7.2-release/amd64: panic, spin lock held too long

Attilio Rao attilio at freebsd.org
Wed Jul 22 16:30:49 UTC 2009


2009/7/22 C. C. Tang <hiyorin at gmail.com>:
>> Could that one (on i386) be related?
>> http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/134584
>>
>
> I have no idea about it but I can tell the difference...
> My machine panic randomly rather than on shutdown and I remembered that it
> failed to write core dump. It also failed to reboot automatically..

Is your problem on -CURRENT and amd64?
At some point there has been a problem with PAT support (and
tlb_shootdowns() could lead to a livelock hanging forever, leading to
such a bug) but I expect it is fixed now.
Can you try with a fresh new -CURRENT if any?

Thanks,
Attilio



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