree.
>>
>> sunfire:~# cat /proc/cpuinfo
>> cpu : UltraSparc T1 (Niagara)
>> fpu : UltraSparc T1 integrated FPU
>> pmu : niagara
>> prom : OBP 4.28.9 2008/06/30 21:26
>> type : sun4v
>> ncpus probed : 24
>> ..
>>
>> commit 87fa05aeb3a5e8e21b1a5510eef6983650eff092
>> Author: Sam Ravnborg <sam@xxxxxxxxxxxx>
>> Date: Thu Apr 11 21:38:50 2013 +0200
>>
>> sparc: Use generic idle loop
>>
>> Add generic cpu_idle support
>>
>> appears to be culprit and I can´t boot any kernel after that. Reverting
>> the commit makes the machine boot again (tested up to commit 4fbf888acc
>> from Linus tree).
>>
>> Sorry I really don´t know that part of the code well enough to propose a
>> fix, but I can either provide access to the machine or test debugging
>> patches.
>>
>> Thanks
>> Fabio
>>
>> Few extra info:
>>
>> with this commit applied (head to the commit):
>>
>> [SNIP]
>> [ 68.089495] scsi0 : Emulex LPe1150 PCIe Fibre Channel Adapter on PCI
>> bus 08 device 00 irq 23
>> [ 68.089495] scsi0 : Emulex LPe1150 PCIe Fibre Channel Adapter on PCI
>> bus 08 device 00 irq 23
>> [ 89.429041] INFO: rcu_sched detected stalls on CPUs/tasks:[
>> 89.429041] INFO: rcu_sched detected stalls on CPUs/tasks: { { 3 3 10 10
>> 15 15} } (detected by 0, t=5342 jiffies, g=18446744073709551328,
>> c=18446744073709551327, q=2164)
>> (detected by 0, t=5342 jiffies, g=18446744073709551328,
>> c=18446744073709551327, q=2164)
>> [ 89.431437] * CPU[ 0]: TSTATE[0000000080001603]
>> TPC[000000000042b9d4] TNPC[000000000042b9d8] TASK[swapper/0:0]
>> [ 89.431437] * CPU[ 0]: TSTATE[0000000080001603]
>> TPC[000000000042b9d4] TNPC[000000000042b9d8] TASK[swapper/0:0]
>> [ 89.431462] BUG: soft lockup - CPU#3 stuck for 23s! [swapper/3:0]
>> [ 89.431462] BUG: soft lockup - CPU#3 stuck for 23s! [swapper/3:0]
>> [ 89.431470] BUG: soft lockup - CPU#1 stuck for 23s! [swapper/1:0]
>> [ 89.431470] BUG: soft lockup - CPU#1 stuck for 23s! [swapper/1:0]
>> [ 89.431479] BUG: soft lockup - CPU#2 stuck for 23s! [swapper/2:0]
>> [ 89.431479] BUG: soft lockup - CPU#2 stuck for 23s! [swapper/2:0]
>> [ 89.431484] Modules linked in:
>> [SNIP]
>>
>> Most kernels in between that commit to 3.12:
>>
>> [SNIP]
>> [ 68.392210] UDP hash table entries: 4096 (order: 4, 131072 bytes)
>> [ 68.393319] UDP-Lite hash table entries: 4096 (order: 4, 131072 bytes)
>> [ 68.395425] NET: Registered protocol family 1
>> [ 68.396008] pci 0001:05:02.0: Activating ISA DMA hang workarounds
>> -- no more output --
>>
>> With Linus tree up to commit 4fbf888accb39 (didn´t test yet newer trees):
>>
>> [ 60.770765] scsi2 : Emulex LPe1150 PCIe Fibre Channel Adapter on PCI
>> bus 08 device 00 irq 23
>> [ 81.923914] INFO: rcu_sched detected stalls on CPUs/tasks: {}
>> (detected by 4, t=5292 jiffies, g=18446744073709551336,
>> c=18446744073709551335,5)
>> [ 81.924215] INFO: Stall ended before state dump start
>> [ 145.419184] INFO: rcu_sched detected stalls on CPUs/tasks: {}
>> (detected by 0, t=21166 jiffies, g=18446744073709551336,
>> c=18446744073709551335,7)
>> [ 145.419482] INFO: Stall ended before state dump start
>>
>>
>
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