On Tuesday 12 August 2014 18:39:39 Aravind Gopalakrishnan wrote:
> (btw, this is a 'Kabini' processor and not a
> 'Kaveri')
Right, sorry.
> (I think you mentioned you were able to reproduce on 3.16. So assuming
> -rc will be affected too)
At least, 3.16-rc7 was affected too.
> Are you noticing this BUG when you are running any particular load?
> I could help debug effort or test patches to fix issue(whenever
> necessary) if I have some way to reproduce this..
Well, there's no particular workload type. The machine in question is my home
router with x2go session, torrents, i2p and tor. And the most difficult is to
wait for the hang to occur, as it happens ~1 time per 24 hours or so (could be
much sooner or a little bit later).
Also, I've noticed that there's no need to load CPU intentionally with some
test scripts to trigger this bug as CPU frequencies are jumping constantly:
===
pf@defiant:~$ cat
/sys/devices/system/cpu/cpu{0,1,2,3}/cpufreq/stats/trans_table
From : To
: 1600000 1400000 1200000 1000000 800000
1600000: 0 21936 14210 9997 61789
1400000: 12195 0 2149 1026 20635
1200000: 10557 881 0 1631 21333
1000000: 10292 1021 1596 0 25018
800000: 74888 12167 16447 25273 0
From : To
: 1600000 1400000 1200000 1000000 800000
1600000: 0 23610 14510 9827 61768
1400000: 13856 0 2445 1086 20849
1200000: 10925 885 0 1773 21581
1000000: 10206 1037 1683 0 24775
800000: 74727 12704 16526 25015 0
From : To
: 1600000 1400000 1200000 1000000 800000
1600000: 0 26721 15016 10040 61981
1400000: 16249 0 2902 1150 21444
1200000: 11811 958 0 1939 23065
1000000: 11310 1159 1958 0 26525
800000: 74387 12907 17897 27823 0
From : To
: 1600000 1400000 1200000 1000000 800000
1600000: 0 27715 13060 10143 62328
1400000: 18215 0 3379 1881 24753
1200000: 12920 1459 0 3529 27835
1000000: 13193 1915 3372 0 39240
800000: 68917 17139 25932 42167 0
===
--
Oleksandr post-factum Natalenko, MSc
pf-kernel community
https://natalenko.name/
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