Thank you Simon.
Simon Barner wrote:
> Roberto Nunnari wrote:
>
>>Hello.
>>
>>Please send replies also to my mailbox, as I'm not on this list.
>>
>>Can anybody tell me what are these messages about? Are them
>>just informational or do I have to worry?
>>
>>Aug 2 18:23:59 web kernel: lock order reversal
>>Aug 2 18:23:59 web kernel: 1st 0xc07066e0 UMA lock (UMA lock) @
>>/usr/src/sys/vm/uma_core.c:1200
>>Aug 2 18:23:59 web kernel: 2nd 0xc0c31100 system map (system map) @
>>/usr/src/sys/vm/vm_map.c:2210
>>Aug 2 19:12:21 web kernel: lock order reversal
>>Aug 2 19:12:21 web kernel: 1st 0xc8c1c39c vm object (vm object) @
>>/usr/src/sys/vm/swap_pager.c:1323
>>Aug 2 19:12:21 web kernel: 2nd 0xc0705b80 swap_pager swhash (swap_pager
>>swhash) @ /usr/src/sys/vm/swap_pager.c:1838
>>Aug 2 19:12:21 web kernel: 3rd 0xc6853108 vm object (vm object) @
>>/usr/src/sys/vm/uma_core.c:873
>
>
> This is a so-called lock order reversal (LOR). To learn more about LORs
> in general and specifically about the one you are seeing, please see
> here:
>
> http://sources.zabbadoz.net/freebsd/lor.html --> # 007
>
> Simon
>
--
Roberto Nunnari -software engineer-
mailto:roberto.nunnari at supsi.ch
Scuola Universitaria Professionale della Svizzera Italiana
Dipartimento Tecnologie Innovative
http://www.dti.supsi.ch
SUPSI-DTI
Via Cantonale tel: +41-91-6108561
6928 Manno """ fax: +41-91-6108570
Switzerland (o o)
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