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* Issue booting Niagara T1 after commit 87fa05aeb3
@ 2013-11-19 12:21 Fabio M. Di Nitto
  2013-12-12 12:33 ` Raúl Porcel
                   ` (3 more replies)
  0 siblings, 4 replies; 5+ messages in thread
From: Fabio M. Di Nitto @ 2013-11-19 12:21 UTC (permalink / raw)
  To: sparclinux

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@ravnborg.org>
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, tS42 jiffies, g\x18446744073709551328,
c\x18446744073709551327, q!64)
(detected by 0, tS42 jiffies, g\x18446744073709551328,
c\x18446744073709551327, q!64)
[   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, tR92 jiffies, g\x18446744073709551336,
c\x18446744073709551335,5)
[   81.924215] INFO: Stall ended before state dump start
[  145.419184] INFO: rcu_sched detected stalls on CPUs/tasks: {}
(detected by 0, t!166 jiffies, g\x18446744073709551336,
c\x18446744073709551335,7)
[  145.419482] INFO: Stall ended before state dump start



^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2014-04-04 11:50 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-11-19 12:21 Issue booting Niagara T1 after commit 87fa05aeb3 Fabio M. Di Nitto
2013-12-12 12:33 ` Raúl Porcel
2013-12-13 11:46 ` Raúl Porcel
2014-02-10 21:23 ` [resend] " Fabio M. Di Nitto
2014-04-04 11:50 ` Raúl Porcel

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